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PUBLICViewer does not support full SVG 1.1 \ No newline at end of file diff --git a/_sources/additional-topics.rst.txt b/_sources/additional-topics.rst.txt new file mode 100644 index 0000000..e69de29 diff --git a/_sources/cmake-syntax.rst.txt b/_sources/cmake-syntax.rst.txt new file mode 100644 index 0000000..6dac2ba --- /dev/null +++ b/_sources/cmake-syntax.rst.txt @@ -0,0 +1,311 @@ +.. _cmake-syntax: + + +CMake syntax +============ + + +.. questions:: + + - How can we achieve more control over the build system generated by CMake? + - Is it possible to let the user decide what to generate? + + +.. objectives:: + + - Learn how to define variables with ``set`` and use them with the ``${}`` + operator for `variable references `_. + - Learn the syntax for conditionals in CMake: ``if`` - ``elseif`` - ``else`` - ``endif`` + - Learn the syntax for loops in CMake: ``foreach`` + - Learn how CMake structures build artifacts. + - Learn how to print helpful messages. + - Learn how to handle user-facing options: ``option`` and the role of CMake cache. + + +CMake offers a **domain-specific language** (DSL) to describe how to generate a build system native to the specific platform you might be running on. In this episode, we will get acquainted with its syntax. + + +The CMake DSL +------------- + + +Remember that the DSL is **case-insensitive**. We will now have a look at its main elements. + + +Variables ++++++++++ + + +These are either CMake- or user-defined variables. You can obtain the list of CMake-defined variables with the command: + +.. code-block:: bash + + $ cmake --help-variable-list + +You can create a new variable with the ``set`` command: + +.. signature:: ``set`` + + .. code-block:: cmake + + set( ... [PARENT_SCOPE]) + + +Variables in CMake are always of string type, but certain commands can interpret them as other types. If you want to declare a *list* variable, you will have to provide it as a ;-separated string. Lists can be manipulated with the ``list`` family of commands. + +You can inspect the value of any variable by *dereferencing* it with the ``${}`` operator, as in bash shell. For example, the following snippet sets the content of ``hello`` variable and then prints it: + +.. code-block:: cmake + + set(hello "world") + message("hello ${hello}") + + +Two notes about **variable references**: + +- if the variable within the ``${}`` operator is not set, you will get an empty string. +- you can *nest* variable references: ``${outer_${inner_variable}_variable}``. They will be evaluated from the inside out. + + +One of the most confusing aspects in CMake is the **scoping of variables**. There are three variable scopes in the DSL: + +- **Function**: In effect when a variable is ``set`` within a function, the variable will be visible within the function, but not outside. +- **Directory**: In effect when processing a ``CMakeLists.txt`` in a directory, variables in the parent folder will be available, but any that is ``set`` in the current folder will not be propagated to the parent. +- **Cache**: These variables are **persistent** across calls to ``cmake`` and available to all scopes in the project. Modifying a cache variable requires using a special form of the ``set`` function: + + .. signature:: ``set`` + + .. code-block:: cmake + + set( ... CACHE [FORCE]) + + +Here is a list of few **CMake-defined variables**: + +- ``PROJECT_BINARY_DIR``. This is the build folder for the project. +- ``PROJECT_SOURCE_DIR``. This is the location of the root ``CMakeLists.txt`` in the project. +- ``CMAKE_CURRENT_LIST_DIR``. This is the folder for the ``CMakeLists.txt`` currently being processed. + +Help on a specific built-in variable can be obtained with: + +.. code-block:: bash + + $ cmake --help-variable PROJECT_BINARY_DIR + + +Commands +++++++++ + + +These are provided by CMake and are essential building blocks of the DSL, as they allow you to manipulate variables. They include control flow constructs and the ``target_*`` family of commands. + +You can find a complete list of available commands with: + +.. code-block:: bash + + $ cmake --help-command-list + + +**Functions** and **macros** are built on top of the basic built-in commands and are either CMake- or user-defined. These prove useful to avoid repetition in your CMake scripts. + +The difference between a function and a macro is their *scope*: + +- **Functions** have their own scope: variables defined inside a function are not propagated back to the caller. +- **Macros** do not have their own scope: variables from the parent scope can be modified and new variables in the parent scope can be set. + + +Help on a specific built-in command, function or macro can be obtained with: + +.. code-block:: bash + + $ cmake --help-command target_link_libraries + + +Modules ++++++++ + + +These are collections of functions and macros and are either CMake- or user-defined. CMake comes with a rich ecosystem of modules and you will probably write a few of your own to encapulate frequently used functions or macros in your CMake scripts. + +You will have to include the module to use its contents, for example: + +.. code-block:: cmake + + include(CMakePrintHelpers) + + +The full list of built-in modules is available with: + +.. code-block:: bash + + $ cmake --help-module-list + +Help on a specific built-in module can be obtained with: + +.. code-block:: bash + + $ cmake --help-module CMakePrintHelpers + + + +Flow control +------------ + + +The ``if`` and ``foreach`` commands are available as flow control constructs in the CMake DSL and you are surely familiar with their use in other programming languages. + +Since *all* variables in CMake are strings, the syntax for ``if`` and ``foreach`` appears in a few different variants. + +.. signature:: ``if`` + + .. code-block:: cmake + + if() + # + elseif() # optional block, can be repeated + # + else() # optional block + # + endif() + +The truth value of the conditions in the ``if`` and ``elseif`` blocks is determined by boolean operators. In the CMake DSL: + +- True is any expression evaluating to: ``1``, ``ON``, ``TRUE``, ``YES``, and + ``Y``. +- False is any expression evaluating to: ``0``, ``OFF``, ``FALSE``, ``NO``, + ``N``, ``IGNORE``, and ``NOTFOUND``. + + +CMake offers boolean operator for string comparisons, such as ``STREQUAL`` for string equality, and for version comparisons, such as ``VERSION_EQUAL``. + + +.. callout:: Variable expansions in conditionals + + The ``if`` command expands the contents of variables before evaluating their + truth value. See `official documentation `_ for further details. + + +.. exercise:: Exercise 2: Conditionals in CMake + + Modify the ``CMakeLists.txt`` from the previous exercise to build either a *static* or a *shared* library depending on the value of the boolean ``MAKE_SHARED_LIBRARY``: + + 1. Define the ``MAKE_SHARED_LIBRARY`` variable. + 2. Write a conditional checking the variable. In each branch call ``add_library`` appropriately. + + .. tabs:: + + .. tab:: C++ + + You can find a scaffold project in the ``content/code/02_conditionals-cxx`` folder. A working solution is in the ``solution`` subfolder. + + .. tab:: Fortran + + You can find a scaffold project in the ``content/code/02_conditionals-f`` folder. A working solution is in the ``solution`` subfolder. + + +You can perform the same operation on a collection of items with ``foreach``: + +.. signature:: ``foreach`` + + .. code-block:: cmake + + foreach( ) + # + endforeach() + +The list of items is either space- or ;-separated. ``break()`` and ``continue()`` are also available. + + +.. typealong:: Loops in CMake + + In this typealong, we will show how to use ``foreach`` and lists in CMake. We will work from a scaffold project in the ``content/code/03_loops-cxx`` folder. + + The goal is to compile a library from a bunch of source files: some of them are to be compiled with ``-O3`` optimization level, while some others with ``-O2``. We will set the compilation flags as properties on the library target. Targets and properties will be discussed at greater length in :ref:`targets`. + + A working solution is in the ``solution`` subfolder. + + It is instructive to browse the build folder for the project: + + .. code-block:: bash + + $ tree -L 2 build + + build + ├── CMakeCache.txt + ├── CMakeFiles + │   ├── 3.18.4 + │   ├── cmake.check_cache + │   ├── CMakeDirectoryInformation.cmake + │   ├── CMakeOutput.log + │   ├── CMakeTmp + │   ├── compute-areas.dir + │   ├── geometry.dir + │   ├── Makefile2 + │   ├── Makefile.cmake + │   ├── progress.marks + │   └── TargetDirectories.txt + ├── cmake_install.cmake + ├── compute-areas + ├── libgeometry.a + └── Makefile + + We note that: + + - The project was configured with ``Makefile`` generator. + - The cache is a plain-text file ``CMakeCache.txt``. + - For every target in the project, CMake will create a subfolder ``.dir`` under ``CMakeFiles``. The intermediate object files are stored in these folders, together with compiler flags and link line. + - The build artifacts, ``compute-areas`` and ``libgeometry.a``, are stored at the root of the build tree. + + + +Printing messages +----------------- + +You will most likely have to engage in debugging your CMake scripts at some point. Print-based debugging is the most effective way and the main workhorse for this will be the ``message`` command: + +.. signature:: ``message`` + + .. code-block:: cmake + + message([] "message to display") + +.. parameters:: + + ```` + What type of message to display, for example: + + - ``STATUS``, for incidental information. + - ``FATAL_ERROR``, to report an error that prevents further processing and generation. + + +It should be noted that ``message`` can be a bit awkward to work with, especially when you want to print the name *and* value of a variable. Including the built-in module ``CMakePrintHelpers`` will make your life easier when debugging, since it provides the ``cmake_print_variables`` function: + +.. signature:: ``cmake_print_variables`` + + .. code-block:: cmake + + cmake_print_variables(var1 var2 ... varN) + + This command accepts an arbitrary number of variables and prints their name *and* value to standard output. + For example: + + .. code-block:: cmake + + include(CMakePrintHelpers) + cmake_print_variables(CMAKE_C_COMPILER CMAKE_MAJOR_VERSION DOES_NOT_EXIST) + + gives: + + .. code-block:: text + + -- CMAKE_C_COMPILER="/usr/bin/gcc" ; CMAKE_MAJOR_VERSION="2" ; DOES_NOT_EXIST="" + + + +.. keypoints:: + + - CMake offers a full-fledged DSL which empowers you to write complex ``CMakeLists.txt``. + - Variables have scoping rules. + - The structure of the project is mirrored in the build folder. + + diff --git a/_sources/dependencies.rst.txt b/_sources/dependencies.rst.txt new file mode 100644 index 0000000..ed2b1de --- /dev/null +++ b/_sources/dependencies.rst.txt @@ -0,0 +1,229 @@ +.. _dependencies: + + +Finding and using dependencies +============================== + +.. questions:: + + - How can I use CMake to detect and use the dependencies of my project? + +.. objectives:: + + - Learn how to use ``find_package``. + - Learn what other detection alternatives exist. + +The vast majority of software projects do not happen in a vacuum: they will have +dependencies on existing frameworks and libraries. Good documentation will +instruct your users to ensure that these are satisfied in their programming +environment. The build system is the appropriate place to check that these +preconditions are met and that your project can be built correctly. +In this episode, we will show you few examples of how to detect and use +dependencies in your CMake build system. + +Finding dependencies +-------------------- + +CMake offers a family of commands to find artifacts installed on your system: + +- ``find_file`` to retrieve the full path to a file. +- ``find_library`` to find a library, shared or static. +- ``find_package`` to find and load settings from an external project. +- ``find_path`` to find the directory containing a file. +- ``find_program`` to find an executable. + +The workhorse of dependency discovery is ``find_package``, which will cover your +needs in almost all use cases. + +.. signature:: `find_package `_ + + .. code-block:: cmake + + find_package( [version] [EXACT] [QUIET] [MODULE] + [REQUIRED] [[COMPONENTS] [components...]] + [OPTIONAL_COMPONENTS components...] + [NO_POLICY_SCOPE]) + + This command will attempt finding the package with name ```` by + searching in a number of `predefined folders + `_. + It is possible to ask for a minimum or exact version. If ``REQUIRED`` is + given, a failed search will trigger a fatal error. The rules for the search + are obtained from modules named ``Find.cmake``. + Packages can also have *components* and you can ask to detect just a handful of them. + + +We cannot stress this enough: you should **only** use the other commands in the +``find_`` family in very special, very narrow circumstances. Why so? + +1. For a large selection of common dependencies, the ``Find.cmake`` + modules shipped with CMake work flawlessly and are maintained by the CMake + developers. This lifts the burden of programming your own dependency + detection tricks. +2. ``find_package`` will set up **imported targets**: targets defined *outside* + your project that you can use with your own targets. The properties on + imported targets defines *usage requirements* for the dependencies. A command + such as: + + .. code-block:: cmake + + target_link_libraries(your-target + PUBLIC + imported-target + ) + + will set compiler flags, definitions, include directories, and link libraries + from ``imported-target`` to ``your-target`` *and* to all other targets in + your project that will use ``your-target``. + + +These two points simplify **enormously** the burden of dependency detection and +consistent usage within a multi-folder project. + + +Using ``find_package`` +++++++++++++++++++++++ + +When attempting dependency detection with ``find_package``, you should make sure that: + +- A ``Find.cmake`` module exists, +- Which components, if any, it provides, and +- What imported targets it will set up. + +A complete list of ``Find.cmake`` can be found from the command-line interface: + +.. code-block:: bash + + $ cmake --help-module-list | grep "Find" + +.. typealong:: Using OpenMP + + We want to compile the following OpenMP sample code: [#omp]_ + + + .. literalinclude:: code/xx_taskloop/solution/taskloop.cpp + :language: c++ + + Note the usage of the ``taskloop`` construct, which was introduced in OpenMP + 4.5: we need to make sure our C++ compiler is suitably compatible with *at + least* that version of the standard. + + From the documentation of the ``FindOpenMP.cmake`` module: + + .. code-block:: bash + + $ cmake --help-module FindOpenMP | less + + we find that the module provides the components ``C``, ``CXX``, and + ``Fortran`` and that ``OpenMP::OpenMP_CXX`` target will be provided, if + detection is successful. + Thus, we do the following: + + .. code-block:: cmake + + find_package(OpenMP 4.5 REQUIRED COMPONENTS CXX) + + target_link_libraries(task-loop PRIVATE OpenMP::OpenMP_CXX) + + We can configure and build verbosely. [#verbose]_ + Notice that compiler flags, include directories, and link libraries are properly resolved by CMake. + + You can find the complete working example in ``content/code/xx_taskloop/solution``. + +.. exercise:: Exercise 23: Using MPI + + In this exercise, you will attempt compiling a "Hello, world" program that + uses the message passing interface (MPI). + + 1. Check whether a ``FindMPI.cmake`` module exists in the built-in module + library. + 2. Get acquainted with its components and the variables and imported targets + it defines. + + .. tabs:: + + .. tab:: C++ + + The scaffold project is in ``content/code/xx_mpi-cxx``. + + #. Compile the source file to an executable. + #. Link against the MPI imported target. + #. Invoke a verbose build and observe how CMake compiles and links. + + A working example is in the ``solution`` subfolder. + + .. tab:: Fortran + + The scaffold project is in ``content/code/xx_mpi-f``. + + #. Compile the source file to an executable. + #. Link against the MPI imported target. + #. Invoke a verbose build and observe how CMake compiles and links. + + A working example is in the ``solution`` subfolder. + + +Alternatives: ``Config`` scripts and ``pkg-config`` ++++++++++++++++++++++++++++++++++++++++++++++++++++ + +What to do when there is no built-in ``Find.cmake`` module for a package you depend on? +The package developers might be already prepared to help you out: + +- They ship the CMake-specific file ``Config.cmake`` which + describes how the imported target should be made for their package. + In this case, you need to point CMake to the folder containing the ``Config`` file using the + special ``_DIR`` variable: + + .. code-block:: bash + + $ cmake -S. -Bbuild -D_DIR=/folder/containing/Config.cmake + +- They include a ``.pc`` file, which, on Unix-like platforms, can be detected + with the ``pkg-config`` utility. You can then leverage ``pkg-config`` through CMake: + + .. code-block:: cmake + + # find pkg-config + find_package(PkgConfig REQUIRED) + # ask pkg-config to find the UUID library and prepare an imported target + pkg_search_module(UUID REQUIRED uuid IMPORTED_TARGET) + # use the imported target + if(TARGET PkgConfig::UUID) + message(STATUS "Found libuuid") + endif() + + This was the strategy adopted in :ref:`probing` when testing the use of the + UUID library. + + +.. keypoints:: + + - CMake has a rich ecosystem of modules for finding software dependencies. They are called ``Find.cmake``. + - The ``Find.cmake`` modules are used through ``find_package()``. + - You can also use the classic Unix tool ``pkg-config`` to find software + dependencies, but this is not as robust as the CMake-native + ``Find`` modules. + + + +.. rubric:: Footnotes + +.. [#omp] + + Example adapted from page 85 in `OpenMP 4.5 examples + `_. + +.. [#verbose] + + The way in which to trigger a verbose build depends on the native build tool you are using. + For Unix Makefiles: + + .. code-block:: bash + + $ cmake --build build -- VERBOSE=1 + + For Ninja: + + .. code-block:: bash + + $ cmake --build build -- -v diff --git a/_sources/guide.rst.txt b/_sources/guide.rst.txt new file mode 100644 index 0000000..89553fb --- /dev/null +++ b/_sources/guide.rst.txt @@ -0,0 +1,37 @@ +Instructor's guide +================== + +Why we teach this lesson +------------------------ + + + +Intended learning outcomes +-------------------------- + + + +Timing +------ + + + +Preparing exercises +------------------- + +e.g. what to do the day before to set up common repositories. + + + +Other practical aspects +----------------------- + + + +Interesting questions you might get +----------------------------------- + + + +Typical pitfalls +---------------- diff --git a/_sources/hello-cmake.rst.txt b/_sources/hello-cmake.rst.txt new file mode 100644 index 0000000..5667802 --- /dev/null +++ b/_sources/hello-cmake.rst.txt @@ -0,0 +1,310 @@ +.. _hello-cmake: + + +From sources to executables +=========================== + +.. questions:: + + - How do we use CMake to compile source files to executables? + +.. objectives:: + + - Learn what tools are available in the CMake suite. + - Learn how to write a simple ``CMakeLists.txt``. + - Learn the difference between **build systems**, **build tools**, and **build system generator**. + - Learn to distinguish between *configuration*, *generation*, and **build* time. + + + +What is CMake and why should you care? +-------------------------------------- + +Software is everywhere and so are build systems. Whenever you run a piece of software, anything from calendar apps to computationally-intensive programs, there was a build system involved in transforming the plain-text source code into binary files that could run on the device you are using. + +CMake is a **build-system generator**: it provides a family of tools and a *domain-specific language* (DSL) to **describe** what the build system should achieve when the appropriate build tools are invoked. The DSL is platform- *and* compiler-agnostic: you can reuse the same CMake scripts to obtain **native** build systems on any platform. + + +.. figure:: img/build-systems.svg + :align: center + + On GNU/Linux, the native build system will be a collection of ``Makefile``-s. The ``make`` build tool uses these ``Makefile``-s to transform sources to executables and libraries. + + CMake abstracts the process of generating the ``Makefile``-s away into a generic DSL. + + +A CMake-based build system: + +- can bring your software closer to being platform- *and* compiler-agnostic. +- has good support within many integrated development environments (IDEs). +- automatically tracks and propagates internal dependencies in your project. +- is built on top of well-maintained functionality for automated dependency detection. + + +Hello, CMake! +------------- + + +.. typealong:: Compiling "Hello, world" with CMake + + We will now proceed to compile a single source file to an executable. Choose your favorite language and start typing along! + + .. tabs:: + + .. tab:: C++ + + You can find the file with the complete source code in the + ``content/code/00_hello-cxx`` folder. + + .. literalinclude:: code/00_hello-cxx/hello.cpp + :language: c++ + + A working solution is in the ``solution`` subfolder. + + .. tab:: Fortran + + You can find the file with the complete source code in the + ``content/code/00_hello-f`` folder. + + .. literalinclude:: code/00_hello-f/hello.f90 + :language: fortran + + A working solution is in the ``solution`` subfolder. + + 1. The folder contains only the source code. We need to add a file called ``CMakeLists.txt`` to it. CMake reads the contents of these special files when generating the build system. + + 2. The first thing we will do is declare the requirement on minimum version of CMake: + + .. code-block:: cmake + + cmake_minimum_required(VERSION 3.18) + + 3. Next, we declare our project and its programming language: + + .. code-block:: cmake + + project(Hello LANGUAGES CXX) + + 4. We create an *executable target*. CMake will generate rules in the build system to compile and link our source file into an executable: + + .. code-block:: cmake + + add_executable(hello hello.cpp) + + 5. We are ready to call CMake and get our build system: + + .. code-block:: bash + + $ cmake -S. -Bbuild + + 6. And finally build our executable: + + .. code-block:: bash + + $ cmake --build build + + +Important issues for the ``CMakeLists.txt`` file +------------------------------------------------ + + +1. Any CMake build system will invoke the following commands in its **root** + ``CMakeLists.txt``: + + .. signature:: ``cmake_minimum_required`` + + .. code-block:: cmake + + cmake_minimum_required(VERSION [...] [FATAL_ERROR]) + + .. parameters:: + + ``VERSION``: Minimum and, optionally, maximum version of CMake to use. + + ``FATAL_ERROR``: Raise a fatal error if the version constraint is not satisfied. This option is ignored by CMake >=2.6 + + .. signature:: ``project`` + + .. code-block:: cmake + + project( + [VERSION [.[.[.]]]] + [DESCRIPTION ] + [HOMEPAGE_URL ] + [LANGUAGES ...]) + + .. parameters:: + + ````: The name of the project. + + ``LANGUAGES``: Languages in the project. + + +2. The case of CMake commands does not matter: the DSL is case-insensitive. However, the plain-text files that CMake parses **must be called** ``CMakeLists.txt`` and the case matters! The variable names are also case sensitive! + + +3. The command to add executables to the build system is ``add_executable``: + + .. signature:: ``add_executable`` + + .. code-block:: cmake + + add_executable( [WIN32] [MACOSX_BUNDLE] + [EXCLUDE_FROM_ALL] + [source1] [source2 ...]) + + +4. Using CMake you can abstract the generation of the build system and also the invocation of the build tools. + +.. callout:: Put your ``CMakeLists.txt`` under version control + + All CMake-related files will evolve together with your codebase. It's a good idea to put them under version control. On the contrary, any of the *generated* native build-system files, *e.g.* ``Makefile``-s, should not be version-controlled. + + +.. typealong:: The command-line interface to CMake + + Let us get acquainted with the CMake and especially its command-line interface. + + We can get help at any time with the command + + .. code-block:: bash + + $ cmake --help + + This will output quite a number of options to your screen. We can analyze the last few lines first: + + .. code-block:: text + + Generators + + The following generators are available on this platform (* marks default): + * Unix Makefiles = Generates standard UNIX makefiles. + Green Hills MULTI = Generates Green Hills MULTI files. + Ninja = Generates build.ninja files. + Ninja Multi-Config = Generates build-.ninja files. + Watcom WMake = Generates Watcom WMake makefiles. + CodeBlocks - Ninja = Generates CodeBlocks project files. + CodeBlocks - Unix Makefiles = Generates CodeBlocks project files. + CodeLite - Ninja = Generates CodeLite project files. + CodeLite - Unix Makefiles = Generates CodeLite project files. + Sublime Text 2 - Ninja = Generates Sublime Text 2 project files. + Sublime Text 2 - Unix Makefiles = Generates Sublime Text 2 project files. + Kate - Ninja = Generates Kate project files. + Kate - Unix Makefiles = Generates Kate project files. + Eclipse CDT4 - Ninja = Generates Eclipse CDT 4.0 project files. + Eclipse CDT4 - Unix Makefiles = Generates Eclipse CDT 4.0 project files. + + In CMake terminology, the native build scripts and build tools are called **generators**. On any particular platform, the list will show which native build tools can be used through CMake. They can either be "plain", such as ``Makefile``-s or Ninja, or IDE-like projects. + + The ``-S`` switch specifies which source directory CMake should scan: this is the folder containing the *root* ``CMakeLists.txt``, *i.e.*, the one containing the |project| command. By default, CMake will allow *in-source* builds, *i.e.* storing build artifacts alongside source files. This is **not** good practice: you should always keep build artifacts from sources separate. Fortunately, the ``-B`` switch helps with that, as it is used to give where to store build artifacts, including the generated build system. This is the minimal invocation of ``cmake``: + + .. code-block:: bash + + $ cmake -S. -Bbuild + + To switch to another generator, we will use the ``-G`` switch: + + .. code-block:: bash + + $ cmake -S. -Bbuild -GNinja + + Options to be used at build-system generation are passed with the ``-D`` switch. For example, to change compilers: + + .. code-block:: bash + + $ cmake -S. -Bbuild -GNinja -DCMAKE_CXX_COMPILER=clang++ + + Finally, you can access to the full CMake manual with: + + .. code-block:: bash + + $ cmake --help-full + + You can also inquire about a specific module, command or variable: + + .. code-block:: bash + + $ cmake --help-variable CMAKE_GENERATOR + + +A complete toolchain +-------------------- + + +The family of tools provided with CMake offers a complete toolchain to manage the development cycle: from sources to build artifacts, testing, and deployment. +We refer to these stages as *CMake times* and each tool is appropriate at a specific time. In this workshop, we will discuss: + +- **CMake time** or **configure time**. This is the stage when ``cmake`` is invoked to parse the ``CMakeLists.txt`` in your project, configure and generate the build system. +- **Build time**. This is handled by the native build tools, but, as we have seen, these can be effectively wrapped by ``cmake`` itself. +- **CTest time** or **test time**. At this stage, you will test your build artifacts. + +.. figure:: img/cmake-times.jpg + :align: center + + You can manage all these stages of a software project's lifetime with tools provided by CMake. This figure shows all these stages (*times*) and which tool is appropriate for each. This figure is reproduced from `CMake Cookbook `_ and is licensed under the terms of the `CC-BY-SA `_. + + +Producing libraries +------------------- + +CMake can of course be used to produce libraries as well as executables. The relevant command is ``add_library``: + +.. signature:: ``add_library`` + + .. code-block:: cmake + + add_library( [STATIC | SHARED | MODULE] + [EXCLUDE_FROM_ALL] + [...]) + +You can link libraries into executables with ``target_link_libraries``: + +.. signature:: ``target_link_libraries`` + + .. code-block:: cmake + + target_link_libraries( + ... + [ ...]...) + +.. callout:: Executables and libraries are targets + + We will encounter the term **target** repeatedly. In CMake, a target is any object given as first argument to ``add_executable`` or ``add_library``. Targets are the basic atom in CMake. Whenever you will need to organize complex projects, think in terms of its targets and their mutual dependencies. + + The whole family of CMake commands ``target_*`` can be used to express chains of dependencies and is much more effective than keeping track of state with variables. We will clarify these concepts in :ref:`targets`. + + +.. exercise:: Exercise 1: Producing libraries + + .. tabs:: + + .. tab:: C++ + + You can find a scaffold project in the ``content/code/01_libraries-cxx`` folder. + + #. Write a ``CMakeLists.txt`` to compile the source files ``Message.hpp`` and ``Message.cpp`` into a library. **DO NOT** specify the type of library, shared or static, explicitly. + #. Add an executable from the ``hello-world.cpp`` source file. + #. Link the library into the executable. + + A working solution is in the ``solution`` subfolder. + + .. tab:: Fortran + + You can find a scaffold project in the ``content/code/01_libraries-f`` folder. + + #. Write a ``CMakeLists.txt`` to compile the source files ``message.f90`` into a library. **DO NOT** specify the type of library shared or static, explicitly. + #. Add an executable from the ``hello-world.f90`` source file. + #. Link the library into the executable. + + A working solution is in the ``solution`` subfolder. + + What kind of library did you get? Static or shared? + + +.. keypoints:: + + - CMake is a **build system generator**, not a build system. + - You write ``CMakeLists.txt`` to describe how the build tools will create artifacts from sources. + - You can use the CMake suite of tools to manage the whole lifetime: from source files to tests to deployment. + - The structure of the project is mirrored in the build folder. + diff --git a/_sources/index.rst.txt b/_sources/index.rst.txt new file mode 100644 index 0000000..92ab152 --- /dev/null +++ b/_sources/index.rst.txt @@ -0,0 +1,168 @@ +Introduction to CMake +===================== + + +CMake is a language-agnostic, cross-platform build tool and is nowadays the *de facto* standard, with large projects using it to reliably build, test, and deploy their codebases. + +CMake is not a build system itself, but it generates another system's build files. + +In this workshop, you will learn + +- Write a CMake build system for C/C++ and Fortran projects producing libraries and/or executables. +- Run tests for your code with `CTest`. +- Ensure your build system will work on different platforms. +- (optional) Detect and use external dependencies in your project. +- (optional) Safely and effectively build mixed-language projects (Python+C/C++, Python+Fortran, Fortran+C/C++) + + + +.. prereq:: + + Before attending this workshop, please make sure that you have access to a computer with a compiler for your favorite programming language and a recent version of CMake. + + If you have access to a supercomputer (e.g. a `NAISS system `_) with a compute allocation you can use that during the workshop. Any questions on how to use a particular HPC resource should be directed to the appropriate support desk. + + You can also use your own computer for this workshop, provided that it has the necessary tools installed. + + - If you do not already have these installed, we recommend that you set up an isolated software environment using ``conda``. + - For Windows computers we recommend to use the **Windows Subsystem for Linux (WSL)**. Detailed instructions can be found on the :doc:`setup` page. + + +.. toctree:: + :hidden: + :maxdepth: 1 + + setup + + +.. toctree:: + :hidden: + :maxdepth: 1 + :caption: The lesson + + hello-cmake + cmake-syntax + hello-ctest + probing + dependencies + targets + .. dependencies + .. fetch-content + .. python-bindings + tips-and-tricks + additional-topics + + +.. toctree:: + :hidden: + :maxdepth: 1 + :caption: Additional topics + + .. environment + .. cxx-fortran + + +.. csv-table:: + :widths: auto + :delim: ; + + 20 min ; :doc:`hello-cmake` + 30 min ; :doc:`cmake-syntax` + 30 min ; :doc:`probing` + 20 min ; :doc:`dependencies` + 40 min ; :doc:`targets` + 10 min ; :doc:`tips-and-tricks` + 10 min ; :doc:`additional-topics` + + +.. toctree:: + :maxdepth: 1 + :caption: Reference + + quick-reference + zbibliography + guide + + + +.. _learner-personas: + + + +Who is the course for? +---------------------- + +This course is for students, researchers, engineers, and programmers that have heard of `CMake `_ and want to learn how to use it effectively with projects they are working on. +This course assumes no previous experience with `CMake `_. You will have to be familiar with the tools commonly used to build software in your compiled language of choice (C/C++ or Fortran). + +Specifically, this lesson assumes that participants have some prior experience with or knowledge of the following topics (but no expertise is required): + +- Compiling and linking executables and libraries. +- Differences between shared and static libraries. +- Automated testing. + + + +About this course +----------------- + +This lesson material is originally developed by the `EuroCC National Competence Center Sweden (ENCCS) `_ and taught in the `CMake Workshop `_. +Each lesson episode has clearly defined learning objectives and includes multiple exercises along with solutions, and is therefore also useful for self-learning. + +This material `Introduction to CMake `_ was adapted from the material used for `CMake Workshop `_ and will be use for the `Build Systems Course and Hackathon `_. + +The lesson material is licensed under `CC-BY-4.0 `_ and can be reused in any form (with appropriate credit) in other courses and workshops. Instructors who wish to teach this lesson can refer to the :doc:`guide` for practical advice. + + + +Outreach +-------- + +There are many free online resources regarding CMake: + +- The `CMake official documentation `_. +- The `CMake tutorial `_. +- The `HEP Software Foundation `_ training course. +- The `Building portable code with CMake `_ from the `CodeRefinery `_. + + +You can also consult the following books: + +- **Professional CMake: A Practical Guide** by Craig Scott. +- **CMake Cookbook** by Radovan Bast and Roberto Di Remigio. The accompanying repository is on `GitHub `_ + + + +Credits +------- + +The lesson file structure and browsing layout is inspired by and derived from the `work `_ by `CodeRefinery `_ licensed under the `MIT license `_. We have copied and adapted most of their license text. + + + +Instructional Material +^^^^^^^^^^^^^^^^^^^^^^ + +All ENCCS instructional material is made available under the `Creative Commons Attribution license (CC-BY-4.0) `_. The following is a human-readable summary of (and not a substitute for) the `full legal text of the CC-BY-4.0 license `_. You are free: + +- to **share** - copy and redistribute the material in any medium or format; +- to **adapt** - remix, transform, and build upon the material for any purpose, even commercially. + + +The licensor cannot revoke these freedoms as long as you follow these license terms: + +- **Attribution** - You must give appropriate credit (mentioning that your work is derived from work that is Copyright (c) ENCCS and, where practical, linking to ``_), provide a `link to the license `_, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. +- **No additional restrictions** - You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits. With the understanding that: + + - You do not have to comply with the license for elements of the material in the public domain or where your use is permitted by an applicable exception or limitation. + - No warranties are given. The license may not give you all of the permissions necessary for your intended use. For example, other rights such as publicity, privacy, or moral rights may limit how you use the material. + + + +Software +^^^^^^^^ + +The code samples and exercises in this lesson were adapted from the GitHub repository for the `CMake Cookbook `_. + +Except where otherwise noted, the example programs and other software provided by ENCCS are made available under the `OSI `_-approved `MIT license `_. + diff --git a/_sources/probing.rst.txt b/_sources/probing.rst.txt new file mode 100644 index 0000000..2652f06 --- /dev/null +++ b/_sources/probing.rst.txt @@ -0,0 +1,220 @@ +.. _probing: + + +Probing compilation, linking, and execution +=========================================== + +.. questions:: + + - How can you add custom steps to your build system with CMake? + +.. objectives:: + + - Learn how and when to use ``execute_process`` + - Learn how to use ``add_custom_command`` with targets. + - Learn how to test compilation, linking, and execution. + + +CMake lets you run arbitrary commands at any stage in the project lifecycle. +This is yet another mechanism for fine-grained customization and we will discuss +some of the options in this episode. + + +Running custom commands at *configure-time* +------------------------------------------- + +The most straightforward method is to explicitly run one (or more) child +process(es) when invoking the ``cmake`` command. This is achieved with the +``execute_process`` command. + +.. signature:: `execute_process `_ + + .. code-block:: cmake + + execute_process(COMMAND [args1...]] + [COMMAND [args2...] [...]] + [WORKING_DIRECTORY ] + [TIMEOUT ] + [RESULT_VARIABLE ] + [RESULTS_VARIABLE ] + [OUTPUT_VARIABLE ] + [ERROR_VARIABLE ] + [INPUT_FILE ] + [OUTPUT_FILE ] + [ERROR_FILE ] + [OUTPUT_QUIET] + [ERROR_QUIET] + [OUTPUT_STRIP_TRAILING_WHITESPACE] + [ERROR_STRIP_TRAILING_WHITESPACE] + [ENCODING ]) + + Executes one or more child processes. The standard output and standard error + streams are recorded into ``OUTPUT_VARIABLE`` and ``ERROR_VARIABLE``, + respectively. The result of the last child process is saved into + ``RESULT_VARIABLE``. + + +It is important to note that any command invoked through ``execute_process`` +will only be run at **configure-time**, *i.e.* when running the ``cmake`` +command. You **should not** rely on ``execute_process`` to update any artifacts at +**build-time**. + + +.. exercise:: Exercise xx: Find a Python module + + In this exercise, we'll use `execute_process `_ + to check whether the `cffi `_ Python module is + installed in your environment. On the command line, you would do: + + .. code-block:: bash + + $ python -c "import cffi; print(cffi.__version__)" + + Your goal is to replicate the same in CMake. + The scaffold code is in ``content/code/xx_find_cffi``. + You will have to modify the call to ``execute_process`` to run the command above. + + A working example is in the ``solution`` subfolder. + +Note the use of ``find_package(Python REQUIRED)`` to obtain the ``python`` +executable. CMake comes with many modules dedicated to the detection of +dependencies, such as Python. These are conventionally called +``Find.cmake`` and you can inspect their documentation with: + +.. code-block:: bash + + $ cmake --help-module FindPython | more + +We will revisit uses of ``find_package`` later on in :ref:`dependencies`. + + +Custom commands for your targets +-------------------------------- + +As mentioned, the main problem of ``execute_process`` is that it will run a +command at *configure-time*, when the ``cmake`` command is first invoked. +It is thus *not* a viable alternative if we intend to perform some specific +actions depending on targets or make the result of the custom commands a +dependency for other targets. +Both cases have real-world examples, such as when using automatically generated +code. The CMake command ``add_custom_command`` can be used in some of this +instances. + +.. signature:: `add_custom_command `_ + + .. code-block:: cmake + + add_custom_command(TARGET + PRE_BUILD | PRE_LINK | POST_BUILD + COMMAND command1 [ARGS] [args1...] + [COMMAND command2 [ARGS] [args2...] ...] + [BYPRODUCTS [files...]] + [WORKING_DIRECTORY dir] + [COMMENT comment] + [VERBATIM] [USES_TERMINAL]) + + Add one or more custom commands to a target, such as a library or an + executable. The commands can be executed before linking (with ``PRE_BUILD`` + and ``PRE_LINK``) or after (with ``POST_BUILD``) + + +.. exercise:: Exercise 18: Before and after build + + We want to perform some action before and after building a target, in this case a Fortran executable: + + - Before building, we want to read the link line, as produced by CMake, and + echo it to standard output. We use the ``echo-file.py`` Python script. + - After building, we want to check the size of the static allocations in the + binary, by invoking the ``size`` command. We use the ``static-size.py`` Python script. + + The scaffold code is in ``content/code/xx_pre_post-f``. + + #. Add CMake commands to build the ``example`` executable from the Fortran + sources. Find the text file with the link line under the build folder. + Hint: have a look in ``CMakeFiles`` and keep in mind the name you gave to + the target. + #. Call ``add_custom_command`` with ``PRE_LINK`` to invoke the ``echo-file.py`` Python script. + #. Call ``add_custom_command`` with ``POST_BUILD`` to invoke the ``static-size.py`` Python script. + + A working example is in the ``solution`` subfolder. + + +Testing compilation, linking, and execution +------------------------------------------- + +We also want to be able to run checks on our compilers and linkers. Or check whether a certain library can be used correctly before attempting to build our own artifacts. +CMake provides modules and commands for these purposes: + +- ``CheckCompilerFlag`` providing the ``check__compiler_flag`` + function, to check whether a compiler flag is valid for the compiler in use. +- ``CheckSourceCompiles`` providing the ``check__source_compiles``. + Which check whether a given source file compiles with the compiler in use. +- ``CheckSourceRuns`` providing the ``check__source_runs``, to make + sure that a given source snippet compiles, links, and runs. + +In all cases, ```` can be one of ``CXX``, ``C`` or ``Fortran``. + +.. exercise:: Exercise 19: Check that a compiler accepts a compiler flag + + Compilers evolve: they add and/or remove flags and sometimes you will face + the need to test whether some flags are available before using them in your + build. + + The scaffold code is in ``content/code/xx_check_compiler_flag``. + + #. Implement a ``CMakeLists.txt`` to build an executable from the + ``asan-example.cpp`` source file. + #. Check that the address sanitizer flags are available with + ``check_cxx_compiler_flag``. The flags to check are ``-fsanitize=address + -fno-omit-frame-pointer``. Find the command signature with: + + .. code-block:: bash + + $ cmake --help-module CMakeCXXCompilerFlag + + #. If the flags do work, add them to the those used to compile the executable + target with ``target_compile_options``. + + A working example is in the ``solution`` subfolder. + + +.. exercise:: Exercise 20: Testing runtime capabilities + + Testing that some features will work properly for your code requires not only + compiling an object files, but also linking an executable and running it + successfully. + + The scaffold code is in ``content/code/xx_check_source_runs``. + + #. Create an executable target from the source file ``use-uuid.cpp``. + #. Add a check that linking against the library produces working executables. + Use the following C code as test: + + .. code-block:: c + + #include + + int main(int argc, char * argv[]) { + uuid_t uuid; + uuid_generate(uuid); + return 0; + } + + ``check_c_source_runs`` requires the test source code to be passed in as + a *string*. Find the command signature with: + + .. code-block:: bash + + $ cmake --help-module CheckCSourceRuns + + #. If the test is successful, link executable target against the UUID + library: use the ``PkgConfig::UUID`` target as argument to + ``target_link_libraries``. + + A working example is in the ``solution`` subfolder. + + +.. keypoints:: + + - You can customize the build system by executing custom commands. + - CMake offers commands to probe compilation, linking, and execution. diff --git a/_sources/quick-reference.rst.txt b/_sources/quick-reference.rst.txt new file mode 100644 index 0000000..492da1e --- /dev/null +++ b/_sources/quick-reference.rst.txt @@ -0,0 +1,2 @@ +Quick Reference +=============== diff --git a/_sources/setup.rst.txt b/_sources/setup.rst.txt new file mode 100644 index 0000000..6ac98e5 --- /dev/null +++ b/_sources/setup.rst.txt @@ -0,0 +1,46 @@ +Setting up your system +====================== + + +In order to follow this workshop, you will need access to compilers, Python and CMake. You can use an HPC cluster if you have access to one, but the instructions here cover how to install the prerequisites on your own computer. + +We also show how you can use `Binder +`_ to run in the cloud. + +These instructions are based on installing compilers and CMake via the `Conda package and environment manager `_, as it provides a convenient way to install binary packages in an isolated software environment. + + +For Windows users +----------------- + + +We strongly recommend to use (and install if necessary) the **Windows Subsystem for Linux (WSL)** as it is a powerful tool which will likely be useful also after the workshop. Inside WSL you will need Python 3 and the conda environment manager. A useful guide to doing this is found at `HERE `_. The installation of the required dependencies in a WSL terminal is documented below. + + +For MacOS and Linux users +------------------------- + + +MacOS and Linux users can simply open a terminal and install +`Miniconda `_: + +- For MacOS see `HERE `_. +- For Linux see `HERE `_. + + +Creating an environment and installing packages +----------------------------------------------- + + +Once you have ``conda`` installed (and ``WSL`` if you're using Windows OS) you can use the :download:`environment.yml <../environment.yml>` file to install dependencies. + +First save it to your hard drive by clicking the link, and then in a terminal navigate to where you saved the file and type:: + + conda env create -f environment.yml + +You then need to activate the new environment by:: + + conda activate intro-to-cmake + +Now you should have CMake, compilers, Python and a few other packages installed! + diff --git a/_sources/targets.rst.txt b/_sources/targets.rst.txt new file mode 100644 index 0000000..6fe1505 --- /dev/null +++ b/_sources/targets.rst.txt @@ -0,0 +1,291 @@ +.. _targets: + + +Target-based build systems with CMake +===================================== + + +.. questions:: + + - How can we handle more complex projects with CMake? + - What exactly are **targets** in the CMake domain-specific language (DSL)? + +.. objectives:: + + - Learn that the **basic elements** in CMake are not variables, but targets. + - Learn about properties of targets and how to use them. + - Learn how to use *visibility levels* to express dependencies between targets. + - Learn how to work with projects spanning multiple folders. + - Learn how to handle multiple targets in one project. + + +Real-world projects require more than compiling a few source files into executables and/or libraries. In most cases, you will come to projects comprising hundreds of source files sprawling in a complex source tree. + + +With the advent of CMake 3.0, also known as **Modern CMake**, there has been a significant shift that the CMake domain-specific language (DSL) is structured, which can help you keep the complexity of the build system in check. Rather than relying on **variables** to convey information in a project, all what you need in modern CMake is **targets** and **properties**. + + + +Targets +------- + + +A target is the basic element in the CMake DSL, which can be declared by either ``add_executable`` or ``add_library``. Any target has a collection of **properties**, which define: + +* *how* the build artifact should be produced, +* *how* it should be used by other targets in the project that depend on it. + + +.. figure:: img/target.svg + :align: center + + Compile options, definitions, include directories, source files, link libraries, and link options are properties of targets. These properties can be read with ``get_target_property`` and modified with ``set_target_properties``. + + + +In CMake, the five most used commands used to handle targets are: + +- ``target_sources``, specifying which source files to use when compiling a target. +- ``target_compile_options``, specifying which compiler flags to use. +- ``target_compile_definitions``, specifying which compiler definitions to use. +- ``target_include_directories``, specifying which directories will contain header (for C/C++) and module (for Fortran) files. +- ``target_link_libraries``, specifying which libraries to link into the current target. + + +There are additional commands in the ``target_*`` family: + +.. code-block:: bash + + $ cmake --help-command-list | grep "^target_" + + target_compile_definitions + target_compile_features + target_compile_options + target_include_directories + target_link_directories + target_link_libraries + target_link_options + target_precompile_headers + target_sources + + + +Visibility levels +----------------- + + +Why it is robust to use targets and properties than using variables? Given a target ``tgtX``, we can invoke one command in the ``target_*`` family as follows. + +.. code-block:: cmake + + target_link_libraries(tgtX + PRIVATE tgt1 + INTERFACE tgt2 + PUBLIC tgt3 + ) + + +.. figure:: img/target_inheritance.svg + :align: center + + Properties on targets have varied **visibility levels**, which determine how CMake should propagate them between interdependent targets. + + + +.. callout:: Understanding visibility levels + + + Visibility levels ``PRIVATE``, ``PUBLIC``, or ``INTERFACE`` are very powerful and herein we will briefly demonstrate their difference. + + In this demo, we split the source code into 3 libraries and all files are available in the ``content/code/xx_visibility-levels/`` folder. + + .. code-block:: bash + + . + ├── CMakeLists.txt + ├── greeting + │   ├── greeting.cpp + │   └── greeting.hpp + ├── hello_world + │   ├── hello_world.cpp + │   └── hello_world.hpp + ├── main.cpp + └── world + ├── world.cpp + └── world.hpp + + +In this source code, the main function links to greeting which links to hello_world which links to world. + + +.. typealong:: The internal dependency tree + + If you have installed ``Graphviz``, you can visualize the dependencies between these targets: + + .. code-block:: console + + $ cd build + $ cmake --graphviz=project.dot .. + $ dot -T svg project.dot -o graphviz-greeting-hello-world.svg + + .. figure:: img/graphviz-greeting-hello-world.svg + :align: center + + The dependencies between the four targets in the code example. + + + +Take a look at the ``CMakeLists.txt``: + + +.. literalinclude:: code/xx_visibility-levels/CMakeLists.txt + :language: cmake + :linenos: + :emphasize-lines: 17 + + +.. exercise:: Testing the 3 different visibility levels + + 1. Browse, configure, build, and run the code. + + 2. Uncomment the highlighted line (line 17) with ``target_compile_definitions``, configure into a fresh folder, and build using the commands below. You will see that the definition is used in ``world.cpp`` but nowhere else. + + .. code-block:: console + + $ cmake -S. -Bbuild_private + $ cmake --build build_private + + 3. Change the definition to ``PUBLIC``, configure into a fresh folder, and build. You will see that the definition is used both in ``world.cpp`` and ``hello_world.cpp``. + + .. code-block:: console + + $ cmake -S. -Bbuild_public + $ cmake --build build_public + + 4. Then change the definition to ``INTERFACE``, configure into a fresh folder, and build. You will see that the definition is used only in ``hello_world.cpp`` but not in ``world.cpp``. + + .. code-block:: console + + $ cmake -S. -Bbuild_interface + $ cmake --build build_interface + + + +Properties +---------- + + +CMake lets you set properties at many different levels of visibility across the project: + +- **Global scope**. These are equivalent to variables set in the root ``CMakeLists.txt``. Their use is, however, more powerful as they can be set from *any* leaf ``CMakeLists.txt``. +- **Directory scope**. These are equivalent to variables set in a given leaf ``CMakeLists.txt``. +- **Target**. These are the properties set on targets that we discussed above. +- **Test**. +- **Source files**. For example, compiler flags. +- **Cache entries**. +- **Installed files**. + + +For a complete list of properties known to CMake: + +.. code-block:: bash + + $ cmake --help-properties | less + + +You can get the current value of any property with ``get_property`` and set the value of any property with ``set_property``. + + + +Multiple folders +---------------- + + +In the code example about the visibility levels, we have split a project into three folders and libraries but we kept one ``CMakeLists.txt``. As the project grows, this becomes impractical for humans (the CMake computer overlords will not mind) and maintenance becomes easier if we split the CMake configuration into multiple ``CMakeLists.txt`` with the help of ``add_subdirectory``. Our goal is to have a ``CMakeLists.txt`` as close as possible to the source files. + +.. code-block:: text + + project/ + ├── CMakeLists.txt <--- Root + ├── external + │   ├── CMakeLists.txt <--- Leaf at level 1 + └── src +    ├── CMakeLists.txt <--- Leaf at level 1 +    ├── evolution +    │   ├── CMakeLists.txt <--- Leaf at level 2 +    ├── initial +    │   ├── CMakeLists.txt <--- Leaf at level 2 +    ├── io +    │   ├── CMakeLists.txt <--- Leaf at level 2 +    └── parser + └── CMakeLists.txt <--- Leaf at level 2 + + +Each folder in a multi-folder project will contain a ``CMakeLists.txt``: a source tree with one **root** and many **leaves**. + +- The root ``CMakeLists.txt`` will contain the invocation of the ``project`` command: variables and targets declared in the root have effectively global scope. +- The ``PROJECT_SOURCE_DIR`` will point to the folder containing the root ``CMakeLists.txt``. +- In order to move between the root and a leaf or between leaves, you will use the ``add_subdirectory`` command. + + +Typically, you only need to pass the first argument: the folder within the build tree will be automatically computed by CMake. We can declare targets at any level, not necessarily the root: a target is visible at the level at which it is declared and all higher levels. + + + +.. exercise:: Exercise yy: Cellular automata + + Let's work with a project spanning multiple folders. We will implement a relatively simple code to compute and print to screen elementary `cellular automata `_. We separate the sources into ``src`` and ``external`` to simulate a nested project which reuses an external project. + + Your goal is to: + + - 1. Build the main executable at ``content/code/yy_automata-cxx/`` for C++ and ``content/code/yy_automata-f/`` for Fortran. + - 2. Where are the obtained executables located in the build tree? Remember that CMake generates a build tree mirroring the source tree. + - 3. The executable will accept 3 arguments: the length, number of steps, and + automaton rule. You can run it with: + + .. code-block:: bash + + $ automata 40 5 30 + + The output will be: + + .. code-block:: text + + length: 40 + number of steps: 5 + rule: 30 + * + *** + ** * + ** **** + ** * * + ** **** *** + + + +.. typealong:: The internal dependency tree + + You can visualize the dependencies between targets in the project with Graphviz: + + .. code-block:: bash + + $ cd build + $ cmake --graphviz=project.dot .. + $ dot -T svg project.dot -o project.svg + + .. figure:: img/graphviz-multiple-folder-project.svg + :align: center + + The dependencies between targets in the cellular automata project. + + + +.. keypoints:: + + - Using **targets**, you can achieve granular control over how artifacts are built and how their dependencies are handled. + - Compiler flags, definitions, source files, include folders, link libraries, and linker options are **properties** of a target. + - Avoid using variables to express dependencies between targets: use visibility levels ``PRIVATE``, ``INTERFACE``, ``PUBLIC`` and let CMake figure out the details. + - To keep the complexity of the build system at a minimum, each folder in a multi-folder project should have its own CMake script. + + + diff --git a/_sources/tips-and-tricks.rst.txt b/_sources/tips-and-tricks.rst.txt new file mode 100644 index 0000000..b901f8f --- /dev/null +++ b/_sources/tips-and-tricks.rst.txt @@ -0,0 +1,166 @@ +.. _tips-and-tricks: + + +Tips and tricks using CMake +============================ + + +.. objectives:: + + - Learn what tools exist to structure projects as they grow. + - Discuss the value of localizing scope and avoiding side effects. + - Recognize more maintainable and less maintainable patterns. + + +As projects grow, code structures get more complicated: more possibilities, more corner cases, more options to users, and more developers who are contributing and may not oversee the entire CMake structure. In this episode we will mention a couple of tools to bring some structure and flow-control into larger projects. [#adapt_from_CR]_ + + + +Listing sources or globbing them +-------------------------------- + + +In all our examples we have listed all sources when defining targets. + +In CMake, you can glob patters (*e.g.* all files that end with ``*.cpp``) without listing them explicitly. This is tempting, but we advice **against** doing this. The reason is that CMake cannot **guarantee** correct tracking dependency changes when you add files after you have configured. [#glob]_ + +Listing files explicitly also allows to ``grep`` for them in the CMake code to see where a modification is likely needed. This can help colleagues in our projects who are not familiar with CMake to find out where to change things. + + + +Options and flow control +------------------------ + + +You may want to give users the possibility to decide whether they want to enable an option or not. + +.. code-block:: cmake + + # by default this one will be ON + option(ENABLE_MPI "Configure for MPI parallelization" ON) + + if(ENABLE_MPI) + find_package(MPI REQUIRED COMPONENTS Fortran) + else() + message(STATUS "no problem, building without MPI") + endif() + +Now the users can decide: + +.. code-block:: console + + $ cmake -S. -Bbuild -DENABLE_MPI=OFF + + + +Organizing files into modules +----------------------------- + + +Modules are collections of functions and macros and are either CMake- or user-defined. CMake comes with a rich ecosystem of modules and you will probably write a few of your own to encapsulate frequently used functions or macros in your CMake scripts. + +You can collect related CMake-code into a file called ``my_lengthy_code.cmake`` and then include it in another CMake code as shown below. This can help organizing projects that are growing out of hand and separate concerns. + +.. code-block:: cmake + + include(my_lengthy_code) + + + +Variables vs. targets +--------------------- + + +In :ref:`targets` we have motivated why targets are preferable over variables. + +When you portion your project into modules, then variable declaration impose an order and the risk is high that somebody will not know about the implicit order and reorder modules one day and the behavior will change. + +Try to minimize the use of user-defined variables. They can point to a sub-optimal solution and a better, more state-less, declarative, solution may exist. + + + +Functions and macros +-------------------- + + +**Functions** and **macros** are built on top of the basic built-in commands and are either CMake- or user-defined. These prove useful to avoid repetition in your CMake scripts. The difference between a function and a macro is their **scope**: + +#. Functions have their own scope: variables defined inside a function are not propagated back to the caller. +#. Macros do not have their own scope: variables from the parent scope can be modified and new variables in the parent scope can be set. + +**Prefer functions over macros to minimize side-effects**. + + + +Where to list sources and tests? +-------------------------------- + + +Some projects collect all sources in one file, all tests in another file, and carry them across in variables: + +.. code-block:: text + + project/ + ├── CMakeLists.txt + ├── cmake + | ├── sources.cmake + | ├── tests.cmake + | └── definitions.cmake + ├── external + └── src + ├── evolution + ├── initial + ├── io + └── parser + +It is recommended to organize the sources like the format below, where sources, definitions, and tests are defined in the "closest" ``CMakeLists.txt`` files. + +.. code-block:: text + + project/ + ├── CMakeLists.txt + ├── external + │ ├── CMakeLists.txt + └── src + ├── CMakeLists.txt + ├── evolution + │ ├── CMakeLists.txt + ├── initial + │ ├── CMakeLists.txt + ├── io + │ ├── CMakeLists.txt + └── parser + └── CMakeLists.txt + + +The reason is that this will minimize side-effects, ordering effects, and simplify maintenance for those who want to add or rename source files: they can do it in one place, close to where they are coding. + + + +Order and side effects +---------------------- + + +- When portioning your project into modules, design them in a way so that order does not matter (much). +- This is easier with functions than with macros, and easier with targets than with variables. +- Avoid variables with parent or global scope. Encapsulate and prefer separation of concerns. + + + +Where to keep generated files +----------------------------- + + +CMake allows us to generate files at configure- or build-time. When generating files, we recommend to **always** generate into the build folder, never outside. + +The reason is that you always want to maintain the possibility to configure different builds with the same source without having to copy the entire project to a different place. + + + + +.. rubric:: Footnotes + +.. [#adapt_from_CR] This episode is adapted, with permission, from the `CodeRefinery CMake lesson `_. + +.. [#glob] A glob would be done using the ``file`` command. We quote the explanation in the official documentation as to why it is generally not safe to use the ``GLOB`` subcommand: *If no ``CMakeLists.txt`` file changes when a source is added or removed then the generated build system cannot know when to ask CMake to regenerate. The ``CONFIGURE_DEPENDS`` flag may not work reliably on all generators, or if a new generator is added in the future that cannot support it, projects using it will be stuck. Even if ``CONFIGURE_DEPENDS`` works reliably, there is still a cost to perform the check on every rebuild.* + diff --git a/_static/ENCCS.jpg b/_static/ENCCS.jpg new file mode 100644 index 0000000..da2355c Binary files /dev/null and b/_static/ENCCS.jpg differ diff --git a/_static/_sphinx_javascript_frameworks_compat.js b/_static/_sphinx_javascript_frameworks_compat.js new file mode 100644 index 0000000..8141580 --- /dev/null +++ b/_static/_sphinx_javascript_frameworks_compat.js @@ -0,0 +1,123 @@ +/* Compatability shim for jQuery and underscores.js. + * + * Copyright Sphinx contributors + * Released under the two clause BSD licence + */ + +/** + * small helper function to urldecode strings + * + * See https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/decodeURIComponent#Decoding_query_parameters_from_a_URL + */ +jQuery.urldecode = function(x) { + if (!x) { + return x + } + return decodeURIComponent(x.replace(/\+/g, ' ')); +}; + +/** + * small helper function to urlencode strings + */ +jQuery.urlencode = encodeURIComponent; + +/** + * This function returns the parsed url parameters of the + * current request. Multiple values per key are supported, + * it will always return arrays of strings for the value parts. + */ +jQuery.getQueryParameters = function(s) { + if (typeof s === 'undefined') + s = document.location.search; + var parts = s.substr(s.indexOf('?') + 1).split('&'); + var result = {}; + for (var i = 0; i < parts.length; i++) { + var tmp = parts[i].split('=', 2); + var key = jQuery.urldecode(tmp[0]); + var value = jQuery.urldecode(tmp[1]); + if (key in result) + result[key].push(value); + else + result[key] = [value]; + } + return result; +}; + +/** + * highlight a given string on a jquery object by wrapping it in + * span elements with the given class name. + */ +jQuery.fn.highlightText = function(text, className) { + function highlight(node, addItems) { + if (node.nodeType === 3) { + var val = node.nodeValue; + var pos = val.toLowerCase().indexOf(text); + if (pos >= 0 && + !jQuery(node.parentNode).hasClass(className) && + !jQuery(node.parentNode).hasClass("nohighlight")) { + var span; + var isInSVG = jQuery(node).closest("body, svg, foreignObject").is("svg"); + if (isInSVG) { + span = document.createElementNS("http://www.w3.org/2000/svg", "tspan"); + } else { + span = document.createElement("span"); + span.className = className; + } + span.appendChild(document.createTextNode(val.substr(pos, text.length))); + node.parentNode.insertBefore(span, node.parentNode.insertBefore( + document.createTextNode(val.substr(pos + text.length)), + node.nextSibling)); + node.nodeValue = val.substr(0, pos); + if (isInSVG) { + var rect = document.createElementNS("http://www.w3.org/2000/svg", "rect"); + var bbox = node.parentElement.getBBox(); + rect.x.baseVal.value = bbox.x; + rect.y.baseVal.value = bbox.y; + rect.width.baseVal.value = bbox.width; + rect.height.baseVal.value = bbox.height; + rect.setAttribute('class', className); + addItems.push({ + "parent": node.parentNode, + "target": rect}); + } + } + } + else if (!jQuery(node).is("button, select, textarea")) { + jQuery.each(node.childNodes, function() { + highlight(this, addItems); + }); + } + } + var addItems = []; + var result = this.each(function() { + highlight(this, addItems); + }); + for (var i = 0; i < addItems.length; ++i) { + jQuery(addItems[i].parent).before(addItems[i].target); + } + return result; +}; + +/* + * backward compatibility for jQuery.browser + * This will be supported until firefox bug is fixed. + */ +if (!jQuery.browser) { + jQuery.uaMatch = function(ua) { + ua = ua.toLowerCase(); + + var match = /(chrome)[ \/]([\w.]+)/.exec(ua) || + /(webkit)[ \/]([\w.]+)/.exec(ua) || + /(opera)(?:.*version|)[ \/]([\w.]+)/.exec(ua) || + /(msie) ([\w.]+)/.exec(ua) || + ua.indexOf("compatible") < 0 && /(mozilla)(?:.*? rv:([\w.]+)|)/.exec(ua) || + []; + + return { + browser: match[ 1 ] || "", + version: match[ 2 ] || "0" + }; + }; + jQuery.browser = {}; + jQuery.browser[jQuery.uaMatch(navigator.userAgent).browser] = true; +} diff --git a/_static/basic.css b/_static/basic.css new file mode 100644 index 0000000..f316efc --- /dev/null +++ b/_static/basic.css @@ -0,0 +1,925 @@ +/* + * basic.css + * ~~~~~~~~~ + * + * Sphinx stylesheet -- basic theme. + * + * :copyright: Copyright 2007-2024 by the Sphinx team, see AUTHORS. + * :license: BSD, see LICENSE for details. + * + */ + +/* -- main layout ----------------------------------------------------------- */ + +div.clearer { + clear: both; +} + +div.section::after { + display: block; + content: ''; + clear: left; +} + +/* -- relbar ---------------------------------------------------------------- */ + +div.related { + width: 100%; + font-size: 90%; +} + +div.related h3 { + display: none; +} + +div.related ul { + margin: 0; + padding: 0 0 0 10px; + list-style: none; +} + +div.related li { + display: inline; +} + +div.related li.right { + float: right; + margin-right: 5px; +} + +/* -- sidebar --------------------------------------------------------------- */ + +div.sphinxsidebarwrapper { + padding: 10px 5px 0 10px; +} + +div.sphinxsidebar { + float: left; + width: 230px; + margin-left: -100%; + font-size: 90%; + word-wrap: break-word; + overflow-wrap : break-word; +} + +div.sphinxsidebar ul { + list-style: none; +} + +div.sphinxsidebar ul ul, +div.sphinxsidebar ul.want-points { + margin-left: 20px; + list-style: square; +} + +div.sphinxsidebar ul ul { + margin-top: 0; + margin-bottom: 0; +} + +div.sphinxsidebar form { + margin-top: 10px; +} + +div.sphinxsidebar input { + border: 1px solid #98dbcc; + font-family: sans-serif; + font-size: 1em; +} + +div.sphinxsidebar #searchbox form.search { + overflow: hidden; +} + +div.sphinxsidebar #searchbox input[type="text"] { + float: left; + width: 80%; + padding: 0.25em; + box-sizing: border-box; +} + +div.sphinxsidebar #searchbox input[type="submit"] { + float: left; + width: 20%; + border-left: none; + padding: 0.25em; + box-sizing: border-box; +} + + +img { + border: 0; + max-width: 100%; +} + +/* -- search page ----------------------------------------------------------- */ + +ul.search { + margin: 10px 0 0 20px; + padding: 0; +} + +ul.search li { + padding: 5px 0 5px 20px; + background-image: url(file.png); + background-repeat: no-repeat; + background-position: 0 7px; +} + +ul.search li a { + font-weight: bold; +} + +ul.search li p.context { + color: #888; + margin: 2px 0 0 30px; + text-align: left; +} + +ul.keywordmatches li.goodmatch a { + font-weight: bold; +} + +/* -- index page ------------------------------------------------------------ */ + +table.contentstable { + width: 90%; + margin-left: auto; + margin-right: auto; +} + +table.contentstable p.biglink { + line-height: 150%; +} + +a.biglink { + font-size: 1.3em; +} + +span.linkdescr { + font-style: italic; + padding-top: 5px; + font-size: 90%; +} + +/* -- general index --------------------------------------------------------- */ + +table.indextable { + width: 100%; +} + +table.indextable td { + text-align: left; + vertical-align: top; +} + +table.indextable ul { + margin-top: 0; + margin-bottom: 0; + list-style-type: none; +} + +table.indextable > tbody > tr > td > ul { + padding-left: 0em; +} + +table.indextable tr.pcap { + height: 10px; +} + +table.indextable tr.cap { + margin-top: 10px; + background-color: #f2f2f2; +} + +img.toggler { + margin-right: 3px; + margin-top: 3px; + cursor: pointer; +} + +div.modindex-jumpbox { + border-top: 1px solid #ddd; + border-bottom: 1px solid #ddd; + margin: 1em 0 1em 0; + padding: 0.4em; +} + +div.genindex-jumpbox { + border-top: 1px solid #ddd; + border-bottom: 1px solid #ddd; + margin: 1em 0 1em 0; + padding: 0.4em; +} + +/* -- domain module index --------------------------------------------------- */ + +table.modindextable td { + padding: 2px; + border-collapse: collapse; +} + +/* -- general body styles --------------------------------------------------- */ + +div.body { + min-width: 360px; + max-width: 800px; +} + +div.body p, div.body dd, div.body li, div.body blockquote { + -moz-hyphens: auto; + -ms-hyphens: auto; + -webkit-hyphens: auto; + hyphens: auto; +} + +a.headerlink { + visibility: hidden; +} + +a:visited { + color: #551A8B; +} + +h1:hover > a.headerlink, +h2:hover > a.headerlink, +h3:hover > a.headerlink, +h4:hover > a.headerlink, +h5:hover > a.headerlink, +h6:hover > a.headerlink, +dt:hover > a.headerlink, +caption:hover > a.headerlink, +p.caption:hover > a.headerlink, +div.code-block-caption:hover > a.headerlink { + visibility: visible; +} + +div.body p.caption { + text-align: inherit; +} + +div.body td { + text-align: left; +} + +.first { + margin-top: 0 !important; +} + +p.rubric { + margin-top: 30px; + font-weight: bold; +} + +img.align-left, figure.align-left, .figure.align-left, object.align-left { + clear: left; + float: left; + margin-right: 1em; +} + +img.align-right, figure.align-right, .figure.align-right, object.align-right { + clear: right; + float: right; + margin-left: 1em; +} + +img.align-center, figure.align-center, .figure.align-center, object.align-center { + display: block; + margin-left: auto; + margin-right: auto; +} + +img.align-default, figure.align-default, .figure.align-default { + display: block; + margin-left: auto; + margin-right: auto; +} + +.align-left { + text-align: left; +} + +.align-center { + text-align: center; +} + +.align-default { + text-align: center; +} + +.align-right { + text-align: right; +} + +/* -- sidebars -------------------------------------------------------------- */ + +div.sidebar, +aside.sidebar { + margin: 0 0 0.5em 1em; + border: 1px solid #ddb; + padding: 7px; + background-color: #ffe; + width: 40%; + float: right; + clear: right; + overflow-x: auto; +} + +p.sidebar-title { + font-weight: bold; +} + +nav.contents, +aside.topic, +div.admonition, div.topic, blockquote { + clear: left; +} + +/* -- topics ---------------------------------------------------------------- */ + +nav.contents, +aside.topic, +div.topic { + border: 1px solid #ccc; + padding: 7px; + margin: 10px 0 10px 0; +} + +p.topic-title { + font-size: 1.1em; + font-weight: bold; + margin-top: 10px; +} + +/* -- admonitions ----------------------------------------------------------- */ + +div.admonition { + margin-top: 10px; + margin-bottom: 10px; + padding: 7px; +} + +div.admonition dt { + font-weight: bold; +} + +p.admonition-title { + margin: 0px 10px 5px 0px; + font-weight: bold; +} + +div.body p.centered { + text-align: center; + margin-top: 25px; +} + +/* -- content of sidebars/topics/admonitions -------------------------------- */ + +div.sidebar > :last-child, +aside.sidebar > :last-child, +nav.contents > :last-child, +aside.topic > :last-child, +div.topic > :last-child, +div.admonition > :last-child { + margin-bottom: 0; +} + +div.sidebar::after, +aside.sidebar::after, +nav.contents::after, +aside.topic::after, +div.topic::after, +div.admonition::after, +blockquote::after { + display: block; + content: ''; + clear: both; +} + +/* -- tables ---------------------------------------------------------------- */ + +table.docutils { + margin-top: 10px; + margin-bottom: 10px; + border: 0; + border-collapse: collapse; +} + +table.align-center { + margin-left: auto; + margin-right: auto; +} + +table.align-default { + margin-left: auto; + margin-right: auto; +} + +table caption span.caption-number { + font-style: italic; +} + +table caption span.caption-text { +} + +table.docutils td, table.docutils th { + padding: 1px 8px 1px 5px; + border-top: 0; + border-left: 0; + border-right: 0; + border-bottom: 1px solid #aaa; +} + +th { + text-align: left; + padding-right: 5px; +} + +table.citation { + border-left: solid 1px gray; + margin-left: 1px; +} + +table.citation td { + border-bottom: none; +} + +th > :first-child, +td > :first-child { + margin-top: 0px; +} + +th > :last-child, +td > :last-child { + margin-bottom: 0px; +} + +/* -- figures --------------------------------------------------------------- */ + +div.figure, figure { + margin: 0.5em; + padding: 0.5em; +} + +div.figure p.caption, figcaption { + padding: 0.3em; +} + +div.figure p.caption span.caption-number, +figcaption span.caption-number { + font-style: italic; +} + +div.figure p.caption span.caption-text, +figcaption span.caption-text { +} + +/* -- field list styles ----------------------------------------------------- */ + +table.field-list td, table.field-list th { + border: 0 !important; +} + +.field-list ul { + margin: 0; + padding-left: 1em; +} + +.field-list p { + margin: 0; +} + +.field-name { + -moz-hyphens: manual; + -ms-hyphens: manual; + -webkit-hyphens: manual; + hyphens: manual; +} + +/* -- hlist styles ---------------------------------------------------------- */ + +table.hlist { + margin: 1em 0; +} + +table.hlist td { + vertical-align: top; +} + +/* -- object description styles --------------------------------------------- */ + +.sig { + font-family: 'Consolas', 'Menlo', 'DejaVu Sans Mono', 'Bitstream Vera Sans Mono', monospace; +} + +.sig-name, code.descname { + background-color: transparent; + font-weight: bold; +} + +.sig-name { + font-size: 1.1em; +} + +code.descname { + font-size: 1.2em; +} + +.sig-prename, code.descclassname { + background-color: transparent; +} + +.optional { + font-size: 1.3em; +} + +.sig-paren { + font-size: larger; +} + +.sig-param.n { + font-style: italic; +} + +/* C++ specific styling */ + +.sig-inline.c-texpr, +.sig-inline.cpp-texpr { + font-family: unset; +} + +.sig.c .k, .sig.c .kt, +.sig.cpp .k, .sig.cpp .kt { + color: #0033B3; +} + +.sig.c .m, +.sig.cpp .m { + color: #1750EB; +} + +.sig.c .s, .sig.c .sc, +.sig.cpp .s, .sig.cpp .sc { + color: #067D17; +} + + +/* -- other body styles ----------------------------------------------------- */ + +ol.arabic { + list-style: decimal; +} + +ol.loweralpha { + list-style: lower-alpha; +} + +ol.upperalpha { + list-style: upper-alpha; +} + +ol.lowerroman { + list-style: lower-roman; +} + +ol.upperroman { + list-style: upper-roman; +} + +:not(li) > ol > li:first-child > :first-child, +:not(li) > ul > li:first-child > :first-child { + margin-top: 0px; +} + +:not(li) > ol > li:last-child > :last-child, +:not(li) > ul > li:last-child > :last-child { + margin-bottom: 0px; +} + +ol.simple ol p, +ol.simple ul p, +ul.simple ol p, +ul.simple ul p { + margin-top: 0; +} + +ol.simple > li:not(:first-child) > p, +ul.simple > li:not(:first-child) > p { + margin-top: 0; +} + +ol.simple p, +ul.simple p { + margin-bottom: 0; +} + +aside.footnote > span, +div.citation > span { + float: left; +} +aside.footnote > span:last-of-type, +div.citation > span:last-of-type { + padding-right: 0.5em; +} +aside.footnote > p { + margin-left: 2em; +} +div.citation > p { + margin-left: 4em; +} +aside.footnote > p:last-of-type, +div.citation > p:last-of-type { + margin-bottom: 0em; +} +aside.footnote > p:last-of-type:after, +div.citation > p:last-of-type:after { + content: ""; + clear: both; +} + +dl.field-list { + display: grid; + grid-template-columns: fit-content(30%) auto; +} + +dl.field-list > dt { + font-weight: bold; + word-break: break-word; + padding-left: 0.5em; + padding-right: 5px; +} + +dl.field-list > dd { + padding-left: 0.5em; + margin-top: 0em; + margin-left: 0em; + margin-bottom: 0em; +} + +dl { + margin-bottom: 15px; +} + +dd > :first-child { + margin-top: 0px; +} + +dd ul, dd table { + margin-bottom: 10px; +} + +dd { + margin-top: 3px; + margin-bottom: 10px; + margin-left: 30px; +} + +.sig dd { + margin-top: 0px; + margin-bottom: 0px; +} + +.sig dl { + margin-top: 0px; + margin-bottom: 0px; +} + +dl > dd:last-child, +dl > dd:last-child > :last-child { + margin-bottom: 0; +} + +dt:target, span.highlighted { + background-color: #fbe54e; +} + +rect.highlighted { + fill: #fbe54e; +} + +dl.glossary dt { + font-weight: bold; + font-size: 1.1em; +} + +.versionmodified { + font-style: italic; +} + +.system-message { + background-color: #fda; + padding: 5px; + border: 3px solid red; +} + +.footnote:target { + background-color: #ffa; +} + +.line-block { + display: block; + margin-top: 1em; + margin-bottom: 1em; +} + +.line-block .line-block { + margin-top: 0; + margin-bottom: 0; + margin-left: 1.5em; +} + +.guilabel, .menuselection { + font-family: sans-serif; +} + +.accelerator { + text-decoration: underline; +} + +.classifier { + font-style: oblique; +} + +.classifier:before { + font-style: normal; + margin: 0 0.5em; + content: ":"; + display: inline-block; +} + +abbr, acronym { + border-bottom: dotted 1px; + cursor: help; +} + +.translated { + background-color: rgba(207, 255, 207, 0.2) +} + +.untranslated { + background-color: rgba(255, 207, 207, 0.2) +} + +/* -- code displays --------------------------------------------------------- */ + +pre { + overflow: auto; + overflow-y: hidden; /* fixes display issues on Chrome browsers */ +} + +pre, div[class*="highlight-"] { + clear: both; +} + +span.pre { + -moz-hyphens: none; + -ms-hyphens: none; + -webkit-hyphens: none; + hyphens: none; + white-space: nowrap; +} + +div[class*="highlight-"] { + margin: 1em 0; +} + +td.linenos pre { + border: 0; + background-color: transparent; + color: #aaa; +} + +table.highlighttable { + display: block; +} + +table.highlighttable tbody { + display: block; +} + +table.highlighttable tr { + display: flex; +} + +table.highlighttable td { + margin: 0; + padding: 0; +} + +table.highlighttable td.linenos { + padding-right: 0.5em; +} + +table.highlighttable td.code { + flex: 1; + overflow: hidden; +} + +.highlight .hll { + display: block; +} + +div.highlight pre, +table.highlighttable pre { + margin: 0; +} + +div.code-block-caption + div { + margin-top: 0; +} + +div.code-block-caption { + margin-top: 1em; + padding: 2px 5px; + font-size: small; +} + +div.code-block-caption code { + background-color: transparent; +} + +table.highlighttable td.linenos, +span.linenos, +div.highlight span.gp { /* gp: Generic.Prompt */ + user-select: none; + -webkit-user-select: text; /* Safari fallback only */ + -webkit-user-select: none; /* Chrome/Safari */ + -moz-user-select: none; /* Firefox */ + -ms-user-select: none; /* IE10+ */ +} + +div.code-block-caption span.caption-number { + padding: 0.1em 0.3em; + font-style: italic; +} + +div.code-block-caption span.caption-text { +} + +div.literal-block-wrapper { + margin: 1em 0; +} + +code.xref, a code { + background-color: transparent; + font-weight: bold; +} + +h1 code, h2 code, h3 code, h4 code, h5 code, h6 code { + background-color: transparent; +} + +.viewcode-link { + float: right; +} + +.viewcode-back { + float: right; + font-family: sans-serif; +} + +div.viewcode-block:target { + margin: -1px -10px; + padding: 0 10px; +} + +/* -- math display ---------------------------------------------------------- */ + +img.math { + vertical-align: middle; +} + +div.body div.math p { + text-align: center; +} + +span.eqno { + float: right; +} + +span.eqno a.headerlink { + position: absolute; + z-index: 1; +} + +div.math:hover a.headerlink { + visibility: visible; +} + +/* -- printout stylesheet --------------------------------------------------- */ + +@media print { + div.document, + div.documentwrapper, + div.bodywrapper { + margin: 0 !important; + width: 100%; + } + + div.sphinxsidebar, + div.related, + div.footer, + #top-link { + display: none; + } +} \ No newline at end of file diff --git a/_static/check-solid.svg b/_static/check-solid.svg new file mode 100644 index 0000000..92fad4b --- /dev/null +++ b/_static/check-solid.svg @@ -0,0 +1,4 @@ + + + + diff --git a/_static/clipboard.min.js b/_static/clipboard.min.js new file mode 100644 index 0000000..54b3c46 --- /dev/null +++ b/_static/clipboard.min.js @@ -0,0 +1,7 @@ +/*! + * clipboard.js v2.0.8 + * https://clipboardjs.com/ + * + * Licensed MIT © Zeno Rocha + */ +!function(t,e){"object"==typeof exports&&"object"==typeof module?module.exports=e():"function"==typeof define&&define.amd?define([],e):"object"==typeof exports?exports.ClipboardJS=e():t.ClipboardJS=e()}(this,function(){return n={686:function(t,e,n){"use strict";n.d(e,{default:function(){return o}});var e=n(279),i=n.n(e),e=n(370),u=n.n(e),e=n(817),c=n.n(e);function a(t){try{return document.execCommand(t)}catch(t){return}}var f=function(t){t=c()(t);return a("cut"),t};var l=function(t){var e,n,o,r=1 + + + + diff --git a/_static/copybutton.css b/_static/copybutton.css new file mode 100644 index 0000000..f1916ec --- /dev/null +++ b/_static/copybutton.css @@ -0,0 +1,94 @@ +/* Copy buttons */ +button.copybtn { + position: absolute; + display: flex; + top: .3em; + right: .3em; + width: 1.7em; + height: 1.7em; + opacity: 0; + transition: opacity 0.3s, border .3s, background-color .3s; + user-select: none; + padding: 0; + border: none; + outline: none; + border-radius: 0.4em; + /* The colors that GitHub uses */ + border: #1b1f2426 1px solid; + background-color: #f6f8fa; + color: #57606a; +} + +button.copybtn.success { + border-color: #22863a; + color: #22863a; +} + +button.copybtn svg { + stroke: currentColor; + width: 1.5em; + height: 1.5em; + padding: 0.1em; +} + +div.highlight { + position: relative; +} + +/* Show the copybutton */ +.highlight:hover button.copybtn, button.copybtn.success { + opacity: 1; +} + +.highlight button.copybtn:hover { + background-color: rgb(235, 235, 235); +} + +.highlight button.copybtn:active { + background-color: rgb(187, 187, 187); +} + +/** + * A minimal CSS-only tooltip copied from: + * https://codepen.io/mildrenben/pen/rVBrpK + * + * To use, write HTML like the following: + * + *

Short

+ */ + .o-tooltip--left { + position: relative; + } + + .o-tooltip--left:after { + opacity: 0; + visibility: hidden; + position: absolute; + content: attr(data-tooltip); + padding: .2em; + font-size: .8em; + left: -.2em; + background: grey; + color: white; + white-space: nowrap; + z-index: 2; + border-radius: 2px; + transform: translateX(-102%) translateY(0); + transition: opacity 0.2s cubic-bezier(0.64, 0.09, 0.08, 1), transform 0.2s cubic-bezier(0.64, 0.09, 0.08, 1); +} + +.o-tooltip--left:hover:after { + display: block; + opacity: 1; + visibility: visible; + transform: translateX(-100%) translateY(0); + transition: opacity 0.2s cubic-bezier(0.64, 0.09, 0.08, 1), transform 0.2s cubic-bezier(0.64, 0.09, 0.08, 1); + transition-delay: .5s; +} + +/* By default the copy button shouldn't show up when printing a page */ +@media print { + button.copybtn { + display: none; + } +} diff --git a/_static/copybutton.js b/_static/copybutton.js new file mode 100644 index 0000000..2ea7ff3 --- /dev/null +++ b/_static/copybutton.js @@ -0,0 +1,248 @@ +// Localization support +const messages = { + 'en': { + 'copy': 'Copy', + 'copy_to_clipboard': 'Copy to clipboard', + 'copy_success': 'Copied!', + 'copy_failure': 'Failed to copy', + }, + 'es' : { + 'copy': 'Copiar', + 'copy_to_clipboard': 'Copiar al portapapeles', + 'copy_success': '¡Copiado!', + 'copy_failure': 'Error al copiar', + }, + 'de' : { + 'copy': 'Kopieren', + 'copy_to_clipboard': 'In die Zwischenablage kopieren', + 'copy_success': 'Kopiert!', + 'copy_failure': 'Fehler beim Kopieren', + }, + 'fr' : { + 'copy': 'Copier', + 'copy_to_clipboard': 'Copier dans le presse-papier', + 'copy_success': 'Copié !', + 'copy_failure': 'Échec de la copie', + }, + 'ru': { + 'copy': 'Скопировать', + 'copy_to_clipboard': 'Скопировать в буфер', + 'copy_success': 'Скопировано!', + 'copy_failure': 'Не удалось скопировать', + }, + 'zh-CN': { + 'copy': '复制', + 'copy_to_clipboard': '复制到剪贴板', + 'copy_success': '复制成功!', + 'copy_failure': '复制失败', + }, + 'it' : { + 'copy': 'Copiare', + 'copy_to_clipboard': 'Copiato negli appunti', + 'copy_success': 'Copiato!', + 'copy_failure': 'Errore durante la copia', + } +} + +let locale = 'en' +if( document.documentElement.lang !== undefined + && messages[document.documentElement.lang] !== undefined ) { + locale = document.documentElement.lang +} + +let doc_url_root = DOCUMENTATION_OPTIONS.URL_ROOT; +if (doc_url_root == '#') { + doc_url_root = ''; +} + +/** + * SVG files for our copy buttons + */ +let iconCheck = ` + ${messages[locale]['copy_success']} + + +` + +// If the user specified their own SVG use that, otherwise use the default +let iconCopy = ``; +if (!iconCopy) { + iconCopy = ` + ${messages[locale]['copy_to_clipboard']} + + + +` +} + +/** + * Set up copy/paste for code blocks + */ + +const runWhenDOMLoaded = cb => { + if (document.readyState != 'loading') { + cb() + } else if (document.addEventListener) { + document.addEventListener('DOMContentLoaded', cb) + } else { + document.attachEvent('onreadystatechange', function() { + if (document.readyState == 'complete') cb() + }) + } +} + +const codeCellId = index => `codecell${index}` + +// Clears selected text since ClipboardJS will select the text when copying +const clearSelection = () => { + if (window.getSelection) { + window.getSelection().removeAllRanges() + } else if (document.selection) { + document.selection.empty() + } +} + +// Changes tooltip text for a moment, then changes it back +// We want the timeout of our `success` class to be a bit shorter than the +// tooltip and icon change, so that we can hide the icon before changing back. +var timeoutIcon = 2000; +var timeoutSuccessClass = 1500; + +const temporarilyChangeTooltip = (el, oldText, newText) => { + el.setAttribute('data-tooltip', newText) + el.classList.add('success') + // Remove success a little bit sooner than we change the tooltip + // So that we can use CSS to hide the copybutton first + setTimeout(() => el.classList.remove('success'), timeoutSuccessClass) + setTimeout(() => el.setAttribute('data-tooltip', oldText), timeoutIcon) +} + +// Changes the copy button icon for two seconds, then changes it back +const temporarilyChangeIcon = (el) => { + el.innerHTML = iconCheck; + setTimeout(() => {el.innerHTML = iconCopy}, timeoutIcon) +} + +const addCopyButtonToCodeCells = () => { + // If ClipboardJS hasn't loaded, wait a bit and try again. This + // happens because we load ClipboardJS asynchronously. + if (window.ClipboardJS === undefined) { + setTimeout(addCopyButtonToCodeCells, 250) + return + } + + // Add copybuttons to all of our code cells + const COPYBUTTON_SELECTOR = 'div.highlight pre'; + const codeCells = document.querySelectorAll(COPYBUTTON_SELECTOR) + codeCells.forEach((codeCell, index) => { + const id = codeCellId(index) + codeCell.setAttribute('id', id) + + const clipboardButton = id => + `` + codeCell.insertAdjacentHTML('afterend', clipboardButton(id)) + }) + +function escapeRegExp(string) { + return string.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'); // $& means the whole matched string +} + +/** + * Removes excluded text from a Node. + * + * @param {Node} target Node to filter. + * @param {string} exclude CSS selector of nodes to exclude. + * @returns {DOMString} Text from `target` with text removed. + */ +function filterText(target, exclude) { + const clone = target.cloneNode(true); // clone as to not modify the live DOM + if (exclude) { + // remove excluded nodes + clone.querySelectorAll(exclude).forEach(node => node.remove()); + } + return clone.innerText; +} + +// Callback when a copy button is clicked. Will be passed the node that was clicked +// should then grab the text and replace pieces of text that shouldn't be used in output +function formatCopyText(textContent, copybuttonPromptText, isRegexp = false, onlyCopyPromptLines = true, removePrompts = true, copyEmptyLines = true, lineContinuationChar = "", hereDocDelim = "") { + var regexp; + var match; + + // Do we check for line continuation characters and "HERE-documents"? + var useLineCont = !!lineContinuationChar + var useHereDoc = !!hereDocDelim + + // create regexp to capture prompt and remaining line + if (isRegexp) { + regexp = new RegExp('^(' + copybuttonPromptText + ')(.*)') + } else { + regexp = new RegExp('^(' + escapeRegExp(copybuttonPromptText) + ')(.*)') + } + + const outputLines = []; + var promptFound = false; + var gotLineCont = false; + var gotHereDoc = false; + const lineGotPrompt = []; + for (const line of textContent.split('\n')) { + match = line.match(regexp) + if (match || gotLineCont || gotHereDoc) { + promptFound = regexp.test(line) + lineGotPrompt.push(promptFound) + if (removePrompts && promptFound) { + outputLines.push(match[2]) + } else { + outputLines.push(line) + } + gotLineCont = line.endsWith(lineContinuationChar) & useLineCont + if (line.includes(hereDocDelim) & useHereDoc) + gotHereDoc = !gotHereDoc + } else if (!onlyCopyPromptLines) { + outputLines.push(line) + } else if (copyEmptyLines && line.trim() === '') { + outputLines.push(line) + } + } + + // If no lines with the prompt were found then just use original lines + if (lineGotPrompt.some(v => v === true)) { + textContent = outputLines.join('\n'); + } + + // Remove a trailing newline to avoid auto-running when pasting + if (textContent.endsWith("\n")) { + textContent = textContent.slice(0, -1) + } + return textContent +} + + +var copyTargetText = (trigger) => { + var target = document.querySelector(trigger.attributes['data-clipboard-target'].value); + + // get filtered text + let exclude = '.linenos'; + + let text = filterText(target, exclude); + return formatCopyText(text, '', false, true, true, true, '', '') +} + + // Initialize with a callback so we can modify the text before copy + const clipboard = new ClipboardJS('.copybtn', {text: copyTargetText}) + + // Update UI with error/success messages + clipboard.on('success', event => { + clearSelection() + temporarilyChangeTooltip(event.trigger, messages[locale]['copy'], messages[locale]['copy_success']) + temporarilyChangeIcon(event.trigger) + }) + + clipboard.on('error', event => { + temporarilyChangeTooltip(event.trigger, messages[locale]['copy'], messages[locale]['copy_failure']) + }) +} + +runWhenDOMLoaded(addCopyButtonToCodeCells) \ No newline at end of file diff --git a/_static/copybutton_funcs.js b/_static/copybutton_funcs.js new file mode 100644 index 0000000..dbe1aaa --- /dev/null +++ b/_static/copybutton_funcs.js @@ -0,0 +1,73 @@ +function escapeRegExp(string) { + return string.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'); // $& means the whole matched string +} + +/** + * Removes excluded text from a Node. + * + * @param {Node} target Node to filter. + * @param {string} exclude CSS selector of nodes to exclude. + * @returns {DOMString} Text from `target` with text removed. + */ +export function filterText(target, exclude) { + const clone = target.cloneNode(true); // clone as to not modify the live DOM + if (exclude) { + // remove excluded nodes + clone.querySelectorAll(exclude).forEach(node => node.remove()); + } + return clone.innerText; +} + +// Callback when a copy button is clicked. Will be passed the node that was clicked +// should then grab the text and replace pieces of text that shouldn't be used in output +export function formatCopyText(textContent, copybuttonPromptText, isRegexp = false, onlyCopyPromptLines = true, removePrompts = true, copyEmptyLines = true, lineContinuationChar = "", hereDocDelim = "") { + var regexp; + var match; + + // Do we check for line continuation characters and "HERE-documents"? + var useLineCont = !!lineContinuationChar + var useHereDoc = !!hereDocDelim + + // create regexp to capture prompt and remaining line + if (isRegexp) { + regexp = new RegExp('^(' + copybuttonPromptText + ')(.*)') + } else { + regexp = new RegExp('^(' + escapeRegExp(copybuttonPromptText) + ')(.*)') + } + + const outputLines = []; + var promptFound = false; + var gotLineCont = false; + var gotHereDoc = false; + const lineGotPrompt = []; + for (const line of textContent.split('\n')) { + match = line.match(regexp) + if (match || gotLineCont || gotHereDoc) { + promptFound = regexp.test(line) + lineGotPrompt.push(promptFound) + if (removePrompts && promptFound) { + outputLines.push(match[2]) + } else { + outputLines.push(line) + } + gotLineCont = line.endsWith(lineContinuationChar) & useLineCont + if (line.includes(hereDocDelim) & useHereDoc) + gotHereDoc = !gotHereDoc + } else if (!onlyCopyPromptLines) { + outputLines.push(line) + } else if (copyEmptyLines && line.trim() === '') { + outputLines.push(line) + } + } + + // If no lines with the prompt were found then just use original lines + if (lineGotPrompt.some(v => v === true)) { + textContent = outputLines.join('\n'); + } + + // Remove a trailing newline to avoid auto-running when pasting + if (textContent.endsWith("\n")) { + textContent = textContent.slice(0, -1) + } + return textContent +} diff --git a/_static/css/badge_only.css b/_static/css/badge_only.css new file mode 100644 index 0000000..c718cee --- /dev/null +++ b/_static/css/badge_only.css @@ -0,0 +1 @@ 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+ return this; // for chaining... + } +})(jQuery); + +// NO good way to do this!. Copy a hack from here +// https://stackoverflow.com/questions/901115/how-can-i-get-query-string-values-in-javascript +// https://stackoverflow.com/a/2880929 +var urlParams; +(window.onpopstate = function () { + var match, + pl = /\+/g, // Regex for replacing addition symbol with a space + search = /([^&=]+)=?([^&]*)/g, + decode = function (s) { return decodeURIComponent(s.replace(pl, " ")); }, + query = window.location.search.substring(1); + urlParams = {}; + while (match = search.exec(query)) + urlParams[decode(match[1])] = decode(match[2]); +})(); + +// Select heading levels +var maxHeading = urlParams['h'] +if (maxHeading === undefined) maxHeading = 2 +var headingLevels = []; +for (h=2 ; h (sections.length-1) ) { + // if we would scroll past bottom, or above top, do nothing + return; + } + + console.log('xxxxxx'); + var targetSection = sections[targetPos]; + console.log(targetSection, typeof(targetSection)); + + // Return targetSection top and height + var secProperties = section_top_and_height(targetSection); 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background-color: #E75C58 +} + +div.highlight .-Color[class*=-BGGreen] { + background-color: #00A250 +} + +div.highlight .-Color[class*=-BGYellow] { + background-color: #DDB62B +} + +div.highlight .-Color[class*=-BGBlue] { + background-color: #208FFB +} + +div.highlight .-Color[class*=-BGMagenta] { + background-color: #D160C4 +} + +div.highlight .-Color[class*=-BGCyan] { + background-color: #60C6C8 +} + +div.highlight .-Color[class*=-BGWhite] { + background-color: #C5C1B4 +} + +/* Font colors for 8-bit ANSI */ + +div.highlight .-Color[class*=-C0] { + color: #000000 +} + +div.highlight .-Color[class*=-BGC0] { + background-color: #000000 +} + +div.highlight .-Color[class*=-C1] { + color: #800000 +} + +div.highlight .-Color[class*=-BGC1] { + background-color: #800000 +} + +div.highlight .-Color[class*=-C2] { + color: #008000 +} + +div.highlight .-Color[class*=-BGC2] { + background-color: #008000 +} + +div.highlight .-Color[class*=-C3] { + color: #808000 +} + +div.highlight .-Color[class*=-BGC3] { + background-color: #808000 +} + +div.highlight .-Color[class*=-C4] { + color: #000080 +} + +div.highlight .-Color[class*=-BGC4] { + background-color: #000080 +} + +div.highlight .-Color[class*=-C5] { + color: #800080 +} + +div.highlight .-Color[class*=-BGC5] { + background-color: #800080 +} + +div.highlight .-Color[class*=-C6] { + color: #008080 +} + +div.highlight .-Color[class*=-BGC6] { + background-color: #008080 +} + +div.highlight .-Color[class*=-C7] { + color: #C0C0C0 +} + +div.highlight .-Color[class*=-BGC7] { + background-color: #C0C0C0 +} + +div.highlight .-Color[class*=-C8] { + color: #808080 +} + +div.highlight .-Color[class*=-BGC8] { + background-color: #808080 +} + +div.highlight .-Color[class*=-C9] { + color: #FF0000 +} + +div.highlight .-Color[class*=-BGC9] { + background-color: #FF0000 +} + +div.highlight .-Color[class*=-C10] { + color: #00FF00 +} + +div.highlight .-Color[class*=-BGC10] { + background-color: #00FF00 +} + +div.highlight .-Color[class*=-C11] { + color: #FFFF00 +} + +div.highlight .-Color[class*=-BGC11] { + background-color: #FFFF00 +} + +div.highlight .-Color[class*=-C12] { + color: #0000FF +} + +div.highlight .-Color[class*=-BGC12] { + background-color: #0000FF +} + +div.highlight .-Color[class*=-C13] { + color: #FF00FF +} + +div.highlight .-Color[class*=-BGC13] { + background-color: #FF00FF +} + +div.highlight .-Color[class*=-C14] { + color: #00FFFF +} + +div.highlight .-Color[class*=-BGC14] { + background-color: #00FFFF +} + +div.highlight .-Color[class*=-C15] { + color: #FFFFFF +} + +div.highlight .-Color[class*=-BGC15] { + background-color: #FFFFFF +} + +div.highlight .-Color[class*=-C16] { + color: #000000 +} + +div.highlight .-Color[class*=-BGC16] { + background-color: #000000 +} + +div.highlight .-Color[class*=-C17] { + color: #00005F +} + +div.highlight .-Color[class*=-BGC17] { + background-color: #00005F +} + +div.highlight .-Color[class*=-C18] { + color: #000087 +} + +div.highlight .-Color[class*=-BGC18] { + background-color: #000087 +} + +div.highlight .-Color[class*=-C19] { + color: #0000AF +} + +div.highlight .-Color[class*=-BGC19] { + background-color: #0000AF +} + +div.highlight .-Color[class*=-C20] { + color: #0000D7 +} + +div.highlight .-Color[class*=-BGC20] { + background-color: #0000D7 +} + +div.highlight .-Color[class*=-C21] { + color: #0000FF +} + +div.highlight .-Color[class*=-BGC21] { + background-color: #0000FF +} + +div.highlight .-Color[class*=-C22] { + color: #005F00 +} + +div.highlight .-Color[class*=-BGC22] { + background-color: #005F00 +} + +div.highlight .-Color[class*=-C23] { + color: #005F5F +} + +div.highlight .-Color[class*=-BGC23] { + background-color: #005F5F +} + +div.highlight .-Color[class*=-C24] { + color: #005F87 +} + +div.highlight .-Color[class*=-BGC24] { + background-color: #005F87 +} + +div.highlight .-Color[class*=-C25] { + color: #005FAF +} + +div.highlight .-Color[class*=-BGC25] { + background-color: #005FAF +} + +div.highlight .-Color[class*=-C26] { + color: #005FD7 +} + +div.highlight .-Color[class*=-BGC26] { + background-color: #005FD7 +} + +div.highlight .-Color[class*=-C27] { + color: #005FFF +} + +div.highlight .-Color[class*=-BGC27] { + background-color: #005FFF +} + +div.highlight .-Color[class*=-C28] { + color: #008700 +} + +div.highlight .-Color[class*=-BGC28] { + background-color: #008700 +} + +div.highlight .-Color[class*=-C29] { + color: #00875F +} + +div.highlight .-Color[class*=-BGC29] { + background-color: #00875F +} + +div.highlight .-Color[class*=-C30] { + color: #008787 +} + +div.highlight .-Color[class*=-BGC30] { + background-color: #008787 +} + +div.highlight .-Color[class*=-C31] { + color: #0087AF +} + +div.highlight .-Color[class*=-BGC31] { + background-color: #0087AF +} + +div.highlight .-Color[class*=-C32] { + color: #0087D7 +} + +div.highlight .-Color[class*=-BGC32] { + background-color: #0087D7 +} + +div.highlight .-Color[class*=-C33] { + color: #0087FF +} + +div.highlight .-Color[class*=-BGC33] { + background-color: #0087FF +} + +div.highlight .-Color[class*=-C34] { + color: #00AF00 +} + +div.highlight .-Color[class*=-BGC34] { + background-color: #00AF00 +} + +div.highlight .-Color[class*=-C35] { + color: #00AF5F +} + +div.highlight .-Color[class*=-BGC35] { + background-color: #00AF5F +} + +div.highlight .-Color[class*=-C36] { + color: #00AF87 +} + +div.highlight .-Color[class*=-BGC36] { + background-color: #00AF87 +} + +div.highlight .-Color[class*=-C37] { + color: #00AFAF +} + +div.highlight .-Color[class*=-BGC37] { + background-color: #00AFAF +} + +div.highlight .-Color[class*=-C38] { + color: #00AFD7 +} + +div.highlight .-Color[class*=-BGC38] { + background-color: #00AFD7 +} + +div.highlight .-Color[class*=-C39] { + color: #00AFFF +} + +div.highlight .-Color[class*=-BGC39] { + background-color: #00AFFF +} + +div.highlight .-Color[class*=-C40] { + color: #00D700 +} + +div.highlight .-Color[class*=-BGC40] { + background-color: #00D700 +} + +div.highlight .-Color[class*=-C41] { + color: #00D75F +} + +div.highlight .-Color[class*=-BGC41] { + background-color: #00D75F +} + +div.highlight .-Color[class*=-C42] { + color: #00D787 +} + +div.highlight .-Color[class*=-BGC42] { + background-color: #00D787 +} + +div.highlight .-Color[class*=-C43] { + color: #00D7AF +} + +div.highlight .-Color[class*=-BGC43] { + background-color: #00D7AF +} + +div.highlight .-Color[class*=-C44] { + color: #00D7D7 +} + +div.highlight .-Color[class*=-BGC44] { + background-color: #00D7D7 +} + +div.highlight .-Color[class*=-C45] { + color: #00D7FF +} + +div.highlight .-Color[class*=-BGC45] { + background-color: #00D7FF +} + +div.highlight .-Color[class*=-C46] { + color: #00FF00 +} + +div.highlight .-Color[class*=-BGC46] { + background-color: #00FF00 +} + +div.highlight .-Color[class*=-C47] { + color: #00FF5F +} + +div.highlight .-Color[class*=-BGC47] { + background-color: #00FF5F +} + +div.highlight .-Color[class*=-C48] { + color: #00FF87 +} + +div.highlight .-Color[class*=-BGC48] { + background-color: #00FF87 +} + +div.highlight .-Color[class*=-C49] { + color: #00FFAF +} + +div.highlight .-Color[class*=-BGC49] { + background-color: #00FFAF +} + +div.highlight .-Color[class*=-C50] { + color: #00FFD7 +} + +div.highlight .-Color[class*=-BGC50] { + background-color: #00FFD7 +} + +div.highlight .-Color[class*=-C51] { + color: #00FFFF +} + +div.highlight .-Color[class*=-BGC51] { + background-color: #00FFFF +} + +div.highlight .-Color[class*=-C52] { + color: #5F0000 +} + +div.highlight .-Color[class*=-BGC52] { + background-color: #5F0000 +} + +div.highlight .-Color[class*=-C53] { + color: #5F005F +} + +div.highlight .-Color[class*=-BGC53] { + background-color: #5F005F +} + +div.highlight .-Color[class*=-C54] { + color: #5F0087 +} + +div.highlight .-Color[class*=-BGC54] { + background-color: #5F0087 +} + +div.highlight .-Color[class*=-C55] { + color: #5F00AF +} + +div.highlight .-Color[class*=-BGC55] { + background-color: #5F00AF +} + +div.highlight .-Color[class*=-C56] { + color: #5F00D7 +} + +div.highlight .-Color[class*=-BGC56] { + background-color: #5F00D7 +} + +div.highlight .-Color[class*=-C57] { + color: #5F00FF +} + +div.highlight .-Color[class*=-BGC57] { + background-color: #5F00FF +} + +div.highlight .-Color[class*=-C58] { + color: #5F5F00 +} + +div.highlight .-Color[class*=-BGC58] { + background-color: #5F5F00 +} + +div.highlight .-Color[class*=-C59] { + color: #5F5F5F +} + +div.highlight .-Color[class*=-BGC59] { + background-color: #5F5F5F +} + +div.highlight .-Color[class*=-C60] { + color: #5F5F87 +} + +div.highlight .-Color[class*=-BGC60] { + background-color: #5F5F87 +} + +div.highlight .-Color[class*=-C61] { + color: #5F5FAF +} + +div.highlight .-Color[class*=-BGC61] { + background-color: #5F5FAF +} + +div.highlight .-Color[class*=-C62] { + color: #5F5FD7 +} + +div.highlight .-Color[class*=-BGC62] { + background-color: #5F5FD7 +} + +div.highlight .-Color[class*=-C63] { + color: #5F5FFF +} + +div.highlight .-Color[class*=-BGC63] { + background-color: #5F5FFF +} + +div.highlight .-Color[class*=-C64] { + color: #5F8700 +} + +div.highlight .-Color[class*=-BGC64] { + background-color: #5F8700 +} + +div.highlight .-Color[class*=-C65] { + color: #5F875F +} + +div.highlight .-Color[class*=-BGC65] { + background-color: #5F875F +} + +div.highlight .-Color[class*=-C66] { + color: #5F8787 +} + +div.highlight .-Color[class*=-BGC66] { + background-color: #5F8787 +} + +div.highlight .-Color[class*=-C67] { + color: #5F87AF +} + +div.highlight .-Color[class*=-BGC67] { + background-color: #5F87AF +} + +div.highlight .-Color[class*=-C68] { + color: #5F87D7 +} + +div.highlight .-Color[class*=-BGC68] { + background-color: #5F87D7 +} + +div.highlight .-Color[class*=-C69] { + color: #5F87FF +} + +div.highlight .-Color[class*=-BGC69] { + background-color: #5F87FF +} + +div.highlight .-Color[class*=-C70] { + color: #5FAF00 +} + +div.highlight .-Color[class*=-BGC70] { + background-color: #5FAF00 +} + +div.highlight .-Color[class*=-C71] { + color: #5FAF5F +} + +div.highlight .-Color[class*=-BGC71] { + background-color: #5FAF5F +} + +div.highlight .-Color[class*=-C72] { + color: #5FAF87 +} + +div.highlight .-Color[class*=-BGC72] { + background-color: #5FAF87 +} + +div.highlight .-Color[class*=-C73] { + color: #5FAFAF +} + +div.highlight .-Color[class*=-BGC73] { + background-color: #5FAFAF +} + +div.highlight .-Color[class*=-C74] { + color: #5FAFD7 +} + +div.highlight .-Color[class*=-BGC74] { + background-color: #5FAFD7 +} + +div.highlight .-Color[class*=-C75] { + color: #5FAFFF +} + +div.highlight .-Color[class*=-BGC75] { + background-color: #5FAFFF +} + +div.highlight .-Color[class*=-C76] { + color: #5FD700 +} + +div.highlight .-Color[class*=-BGC76] { + background-color: #5FD700 +} + +div.highlight .-Color[class*=-C77] { + color: #5FD75F +} + +div.highlight .-Color[class*=-BGC77] { + background-color: #5FD75F +} + +div.highlight .-Color[class*=-C78] { + color: #5FD787 +} + +div.highlight .-Color[class*=-BGC78] { + background-color: #5FD787 +} + +div.highlight .-Color[class*=-C79] { + color: #5FD7AF +} + +div.highlight .-Color[class*=-BGC79] { + background-color: #5FD7AF +} + +div.highlight .-Color[class*=-C80] { + color: #5FD7D7 +} + +div.highlight .-Color[class*=-BGC80] { + background-color: #5FD7D7 +} + +div.highlight .-Color[class*=-C81] { + color: #5FD7FF +} + +div.highlight .-Color[class*=-BGC81] { + background-color: #5FD7FF +} + +div.highlight .-Color[class*=-C82] { + color: #5FFF00 +} + +div.highlight .-Color[class*=-BGC82] { + background-color: #5FFF00 +} + +div.highlight .-Color[class*=-C83] { + color: #5FFF5F +} + +div.highlight .-Color[class*=-BGC83] { + background-color: #5FFF5F +} + +div.highlight .-Color[class*=-C84] { + color: #5FFF87 +} + +div.highlight .-Color[class*=-BGC84] { + background-color: #5FFF87 +} + +div.highlight .-Color[class*=-C85] { + color: #5FFFAF +} + +div.highlight .-Color[class*=-BGC85] { + background-color: #5FFFAF +} + +div.highlight .-Color[class*=-C86] { + color: #5FFFD7 +} + +div.highlight .-Color[class*=-BGC86] { + background-color: #5FFFD7 +} + +div.highlight .-Color[class*=-C87] { + color: #5FFFFF +} + +div.highlight .-Color[class*=-BGC87] { + background-color: #5FFFFF +} + +div.highlight .-Color[class*=-C88] { + color: #870000 +} + +div.highlight .-Color[class*=-BGC88] { + background-color: #870000 +} + +div.highlight .-Color[class*=-C89] { + color: #87005F +} + +div.highlight .-Color[class*=-BGC89] { + background-color: #87005F +} + +div.highlight .-Color[class*=-C90] { + color: #870087 +} + +div.highlight .-Color[class*=-BGC90] { + background-color: #870087 +} + +div.highlight .-Color[class*=-C91] { + color: #8700AF +} + +div.highlight .-Color[class*=-BGC91] { + background-color: #8700AF +} + +div.highlight .-Color[class*=-C92] { + color: #8700D7 +} + +div.highlight .-Color[class*=-BGC92] { + background-color: #8700D7 +} + +div.highlight .-Color[class*=-C93] { + color: #8700FF +} + +div.highlight .-Color[class*=-BGC93] { + background-color: #8700FF +} + +div.highlight .-Color[class*=-C94] { + color: #875F00 +} + +div.highlight .-Color[class*=-BGC94] { + background-color: #875F00 +} + +div.highlight .-Color[class*=-C95] { + color: #875F5F +} + +div.highlight .-Color[class*=-BGC95] { + background-color: #875F5F +} + +div.highlight .-Color[class*=-C96] { + color: #875F87 +} + +div.highlight .-Color[class*=-BGC96] { + background-color: #875F87 +} + +div.highlight .-Color[class*=-C97] { + color: #875FAF +} + +div.highlight .-Color[class*=-BGC97] { + background-color: #875FAF +} + +div.highlight .-Color[class*=-C98] { + color: #875FD7 +} + +div.highlight .-Color[class*=-BGC98] { + background-color: #875FD7 +} + +div.highlight .-Color[class*=-C99] { + color: #875FFF +} + +div.highlight .-Color[class*=-BGC99] { + background-color: #875FFF +} + +div.highlight .-Color[class*=-C100] { + color: #878700 +} + +div.highlight .-Color[class*=-BGC100] { + background-color: #878700 +} + +div.highlight .-Color[class*=-C101] { + color: #87875F +} + +div.highlight .-Color[class*=-BGC101] { + background-color: #87875F +} + +div.highlight .-Color[class*=-C102] { + color: #878787 +} + +div.highlight .-Color[class*=-BGC102] { + background-color: #878787 +} + +div.highlight .-Color[class*=-C103] { + color: #8787AF +} + +div.highlight .-Color[class*=-BGC103] { + background-color: #8787AF +} + +div.highlight .-Color[class*=-C104] { + color: #8787D7 +} + +div.highlight .-Color[class*=-BGC104] { + background-color: #8787D7 +} + +div.highlight .-Color[class*=-C105] { + color: #8787FF +} + +div.highlight .-Color[class*=-BGC105] { + background-color: #8787FF +} + +div.highlight .-Color[class*=-C106] { + color: #87AF00 +} + +div.highlight .-Color[class*=-BGC106] { + background-color: #87AF00 +} + +div.highlight .-Color[class*=-C107] { + color: #87AF5F +} + +div.highlight .-Color[class*=-BGC107] { + background-color: #87AF5F +} + +div.highlight .-Color[class*=-C108] { + color: #87AF87 +} + +div.highlight .-Color[class*=-BGC108] { + background-color: #87AF87 +} + +div.highlight .-Color[class*=-C109] { + color: #87AFAF +} + +div.highlight .-Color[class*=-BGC109] { + background-color: #87AFAF +} + +div.highlight .-Color[class*=-C110] { + color: #87AFD7 +} + +div.highlight .-Color[class*=-BGC110] { + background-color: #87AFD7 +} + +div.highlight .-Color[class*=-C111] { + color: #87AFFF +} + +div.highlight .-Color[class*=-BGC111] { + background-color: #87AFFF +} + +div.highlight .-Color[class*=-C112] { + color: #87D700 +} + +div.highlight .-Color[class*=-BGC112] { + background-color: #87D700 +} + +div.highlight .-Color[class*=-C113] { + color: #87D75F +} + +div.highlight .-Color[class*=-BGC113] { + background-color: #87D75F +} + +div.highlight .-Color[class*=-C114] { + color: #87D787 +} + +div.highlight .-Color[class*=-BGC114] { + background-color: #87D787 +} + +div.highlight .-Color[class*=-C115] { + color: #87D7AF +} + +div.highlight .-Color[class*=-BGC115] { + background-color: #87D7AF +} + +div.highlight .-Color[class*=-C116] { + color: #87D7D7 +} + +div.highlight .-Color[class*=-BGC116] { + background-color: #87D7D7 +} + +div.highlight .-Color[class*=-C117] { + color: #87D7FF +} + +div.highlight .-Color[class*=-BGC117] { + background-color: #87D7FF +} + +div.highlight .-Color[class*=-C118] { + color: #87FF00 +} + +div.highlight .-Color[class*=-BGC118] { + background-color: #87FF00 +} + +div.highlight .-Color[class*=-C119] { + color: #87FF5F +} + +div.highlight .-Color[class*=-BGC119] { + background-color: #87FF5F +} + +div.highlight .-Color[class*=-C120] { + color: #87FF87 +} + +div.highlight .-Color[class*=-BGC120] { + background-color: #87FF87 +} + +div.highlight .-Color[class*=-C121] { + color: #87FFAF +} + +div.highlight .-Color[class*=-BGC121] { + background-color: #87FFAF +} + +div.highlight .-Color[class*=-C122] { + color: #87FFD7 +} + +div.highlight .-Color[class*=-BGC122] { + background-color: #87FFD7 +} + +div.highlight .-Color[class*=-C123] { + color: #87FFFF +} + +div.highlight .-Color[class*=-BGC123] { + background-color: #87FFFF +} + +div.highlight .-Color[class*=-C124] { + color: #AF0000 +} + +div.highlight .-Color[class*=-BGC124] { + background-color: #AF0000 +} + +div.highlight .-Color[class*=-C125] { + color: #AF005F +} + +div.highlight .-Color[class*=-BGC125] { + background-color: #AF005F +} + +div.highlight .-Color[class*=-C126] { + color: #AF0087 +} + +div.highlight .-Color[class*=-BGC126] { + background-color: #AF0087 +} + +div.highlight .-Color[class*=-C127] { + color: #AF00AF +} + +div.highlight .-Color[class*=-BGC127] { + background-color: #AF00AF +} + +div.highlight .-Color[class*=-C128] { + color: #AF00D7 +} + +div.highlight .-Color[class*=-BGC128] { + background-color: #AF00D7 +} + +div.highlight .-Color[class*=-C129] { + color: #AF00FF +} + +div.highlight .-Color[class*=-BGC129] { + background-color: #AF00FF +} + +div.highlight .-Color[class*=-C130] { + color: #AF5F00 +} + +div.highlight .-Color[class*=-BGC130] { + background-color: #AF5F00 +} + +div.highlight .-Color[class*=-C131] { + color: #AF5F5F +} + +div.highlight .-Color[class*=-BGC131] { + background-color: #AF5F5F +} + +div.highlight .-Color[class*=-C132] { + color: #AF5F87 +} + +div.highlight .-Color[class*=-BGC132] { + background-color: #AF5F87 +} + +div.highlight .-Color[class*=-C133] { + color: #AF5FAF +} + +div.highlight .-Color[class*=-BGC133] { + background-color: #AF5FAF +} + +div.highlight .-Color[class*=-C134] { + color: #AF5FD7 +} + +div.highlight .-Color[class*=-BGC134] { + background-color: #AF5FD7 +} + +div.highlight .-Color[class*=-C135] { + color: #AF5FFF +} + +div.highlight .-Color[class*=-BGC135] { + background-color: #AF5FFF +} + +div.highlight .-Color[class*=-C136] { + color: #AF8700 +} + +div.highlight .-Color[class*=-BGC136] { + background-color: #AF8700 +} + +div.highlight .-Color[class*=-C137] { + color: #AF875F +} + +div.highlight .-Color[class*=-BGC137] { + background-color: #AF875F +} + +div.highlight .-Color[class*=-C138] { + color: #AF8787 +} + +div.highlight .-Color[class*=-BGC138] { + background-color: #AF8787 +} + +div.highlight .-Color[class*=-C139] { + color: #AF87AF +} + +div.highlight .-Color[class*=-BGC139] { + background-color: #AF87AF +} + +div.highlight .-Color[class*=-C140] { + color: #AF87D7 +} + +div.highlight .-Color[class*=-BGC140] { + background-color: #AF87D7 +} + +div.highlight .-Color[class*=-C141] { + color: #AF87FF +} + +div.highlight .-Color[class*=-BGC141] { + background-color: #AF87FF +} + +div.highlight .-Color[class*=-C142] { + color: #AFAF00 +} + +div.highlight .-Color[class*=-BGC142] { + background-color: #AFAF00 +} + +div.highlight .-Color[class*=-C143] { + color: #AFAF5F +} + +div.highlight .-Color[class*=-BGC143] { + background-color: #AFAF5F +} + +div.highlight .-Color[class*=-C144] { + color: #AFAF87 +} + +div.highlight .-Color[class*=-BGC144] { + background-color: #AFAF87 +} + +div.highlight 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sphinx_lesson.css with the schemes here: https://personal.sron.nl/~pault/#sec:qualitative */ + +/* instructor-note */ +.rst-content .instructor-note { + background: #DDDDDD; +} +.rst-content .instructor-note > .admonition-title { + background: #BBBBBB; +} +.rst-content .instructor-note > .admonition-title::before { + content: ""; +} + +/* callout */ +.rst-content .callout { + background: #EEEEBB; +} +.rst-content .callout > .admonition-title { + background: #BBCC33; +} + +/* questions */ +.rst-content .questions { + background: rgba(253, 219, 199, 0.3); +} +.rst-content .questions > .admonition-title { + background: rgba(204, 51, 17, 0.5); +} + +/* discussion */ +.rst-content .discussion { + background: rgba(231, 212, 232 0.3); +} +.rst-content .discussion > .admonition-title { + background: rgba(194, 165, 207, 0.5); +} + +/* signature */ +.rst-content .signature { + background: rgba(217, 240, 211, 0.3); +} +.rst-content .signature > .admonition-title { + background: rgba(172, 211, 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} /* Literal.Number.Integer.Long */ \ No newline at end of file diff --git a/_static/searchtools.js b/_static/searchtools.js new file mode 100644 index 0000000..b08d58c --- /dev/null +++ b/_static/searchtools.js @@ -0,0 +1,620 @@ +/* + * searchtools.js + * ~~~~~~~~~~~~~~~~ + * + * Sphinx JavaScript utilities for the full-text search. + * + * :copyright: Copyright 2007-2024 by the Sphinx team, see AUTHORS. + * :license: BSD, see LICENSE for details. + * + */ +"use strict"; + +/** + * Simple result scoring code. + */ +if (typeof Scorer === "undefined") { + var Scorer = { + // Implement the following function to further tweak the score for each result + // The function takes a result array [docname, title, anchor, descr, score, filename] + // and returns the new score. + /* + score: result => { + const [docname, title, anchor, descr, score, filename] = result + return score + }, + */ + + // query matches the full name of an object + objNameMatch: 11, + // or matches in the last dotted part of the object name + objPartialMatch: 6, + // Additive scores depending on the priority of the object + objPrio: { + 0: 15, // used to be importantResults + 1: 5, // used to be objectResults + 2: -5, // used to be unimportantResults + }, + // Used when the priority is not in the mapping. + objPrioDefault: 0, + + // query found in title + title: 15, + partialTitle: 7, + // query found in terms + term: 5, + partialTerm: 2, + }; +} + +const _removeChildren = (element) => { + while (element && element.lastChild) element.removeChild(element.lastChild); +}; + +/** + * See https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions#escaping + */ +const _escapeRegExp = (string) => + string.replace(/[.*+\-?^${}()|[\]\\]/g, "\\$&"); // $& means the whole matched string + +const _displayItem = (item, searchTerms, highlightTerms) => { + const docBuilder = DOCUMENTATION_OPTIONS.BUILDER; + const docFileSuffix = DOCUMENTATION_OPTIONS.FILE_SUFFIX; + const docLinkSuffix = DOCUMENTATION_OPTIONS.LINK_SUFFIX; + const showSearchSummary = DOCUMENTATION_OPTIONS.SHOW_SEARCH_SUMMARY; + const contentRoot = document.documentElement.dataset.content_root; + + const [docName, title, anchor, descr, score, _filename] = item; + + let listItem = document.createElement("li"); + let requestUrl; + let linkUrl; + if (docBuilder === "dirhtml") { + // dirhtml builder + let dirname = docName + "/"; + if (dirname.match(/\/index\/$/)) + dirname = dirname.substring(0, dirname.length - 6); + else if (dirname === "index/") dirname = ""; + requestUrl = contentRoot + dirname; + linkUrl = requestUrl; + } else { + // normal html builders + requestUrl = contentRoot + docName + docFileSuffix; + linkUrl = docName + docLinkSuffix; + } + let linkEl = listItem.appendChild(document.createElement("a")); + linkEl.href = linkUrl + anchor; + linkEl.dataset.score = score; + linkEl.innerHTML = title; + if (descr) { + listItem.appendChild(document.createElement("span")).innerHTML = + " (" + descr + ")"; + // highlight search terms in the description + if (SPHINX_HIGHLIGHT_ENABLED) // set in sphinx_highlight.js + highlightTerms.forEach((term) => _highlightText(listItem, term, "highlighted")); + } + else if (showSearchSummary) + fetch(requestUrl) + .then((responseData) => responseData.text()) + .then((data) => { + if (data) + listItem.appendChild( + Search.makeSearchSummary(data, searchTerms, anchor) + ); + // highlight search terms in the summary + if (SPHINX_HIGHLIGHT_ENABLED) // set in sphinx_highlight.js + highlightTerms.forEach((term) => _highlightText(listItem, term, "highlighted")); + }); + Search.output.appendChild(listItem); +}; +const _finishSearch = (resultCount) => { + Search.stopPulse(); + Search.title.innerText = _("Search Results"); + if (!resultCount) + Search.status.innerText = Documentation.gettext( + "Your search did not match any documents. Please make sure that all words are spelled correctly and that you've selected enough categories." + ); + else + Search.status.innerText = _( + "Search finished, found ${resultCount} page(s) matching the search query." + ).replace('${resultCount}', resultCount); +}; +const _displayNextItem = ( + results, + resultCount, + searchTerms, + highlightTerms, +) => { + // results left, load the summary and display it + // this is intended to be dynamic (don't sub resultsCount) + if (results.length) { + _displayItem(results.pop(), searchTerms, highlightTerms); + setTimeout( + () => _displayNextItem(results, resultCount, searchTerms, highlightTerms), + 5 + ); + } + // search finished, update title and status message + else _finishSearch(resultCount); +}; +// Helper function used by query() to order search results. +// Each input is an array of [docname, title, anchor, descr, score, filename]. +// Order the results by score (in opposite order of appearance, since the +// `_displayNextItem` function uses pop() to retrieve items) and then alphabetically. +const _orderResultsByScoreThenName = (a, b) => { + const leftScore = a[4]; + const rightScore = b[4]; + if (leftScore === rightScore) { + // same score: sort alphabetically + const leftTitle = a[1].toLowerCase(); + const rightTitle = b[1].toLowerCase(); + if (leftTitle === rightTitle) return 0; + return leftTitle > rightTitle ? -1 : 1; // inverted is intentional + } + return leftScore > rightScore ? 1 : -1; +}; + +/** + * Default splitQuery function. Can be overridden in ``sphinx.search`` with a + * custom function per language. + * + * The regular expression works by splitting the string on consecutive characters + * that are not Unicode letters, numbers, underscores, or emoji characters. + * This is the same as ``\W+`` in Python, preserving the surrogate pair area. + */ +if (typeof splitQuery === "undefined") { + var splitQuery = (query) => query + .split(/[^\p{Letter}\p{Number}_\p{Emoji_Presentation}]+/gu) + .filter(term => term) // remove remaining empty strings +} + +/** + * Search Module + */ +const Search = { + _index: null, + _queued_query: null, + _pulse_status: -1, + + htmlToText: (htmlString, anchor) => { + const htmlElement = new DOMParser().parseFromString(htmlString, 'text/html'); + for (const removalQuery of [".headerlink", "script", "style"]) { + htmlElement.querySelectorAll(removalQuery).forEach((el) => { el.remove() }); + } + if (anchor) { + const anchorContent = htmlElement.querySelector(`[role="main"] ${anchor}`); + if (anchorContent) return anchorContent.textContent; + + console.warn( + `Anchored content block not found. Sphinx search tries to obtain it via DOM query '[role=main] ${anchor}'. Check your theme or template.` + ); + } + + // if anchor not specified or not found, fall back to main content + const docContent = htmlElement.querySelector('[role="main"]'); + if (docContent) return docContent.textContent; + + console.warn( + "Content block not found. Sphinx search tries to obtain it via DOM query '[role=main]'. Check your theme or template." + ); + return ""; + }, + + init: () => { + const query = new URLSearchParams(window.location.search).get("q"); + document + .querySelectorAll('input[name="q"]') + .forEach((el) => (el.value = query)); + if (query) Search.performSearch(query); + }, + + loadIndex: (url) => + (document.body.appendChild(document.createElement("script")).src = url), + + setIndex: (index) => { + Search._index = index; + if (Search._queued_query !== null) { + const query = Search._queued_query; + Search._queued_query = null; + Search.query(query); + } + }, + + hasIndex: () => Search._index !== null, + + deferQuery: (query) => (Search._queued_query = query), + + stopPulse: () => (Search._pulse_status = -1), + + startPulse: () => { + if (Search._pulse_status >= 0) return; + + const pulse = () => { + Search._pulse_status = (Search._pulse_status + 1) % 4; + Search.dots.innerText = ".".repeat(Search._pulse_status); + if (Search._pulse_status >= 0) window.setTimeout(pulse, 500); + }; + pulse(); + }, + + /** + * perform a search for something (or wait until index is loaded) + */ + performSearch: (query) => { + // create the required interface elements + const searchText = document.createElement("h2"); + searchText.textContent = _("Searching"); + const searchSummary = document.createElement("p"); + searchSummary.classList.add("search-summary"); + searchSummary.innerText = ""; + const searchList = document.createElement("ul"); + searchList.classList.add("search"); + + const out = document.getElementById("search-results"); + Search.title = out.appendChild(searchText); + Search.dots = Search.title.appendChild(document.createElement("span")); + Search.status = out.appendChild(searchSummary); + Search.output = out.appendChild(searchList); + + const searchProgress = document.getElementById("search-progress"); + // Some themes don't use the search progress node + if (searchProgress) { + searchProgress.innerText = _("Preparing search..."); + } + Search.startPulse(); + + // index already loaded, the browser was quick! + if (Search.hasIndex()) Search.query(query); + else Search.deferQuery(query); + }, + + _parseQuery: (query) => { + // stem the search terms and add them to the correct list + const stemmer = new Stemmer(); + const searchTerms = new Set(); + const excludedTerms = new Set(); + const highlightTerms = new Set(); + const objectTerms = new Set(splitQuery(query.toLowerCase().trim())); + splitQuery(query.trim()).forEach((queryTerm) => { + const queryTermLower = queryTerm.toLowerCase(); + + // maybe skip this "word" + // stopwords array is from language_data.js + if ( + stopwords.indexOf(queryTermLower) !== -1 || + queryTerm.match(/^\d+$/) + ) + return; + + // stem the word + let word = stemmer.stemWord(queryTermLower); + // select the correct list + if (word[0] === "-") excludedTerms.add(word.substr(1)); + else { + searchTerms.add(word); + highlightTerms.add(queryTermLower); + } + }); + + if (SPHINX_HIGHLIGHT_ENABLED) { // set in sphinx_highlight.js + localStorage.setItem("sphinx_highlight_terms", [...highlightTerms].join(" ")) + } + + // console.debug("SEARCH: searching for:"); + // console.info("required: ", [...searchTerms]); + // console.info("excluded: ", [...excludedTerms]); + + return [query, searchTerms, excludedTerms, highlightTerms, objectTerms]; + }, + + /** + * execute search (requires search index to be loaded) + */ + _performSearch: (query, searchTerms, excludedTerms, highlightTerms, objectTerms) => { + const filenames = Search._index.filenames; + const docNames = Search._index.docnames; + const titles = Search._index.titles; + const allTitles = Search._index.alltitles; + const indexEntries = Search._index.indexentries; + + // Collect multiple result groups to be sorted separately and then ordered. + // Each is an array of [docname, title, anchor, descr, score, filename]. + const normalResults = []; + const nonMainIndexResults = []; + + _removeChildren(document.getElementById("search-progress")); + + const queryLower = query.toLowerCase().trim(); + for (const [title, foundTitles] of Object.entries(allTitles)) { + if (title.toLowerCase().trim().includes(queryLower) && (queryLower.length >= title.length/2)) { + for (const [file, id] of foundTitles) { + const score = Math.round(Scorer.title * queryLower.length / title.length); + const boost = titles[file] === title ? 1 : 0; // add a boost for document titles + normalResults.push([ + docNames[file], + titles[file] !== title ? `${titles[file]} > ${title}` : title, + id !== null ? "#" + id : "", + null, + score + boost, + filenames[file], + ]); + } + } + } + + // search for explicit entries in index directives + for (const [entry, foundEntries] of Object.entries(indexEntries)) { + if (entry.includes(queryLower) && (queryLower.length >= entry.length/2)) { + for (const [file, id, isMain] of foundEntries) { + const score = Math.round(100 * queryLower.length / entry.length); + const result = [ + docNames[file], + titles[file], + id ? "#" + id : "", + null, + score, + filenames[file], + ]; + if (isMain) { + normalResults.push(result); + } else { + nonMainIndexResults.push(result); + } + } + } + } + + // lookup as object + objectTerms.forEach((term) => + normalResults.push(...Search.performObjectSearch(term, objectTerms)) + ); + + // lookup as search terms in fulltext + normalResults.push(...Search.performTermsSearch(searchTerms, excludedTerms)); + + // let the scorer override scores with a custom scoring function + if (Scorer.score) { + normalResults.forEach((item) => (item[4] = Scorer.score(item))); + nonMainIndexResults.forEach((item) => (item[4] = Scorer.score(item))); + } + + // Sort each group of results by score and then alphabetically by name. + normalResults.sort(_orderResultsByScoreThenName); + nonMainIndexResults.sort(_orderResultsByScoreThenName); + + // Combine the result groups in (reverse) order. + // Non-main index entries are typically arbitrary cross-references, + // so display them after other results. + let results = [...nonMainIndexResults, ...normalResults]; + + // remove duplicate search results + // note the reversing of results, so that in the case of duplicates, the highest-scoring entry is kept + let seen = new Set(); + results = results.reverse().reduce((acc, result) => { + let resultStr = result.slice(0, 4).concat([result[5]]).map(v => String(v)).join(','); + if (!seen.has(resultStr)) { + acc.push(result); + seen.add(resultStr); + } + return acc; + }, []); + + return results.reverse(); + }, + + query: (query) => { + const [searchQuery, searchTerms, excludedTerms, highlightTerms, objectTerms] = Search._parseQuery(query); + const results = Search._performSearch(searchQuery, searchTerms, excludedTerms, highlightTerms, objectTerms); + + // for debugging + //Search.lastresults = results.slice(); // a copy + // console.info("search results:", Search.lastresults); + + // print the results + _displayNextItem(results, results.length, searchTerms, highlightTerms); + }, + + /** + * search for object names + */ + performObjectSearch: (object, objectTerms) => { + const filenames = Search._index.filenames; + const docNames = Search._index.docnames; + const objects = Search._index.objects; + const objNames = Search._index.objnames; + const titles = Search._index.titles; + + const results = []; + + const objectSearchCallback = (prefix, match) => { + const name = match[4] + const fullname = (prefix ? prefix + "." : "") + name; + const fullnameLower = fullname.toLowerCase(); + if (fullnameLower.indexOf(object) < 0) return; + + let score = 0; + const parts = fullnameLower.split("."); + + // check for different match types: exact matches of full name or + // "last name" (i.e. last dotted part) + if (fullnameLower === object || parts.slice(-1)[0] === object) + score += Scorer.objNameMatch; + else if (parts.slice(-1)[0].indexOf(object) > -1) + score += Scorer.objPartialMatch; // matches in last name + + const objName = objNames[match[1]][2]; + const title = titles[match[0]]; + + // If more than one term searched for, we require other words to be + // found in the name/title/description + const otherTerms = new Set(objectTerms); + otherTerms.delete(object); + if (otherTerms.size > 0) { + const haystack = `${prefix} ${name} ${objName} ${title}`.toLowerCase(); + if ( + [...otherTerms].some((otherTerm) => haystack.indexOf(otherTerm) < 0) + ) + return; + } + + let anchor = match[3]; + if (anchor === "") anchor = fullname; + else if (anchor === "-") anchor = objNames[match[1]][1] + "-" + fullname; + + const descr = objName + _(", in ") + title; + + // add custom score for some objects according to scorer + if (Scorer.objPrio.hasOwnProperty(match[2])) + score += Scorer.objPrio[match[2]]; + else score += Scorer.objPrioDefault; + + results.push([ + docNames[match[0]], + fullname, + "#" + anchor, + descr, + score, + filenames[match[0]], + ]); + }; + Object.keys(objects).forEach((prefix) => + objects[prefix].forEach((array) => + objectSearchCallback(prefix, array) + ) + ); + return results; + }, + + /** + * search for full-text terms in the index + */ + performTermsSearch: (searchTerms, excludedTerms) => { + // prepare search + const terms = Search._index.terms; + const titleTerms = Search._index.titleterms; + const filenames = Search._index.filenames; + const docNames = Search._index.docnames; + const titles = Search._index.titles; + + const scoreMap = new Map(); + const fileMap = new Map(); + + // perform the search on the required terms + searchTerms.forEach((word) => { + const files = []; + const arr = [ + { files: terms[word], score: Scorer.term }, + { files: titleTerms[word], score: Scorer.title }, + ]; + // add support for partial matches + if (word.length > 2) { + const escapedWord = _escapeRegExp(word); + if (!terms.hasOwnProperty(word)) { + Object.keys(terms).forEach((term) => { + if (term.match(escapedWord)) + arr.push({ files: terms[term], score: Scorer.partialTerm }); + }); + } + if (!titleTerms.hasOwnProperty(word)) { + Object.keys(titleTerms).forEach((term) => { + if (term.match(escapedWord)) + arr.push({ files: titleTerms[term], score: Scorer.partialTitle }); + }); + } + } + + // no match but word was a required one + if (arr.every((record) => record.files === undefined)) return; + + // found search word in contents + arr.forEach((record) => { + if (record.files === undefined) return; + + let recordFiles = record.files; + if (recordFiles.length === undefined) recordFiles = [recordFiles]; + files.push(...recordFiles); + + // set score for the word in each file + recordFiles.forEach((file) => { + if (!scoreMap.has(file)) scoreMap.set(file, {}); + scoreMap.get(file)[word] = record.score; + }); + }); + + // create the mapping + files.forEach((file) => { + if (!fileMap.has(file)) fileMap.set(file, [word]); + else if (fileMap.get(file).indexOf(word) === -1) fileMap.get(file).push(word); + }); + }); + + // now check if the files don't contain excluded terms + const results = []; + for (const [file, wordList] of fileMap) { + // check if all requirements are matched + + // as search terms with length < 3 are discarded + const filteredTermCount = [...searchTerms].filter( + (term) => term.length > 2 + ).length; + if ( + wordList.length !== searchTerms.size && + wordList.length !== filteredTermCount + ) + continue; + + // ensure that none of the excluded terms is in the search result + if ( + [...excludedTerms].some( + (term) => + terms[term] === file || + titleTerms[term] === file || + (terms[term] || []).includes(file) || + (titleTerms[term] || []).includes(file) + ) + ) + break; + + // select one (max) score for the file. + const score = Math.max(...wordList.map((w) => scoreMap.get(file)[w])); + // add result to the result list + results.push([ + docNames[file], + titles[file], + "", + null, + score, + filenames[file], + ]); + } + return results; + }, + + /** + * helper function to return a node containing the + * search summary for a given text. keywords is a list + * of stemmed words. + */ + makeSearchSummary: (htmlText, keywords, anchor) => { + const text = Search.htmlToText(htmlText, anchor); + if (text === "") return null; + + const textLower = text.toLowerCase(); + const actualStartPosition = [...keywords] + .map((k) => textLower.indexOf(k.toLowerCase())) + .filter((i) => i > -1) + .slice(-1)[0]; + const startWithContext = Math.max(actualStartPosition - 120, 0); + + const top = startWithContext === 0 ? "" : "..."; + const tail = startWithContext + 240 < text.length ? "..." : ""; + + let summary = document.createElement("p"); + summary.classList.add("context"); + summary.textContent = top + text.substr(startWithContext, 240).trim() + tail; + + return summary; + }, +}; + +_ready(Search.init); diff --git a/_static/sphinx_highlight.js b/_static/sphinx_highlight.js new file mode 100644 index 0000000..8a96c69 --- /dev/null +++ b/_static/sphinx_highlight.js @@ -0,0 +1,154 @@ +/* Highlighting utilities for Sphinx HTML documentation. */ +"use strict"; + +const SPHINX_HIGHLIGHT_ENABLED = true + +/** + * highlight a given string on a node by wrapping it in + * span elements with the given class name. + */ +const _highlight = (node, addItems, text, className) => { + if (node.nodeType === Node.TEXT_NODE) { + const val = node.nodeValue; + const parent = node.parentNode; + const pos = val.toLowerCase().indexOf(text); + if ( + pos >= 0 && + !parent.classList.contains(className) && + !parent.classList.contains("nohighlight") + ) { + let span; + + const closestNode = parent.closest("body, svg, foreignObject"); + const isInSVG = closestNode && closestNode.matches("svg"); + if (isInSVG) { + span = document.createElementNS("http://www.w3.org/2000/svg", "tspan"); + } else { + span = document.createElement("span"); + span.classList.add(className); + } + + span.appendChild(document.createTextNode(val.substr(pos, text.length))); + const rest = document.createTextNode(val.substr(pos + text.length)); + parent.insertBefore( + span, + parent.insertBefore( + rest, + node.nextSibling + ) + ); + node.nodeValue = val.substr(0, pos); + /* There may be more occurrences of search term in this node. So call this + * function recursively on the remaining fragment. + */ + _highlight(rest, addItems, text, className); + + if (isInSVG) { + const rect = document.createElementNS( + "http://www.w3.org/2000/svg", + "rect" + ); + const bbox = parent.getBBox(); + rect.x.baseVal.value = bbox.x; + rect.y.baseVal.value = bbox.y; + rect.width.baseVal.value = bbox.width; + rect.height.baseVal.value = bbox.height; + rect.setAttribute("class", className); + addItems.push({ parent: parent, target: rect }); + } + } + } else if (node.matches && !node.matches("button, select, textarea")) { + node.childNodes.forEach((el) => _highlight(el, addItems, text, className)); + } +}; +const _highlightText = (thisNode, text, className) => { + let addItems = []; + _highlight(thisNode, addItems, text, className); + addItems.forEach((obj) => + obj.parent.insertAdjacentElement("beforebegin", obj.target) + ); +}; + +/** + * Small JavaScript module for the documentation. + */ +const SphinxHighlight = { + + /** + * highlight the search words provided in localstorage in the text + */ + highlightSearchWords: () => { + if (!SPHINX_HIGHLIGHT_ENABLED) return; // bail if no highlight + + // get and clear terms from localstorage + const url = new URL(window.location); + const highlight = + localStorage.getItem("sphinx_highlight_terms") + || url.searchParams.get("highlight") + || ""; + localStorage.removeItem("sphinx_highlight_terms") + url.searchParams.delete("highlight"); + window.history.replaceState({}, "", url); + + // get individual terms from highlight string + const terms = highlight.toLowerCase().split(/\s+/).filter(x => x); + if (terms.length === 0) return; // nothing to do + + // There should never be more than one element matching "div.body" + const divBody = document.querySelectorAll("div.body"); + const body = divBody.length ? divBody[0] : document.querySelector("body"); + window.setTimeout(() => { + terms.forEach((term) => _highlightText(body, term, "highlighted")); + }, 10); + + const searchBox = document.getElementById("searchbox"); + if (searchBox === null) return; + searchBox.appendChild( + document + .createRange() + .createContextualFragment( + '

' + + '' + + _("Hide Search Matches") + + "

" + ) + ); + }, + + /** + * helper function to hide the search marks again + */ + hideSearchWords: () => { + document + .querySelectorAll("#searchbox .highlight-link") + .forEach((el) => el.remove()); + document + .querySelectorAll("span.highlighted") + .forEach((el) => el.classList.remove("highlighted")); + localStorage.removeItem("sphinx_highlight_terms") + }, + + initEscapeListener: () => { + // only install a listener if it is really needed + if (!DOCUMENTATION_OPTIONS.ENABLE_SEARCH_SHORTCUTS) return; + + document.addEventListener("keydown", (event) => { + // bail for input elements + if (BLACKLISTED_KEY_CONTROL_ELEMENTS.has(document.activeElement.tagName)) return; + // bail with special keys + if (event.shiftKey || event.altKey || event.ctrlKey || event.metaKey) return; + if (DOCUMENTATION_OPTIONS.ENABLE_SEARCH_SHORTCUTS && (event.key === "Escape")) { + SphinxHighlight.hideSearchWords(); + event.preventDefault(); + } + }); + }, +}; + +_ready(() => { + /* Do not call highlightSearchWords() when we are on the search page. + * It will highlight words from the *previous* search query. + */ + if (typeof Search === "undefined") SphinxHighlight.highlightSearchWords(); + SphinxHighlight.initEscapeListener(); +}); diff --git a/_static/sphinx_lesson.css b/_static/sphinx_lesson.css new file mode 100644 index 0000000..14b20c6 --- /dev/null +++ b/_static/sphinx_lesson.css @@ -0,0 +1,51 @@ +/* sphinx_lesson.css */ + +body.wy-body-for-nav img.with-border { + border: 2px solid; +} + +.rst-content .admonition-no-content { + padding-bottom: 0px; +} + +.rst-content .demo > .admonition-title::before { + content: "\01F440"; /* Eyes */ } +.rst-content .type-along > .admonition-title::before { + content: "\02328\0FE0F"; /* Keyboard */ } +.rst-content .exercise > .admonition-title::before { + content: "\0270D\0FE0F"; /* Hand */ } +.rst-content .solution > .admonition-title::before { + content: "\02714\0FE0E"; /* Check mark */ } +.rst-content .homework > .admonition-title::before { + content: "\01F4DD"; /* Memo */ } +.rst-content .discussion > .admonition-title::before { + content: "\01F4AC"; /* Speech balloon */ } +.rst-content .questions > .admonition-title::before { + content: "\02753\0FE0E"; /* Question mark */ } +.rst-content .prerequisites > .admonition-title::before { + content: "\02699"; /* Gear */ } +.rst-content .seealso > .admonition-title::before { + content: "\027A1\0FE0E"; /* Question mark */ } + + +/* instructor-note */ +.rst-content .instructor-note { + background: #e7e7e7; +} +.rst-content .instructor-note > .admonition-title { + background: #6a6a6a; +} +.rst-content .instructor-note > .admonition-title::before { + content: ""; +} + + +/* sphinx_toggle_button, make the font white */ +.rst-content .toggle.admonition button.toggle-button { + color: white; +} + +/* sphinx-togglebutton, remove underflow when toggled to hidden mode */ +.rst-content .admonition.toggle-hidden { + padding-bottom: 0px; +} diff --git a/_static/sphinx_rtd_theme_ext_color_contrast.css b/_static/sphinx_rtd_theme_ext_color_contrast.css new file mode 100644 index 0000000..e68feb8 --- /dev/null +++ b/_static/sphinx_rtd_theme_ext_color_contrast.css @@ -0,0 +1,47 @@ +/* The following are for web accessibility of sphinx_rtd_theme: they + * solve some of the most frequent contrast issues. Remove when this + * solved: + * https://github.com/readthedocs/sphinx_rtd_theme/issues/971 + */ +/* background: #fcfcfc, note boxes #E7F2FA */ +a { color: #2573A7; } /* original #2980B9, #1F5C84; */ +body { color: #242424; } /* original #404040, #383838 */ +.wy-side-nav-search>a, .wy-side-nav-search .wy-dropdown>a { + color: #ffffff; +} /* original #fcfcfc */ +footer { color: #737373; } /* original gray=#808080*/ +footer span.commit code, footer span.commit .rst-content tt, .rst-content footer span.commit tt { + color: #737373; +} /* original gray=#808080*/ +.rst-content tt.literal, .rst-content tt.literal, .rst-content code.literal { + color: #AB2314; +} +/* Sidebar background */ +.wy-side-nav-search { background-color: #277CB4;} + +/* Same, but for pygments */ +.highlight .ch { color: #3E7A89; } /* #! line */ +.highlight .c1 { color: #3E7A89; } /* also comments */ +.highlight .nv { color: #AD3ECC; } /* variable */ +.highlight .gp { color: #B45608; } /* prompt character, $*/ +.highlight .si { color: #3975B1; } /* ${} variable text */ +.highlight .nc { color: #0C78A7; } + +/* Sphinx admonitions */ +/* warning */ +.wy-alert.wy-alert-warning .wy-alert-title, .rst-content .wy-alert-warning.note .wy-alert-title, .rst-content .attention .wy-alert-title, .rst-content .caution .wy-alert-title, .rst-content .wy-alert-warning.danger .wy-alert-title, .rst-content .wy-alert-warning.error .wy-alert-title, .rst-content .wy-alert-warning.hint .wy-alert-title, .rst-content .wy-alert-warning.important .wy-alert-title, .rst-content .wy-alert-warning.tip .wy-alert-title, .rst-content .warning .wy-alert-title, .rst-content .wy-alert-warning.seealso .wy-alert-title, .rst-content .admonition-todo .wy-alert-title, .rst-content .wy-alert-warning.admonition .wy-alert-title, .wy-alert.wy-alert-warning .rst-content .admonition-title, .rst-content .wy-alert.wy-alert-warning .admonition-title, .rst-content .wy-alert-warning.note .admonition-title, .rst-content .attention .admonition-title, .rst-content .caution .admonition-title, .rst-content .wy-alert-warning.danger .admonition-title, .rst-content .wy-alert-warning.error .admonition-title, .rst-content .wy-alert-warning.hint .admonition-title, .rst-content .wy-alert-warning.important .admonition-title, .rst-content .wy-alert-warning.tip .admonition-title, .rst-content .warning .admonition-title, .rst-content .wy-alert-warning.seealso .admonition-title, .rst-content .admonition-todo .admonition-title, .rst-content .wy-alert-warning.admonition .admonition-title { + background: #B15E16; } +/* important */ +.wy-alert.wy-alert-success .wy-alert-title, .rst-content .wy-alert-success.note .wy-alert-title, .rst-content .wy-alert-success.attention .wy-alert-title, .rst-content .wy-alert-success.caution .wy-alert-title, .rst-content .wy-alert-success.danger .wy-alert-title, .rst-content .wy-alert-success.error .wy-alert-title, .rst-content .hint .wy-alert-title, .rst-content .important .wy-alert-title, .rst-content .tip .wy-alert-title, .rst-content .wy-alert-success.warning .wy-alert-title, .rst-content .wy-alert-success.seealso .wy-alert-title, .rst-content .wy-alert-success.admonition-todo .wy-alert-title, .rst-content .wy-alert-success.admonition .wy-alert-title, .wy-alert.wy-alert-success .rst-content .admonition-title, .rst-content .wy-alert.wy-alert-success .admonition-title, .rst-content .wy-alert-success.note .admonition-title, .rst-content .wy-alert-success.attention .admonition-title, .rst-content .wy-alert-success.caution .admonition-title, .rst-content .wy-alert-success.danger .admonition-title, .rst-content .wy-alert-success.error .admonition-title, .rst-content .hint .admonition-title, .rst-content .important .admonition-title, .rst-content .tip .admonition-title, .rst-content .wy-alert-success.warning .admonition-title, .rst-content .wy-alert-success.seealso .admonition-title, .rst-content .wy-alert-success.admonition-todo .admonition-title, .rst-content .wy-alert-success.admonition .admonition-title { + background: #12826C; } +/* seealso, note, etc */ +.wy-alert.wy-alert-info .wy-alert-title, .rst-content .note .wy-alert-title, .rst-content .wy-alert-info.attention .wy-alert-title, .rst-content .wy-alert-info.caution .wy-alert-title, .rst-content .wy-alert-info.danger .wy-alert-title, .rst-content .wy-alert-info.error .wy-alert-title, .rst-content .wy-alert-info.hint .wy-alert-title, .rst-content .wy-alert-info.important .wy-alert-title, .rst-content .wy-alert-info.tip .wy-alert-title, .rst-content .wy-alert-info.warning .wy-alert-title, .rst-content .seealso .wy-alert-title, .rst-content .wy-alert-info.admonition-todo .wy-alert-title, .rst-content .wy-alert-info.admonition .wy-alert-title, .wy-alert.wy-alert-info .rst-content .admonition-title, .rst-content .wy-alert.wy-alert-info .admonition-title, .rst-content .note .admonition-title, .rst-content .wy-alert-info.attention .admonition-title, .rst-content .wy-alert-info.caution .admonition-title, .rst-content .wy-alert-info.danger .admonition-title, .rst-content .wy-alert-info.error .admonition-title, .rst-content .wy-alert-info.hint .admonition-title, .rst-content .wy-alert-info.important .admonition-title, .rst-content .wy-alert-info.tip .admonition-title, .rst-content .wy-alert-info.warning .admonition-title, .rst-content .seealso .admonition-title, .rst-content .wy-alert-info.admonition-todo .admonition-title, .rst-content .wy-alert-info.admonition .admonition-title { + background: #277CB4; } +/* error, danger */ +.rst-content .danger .admonition-title, .rst-content .danger .wy-alert-title, .rst-content .error .admonition-title, .rst-content .error .wy-alert-title, .rst-content .wy-alert-danger.admonition-todo .admonition-title, .rst-content .wy-alert-danger.admonition-todo .wy-alert-title, .rst-content .wy-alert-danger.admonition .admonition-title, .rst-content .wy-alert-danger.admonition .wy-alert-title, .rst-content .wy-alert-danger.attention .admonition-title, .rst-content .wy-alert-danger.attention .wy-alert-title, .rst-content .wy-alert-danger.caution .admonition-title, .rst-content .wy-alert-danger.caution .wy-alert-title, .rst-content .wy-alert-danger.hint .admonition-title, .rst-content .wy-alert-danger.hint .wy-alert-title, .rst-content .wy-alert-danger.important .admonition-title, .rst-content .wy-alert-danger.important .wy-alert-title, .rst-content .wy-alert-danger.note .admonition-title, .rst-content .wy-alert-danger.note .wy-alert-title, .rst-content .wy-alert-danger.seealso .admonition-title, .rst-content .wy-alert-danger.seealso .wy-alert-title, .rst-content .wy-alert-danger.tip .admonition-title, .rst-content .wy-alert-danger.tip .wy-alert-title, .rst-content .wy-alert-danger.warning .admonition-title, .rst-content .wy-alert-danger.warning .wy-alert-title, .rst-content .wy-alert.wy-alert-danger .admonition-title, .wy-alert.wy-alert-danger .rst-content .admonition-title, .wy-alert.wy-alert-danger .wy-alert-title { + background: #e31704; +} + +/* Generic admonition titles */ +.wy-alert-title, .rst-content .admonition-title { + background: #277CB4; } diff --git a/_static/tabs.css b/_static/tabs.css new file mode 100644 index 0000000..957ba60 --- /dev/null +++ b/_static/tabs.css @@ -0,0 +1,89 @@ +.sphinx-tabs { + margin-bottom: 1rem; +} + +[role="tablist"] { + border-bottom: 1px solid #a0b3bf; +} + +.sphinx-tabs-tab { + position: relative; + font-family: Lato,'Helvetica Neue',Arial,Helvetica,sans-serif; + color: #1D5C87; + line-height: 24px; + margin: 0; + font-size: 16px; + font-weight: 400; + background-color: rgba(255, 255, 255, 0); + border-radius: 5px 5px 0 0; + border: 0; + padding: 1rem 1.5rem; + margin-bottom: 0; +} + +.sphinx-tabs-tab[aria-selected="true"] { + font-weight: 700; + border: 1px solid #a0b3bf; + border-bottom: 1px solid white; + margin: -1px; + background-color: white; +} + +.sphinx-tabs-tab:focus { + z-index: 1; + outline-offset: 1px; +} + +.sphinx-tabs-panel { + position: relative; + padding: 1rem; + border: 1px solid #a0b3bf; + margin: 0px -1px -1px -1px; + border-radius: 0 0 5px 5px; + border-top: 0; + background: white; +} + +.sphinx-tabs-panel.code-tab { + padding: 0.4rem; +} + +.sphinx-tab img { + margin-bottom: 24 px; +} + +/* Dark theme preference styling */ + +@media (prefers-color-scheme: dark) { + body[data-theme="auto"] .sphinx-tabs-panel { + color: white; + background-color: rgb(50, 50, 50); + } + + body[data-theme="auto"] .sphinx-tabs-tab { + color: white; + background-color: rgba(255, 255, 255, 0.05); + } + + body[data-theme="auto"] .sphinx-tabs-tab[aria-selected="true"] { + border-bottom: 1px solid rgb(50, 50, 50); + background-color: rgb(50, 50, 50); + } +} + +/* Explicit dark theme styling */ + +body[data-theme="dark"] .sphinx-tabs-panel { + color: white; + background-color: rgb(50, 50, 50); +} + +body[data-theme="dark"] .sphinx-tabs-tab { + color: white; + background-color: rgba(255, 255, 255, 0.05); +} + +body[data-theme="dark"] .sphinx-tabs-tab[aria-selected="true"] { + border-bottom: 2px solid rgb(50, 50, 50); + background-color: rgb(50, 50, 50); +} diff --git a/_static/tabs.js b/_static/tabs.js new file mode 100644 index 0000000..48dc303 --- /dev/null +++ b/_static/tabs.js @@ -0,0 +1,145 @@ +try { + var session = window.sessionStorage || {}; +} catch (e) { + var session = {}; +} + +window.addEventListener("DOMContentLoaded", () => { + const allTabs = document.querySelectorAll('.sphinx-tabs-tab'); + const tabLists = document.querySelectorAll('[role="tablist"]'); + + allTabs.forEach(tab => { + tab.addEventListener("click", changeTabs); + }); + + tabLists.forEach(tabList => { + tabList.addEventListener("keydown", keyTabs); + }); + + // Restore group tab selection from session + const lastSelected = session.getItem('sphinx-tabs-last-selected'); + if (lastSelected != null) selectNamedTabs(lastSelected); +}); + +/** + * Key focus left and right between sibling elements using arrows + * @param {Node} e the element in focus when key was pressed + */ +function keyTabs(e) { + const tab = e.target; + let nextTab = null; + if (e.keyCode === 39 || e.keyCode === 37) { + tab.setAttribute("tabindex", -1); + // Move right + if (e.keyCode === 39) { + nextTab = tab.nextElementSibling; + if (nextTab === null) { + nextTab = tab.parentNode.firstElementChild; + } + // Move left + } else if (e.keyCode === 37) { + nextTab = tab.previousElementSibling; + if (nextTab === null) { + nextTab = tab.parentNode.lastElementChild; + } + } + } + + if (nextTab !== null) { + nextTab.setAttribute("tabindex", 0); + nextTab.focus(); + } +} + +/** + * Select or deselect clicked tab. If a group tab + * is selected, also select tab in other tabLists. + * @param {Node} e the element that was clicked + */ +function changeTabs(e) { + // Use this instead of the element that was clicked, in case it's a child + const notSelected = this.getAttribute("aria-selected") === "false"; + const positionBefore = this.parentNode.getBoundingClientRect().top; + const notClosable = !this.parentNode.classList.contains("closeable"); + + deselectTabList(this); + + if (notSelected || notClosable) { + selectTab(this); + const name = this.getAttribute("name"); + selectNamedTabs(name, this.id); + + if (this.classList.contains("group-tab")) { + // Persist during session + session.setItem('sphinx-tabs-last-selected', name); + } + } + + const positionAfter = this.parentNode.getBoundingClientRect().top; + const positionDelta = positionAfter - positionBefore; + // Scroll to offset content resizing + window.scrollTo(0, window.scrollY + positionDelta); +} + +/** + * Select tab and show associated panel. + * @param {Node} tab tab to select + */ +function selectTab(tab) { + tab.setAttribute("aria-selected", true); + + // Show the associated panel + document + .getElementById(tab.getAttribute("aria-controls")) + .removeAttribute("hidden"); +} + +/** + * Hide the panels associated with all tabs within the + * tablist containing this tab. + * @param {Node} tab a tab within the tablist to deselect + */ +function deselectTabList(tab) { + const parent = tab.parentNode; + const grandparent = parent.parentNode; + + Array.from(parent.children) + .forEach(t => t.setAttribute("aria-selected", false)); + + Array.from(grandparent.children) + .slice(1) // Skip tablist + .forEach(panel => panel.setAttribute("hidden", true)); +} + +/** + * Select grouped tabs with the same name, but no the tab + * with the given id. + * @param {Node} name name of grouped tab to be selected + * @param {Node} clickedId id of clicked tab + */ +function selectNamedTabs(name, clickedId=null) { + const groupedTabs = document.querySelectorAll(`.sphinx-tabs-tab[name="${name}"]`); + const tabLists = Array.from(groupedTabs).map(tab => tab.parentNode); + + tabLists + .forEach(tabList => { + // Don't want to change the tabList containing the clicked tab + const clickedTab = tabList.querySelector(`[id="${clickedId}"]`); + if (clickedTab === null ) { + // Select first tab with matching name + const tab = tabList.querySelector(`.sphinx-tabs-tab[name="${name}"]`); + deselectTabList(tab); + selectTab(tab); + } + }) +} + +if (typeof exports === 'undefined') { + exports = {}; +} + +exports.keyTabs = keyTabs; +exports.changeTabs = changeTabs; +exports.selectTab = selectTab; +exports.deselectTabList = deselectTabList; +exports.selectNamedTabs = selectNamedTabs; diff --git a/_static/term_role_formatting.css b/_static/term_role_formatting.css new file mode 100644 index 0000000..0b66095 --- /dev/null +++ b/_static/term_role_formatting.css @@ -0,0 +1,4 @@ +/* Make terms bold */ +a.reference span.std-term { + font-weight: bold; +} diff --git a/_static/togglebutton.css b/_static/togglebutton.css new file mode 100644 index 0000000..54a6787 --- /dev/null +++ b/_static/togglebutton.css @@ -0,0 +1,160 @@ +/** + * Admonition-based toggles + */ + +/* Visibility of the target */ +.admonition.toggle .admonition-title ~ * { + transition: opacity .3s, height .3s; +} + +/* Toggle buttons inside admonitions so we see the title */ +.admonition.toggle { + position: relative; +} + +/* Titles should cut off earlier to avoid overlapping w/ button */ +.admonition.toggle .admonition-title { + padding-right: 25%; + cursor: pointer; +} + +/* Hovering will cause a slight shift in color to make it feel interactive */ +.admonition.toggle .admonition-title:hover { + box-shadow: inset 0 0 0px 20px rgb(0 0 0 / 1%); +} + +/* Hovering will cause a slight shift in color to make it feel interactive */ +.admonition.toggle .admonition-title:active { + box-shadow: inset 0 0 0px 20px rgb(0 0 0 / 3%); +} + +/* Remove extra whitespace below the admonition title when hidden */ +.admonition.toggle-hidden { + padding-bottom: 0; +} + +.admonition.toggle-hidden .admonition-title { + margin-bottom: 0; +} + +/* hides all the content of a page until de-toggled */ +.admonition.toggle-hidden .admonition-title ~ * { + height: 0; + margin: 0; + opacity: 0; + visibility: hidden; +} + +/* General button style and position*/ +button.toggle-button { + /** + * Background and shape. By default there's no background + * but users can style as they wish + */ + background: none; + border: none; + outline: none; + + /* Positioning just inside the admonition title */ + position: absolute; + right: 0.5em; + padding: 0px; + border: none; + outline: none; +} + +/* Display the toggle hint on wide screens */ +@media (min-width: 768px) { + button.toggle-button.toggle-button-hidden:before { + content: attr(data-toggle-hint); /* This will be filled in by JS */ + font-size: .8em; + align-self: center; + } +} + +/* Icon behavior */ +.tb-icon { + transition: transform .2s ease-out; + height: 1.5em; + width: 1.5em; + stroke: currentColor; /* So that we inherit the color of other text */ +} + +/* The icon should point right when closed, down when open. */ +/* Open */ +.admonition.toggle button .tb-icon { + transform: rotate(90deg); +} + +/* Closed */ +.admonition.toggle button.toggle-button-hidden .tb-icon { + transform: rotate(0deg); +} + +/* With details toggles, we don't rotate the icon so it points right */ +details.toggle-details .tb-icon { + height: 1.4em; + width: 1.4em; + margin-top: 0.1em; /* To center the button vertically */ +} + + +/** + * Details-based toggles. + * In this case, we wrap elements with `.toggle` in a details block. + */ + +/* Details blocks */ +details.toggle-details { + margin: 1em 0; +} + + +details.toggle-details summary { + display: flex; + align-items: center; + cursor: pointer; + list-style: none; + border-radius: .2em; + border-left: 3px solid #1976d2; + background-color: rgb(204 204 204 / 10%); + padding: 0.2em 0.7em 0.3em 0.5em; /* Less padding on left because the SVG has left margin */ + font-size: 0.9em; +} + +details.toggle-details summary:hover { + background-color: rgb(204 204 204 / 20%); +} + +details.toggle-details summary:active { + background: rgb(204 204 204 / 28%); +} + +.toggle-details__summary-text { + margin-left: 0.2em; +} + +details.toggle-details[open] summary { + margin-bottom: .5em; +} + +details.toggle-details[open] summary .tb-icon { + transform: rotate(90deg); +} + +details.toggle-details[open] summary ~ * { + animation: toggle-fade-in .3s ease-out; +} + +@keyframes toggle-fade-in { + from {opacity: 0%;} + to {opacity: 100%;} +} + +/* Print rules - we hide all toggle button elements at print */ +@media print { + /* Always hide the summary so the button doesn't show up */ + details.toggle-details summary { + display: none; + } +} \ No newline at end of file diff --git a/_static/togglebutton.js b/_static/togglebutton.js new file mode 100644 index 0000000..215a7ee --- /dev/null +++ b/_static/togglebutton.js @@ -0,0 +1,187 @@ +/** + * Add Toggle Buttons to elements + */ + +let toggleChevron = ` + + + +`; + +var initToggleItems = () => { + var itemsToToggle = document.querySelectorAll(togglebuttonSelector); + console.log(`[togglebutton]: Adding toggle buttons to ${itemsToToggle.length} items`) + // Add the button to each admonition and hook up a callback to toggle visibility + itemsToToggle.forEach((item, index) => { + if (item.classList.contains("admonition")) { + // If it's an admonition block, then we'll add a button inside + // Generate unique IDs for this item + var toggleID = `toggle-${index}`; + var buttonID = `button-${toggleID}`; + + item.setAttribute('id', toggleID); + if (!item.classList.contains("toggle")){ + item.classList.add("toggle"); + } + // This is the button that will be added to each item to trigger the toggle + var collapseButton = ` + `; + + title = item.querySelector(".admonition-title") + title.insertAdjacentHTML("beforeend", collapseButton); + thisButton = document.getElementById(buttonID); + + // Add click handlers for the button + admonition title (if admonition) + admonitionTitle = document.querySelector(`#${toggleID} > .admonition-title`) + if (admonitionTitle) { + // If an admonition, then make the whole title block clickable + admonitionTitle.addEventListener('click', toggleClickHandler); + admonitionTitle.dataset.target = toggleID + admonitionTitle.dataset.button = buttonID + } else { + // If not an admonition then we'll listen for the button click + thisButton.addEventListener('click', toggleClickHandler); + } + + // Now hide the item for this toggle button unless explicitly noted to show + if (!item.classList.contains("toggle-shown")) { + toggleHidden(thisButton); + } + } else { + // If not an admonition, wrap the block in a
block + // Define the structure of the details block and insert it as a sibling + var detailsBlock = ` +
+ + ${toggleChevron} + ${toggleHintShow} + +
`; + item.insertAdjacentHTML("beforebegin", detailsBlock); + + // Now move the toggle-able content inside of the details block + details = item.previousElementSibling + details.appendChild(item) + item.classList.add("toggle-details__container") + + // Set up a click trigger to change the text as needed + details.addEventListener('click', (click) => { + let parent = click.target.parentElement; + if (parent.tagName.toLowerCase() == "details") { + summary = parent.querySelector("summary"); + details = parent; + } else { + summary = parent; + details = parent.parentElement; + } + // Update the inner text for the proper hint + if (details.open) { + summary.querySelector("span.toggle-details__summary-text").innerText = toggleHintShow; + } else { + summary.querySelector("span.toggle-details__summary-text").innerText = toggleHintHide; + } + + }); + + // If we have a toggle-shown class, open details block should be open + if (item.classList.contains("toggle-shown")) { + details.click(); + } + } + }) +}; + +// This should simply add / remove the collapsed class and change the button text +var toggleHidden = (button) => { + target = button.dataset['target'] + var itemToToggle = document.getElementById(target); + if (itemToToggle.classList.contains("toggle-hidden")) { + itemToToggle.classList.remove("toggle-hidden"); + button.classList.remove("toggle-button-hidden"); + } else { + itemToToggle.classList.add("toggle-hidden"); + button.classList.add("toggle-button-hidden"); + } +} + +var toggleClickHandler = (click) => { + // Be cause the admonition title is clickable and extends to the whole admonition + // We only look for a click event on this title to trigger the toggle. + + if (click.target.classList.contains("admonition-title")) { + button = click.target.querySelector(".toggle-button"); + } else if (click.target.classList.contains("tb-icon")) { + // We've clicked the icon and need to search up one parent for the button + button = click.target.parentElement; + } else if (click.target.tagName == "polyline") { + // We've clicked the SVG elements inside the button, need to up 2 layers + button = click.target.parentElement.parentElement; + } else if (click.target.classList.contains("toggle-button")) { + // We've clicked the button itself and so don't need to do anything + button = click.target; + } else { + console.log(`[togglebutton]: Couldn't find button for ${click.target}`) + } + target = document.getElementById(button.dataset['button']); + toggleHidden(target); +} + +// If we want to blanket-add toggle classes to certain cells +var addToggleToSelector = () => { + const selector = ""; + if (selector.length > 0) { + document.querySelectorAll(selector).forEach((item) => { + item.classList.add("toggle"); + }) + } +} + +// Helper function to run when the DOM is finished +const sphinxToggleRunWhenDOMLoaded = cb => { + if (document.readyState != 'loading') { + cb() + } else if (document.addEventListener) { + document.addEventListener('DOMContentLoaded', cb) + } else { + document.attachEvent('onreadystatechange', function() { + if (document.readyState == 'complete') cb() + }) + } +} +sphinxToggleRunWhenDOMLoaded(addToggleToSelector) +sphinxToggleRunWhenDOMLoaded(initToggleItems) + +/** Toggle details blocks to be open when printing */ +if (toggleOpenOnPrint == "true") { + window.addEventListener("beforeprint", () => { + // Open the details + document.querySelectorAll("details.toggle-details").forEach((el) => { + el.dataset["togglestatus"] = el.open; + el.open = true; + }); + + // Open the admonitions + document.querySelectorAll(".admonition.toggle.toggle-hidden").forEach((el) => { + console.log(el); + el.querySelector("button.toggle-button").click(); + el.dataset["toggle_after_print"] = "true"; + }); + }); + window.addEventListener("afterprint", () => { + // Re-close the details that were closed + document.querySelectorAll("details.toggle-details").forEach((el) => { + el.open = el.dataset["togglestatus"] == "true"; + delete el.dataset["togglestatus"]; + }); + + // Re-close the admonition toggle buttons + document.querySelectorAll(".admonition.toggle").forEach((el) => { + if (el.dataset["toggle_after_print"] == "true") { + el.querySelector("button.toggle-button").click(); + delete el.dataset["toggle_after_print"]; + } + }); + }); +} diff --git a/additional-topics/index.html b/additional-topics/index.html new file mode 100644 index 0000000..6728f15 --- /dev/null +++ b/additional-topics/index.html @@ -0,0 +1,140 @@ + + + + + + + <no title> — Introduction to CMake documentation + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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+ + + + \ No newline at end of file diff --git a/branch/main/_downloads/1e955aa7952605b36c4491740042f7a7/environment.yml b/branch/main/_downloads/1e955aa7952605b36c4491740042f7a7/environment.yml new file mode 100644 index 0000000..4e10bd7 --- /dev/null +++ b/branch/main/_downloads/1e955aa7952605b36c4491740042f7a7/environment.yml @@ -0,0 +1,15 @@ +name: intro-to-cmake +channels: + - conda-forge +dependencies: + - cffi + - cmake >=3.18 + - compilers + - graphviz + - libblas + - liblapack + - libuuid + - openmpi + - ninja + - pkg-config + - python >=3.8 diff --git a/branch/main/_images/build-systems.svg b/branch/main/_images/build-systems.svg new file mode 100644 index 0000000..67b66a7 --- /dev/null +++ b/branch/main/_images/build-systems.svg @@ -0,0 +1,3 @@ + + +
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PUBLICViewer does not support full SVG 1.1 \ No newline at end of file diff --git a/branch/main/_sources/additional-topics.rst.txt b/branch/main/_sources/additional-topics.rst.txt new file mode 100644 index 0000000..e69de29 diff --git a/branch/main/_sources/cmake-syntax.rst.txt b/branch/main/_sources/cmake-syntax.rst.txt new file mode 100644 index 0000000..6dac2ba --- /dev/null +++ b/branch/main/_sources/cmake-syntax.rst.txt @@ -0,0 +1,311 @@ +.. _cmake-syntax: + + +CMake syntax +============ + + +.. questions:: + + - How can we achieve more control over the build system generated by CMake? + - Is it possible to let the user decide what to generate? + + +.. objectives:: + + - Learn how to define variables with ``set`` and use them with the ``${}`` + operator for `variable references `_. + - Learn the syntax for conditionals in CMake: ``if`` - ``elseif`` - ``else`` - ``endif`` + - Learn the syntax for loops in CMake: ``foreach`` + - Learn how CMake structures build artifacts. + - Learn how to print helpful messages. + - Learn how to handle user-facing options: ``option`` and the role of CMake cache. + + +CMake offers a **domain-specific language** (DSL) to describe how to generate a build system native to the specific platform you might be running on. In this episode, we will get acquainted with its syntax. + + +The CMake DSL +------------- + + +Remember that the DSL is **case-insensitive**. We will now have a look at its main elements. + + +Variables ++++++++++ + + +These are either CMake- or user-defined variables. You can obtain the list of CMake-defined variables with the command: + +.. code-block:: bash + + $ cmake --help-variable-list + +You can create a new variable with the ``set`` command: + +.. signature:: ``set`` + + .. code-block:: cmake + + set( ... [PARENT_SCOPE]) + + +Variables in CMake are always of string type, but certain commands can interpret them as other types. If you want to declare a *list* variable, you will have to provide it as a ;-separated string. Lists can be manipulated with the ``list`` family of commands. + +You can inspect the value of any variable by *dereferencing* it with the ``${}`` operator, as in bash shell. For example, the following snippet sets the content of ``hello`` variable and then prints it: + +.. code-block:: cmake + + set(hello "world") + message("hello ${hello}") + + +Two notes about **variable references**: + +- if the variable within the ``${}`` operator is not set, you will get an empty string. +- you can *nest* variable references: ``${outer_${inner_variable}_variable}``. They will be evaluated from the inside out. + + +One of the most confusing aspects in CMake is the **scoping of variables**. There are three variable scopes in the DSL: + +- **Function**: In effect when a variable is ``set`` within a function, the variable will be visible within the function, but not outside. +- **Directory**: In effect when processing a ``CMakeLists.txt`` in a directory, variables in the parent folder will be available, but any that is ``set`` in the current folder will not be propagated to the parent. +- **Cache**: These variables are **persistent** across calls to ``cmake`` and available to all scopes in the project. Modifying a cache variable requires using a special form of the ``set`` function: + + .. signature:: ``set`` + + .. code-block:: cmake + + set( ... CACHE [FORCE]) + + +Here is a list of few **CMake-defined variables**: + +- ``PROJECT_BINARY_DIR``. This is the build folder for the project. +- ``PROJECT_SOURCE_DIR``. This is the location of the root ``CMakeLists.txt`` in the project. +- ``CMAKE_CURRENT_LIST_DIR``. This is the folder for the ``CMakeLists.txt`` currently being processed. + +Help on a specific built-in variable can be obtained with: + +.. code-block:: bash + + $ cmake --help-variable PROJECT_BINARY_DIR + + +Commands +++++++++ + + +These are provided by CMake and are essential building blocks of the DSL, as they allow you to manipulate variables. They include control flow constructs and the ``target_*`` family of commands. + +You can find a complete list of available commands with: + +.. code-block:: bash + + $ cmake --help-command-list + + +**Functions** and **macros** are built on top of the basic built-in commands and are either CMake- or user-defined. These prove useful to avoid repetition in your CMake scripts. + +The difference between a function and a macro is their *scope*: + +- **Functions** have their own scope: variables defined inside a function are not propagated back to the caller. +- **Macros** do not have their own scope: variables from the parent scope can be modified and new variables in the parent scope can be set. + + +Help on a specific built-in command, function or macro can be obtained with: + +.. code-block:: bash + + $ cmake --help-command target_link_libraries + + +Modules ++++++++ + + +These are collections of functions and macros and are either CMake- or user-defined. CMake comes with a rich ecosystem of modules and you will probably write a few of your own to encapulate frequently used functions or macros in your CMake scripts. + +You will have to include the module to use its contents, for example: + +.. code-block:: cmake + + include(CMakePrintHelpers) + + +The full list of built-in modules is available with: + +.. code-block:: bash + + $ cmake --help-module-list + +Help on a specific built-in module can be obtained with: + +.. code-block:: bash + + $ cmake --help-module CMakePrintHelpers + + + +Flow control +------------ + + +The ``if`` and ``foreach`` commands are available as flow control constructs in the CMake DSL and you are surely familiar with their use in other programming languages. + +Since *all* variables in CMake are strings, the syntax for ``if`` and ``foreach`` appears in a few different variants. + +.. signature:: ``if`` + + .. code-block:: cmake + + if() + # + elseif() # optional block, can be repeated + # + else() # optional block + # + endif() + +The truth value of the conditions in the ``if`` and ``elseif`` blocks is determined by boolean operators. In the CMake DSL: + +- True is any expression evaluating to: ``1``, ``ON``, ``TRUE``, ``YES``, and + ``Y``. +- False is any expression evaluating to: ``0``, ``OFF``, ``FALSE``, ``NO``, + ``N``, ``IGNORE``, and ``NOTFOUND``. + + +CMake offers boolean operator for string comparisons, such as ``STREQUAL`` for string equality, and for version comparisons, such as ``VERSION_EQUAL``. + + +.. callout:: Variable expansions in conditionals + + The ``if`` command expands the contents of variables before evaluating their + truth value. See `official documentation `_ for further details. + + +.. exercise:: Exercise 2: Conditionals in CMake + + Modify the ``CMakeLists.txt`` from the previous exercise to build either a *static* or a *shared* library depending on the value of the boolean ``MAKE_SHARED_LIBRARY``: + + 1. Define the ``MAKE_SHARED_LIBRARY`` variable. + 2. Write a conditional checking the variable. In each branch call ``add_library`` appropriately. + + .. tabs:: + + .. tab:: C++ + + You can find a scaffold project in the ``content/code/02_conditionals-cxx`` folder. A working solution is in the ``solution`` subfolder. + + .. tab:: Fortran + + You can find a scaffold project in the ``content/code/02_conditionals-f`` folder. A working solution is in the ``solution`` subfolder. + + +You can perform the same operation on a collection of items with ``foreach``: + +.. signature:: ``foreach`` + + .. code-block:: cmake + + foreach( ) + # + endforeach() + +The list of items is either space- or ;-separated. ``break()`` and ``continue()`` are also available. + + +.. typealong:: Loops in CMake + + In this typealong, we will show how to use ``foreach`` and lists in CMake. We will work from a scaffold project in the ``content/code/03_loops-cxx`` folder. + + The goal is to compile a library from a bunch of source files: some of them are to be compiled with ``-O3`` optimization level, while some others with ``-O2``. We will set the compilation flags as properties on the library target. Targets and properties will be discussed at greater length in :ref:`targets`. + + A working solution is in the ``solution`` subfolder. + + It is instructive to browse the build folder for the project: + + .. code-block:: bash + + $ tree -L 2 build + + build + ├── CMakeCache.txt + ├── CMakeFiles + │   ├── 3.18.4 + │   ├── cmake.check_cache + │   ├── CMakeDirectoryInformation.cmake + │   ├── CMakeOutput.log + │   ├── CMakeTmp + │   ├── compute-areas.dir + │   ├── geometry.dir + │   ├── Makefile2 + │   ├── Makefile.cmake + │   ├── progress.marks + │   └── TargetDirectories.txt + ├── cmake_install.cmake + ├── compute-areas + ├── libgeometry.a + └── Makefile + + We note that: + + - The project was configured with ``Makefile`` generator. + - The cache is a plain-text file ``CMakeCache.txt``. + - For every target in the project, CMake will create a subfolder ``.dir`` under ``CMakeFiles``. The intermediate object files are stored in these folders, together with compiler flags and link line. + - The build artifacts, ``compute-areas`` and ``libgeometry.a``, are stored at the root of the build tree. + + + +Printing messages +----------------- + +You will most likely have to engage in debugging your CMake scripts at some point. Print-based debugging is the most effective way and the main workhorse for this will be the ``message`` command: + +.. signature:: ``message`` + + .. code-block:: cmake + + message([] "message to display") + +.. parameters:: + + ```` + What type of message to display, for example: + + - ``STATUS``, for incidental information. + - ``FATAL_ERROR``, to report an error that prevents further processing and generation. + + +It should be noted that ``message`` can be a bit awkward to work with, especially when you want to print the name *and* value of a variable. Including the built-in module ``CMakePrintHelpers`` will make your life easier when debugging, since it provides the ``cmake_print_variables`` function: + +.. signature:: ``cmake_print_variables`` + + .. code-block:: cmake + + cmake_print_variables(var1 var2 ... varN) + + This command accepts an arbitrary number of variables and prints their name *and* value to standard output. + For example: + + .. code-block:: cmake + + include(CMakePrintHelpers) + cmake_print_variables(CMAKE_C_COMPILER CMAKE_MAJOR_VERSION DOES_NOT_EXIST) + + gives: + + .. code-block:: text + + -- CMAKE_C_COMPILER="/usr/bin/gcc" ; CMAKE_MAJOR_VERSION="2" ; DOES_NOT_EXIST="" + + + +.. keypoints:: + + - CMake offers a full-fledged DSL which empowers you to write complex ``CMakeLists.txt``. + - Variables have scoping rules. + - The structure of the project is mirrored in the build folder. + + diff --git a/branch/main/_sources/dependencies.rst.txt b/branch/main/_sources/dependencies.rst.txt new file mode 100644 index 0000000..ed2b1de --- /dev/null +++ b/branch/main/_sources/dependencies.rst.txt @@ -0,0 +1,229 @@ +.. _dependencies: + + +Finding and using dependencies +============================== + +.. questions:: + + - How can I use CMake to detect and use the dependencies of my project? + +.. objectives:: + + - Learn how to use ``find_package``. + - Learn what other detection alternatives exist. + +The vast majority of software projects do not happen in a vacuum: they will have +dependencies on existing frameworks and libraries. Good documentation will +instruct your users to ensure that these are satisfied in their programming +environment. The build system is the appropriate place to check that these +preconditions are met and that your project can be built correctly. +In this episode, we will show you few examples of how to detect and use +dependencies in your CMake build system. + +Finding dependencies +-------------------- + +CMake offers a family of commands to find artifacts installed on your system: + +- ``find_file`` to retrieve the full path to a file. +- ``find_library`` to find a library, shared or static. +- ``find_package`` to find and load settings from an external project. +- ``find_path`` to find the directory containing a file. +- ``find_program`` to find an executable. + +The workhorse of dependency discovery is ``find_package``, which will cover your +needs in almost all use cases. + +.. signature:: `find_package `_ + + .. code-block:: cmake + + find_package( [version] [EXACT] [QUIET] [MODULE] + [REQUIRED] [[COMPONENTS] [components...]] + [OPTIONAL_COMPONENTS components...] + [NO_POLICY_SCOPE]) + + This command will attempt finding the package with name ```` by + searching in a number of `predefined folders + `_. + It is possible to ask for a minimum or exact version. If ``REQUIRED`` is + given, a failed search will trigger a fatal error. The rules for the search + are obtained from modules named ``Find.cmake``. + Packages can also have *components* and you can ask to detect just a handful of them. + + +We cannot stress this enough: you should **only** use the other commands in the +``find_`` family in very special, very narrow circumstances. Why so? + +1. For a large selection of common dependencies, the ``Find.cmake`` + modules shipped with CMake work flawlessly and are maintained by the CMake + developers. This lifts the burden of programming your own dependency + detection tricks. +2. ``find_package`` will set up **imported targets**: targets defined *outside* + your project that you can use with your own targets. The properties on + imported targets defines *usage requirements* for the dependencies. A command + such as: + + .. code-block:: cmake + + target_link_libraries(your-target + PUBLIC + imported-target + ) + + will set compiler flags, definitions, include directories, and link libraries + from ``imported-target`` to ``your-target`` *and* to all other targets in + your project that will use ``your-target``. + + +These two points simplify **enormously** the burden of dependency detection and +consistent usage within a multi-folder project. + + +Using ``find_package`` +++++++++++++++++++++++ + +When attempting dependency detection with ``find_package``, you should make sure that: + +- A ``Find.cmake`` module exists, +- Which components, if any, it provides, and +- What imported targets it will set up. + +A complete list of ``Find.cmake`` can be found from the command-line interface: + +.. code-block:: bash + + $ cmake --help-module-list | grep "Find" + +.. typealong:: Using OpenMP + + We want to compile the following OpenMP sample code: [#omp]_ + + + .. literalinclude:: code/xx_taskloop/solution/taskloop.cpp + :language: c++ + + Note the usage of the ``taskloop`` construct, which was introduced in OpenMP + 4.5: we need to make sure our C++ compiler is suitably compatible with *at + least* that version of the standard. + + From the documentation of the ``FindOpenMP.cmake`` module: + + .. code-block:: bash + + $ cmake --help-module FindOpenMP | less + + we find that the module provides the components ``C``, ``CXX``, and + ``Fortran`` and that ``OpenMP::OpenMP_CXX`` target will be provided, if + detection is successful. + Thus, we do the following: + + .. code-block:: cmake + + find_package(OpenMP 4.5 REQUIRED COMPONENTS CXX) + + target_link_libraries(task-loop PRIVATE OpenMP::OpenMP_CXX) + + We can configure and build verbosely. [#verbose]_ + Notice that compiler flags, include directories, and link libraries are properly resolved by CMake. + + You can find the complete working example in ``content/code/xx_taskloop/solution``. + +.. exercise:: Exercise 23: Using MPI + + In this exercise, you will attempt compiling a "Hello, world" program that + uses the message passing interface (MPI). + + 1. Check whether a ``FindMPI.cmake`` module exists in the built-in module + library. + 2. Get acquainted with its components and the variables and imported targets + it defines. + + .. tabs:: + + .. tab:: C++ + + The scaffold project is in ``content/code/xx_mpi-cxx``. + + #. Compile the source file to an executable. + #. Link against the MPI imported target. + #. Invoke a verbose build and observe how CMake compiles and links. + + A working example is in the ``solution`` subfolder. + + .. tab:: Fortran + + The scaffold project is in ``content/code/xx_mpi-f``. + + #. Compile the source file to an executable. + #. Link against the MPI imported target. + #. Invoke a verbose build and observe how CMake compiles and links. + + A working example is in the ``solution`` subfolder. + + +Alternatives: ``Config`` scripts and ``pkg-config`` ++++++++++++++++++++++++++++++++++++++++++++++++++++ + +What to do when there is no built-in ``Find.cmake`` module for a package you depend on? +The package developers might be already prepared to help you out: + +- They ship the CMake-specific file ``Config.cmake`` which + describes how the imported target should be made for their package. + In this case, you need to point CMake to the folder containing the ``Config`` file using the + special ``_DIR`` variable: + + .. code-block:: bash + + $ cmake -S. -Bbuild -D_DIR=/folder/containing/Config.cmake + +- They include a ``.pc`` file, which, on Unix-like platforms, can be detected + with the ``pkg-config`` utility. You can then leverage ``pkg-config`` through CMake: + + .. code-block:: cmake + + # find pkg-config + find_package(PkgConfig REQUIRED) + # ask pkg-config to find the UUID library and prepare an imported target + pkg_search_module(UUID REQUIRED uuid IMPORTED_TARGET) + # use the imported target + if(TARGET PkgConfig::UUID) + message(STATUS "Found libuuid") + endif() + + This was the strategy adopted in :ref:`probing` when testing the use of the + UUID library. + + +.. keypoints:: + + - CMake has a rich ecosystem of modules for finding software dependencies. They are called ``Find.cmake``. + - The ``Find.cmake`` modules are used through ``find_package()``. + - You can also use the classic Unix tool ``pkg-config`` to find software + dependencies, but this is not as robust as the CMake-native + ``Find`` modules. + + + +.. rubric:: Footnotes + +.. [#omp] + + Example adapted from page 85 in `OpenMP 4.5 examples + `_. + +.. [#verbose] + + The way in which to trigger a verbose build depends on the native build tool you are using. + For Unix Makefiles: + + .. code-block:: bash + + $ cmake --build build -- VERBOSE=1 + + For Ninja: + + .. code-block:: bash + + $ cmake --build build -- -v diff --git a/branch/main/_sources/guide.rst.txt b/branch/main/_sources/guide.rst.txt new file mode 100644 index 0000000..89553fb --- /dev/null +++ b/branch/main/_sources/guide.rst.txt @@ -0,0 +1,37 @@ +Instructor's guide +================== + +Why we teach this lesson +------------------------ + + + +Intended learning outcomes +-------------------------- + + + +Timing +------ + + + +Preparing exercises +------------------- + +e.g. what to do the day before to set up common repositories. + + + +Other practical aspects +----------------------- + + + +Interesting questions you might get +----------------------------------- + + + +Typical pitfalls +---------------- diff --git a/branch/main/_sources/hello-cmake.rst.txt b/branch/main/_sources/hello-cmake.rst.txt new file mode 100644 index 0000000..5667802 --- /dev/null +++ b/branch/main/_sources/hello-cmake.rst.txt @@ -0,0 +1,310 @@ +.. _hello-cmake: + + +From sources to executables +=========================== + +.. questions:: + + - How do we use CMake to compile source files to executables? + +.. objectives:: + + - Learn what tools are available in the CMake suite. + - Learn how to write a simple ``CMakeLists.txt``. + - Learn the difference between **build systems**, **build tools**, and **build system generator**. + - Learn to distinguish between *configuration*, *generation*, and **build* time. + + + +What is CMake and why should you care? +-------------------------------------- + +Software is everywhere and so are build systems. Whenever you run a piece of software, anything from calendar apps to computationally-intensive programs, there was a build system involved in transforming the plain-text source code into binary files that could run on the device you are using. + +CMake is a **build-system generator**: it provides a family of tools and a *domain-specific language* (DSL) to **describe** what the build system should achieve when the appropriate build tools are invoked. The DSL is platform- *and* compiler-agnostic: you can reuse the same CMake scripts to obtain **native** build systems on any platform. + + +.. figure:: img/build-systems.svg + :align: center + + On GNU/Linux, the native build system will be a collection of ``Makefile``-s. The ``make`` build tool uses these ``Makefile``-s to transform sources to executables and libraries. + + CMake abstracts the process of generating the ``Makefile``-s away into a generic DSL. + + +A CMake-based build system: + +- can bring your software closer to being platform- *and* compiler-agnostic. +- has good support within many integrated development environments (IDEs). +- automatically tracks and propagates internal dependencies in your project. +- is built on top of well-maintained functionality for automated dependency detection. + + +Hello, CMake! +------------- + + +.. typealong:: Compiling "Hello, world" with CMake + + We will now proceed to compile a single source file to an executable. Choose your favorite language and start typing along! + + .. tabs:: + + .. tab:: C++ + + You can find the file with the complete source code in the + ``content/code/00_hello-cxx`` folder. + + .. literalinclude:: code/00_hello-cxx/hello.cpp + :language: c++ + + A working solution is in the ``solution`` subfolder. + + .. tab:: Fortran + + You can find the file with the complete source code in the + ``content/code/00_hello-f`` folder. + + .. literalinclude:: code/00_hello-f/hello.f90 + :language: fortran + + A working solution is in the ``solution`` subfolder. + + 1. The folder contains only the source code. We need to add a file called ``CMakeLists.txt`` to it. CMake reads the contents of these special files when generating the build system. + + 2. The first thing we will do is declare the requirement on minimum version of CMake: + + .. code-block:: cmake + + cmake_minimum_required(VERSION 3.18) + + 3. Next, we declare our project and its programming language: + + .. code-block:: cmake + + project(Hello LANGUAGES CXX) + + 4. We create an *executable target*. CMake will generate rules in the build system to compile and link our source file into an executable: + + .. code-block:: cmake + + add_executable(hello hello.cpp) + + 5. We are ready to call CMake and get our build system: + + .. code-block:: bash + + $ cmake -S. -Bbuild + + 6. And finally build our executable: + + .. code-block:: bash + + $ cmake --build build + + +Important issues for the ``CMakeLists.txt`` file +------------------------------------------------ + + +1. Any CMake build system will invoke the following commands in its **root** + ``CMakeLists.txt``: + + .. signature:: ``cmake_minimum_required`` + + .. code-block:: cmake + + cmake_minimum_required(VERSION [...] [FATAL_ERROR]) + + .. parameters:: + + ``VERSION``: Minimum and, optionally, maximum version of CMake to use. + + ``FATAL_ERROR``: Raise a fatal error if the version constraint is not satisfied. This option is ignored by CMake >=2.6 + + .. signature:: ``project`` + + .. code-block:: cmake + + project( + [VERSION [.[.[.]]]] + [DESCRIPTION ] + [HOMEPAGE_URL ] + [LANGUAGES ...]) + + .. parameters:: + + ````: The name of the project. + + ``LANGUAGES``: Languages in the project. + + +2. The case of CMake commands does not matter: the DSL is case-insensitive. However, the plain-text files that CMake parses **must be called** ``CMakeLists.txt`` and the case matters! The variable names are also case sensitive! + + +3. The command to add executables to the build system is ``add_executable``: + + .. signature:: ``add_executable`` + + .. code-block:: cmake + + add_executable( [WIN32] [MACOSX_BUNDLE] + [EXCLUDE_FROM_ALL] + [source1] [source2 ...]) + + +4. Using CMake you can abstract the generation of the build system and also the invocation of the build tools. + +.. callout:: Put your ``CMakeLists.txt`` under version control + + All CMake-related files will evolve together with your codebase. It's a good idea to put them under version control. On the contrary, any of the *generated* native build-system files, *e.g.* ``Makefile``-s, should not be version-controlled. + + +.. typealong:: The command-line interface to CMake + + Let us get acquainted with the CMake and especially its command-line interface. + + We can get help at any time with the command + + .. code-block:: bash + + $ cmake --help + + This will output quite a number of options to your screen. We can analyze the last few lines first: + + .. code-block:: text + + Generators + + The following generators are available on this platform (* marks default): + * Unix Makefiles = Generates standard UNIX makefiles. + Green Hills MULTI = Generates Green Hills MULTI files. + Ninja = Generates build.ninja files. + Ninja Multi-Config = Generates build-.ninja files. + Watcom WMake = Generates Watcom WMake makefiles. + CodeBlocks - Ninja = Generates CodeBlocks project files. + CodeBlocks - Unix Makefiles = Generates CodeBlocks project files. + CodeLite - Ninja = Generates CodeLite project files. + CodeLite - Unix Makefiles = Generates CodeLite project files. + Sublime Text 2 - Ninja = Generates Sublime Text 2 project files. + Sublime Text 2 - Unix Makefiles = Generates Sublime Text 2 project files. + Kate - Ninja = Generates Kate project files. + Kate - Unix Makefiles = Generates Kate project files. + Eclipse CDT4 - Ninja = Generates Eclipse CDT 4.0 project files. + Eclipse CDT4 - Unix Makefiles = Generates Eclipse CDT 4.0 project files. + + In CMake terminology, the native build scripts and build tools are called **generators**. On any particular platform, the list will show which native build tools can be used through CMake. They can either be "plain", such as ``Makefile``-s or Ninja, or IDE-like projects. + + The ``-S`` switch specifies which source directory CMake should scan: this is the folder containing the *root* ``CMakeLists.txt``, *i.e.*, the one containing the |project| command. By default, CMake will allow *in-source* builds, *i.e.* storing build artifacts alongside source files. This is **not** good practice: you should always keep build artifacts from sources separate. Fortunately, the ``-B`` switch helps with that, as it is used to give where to store build artifacts, including the generated build system. This is the minimal invocation of ``cmake``: + + .. code-block:: bash + + $ cmake -S. -Bbuild + + To switch to another generator, we will use the ``-G`` switch: + + .. code-block:: bash + + $ cmake -S. -Bbuild -GNinja + + Options to be used at build-system generation are passed with the ``-D`` switch. For example, to change compilers: + + .. code-block:: bash + + $ cmake -S. -Bbuild -GNinja -DCMAKE_CXX_COMPILER=clang++ + + Finally, you can access to the full CMake manual with: + + .. code-block:: bash + + $ cmake --help-full + + You can also inquire about a specific module, command or variable: + + .. code-block:: bash + + $ cmake --help-variable CMAKE_GENERATOR + + +A complete toolchain +-------------------- + + +The family of tools provided with CMake offers a complete toolchain to manage the development cycle: from sources to build artifacts, testing, and deployment. +We refer to these stages as *CMake times* and each tool is appropriate at a specific time. In this workshop, we will discuss: + +- **CMake time** or **configure time**. This is the stage when ``cmake`` is invoked to parse the ``CMakeLists.txt`` in your project, configure and generate the build system. +- **Build time**. This is handled by the native build tools, but, as we have seen, these can be effectively wrapped by ``cmake`` itself. +- **CTest time** or **test time**. At this stage, you will test your build artifacts. + +.. figure:: img/cmake-times.jpg + :align: center + + You can manage all these stages of a software project's lifetime with tools provided by CMake. This figure shows all these stages (*times*) and which tool is appropriate for each. This figure is reproduced from `CMake Cookbook `_ and is licensed under the terms of the `CC-BY-SA `_. + + +Producing libraries +------------------- + +CMake can of course be used to produce libraries as well as executables. The relevant command is ``add_library``: + +.. signature:: ``add_library`` + + .. code-block:: cmake + + add_library( [STATIC | SHARED | MODULE] + [EXCLUDE_FROM_ALL] + [...]) + +You can link libraries into executables with ``target_link_libraries``: + +.. signature:: ``target_link_libraries`` + + .. code-block:: cmake + + target_link_libraries( + ... + [ ...]...) + +.. callout:: Executables and libraries are targets + + We will encounter the term **target** repeatedly. In CMake, a target is any object given as first argument to ``add_executable`` or ``add_library``. Targets are the basic atom in CMake. Whenever you will need to organize complex projects, think in terms of its targets and their mutual dependencies. + + The whole family of CMake commands ``target_*`` can be used to express chains of dependencies and is much more effective than keeping track of state with variables. We will clarify these concepts in :ref:`targets`. + + +.. exercise:: Exercise 1: Producing libraries + + .. tabs:: + + .. tab:: C++ + + You can find a scaffold project in the ``content/code/01_libraries-cxx`` folder. + + #. Write a ``CMakeLists.txt`` to compile the source files ``Message.hpp`` and ``Message.cpp`` into a library. **DO NOT** specify the type of library, shared or static, explicitly. + #. Add an executable from the ``hello-world.cpp`` source file. + #. Link the library into the executable. + + A working solution is in the ``solution`` subfolder. + + .. tab:: Fortran + + You can find a scaffold project in the ``content/code/01_libraries-f`` folder. + + #. Write a ``CMakeLists.txt`` to compile the source files ``message.f90`` into a library. **DO NOT** specify the type of library shared or static, explicitly. + #. Add an executable from the ``hello-world.f90`` source file. + #. Link the library into the executable. + + A working solution is in the ``solution`` subfolder. + + What kind of library did you get? Static or shared? + + +.. keypoints:: + + - CMake is a **build system generator**, not a build system. + - You write ``CMakeLists.txt`` to describe how the build tools will create artifacts from sources. + - You can use the CMake suite of tools to manage the whole lifetime: from source files to tests to deployment. + - The structure of the project is mirrored in the build folder. + diff --git a/branch/main/_sources/index.rst.txt b/branch/main/_sources/index.rst.txt new file mode 100644 index 0000000..92ab152 --- /dev/null +++ b/branch/main/_sources/index.rst.txt @@ -0,0 +1,168 @@ +Introduction to CMake +===================== + + +CMake is a language-agnostic, cross-platform build tool and is nowadays the *de facto* standard, with large projects using it to reliably build, test, and deploy their codebases. + +CMake is not a build system itself, but it generates another system's build files. + +In this workshop, you will learn + +- Write a CMake build system for C/C++ and Fortran projects producing libraries and/or executables. +- Run tests for your code with `CTest`. +- Ensure your build system will work on different platforms. +- (optional) Detect and use external dependencies in your project. +- (optional) Safely and effectively build mixed-language projects (Python+C/C++, Python+Fortran, Fortran+C/C++) + + + +.. prereq:: + + Before attending this workshop, please make sure that you have access to a computer with a compiler for your favorite programming language and a recent version of CMake. + + If you have access to a supercomputer (e.g. a `NAISS system `_) with a compute allocation you can use that during the workshop. Any questions on how to use a particular HPC resource should be directed to the appropriate support desk. + + You can also use your own computer for this workshop, provided that it has the necessary tools installed. + + - If you do not already have these installed, we recommend that you set up an isolated software environment using ``conda``. + - For Windows computers we recommend to use the **Windows Subsystem for Linux (WSL)**. Detailed instructions can be found on the :doc:`setup` page. + + +.. toctree:: + :hidden: + :maxdepth: 1 + + setup + + +.. toctree:: + :hidden: + :maxdepth: 1 + :caption: The lesson + + hello-cmake + cmake-syntax + hello-ctest + probing + dependencies + targets + .. dependencies + .. fetch-content + .. python-bindings + tips-and-tricks + additional-topics + + +.. toctree:: + :hidden: + :maxdepth: 1 + :caption: Additional topics + + .. environment + .. cxx-fortran + + +.. csv-table:: + :widths: auto + :delim: ; + + 20 min ; :doc:`hello-cmake` + 30 min ; :doc:`cmake-syntax` + 30 min ; :doc:`probing` + 20 min ; :doc:`dependencies` + 40 min ; :doc:`targets` + 10 min ; :doc:`tips-and-tricks` + 10 min ; :doc:`additional-topics` + + +.. toctree:: + :maxdepth: 1 + :caption: Reference + + quick-reference + zbibliography + guide + + + +.. _learner-personas: + + + +Who is the course for? +---------------------- + +This course is for students, researchers, engineers, and programmers that have heard of `CMake `_ and want to learn how to use it effectively with projects they are working on. +This course assumes no previous experience with `CMake `_. You will have to be familiar with the tools commonly used to build software in your compiled language of choice (C/C++ or Fortran). + +Specifically, this lesson assumes that participants have some prior experience with or knowledge of the following topics (but no expertise is required): + +- Compiling and linking executables and libraries. +- Differences between shared and static libraries. +- Automated testing. + + + +About this course +----------------- + +This lesson material is originally developed by the `EuroCC National Competence Center Sweden (ENCCS) `_ and taught in the `CMake Workshop `_. +Each lesson episode has clearly defined learning objectives and includes multiple exercises along with solutions, and is therefore also useful for self-learning. + +This material `Introduction to CMake `_ was adapted from the material used for `CMake Workshop `_ and will be use for the `Build Systems Course and Hackathon `_. + +The lesson material is licensed under `CC-BY-4.0 `_ and can be reused in any form (with appropriate credit) in other courses and workshops. Instructors who wish to teach this lesson can refer to the :doc:`guide` for practical advice. + + + +Outreach +-------- + +There are many free online resources regarding CMake: + +- The `CMake official documentation `_. +- The `CMake tutorial `_. +- The `HEP Software Foundation `_ training course. +- The `Building portable code with CMake `_ from the `CodeRefinery `_. + + +You can also consult the following books: + +- **Professional CMake: A Practical Guide** by Craig Scott. +- **CMake Cookbook** by Radovan Bast and Roberto Di Remigio. The accompanying repository is on `GitHub `_ + + + +Credits +------- + +The lesson file structure and browsing layout is inspired by and derived from the `work `_ by `CodeRefinery `_ licensed under the `MIT license `_. We have copied and adapted most of their license text. + + + +Instructional Material +^^^^^^^^^^^^^^^^^^^^^^ + +All ENCCS instructional material is made available under the `Creative Commons Attribution license (CC-BY-4.0) `_. The following is a human-readable summary of (and not a substitute for) the `full legal text of the CC-BY-4.0 license `_. You are free: + +- to **share** - copy and redistribute the material in any medium or format; +- to **adapt** - remix, transform, and build upon the material for any purpose, even commercially. + + +The licensor cannot revoke these freedoms as long as you follow these license terms: + +- **Attribution** - You must give appropriate credit (mentioning that your work is derived from work that is Copyright (c) ENCCS and, where practical, linking to ``_), provide a `link to the license `_, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. +- **No additional restrictions** - You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits. With the understanding that: + + - You do not have to comply with the license for elements of the material in the public domain or where your use is permitted by an applicable exception or limitation. + - No warranties are given. The license may not give you all of the permissions necessary for your intended use. For example, other rights such as publicity, privacy, or moral rights may limit how you use the material. + + + +Software +^^^^^^^^ + +The code samples and exercises in this lesson were adapted from the GitHub repository for the `CMake Cookbook `_. + +Except where otherwise noted, the example programs and other software provided by ENCCS are made available under the `OSI `_-approved `MIT license `_. + diff --git a/branch/main/_sources/probing.rst.txt b/branch/main/_sources/probing.rst.txt new file mode 100644 index 0000000..2652f06 --- /dev/null +++ b/branch/main/_sources/probing.rst.txt @@ -0,0 +1,220 @@ +.. _probing: + + +Probing compilation, linking, and execution +=========================================== + +.. questions:: + + - How can you add custom steps to your build system with CMake? + +.. objectives:: + + - Learn how and when to use ``execute_process`` + - Learn how to use ``add_custom_command`` with targets. + - Learn how to test compilation, linking, and execution. + + +CMake lets you run arbitrary commands at any stage in the project lifecycle. +This is yet another mechanism for fine-grained customization and we will discuss +some of the options in this episode. + + +Running custom commands at *configure-time* +------------------------------------------- + +The most straightforward method is to explicitly run one (or more) child +process(es) when invoking the ``cmake`` command. This is achieved with the +``execute_process`` command. + +.. signature:: `execute_process `_ + + .. code-block:: cmake + + execute_process(COMMAND [args1...]] + [COMMAND [args2...] [...]] + [WORKING_DIRECTORY ] + [TIMEOUT ] + [RESULT_VARIABLE ] + [RESULTS_VARIABLE ] + [OUTPUT_VARIABLE ] + [ERROR_VARIABLE ] + [INPUT_FILE ] + [OUTPUT_FILE ] + [ERROR_FILE ] + [OUTPUT_QUIET] + [ERROR_QUIET] + [OUTPUT_STRIP_TRAILING_WHITESPACE] + [ERROR_STRIP_TRAILING_WHITESPACE] + [ENCODING ]) + + Executes one or more child processes. The standard output and standard error + streams are recorded into ``OUTPUT_VARIABLE`` and ``ERROR_VARIABLE``, + respectively. The result of the last child process is saved into + ``RESULT_VARIABLE``. + + +It is important to note that any command invoked through ``execute_process`` +will only be run at **configure-time**, *i.e.* when running the ``cmake`` +command. You **should not** rely on ``execute_process`` to update any artifacts at +**build-time**. + + +.. exercise:: Exercise xx: Find a Python module + + In this exercise, we'll use `execute_process `_ + to check whether the `cffi `_ Python module is + installed in your environment. On the command line, you would do: + + .. code-block:: bash + + $ python -c "import cffi; print(cffi.__version__)" + + Your goal is to replicate the same in CMake. + The scaffold code is in ``content/code/xx_find_cffi``. + You will have to modify the call to ``execute_process`` to run the command above. + + A working example is in the ``solution`` subfolder. + +Note the use of ``find_package(Python REQUIRED)`` to obtain the ``python`` +executable. CMake comes with many modules dedicated to the detection of +dependencies, such as Python. These are conventionally called +``Find.cmake`` and you can inspect their documentation with: + +.. code-block:: bash + + $ cmake --help-module FindPython | more + +We will revisit uses of ``find_package`` later on in :ref:`dependencies`. + + +Custom commands for your targets +-------------------------------- + +As mentioned, the main problem of ``execute_process`` is that it will run a +command at *configure-time*, when the ``cmake`` command is first invoked. +It is thus *not* a viable alternative if we intend to perform some specific +actions depending on targets or make the result of the custom commands a +dependency for other targets. +Both cases have real-world examples, such as when using automatically generated +code. The CMake command ``add_custom_command`` can be used in some of this +instances. + +.. signature:: `add_custom_command `_ + + .. code-block:: cmake + + add_custom_command(TARGET + PRE_BUILD | PRE_LINK | POST_BUILD + COMMAND command1 [ARGS] [args1...] + [COMMAND command2 [ARGS] [args2...] ...] + [BYPRODUCTS [files...]] + [WORKING_DIRECTORY dir] + [COMMENT comment] + [VERBATIM] [USES_TERMINAL]) + + Add one or more custom commands to a target, such as a library or an + executable. The commands can be executed before linking (with ``PRE_BUILD`` + and ``PRE_LINK``) or after (with ``POST_BUILD``) + + +.. exercise:: Exercise 18: Before and after build + + We want to perform some action before and after building a target, in this case a Fortran executable: + + - Before building, we want to read the link line, as produced by CMake, and + echo it to standard output. We use the ``echo-file.py`` Python script. + - After building, we want to check the size of the static allocations in the + binary, by invoking the ``size`` command. We use the ``static-size.py`` Python script. + + The scaffold code is in ``content/code/xx_pre_post-f``. + + #. Add CMake commands to build the ``example`` executable from the Fortran + sources. Find the text file with the link line under the build folder. + Hint: have a look in ``CMakeFiles`` and keep in mind the name you gave to + the target. + #. Call ``add_custom_command`` with ``PRE_LINK`` to invoke the ``echo-file.py`` Python script. + #. Call ``add_custom_command`` with ``POST_BUILD`` to invoke the ``static-size.py`` Python script. + + A working example is in the ``solution`` subfolder. + + +Testing compilation, linking, and execution +------------------------------------------- + +We also want to be able to run checks on our compilers and linkers. Or check whether a certain library can be used correctly before attempting to build our own artifacts. +CMake provides modules and commands for these purposes: + +- ``CheckCompilerFlag`` providing the ``check__compiler_flag`` + function, to check whether a compiler flag is valid for the compiler in use. +- ``CheckSourceCompiles`` providing the ``check__source_compiles``. + Which check whether a given source file compiles with the compiler in use. +- ``CheckSourceRuns`` providing the ``check__source_runs``, to make + sure that a given source snippet compiles, links, and runs. + +In all cases, ```` can be one of ``CXX``, ``C`` or ``Fortran``. + +.. exercise:: Exercise 19: Check that a compiler accepts a compiler flag + + Compilers evolve: they add and/or remove flags and sometimes you will face + the need to test whether some flags are available before using them in your + build. + + The scaffold code is in ``content/code/xx_check_compiler_flag``. + + #. Implement a ``CMakeLists.txt`` to build an executable from the + ``asan-example.cpp`` source file. + #. Check that the address sanitizer flags are available with + ``check_cxx_compiler_flag``. The flags to check are ``-fsanitize=address + -fno-omit-frame-pointer``. Find the command signature with: + + .. code-block:: bash + + $ cmake --help-module CMakeCXXCompilerFlag + + #. If the flags do work, add them to the those used to compile the executable + target with ``target_compile_options``. + + A working example is in the ``solution`` subfolder. + + +.. exercise:: Exercise 20: Testing runtime capabilities + + Testing that some features will work properly for your code requires not only + compiling an object files, but also linking an executable and running it + successfully. + + The scaffold code is in ``content/code/xx_check_source_runs``. + + #. Create an executable target from the source file ``use-uuid.cpp``. + #. Add a check that linking against the library produces working executables. + Use the following C code as test: + + .. code-block:: c + + #include + + int main(int argc, char * argv[]) { + uuid_t uuid; + uuid_generate(uuid); + return 0; + } + + ``check_c_source_runs`` requires the test source code to be passed in as + a *string*. Find the command signature with: + + .. code-block:: bash + + $ cmake --help-module CheckCSourceRuns + + #. If the test is successful, link executable target against the UUID + library: use the ``PkgConfig::UUID`` target as argument to + ``target_link_libraries``. + + A working example is in the ``solution`` subfolder. + + +.. keypoints:: + + - You can customize the build system by executing custom commands. + - CMake offers commands to probe compilation, linking, and execution. diff --git a/branch/main/_sources/quick-reference.rst.txt b/branch/main/_sources/quick-reference.rst.txt new file mode 100644 index 0000000..492da1e --- /dev/null +++ b/branch/main/_sources/quick-reference.rst.txt @@ -0,0 +1,2 @@ +Quick Reference +=============== diff --git a/branch/main/_sources/setup.rst.txt b/branch/main/_sources/setup.rst.txt new file mode 100644 index 0000000..6ac98e5 --- /dev/null +++ b/branch/main/_sources/setup.rst.txt @@ -0,0 +1,46 @@ +Setting up your system +====================== + + +In order to follow this workshop, you will need access to compilers, Python and CMake. You can use an HPC cluster if you have access to one, but the instructions here cover how to install the prerequisites on your own computer. + +We also show how you can use `Binder +`_ to run in the cloud. + +These instructions are based on installing compilers and CMake via the `Conda package and environment manager `_, as it provides a convenient way to install binary packages in an isolated software environment. + + +For Windows users +----------------- + + +We strongly recommend to use (and install if necessary) the **Windows Subsystem for Linux (WSL)** as it is a powerful tool which will likely be useful also after the workshop. Inside WSL you will need Python 3 and the conda environment manager. A useful guide to doing this is found at `HERE `_. The installation of the required dependencies in a WSL terminal is documented below. + + +For MacOS and Linux users +------------------------- + + +MacOS and Linux users can simply open a terminal and install +`Miniconda `_: + +- For MacOS see `HERE `_. +- For Linux see `HERE `_. + + +Creating an environment and installing packages +----------------------------------------------- + + +Once you have ``conda`` installed (and ``WSL`` if you're using Windows OS) you can use the :download:`environment.yml <../environment.yml>` file to install dependencies. + +First save it to your hard drive by clicking the link, and then in a terminal navigate to where you saved the file and type:: + + conda env create -f environment.yml + +You then need to activate the new environment by:: + + conda activate intro-to-cmake + +Now you should have CMake, compilers, Python and a few other packages installed! + diff --git a/branch/main/_sources/targets.rst.txt b/branch/main/_sources/targets.rst.txt new file mode 100644 index 0000000..6fe1505 --- /dev/null +++ b/branch/main/_sources/targets.rst.txt @@ -0,0 +1,291 @@ +.. _targets: + + +Target-based build systems with CMake +===================================== + + +.. questions:: + + - How can we handle more complex projects with CMake? + - What exactly are **targets** in the CMake domain-specific language (DSL)? + +.. objectives:: + + - Learn that the **basic elements** in CMake are not variables, but targets. + - Learn about properties of targets and how to use them. + - Learn how to use *visibility levels* to express dependencies between targets. + - Learn how to work with projects spanning multiple folders. + - Learn how to handle multiple targets in one project. + + +Real-world projects require more than compiling a few source files into executables and/or libraries. In most cases, you will come to projects comprising hundreds of source files sprawling in a complex source tree. + + +With the advent of CMake 3.0, also known as **Modern CMake**, there has been a significant shift that the CMake domain-specific language (DSL) is structured, which can help you keep the complexity of the build system in check. Rather than relying on **variables** to convey information in a project, all what you need in modern CMake is **targets** and **properties**. + + + +Targets +------- + + +A target is the basic element in the CMake DSL, which can be declared by either ``add_executable`` or ``add_library``. Any target has a collection of **properties**, which define: + +* *how* the build artifact should be produced, +* *how* it should be used by other targets in the project that depend on it. + + +.. figure:: img/target.svg + :align: center + + Compile options, definitions, include directories, source files, link libraries, and link options are properties of targets. These properties can be read with ``get_target_property`` and modified with ``set_target_properties``. + + + +In CMake, the five most used commands used to handle targets are: + +- ``target_sources``, specifying which source files to use when compiling a target. +- ``target_compile_options``, specifying which compiler flags to use. +- ``target_compile_definitions``, specifying which compiler definitions to use. +- ``target_include_directories``, specifying which directories will contain header (for C/C++) and module (for Fortran) files. +- ``target_link_libraries``, specifying which libraries to link into the current target. + + +There are additional commands in the ``target_*`` family: + +.. code-block:: bash + + $ cmake --help-command-list | grep "^target_" + + target_compile_definitions + target_compile_features + target_compile_options + target_include_directories + target_link_directories + target_link_libraries + target_link_options + target_precompile_headers + target_sources + + + +Visibility levels +----------------- + + +Why it is robust to use targets and properties than using variables? Given a target ``tgtX``, we can invoke one command in the ``target_*`` family as follows. + +.. code-block:: cmake + + target_link_libraries(tgtX + PRIVATE tgt1 + INTERFACE tgt2 + PUBLIC tgt3 + ) + + +.. figure:: img/target_inheritance.svg + :align: center + + Properties on targets have varied **visibility levels**, which determine how CMake should propagate them between interdependent targets. + + + +.. callout:: Understanding visibility levels + + + Visibility levels ``PRIVATE``, ``PUBLIC``, or ``INTERFACE`` are very powerful and herein we will briefly demonstrate their difference. + + In this demo, we split the source code into 3 libraries and all files are available in the ``content/code/xx_visibility-levels/`` folder. + + .. code-block:: bash + + . + ├── CMakeLists.txt + ├── greeting + │   ├── greeting.cpp + │   └── greeting.hpp + ├── hello_world + │   ├── hello_world.cpp + │   └── hello_world.hpp + ├── main.cpp + └── world + ├── world.cpp + └── world.hpp + + +In this source code, the main function links to greeting which links to hello_world which links to world. + + +.. typealong:: The internal dependency tree + + If you have installed ``Graphviz``, you can visualize the dependencies between these targets: + + .. code-block:: console + + $ cd build + $ cmake --graphviz=project.dot .. + $ dot -T svg project.dot -o graphviz-greeting-hello-world.svg + + .. figure:: img/graphviz-greeting-hello-world.svg + :align: center + + The dependencies between the four targets in the code example. + + + +Take a look at the ``CMakeLists.txt``: + + +.. literalinclude:: code/xx_visibility-levels/CMakeLists.txt + :language: cmake + :linenos: + :emphasize-lines: 17 + + +.. exercise:: Testing the 3 different visibility levels + + 1. Browse, configure, build, and run the code. + + 2. Uncomment the highlighted line (line 17) with ``target_compile_definitions``, configure into a fresh folder, and build using the commands below. You will see that the definition is used in ``world.cpp`` but nowhere else. + + .. code-block:: console + + $ cmake -S. -Bbuild_private + $ cmake --build build_private + + 3. Change the definition to ``PUBLIC``, configure into a fresh folder, and build. You will see that the definition is used both in ``world.cpp`` and ``hello_world.cpp``. + + .. code-block:: console + + $ cmake -S. -Bbuild_public + $ cmake --build build_public + + 4. Then change the definition to ``INTERFACE``, configure into a fresh folder, and build. You will see that the definition is used only in ``hello_world.cpp`` but not in ``world.cpp``. + + .. code-block:: console + + $ cmake -S. -Bbuild_interface + $ cmake --build build_interface + + + +Properties +---------- + + +CMake lets you set properties at many different levels of visibility across the project: + +- **Global scope**. These are equivalent to variables set in the root ``CMakeLists.txt``. Their use is, however, more powerful as they can be set from *any* leaf ``CMakeLists.txt``. +- **Directory scope**. These are equivalent to variables set in a given leaf ``CMakeLists.txt``. +- **Target**. These are the properties set on targets that we discussed above. +- **Test**. +- **Source files**. For example, compiler flags. +- **Cache entries**. +- **Installed files**. + + +For a complete list of properties known to CMake: + +.. code-block:: bash + + $ cmake --help-properties | less + + +You can get the current value of any property with ``get_property`` and set the value of any property with ``set_property``. + + + +Multiple folders +---------------- + + +In the code example about the visibility levels, we have split a project into three folders and libraries but we kept one ``CMakeLists.txt``. As the project grows, this becomes impractical for humans (the CMake computer overlords will not mind) and maintenance becomes easier if we split the CMake configuration into multiple ``CMakeLists.txt`` with the help of ``add_subdirectory``. Our goal is to have a ``CMakeLists.txt`` as close as possible to the source files. + +.. code-block:: text + + project/ + ├── CMakeLists.txt <--- Root + ├── external + │   ├── CMakeLists.txt <--- Leaf at level 1 + └── src +    ├── CMakeLists.txt <--- Leaf at level 1 +    ├── evolution +    │   ├── CMakeLists.txt <--- Leaf at level 2 +    ├── initial +    │   ├── CMakeLists.txt <--- Leaf at level 2 +    ├── io +    │   ├── CMakeLists.txt <--- Leaf at level 2 +    └── parser + └── CMakeLists.txt <--- Leaf at level 2 + + +Each folder in a multi-folder project will contain a ``CMakeLists.txt``: a source tree with one **root** and many **leaves**. + +- The root ``CMakeLists.txt`` will contain the invocation of the ``project`` command: variables and targets declared in the root have effectively global scope. +- The ``PROJECT_SOURCE_DIR`` will point to the folder containing the root ``CMakeLists.txt``. +- In order to move between the root and a leaf or between leaves, you will use the ``add_subdirectory`` command. + + +Typically, you only need to pass the first argument: the folder within the build tree will be automatically computed by CMake. We can declare targets at any level, not necessarily the root: a target is visible at the level at which it is declared and all higher levels. + + + +.. exercise:: Exercise yy: Cellular automata + + Let's work with a project spanning multiple folders. We will implement a relatively simple code to compute and print to screen elementary `cellular automata `_. We separate the sources into ``src`` and ``external`` to simulate a nested project which reuses an external project. + + Your goal is to: + + - 1. Build the main executable at ``content/code/yy_automata-cxx/`` for C++ and ``content/code/yy_automata-f/`` for Fortran. + - 2. Where are the obtained executables located in the build tree? Remember that CMake generates a build tree mirroring the source tree. + - 3. The executable will accept 3 arguments: the length, number of steps, and + automaton rule. You can run it with: + + .. code-block:: bash + + $ automata 40 5 30 + + The output will be: + + .. code-block:: text + + length: 40 + number of steps: 5 + rule: 30 + * + *** + ** * + ** **** + ** * * + ** **** *** + + + +.. typealong:: The internal dependency tree + + You can visualize the dependencies between targets in the project with Graphviz: + + .. code-block:: bash + + $ cd build + $ cmake --graphviz=project.dot .. + $ dot -T svg project.dot -o project.svg + + .. figure:: img/graphviz-multiple-folder-project.svg + :align: center + + The dependencies between targets in the cellular automata project. + + + +.. keypoints:: + + - Using **targets**, you can achieve granular control over how artifacts are built and how their dependencies are handled. + - Compiler flags, definitions, source files, include folders, link libraries, and linker options are **properties** of a target. + - Avoid using variables to express dependencies between targets: use visibility levels ``PRIVATE``, ``INTERFACE``, ``PUBLIC`` and let CMake figure out the details. + - To keep the complexity of the build system at a minimum, each folder in a multi-folder project should have its own CMake script. + + + diff --git a/branch/main/_sources/tips-and-tricks.rst.txt b/branch/main/_sources/tips-and-tricks.rst.txt new file mode 100644 index 0000000..b901f8f --- /dev/null +++ b/branch/main/_sources/tips-and-tricks.rst.txt @@ -0,0 +1,166 @@ +.. _tips-and-tricks: + + +Tips and tricks using CMake +============================ + + +.. objectives:: + + - Learn what tools exist to structure projects as they grow. + - Discuss the value of localizing scope and avoiding side effects. + - Recognize more maintainable and less maintainable patterns. + + +As projects grow, code structures get more complicated: more possibilities, more corner cases, more options to users, and more developers who are contributing and may not oversee the entire CMake structure. In this episode we will mention a couple of tools to bring some structure and flow-control into larger projects. [#adapt_from_CR]_ + + + +Listing sources or globbing them +-------------------------------- + + +In all our examples we have listed all sources when defining targets. + +In CMake, you can glob patters (*e.g.* all files that end with ``*.cpp``) without listing them explicitly. This is tempting, but we advice **against** doing this. The reason is that CMake cannot **guarantee** correct tracking dependency changes when you add files after you have configured. [#glob]_ + +Listing files explicitly also allows to ``grep`` for them in the CMake code to see where a modification is likely needed. This can help colleagues in our projects who are not familiar with CMake to find out where to change things. + + + +Options and flow control +------------------------ + + +You may want to give users the possibility to decide whether they want to enable an option or not. + +.. code-block:: cmake + + # by default this one will be ON + option(ENABLE_MPI "Configure for MPI parallelization" ON) + + if(ENABLE_MPI) + find_package(MPI REQUIRED COMPONENTS Fortran) + else() + message(STATUS "no problem, building without MPI") + endif() + +Now the users can decide: + +.. code-block:: console + + $ cmake -S. -Bbuild -DENABLE_MPI=OFF + + + +Organizing files into modules +----------------------------- + + +Modules are collections of functions and macros and are either CMake- or user-defined. CMake comes with a rich ecosystem of modules and you will probably write a few of your own to encapsulate frequently used functions or macros in your CMake scripts. + +You can collect related CMake-code into a file called ``my_lengthy_code.cmake`` and then include it in another CMake code as shown below. This can help organizing projects that are growing out of hand and separate concerns. + +.. code-block:: cmake + + include(my_lengthy_code) + + + +Variables vs. targets +--------------------- + + +In :ref:`targets` we have motivated why targets are preferable over variables. + +When you portion your project into modules, then variable declaration impose an order and the risk is high that somebody will not know about the implicit order and reorder modules one day and the behavior will change. + +Try to minimize the use of user-defined variables. They can point to a sub-optimal solution and a better, more state-less, declarative, solution may exist. + + + +Functions and macros +-------------------- + + +**Functions** and **macros** are built on top of the basic built-in commands and are either CMake- or user-defined. These prove useful to avoid repetition in your CMake scripts. The difference between a function and a macro is their **scope**: + +#. Functions have their own scope: variables defined inside a function are not propagated back to the caller. +#. Macros do not have their own scope: variables from the parent scope can be modified and new variables in the parent scope can be set. + +**Prefer functions over macros to minimize side-effects**. + + + +Where to list sources and tests? +-------------------------------- + + +Some projects collect all sources in one file, all tests in another file, and carry them across in variables: + +.. code-block:: text + + project/ + ├── CMakeLists.txt + ├── cmake + | ├── sources.cmake + | ├── tests.cmake + | └── definitions.cmake + ├── external + └── src + ├── evolution + ├── initial + ├── io + └── parser + +It is recommended to organize the sources like the format below, where sources, definitions, and tests are defined in the "closest" ``CMakeLists.txt`` files. + +.. code-block:: text + + project/ + ├── CMakeLists.txt + ├── external + │ ├── CMakeLists.txt + └── src + ├── CMakeLists.txt + ├── evolution + │ ├── CMakeLists.txt + ├── initial + │ ├── CMakeLists.txt + ├── io + │ ├── CMakeLists.txt + └── parser + └── CMakeLists.txt + + +The reason is that this will minimize side-effects, ordering effects, and simplify maintenance for those who want to add or rename source files: they can do it in one place, close to where they are coding. + + + +Order and side effects +---------------------- + + +- When portioning your project into modules, design them in a way so that order does not matter (much). +- This is easier with functions than with macros, and easier with targets than with variables. +- Avoid variables with parent or global scope. Encapsulate and prefer separation of concerns. + + + +Where to keep generated files +----------------------------- + + +CMake allows us to generate files at configure- or build-time. When generating files, we recommend to **always** generate into the build folder, never outside. + +The reason is that you always want to maintain the possibility to configure different builds with the same source without having to copy the entire project to a different place. + + + + +.. rubric:: Footnotes + +.. [#adapt_from_CR] This episode is adapted, with permission, from the `CodeRefinery CMake lesson `_. + +.. [#glob] A glob would be done using the ``file`` command. We quote the explanation in the official documentation as to why it is generally not safe to use the ``GLOB`` subcommand: *If no ``CMakeLists.txt`` file changes when a source is added or removed then the generated build system cannot know when to ask CMake to regenerate. The ``CONFIGURE_DEPENDS`` flag may not work reliably on all generators, or if a new generator is added in the future that cannot support it, projects using it will be stuck. Even if ``CONFIGURE_DEPENDS`` works reliably, there is still a cost to perform the check on every rebuild.* + diff --git a/branch/main/_static/ENCCS.jpg b/branch/main/_static/ENCCS.jpg new file mode 100644 index 0000000..da2355c Binary files /dev/null and b/branch/main/_static/ENCCS.jpg differ diff --git a/branch/main/_static/_sphinx_javascript_frameworks_compat.js b/branch/main/_static/_sphinx_javascript_frameworks_compat.js new file mode 100644 index 0000000..8141580 --- /dev/null +++ b/branch/main/_static/_sphinx_javascript_frameworks_compat.js @@ -0,0 +1,123 @@ +/* Compatability shim for jQuery and underscores.js. + * + * Copyright Sphinx contributors + * Released under the two clause BSD licence + */ + +/** + * small helper function to urldecode strings + * + * See https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/decodeURIComponent#Decoding_query_parameters_from_a_URL + */ +jQuery.urldecode = function(x) { + if (!x) { + return x + } + return decodeURIComponent(x.replace(/\+/g, ' ')); +}; + +/** + * small helper function to urlencode strings + */ +jQuery.urlencode = encodeURIComponent; + +/** + * This function returns the parsed url parameters of the + * current request. Multiple values per key are supported, + * it will always return arrays of strings for the value parts. + */ +jQuery.getQueryParameters = function(s) { + if (typeof s === 'undefined') + s = document.location.search; + var parts = s.substr(s.indexOf('?') + 1).split('&'); + var result = {}; + for (var i = 0; i < parts.length; i++) { + var tmp = parts[i].split('=', 2); + var key = jQuery.urldecode(tmp[0]); + var value = jQuery.urldecode(tmp[1]); + if (key in result) + result[key].push(value); + else + result[key] = [value]; + } + return result; +}; + +/** + * highlight a given string on a jquery object by wrapping it in + * span elements with the given class name. + */ +jQuery.fn.highlightText = function(text, className) { + function highlight(node, addItems) { + if (node.nodeType === 3) { + var val = node.nodeValue; + var pos = val.toLowerCase().indexOf(text); + if (pos >= 0 && + !jQuery(node.parentNode).hasClass(className) && + !jQuery(node.parentNode).hasClass("nohighlight")) { + var span; + var isInSVG = jQuery(node).closest("body, svg, foreignObject").is("svg"); + if (isInSVG) { + span = document.createElementNS("http://www.w3.org/2000/svg", "tspan"); + } else { + span = document.createElement("span"); + span.className = className; + } + span.appendChild(document.createTextNode(val.substr(pos, text.length))); + node.parentNode.insertBefore(span, node.parentNode.insertBefore( + document.createTextNode(val.substr(pos + text.length)), + node.nextSibling)); + node.nodeValue = val.substr(0, pos); + if (isInSVG) { + var rect = document.createElementNS("http://www.w3.org/2000/svg", "rect"); + var bbox = node.parentElement.getBBox(); + rect.x.baseVal.value = bbox.x; + rect.y.baseVal.value = bbox.y; + rect.width.baseVal.value = bbox.width; + rect.height.baseVal.value = bbox.height; + rect.setAttribute('class', className); + addItems.push({ + "parent": node.parentNode, + "target": rect}); + } + } + } + else if (!jQuery(node).is("button, select, textarea")) { + jQuery.each(node.childNodes, function() { + highlight(this, addItems); + }); + } + } + var addItems = []; + var result = this.each(function() { + highlight(this, addItems); + }); + for (var i = 0; i < addItems.length; ++i) { + jQuery(addItems[i].parent).before(addItems[i].target); + } + return result; +}; + +/* + * backward compatibility for jQuery.browser + * This will be supported until firefox bug is fixed. + */ +if (!jQuery.browser) { + jQuery.uaMatch = function(ua) { + ua = ua.toLowerCase(); + + var match = /(chrome)[ \/]([\w.]+)/.exec(ua) || + /(webkit)[ \/]([\w.]+)/.exec(ua) || + /(opera)(?:.*version|)[ \/]([\w.]+)/.exec(ua) || + /(msie) ([\w.]+)/.exec(ua) || + ua.indexOf("compatible") < 0 && /(mozilla)(?:.*? rv:([\w.]+)|)/.exec(ua) || + []; + + return { + browser: match[ 1 ] || "", + version: match[ 2 ] || "0" + }; + }; + jQuery.browser = {}; + jQuery.browser[jQuery.uaMatch(navigator.userAgent).browser] = true; +} diff --git a/branch/main/_static/basic.css b/branch/main/_static/basic.css new file mode 100644 index 0000000..f316efc --- /dev/null +++ b/branch/main/_static/basic.css @@ -0,0 +1,925 @@ +/* + * basic.css + * ~~~~~~~~~ + * + * Sphinx stylesheet -- basic theme. + * + * :copyright: Copyright 2007-2024 by the Sphinx team, see AUTHORS. + * :license: BSD, see LICENSE for details. + * + */ + +/* -- main layout ----------------------------------------------------------- */ + +div.clearer { + clear: both; +} + +div.section::after { + display: block; + content: ''; + clear: left; +} + +/* -- relbar ---------------------------------------------------------------- */ + +div.related { + width: 100%; + font-size: 90%; +} + +div.related h3 { + display: none; +} + +div.related ul { + margin: 0; + padding: 0 0 0 10px; + list-style: none; +} + +div.related li { + display: inline; +} + +div.related li.right { + float: right; + margin-right: 5px; +} + +/* -- sidebar --------------------------------------------------------------- */ + +div.sphinxsidebarwrapper { + padding: 10px 5px 0 10px; +} + +div.sphinxsidebar { + float: left; + width: 230px; + margin-left: -100%; + font-size: 90%; + word-wrap: break-word; + overflow-wrap : break-word; +} + +div.sphinxsidebar ul { + list-style: none; +} + +div.sphinxsidebar ul ul, +div.sphinxsidebar ul.want-points { + margin-left: 20px; + list-style: square; +} + +div.sphinxsidebar ul ul { + margin-top: 0; + margin-bottom: 0; +} + +div.sphinxsidebar form { + margin-top: 10px; +} + +div.sphinxsidebar input { + border: 1px solid #98dbcc; + font-family: sans-serif; + font-size: 1em; +} + +div.sphinxsidebar #searchbox form.search { + overflow: hidden; +} + +div.sphinxsidebar #searchbox input[type="text"] { + float: left; + width: 80%; + padding: 0.25em; + box-sizing: border-box; +} + +div.sphinxsidebar #searchbox input[type="submit"] { + float: left; + width: 20%; + border-left: none; + padding: 0.25em; + box-sizing: border-box; +} + + +img { + border: 0; + max-width: 100%; +} + +/* -- search page ----------------------------------------------------------- */ + +ul.search { + margin: 10px 0 0 20px; + padding: 0; +} + +ul.search li { + padding: 5px 0 5px 20px; + background-image: url(file.png); + background-repeat: no-repeat; + background-position: 0 7px; +} + +ul.search li a { + font-weight: bold; +} + +ul.search li p.context { + color: #888; + margin: 2px 0 0 30px; + text-align: left; +} + +ul.keywordmatches li.goodmatch a { + font-weight: bold; +} + +/* -- index page ------------------------------------------------------------ */ + +table.contentstable { + width: 90%; + margin-left: auto; + margin-right: auto; +} + +table.contentstable p.biglink { + line-height: 150%; +} + +a.biglink { + font-size: 1.3em; +} + +span.linkdescr { + font-style: italic; + padding-top: 5px; + font-size: 90%; +} + +/* -- general index --------------------------------------------------------- */ + +table.indextable { + width: 100%; +} + +table.indextable td { + text-align: left; + vertical-align: top; +} + +table.indextable ul { + margin-top: 0; + margin-bottom: 0; + list-style-type: none; +} + +table.indextable > tbody > tr > td > ul { + padding-left: 0em; +} + +table.indextable tr.pcap { + height: 10px; +} + +table.indextable tr.cap { + margin-top: 10px; + background-color: #f2f2f2; +} + +img.toggler { + margin-right: 3px; + margin-top: 3px; + cursor: pointer; +} + +div.modindex-jumpbox { + border-top: 1px solid #ddd; + border-bottom: 1px solid #ddd; + margin: 1em 0 1em 0; + padding: 0.4em; +} + +div.genindex-jumpbox { + border-top: 1px solid #ddd; + border-bottom: 1px solid #ddd; + margin: 1em 0 1em 0; + padding: 0.4em; +} + +/* -- domain module index --------------------------------------------------- */ + +table.modindextable td { + padding: 2px; + border-collapse: collapse; +} + +/* -- general body styles --------------------------------------------------- */ + +div.body { + min-width: 360px; + max-width: 800px; +} + +div.body p, div.body dd, div.body li, div.body blockquote { + -moz-hyphens: auto; + -ms-hyphens: auto; + -webkit-hyphens: auto; + hyphens: auto; +} + +a.headerlink { + visibility: hidden; +} + +a:visited { + color: #551A8B; +} + +h1:hover > a.headerlink, +h2:hover > a.headerlink, +h3:hover > a.headerlink, +h4:hover > a.headerlink, +h5:hover > a.headerlink, +h6:hover > a.headerlink, +dt:hover > a.headerlink, +caption:hover > a.headerlink, +p.caption:hover > a.headerlink, +div.code-block-caption:hover > a.headerlink { + visibility: visible; +} + +div.body p.caption { + text-align: inherit; +} + +div.body td { + text-align: left; +} + +.first { + margin-top: 0 !important; +} + +p.rubric { + margin-top: 30px; + font-weight: bold; +} + +img.align-left, figure.align-left, .figure.align-left, object.align-left { + clear: left; + float: left; + margin-right: 1em; +} + +img.align-right, figure.align-right, .figure.align-right, object.align-right { + clear: right; + float: right; + margin-left: 1em; +} + +img.align-center, figure.align-center, .figure.align-center, object.align-center { + display: block; + margin-left: auto; + margin-right: auto; +} + +img.align-default, figure.align-default, .figure.align-default { + display: block; + margin-left: auto; + margin-right: auto; +} + +.align-left { + text-align: left; +} + +.align-center { + text-align: center; +} + +.align-default { + text-align: center; +} + +.align-right { + text-align: right; +} + +/* -- sidebars -------------------------------------------------------------- */ + +div.sidebar, +aside.sidebar { + margin: 0 0 0.5em 1em; + border: 1px solid #ddb; + padding: 7px; + background-color: #ffe; + width: 40%; + float: right; + clear: right; + overflow-x: auto; +} + +p.sidebar-title { + font-weight: bold; +} + +nav.contents, +aside.topic, +div.admonition, div.topic, blockquote { + clear: left; +} + +/* -- topics ---------------------------------------------------------------- */ + +nav.contents, +aside.topic, +div.topic { + border: 1px solid #ccc; + padding: 7px; + margin: 10px 0 10px 0; +} + +p.topic-title { + font-size: 1.1em; + font-weight: bold; + margin-top: 10px; +} + +/* -- admonitions ----------------------------------------------------------- */ + +div.admonition { + margin-top: 10px; + margin-bottom: 10px; + padding: 7px; +} + +div.admonition dt { + font-weight: bold; +} + +p.admonition-title { + margin: 0px 10px 5px 0px; + font-weight: bold; +} + +div.body p.centered { + text-align: center; + margin-top: 25px; +} + +/* -- content of sidebars/topics/admonitions -------------------------------- */ + +div.sidebar > :last-child, +aside.sidebar > :last-child, +nav.contents > :last-child, +aside.topic > :last-child, +div.topic > :last-child, +div.admonition > :last-child { + margin-bottom: 0; +} + +div.sidebar::after, +aside.sidebar::after, +nav.contents::after, +aside.topic::after, +div.topic::after, +div.admonition::after, +blockquote::after { + display: block; + content: ''; + clear: both; +} + +/* -- tables ---------------------------------------------------------------- */ + +table.docutils { + margin-top: 10px; + margin-bottom: 10px; + border: 0; + border-collapse: collapse; +} + +table.align-center { + margin-left: auto; + margin-right: auto; +} + +table.align-default { + margin-left: auto; + margin-right: auto; +} + +table caption span.caption-number { + font-style: italic; +} + +table caption span.caption-text { +} + +table.docutils td, table.docutils th { + padding: 1px 8px 1px 5px; + border-top: 0; + border-left: 0; + border-right: 0; + border-bottom: 1px solid #aaa; +} + +th { + text-align: left; + padding-right: 5px; +} + +table.citation { + border-left: solid 1px gray; + margin-left: 1px; +} + +table.citation td { + border-bottom: none; +} + +th > :first-child, +td > :first-child { + margin-top: 0px; +} + +th > :last-child, +td > :last-child { + margin-bottom: 0px; +} + +/* -- figures --------------------------------------------------------------- */ + +div.figure, figure { + margin: 0.5em; + padding: 0.5em; +} + +div.figure p.caption, figcaption { + padding: 0.3em; +} + +div.figure p.caption span.caption-number, +figcaption span.caption-number { + font-style: italic; +} + +div.figure p.caption span.caption-text, +figcaption span.caption-text { +} + +/* -- field list styles ----------------------------------------------------- */ + +table.field-list td, table.field-list th { + border: 0 !important; +} + +.field-list ul { + margin: 0; + padding-left: 1em; +} + +.field-list p { + margin: 0; +} + +.field-name { + -moz-hyphens: manual; + -ms-hyphens: manual; + -webkit-hyphens: manual; + hyphens: manual; +} + +/* -- hlist styles ---------------------------------------------------------- */ + +table.hlist { + margin: 1em 0; +} + +table.hlist td { + vertical-align: top; +} + +/* -- object description styles --------------------------------------------- */ + +.sig { + font-family: 'Consolas', 'Menlo', 'DejaVu Sans Mono', 'Bitstream Vera Sans Mono', monospace; +} + +.sig-name, code.descname { + background-color: transparent; + font-weight: bold; +} + +.sig-name { + font-size: 1.1em; +} + +code.descname { + font-size: 1.2em; +} + +.sig-prename, code.descclassname { + background-color: transparent; +} + +.optional { + font-size: 1.3em; +} + +.sig-paren { + font-size: larger; +} + +.sig-param.n { + font-style: italic; +} + +/* C++ specific styling */ + +.sig-inline.c-texpr, +.sig-inline.cpp-texpr { + font-family: unset; +} + +.sig.c .k, .sig.c .kt, +.sig.cpp .k, .sig.cpp .kt { + color: #0033B3; +} + +.sig.c .m, +.sig.cpp .m { + color: #1750EB; +} + +.sig.c .s, .sig.c .sc, +.sig.cpp .s, .sig.cpp .sc { + color: #067D17; +} + + +/* -- other body styles ----------------------------------------------------- */ + +ol.arabic { + list-style: decimal; +} + +ol.loweralpha { + list-style: lower-alpha; +} + +ol.upperalpha { + list-style: upper-alpha; +} + +ol.lowerroman { + list-style: lower-roman; +} + +ol.upperroman { + list-style: upper-roman; +} + +:not(li) > ol > li:first-child > :first-child, +:not(li) > ul > li:first-child > :first-child { + margin-top: 0px; +} + +:not(li) > ol > li:last-child > :last-child, +:not(li) > ul > li:last-child > :last-child { + margin-bottom: 0px; +} + +ol.simple ol p, +ol.simple ul p, +ul.simple ol p, +ul.simple ul p { + margin-top: 0; +} + +ol.simple > li:not(:first-child) > p, +ul.simple > li:not(:first-child) > p { + margin-top: 0; +} + +ol.simple p, +ul.simple p { + margin-bottom: 0; +} + +aside.footnote > span, +div.citation > span { + float: left; +} +aside.footnote > span:last-of-type, +div.citation > span:last-of-type { + padding-right: 0.5em; +} +aside.footnote > p { + margin-left: 2em; +} +div.citation > p { + margin-left: 4em; +} +aside.footnote > p:last-of-type, +div.citation > p:last-of-type { + margin-bottom: 0em; +} +aside.footnote > p:last-of-type:after, +div.citation > p:last-of-type:after { + content: ""; + clear: both; +} + +dl.field-list { + display: grid; + grid-template-columns: fit-content(30%) auto; +} + +dl.field-list > dt { + font-weight: bold; + word-break: break-word; + padding-left: 0.5em; + padding-right: 5px; +} + +dl.field-list > dd { + padding-left: 0.5em; + margin-top: 0em; + margin-left: 0em; + margin-bottom: 0em; +} + +dl { + margin-bottom: 15px; +} + +dd > :first-child { + margin-top: 0px; +} + +dd ul, dd table { + margin-bottom: 10px; +} + +dd { + margin-top: 3px; + margin-bottom: 10px; + margin-left: 30px; +} + +.sig dd { + margin-top: 0px; + margin-bottom: 0px; +} + +.sig dl { + margin-top: 0px; + margin-bottom: 0px; +} + +dl > dd:last-child, +dl > dd:last-child > :last-child { + margin-bottom: 0; +} + +dt:target, span.highlighted { + background-color: #fbe54e; +} + +rect.highlighted { + fill: #fbe54e; +} + +dl.glossary dt { + font-weight: bold; + font-size: 1.1em; +} + +.versionmodified { + font-style: italic; +} + +.system-message { + background-color: #fda; + padding: 5px; + border: 3px solid red; +} + +.footnote:target { + background-color: #ffa; +} + +.line-block { + display: block; + margin-top: 1em; + margin-bottom: 1em; +} + +.line-block .line-block { + margin-top: 0; + margin-bottom: 0; + margin-left: 1.5em; +} + +.guilabel, .menuselection { + font-family: sans-serif; +} + +.accelerator { + text-decoration: underline; +} + +.classifier { + font-style: oblique; +} + +.classifier:before { + font-style: normal; + margin: 0 0.5em; + content: ":"; + display: inline-block; +} + +abbr, acronym { + border-bottom: dotted 1px; + cursor: help; +} + +.translated { + background-color: rgba(207, 255, 207, 0.2) +} + +.untranslated { + background-color: rgba(255, 207, 207, 0.2) +} + +/* -- code displays --------------------------------------------------------- */ + +pre { + overflow: auto; + overflow-y: hidden; /* fixes display issues on Chrome browsers */ +} + +pre, div[class*="highlight-"] { + clear: both; +} + +span.pre { + -moz-hyphens: none; + -ms-hyphens: none; + -webkit-hyphens: none; + hyphens: none; + white-space: nowrap; +} + +div[class*="highlight-"] { + margin: 1em 0; +} + +td.linenos pre { + border: 0; + background-color: transparent; + color: #aaa; +} + +table.highlighttable { + display: block; +} + +table.highlighttable tbody { + display: block; +} + +table.highlighttable tr { + display: flex; +} + +table.highlighttable td { + margin: 0; + padding: 0; +} + +table.highlighttable td.linenos { + padding-right: 0.5em; +} + +table.highlighttable td.code { + flex: 1; + overflow: hidden; +} + +.highlight .hll { + display: block; +} + +div.highlight pre, +table.highlighttable pre { + margin: 0; +} + +div.code-block-caption + div { + margin-top: 0; +} + +div.code-block-caption { + margin-top: 1em; + padding: 2px 5px; + font-size: small; +} + +div.code-block-caption code { + background-color: transparent; +} + +table.highlighttable td.linenos, +span.linenos, +div.highlight span.gp { /* gp: Generic.Prompt */ + user-select: none; + -webkit-user-select: text; /* Safari fallback only */ + -webkit-user-select: none; /* Chrome/Safari */ + -moz-user-select: none; /* Firefox */ + -ms-user-select: none; /* IE10+ */ +} + +div.code-block-caption span.caption-number { + padding: 0.1em 0.3em; + font-style: italic; +} + +div.code-block-caption span.caption-text { +} + +div.literal-block-wrapper { + margin: 1em 0; +} + +code.xref, a code { + background-color: transparent; + font-weight: bold; +} + +h1 code, h2 code, h3 code, h4 code, h5 code, h6 code { + background-color: transparent; +} + +.viewcode-link { + float: right; +} + +.viewcode-back { + float: right; + font-family: sans-serif; +} + +div.viewcode-block:target { + margin: -1px -10px; + padding: 0 10px; +} + +/* -- math display ---------------------------------------------------------- */ + +img.math { + vertical-align: middle; +} + +div.body div.math p { + text-align: center; +} + +span.eqno { + float: right; +} + +span.eqno a.headerlink { + position: absolute; + z-index: 1; +} + +div.math:hover a.headerlink { + visibility: visible; +} + +/* -- printout stylesheet --------------------------------------------------- */ + +@media print { + div.document, + div.documentwrapper, + div.bodywrapper { + margin: 0 !important; + width: 100%; + } + + div.sphinxsidebar, + div.related, + div.footer, + #top-link { + display: none; + } +} \ No newline at end of file diff --git a/branch/main/_static/check-solid.svg b/branch/main/_static/check-solid.svg new file mode 100644 index 0000000..92fad4b --- /dev/null +++ b/branch/main/_static/check-solid.svg @@ -0,0 +1,4 @@ + + + + diff --git a/branch/main/_static/clipboard.min.js b/branch/main/_static/clipboard.min.js new file mode 100644 index 0000000..54b3c46 --- /dev/null +++ b/branch/main/_static/clipboard.min.js @@ -0,0 +1,7 @@ +/*! + * clipboard.js v2.0.8 + * https://clipboardjs.com/ + * + * Licensed MIT © Zeno Rocha + */ +!function(t,e){"object"==typeof exports&&"object"==typeof module?module.exports=e():"function"==typeof define&&define.amd?define([],e):"object"==typeof exports?exports.ClipboardJS=e():t.ClipboardJS=e()}(this,function(){return n={686:function(t,e,n){"use strict";n.d(e,{default:function(){return o}});var e=n(279),i=n.n(e),e=n(370),u=n.n(e),e=n(817),c=n.n(e);function a(t){try{return document.execCommand(t)}catch(t){return}}var f=function(t){t=c()(t);return a("cut"),t};var l=function(t){var e,n,o,r=1 + + + + diff --git a/branch/main/_static/copybutton.css b/branch/main/_static/copybutton.css new file mode 100644 index 0000000..f1916ec --- /dev/null +++ b/branch/main/_static/copybutton.css @@ -0,0 +1,94 @@ +/* Copy buttons */ +button.copybtn { + position: absolute; + display: flex; + top: .3em; + right: .3em; + width: 1.7em; + height: 1.7em; + opacity: 0; + transition: opacity 0.3s, border .3s, background-color .3s; + user-select: none; + padding: 0; + border: none; + outline: none; + border-radius: 0.4em; + /* The colors that GitHub uses */ + border: #1b1f2426 1px solid; + background-color: #f6f8fa; + color: #57606a; +} + +button.copybtn.success { + border-color: #22863a; + color: #22863a; +} + +button.copybtn svg { + stroke: currentColor; + width: 1.5em; + height: 1.5em; + padding: 0.1em; +} + +div.highlight { + position: relative; +} + +/* Show the copybutton */ +.highlight:hover button.copybtn, button.copybtn.success { + opacity: 1; +} + +.highlight button.copybtn:hover { + background-color: rgb(235, 235, 235); +} + +.highlight button.copybtn:active { + background-color: rgb(187, 187, 187); +} + +/** + * A minimal CSS-only tooltip copied from: + * https://codepen.io/mildrenben/pen/rVBrpK + * + * To use, write HTML like the following: + * + *

Short

+ */ + .o-tooltip--left { + position: relative; + } + + .o-tooltip--left:after { + opacity: 0; + visibility: hidden; + position: absolute; + content: attr(data-tooltip); + padding: .2em; + font-size: .8em; + left: -.2em; + background: grey; + color: white; + white-space: nowrap; + z-index: 2; + border-radius: 2px; + transform: translateX(-102%) translateY(0); + transition: opacity 0.2s cubic-bezier(0.64, 0.09, 0.08, 1), transform 0.2s cubic-bezier(0.64, 0.09, 0.08, 1); +} + +.o-tooltip--left:hover:after { + display: block; + opacity: 1; + visibility: visible; + transform: translateX(-100%) translateY(0); + transition: opacity 0.2s cubic-bezier(0.64, 0.09, 0.08, 1), transform 0.2s cubic-bezier(0.64, 0.09, 0.08, 1); + transition-delay: .5s; +} + +/* By default the copy button shouldn't show up when printing a page */ +@media print { + button.copybtn { + display: none; + } +} diff --git a/branch/main/_static/copybutton.js b/branch/main/_static/copybutton.js new file mode 100644 index 0000000..2ea7ff3 --- /dev/null +++ b/branch/main/_static/copybutton.js @@ -0,0 +1,248 @@ +// Localization support +const messages = { + 'en': { + 'copy': 'Copy', + 'copy_to_clipboard': 'Copy to clipboard', + 'copy_success': 'Copied!', + 'copy_failure': 'Failed to copy', + }, + 'es' : { + 'copy': 'Copiar', + 'copy_to_clipboard': 'Copiar al portapapeles', + 'copy_success': '¡Copiado!', + 'copy_failure': 'Error al copiar', + }, + 'de' : { + 'copy': 'Kopieren', + 'copy_to_clipboard': 'In die Zwischenablage kopieren', + 'copy_success': 'Kopiert!', + 'copy_failure': 'Fehler beim Kopieren', + }, + 'fr' : { + 'copy': 'Copier', + 'copy_to_clipboard': 'Copier dans le presse-papier', + 'copy_success': 'Copié !', + 'copy_failure': 'Échec de la copie', + }, + 'ru': { + 'copy': 'Скопировать', + 'copy_to_clipboard': 'Скопировать в буфер', + 'copy_success': 'Скопировано!', + 'copy_failure': 'Не удалось скопировать', + }, + 'zh-CN': { + 'copy': '复制', + 'copy_to_clipboard': '复制到剪贴板', + 'copy_success': '复制成功!', + 'copy_failure': '复制失败', + }, + 'it' : { + 'copy': 'Copiare', + 'copy_to_clipboard': 'Copiato negli appunti', + 'copy_success': 'Copiato!', + 'copy_failure': 'Errore durante la copia', + } +} + +let locale = 'en' +if( document.documentElement.lang !== undefined + && messages[document.documentElement.lang] !== undefined ) { + locale = document.documentElement.lang +} + +let doc_url_root = DOCUMENTATION_OPTIONS.URL_ROOT; +if (doc_url_root == '#') { + doc_url_root = ''; +} + +/** + * SVG files for our copy buttons + */ +let iconCheck = ` + ${messages[locale]['copy_success']} + + +` + +// If the user specified their own SVG use that, otherwise use the default +let iconCopy = ``; +if (!iconCopy) { + iconCopy = ` + ${messages[locale]['copy_to_clipboard']} + + + +` +} + +/** + * Set up copy/paste for code blocks + */ + +const runWhenDOMLoaded = cb => { + if (document.readyState != 'loading') { + cb() + } else if (document.addEventListener) { + document.addEventListener('DOMContentLoaded', cb) + } else { + document.attachEvent('onreadystatechange', function() { + if (document.readyState == 'complete') cb() + }) + } +} + +const codeCellId = index => `codecell${index}` + +// Clears selected text since ClipboardJS will select the text when copying +const clearSelection = () => { + if (window.getSelection) { + window.getSelection().removeAllRanges() + } else if (document.selection) { + document.selection.empty() + } +} + +// Changes tooltip text for a moment, then changes it back +// We want the timeout of our `success` class to be a bit shorter than the +// tooltip and icon change, so that we can hide the icon before changing back. +var timeoutIcon = 2000; +var timeoutSuccessClass = 1500; + +const temporarilyChangeTooltip = (el, oldText, newText) => { + el.setAttribute('data-tooltip', newText) + el.classList.add('success') + // Remove success a little bit sooner than we change the tooltip + // So that we can use CSS to hide the copybutton first + setTimeout(() => el.classList.remove('success'), timeoutSuccessClass) + setTimeout(() => el.setAttribute('data-tooltip', oldText), timeoutIcon) +} + +// Changes the copy button icon for two seconds, then changes it back +const temporarilyChangeIcon = (el) => { + el.innerHTML = iconCheck; + setTimeout(() => {el.innerHTML = iconCopy}, timeoutIcon) +} + +const addCopyButtonToCodeCells = () => { + // If ClipboardJS hasn't loaded, wait a bit and try again. This + // happens because we load ClipboardJS asynchronously. + if (window.ClipboardJS === undefined) { + setTimeout(addCopyButtonToCodeCells, 250) + return + } + + // Add copybuttons to all of our code cells + const COPYBUTTON_SELECTOR = 'div.highlight pre'; + const codeCells = document.querySelectorAll(COPYBUTTON_SELECTOR) + codeCells.forEach((codeCell, index) => { + const id = codeCellId(index) + codeCell.setAttribute('id', id) + + const clipboardButton = id => + `` + codeCell.insertAdjacentHTML('afterend', clipboardButton(id)) + }) + +function escapeRegExp(string) { + return string.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'); // $& means the whole matched string +} + +/** + * Removes excluded text from a Node. + * + * @param {Node} target Node to filter. + * @param {string} exclude CSS selector of nodes to exclude. + * @returns {DOMString} Text from `target` with text removed. + */ +function filterText(target, exclude) { + const clone = target.cloneNode(true); // clone as to not modify the live DOM + if (exclude) { + // remove excluded nodes + clone.querySelectorAll(exclude).forEach(node => node.remove()); + } + return clone.innerText; +} + +// Callback when a copy button is clicked. Will be passed the node that was clicked +// should then grab the text and replace pieces of text that shouldn't be used in output +function formatCopyText(textContent, copybuttonPromptText, isRegexp = false, onlyCopyPromptLines = true, removePrompts = true, copyEmptyLines = true, lineContinuationChar = "", hereDocDelim = "") { + var regexp; + var match; + + // Do we check for line continuation characters and "HERE-documents"? + var useLineCont = !!lineContinuationChar + var useHereDoc = !!hereDocDelim + + // create regexp to capture prompt and remaining line + if (isRegexp) { + regexp = new RegExp('^(' + copybuttonPromptText + ')(.*)') + } else { + regexp = new RegExp('^(' + escapeRegExp(copybuttonPromptText) + ')(.*)') + } + + const outputLines = []; + var promptFound = false; + var gotLineCont = false; + var gotHereDoc = false; + const lineGotPrompt = []; + for (const line of textContent.split('\n')) { + match = line.match(regexp) + if (match || gotLineCont || gotHereDoc) { + promptFound = regexp.test(line) + lineGotPrompt.push(promptFound) + if (removePrompts && promptFound) { + outputLines.push(match[2]) + } else { + outputLines.push(line) + } + gotLineCont = line.endsWith(lineContinuationChar) & useLineCont + if (line.includes(hereDocDelim) & useHereDoc) + gotHereDoc = !gotHereDoc + } else if (!onlyCopyPromptLines) { + outputLines.push(line) + } else if (copyEmptyLines && line.trim() === '') { + outputLines.push(line) + } + } + + // If no lines with the prompt were found then just use original lines + if (lineGotPrompt.some(v => v === true)) { + textContent = outputLines.join('\n'); + } + + // Remove a trailing newline to avoid auto-running when pasting + if (textContent.endsWith("\n")) { + textContent = textContent.slice(0, -1) + } + return textContent +} + + +var copyTargetText = (trigger) => { + var target = document.querySelector(trigger.attributes['data-clipboard-target'].value); + + // get filtered text + let exclude = '.linenos'; + + let text = filterText(target, exclude); + return formatCopyText(text, '', false, true, true, true, '', '') +} + + // Initialize with a callback so we can modify the text before copy + const clipboard = new ClipboardJS('.copybtn', {text: copyTargetText}) + + // Update UI with error/success messages + clipboard.on('success', event => { + clearSelection() + temporarilyChangeTooltip(event.trigger, messages[locale]['copy'], messages[locale]['copy_success']) + temporarilyChangeIcon(event.trigger) + }) + + clipboard.on('error', event => { + temporarilyChangeTooltip(event.trigger, messages[locale]['copy'], messages[locale]['copy_failure']) + }) +} + +runWhenDOMLoaded(addCopyButtonToCodeCells) \ No newline at end of file diff --git a/branch/main/_static/copybutton_funcs.js b/branch/main/_static/copybutton_funcs.js new file mode 100644 index 0000000..dbe1aaa --- /dev/null +++ b/branch/main/_static/copybutton_funcs.js @@ -0,0 +1,73 @@ +function escapeRegExp(string) { + return string.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'); // $& means the whole matched string +} + +/** + * Removes excluded text from a Node. + * + * @param {Node} target Node to filter. + * @param {string} exclude CSS selector of nodes to exclude. + * @returns {DOMString} Text from `target` with text removed. + */ +export function filterText(target, exclude) { + const clone = target.cloneNode(true); // clone as to not modify the live DOM + if (exclude) { + // remove excluded nodes + clone.querySelectorAll(exclude).forEach(node => node.remove()); + } + return clone.innerText; +} + +// Callback when a copy button is clicked. Will be passed the node that was clicked +// should then grab the text and replace pieces of text that shouldn't be used in output +export function formatCopyText(textContent, copybuttonPromptText, isRegexp = false, onlyCopyPromptLines = true, removePrompts = true, copyEmptyLines = true, lineContinuationChar = "", hereDocDelim = "") { + var regexp; + var match; + + // Do we check for line continuation characters and "HERE-documents"? + var useLineCont = !!lineContinuationChar + var useHereDoc = !!hereDocDelim + + // create regexp to capture prompt and remaining line + if (isRegexp) { + regexp = new RegExp('^(' + copybuttonPromptText + ')(.*)') + } else { + regexp = new RegExp('^(' + escapeRegExp(copybuttonPromptText) + ')(.*)') + } + + const outputLines = []; + var promptFound = false; + var gotLineCont = false; + var gotHereDoc = false; + const lineGotPrompt = []; + for (const line of textContent.split('\n')) { + match = line.match(regexp) + if (match || gotLineCont || gotHereDoc) { + promptFound = regexp.test(line) + lineGotPrompt.push(promptFound) + if (removePrompts && promptFound) { + outputLines.push(match[2]) + } else { + outputLines.push(line) + } + gotLineCont = line.endsWith(lineContinuationChar) & useLineCont + if (line.includes(hereDocDelim) & useHereDoc) + gotHereDoc = !gotHereDoc + } else if (!onlyCopyPromptLines) { + outputLines.push(line) + } else if (copyEmptyLines && line.trim() === '') { + outputLines.push(line) + } + } + + // If no lines with the prompt were found then just use original lines + if (lineGotPrompt.some(v => v === true)) { + textContent = outputLines.join('\n'); + } + + // Remove a trailing newline to avoid auto-running when pasting + if (textContent.endsWith("\n")) { + textContent = textContent.slice(0, -1) + } + return textContent +} diff --git a/branch/main/_static/css/badge_only.css b/branch/main/_static/css/badge_only.css new file mode 100644 index 0000000..c718cee --- /dev/null +++ b/branch/main/_static/css/badge_only.css @@ 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+ return this; // for chaining... + } +})(jQuery); + +// NO good way to do this!. Copy a hack from here +// https://stackoverflow.com/questions/901115/how-can-i-get-query-string-values-in-javascript +// https://stackoverflow.com/a/2880929 +var urlParams; +(window.onpopstate = function () { + var match, + pl = /\+/g, // Regex for replacing addition symbol with a space + search = /([^&=]+)=?([^&]*)/g, + decode = function (s) { return decodeURIComponent(s.replace(pl, " ")); }, + query = window.location.search.substring(1); + urlParams = {}; + while (match = search.exec(query)) + urlParams[decode(match[1])] = decode(match[2]); +})(); + +// Select heading levels +var maxHeading = urlParams['h'] +if (maxHeading === undefined) maxHeading = 2 +var headingLevels = []; +for (h=2 ; h (sections.length-1) ) { + // if we would scroll past bottom, or above top, do nothing + return; + } + + console.log('xxxxxx'); + var targetSection = sections[targetPos]; + console.log(targetSection, typeof(targetSection)); + + // Return targetSection top and height + var secProperties = section_top_and_height(targetSection); + var top = secProperties['top']; + var height = secProperties['height'] + var win_height = window.innerHeight; + //console.info(top, height, win_height) + + var scroll_to = 0; + if (height >= win_height || height == 0) { + scroll_to = top; + } else { + scroll_to = top - (win_height-height)/3.; + } + //console.info(top, height, win_height, scroll_to) + + $('html, body').animate({ + scrollTop: scroll_to //+ 'px' + }, 'fast'); + +} + + +function minipres() { + /* Enable the minipres mode: + - call the hide() function + - set up the scrolling listener + */ + document.addEventListener('keydown', function (event) { + switch(event.which) { + case 37: // left + switch_slide(-1); + event.preventDefault(); + return false; + break; + //case 38: // up + case 39: // right + switch_slide(+1); + event.preventDefault(); + return false; + break; + //case 40: // down + default: + return; // exit this handler for other keys + } + }, true) + + hide() + + // Increase space between sections + //$("div .section").css('margin-bottom', '50%'); 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+} + +/* Pandas tables. Pulled from the Jupyter / nbsphinx CSS */ +div.cell_output table { + border: none; + border-collapse: collapse; + border-spacing: 0; + color: black; + font-size: 1em; + table-layout: fixed; +} + +div.cell_output thead { + border-bottom: 1px solid black; + vertical-align: bottom; +} + +div.cell_output tr, +div.cell_output th, +div.cell_output td { + text-align: right; + vertical-align: middle; + padding: 0.5em 0.5em; + line-height: normal; + white-space: normal; + max-width: none; + border: none; +} + +div.cell_output th { + font-weight: bold; +} + +div.cell_output tbody tr:nth-child(odd) { + background: #f5f5f5; +} + +div.cell_output tbody tr:hover { + background: rgba(66, 165, 245, 0.2); +} + +/** source code line numbers **/ +span.linenos { + opacity: 0.5; +} + +/* Inline text from `paste` operation */ + +span.pasted-text { + font-weight: bold; +} + +span.pasted-inline img { + max-height: 2em; +} + +tbody span.pasted-inline img { + max-height: none; +} + +/* Font colors for 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background-color: #E75C58 +} + +div.highlight .-Color[class*=-BGGreen] { + background-color: #00A250 +} + +div.highlight .-Color[class*=-BGYellow] { + background-color: #DDB62B +} + +div.highlight .-Color[class*=-BGBlue] { + background-color: #208FFB +} + +div.highlight .-Color[class*=-BGMagenta] { + background-color: #D160C4 +} + +div.highlight .-Color[class*=-BGCyan] { + background-color: #60C6C8 +} + +div.highlight .-Color[class*=-BGWhite] { + background-color: #C5C1B4 +} + +/* Font colors for 8-bit ANSI */ + +div.highlight .-Color[class*=-C0] { + color: #000000 +} + +div.highlight .-Color[class*=-BGC0] { + background-color: #000000 +} + +div.highlight .-Color[class*=-C1] { + color: #800000 +} + +div.highlight .-Color[class*=-BGC1] { + background-color: #800000 +} + +div.highlight .-Color[class*=-C2] { + color: #008000 +} + +div.highlight .-Color[class*=-BGC2] { + background-color: #008000 +} + +div.highlight .-Color[class*=-C3] { + color: #808000 +} + +div.highlight .-Color[class*=-BGC3] { + background-color: #808000 +} + +div.highlight .-Color[class*=-C4] { + color: #000080 +} + +div.highlight .-Color[class*=-BGC4] { + background-color: #000080 +} + +div.highlight .-Color[class*=-C5] { + color: #800080 +} + +div.highlight .-Color[class*=-BGC5] { + background-color: #800080 +} + +div.highlight .-Color[class*=-C6] { + color: #008080 +} + +div.highlight .-Color[class*=-BGC6] { + background-color: #008080 +} + +div.highlight .-Color[class*=-C7] { + color: #C0C0C0 +} + +div.highlight .-Color[class*=-BGC7] { + background-color: #C0C0C0 +} + +div.highlight .-Color[class*=-C8] { + color: #808080 +} + +div.highlight .-Color[class*=-BGC8] { + background-color: #808080 +} + +div.highlight .-Color[class*=-C9] { + color: #FF0000 +} + +div.highlight .-Color[class*=-BGC9] { + background-color: #FF0000 +} + +div.highlight .-Color[class*=-C10] { + color: #00FF00 +} + +div.highlight .-Color[class*=-BGC10] { + background-color: #00FF00 +} + +div.highlight .-Color[class*=-C11] { + color: #FFFF00 +} + +div.highlight .-Color[class*=-BGC11] { + background-color: #FFFF00 +} + +div.highlight .-Color[class*=-C12] { + color: #0000FF +} + +div.highlight .-Color[class*=-BGC12] { + background-color: #0000FF +} + +div.highlight .-Color[class*=-C13] { + color: #FF00FF +} + +div.highlight .-Color[class*=-BGC13] { + background-color: #FF00FF +} + +div.highlight .-Color[class*=-C14] { + color: #00FFFF +} + +div.highlight .-Color[class*=-BGC14] { + background-color: #00FFFF +} + +div.highlight .-Color[class*=-C15] { + color: #FFFFFF +} + +div.highlight .-Color[class*=-BGC15] { + background-color: #FFFFFF +} + +div.highlight .-Color[class*=-C16] { + color: #000000 +} + +div.highlight .-Color[class*=-BGC16] { + background-color: #000000 +} + +div.highlight .-Color[class*=-C17] { + color: #00005F +} + +div.highlight .-Color[class*=-BGC17] { + background-color: #00005F +} + +div.highlight .-Color[class*=-C18] { + color: #000087 +} + +div.highlight .-Color[class*=-BGC18] { + background-color: #000087 +} + +div.highlight .-Color[class*=-C19] { + color: #0000AF +} + +div.highlight .-Color[class*=-BGC19] { + background-color: #0000AF +} + +div.highlight .-Color[class*=-C20] { + color: #0000D7 +} + +div.highlight .-Color[class*=-BGC20] { + background-color: #0000D7 +} + +div.highlight .-Color[class*=-C21] { + color: #0000FF +} + +div.highlight .-Color[class*=-BGC21] { + background-color: #0000FF +} + +div.highlight .-Color[class*=-C22] { + color: #005F00 +} + +div.highlight .-Color[class*=-BGC22] { + background-color: #005F00 +} + +div.highlight .-Color[class*=-C23] { + color: #005F5F +} + +div.highlight .-Color[class*=-BGC23] { + background-color: #005F5F +} + +div.highlight .-Color[class*=-C24] { + color: #005F87 +} + +div.highlight .-Color[class*=-BGC24] { + background-color: #005F87 +} + +div.highlight .-Color[class*=-C25] { + color: #005FAF +} + +div.highlight .-Color[class*=-BGC25] { + background-color: #005FAF +} + +div.highlight .-Color[class*=-C26] { + color: #005FD7 +} + +div.highlight .-Color[class*=-BGC26] { + background-color: #005FD7 +} + +div.highlight .-Color[class*=-C27] { + color: #005FFF +} + +div.highlight .-Color[class*=-BGC27] { + background-color: #005FFF +} + +div.highlight .-Color[class*=-C28] { + color: #008700 +} + +div.highlight .-Color[class*=-BGC28] { + background-color: #008700 +} + +div.highlight .-Color[class*=-C29] { + color: #00875F +} + +div.highlight .-Color[class*=-BGC29] { + background-color: #00875F +} + +div.highlight .-Color[class*=-C30] { + color: #008787 +} + +div.highlight .-Color[class*=-BGC30] { + background-color: #008787 +} + +div.highlight .-Color[class*=-C31] { + color: #0087AF +} + +div.highlight .-Color[class*=-BGC31] { + background-color: #0087AF +} + +div.highlight .-Color[class*=-C32] { + color: #0087D7 +} + +div.highlight .-Color[class*=-BGC32] { + background-color: #0087D7 +} + +div.highlight .-Color[class*=-C33] { + color: #0087FF +} + +div.highlight .-Color[class*=-BGC33] { + background-color: #0087FF +} + +div.highlight .-Color[class*=-C34] { + color: #00AF00 +} + +div.highlight .-Color[class*=-BGC34] { + background-color: #00AF00 +} + +div.highlight .-Color[class*=-C35] { + color: #00AF5F +} + +div.highlight .-Color[class*=-BGC35] { + background-color: #00AF5F +} + +div.highlight .-Color[class*=-C36] { + color: #00AF87 +} + +div.highlight .-Color[class*=-BGC36] { + background-color: #00AF87 +} + +div.highlight .-Color[class*=-C37] { + color: #00AFAF +} + +div.highlight .-Color[class*=-BGC37] { + background-color: #00AFAF +} + +div.highlight .-Color[class*=-C38] { + color: #00AFD7 +} + +div.highlight .-Color[class*=-BGC38] { + background-color: #00AFD7 +} + +div.highlight .-Color[class*=-C39] { + color: #00AFFF +} + +div.highlight .-Color[class*=-BGC39] { + background-color: #00AFFF +} + +div.highlight .-Color[class*=-C40] { + color: #00D700 +} + +div.highlight .-Color[class*=-BGC40] { + background-color: #00D700 +} + +div.highlight .-Color[class*=-C41] { + color: #00D75F +} + +div.highlight .-Color[class*=-BGC41] { + background-color: #00D75F +} + +div.highlight .-Color[class*=-C42] { + color: #00D787 +} + +div.highlight .-Color[class*=-BGC42] { + background-color: #00D787 +} + +div.highlight .-Color[class*=-C43] { + color: #00D7AF +} + +div.highlight .-Color[class*=-BGC43] { + background-color: #00D7AF +} + +div.highlight .-Color[class*=-C44] { + color: #00D7D7 +} + +div.highlight .-Color[class*=-BGC44] { + background-color: #00D7D7 +} + +div.highlight .-Color[class*=-C45] { + color: #00D7FF +} + +div.highlight .-Color[class*=-BGC45] { + background-color: #00D7FF +} + +div.highlight .-Color[class*=-C46] { + color: #00FF00 +} + +div.highlight .-Color[class*=-BGC46] { + background-color: #00FF00 +} + +div.highlight .-Color[class*=-C47] { + color: #00FF5F +} + +div.highlight .-Color[class*=-BGC47] { + background-color: #00FF5F +} + +div.highlight .-Color[class*=-C48] { + color: #00FF87 +} + +div.highlight .-Color[class*=-BGC48] { + background-color: #00FF87 +} + +div.highlight .-Color[class*=-C49] { + color: #00FFAF +} + +div.highlight .-Color[class*=-BGC49] { + background-color: #00FFAF +} + +div.highlight .-Color[class*=-C50] { + color: #00FFD7 +} + +div.highlight .-Color[class*=-BGC50] { + background-color: #00FFD7 +} + +div.highlight .-Color[class*=-C51] { + color: #00FFFF +} + +div.highlight .-Color[class*=-BGC51] { + background-color: #00FFFF +} + +div.highlight .-Color[class*=-C52] { + color: #5F0000 +} + +div.highlight .-Color[class*=-BGC52] { + background-color: #5F0000 +} + +div.highlight .-Color[class*=-C53] { + color: #5F005F +} + +div.highlight .-Color[class*=-BGC53] { + background-color: #5F005F +} + +div.highlight .-Color[class*=-C54] { + color: #5F0087 +} + +div.highlight .-Color[class*=-BGC54] { + background-color: #5F0087 +} + +div.highlight .-Color[class*=-C55] { + color: #5F00AF +} + +div.highlight .-Color[class*=-BGC55] { + background-color: #5F00AF +} + +div.highlight .-Color[class*=-C56] { + color: #5F00D7 +} + +div.highlight .-Color[class*=-BGC56] { + background-color: #5F00D7 +} + +div.highlight .-Color[class*=-C57] { + color: #5F00FF +} + +div.highlight .-Color[class*=-BGC57] { + background-color: #5F00FF +} + +div.highlight .-Color[class*=-C58] { + color: #5F5F00 +} + +div.highlight .-Color[class*=-BGC58] { + background-color: #5F5F00 +} + +div.highlight .-Color[class*=-C59] { + color: #5F5F5F +} + +div.highlight .-Color[class*=-BGC59] { + background-color: #5F5F5F +} + +div.highlight .-Color[class*=-C60] { + color: #5F5F87 +} + +div.highlight .-Color[class*=-BGC60] { + background-color: #5F5F87 +} + +div.highlight .-Color[class*=-C61] { + color: #5F5FAF +} + +div.highlight .-Color[class*=-BGC61] { + background-color: #5F5FAF +} + +div.highlight .-Color[class*=-C62] { + color: #5F5FD7 +} + +div.highlight .-Color[class*=-BGC62] { + background-color: #5F5FD7 +} + +div.highlight .-Color[class*=-C63] { + color: #5F5FFF +} + +div.highlight .-Color[class*=-BGC63] { + background-color: #5F5FFF +} + +div.highlight .-Color[class*=-C64] { + color: #5F8700 +} + +div.highlight .-Color[class*=-BGC64] { + background-color: #5F8700 +} + +div.highlight .-Color[class*=-C65] { + color: #5F875F +} + +div.highlight .-Color[class*=-BGC65] { + background-color: #5F875F +} + +div.highlight .-Color[class*=-C66] { + color: #5F8787 +} + +div.highlight .-Color[class*=-BGC66] { + background-color: #5F8787 +} + +div.highlight .-Color[class*=-C67] { + color: #5F87AF +} + +div.highlight .-Color[class*=-BGC67] { + background-color: #5F87AF +} + +div.highlight .-Color[class*=-C68] { + color: #5F87D7 +} + +div.highlight .-Color[class*=-BGC68] { + background-color: #5F87D7 +} + +div.highlight .-Color[class*=-C69] { + color: #5F87FF +} + +div.highlight .-Color[class*=-BGC69] { + background-color: #5F87FF +} + +div.highlight .-Color[class*=-C70] { + color: #5FAF00 +} + +div.highlight .-Color[class*=-BGC70] { + background-color: #5FAF00 +} + +div.highlight .-Color[class*=-C71] { + color: #5FAF5F +} + +div.highlight .-Color[class*=-BGC71] { + background-color: #5FAF5F +} + +div.highlight .-Color[class*=-C72] { + color: #5FAF87 +} + +div.highlight .-Color[class*=-BGC72] { + background-color: #5FAF87 +} + +div.highlight .-Color[class*=-C73] { + color: #5FAFAF +} + +div.highlight .-Color[class*=-BGC73] { + background-color: #5FAFAF +} + +div.highlight .-Color[class*=-C74] { + color: #5FAFD7 +} + +div.highlight .-Color[class*=-BGC74] { + background-color: #5FAFD7 +} + +div.highlight .-Color[class*=-C75] { + color: #5FAFFF +} + +div.highlight .-Color[class*=-BGC75] { + background-color: #5FAFFF +} + +div.highlight .-Color[class*=-C76] { + color: #5FD700 +} + +div.highlight .-Color[class*=-BGC76] { + background-color: #5FD700 +} + +div.highlight .-Color[class*=-C77] { + color: #5FD75F +} + +div.highlight .-Color[class*=-BGC77] { + background-color: #5FD75F +} + +div.highlight .-Color[class*=-C78] { + color: #5FD787 +} + +div.highlight .-Color[class*=-BGC78] { + background-color: #5FD787 +} + +div.highlight .-Color[class*=-C79] { + color: #5FD7AF +} + +div.highlight .-Color[class*=-BGC79] { + background-color: #5FD7AF +} + +div.highlight .-Color[class*=-C80] { + color: #5FD7D7 +} + +div.highlight .-Color[class*=-BGC80] { + background-color: #5FD7D7 +} + +div.highlight .-Color[class*=-C81] { + color: #5FD7FF +} + +div.highlight .-Color[class*=-BGC81] { + background-color: #5FD7FF +} + +div.highlight .-Color[class*=-C82] { + color: #5FFF00 +} + +div.highlight .-Color[class*=-BGC82] { + background-color: #5FFF00 +} + +div.highlight .-Color[class*=-C83] { + color: #5FFF5F +} + +div.highlight .-Color[class*=-BGC83] { + background-color: #5FFF5F +} + +div.highlight .-Color[class*=-C84] { + color: #5FFF87 +} + +div.highlight .-Color[class*=-BGC84] { + background-color: #5FFF87 +} + +div.highlight .-Color[class*=-C85] { + color: #5FFFAF +} + +div.highlight .-Color[class*=-BGC85] { + background-color: #5FFFAF +} + +div.highlight .-Color[class*=-C86] { + color: #5FFFD7 +} + +div.highlight .-Color[class*=-BGC86] { + background-color: #5FFFD7 +} + +div.highlight .-Color[class*=-C87] { + color: #5FFFFF +} + +div.highlight .-Color[class*=-BGC87] { + background-color: #5FFFFF +} + +div.highlight .-Color[class*=-C88] { + color: #870000 +} + +div.highlight .-Color[class*=-BGC88] { + background-color: #870000 +} + +div.highlight .-Color[class*=-C89] { + color: #87005F +} + +div.highlight .-Color[class*=-BGC89] { + background-color: #87005F +} + +div.highlight .-Color[class*=-C90] { + color: #870087 +} + +div.highlight .-Color[class*=-BGC90] { + background-color: #870087 +} + +div.highlight .-Color[class*=-C91] { + color: #8700AF +} + +div.highlight .-Color[class*=-BGC91] { + background-color: #8700AF +} + +div.highlight .-Color[class*=-C92] { + color: #8700D7 +} + +div.highlight .-Color[class*=-BGC92] { + background-color: #8700D7 +} + +div.highlight .-Color[class*=-C93] { + color: #8700FF +} + +div.highlight .-Color[class*=-BGC93] { + background-color: #8700FF +} + +div.highlight .-Color[class*=-C94] { + color: #875F00 +} + +div.highlight .-Color[class*=-BGC94] { + background-color: #875F00 +} + +div.highlight .-Color[class*=-C95] { + color: #875F5F +} + +div.highlight .-Color[class*=-BGC95] { + background-color: #875F5F +} + +div.highlight .-Color[class*=-C96] { + color: #875F87 +} + +div.highlight .-Color[class*=-BGC96] { + background-color: #875F87 +} + +div.highlight .-Color[class*=-C97] { + color: #875FAF +} + +div.highlight .-Color[class*=-BGC97] { + background-color: #875FAF +} + +div.highlight .-Color[class*=-C98] { + color: #875FD7 +} + +div.highlight .-Color[class*=-BGC98] { + background-color: #875FD7 +} + +div.highlight .-Color[class*=-C99] { + color: #875FFF +} + +div.highlight .-Color[class*=-BGC99] { + background-color: #875FFF +} + +div.highlight .-Color[class*=-C100] { + color: #878700 +} + +div.highlight .-Color[class*=-BGC100] { + background-color: #878700 +} + +div.highlight .-Color[class*=-C101] { + color: #87875F +} + +div.highlight .-Color[class*=-BGC101] { + background-color: #87875F +} + +div.highlight .-Color[class*=-C102] { + color: #878787 +} + +div.highlight .-Color[class*=-BGC102] { + background-color: #878787 +} + +div.highlight .-Color[class*=-C103] { + color: #8787AF +} + +div.highlight .-Color[class*=-BGC103] { + background-color: #8787AF +} + +div.highlight .-Color[class*=-C104] { + color: #8787D7 +} + +div.highlight .-Color[class*=-BGC104] { + background-color: #8787D7 +} + +div.highlight .-Color[class*=-C105] { + color: #8787FF +} + +div.highlight .-Color[class*=-BGC105] { + background-color: #8787FF +} + +div.highlight .-Color[class*=-C106] { + color: #87AF00 +} + +div.highlight .-Color[class*=-BGC106] { + background-color: #87AF00 +} + +div.highlight .-Color[class*=-C107] { + color: #87AF5F +} + +div.highlight .-Color[class*=-BGC107] { + background-color: #87AF5F +} + +div.highlight .-Color[class*=-C108] { + color: #87AF87 +} + +div.highlight .-Color[class*=-BGC108] { + background-color: #87AF87 +} + +div.highlight .-Color[class*=-C109] { + color: #87AFAF +} + +div.highlight .-Color[class*=-BGC109] { + background-color: #87AFAF +} + +div.highlight .-Color[class*=-C110] { + color: #87AFD7 +} + +div.highlight .-Color[class*=-BGC110] { + background-color: #87AFD7 +} + +div.highlight .-Color[class*=-C111] { + color: #87AFFF +} + +div.highlight .-Color[class*=-BGC111] { + background-color: #87AFFF +} + +div.highlight .-Color[class*=-C112] { + color: #87D700 +} + +div.highlight .-Color[class*=-BGC112] { + background-color: #87D700 +} + +div.highlight .-Color[class*=-C113] { + color: #87D75F +} + +div.highlight .-Color[class*=-BGC113] { + background-color: #87D75F +} + +div.highlight .-Color[class*=-C114] { + color: #87D787 +} + +div.highlight .-Color[class*=-BGC114] { + background-color: #87D787 +} + +div.highlight .-Color[class*=-C115] { + color: #87D7AF +} + +div.highlight .-Color[class*=-BGC115] { + background-color: #87D7AF +} + +div.highlight .-Color[class*=-C116] { + color: #87D7D7 +} + +div.highlight .-Color[class*=-BGC116] { + background-color: #87D7D7 +} + +div.highlight .-Color[class*=-C117] { + color: #87D7FF +} + +div.highlight .-Color[class*=-BGC117] { + background-color: #87D7FF +} + +div.highlight .-Color[class*=-C118] { + color: #87FF00 +} + +div.highlight .-Color[class*=-BGC118] { + background-color: #87FF00 +} + +div.highlight .-Color[class*=-C119] { + color: #87FF5F +} + +div.highlight .-Color[class*=-BGC119] { + background-color: #87FF5F +} + +div.highlight .-Color[class*=-C120] { + color: #87FF87 +} + +div.highlight .-Color[class*=-BGC120] { + background-color: #87FF87 +} + +div.highlight .-Color[class*=-C121] { + color: #87FFAF +} + +div.highlight .-Color[class*=-BGC121] { + background-color: #87FFAF +} + +div.highlight .-Color[class*=-C122] { + color: #87FFD7 +} + +div.highlight .-Color[class*=-BGC122] { + background-color: #87FFD7 +} + +div.highlight .-Color[class*=-C123] { + color: #87FFFF +} + +div.highlight .-Color[class*=-BGC123] { + background-color: #87FFFF +} + +div.highlight .-Color[class*=-C124] { + color: #AF0000 +} + +div.highlight .-Color[class*=-BGC124] { + background-color: #AF0000 +} + +div.highlight .-Color[class*=-C125] { + color: #AF005F +} + +div.highlight .-Color[class*=-BGC125] { + background-color: #AF005F +} + +div.highlight .-Color[class*=-C126] { + color: #AF0087 +} + +div.highlight .-Color[class*=-BGC126] { + background-color: #AF0087 +} + +div.highlight .-Color[class*=-C127] { + color: #AF00AF +} + +div.highlight .-Color[class*=-BGC127] { + background-color: #AF00AF +} + +div.highlight .-Color[class*=-C128] { + color: #AF00D7 +} + +div.highlight .-Color[class*=-BGC128] { + background-color: #AF00D7 +} + +div.highlight .-Color[class*=-C129] { + color: #AF00FF +} + +div.highlight .-Color[class*=-BGC129] { + background-color: #AF00FF +} + +div.highlight .-Color[class*=-C130] { + color: #AF5F00 +} + +div.highlight .-Color[class*=-BGC130] { + background-color: #AF5F00 +} + +div.highlight .-Color[class*=-C131] { + color: #AF5F5F +} + +div.highlight .-Color[class*=-BGC131] { + background-color: #AF5F5F +} + +div.highlight .-Color[class*=-C132] { + color: #AF5F87 +} + +div.highlight .-Color[class*=-BGC132] { + background-color: #AF5F87 +} + +div.highlight .-Color[class*=-C133] { + color: #AF5FAF +} + +div.highlight .-Color[class*=-BGC133] { + background-color: #AF5FAF +} + +div.highlight .-Color[class*=-C134] { + color: #AF5FD7 +} + +div.highlight .-Color[class*=-BGC134] { + background-color: #AF5FD7 +} + +div.highlight .-Color[class*=-C135] { + color: #AF5FFF +} + +div.highlight .-Color[class*=-BGC135] { + background-color: #AF5FFF +} + +div.highlight .-Color[class*=-C136] { + color: #AF8700 +} + +div.highlight .-Color[class*=-BGC136] { + background-color: #AF8700 +} + +div.highlight .-Color[class*=-C137] { + color: #AF875F +} + +div.highlight .-Color[class*=-BGC137] { + background-color: #AF875F +} + +div.highlight .-Color[class*=-C138] { + color: #AF8787 +} + +div.highlight .-Color[class*=-BGC138] { + background-color: #AF8787 +} + +div.highlight .-Color[class*=-C139] { + color: #AF87AF +} + +div.highlight .-Color[class*=-BGC139] { + background-color: #AF87AF +} + +div.highlight .-Color[class*=-C140] { + color: #AF87D7 +} + +div.highlight .-Color[class*=-BGC140] { + background-color: #AF87D7 +} + +div.highlight .-Color[class*=-C141] { + color: #AF87FF +} + +div.highlight .-Color[class*=-BGC141] { + background-color: #AF87FF +} + +div.highlight .-Color[class*=-C142] { + color: #AFAF00 +} + +div.highlight .-Color[class*=-BGC142] { + background-color: #AFAF00 +} + +div.highlight .-Color[class*=-C143] { + color: #AFAF5F +} + +div.highlight .-Color[class*=-BGC143] { + background-color: #AFAF5F +} + +div.highlight .-Color[class*=-C144] { + color: #AFAF87 +} + +div.highlight .-Color[class*=-BGC144] { + background-color: #AFAF87 +} + +div.highlight 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score, filename] = result + return score + }, + */ + + // query matches the full name of an object + objNameMatch: 11, + // or matches in the last dotted part of the object name + objPartialMatch: 6, + // Additive scores depending on the priority of the object + objPrio: { + 0: 15, // used to be importantResults + 1: 5, // used to be objectResults + 2: -5, // used to be unimportantResults + }, + // Used when the priority is not in the mapping. + objPrioDefault: 0, + + // query found in title + title: 15, + partialTitle: 7, + // query found in terms + term: 5, + partialTerm: 2, + }; +} + +const _removeChildren = (element) => { + while (element && element.lastChild) element.removeChild(element.lastChild); +}; + +/** + * See https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions#escaping + */ +const _escapeRegExp = (string) => + string.replace(/[.*+\-?^${}()|[\]\\]/g, "\\$&"); // $& means the whole matched string + +const _displayItem = (item, searchTerms, highlightTerms) => { + const docBuilder = DOCUMENTATION_OPTIONS.BUILDER; + const docFileSuffix = DOCUMENTATION_OPTIONS.FILE_SUFFIX; + const docLinkSuffix = DOCUMENTATION_OPTIONS.LINK_SUFFIX; + const showSearchSummary = DOCUMENTATION_OPTIONS.SHOW_SEARCH_SUMMARY; + const contentRoot = document.documentElement.dataset.content_root; + + const [docName, title, anchor, descr, score, _filename] = item; + + let listItem = document.createElement("li"); + let requestUrl; + let linkUrl; + if (docBuilder === "dirhtml") { + // dirhtml builder + let dirname = docName + "/"; + if (dirname.match(/\/index\/$/)) + dirname = dirname.substring(0, dirname.length - 6); + else if (dirname === "index/") dirname = ""; + requestUrl = contentRoot + dirname; + linkUrl = requestUrl; + } else { + // normal html builders + requestUrl = contentRoot + docName + docFileSuffix; + linkUrl = docName + docLinkSuffix; + } + let linkEl = listItem.appendChild(document.createElement("a")); + linkEl.href = linkUrl + anchor; + linkEl.dataset.score = score; + linkEl.innerHTML = title; + if (descr) { + listItem.appendChild(document.createElement("span")).innerHTML = + " (" + descr + ")"; + // highlight search terms in the description + if (SPHINX_HIGHLIGHT_ENABLED) // set in sphinx_highlight.js + highlightTerms.forEach((term) => _highlightText(listItem, term, "highlighted")); + } + else if (showSearchSummary) + fetch(requestUrl) + .then((responseData) => responseData.text()) + .then((data) => { + if (data) + listItem.appendChild( + Search.makeSearchSummary(data, searchTerms, anchor) + ); + // highlight search terms in the summary + if (SPHINX_HIGHLIGHT_ENABLED) // set in sphinx_highlight.js + highlightTerms.forEach((term) => _highlightText(listItem, term, "highlighted")); + }); + Search.output.appendChild(listItem); +}; +const _finishSearch = (resultCount) => { + Search.stopPulse(); + Search.title.innerText = _("Search Results"); + if (!resultCount) + Search.status.innerText = Documentation.gettext( + "Your search did not match any documents. Please make sure that all words are spelled correctly and that you've selected enough categories." + ); + else + Search.status.innerText = _( + "Search finished, found ${resultCount} page(s) matching the search query." + ).replace('${resultCount}', resultCount); +}; +const _displayNextItem = ( + results, + resultCount, + searchTerms, + highlightTerms, +) => { + // results left, load the summary and display it + // this is intended to be dynamic (don't sub resultsCount) + if (results.length) { + _displayItem(results.pop(), searchTerms, highlightTerms); + setTimeout( + () => _displayNextItem(results, resultCount, searchTerms, highlightTerms), + 5 + ); + } + // search finished, update title and status message + else _finishSearch(resultCount); +}; +// Helper function used by query() to order search results. +// Each input is an array of [docname, title, anchor, descr, score, filename]. +// Order the results by score (in opposite order of appearance, since the +// `_displayNextItem` function uses pop() to retrieve items) and then alphabetically. +const _orderResultsByScoreThenName = (a, b) => { + const leftScore = a[4]; + const rightScore = b[4]; + if (leftScore === rightScore) { + // same score: sort alphabetically + const leftTitle = a[1].toLowerCase(); + const rightTitle = b[1].toLowerCase(); + if (leftTitle === rightTitle) return 0; + return leftTitle > rightTitle ? -1 : 1; // inverted is intentional + } + return leftScore > rightScore ? 1 : -1; +}; + +/** + * Default splitQuery function. Can be overridden in ``sphinx.search`` with a + * custom function per language. + * + * The regular expression works by splitting the string on consecutive characters + * that are not Unicode letters, numbers, underscores, or emoji characters. + * This is the same as ``\W+`` in Python, preserving the surrogate pair area. + */ +if (typeof splitQuery === "undefined") { + var splitQuery = (query) => query + .split(/[^\p{Letter}\p{Number}_\p{Emoji_Presentation}]+/gu) + .filter(term => term) // remove remaining empty strings +} + +/** + * Search Module + */ +const Search = { + _index: null, + _queued_query: null, + _pulse_status: -1, + + htmlToText: (htmlString, anchor) => { + const htmlElement = new DOMParser().parseFromString(htmlString, 'text/html'); + for (const removalQuery of [".headerlink", "script", "style"]) { + htmlElement.querySelectorAll(removalQuery).forEach((el) => { el.remove() }); + } + if (anchor) { + const anchorContent = htmlElement.querySelector(`[role="main"] ${anchor}`); + if (anchorContent) return anchorContent.textContent; + + console.warn( + `Anchored content block not found. Sphinx search tries to obtain it via DOM query '[role=main] ${anchor}'. Check your theme or template.` + ); + } + + // if anchor not specified or not found, fall back to main content + const docContent = htmlElement.querySelector('[role="main"]'); + if (docContent) return docContent.textContent; + + console.warn( + "Content block not found. Sphinx search tries to obtain it via DOM query '[role=main]'. Check your theme or template." + ); + return ""; + }, + + init: () => { + const query = new URLSearchParams(window.location.search).get("q"); + document + .querySelectorAll('input[name="q"]') + .forEach((el) => (el.value = query)); + if (query) Search.performSearch(query); + }, + + loadIndex: (url) => + (document.body.appendChild(document.createElement("script")).src = url), + + setIndex: (index) => { + Search._index = index; + if (Search._queued_query !== null) { + const query = Search._queued_query; + Search._queued_query = null; + Search.query(query); + } + }, + + hasIndex: () => Search._index !== null, + + deferQuery: (query) => (Search._queued_query = query), + + stopPulse: () => (Search._pulse_status = -1), + + startPulse: () => { + if (Search._pulse_status >= 0) return; + + const pulse = () => { + Search._pulse_status = (Search._pulse_status + 1) % 4; + Search.dots.innerText = ".".repeat(Search._pulse_status); + if (Search._pulse_status >= 0) window.setTimeout(pulse, 500); + }; + pulse(); + }, + + /** + * perform a search for something (or wait until index is loaded) + */ + performSearch: (query) => { + // create the required interface elements + const searchText = document.createElement("h2"); + searchText.textContent = _("Searching"); + const searchSummary = document.createElement("p"); + searchSummary.classList.add("search-summary"); + searchSummary.innerText = ""; + const searchList = document.createElement("ul"); + searchList.classList.add("search"); + + const out = document.getElementById("search-results"); + Search.title = out.appendChild(searchText); + Search.dots = Search.title.appendChild(document.createElement("span")); + Search.status = out.appendChild(searchSummary); + Search.output = out.appendChild(searchList); + + const searchProgress = document.getElementById("search-progress"); + // Some themes don't use the search progress node + if (searchProgress) { + searchProgress.innerText = _("Preparing search..."); + } + Search.startPulse(); + + // index already loaded, the browser was quick! + if (Search.hasIndex()) Search.query(query); + else Search.deferQuery(query); + }, + + _parseQuery: (query) => { + // stem the search terms and add them to the correct list + const stemmer = new Stemmer(); + const searchTerms = new Set(); + const excludedTerms = new Set(); + const highlightTerms = new Set(); + const objectTerms = new Set(splitQuery(query.toLowerCase().trim())); + splitQuery(query.trim()).forEach((queryTerm) => { + const queryTermLower = queryTerm.toLowerCase(); + + // maybe skip this "word" + // stopwords array is from language_data.js + if ( + stopwords.indexOf(queryTermLower) !== -1 || + queryTerm.match(/^\d+$/) + ) + return; + + // stem the word + let word = stemmer.stemWord(queryTermLower); + // select the correct list + if (word[0] === "-") excludedTerms.add(word.substr(1)); + else { + searchTerms.add(word); + highlightTerms.add(queryTermLower); + } + }); + + if (SPHINX_HIGHLIGHT_ENABLED) { // set in sphinx_highlight.js + localStorage.setItem("sphinx_highlight_terms", [...highlightTerms].join(" ")) + } + + // console.debug("SEARCH: searching for:"); + // console.info("required: ", [...searchTerms]); + // console.info("excluded: ", [...excludedTerms]); + + return [query, searchTerms, excludedTerms, highlightTerms, objectTerms]; + }, + + /** + * execute search (requires search index to be loaded) + */ + _performSearch: (query, searchTerms, excludedTerms, highlightTerms, objectTerms) => { + const filenames = Search._index.filenames; + const docNames = Search._index.docnames; + const titles = Search._index.titles; + const allTitles = Search._index.alltitles; + const indexEntries = Search._index.indexentries; + + // Collect multiple result groups to be sorted separately and then ordered. + // Each is an array of [docname, title, anchor, descr, score, filename]. + const normalResults = []; + const nonMainIndexResults = []; + + _removeChildren(document.getElementById("search-progress")); + + const queryLower = query.toLowerCase().trim(); + for (const [title, foundTitles] of Object.entries(allTitles)) { + if (title.toLowerCase().trim().includes(queryLower) && (queryLower.length >= title.length/2)) { + for (const [file, id] of foundTitles) { + const score = Math.round(Scorer.title * queryLower.length / title.length); + const boost = titles[file] === title ? 1 : 0; // add a boost for document titles + normalResults.push([ + docNames[file], + titles[file] !== title ? `${titles[file]} > ${title}` : title, + id !== null ? "#" + id : "", + null, + score + boost, + filenames[file], + ]); + } + } + } + + // search for explicit entries in index directives + for (const [entry, foundEntries] of Object.entries(indexEntries)) { + if (entry.includes(queryLower) && (queryLower.length >= entry.length/2)) { + for (const [file, id, isMain] of foundEntries) { + const score = Math.round(100 * queryLower.length / entry.length); + const result = [ + docNames[file], + titles[file], + id ? "#" + id : "", + null, + score, + filenames[file], + ]; + if (isMain) { + normalResults.push(result); + } else { + nonMainIndexResults.push(result); + } + } + } + } + + // lookup as object + objectTerms.forEach((term) => + normalResults.push(...Search.performObjectSearch(term, objectTerms)) + ); + + // lookup as search terms in fulltext + normalResults.push(...Search.performTermsSearch(searchTerms, excludedTerms)); + + // let the scorer override scores with a custom scoring function + if (Scorer.score) { + normalResults.forEach((item) => (item[4] = Scorer.score(item))); + nonMainIndexResults.forEach((item) => (item[4] = Scorer.score(item))); + } + + // Sort each group of results by score and then alphabetically by name. + normalResults.sort(_orderResultsByScoreThenName); + nonMainIndexResults.sort(_orderResultsByScoreThenName); + + // Combine the result groups in (reverse) order. + // Non-main index entries are typically arbitrary cross-references, + // so display them after other results. + let results = [...nonMainIndexResults, ...normalResults]; + + // remove duplicate search results + // note the reversing of results, so that in the case of duplicates, the highest-scoring entry is kept + let seen = new Set(); + results = results.reverse().reduce((acc, result) => { + let resultStr = result.slice(0, 4).concat([result[5]]).map(v => String(v)).join(','); + if (!seen.has(resultStr)) { + acc.push(result); + seen.add(resultStr); + } + return acc; + }, []); + + return results.reverse(); + }, + + query: (query) => { + const [searchQuery, searchTerms, excludedTerms, highlightTerms, objectTerms] = Search._parseQuery(query); + const results = Search._performSearch(searchQuery, searchTerms, excludedTerms, highlightTerms, objectTerms); + + // for debugging + //Search.lastresults = results.slice(); // a copy + // console.info("search results:", Search.lastresults); + + // print the results + _displayNextItem(results, results.length, searchTerms, highlightTerms); + }, + + /** + * search for object names + */ + performObjectSearch: (object, objectTerms) => { + const filenames = Search._index.filenames; + const docNames = Search._index.docnames; + const objects = Search._index.objects; + const objNames = Search._index.objnames; + const titles = Search._index.titles; + + const results = []; + + const objectSearchCallback = (prefix, match) => { + const name = match[4] + const fullname = (prefix ? prefix + "." : "") + name; + const fullnameLower = fullname.toLowerCase(); + if (fullnameLower.indexOf(object) < 0) return; + + let score = 0; + const parts = fullnameLower.split("."); + + // check for different match types: exact matches of full name or + // "last name" (i.e. last dotted part) + if (fullnameLower === object || parts.slice(-1)[0] === object) + score += Scorer.objNameMatch; + else if (parts.slice(-1)[0].indexOf(object) > -1) + score += Scorer.objPartialMatch; // matches in last name + + const objName = objNames[match[1]][2]; + const title = titles[match[0]]; + + // If more than one term searched for, we require other words to be + // found in the name/title/description + const otherTerms = new Set(objectTerms); + otherTerms.delete(object); + if (otherTerms.size > 0) { + const haystack = `${prefix} ${name} ${objName} ${title}`.toLowerCase(); + if ( + [...otherTerms].some((otherTerm) => haystack.indexOf(otherTerm) < 0) + ) + return; + } + + let anchor = match[3]; + if (anchor === "") anchor = fullname; + else if (anchor === "-") anchor = objNames[match[1]][1] + "-" + fullname; + + const descr = objName + _(", in ") + title; + + // add custom score for some objects according to scorer + if (Scorer.objPrio.hasOwnProperty(match[2])) + score += Scorer.objPrio[match[2]]; + else score += Scorer.objPrioDefault; + + results.push([ + docNames[match[0]], + fullname, + "#" + anchor, + descr, + score, + filenames[match[0]], + ]); + }; + Object.keys(objects).forEach((prefix) => + objects[prefix].forEach((array) => + objectSearchCallback(prefix, array) + ) + ); + return results; + }, + + /** + * search for full-text terms in the index + */ + performTermsSearch: (searchTerms, excludedTerms) => { + // prepare search + const terms = Search._index.terms; + const titleTerms = Search._index.titleterms; + const filenames = Search._index.filenames; + const docNames = Search._index.docnames; + const titles = Search._index.titles; + + const scoreMap = new Map(); + const fileMap = new Map(); + + // perform the search on the required terms + searchTerms.forEach((word) => { + const files = []; + const arr = [ + { files: terms[word], score: Scorer.term }, + { files: titleTerms[word], score: Scorer.title }, + ]; + // add support for partial matches + if (word.length > 2) { + const escapedWord = _escapeRegExp(word); + if (!terms.hasOwnProperty(word)) { + Object.keys(terms).forEach((term) => { + if (term.match(escapedWord)) + arr.push({ files: terms[term], score: Scorer.partialTerm }); + }); + } + if (!titleTerms.hasOwnProperty(word)) { + Object.keys(titleTerms).forEach((term) => { + if (term.match(escapedWord)) + arr.push({ files: titleTerms[term], score: Scorer.partialTitle }); + }); + } + } + + // no match but word was a required one + if (arr.every((record) => record.files === undefined)) return; + + // found search word in contents + arr.forEach((record) => { + if (record.files === undefined) return; + + let recordFiles = record.files; + if (recordFiles.length === undefined) recordFiles = [recordFiles]; + files.push(...recordFiles); + + // set score for the word in each file + recordFiles.forEach((file) => { + if (!scoreMap.has(file)) scoreMap.set(file, {}); + scoreMap.get(file)[word] = record.score; + }); + }); + + // create the mapping + files.forEach((file) => { + if (!fileMap.has(file)) fileMap.set(file, [word]); + else if (fileMap.get(file).indexOf(word) === -1) fileMap.get(file).push(word); + }); + }); + + // now check if the files don't contain excluded terms + const results = []; + for (const [file, wordList] of fileMap) { + // check if all requirements are matched + + // as search terms with length < 3 are discarded + const filteredTermCount = [...searchTerms].filter( + (term) => term.length > 2 + ).length; + if ( + wordList.length !== searchTerms.size && + wordList.length !== filteredTermCount + ) + continue; + + // ensure that none of the excluded terms is in the search result + if ( + [...excludedTerms].some( + (term) => + terms[term] === file || + titleTerms[term] === file || + (terms[term] || []).includes(file) || + (titleTerms[term] || []).includes(file) + ) + ) + break; + + // select one (max) score for the file. + const score = Math.max(...wordList.map((w) => scoreMap.get(file)[w])); + // add result to the result list + results.push([ + docNames[file], + titles[file], + "", + null, + score, + filenames[file], + ]); + } + return results; + }, + + /** + * helper function to return a node containing the + * search summary for a given text. keywords is a list + * of stemmed words. + */ + makeSearchSummary: (htmlText, keywords, anchor) => { + const text = Search.htmlToText(htmlText, anchor); + if (text === "") return null; + + const textLower = text.toLowerCase(); + const actualStartPosition = [...keywords] + .map((k) => textLower.indexOf(k.toLowerCase())) + .filter((i) => i > -1) + .slice(-1)[0]; + const startWithContext = Math.max(actualStartPosition - 120, 0); + + const top = startWithContext === 0 ? "" : "..."; + const tail = startWithContext + 240 < text.length ? "..." : ""; + + let summary = document.createElement("p"); + summary.classList.add("context"); + summary.textContent = top + text.substr(startWithContext, 240).trim() + tail; + + return summary; + }, +}; + +_ready(Search.init); diff --git a/branch/main/_static/sphinx_highlight.js b/branch/main/_static/sphinx_highlight.js new file mode 100644 index 0000000..8a96c69 --- /dev/null +++ b/branch/main/_static/sphinx_highlight.js @@ -0,0 +1,154 @@ +/* Highlighting utilities for Sphinx HTML documentation. */ +"use strict"; + +const SPHINX_HIGHLIGHT_ENABLED = true + +/** + * highlight a given string on a node by wrapping it in + * span elements with the given class name. + */ +const _highlight = (node, addItems, text, className) => { + if (node.nodeType === Node.TEXT_NODE) { + const val = node.nodeValue; + const parent = node.parentNode; + const pos = val.toLowerCase().indexOf(text); + if ( + pos >= 0 && + !parent.classList.contains(className) && + !parent.classList.contains("nohighlight") + ) { + let span; + + const closestNode = parent.closest("body, svg, foreignObject"); + const isInSVG = closestNode && closestNode.matches("svg"); + if (isInSVG) { + span = document.createElementNS("http://www.w3.org/2000/svg", "tspan"); + } else { + span = document.createElement("span"); + span.classList.add(className); + } + + span.appendChild(document.createTextNode(val.substr(pos, text.length))); + const rest = document.createTextNode(val.substr(pos + text.length)); + parent.insertBefore( + span, + parent.insertBefore( + rest, + node.nextSibling + ) + ); + node.nodeValue = val.substr(0, pos); + /* There may be more occurrences of search term in this node. So call this + * function recursively on the remaining fragment. + */ + _highlight(rest, addItems, text, className); + + if (isInSVG) { + const rect = document.createElementNS( + "http://www.w3.org/2000/svg", + "rect" + ); + const bbox = parent.getBBox(); + rect.x.baseVal.value = bbox.x; + rect.y.baseVal.value = bbox.y; + rect.width.baseVal.value = bbox.width; + rect.height.baseVal.value = bbox.height; + rect.setAttribute("class", className); + addItems.push({ parent: parent, target: rect }); + } + } + } else if (node.matches && !node.matches("button, select, textarea")) { + node.childNodes.forEach((el) => _highlight(el, addItems, text, className)); + } +}; +const _highlightText = (thisNode, text, className) => { + let addItems = []; + _highlight(thisNode, addItems, text, className); + addItems.forEach((obj) => + obj.parent.insertAdjacentElement("beforebegin", obj.target) + ); +}; + +/** + * Small JavaScript module for the documentation. + */ +const SphinxHighlight = { + + /** + * highlight the search words provided in localstorage in the text + */ + highlightSearchWords: () => { + if (!SPHINX_HIGHLIGHT_ENABLED) return; // bail if no highlight + + // get and clear terms from localstorage + const url = new URL(window.location); + const highlight = + localStorage.getItem("sphinx_highlight_terms") + || url.searchParams.get("highlight") + || ""; + localStorage.removeItem("sphinx_highlight_terms") + url.searchParams.delete("highlight"); + window.history.replaceState({}, "", url); + + // get individual terms from highlight string + const terms = highlight.toLowerCase().split(/\s+/).filter(x => x); + if (terms.length === 0) return; // nothing to do + + // There should never be more than one element matching "div.body" + const divBody = document.querySelectorAll("div.body"); + const body = divBody.length ? divBody[0] : document.querySelector("body"); + window.setTimeout(() => { + terms.forEach((term) => _highlightText(body, term, "highlighted")); + }, 10); + + const searchBox = document.getElementById("searchbox"); + if (searchBox === null) return; + searchBox.appendChild( + document + .createRange() + .createContextualFragment( + '

' + + '' + + _("Hide Search Matches") + + "

" + ) + ); + }, + + /** + * helper function to hide the search marks again + */ + hideSearchWords: () => { + document + .querySelectorAll("#searchbox .highlight-link") + .forEach((el) => el.remove()); + document + .querySelectorAll("span.highlighted") + .forEach((el) => el.classList.remove("highlighted")); + localStorage.removeItem("sphinx_highlight_terms") + }, + + initEscapeListener: () => { + // only install a listener if it is really needed + if (!DOCUMENTATION_OPTIONS.ENABLE_SEARCH_SHORTCUTS) return; + + document.addEventListener("keydown", (event) => { + // bail for input elements + if (BLACKLISTED_KEY_CONTROL_ELEMENTS.has(document.activeElement.tagName)) return; + // bail with special keys + if (event.shiftKey || event.altKey || event.ctrlKey || event.metaKey) return; + if (DOCUMENTATION_OPTIONS.ENABLE_SEARCH_SHORTCUTS && (event.key === "Escape")) { + SphinxHighlight.hideSearchWords(); + event.preventDefault(); + } + }); + }, +}; + +_ready(() => { + /* Do not call highlightSearchWords() when we are on the search page. + * It will highlight words from the *previous* search query. + */ + if (typeof Search === "undefined") SphinxHighlight.highlightSearchWords(); + SphinxHighlight.initEscapeListener(); +}); diff --git a/branch/main/_static/sphinx_lesson.css b/branch/main/_static/sphinx_lesson.css new file mode 100644 index 0000000..14b20c6 --- /dev/null +++ b/branch/main/_static/sphinx_lesson.css @@ -0,0 +1,51 @@ +/* sphinx_lesson.css */ + +body.wy-body-for-nav img.with-border { + border: 2px solid; +} + +.rst-content .admonition-no-content { + padding-bottom: 0px; +} + +.rst-content .demo > .admonition-title::before { + content: "\01F440"; /* Eyes */ } +.rst-content .type-along > .admonition-title::before { + content: "\02328\0FE0F"; /* Keyboard */ } +.rst-content .exercise > .admonition-title::before { + content: "\0270D\0FE0F"; /* Hand */ } +.rst-content .solution > .admonition-title::before { + content: "\02714\0FE0E"; /* Check mark */ } +.rst-content .homework > .admonition-title::before { + content: "\01F4DD"; /* Memo */ } +.rst-content .discussion > .admonition-title::before { + content: "\01F4AC"; /* Speech balloon */ } +.rst-content .questions > .admonition-title::before { + content: "\02753\0FE0E"; /* Question mark */ } +.rst-content .prerequisites > .admonition-title::before { + content: "\02699"; /* Gear */ } +.rst-content .seealso > .admonition-title::before { + content: "\027A1\0FE0E"; /* Question mark */ } + + +/* instructor-note */ +.rst-content .instructor-note { + background: #e7e7e7; +} +.rst-content .instructor-note > .admonition-title { + background: #6a6a6a; +} +.rst-content .instructor-note > .admonition-title::before { + content: ""; +} + + +/* sphinx_toggle_button, make the font white */ +.rst-content .toggle.admonition button.toggle-button { + color: white; +} + +/* sphinx-togglebutton, remove underflow when toggled to hidden mode */ +.rst-content .admonition.toggle-hidden { + padding-bottom: 0px; +} diff --git a/branch/main/_static/sphinx_rtd_theme_ext_color_contrast.css b/branch/main/_static/sphinx_rtd_theme_ext_color_contrast.css new file mode 100644 index 0000000..e68feb8 --- /dev/null +++ b/branch/main/_static/sphinx_rtd_theme_ext_color_contrast.css @@ -0,0 +1,47 @@ +/* The following are for web accessibility of sphinx_rtd_theme: they + * solve some of the most frequent contrast issues. Remove when this + * solved: + * https://github.com/readthedocs/sphinx_rtd_theme/issues/971 + */ +/* background: #fcfcfc, note boxes #E7F2FA */ +a { color: #2573A7; } /* original #2980B9, #1F5C84; */ +body { color: #242424; } /* original #404040, #383838 */ +.wy-side-nav-search>a, .wy-side-nav-search .wy-dropdown>a { + color: #ffffff; +} /* original #fcfcfc */ +footer { color: #737373; } /* original gray=#808080*/ +footer span.commit code, footer span.commit .rst-content tt, .rst-content footer span.commit tt { + color: #737373; +} /* original gray=#808080*/ +.rst-content tt.literal, .rst-content tt.literal, .rst-content code.literal { + color: #AB2314; +} +/* Sidebar background */ +.wy-side-nav-search { background-color: #277CB4;} + +/* Same, but for pygments */ +.highlight .ch { color: #3E7A89; } /* #! line */ +.highlight .c1 { color: #3E7A89; } /* also comments */ +.highlight .nv { color: #AD3ECC; } /* variable */ +.highlight .gp { color: #B45608; } /* prompt character, $*/ +.highlight .si { color: #3975B1; } /* ${} variable text */ +.highlight .nc { color: #0C78A7; } + +/* Sphinx admonitions */ +/* warning */ +.wy-alert.wy-alert-warning .wy-alert-title, .rst-content .wy-alert-warning.note .wy-alert-title, .rst-content .attention .wy-alert-title, .rst-content .caution .wy-alert-title, .rst-content .wy-alert-warning.danger .wy-alert-title, .rst-content .wy-alert-warning.error .wy-alert-title, .rst-content .wy-alert-warning.hint .wy-alert-title, .rst-content .wy-alert-warning.important .wy-alert-title, .rst-content .wy-alert-warning.tip .wy-alert-title, .rst-content .warning .wy-alert-title, .rst-content .wy-alert-warning.seealso .wy-alert-title, .rst-content .admonition-todo .wy-alert-title, .rst-content .wy-alert-warning.admonition .wy-alert-title, .wy-alert.wy-alert-warning .rst-content .admonition-title, .rst-content .wy-alert.wy-alert-warning .admonition-title, .rst-content .wy-alert-warning.note .admonition-title, .rst-content .attention .admonition-title, .rst-content .caution .admonition-title, .rst-content .wy-alert-warning.danger .admonition-title, .rst-content .wy-alert-warning.error .admonition-title, .rst-content .wy-alert-warning.hint .admonition-title, .rst-content .wy-alert-warning.important .admonition-title, .rst-content .wy-alert-warning.tip .admonition-title, .rst-content .warning .admonition-title, .rst-content .wy-alert-warning.seealso .admonition-title, .rst-content .admonition-todo .admonition-title, .rst-content .wy-alert-warning.admonition .admonition-title { + background: #B15E16; } +/* important */ +.wy-alert.wy-alert-success .wy-alert-title, .rst-content .wy-alert-success.note .wy-alert-title, .rst-content .wy-alert-success.attention .wy-alert-title, .rst-content .wy-alert-success.caution .wy-alert-title, .rst-content .wy-alert-success.danger .wy-alert-title, .rst-content .wy-alert-success.error .wy-alert-title, .rst-content .hint .wy-alert-title, .rst-content .important .wy-alert-title, .rst-content .tip .wy-alert-title, .rst-content .wy-alert-success.warning .wy-alert-title, .rst-content .wy-alert-success.seealso .wy-alert-title, .rst-content .wy-alert-success.admonition-todo .wy-alert-title, .rst-content .wy-alert-success.admonition .wy-alert-title, .wy-alert.wy-alert-success .rst-content .admonition-title, .rst-content .wy-alert.wy-alert-success .admonition-title, .rst-content .wy-alert-success.note .admonition-title, .rst-content .wy-alert-success.attention .admonition-title, .rst-content .wy-alert-success.caution .admonition-title, .rst-content .wy-alert-success.danger .admonition-title, .rst-content .wy-alert-success.error .admonition-title, .rst-content .hint .admonition-title, .rst-content .important .admonition-title, .rst-content .tip .admonition-title, .rst-content .wy-alert-success.warning .admonition-title, .rst-content .wy-alert-success.seealso .admonition-title, .rst-content .wy-alert-success.admonition-todo .admonition-title, .rst-content .wy-alert-success.admonition .admonition-title { + background: #12826C; } +/* seealso, note, etc */ +.wy-alert.wy-alert-info .wy-alert-title, .rst-content .note .wy-alert-title, .rst-content .wy-alert-info.attention .wy-alert-title, .rst-content .wy-alert-info.caution .wy-alert-title, .rst-content .wy-alert-info.danger .wy-alert-title, .rst-content .wy-alert-info.error .wy-alert-title, .rst-content .wy-alert-info.hint .wy-alert-title, .rst-content .wy-alert-info.important .wy-alert-title, .rst-content .wy-alert-info.tip .wy-alert-title, .rst-content .wy-alert-info.warning .wy-alert-title, .rst-content .seealso .wy-alert-title, .rst-content .wy-alert-info.admonition-todo .wy-alert-title, .rst-content .wy-alert-info.admonition .wy-alert-title, .wy-alert.wy-alert-info .rst-content .admonition-title, .rst-content .wy-alert.wy-alert-info .admonition-title, .rst-content .note .admonition-title, .rst-content .wy-alert-info.attention .admonition-title, .rst-content .wy-alert-info.caution .admonition-title, .rst-content .wy-alert-info.danger .admonition-title, .rst-content .wy-alert-info.error .admonition-title, .rst-content .wy-alert-info.hint .admonition-title, .rst-content .wy-alert-info.important .admonition-title, .rst-content .wy-alert-info.tip .admonition-title, .rst-content .wy-alert-info.warning .admonition-title, .rst-content .seealso .admonition-title, .rst-content .wy-alert-info.admonition-todo .admonition-title, .rst-content .wy-alert-info.admonition .admonition-title { + background: #277CB4; } +/* error, danger */ +.rst-content .danger .admonition-title, .rst-content .danger .wy-alert-title, .rst-content .error .admonition-title, .rst-content .error .wy-alert-title, .rst-content .wy-alert-danger.admonition-todo .admonition-title, .rst-content .wy-alert-danger.admonition-todo .wy-alert-title, .rst-content .wy-alert-danger.admonition .admonition-title, .rst-content .wy-alert-danger.admonition .wy-alert-title, .rst-content .wy-alert-danger.attention .admonition-title, .rst-content .wy-alert-danger.attention .wy-alert-title, .rst-content .wy-alert-danger.caution .admonition-title, .rst-content .wy-alert-danger.caution .wy-alert-title, .rst-content .wy-alert-danger.hint .admonition-title, .rst-content .wy-alert-danger.hint .wy-alert-title, .rst-content .wy-alert-danger.important .admonition-title, .rst-content .wy-alert-danger.important .wy-alert-title, .rst-content .wy-alert-danger.note .admonition-title, .rst-content .wy-alert-danger.note .wy-alert-title, .rst-content .wy-alert-danger.seealso .admonition-title, .rst-content .wy-alert-danger.seealso .wy-alert-title, .rst-content .wy-alert-danger.tip .admonition-title, .rst-content .wy-alert-danger.tip .wy-alert-title, .rst-content .wy-alert-danger.warning .admonition-title, .rst-content .wy-alert-danger.warning .wy-alert-title, .rst-content .wy-alert.wy-alert-danger .admonition-title, .wy-alert.wy-alert-danger .rst-content .admonition-title, .wy-alert.wy-alert-danger .wy-alert-title { + background: #e31704; +} + +/* Generic admonition titles */ +.wy-alert-title, .rst-content .admonition-title { + background: #277CB4; } diff --git a/branch/main/_static/tabs.css b/branch/main/_static/tabs.css new file mode 100644 index 0000000..957ba60 --- /dev/null +++ b/branch/main/_static/tabs.css @@ -0,0 +1,89 @@ +.sphinx-tabs { + margin-bottom: 1rem; +} + +[role="tablist"] { + border-bottom: 1px solid #a0b3bf; +} + +.sphinx-tabs-tab { + position: relative; + font-family: Lato,'Helvetica Neue',Arial,Helvetica,sans-serif; + color: #1D5C87; + line-height: 24px; + margin: 0; + font-size: 16px; + font-weight: 400; + background-color: rgba(255, 255, 255, 0); + border-radius: 5px 5px 0 0; + border: 0; + padding: 1rem 1.5rem; + margin-bottom: 0; +} + +.sphinx-tabs-tab[aria-selected="true"] { + font-weight: 700; + border: 1px solid #a0b3bf; + border-bottom: 1px solid white; + margin: -1px; + background-color: white; +} + +.sphinx-tabs-tab:focus { + z-index: 1; + outline-offset: 1px; +} + +.sphinx-tabs-panel { + position: relative; + padding: 1rem; + border: 1px solid #a0b3bf; + margin: 0px -1px -1px -1px; + border-radius: 0 0 5px 5px; + border-top: 0; + background: white; +} + +.sphinx-tabs-panel.code-tab { + padding: 0.4rem; +} + +.sphinx-tab img { + margin-bottom: 24 px; +} + +/* Dark theme preference styling */ + +@media (prefers-color-scheme: dark) { + body[data-theme="auto"] .sphinx-tabs-panel { + color: white; + background-color: rgb(50, 50, 50); + } + + body[data-theme="auto"] .sphinx-tabs-tab { + color: white; + background-color: rgba(255, 255, 255, 0.05); + } + + body[data-theme="auto"] .sphinx-tabs-tab[aria-selected="true"] { + border-bottom: 1px solid rgb(50, 50, 50); + background-color: rgb(50, 50, 50); + } +} + +/* Explicit dark theme styling */ + +body[data-theme="dark"] .sphinx-tabs-panel { + color: white; + background-color: rgb(50, 50, 50); +} + +body[data-theme="dark"] .sphinx-tabs-tab { + color: white; + background-color: rgba(255, 255, 255, 0.05); +} + +body[data-theme="dark"] .sphinx-tabs-tab[aria-selected="true"] { + border-bottom: 2px solid rgb(50, 50, 50); + background-color: rgb(50, 50, 50); +} diff --git a/branch/main/_static/tabs.js b/branch/main/_static/tabs.js new file mode 100644 index 0000000..48dc303 --- /dev/null +++ b/branch/main/_static/tabs.js @@ -0,0 +1,145 @@ +try { + var session = window.sessionStorage || {}; +} catch (e) { + var session = {}; +} + +window.addEventListener("DOMContentLoaded", () => { + const allTabs = document.querySelectorAll('.sphinx-tabs-tab'); + const tabLists = document.querySelectorAll('[role="tablist"]'); + + allTabs.forEach(tab => { + tab.addEventListener("click", changeTabs); + }); + + tabLists.forEach(tabList => { + tabList.addEventListener("keydown", keyTabs); + }); + + // Restore group tab selection from session + const lastSelected = session.getItem('sphinx-tabs-last-selected'); + if (lastSelected != null) selectNamedTabs(lastSelected); +}); + +/** + * Key focus left and right between sibling elements using arrows + * @param {Node} e the element in focus when key was pressed + */ +function keyTabs(e) { + const tab = e.target; + let nextTab = null; + if (e.keyCode === 39 || e.keyCode === 37) { + tab.setAttribute("tabindex", -1); + // Move right + if (e.keyCode === 39) { + nextTab = tab.nextElementSibling; + if (nextTab === null) { + nextTab = tab.parentNode.firstElementChild; + } + // Move left + } else if (e.keyCode === 37) { + nextTab = tab.previousElementSibling; + if (nextTab === null) { + nextTab = tab.parentNode.lastElementChild; + } + } + } + + if (nextTab !== null) { + nextTab.setAttribute("tabindex", 0); + nextTab.focus(); + } +} + +/** + * Select or deselect clicked tab. If a group tab + * is selected, also select tab in other tabLists. + * @param {Node} e the element that was clicked + */ +function changeTabs(e) { + // Use this instead of the element that was clicked, in case it's a child + const notSelected = this.getAttribute("aria-selected") === "false"; + const positionBefore = this.parentNode.getBoundingClientRect().top; + const notClosable = !this.parentNode.classList.contains("closeable"); + + deselectTabList(this); + + if (notSelected || notClosable) { + selectTab(this); + const name = this.getAttribute("name"); + selectNamedTabs(name, this.id); + + if (this.classList.contains("group-tab")) { + // Persist during session + session.setItem('sphinx-tabs-last-selected', name); + } + } + + const positionAfter = this.parentNode.getBoundingClientRect().top; + const positionDelta = positionAfter - positionBefore; + // Scroll to offset content resizing + window.scrollTo(0, window.scrollY + positionDelta); +} + +/** + * Select tab and show associated panel. + * @param {Node} tab tab to select + */ +function selectTab(tab) { + tab.setAttribute("aria-selected", true); + + // Show the associated panel + document + .getElementById(tab.getAttribute("aria-controls")) + .removeAttribute("hidden"); +} + +/** + * Hide the panels associated with all tabs within the + * tablist containing this tab. + * @param {Node} tab a tab within the tablist to deselect + */ +function deselectTabList(tab) { + const parent = tab.parentNode; + const grandparent = parent.parentNode; + + Array.from(parent.children) + .forEach(t => t.setAttribute("aria-selected", false)); + + Array.from(grandparent.children) + .slice(1) // Skip tablist + .forEach(panel => panel.setAttribute("hidden", true)); +} + +/** + * Select grouped tabs with the same name, but no the tab + * with the given id. + * @param {Node} name name of grouped tab to be selected + * @param {Node} clickedId id of clicked tab + */ +function selectNamedTabs(name, clickedId=null) { + const groupedTabs = document.querySelectorAll(`.sphinx-tabs-tab[name="${name}"]`); + const tabLists = Array.from(groupedTabs).map(tab => tab.parentNode); + + tabLists + .forEach(tabList => { + // Don't want to change the tabList containing the clicked tab + const clickedTab = tabList.querySelector(`[id="${clickedId}"]`); + if (clickedTab === null ) { + // Select first tab with matching name + const tab = tabList.querySelector(`.sphinx-tabs-tab[name="${name}"]`); + deselectTabList(tab); + selectTab(tab); + } + }) +} + +if (typeof exports === 'undefined') { + exports = {}; +} + +exports.keyTabs = keyTabs; +exports.changeTabs = changeTabs; +exports.selectTab = selectTab; +exports.deselectTabList = deselectTabList; +exports.selectNamedTabs = selectNamedTabs; diff --git a/branch/main/_static/term_role_formatting.css b/branch/main/_static/term_role_formatting.css new file mode 100644 index 0000000..0b66095 --- /dev/null +++ b/branch/main/_static/term_role_formatting.css @@ -0,0 +1,4 @@ +/* Make terms bold */ +a.reference span.std-term { + font-weight: bold; +} diff --git a/branch/main/_static/togglebutton.css b/branch/main/_static/togglebutton.css new file mode 100644 index 0000000..54a6787 --- /dev/null +++ b/branch/main/_static/togglebutton.css @@ -0,0 +1,160 @@ +/** + * Admonition-based toggles + */ + +/* Visibility of the target */ +.admonition.toggle .admonition-title ~ * { + transition: opacity .3s, height .3s; +} + +/* Toggle buttons inside admonitions so we see the title */ +.admonition.toggle { + position: relative; +} + +/* Titles should cut off earlier to avoid overlapping w/ button */ +.admonition.toggle .admonition-title { + padding-right: 25%; + cursor: pointer; +} + +/* Hovering will cause a slight shift in color to make it feel interactive */ +.admonition.toggle .admonition-title:hover { + box-shadow: inset 0 0 0px 20px rgb(0 0 0 / 1%); +} + +/* Hovering will cause a slight shift in color to make it feel interactive */ +.admonition.toggle .admonition-title:active { + box-shadow: inset 0 0 0px 20px rgb(0 0 0 / 3%); +} + +/* Remove extra whitespace below the admonition title when hidden */ +.admonition.toggle-hidden { + padding-bottom: 0; +} + +.admonition.toggle-hidden .admonition-title { + margin-bottom: 0; +} + +/* hides all the content of a page until de-toggled */ +.admonition.toggle-hidden .admonition-title ~ * { + height: 0; + margin: 0; + opacity: 0; + visibility: hidden; +} + +/* General button style and position*/ +button.toggle-button { + /** + * Background and shape. By default there's no background + * but users can style as they wish + */ + background: none; + border: none; + outline: none; + + /* Positioning just inside the admonition title */ + position: absolute; + right: 0.5em; + padding: 0px; + border: none; + outline: none; +} + +/* Display the toggle hint on wide screens */ +@media (min-width: 768px) { + button.toggle-button.toggle-button-hidden:before { + content: attr(data-toggle-hint); /* This will be filled in by JS */ + font-size: .8em; + align-self: center; + } +} + +/* Icon behavior */ +.tb-icon { + transition: transform .2s ease-out; + height: 1.5em; + width: 1.5em; + stroke: currentColor; /* So that we inherit the color of other text */ +} + +/* The icon should point right when closed, down when open. */ +/* Open */ +.admonition.toggle button .tb-icon { + transform: rotate(90deg); +} + +/* Closed */ +.admonition.toggle button.toggle-button-hidden .tb-icon { + transform: rotate(0deg); +} + +/* With details toggles, we don't rotate the icon so it points right */ +details.toggle-details .tb-icon { + height: 1.4em; + width: 1.4em; + margin-top: 0.1em; /* To center the button vertically */ +} + + +/** + * Details-based toggles. + * In this case, we wrap elements with `.toggle` in a details block. + */ + +/* Details blocks */ +details.toggle-details { + margin: 1em 0; +} + + +details.toggle-details summary { + display: flex; + align-items: center; + cursor: pointer; + list-style: none; + border-radius: .2em; + border-left: 3px solid #1976d2; + background-color: rgb(204 204 204 / 10%); + padding: 0.2em 0.7em 0.3em 0.5em; /* Less padding on left because the SVG has left margin */ + font-size: 0.9em; +} + +details.toggle-details summary:hover { + background-color: rgb(204 204 204 / 20%); +} + +details.toggle-details summary:active { + background: rgb(204 204 204 / 28%); +} + +.toggle-details__summary-text { + margin-left: 0.2em; +} + +details.toggle-details[open] summary { + margin-bottom: .5em; +} + +details.toggle-details[open] summary .tb-icon { + transform: rotate(90deg); +} + +details.toggle-details[open] summary ~ * { + animation: toggle-fade-in .3s ease-out; +} + +@keyframes toggle-fade-in { + from {opacity: 0%;} + to {opacity: 100%;} +} + +/* Print rules - we hide all toggle button elements at print */ +@media print { + /* Always hide the summary so the button doesn't show up */ + details.toggle-details summary { + display: none; + } +} \ No newline at end of file diff --git a/branch/main/_static/togglebutton.js b/branch/main/_static/togglebutton.js new file mode 100644 index 0000000..215a7ee --- /dev/null +++ b/branch/main/_static/togglebutton.js @@ -0,0 +1,187 @@ +/** + * Add Toggle Buttons to elements + */ + +let toggleChevron = ` + + + +`; + +var initToggleItems = () => { + var itemsToToggle = document.querySelectorAll(togglebuttonSelector); + console.log(`[togglebutton]: Adding toggle buttons to ${itemsToToggle.length} items`) + // Add the button to each admonition and hook up a callback to toggle visibility + itemsToToggle.forEach((item, index) => { + if (item.classList.contains("admonition")) { + // If it's an admonition block, then we'll add a button inside + // Generate unique IDs for this item + var toggleID = `toggle-${index}`; + var buttonID = `button-${toggleID}`; + + item.setAttribute('id', toggleID); + if (!item.classList.contains("toggle")){ + item.classList.add("toggle"); + } + // This is the button that will be added to each item to trigger the toggle + var collapseButton = ` + `; + + title = item.querySelector(".admonition-title") + title.insertAdjacentHTML("beforeend", collapseButton); + thisButton = document.getElementById(buttonID); + + // Add click handlers for the button + admonition title (if admonition) + admonitionTitle = document.querySelector(`#${toggleID} > .admonition-title`) + if (admonitionTitle) { + // If an admonition, then make the whole title block clickable + admonitionTitle.addEventListener('click', toggleClickHandler); + admonitionTitle.dataset.target = toggleID + admonitionTitle.dataset.button = buttonID + } else { + // If not an admonition then we'll listen for the button click + thisButton.addEventListener('click', toggleClickHandler); + } + + // Now hide the item for this toggle button unless explicitly noted to show + if (!item.classList.contains("toggle-shown")) { + toggleHidden(thisButton); + } + } else { + // If not an admonition, wrap the block in a
block + // Define the structure of the details block and insert it as a sibling + var detailsBlock = ` +
+ + ${toggleChevron} + ${toggleHintShow} + +
`; + item.insertAdjacentHTML("beforebegin", detailsBlock); + + // Now move the toggle-able content inside of the details block + details = item.previousElementSibling + details.appendChild(item) + item.classList.add("toggle-details__container") + + // Set up a click trigger to change the text as needed + details.addEventListener('click', (click) => { + let parent = click.target.parentElement; + if (parent.tagName.toLowerCase() == "details") { + summary = parent.querySelector("summary"); + details = parent; + } else { + summary = parent; + details = parent.parentElement; + } + // Update the inner text for the proper hint + if (details.open) { + summary.querySelector("span.toggle-details__summary-text").innerText = toggleHintShow; + } else { + summary.querySelector("span.toggle-details__summary-text").innerText = toggleHintHide; + } + + }); + + // If we have a toggle-shown class, open details block should be open + if (item.classList.contains("toggle-shown")) { + details.click(); + } + } + }) +}; + +// This should simply add / remove the collapsed class and change the button text +var toggleHidden = (button) => { + target = button.dataset['target'] + var itemToToggle = document.getElementById(target); + if (itemToToggle.classList.contains("toggle-hidden")) { + itemToToggle.classList.remove("toggle-hidden"); + button.classList.remove("toggle-button-hidden"); + } else { + itemToToggle.classList.add("toggle-hidden"); + button.classList.add("toggle-button-hidden"); + } +} + +var toggleClickHandler = (click) => { + // Be cause the admonition title is clickable and extends to the whole admonition + // We only look for a click event on this title to trigger the toggle. + + if (click.target.classList.contains("admonition-title")) { + button = click.target.querySelector(".toggle-button"); + } else if (click.target.classList.contains("tb-icon")) { + // We've clicked the icon and need to search up one parent for the button + button = click.target.parentElement; + } else if (click.target.tagName == "polyline") { + // We've clicked the SVG elements inside the button, need to up 2 layers + button = click.target.parentElement.parentElement; + } else if (click.target.classList.contains("toggle-button")) { + // We've clicked the button itself and so don't need to do anything + button = click.target; + } else { + console.log(`[togglebutton]: Couldn't find button for ${click.target}`) + } + target = document.getElementById(button.dataset['button']); + toggleHidden(target); +} + +// If we want to blanket-add toggle classes to certain cells +var addToggleToSelector = () => { + const selector = ""; + if (selector.length > 0) { + document.querySelectorAll(selector).forEach((item) => { + item.classList.add("toggle"); + }) + } +} + +// Helper function to run when the DOM is finished +const sphinxToggleRunWhenDOMLoaded = cb => { + if (document.readyState != 'loading') { + cb() + } else if (document.addEventListener) { + document.addEventListener('DOMContentLoaded', cb) + } else { + document.attachEvent('onreadystatechange', function() { + if (document.readyState == 'complete') cb() + }) + } +} +sphinxToggleRunWhenDOMLoaded(addToggleToSelector) +sphinxToggleRunWhenDOMLoaded(initToggleItems) + +/** Toggle details blocks to be open when printing */ +if (toggleOpenOnPrint == "true") { + window.addEventListener("beforeprint", () => { + // Open the details + document.querySelectorAll("details.toggle-details").forEach((el) => { + el.dataset["togglestatus"] = el.open; + el.open = true; + }); + + // Open the admonitions + document.querySelectorAll(".admonition.toggle.toggle-hidden").forEach((el) => { + console.log(el); + el.querySelector("button.toggle-button").click(); + el.dataset["toggle_after_print"] = "true"; + }); + }); + window.addEventListener("afterprint", () => { + // Re-close the details that were closed + document.querySelectorAll("details.toggle-details").forEach((el) => { + el.open = el.dataset["togglestatus"] == "true"; + delete el.dataset["togglestatus"]; + }); + + // Re-close the admonition toggle buttons + document.querySelectorAll(".admonition.toggle").forEach((el) => { + if (el.dataset["toggle_after_print"] == "true") { + el.querySelector("button.toggle-button").click(); + delete el.dataset["toggle_after_print"]; + } + }); + }); +} diff --git a/branch/main/additional-topics/index.html b/branch/main/additional-topics/index.html new file mode 100644 index 0000000..6728f15 --- /dev/null +++ b/branch/main/additional-topics/index.html @@ -0,0 +1,140 @@ + + + + + + + <no title> — Introduction to CMake documentation + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + +
+ +
+
+
+ +
+
+
+
+ + + +
+
+ +
+
+
+
+ + + + \ No newline at end of file diff --git a/branch/main/cmake-syntax/index.html b/branch/main/cmake-syntax/index.html new file mode 100644 index 0000000..96426ab --- /dev/null +++ b/branch/main/cmake-syntax/index.html @@ -0,0 +1,396 @@ + + + + + + + CMake syntax — Introduction to CMake documentation + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + +
+ +
+
+
+ +
+
+
+
+ +
+

CMake syntax

+
+

Questions

+
    +

  • How can we achieve more control over the build system generated by CMake?

    • +

  • Is it possible to let the user decide what to generate?

    • +
+
+
+

Objectives

+
    +

  • Learn how to define variables with set and use them with the ${} +operator for variable references.

    • +

  • Learn the syntax for conditionals in CMake: if - elseif - else - endif

    • +

  • Learn the syntax for loops in CMake: foreach

    • +

  • Learn how CMake structures build artifacts.

    • +

  • Learn how to print helpful messages.

    • +

  • Learn how to handle user-facing options: option and the role of CMake cache.

    • +
+
+

CMake offers a domain-specific language (DSL) to describe how to generate a build system native to the specific platform you might be running on. In this episode, we will get acquainted with its syntax.

+
+

The CMake DSL

+

Remember that the DSL is case-insensitive. We will now have a look at its main elements.

+
+

Variables

+

These are either CMake- or user-defined variables. You can obtain the list of CMake-defined variables with the command:

+
$ cmake --help-variable-list
+
+
+

You can create a new variable with the set command:

+ +

Variables in CMake are always of string type, but certain commands can interpret them as other types. If you want to declare a list variable, you will have to provide it as a ;-separated string. Lists can be manipulated with the list family of commands.

+

You can inspect the value of any variable by dereferencing it with the ${} operator, as in bash shell. For example, the following snippet sets the content of hello variable and then prints it:

+
set(hello "world")
+message("hello ${hello}")
+
+
+

Two notes about variable references:

+
    +

  • if the variable within the ${} operator is not set, you will get an empty string.

    • +

  • you can nest variable references: ${outer_${inner_variable}_variable}. They will be evaluated from the inside out.

    • +
+

One of the most confusing aspects in CMake is the scoping of variables. There are three variable scopes in the DSL:

+
    +

  • Function: In effect when a variable is set within a function, the variable will be visible within the function, but not outside.

    • +

  • Directory: In effect when processing a CMakeLists.txt in a directory, variables in the parent folder will be available, but any that is set in the current folder will not be propagated to the parent.

    • +

  • Cache: These variables are persistent across calls to cmake and available to all scopes in the project. Modifying a cache variable requires using a special form of the set function:

    + +
    • +
+

Here is a list of few CMake-defined variables:

+
    +

  • PROJECT_BINARY_DIR. This is the build folder for the project.

    • +

  • PROJECT_SOURCE_DIR. This is the location of the root CMakeLists.txt in the project.

    • +

  • CMAKE_CURRENT_LIST_DIR. This is the folder for the CMakeLists.txt currently being processed.

    • +
+

Help on a specific built-in variable can be obtained with:

+
$ cmake --help-variable PROJECT_BINARY_DIR
+
+
+
+
+

Commands

+

These are provided by CMake and are essential building blocks of the DSL, as they allow you to manipulate variables. They include control flow constructs and the target_* family of commands.

+

You can find a complete list of available commands with:

+
$ cmake --help-command-list
+
+
+

Functions and macros are built on top of the basic built-in commands and are either CMake- or user-defined. These prove useful to avoid repetition in your CMake scripts.

+

The difference between a function and a macro is their scope:

+
    +

  • Functions have their own scope: variables defined inside a function are not propagated back to the caller.

    • +

  • Macros do not have their own scope: variables from the parent scope can be modified and new variables in the parent scope can be set.

    • +
+

Help on a specific built-in command, function or macro can be obtained with:

+
$ cmake --help-command target_link_libraries
+
+
+
+
+

Modules

+

These are collections of functions and macros and are either CMake- or user-defined. CMake comes with a rich ecosystem of modules and you will probably write a few of your own to encapulate frequently used functions or macros in your CMake scripts.

+

You will have to include the module to use its contents, for example:

+
include(CMakePrintHelpers)
+
+
+

The full list of built-in modules is available with:

+
$ cmake --help-module-list
+
+
+

Help on a specific built-in module can be obtained with:

+
$ cmake --help-module CMakePrintHelpers
+
+
+
+
+
+

Flow control

+

The if and foreach commands are available as flow control constructs in the CMake DSL and you are surely familiar with their use in other programming languages.

+

Since all variables in CMake are strings, the syntax for if and foreach appears in a few different variants.

+ +

The truth value of the conditions in the if and elseif blocks is determined by boolean operators. In the CMake DSL:

+
    +

  • True is any expression evaluating to: 1, ON, TRUE, YES, and +Y.

    • +

  • False is any expression evaluating to: 0, OFF, FALSE, NO, +N, IGNORE, and NOTFOUND.

    • +
+

CMake offers boolean operator for string comparisons, such as STREQUAL for string equality, and for version comparisons, such as VERSION_EQUAL.

+
+

Variable expansions in conditionals

+

The if command expands the contents of variables before evaluating their +truth value. See official documentation for further details.

+
+
+

Exercise 2: Conditionals in CMake

+

Modify the CMakeLists.txt from the previous exercise to build either a static or a shared library depending on the value of the boolean MAKE_SHARED_LIBRARY:

+
    +

  1. Define the MAKE_SHARED_LIBRARY variable.

    2. +

  2. Write a conditional checking the variable. In each branch call add_library appropriately.

    3. +
+
+

You can find a scaffold project in the content/code/02_conditionals-cxx folder. A working solution is in the solution subfolder.

+
+
+

You can perform the same operation on a collection of items with foreach:

+ +

The list of items is either space- or ;-separated. break() and continue() are also available.

+ +
+
+

Printing messages

+

You will most likely have to engage in debugging your CMake scripts at some point. Print-based debugging is the most effective way and the main workhorse for this will be the message command:

+ + +

It should be noted that message can be a bit awkward to work with, especially when you want to print the name and value of a variable. Including the built-in module CMakePrintHelpers will make your life easier when debugging, since it provides the cmake_print_variables function:

+ +
+

Keypoints

+
    +

  • CMake offers a full-fledged DSL which empowers you to write complex CMakeLists.txt.

    • +

  • Variables have scoping rules.

    • +

  • The structure of the project is mirrored in the build folder.

    • +
+
+
+
+ + +
+
+ +
+
+
+
+ + + + \ No newline at end of file diff --git a/branch/main/dependencies/index.html b/branch/main/dependencies/index.html new file mode 100644 index 0000000..2739e32 --- /dev/null +++ b/branch/main/dependencies/index.html @@ -0,0 +1,383 @@ + + + + + + + Finding and using dependencies — Introduction to CMake documentation + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + +
+ +
+
+
+ +
+
+
+
+ +
+

Finding and using dependencies

+
+

Questions

+
    +

  • How can I use CMake to detect and use the dependencies of my project?

    • +
+
+
+

Objectives

+
    +

  • Learn how to use find_package.

    • +

  • Learn what other detection alternatives exist.

    • +
+
+

The vast majority of software projects do not happen in a vacuum: they will have +dependencies on existing frameworks and libraries. Good documentation will +instruct your users to ensure that these are satisfied in their programming +environment. The build system is the appropriate place to check that these +preconditions are met and that your project can be built correctly. +In this episode, we will show you few examples of how to detect and use +dependencies in your CMake build system.

+
+

Finding dependencies

+

CMake offers a family of commands to find artifacts installed on your system:

+
    +

  • find_file to retrieve the full path to a file.

    • +

  • find_library to find a library, shared or static.

    • +

  • find_package to find and load settings from an external project.

    • +

  • find_path to find the directory containing a file.

    • +

  • find_program to find an executable.

    • +
+

The workhorse of dependency discovery is find_package, which will cover your +needs in almost all use cases.

+ +

We cannot stress this enough: you should only use the other commands in the +find_ family in very special, very narrow circumstances. Why so?

+
    +

  1. For a large selection of common dependencies, the Find<PackageName>.cmake +modules shipped with CMake work flawlessly and are maintained by the CMake +developers. This lifts the burden of programming your own dependency +detection tricks.

    2. +

  2. find_package will set up imported targets: targets defined outside +your project that you can use with your own targets. The properties on +imported targets defines usage requirements for the dependencies. A command +such as:

    +
    target_link_libraries(your-target
+  PUBLIC
+    imported-target
+  )
+
    +
    +

    will set compiler flags, definitions, include directories, and link libraries +from imported-target to your-target and to all other targets in +your project that will use your-target.

    +
    3. +
+

These two points simplify enormously the burden of dependency detection and +consistent usage within a multi-folder project.

+
+

Using find_package

+

When attempting dependency detection with find_package, you should make sure that:

+
    +

  • A Find<PackageName>.cmake module exists,

    • +

  • Which components, if any, it provides, and

    • +

  • What imported targets it will set up.

    • +
+

A complete list of Find<PackageName>.cmake can be found from the command-line interface:

+
$ cmake --help-module-list | grep "Find"
+
+
+ +
+

Exercise 23: Using MPI

+

In this exercise, you will attempt compiling a “Hello, world” program that +uses the message passing interface (MPI).

+
    +

  1. Check whether a FindMPI.cmake module exists in the built-in module +library.

    2. +

  2. Get acquainted with its components and the variables and imported targets +it defines.

    3. +
+
+

The scaffold project is in content/code/xx_mpi-cxx.

+
    +

  1. Compile the source file to an executable.

    2. +

  2. Link against the MPI imported target.

    3. +

  3. Invoke a verbose build and observe how CMake compiles and links.

    4. +
+

A working example is in the solution subfolder.

+
+
+
+
+

Alternatives: Config scripts and pkg-config

+

What to do when there is no built-in Find<PackageName>.cmake module for a package you depend on? +The package developers might be already prepared to help you out:

+
    +

  • They ship the CMake-specific file <PackageName>Config.cmake which +describes how the imported target should be made for their package. +In this case, you need to point CMake to the folder containing the Config file using the +special <PackageName>_DIR variable:

    +
    $ cmake -S. -Bbuild -D<PackageName>_DIR=/folder/containing/<PackageName>Config.cmake
+
    +
    +
    • +

  • They include a .pc file, which, on Unix-like platforms, can be detected +with the pkg-config utility. You can then leverage pkg-config through CMake:

    +
    # find pkg-config
+find_package(PkgConfig REQUIRED)
+# ask pkg-config to find the UUID library and prepare an imported target
+pkg_search_module(UUID REQUIRED uuid IMPORTED_TARGET)
+# use the imported target
+if(TARGET PkgConfig::UUID)
+  message(STATUS "Found libuuid")
+endif()
+
    +
    +

    This was the strategy adopted in Probing compilation, linking, and execution when testing the use of the +UUID library.

    +
    • +
+
+

Keypoints

+
    +

  • CMake has a rich ecosystem of modules for finding software dependencies. They are called Find<package>.cmake.

    • +

  • The Find<package>.cmake modules are used through find_package(<package>).

    • +

  • You can also use the classic Unix tool pkg-config to find software +dependencies, but this is not as robust as the CMake-native +Find<package> modules.

    • +
+
+

Footnotes

+ +
+
+
+ + +
+
+ +
+
+
+
+ + + + \ No newline at end of file diff --git a/branch/main/genindex/index.html b/branch/main/genindex/index.html new file mode 100644 index 0000000..bd56f70 --- /dev/null +++ b/branch/main/genindex/index.html @@ -0,0 +1,141 @@ + + + + + + Index — Introduction to CMake documentation + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + +
+ +
+
+
+ +
+
+
+
+ + +

Index

+ +
+ +
+ + +
+
+
+ +
+ +
+

© Copyright 2024, EuroCC National Competence Centre Sweden.

+
+ + Built with Sphinx using a + theme + provided by Read the Docs. + + +
+
+
+
+
+ + + + \ No newline at end of file diff --git a/branch/main/guide/index.html b/branch/main/guide/index.html new file mode 100644 index 0000000..f289909 --- /dev/null +++ b/branch/main/guide/index.html @@ -0,0 +1,172 @@ + + + + + + + Instructor’s guide — Introduction to CMake documentation + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + +
+ +
+
+
+ +
+
+
+
+ +
+

Instructor’s guide

+
+

Why we teach this lesson

+
+
+

Intended learning outcomes

+
+
+

Timing

+
+
+

Preparing exercises

+

e.g. what to do the day before to set up common repositories.

+
+
+

Other practical aspects

+
+
+

Interesting questions you might get

+
+
+

Typical pitfalls

+
+
+ + +
+
+ +
+
+
+
+ + + + \ No newline at end of file diff --git a/branch/main/hello-cmake/index.html b/branch/main/hello-cmake/index.html new file mode 100644 index 0000000..9cb5f76 --- /dev/null +++ b/branch/main/hello-cmake/index.html @@ -0,0 +1,432 @@ + + + + + + + From sources to executables — Introduction to CMake documentation + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + +
+ +
+
+
+ +
+
+
+
+ +
+

From sources to executables

+
+

Questions

+
    +

  • How do we use CMake to compile source files to executables?

    • +
+
+
+

Objectives

+
    +

  • Learn what tools are available in the CMake suite.

    • +

  • Learn how to write a simple CMakeLists.txt.

    • +

  • Learn the difference between build systems, build tools, and build system generator.

    • +

  • Learn to distinguish between configuration, generation, and **build* time.

    • +
+
+
+

What is CMake and why should you care?

+

Software is everywhere and so are build systems. Whenever you run a piece of software, anything from calendar apps to computationally-intensive programs, there was a build system involved in transforming the plain-text source code into binary files that could run on the device you are using.

+

CMake is a build-system generator: it provides a family of tools and a domain-specific language (DSL) to describe what the build system should achieve when the appropriate build tools are invoked. The DSL is platform- and compiler-agnostic: you can reuse the same CMake scripts to obtain native build systems on any platform.

+
+../_images/build-systems.svg +
+

On GNU/Linux, the native build system will be a collection of Makefile-s. The make build tool uses these Makefile-s to transform sources to executables and libraries.

+
+

CMake abstracts the process of generating the Makefile-s away into a generic DSL.

+
+
+
+

A CMake-based build system:

+
    +

  • can bring your software closer to being platform- and compiler-agnostic.

    • +

  • has good support within many integrated development environments (IDEs).

    • +

  • automatically tracks and propagates internal dependencies in your project.

    • +

  • is built on top of well-maintained functionality for automated dependency detection.

    • +
+
+
+

Hello, CMake!

+ +
+
+

Important issues for the CMakeLists.txt file

+
    +

  1. Any CMake build system will invoke the following commands in its root +CMakeLists.txt:

    + + + + +
    2. +

  2. The case of CMake commands does not matter: the DSL is case-insensitive. However, the plain-text files that CMake parses must be called CMakeLists.txt and the case matters! The variable names are also case sensitive!

    3. +

  3. The command to add executables to the build system is add_executable:

    + +
    4. +

  4. Using CMake you can abstract the generation of the build system and also the invocation of the build tools.

    5. +
+
+

Put your CMakeLists.txt under version control

+

All CMake-related files will evolve together with your codebase. It’s a good idea to put them under version control. On the contrary, any of the generated native build-system files, e.g. Makefile-s, should not be version-controlled.

+
+ +
+
+

A complete toolchain

+

The family of tools provided with CMake offers a complete toolchain to manage the development cycle: from sources to build artifacts, testing, and deployment. +We refer to these stages as CMake times and each tool is appropriate at a specific time. In this workshop, we will discuss:

+
    +

  • CMake time or configure time. This is the stage when cmake is invoked to parse the CMakeLists.txt in your project, configure and generate the build system.

    • +

  • Build time. This is handled by the native build tools, but, as we have seen, these can be effectively wrapped by cmake itself.

    • +

  • CTest time or test time. At this stage, you will test your build artifacts.

    • +
+
+../_images/cmake-times.jpg +
+

You can manage all these stages of a software project’s lifetime with tools provided by CMake. This figure shows all these stages (times) and which tool is appropriate for each. This figure is reproduced from CMake Cookbook and is licensed under the terms of the CC-BY-SA.

+
+
+
+
+

Producing libraries

+

CMake can of course be used to produce libraries as well as executables. The relevant command is add_library:

+ +

You can link libraries into executables with target_link_libraries:

+ +
+

Executables and libraries are targets

+

We will encounter the term target repeatedly. In CMake, a target is any object given as first argument to add_executable or add_library. Targets are the basic atom in CMake. Whenever you will need to organize complex projects, think in terms of its targets and their mutual dependencies.

+

The whole family of CMake commands target_* can be used to express chains of dependencies and is much more effective than keeping track of state with variables. We will clarify these concepts in Target-based build systems with CMake.

+
+
+

Exercise 1: Producing libraries

+
+

You can find a scaffold project in the content/code/01_libraries-cxx folder.

+
    +

  1. Write a CMakeLists.txt to compile the source files Message.hpp and Message.cpp into a library. DO NOT specify the type of library, shared or static, explicitly.

    2. +

  2. Add an executable from the hello-world.cpp source file.

    3. +

  3. Link the library into the executable.

    4. +
+

A working solution is in the solution subfolder.

+
+

What kind of library did you get? Static or shared?

+
+
+

Keypoints

+
    +

  • CMake is a build system generator, not a build system.

    • +

  • You write CMakeLists.txt to describe how the build tools will create artifacts from sources.

    • +

  • You can use the CMake suite of tools to manage the whole lifetime: from source files to tests to deployment.

    • +

  • The structure of the project is mirrored in the build folder.

    • +
+
+
+
+ + +
+
+ +
+
+
+
+ + + + \ No newline at end of file diff --git a/branch/main/index.html b/branch/main/index.html new file mode 100644 index 0000000..24a0a3f --- /dev/null +++ b/branch/main/index.html @@ -0,0 +1,261 @@ + + + + + + + Introduction to CMake — Introduction to CMake documentation + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + +
+ +
+
+
+ +
+
+
+
+ +
+

Introduction to CMake

+

CMake is a language-agnostic, cross-platform build tool and is nowadays the de facto standard, with large projects using it to reliably build, test, and deploy their codebases.

+

CMake is not a build system itself, but it generates another system’s build files.

+

In this workshop, you will learn

+
    +

  • Write a CMake build system for C/C++ and Fortran projects producing libraries and/or executables.

    • +

  • Run tests for your code with CTest.

    • +

  • Ensure your build system will work on different platforms.

    • +

  • (optional) Detect and use external dependencies in your project.

    • +

  • (optional) Safely and effectively build mixed-language projects (Python+C/C++, Python+Fortran, Fortran+C/C++)

    • +
+
+

Prerequisites

+

Before attending this workshop, please make sure that you have access to a computer with a compiler for your favorite programming language and a recent version of CMake.

+

If you have access to a supercomputer (e.g. a NAISS system) with a compute allocation you can use that during the workshop. Any questions on how to use a particular HPC resource should be directed to the appropriate support desk.

+

You can also use your own computer for this workshop, provided that it has the necessary tools installed.

+
    +

  • If you do not already have these installed, we recommend that you set up an isolated software environment using conda.

    • +

  • For Windows computers we recommend to use the Windows Subsystem for Linux (WSL). Detailed instructions can be found on the Setting up your system page.

    • +
+
+
+
+
+
+
+
+ + + + + + + + + + + + + + + + + + + + + + + + +

20 min

From sources to executables

30 min

CMake syntax

30 min

Probing compilation, linking, and execution

20 min

Finding and using dependencies

40 min

Target-based build systems with CMake

10 min

Tips and tricks using CMake

10 min

<no title>

+
+

Reference

+ +
+
+

Who is the course for?

+

This course is for students, researchers, engineers, and programmers that have heard of CMake and want to learn how to use it effectively with projects they are working on. +This course assumes no previous experience with CMake. You will have to be familiar with the tools commonly used to build software in your compiled language of choice (C/C++ or Fortran).

+

Specifically, this lesson assumes that participants have some prior experience with or knowledge of the following topics (but no expertise is required):

+
    +

  • Compiling and linking executables and libraries.

    • +

  • Differences between shared and static libraries.

    • +

  • Automated testing.

    • +
+
+
+

About this course

+

This lesson material is originally developed by the EuroCC National Competence Center Sweden (ENCCS) and taught in the CMake Workshop. +Each lesson episode has clearly defined learning objectives and includes multiple exercises along with solutions, and is therefore also useful for self-learning.

+

This material Introduction to CMake was adapted from the material used for CMake Workshop and will be use for the Build Systems Course and Hackathon.

+

The lesson material is licensed under CC-BY-4.0 and can be reused in any form (with appropriate credit) in other courses and workshops. Instructors who wish to teach this lesson can refer to the Instructor’s guide for practical advice.

+
+
+

Outreach

+

There are many free online resources regarding CMake:

+ +

You can also consult the following books:

+
    +

  • Professional CMake: A Practical Guide by Craig Scott.

    • +

  • CMake Cookbook by Radovan Bast and Roberto Di Remigio. The accompanying repository is on GitHub

    • +
+
+
+

Credits

+

The lesson file structure and browsing layout is inspired by and derived from the work by CodeRefinery licensed under the MIT license. We have copied and adapted most of their license text.

+
+

Instructional Material

+

All ENCCS instructional material is made available under the Creative Commons Attribution license (CC-BY-4.0). The following is a human-readable summary of (and not a substitute for) the full legal text of the CC-BY-4.0 license. You are free:

+
    +

  • to share - copy and redistribute the material in any medium or format;

    • +

  • to adapt - remix, transform, and build upon the material for any purpose, even commercially.

    • +
+

The licensor cannot revoke these freedoms as long as you follow these license terms:

+
    +

  • Attribution - You must give appropriate credit (mentioning that your work is derived from work that is Copyright (c) ENCCS and, where practical, linking to https://enccs.se), provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.

    • +

  • No additional restrictions - You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits. With the understanding that:

    +
    +
      +

    • You do not have to comply with the license for elements of the material in the public domain or where your use is permitted by an applicable exception or limitation.

      • +

    • No warranties are given. The license may not give you all of the permissions necessary for your intended use. For example, other rights such as publicity, privacy, or moral rights may limit how you use the material.

      • +
    +
    +
    • +
+
+
+

Software

+

The code samples and exercises in this lesson were adapted from the GitHub repository for the CMake Cookbook.

+

Except where otherwise noted, the example programs and other software provided by ENCCS are made available under the OSI-approved MIT license.

+
+
+
+ + +
+
+
+ +
+ +
+

© Copyright 2024, EuroCC National Competence Centre Sweden.

+
+ + Built with Sphinx using a + theme + provided by Read the Docs. + + +
+
+
+
+
+ + + + \ No newline at end of file diff --git a/branch/main/lesson.pdf b/branch/main/lesson.pdf new file mode 100644 index 0000000..d8bf3cc Binary files /dev/null and b/branch/main/lesson.pdf differ diff --git a/branch/main/objects.inv b/branch/main/objects.inv new file mode 100644 index 0000000..2ecc050 Binary files /dev/null and b/branch/main/objects.inv differ diff --git a/branch/main/probing/index.html b/branch/main/probing/index.html new file mode 100644 index 0000000..6f7b34d --- /dev/null +++ b/branch/main/probing/index.html @@ -0,0 +1,341 @@ + + + + + + + Probing compilation, linking, and execution — Introduction to CMake documentation + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + +
+ +
+
+
+ +
+
+
+
+ +
+

Probing compilation, linking, and execution

+
+

Questions

+
    +

  • How can you add custom steps to your build system with CMake?

    • +
+
+
+

Objectives

+
    +

  • Learn how and when to use execute_process

    • +

  • Learn how to use add_custom_command with targets.

    • +

  • Learn how to test compilation, linking, and execution.

    • +
+
+

CMake lets you run arbitrary commands at any stage in the project lifecycle. +This is yet another mechanism for fine-grained customization and we will discuss +some of the options in this episode.

+
+

Running custom commands at configure-time

+

The most straightforward method is to explicitly run one (or more) child +process(es) when invoking the cmake command. This is achieved with the +execute_process command.

+ +

It is important to note that any command invoked through execute_process +will only be run at configure-time, i.e. when running the cmake +command. You should not rely on execute_process to update any artifacts at +build-time.

+
+

Exercise xx: Find a Python module

+

In this exercise, we’ll use execute_process +to check whether the cffi Python module is +installed in your environment. On the command line, you would do:

+
$ python -c "import cffi; print(cffi.__version__)"
+
+
+

Your goal is to replicate the same in CMake. +The scaffold code is in content/code/xx_find_cffi. +You will have to modify the call to execute_process to run the command above.

+

A working example is in the solution subfolder.

+
+

Note the use of find_package(Python REQUIRED) to obtain the python +executable. CMake comes with many modules dedicated to the detection of +dependencies, such as Python. These are conventionally called +Find<dependency>.cmake and you can inspect their documentation with:

+
$ cmake --help-module FindPython | more
+
+
+

We will revisit uses of find_package later on in Finding and using dependencies.

+
+
+

Custom commands for your targets

+

As mentioned, the main problem of execute_process is that it will run a +command at configure-time, when the cmake command is first invoked. +It is thus not a viable alternative if we intend to perform some specific +actions depending on targets or make the result of the custom commands a +dependency for other targets. +Both cases have real-world examples, such as when using automatically generated +code. The CMake command add_custom_command can be used in some of this +instances.

+ +
+

Exercise 18: Before and after build

+

We want to perform some action before and after building a target, in this case a Fortran executable:

+
    +

  • Before building, we want to read the link line, as produced by CMake, and +echo it to standard output. We use the echo-file.py Python script.

    • +

  • After building, we want to check the size of the static allocations in the +binary, by invoking the size command. We use the static-size.py Python script.

    • +
+

The scaffold code is in content/code/xx_pre_post-f.

+
    +

  1. Add CMake commands to build the example executable from the Fortran +sources. Find the text file with the link line under the build folder. +Hint: have a look in CMakeFiles and keep in mind the name you gave to +the target.

    2. +

  2. Call add_custom_command with PRE_LINK to invoke the echo-file.py Python script.

    3. +

  3. Call add_custom_command with POST_BUILD to invoke the static-size.py Python script.

    4. +
+

A working example is in the solution subfolder.

+
+
+
+

Testing compilation, linking, and execution

+

We also want to be able to run checks on our compilers and linkers. Or check whether a certain library can be used correctly before attempting to build our own artifacts. +CMake provides modules and commands for these purposes:

+
    +

  • Check<LANG>CompilerFlag providing the check_<LANG>_compiler_flag +function, to check whether a compiler flag is valid for the compiler in use.

    • +

  • Check<LANG>SourceCompiles providing the check_<LANG>_source_compiles. +Which check whether a given source file compiles with the compiler in use.

    • +

  • Check<LANG>SourceRuns providing the check_<LANG>_source_runs, to make +sure that a given source snippet compiles, links, and runs.

    • +
+

In all cases, <LANG> can be one of CXX, C or Fortran.

+
+

Exercise 19: Check that a compiler accepts a compiler flag

+

Compilers evolve: they add and/or remove flags and sometimes you will face +the need to test whether some flags are available before using them in your +build.

+

The scaffold code is in content/code/xx_check_compiler_flag.

+
    +

  1. Implement a CMakeLists.txt to build an executable from the +asan-example.cpp source file.

    2. +

  2. Check that the address sanitizer flags are available with +check_cxx_compiler_flag. The flags to check are -fsanitize=address +-fno-omit-frame-pointer. Find the command signature with:

    +
    $ cmake --help-module CMakeCXXCompilerFlag
+
    +
    +
    3. +

  3. If the flags do work, add them to the those used to compile the executable +target with target_compile_options.

    4. +
+

A working example is in the solution subfolder.

+
+
+

Exercise 20: Testing runtime capabilities

+

Testing that some features will work properly for your code requires not only +compiling an object files, but also linking an executable and running it +successfully.

+

The scaffold code is in content/code/xx_check_source_runs.

+
    +

  1. Create an executable target from the source file use-uuid.cpp.

    2. +

  2. Add a check that linking against the library produces working executables. +Use the following C code as test:

    +
    #include <uuid/uuid.h>
+
+int main(int argc, char * argv[]) {
+  uuid_t uuid;
+  uuid_generate(uuid);
+  return 0;
+}
+
    +
    +

    check_c_source_runs requires the test source code to be passed in as +a string. Find the command signature with:

    +
    $ cmake --help-module CheckCSourceRuns
+
    +
    +
    3. +

  3. If the test is successful, link executable target against the UUID +library: use the PkgConfig::UUID target as argument to +target_link_libraries.

    4. +
+

A working example is in the solution subfolder.

+
+
+

Keypoints

+
    +

  • You can customize the build system by executing custom commands.

    • +

  • CMake offers commands to probe compilation, linking, and execution.

    • +
+
+
+
+ + +
+
+ +
+
+
+
+ + + + \ No newline at end of file diff --git a/branch/main/quick-reference/index.html b/branch/main/quick-reference/index.html new file mode 100644 index 0000000..de85fde --- /dev/null +++ b/branch/main/quick-reference/index.html @@ -0,0 +1,143 @@ + + + + + + + Quick Reference — Introduction to CMake documentation + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + +
+ +
+
+
+ +
+
+
+
+ +
+

Quick Reference

+
+ + +
+
+ +
+
+
+
+ + + + \ No newline at end of file diff --git a/branch/main/search/index.html b/branch/main/search/index.html new file mode 100644 index 0000000..a685c57 --- /dev/null +++ b/branch/main/search/index.html @@ -0,0 +1,155 @@ + + + + + + Search — Introduction to CMake documentation + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + +
+ +
+
+
+
    +
    • +
  • Search
    • +
  • +
    • +
+
+
+
+
+ + + + +
+ +
+ +
+
+
+ +
+ +
+

© Copyright 2024, EuroCC National Competence Centre Sweden.

+
+ + Built with Sphinx using a + theme + provided by Read the Docs. + + +
+
+
+
+
+ + + + + + + + + \ No newline at end of file diff --git a/branch/main/searchindex.js b/branch/main/searchindex.js new file mode 100644 index 0000000..a9e28f9 --- /dev/null +++ b/branch/main/searchindex.js @@ -0,0 +1 @@ +Search.setIndex({"alltitles": {"A complete toolchain": [[4, "a-complete-toolchain"]], "About this course": [[5, "about-this-course"]], "Alternatives: Config scripts and pkg-config": [[2, "alternatives-config-scripts-and-pkg-config"]], "CMake syntax": [[1, null]], "Commands": [[1, "commands"]], "Compiling \u201cHello, world\u201d with CMake": [[4, "typealong-0"]], "Creating an environment and installing packages": [[8, "creating-an-environment-and-installing-packages"]], "Credits": [[5, "credits"]], "Custom commands for your targets": [[6, "custom-commands-for-your-targets"]], "Executables and libraries are targets": [[4, "callout-1"]], "Exercise 18: Before and after build": [[6, "exercise-1"]], "Exercise 19: Check that a compiler accepts a compiler flag": [[6, "exercise-2"]], "Exercise 1: Producing libraries": [[4, "exercise-0"]], "Exercise 20: Testing runtime capabilities": [[6, "exercise-3"]], "Exercise 23: Using MPI": [[2, "exercise-0"]], "Exercise 2: Conditionals in CMake": [[1, "exercise-0"]], "Exercise xx: Find a Python module": [[6, "exercise-0"]], "Exercise yy: Cellular automata": [[9, "exercise-1"]], "Finding and using dependencies": [[2, null]], "Finding dependencies": [[2, "finding-dependencies"]], "Flow control": [[1, "flow-control"]], "For MacOS and Linux users": [[8, "for-macos-and-linux-users"]], "For Windows users": [[8, "for-windows-users"]], "From sources to executables": [[4, null]], "Functions and macros": [[10, "functions-and-macros"]], "Hello, CMake!": [[4, "id3"]], "Important issues for the CMakeLists.txt file": [[4, "important-issues-for-the-cmakelists-txt-file"]], "Instructional Material": [[5, "instructional-material"]], "Instructor\u2019s guide": [[3, null]], "Intended learning outcomes": [[3, 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+

Setting up your system

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In order to follow this workshop, you will need access to compilers, Python and CMake. You can use an HPC cluster if you have access to one, but the instructions here cover how to install the prerequisites on your own computer.

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We also show how you can use Binder to run in the cloud.

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These instructions are based on installing compilers and CMake via the Conda package and environment manager, as it provides a convenient way to install binary packages in an isolated software environment.

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For Windows users

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We strongly recommend to use (and install if necessary) the Windows Subsystem for Linux (WSL) as it is a powerful tool which will likely be useful also after the workshop. Inside WSL you will need Python 3 and the conda environment manager. A useful guide to doing this is found at HERE. The installation of the required dependencies in a WSL terminal is documented below.

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For MacOS and Linux users

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MacOS and Linux users can simply open a terminal and install +Miniconda:

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    +

  • For MacOS see HERE.

    • +

  • For Linux see HERE.

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+

Creating an environment and installing packages

+

Once you have conda installed (and WSL if you’re using Windows OS) you can use the environment.yml file to install dependencies.

+

First save it to your hard drive by clicking the link, and then in a terminal navigate to where you saved the file and type:

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conda env create -f environment.yml
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You then need to activate the new environment by:

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conda activate intro-to-cmake
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Now you should have CMake, compilers, Python and a few other packages installed!

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INTERFACE
PUBLIC
PUBLICViewer does not support full SVG 1.1 \ No newline at end of file diff --git a/branch/main/singlehtml/_static/ENCCS.jpg b/branch/main/singlehtml/_static/ENCCS.jpg new file mode 100644 index 0000000..da2355c Binary files /dev/null and b/branch/main/singlehtml/_static/ENCCS.jpg differ diff --git a/branch/main/singlehtml/_static/_sphinx_javascript_frameworks_compat.js b/branch/main/singlehtml/_static/_sphinx_javascript_frameworks_compat.js new file mode 100644 index 0000000..8141580 --- /dev/null +++ b/branch/main/singlehtml/_static/_sphinx_javascript_frameworks_compat.js @@ -0,0 +1,123 @@ +/* Compatability shim for jQuery and underscores.js. + * + * Copyright Sphinx contributors + * Released under the two clause BSD licence + */ + +/** + * small helper function to urldecode strings + * + * See https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/decodeURIComponent#Decoding_query_parameters_from_a_URL + */ +jQuery.urldecode = function(x) { + if (!x) { + return x + } + return decodeURIComponent(x.replace(/\+/g, ' ')); +}; + +/** + * small helper function to urlencode strings + */ +jQuery.urlencode = encodeURIComponent; + +/** + * This function returns the parsed url parameters of the + * current request. Multiple values per key are supported, + * it will always return arrays of strings for the value parts. + */ +jQuery.getQueryParameters = function(s) { + if (typeof s === 'undefined') + s = document.location.search; + var parts = s.substr(s.indexOf('?') + 1).split('&'); + var result = {}; + for (var i = 0; i < parts.length; i++) { + var tmp = parts[i].split('=', 2); + var key = jQuery.urldecode(tmp[0]); + var value = jQuery.urldecode(tmp[1]); + if (key in result) + result[key].push(value); + else + result[key] = [value]; + } + return result; +}; + +/** + * highlight a given string on a jquery object by wrapping it in + * span elements with the given class name. + */ +jQuery.fn.highlightText = function(text, className) { + function highlight(node, addItems) { + if (node.nodeType === 3) { + var val = node.nodeValue; + var pos = val.toLowerCase().indexOf(text); + if (pos >= 0 && + !jQuery(node.parentNode).hasClass(className) && + !jQuery(node.parentNode).hasClass("nohighlight")) { + var span; + var isInSVG = jQuery(node).closest("body, svg, foreignObject").is("svg"); + if (isInSVG) { + span = document.createElementNS("http://www.w3.org/2000/svg", "tspan"); + } else { + span = document.createElement("span"); + span.className = className; + } + span.appendChild(document.createTextNode(val.substr(pos, text.length))); + node.parentNode.insertBefore(span, node.parentNode.insertBefore( + document.createTextNode(val.substr(pos + text.length)), + node.nextSibling)); + node.nodeValue = val.substr(0, pos); + if (isInSVG) { + var rect = document.createElementNS("http://www.w3.org/2000/svg", "rect"); + var bbox = node.parentElement.getBBox(); + rect.x.baseVal.value = bbox.x; + rect.y.baseVal.value = bbox.y; + rect.width.baseVal.value = bbox.width; + rect.height.baseVal.value = bbox.height; + rect.setAttribute('class', className); + addItems.push({ + "parent": node.parentNode, + "target": rect}); + } + } + } + else if (!jQuery(node).is("button, select, textarea")) { + jQuery.each(node.childNodes, function() { + highlight(this, addItems); + }); + } + } + var addItems = []; + var result = this.each(function() { + highlight(this, addItems); + }); + for (var i = 0; i < addItems.length; ++i) { + jQuery(addItems[i].parent).before(addItems[i].target); + } + return result; +}; + +/* + * backward compatibility for jQuery.browser + * This will be supported until firefox bug is fixed. + */ +if (!jQuery.browser) { + jQuery.uaMatch = function(ua) { + ua = ua.toLowerCase(); + + var match = /(chrome)[ \/]([\w.]+)/.exec(ua) || + /(webkit)[ \/]([\w.]+)/.exec(ua) || + /(opera)(?:.*version|)[ \/]([\w.]+)/.exec(ua) || + /(msie) ([\w.]+)/.exec(ua) || + ua.indexOf("compatible") < 0 && /(mozilla)(?:.*? rv:([\w.]+)|)/.exec(ua) || + []; + + return { + browser: match[ 1 ] || "", + version: match[ 2 ] || "0" + }; + }; + jQuery.browser = {}; + jQuery.browser[jQuery.uaMatch(navigator.userAgent).browser] = true; +} diff --git a/branch/main/singlehtml/_static/basic.css b/branch/main/singlehtml/_static/basic.css new file mode 100644 index 0000000..f316efc --- /dev/null +++ b/branch/main/singlehtml/_static/basic.css @@ -0,0 +1,925 @@ +/* + * basic.css + * ~~~~~~~~~ + * + * Sphinx stylesheet -- basic theme. + * + * :copyright: Copyright 2007-2024 by the Sphinx team, see AUTHORS. + * :license: BSD, see LICENSE for details. + * + */ + +/* -- main layout ----------------------------------------------------------- */ + +div.clearer { + clear: both; +} + +div.section::after { + display: block; + content: ''; + clear: left; +} + +/* -- relbar ---------------------------------------------------------------- */ + +div.related { + width: 100%; + font-size: 90%; +} + +div.related h3 { + display: none; +} + +div.related ul { + margin: 0; + padding: 0 0 0 10px; + list-style: none; +} + +div.related li { + display: inline; +} + +div.related li.right { + float: right; + margin-right: 5px; +} + +/* -- sidebar --------------------------------------------------------------- */ + +div.sphinxsidebarwrapper { + padding: 10px 5px 0 10px; +} + +div.sphinxsidebar { + float: left; + width: 230px; + margin-left: -100%; + font-size: 90%; + word-wrap: break-word; + overflow-wrap : break-word; +} + +div.sphinxsidebar ul { + list-style: none; +} + +div.sphinxsidebar ul ul, +div.sphinxsidebar ul.want-points { + margin-left: 20px; + list-style: square; +} + +div.sphinxsidebar ul ul { + margin-top: 0; + margin-bottom: 0; +} + +div.sphinxsidebar form { + margin-top: 10px; +} + +div.sphinxsidebar input { + border: 1px solid #98dbcc; + font-family: sans-serif; + font-size: 1em; +} + +div.sphinxsidebar #searchbox form.search { + overflow: hidden; +} + +div.sphinxsidebar #searchbox input[type="text"] { + float: left; + width: 80%; + padding: 0.25em; + box-sizing: border-box; +} + +div.sphinxsidebar #searchbox input[type="submit"] { + float: left; + width: 20%; + border-left: none; + padding: 0.25em; + box-sizing: border-box; +} + + +img { + border: 0; + max-width: 100%; +} + +/* -- search page ----------------------------------------------------------- */ + +ul.search { + margin: 10px 0 0 20px; + padding: 0; +} + +ul.search li { + padding: 5px 0 5px 20px; + background-image: url(file.png); + background-repeat: no-repeat; + background-position: 0 7px; +} + +ul.search li a { + font-weight: bold; +} + +ul.search li p.context { + color: #888; + margin: 2px 0 0 30px; + text-align: left; +} + +ul.keywordmatches li.goodmatch a { + font-weight: bold; +} + +/* -- index page ------------------------------------------------------------ */ + +table.contentstable { + width: 90%; + margin-left: auto; + margin-right: auto; +} + +table.contentstable p.biglink { + line-height: 150%; +} + +a.biglink { + font-size: 1.3em; +} + +span.linkdescr { + font-style: italic; + padding-top: 5px; + font-size: 90%; +} + +/* -- general index --------------------------------------------------------- */ + +table.indextable { + width: 100%; +} + +table.indextable td { + text-align: left; + vertical-align: top; +} + +table.indextable ul { + margin-top: 0; + margin-bottom: 0; + list-style-type: none; +} + +table.indextable > tbody > tr > td > ul { + padding-left: 0em; +} + +table.indextable tr.pcap { + height: 10px; +} + +table.indextable tr.cap { + margin-top: 10px; + background-color: #f2f2f2; +} + +img.toggler { + margin-right: 3px; + margin-top: 3px; + cursor: pointer; +} + +div.modindex-jumpbox { + border-top: 1px solid #ddd; + border-bottom: 1px solid #ddd; + margin: 1em 0 1em 0; + padding: 0.4em; +} + +div.genindex-jumpbox { + border-top: 1px solid #ddd; + border-bottom: 1px solid #ddd; + margin: 1em 0 1em 0; + padding: 0.4em; +} + +/* -- domain module index --------------------------------------------------- */ + +table.modindextable td { + padding: 2px; + border-collapse: collapse; +} + +/* -- general body styles --------------------------------------------------- */ + +div.body { + min-width: 360px; + max-width: 800px; +} + +div.body p, div.body dd, div.body li, div.body blockquote { + -moz-hyphens: auto; + -ms-hyphens: auto; + -webkit-hyphens: auto; + hyphens: auto; +} + +a.headerlink { + visibility: hidden; +} + +a:visited { + color: #551A8B; +} + +h1:hover > a.headerlink, +h2:hover > a.headerlink, +h3:hover > a.headerlink, +h4:hover > a.headerlink, +h5:hover > a.headerlink, +h6:hover > a.headerlink, +dt:hover > a.headerlink, +caption:hover > a.headerlink, +p.caption:hover > a.headerlink, +div.code-block-caption:hover > a.headerlink { + visibility: visible; +} + +div.body p.caption { + text-align: inherit; +} + +div.body td { + text-align: left; +} + +.first { + margin-top: 0 !important; +} + +p.rubric { + margin-top: 30px; + font-weight: bold; +} + +img.align-left, figure.align-left, .figure.align-left, object.align-left { + clear: left; + float: left; + margin-right: 1em; +} + +img.align-right, figure.align-right, .figure.align-right, object.align-right { + clear: right; + float: right; + margin-left: 1em; +} + +img.align-center, figure.align-center, .figure.align-center, object.align-center { + display: block; + margin-left: auto; + margin-right: auto; +} + +img.align-default, figure.align-default, .figure.align-default { + display: block; + margin-left: auto; + margin-right: auto; +} + +.align-left { + text-align: left; +} + +.align-center { + text-align: center; +} + +.align-default { + text-align: center; +} + +.align-right { + text-align: right; +} + +/* -- sidebars -------------------------------------------------------------- */ + +div.sidebar, +aside.sidebar { + margin: 0 0 0.5em 1em; + border: 1px solid #ddb; + padding: 7px; + background-color: #ffe; + width: 40%; + float: right; + clear: right; + overflow-x: auto; +} + +p.sidebar-title { + font-weight: bold; +} + +nav.contents, +aside.topic, +div.admonition, div.topic, blockquote { + clear: left; +} + +/* -- topics ---------------------------------------------------------------- */ + +nav.contents, +aside.topic, +div.topic { + border: 1px solid #ccc; + padding: 7px; + margin: 10px 0 10px 0; +} + +p.topic-title { + font-size: 1.1em; + font-weight: bold; + margin-top: 10px; +} + +/* -- admonitions ----------------------------------------------------------- */ + +div.admonition { + margin-top: 10px; + margin-bottom: 10px; + padding: 7px; +} + +div.admonition dt { + font-weight: bold; +} + +p.admonition-title { + margin: 0px 10px 5px 0px; + font-weight: bold; +} + +div.body p.centered { + text-align: center; + margin-top: 25px; +} + +/* -- content of sidebars/topics/admonitions -------------------------------- */ + +div.sidebar > :last-child, +aside.sidebar > :last-child, +nav.contents > :last-child, +aside.topic > :last-child, +div.topic > :last-child, +div.admonition > :last-child { + margin-bottom: 0; +} + +div.sidebar::after, +aside.sidebar::after, +nav.contents::after, +aside.topic::after, +div.topic::after, +div.admonition::after, +blockquote::after { + display: block; + content: ''; + clear: both; +} + +/* -- tables ---------------------------------------------------------------- */ + +table.docutils { + margin-top: 10px; + margin-bottom: 10px; + border: 0; + border-collapse: collapse; +} + +table.align-center { + margin-left: auto; + margin-right: auto; +} + +table.align-default { + margin-left: auto; + margin-right: auto; +} + +table caption span.caption-number { + font-style: italic; +} + +table caption span.caption-text { +} + +table.docutils td, table.docutils th { + padding: 1px 8px 1px 5px; + border-top: 0; + border-left: 0; + border-right: 0; + border-bottom: 1px solid #aaa; +} + +th { + text-align: left; + padding-right: 5px; +} + +table.citation { + border-left: solid 1px gray; + margin-left: 1px; +} + +table.citation td { + border-bottom: none; +} + +th > :first-child, +td > :first-child { + margin-top: 0px; +} + +th > :last-child, +td > :last-child { + margin-bottom: 0px; +} + +/* -- figures --------------------------------------------------------------- */ + +div.figure, figure { + margin: 0.5em; + padding: 0.5em; +} + +div.figure p.caption, figcaption { + padding: 0.3em; +} + +div.figure p.caption span.caption-number, +figcaption span.caption-number { + font-style: italic; +} + +div.figure p.caption span.caption-text, +figcaption span.caption-text { +} + +/* -- field list styles ----------------------------------------------------- */ + +table.field-list td, table.field-list th { + border: 0 !important; +} + +.field-list ul { + margin: 0; + padding-left: 1em; +} + +.field-list p { + margin: 0; +} + +.field-name { + -moz-hyphens: manual; + -ms-hyphens: manual; + -webkit-hyphens: manual; + hyphens: manual; +} + +/* -- hlist styles ---------------------------------------------------------- */ + +table.hlist { + margin: 1em 0; +} + +table.hlist td { + vertical-align: top; +} + +/* -- object description styles --------------------------------------------- */ + +.sig { + font-family: 'Consolas', 'Menlo', 'DejaVu Sans Mono', 'Bitstream Vera Sans Mono', monospace; +} + +.sig-name, code.descname { + background-color: transparent; + font-weight: bold; +} + +.sig-name { + font-size: 1.1em; +} + +code.descname { + font-size: 1.2em; +} + +.sig-prename, code.descclassname { + background-color: transparent; +} + +.optional { + font-size: 1.3em; +} + +.sig-paren { + font-size: larger; +} + +.sig-param.n { + font-style: italic; +} + +/* C++ specific styling */ + +.sig-inline.c-texpr, +.sig-inline.cpp-texpr { + font-family: unset; +} + +.sig.c .k, .sig.c .kt, +.sig.cpp .k, .sig.cpp .kt { + color: #0033B3; +} + +.sig.c .m, +.sig.cpp .m { + color: #1750EB; +} + +.sig.c .s, .sig.c .sc, +.sig.cpp .s, .sig.cpp .sc { + color: #067D17; +} + + +/* -- other body styles ----------------------------------------------------- */ + +ol.arabic { + list-style: decimal; +} + +ol.loweralpha { + list-style: lower-alpha; +} + +ol.upperalpha { + list-style: upper-alpha; +} + +ol.lowerroman { + list-style: lower-roman; +} + +ol.upperroman { + list-style: upper-roman; +} + +:not(li) > ol > li:first-child > :first-child, +:not(li) > ul > li:first-child > :first-child { + margin-top: 0px; +} + +:not(li) > ol > li:last-child > :last-child, +:not(li) > ul > li:last-child > :last-child { + margin-bottom: 0px; +} + +ol.simple ol p, +ol.simple ul p, +ul.simple ol p, +ul.simple ul p { + margin-top: 0; +} + +ol.simple > li:not(:first-child) > p, +ul.simple > li:not(:first-child) > p { + margin-top: 0; +} + +ol.simple p, +ul.simple p { + margin-bottom: 0; +} + +aside.footnote > span, +div.citation > span { + float: left; +} +aside.footnote > span:last-of-type, +div.citation > span:last-of-type { + padding-right: 0.5em; +} +aside.footnote > p { + margin-left: 2em; +} +div.citation > p { + margin-left: 4em; +} +aside.footnote > p:last-of-type, +div.citation > p:last-of-type { + margin-bottom: 0em; +} +aside.footnote > p:last-of-type:after, +div.citation > p:last-of-type:after { + content: ""; + clear: both; +} + +dl.field-list { + display: grid; + grid-template-columns: fit-content(30%) auto; +} + +dl.field-list > dt { + font-weight: bold; + word-break: break-word; + padding-left: 0.5em; + padding-right: 5px; +} + +dl.field-list > dd { + padding-left: 0.5em; + margin-top: 0em; + margin-left: 0em; + margin-bottom: 0em; +} + +dl { + margin-bottom: 15px; +} + +dd > :first-child { + margin-top: 0px; +} + +dd ul, dd table { + margin-bottom: 10px; +} + +dd { + margin-top: 3px; + margin-bottom: 10px; + margin-left: 30px; +} + +.sig dd { + margin-top: 0px; + margin-bottom: 0px; +} + +.sig dl { + margin-top: 0px; + margin-bottom: 0px; +} + +dl > dd:last-child, +dl > dd:last-child > :last-child { + margin-bottom: 0; +} + +dt:target, span.highlighted { + background-color: #fbe54e; +} + +rect.highlighted { + fill: #fbe54e; +} + +dl.glossary dt { + font-weight: bold; + font-size: 1.1em; +} + +.versionmodified { + font-style: italic; +} + +.system-message { + background-color: #fda; + padding: 5px; + border: 3px solid red; +} + +.footnote:target { + background-color: #ffa; +} + +.line-block { + display: block; + margin-top: 1em; + margin-bottom: 1em; +} + +.line-block .line-block { + margin-top: 0; + margin-bottom: 0; + margin-left: 1.5em; +} + +.guilabel, .menuselection { + font-family: sans-serif; +} + +.accelerator { + text-decoration: underline; +} + +.classifier { + font-style: oblique; +} + +.classifier:before { + font-style: normal; + margin: 0 0.5em; + content: ":"; + display: inline-block; +} + +abbr, acronym { + border-bottom: dotted 1px; + cursor: help; +} + +.translated { + background-color: rgba(207, 255, 207, 0.2) +} + +.untranslated { + background-color: rgba(255, 207, 207, 0.2) +} + +/* -- code displays --------------------------------------------------------- */ + +pre { + overflow: auto; + overflow-y: hidden; /* fixes display issues on Chrome browsers */ +} + +pre, div[class*="highlight-"] { + clear: both; +} + +span.pre { + -moz-hyphens: none; + -ms-hyphens: none; + -webkit-hyphens: none; + hyphens: none; + white-space: nowrap; +} + +div[class*="highlight-"] { + margin: 1em 0; +} + +td.linenos pre { + border: 0; + background-color: transparent; + color: #aaa; +} + +table.highlighttable { + display: block; +} + +table.highlighttable tbody { + display: block; +} + +table.highlighttable tr { + display: flex; +} + +table.highlighttable td { + margin: 0; + padding: 0; +} + +table.highlighttable td.linenos { + padding-right: 0.5em; +} + +table.highlighttable td.code { + flex: 1; + overflow: hidden; +} + +.highlight .hll { + display: block; +} + +div.highlight pre, +table.highlighttable pre { + margin: 0; +} + +div.code-block-caption + div { + margin-top: 0; +} + +div.code-block-caption { + margin-top: 1em; + padding: 2px 5px; + font-size: small; +} + +div.code-block-caption code { + background-color: transparent; +} + +table.highlighttable td.linenos, +span.linenos, +div.highlight span.gp { /* gp: Generic.Prompt */ + user-select: none; + -webkit-user-select: text; /* Safari fallback only */ + -webkit-user-select: none; /* Chrome/Safari */ + -moz-user-select: none; /* Firefox */ + -ms-user-select: none; /* IE10+ */ +} + +div.code-block-caption span.caption-number { + padding: 0.1em 0.3em; + font-style: italic; +} + +div.code-block-caption span.caption-text { +} + +div.literal-block-wrapper { + margin: 1em 0; +} + +code.xref, a code { + background-color: transparent; + font-weight: bold; +} + +h1 code, h2 code, h3 code, h4 code, h5 code, h6 code { + background-color: transparent; +} + +.viewcode-link { + float: right; +} + +.viewcode-back { + float: right; + font-family: sans-serif; +} + +div.viewcode-block:target { + margin: -1px -10px; + padding: 0 10px; +} + +/* -- math display ---------------------------------------------------------- */ + +img.math { + vertical-align: middle; +} + +div.body div.math p { + text-align: center; +} + +span.eqno { + float: right; +} + +span.eqno a.headerlink { + position: absolute; + z-index: 1; +} + +div.math:hover a.headerlink { + visibility: visible; +} + +/* -- printout stylesheet --------------------------------------------------- */ + +@media print { + div.document, + div.documentwrapper, + div.bodywrapper { + margin: 0 !important; + width: 100%; + } + + div.sphinxsidebar, + div.related, + div.footer, + #top-link { + display: none; + } +} \ No newline at end of file diff --git a/branch/main/singlehtml/_static/check-solid.svg b/branch/main/singlehtml/_static/check-solid.svg new file mode 100644 index 0000000..92fad4b --- /dev/null +++ b/branch/main/singlehtml/_static/check-solid.svg @@ -0,0 +1,4 @@ + + + + diff --git a/branch/main/singlehtml/_static/clipboard.min.js b/branch/main/singlehtml/_static/clipboard.min.js new file mode 100644 index 0000000..54b3c46 --- /dev/null +++ b/branch/main/singlehtml/_static/clipboard.min.js @@ -0,0 +1,7 @@ +/*! + * clipboard.js v2.0.8 + * https://clipboardjs.com/ + * + * Licensed MIT © Zeno Rocha + */ +!function(t,e){"object"==typeof exports&&"object"==typeof module?module.exports=e():"function"==typeof define&&define.amd?define([],e):"object"==typeof exports?exports.ClipboardJS=e():t.ClipboardJS=e()}(this,function(){return n={686:function(t,e,n){"use strict";n.d(e,{default:function(){return o}});var e=n(279),i=n.n(e),e=n(370),u=n.n(e),e=n(817),c=n.n(e);function a(t){try{return document.execCommand(t)}catch(t){return}}var f=function(t){t=c()(t);return a("cut"),t};var l=function(t){var e,n,o,r=1 + + + + diff --git a/branch/main/singlehtml/_static/copybutton.css b/branch/main/singlehtml/_static/copybutton.css new file mode 100644 index 0000000..f1916ec --- /dev/null +++ b/branch/main/singlehtml/_static/copybutton.css @@ -0,0 +1,94 @@ +/* Copy buttons */ +button.copybtn { + position: absolute; + display: flex; + top: .3em; + right: .3em; + width: 1.7em; + height: 1.7em; + opacity: 0; + transition: opacity 0.3s, border .3s, background-color .3s; + user-select: none; + padding: 0; + border: none; + outline: none; + border-radius: 0.4em; + /* The colors that GitHub uses */ + border: #1b1f2426 1px solid; + background-color: #f6f8fa; + color: #57606a; +} + +button.copybtn.success { + border-color: #22863a; + color: #22863a; +} + +button.copybtn svg { + stroke: currentColor; + width: 1.5em; + height: 1.5em; + padding: 0.1em; +} + +div.highlight { + position: relative; +} + +/* Show the copybutton */ +.highlight:hover button.copybtn, button.copybtn.success { + opacity: 1; +} + +.highlight button.copybtn:hover { + background-color: rgb(235, 235, 235); +} + +.highlight button.copybtn:active { + background-color: rgb(187, 187, 187); +} + +/** + * A minimal CSS-only tooltip copied from: + * https://codepen.io/mildrenben/pen/rVBrpK + * + * To use, write HTML like the following: + * + *

Short

+ */ + .o-tooltip--left { + position: relative; + } + + .o-tooltip--left:after { + opacity: 0; + visibility: hidden; + position: absolute; + content: attr(data-tooltip); + padding: .2em; + font-size: .8em; + left: -.2em; + background: grey; + color: white; + white-space: nowrap; + z-index: 2; + border-radius: 2px; + transform: translateX(-102%) translateY(0); + transition: opacity 0.2s cubic-bezier(0.64, 0.09, 0.08, 1), transform 0.2s cubic-bezier(0.64, 0.09, 0.08, 1); +} + +.o-tooltip--left:hover:after { + display: block; + opacity: 1; + visibility: visible; + transform: translateX(-100%) translateY(0); + transition: opacity 0.2s cubic-bezier(0.64, 0.09, 0.08, 1), transform 0.2s cubic-bezier(0.64, 0.09, 0.08, 1); + transition-delay: .5s; +} + +/* By default the copy button shouldn't show up when printing a page */ +@media print { + button.copybtn { + display: none; + } +} diff --git a/branch/main/singlehtml/_static/copybutton.js b/branch/main/singlehtml/_static/copybutton.js new file mode 100644 index 0000000..2ea7ff3 --- /dev/null +++ b/branch/main/singlehtml/_static/copybutton.js @@ -0,0 +1,248 @@ +// Localization support +const messages = { + 'en': { + 'copy': 'Copy', + 'copy_to_clipboard': 'Copy to clipboard', + 'copy_success': 'Copied!', + 'copy_failure': 'Failed to copy', + }, + 'es' : { + 'copy': 'Copiar', + 'copy_to_clipboard': 'Copiar al portapapeles', + 'copy_success': '¡Copiado!', + 'copy_failure': 'Error al copiar', + }, + 'de' : { + 'copy': 'Kopieren', + 'copy_to_clipboard': 'In die Zwischenablage kopieren', + 'copy_success': 'Kopiert!', + 'copy_failure': 'Fehler beim Kopieren', + }, + 'fr' : { + 'copy': 'Copier', + 'copy_to_clipboard': 'Copier dans le presse-papier', + 'copy_success': 'Copié !', + 'copy_failure': 'Échec de la copie', + }, + 'ru': { + 'copy': 'Скопировать', + 'copy_to_clipboard': 'Скопировать в буфер', + 'copy_success': 'Скопировано!', + 'copy_failure': 'Не удалось скопировать', + }, + 'zh-CN': { + 'copy': '复制', + 'copy_to_clipboard': '复制到剪贴板', + 'copy_success': '复制成功!', + 'copy_failure': '复制失败', + }, + 'it' : { + 'copy': 'Copiare', + 'copy_to_clipboard': 'Copiato negli appunti', + 'copy_success': 'Copiato!', + 'copy_failure': 'Errore durante la copia', + } +} + +let locale = 'en' +if( document.documentElement.lang !== undefined + && messages[document.documentElement.lang] !== undefined ) { + locale = document.documentElement.lang +} + +let doc_url_root = DOCUMENTATION_OPTIONS.URL_ROOT; +if (doc_url_root == '#') { + doc_url_root = ''; +} + +/** + * SVG files for our copy buttons + */ +let iconCheck = ` + ${messages[locale]['copy_success']} + + +` + +// If the user specified their own SVG use that, otherwise use the default +let iconCopy = ``; +if (!iconCopy) { + iconCopy = ` + ${messages[locale]['copy_to_clipboard']} + + + +` +} + +/** + * Set up copy/paste for code blocks + */ + +const runWhenDOMLoaded = cb => { + if (document.readyState != 'loading') { + cb() + } else if (document.addEventListener) { + document.addEventListener('DOMContentLoaded', cb) + } else { + document.attachEvent('onreadystatechange', function() { + if (document.readyState == 'complete') cb() + }) + } +} + +const codeCellId = index => `codecell${index}` + +// Clears selected text since ClipboardJS will select the text when copying +const clearSelection = () => { + if (window.getSelection) { + window.getSelection().removeAllRanges() + } else if (document.selection) { + document.selection.empty() + } +} + +// Changes tooltip text for a moment, then changes it back +// We want the timeout of our `success` class to be a bit shorter than the +// tooltip and icon change, so that we can hide the icon before changing back. +var timeoutIcon = 2000; +var timeoutSuccessClass = 1500; + +const temporarilyChangeTooltip = (el, oldText, newText) => { + el.setAttribute('data-tooltip', newText) + el.classList.add('success') + // Remove success a little bit sooner than we change the tooltip + // So that we can use CSS to hide the copybutton first + setTimeout(() => el.classList.remove('success'), timeoutSuccessClass) + setTimeout(() => el.setAttribute('data-tooltip', oldText), timeoutIcon) +} + +// Changes the copy button icon for two seconds, then changes it back +const temporarilyChangeIcon = (el) => { + el.innerHTML = iconCheck; + setTimeout(() => {el.innerHTML = iconCopy}, timeoutIcon) +} + +const addCopyButtonToCodeCells = () => { + // If ClipboardJS hasn't loaded, wait a bit and try again. This + // happens because we load ClipboardJS asynchronously. + if (window.ClipboardJS === undefined) { + setTimeout(addCopyButtonToCodeCells, 250) + return + } + + // Add copybuttons to all of our code cells + const COPYBUTTON_SELECTOR = 'div.highlight pre'; + const codeCells = document.querySelectorAll(COPYBUTTON_SELECTOR) + codeCells.forEach((codeCell, index) => { + const id = codeCellId(index) + codeCell.setAttribute('id', id) + + const clipboardButton = id => + `` + codeCell.insertAdjacentHTML('afterend', clipboardButton(id)) + }) + +function escapeRegExp(string) { + return string.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'); // $& means the whole matched string +} + +/** + * Removes excluded text from a Node. + * + * @param {Node} target Node to filter. + * @param {string} exclude CSS selector of nodes to exclude. + * @returns {DOMString} Text from `target` with text removed. + */ +function filterText(target, exclude) { + const clone = target.cloneNode(true); // clone as to not modify the live DOM + if (exclude) { + // remove excluded nodes + clone.querySelectorAll(exclude).forEach(node => node.remove()); + } + return clone.innerText; +} + +// Callback when a copy button is clicked. Will be passed the node that was clicked +// should then grab the text and replace pieces of text that shouldn't be used in output +function formatCopyText(textContent, copybuttonPromptText, isRegexp = false, onlyCopyPromptLines = true, removePrompts = true, copyEmptyLines = true, lineContinuationChar = "", hereDocDelim = "") { + var regexp; + var match; + + // Do we check for line continuation characters and "HERE-documents"? + var useLineCont = !!lineContinuationChar + var useHereDoc = !!hereDocDelim + + // create regexp to capture prompt and remaining line + if (isRegexp) { + regexp = new RegExp('^(' + copybuttonPromptText + ')(.*)') + } else { + regexp = new RegExp('^(' + escapeRegExp(copybuttonPromptText) + ')(.*)') + } + + const outputLines = []; + var promptFound = false; + var gotLineCont = false; + var gotHereDoc = false; + const lineGotPrompt = []; + for (const line of textContent.split('\n')) { + match = line.match(regexp) + if (match || gotLineCont || gotHereDoc) { + promptFound = regexp.test(line) + lineGotPrompt.push(promptFound) + if (removePrompts && promptFound) { + outputLines.push(match[2]) + } else { + outputLines.push(line) + } + gotLineCont = line.endsWith(lineContinuationChar) & useLineCont + if (line.includes(hereDocDelim) & useHereDoc) + gotHereDoc = !gotHereDoc + } else if (!onlyCopyPromptLines) { + outputLines.push(line) + } else if (copyEmptyLines && line.trim() === '') { + outputLines.push(line) + } + } + + // If no lines with the prompt were found then just use original lines + if (lineGotPrompt.some(v => v === true)) { + textContent = outputLines.join('\n'); + } + + // Remove a trailing newline to avoid auto-running when pasting + if (textContent.endsWith("\n")) { + textContent = textContent.slice(0, -1) + } + return textContent +} + + +var copyTargetText = (trigger) => { + var target = document.querySelector(trigger.attributes['data-clipboard-target'].value); + + // get filtered text + let exclude = '.linenos'; + + let text = filterText(target, exclude); + return formatCopyText(text, '', false, true, true, true, '', '') +} + + // Initialize with a callback so we can modify the text before copy + const clipboard = new ClipboardJS('.copybtn', {text: copyTargetText}) + + // Update UI with error/success messages + clipboard.on('success', event => { + clearSelection() + temporarilyChangeTooltip(event.trigger, messages[locale]['copy'], messages[locale]['copy_success']) + temporarilyChangeIcon(event.trigger) + }) + + clipboard.on('error', event => { + temporarilyChangeTooltip(event.trigger, messages[locale]['copy'], messages[locale]['copy_failure']) + }) +} + +runWhenDOMLoaded(addCopyButtonToCodeCells) \ No newline at end of file diff --git a/branch/main/singlehtml/_static/copybutton_funcs.js b/branch/main/singlehtml/_static/copybutton_funcs.js new file mode 100644 index 0000000..dbe1aaa --- /dev/null +++ b/branch/main/singlehtml/_static/copybutton_funcs.js @@ -0,0 +1,73 @@ +function escapeRegExp(string) { + return string.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'); // $& means the whole matched string +} + +/** + * Removes excluded text from a Node. + * + * @param {Node} target Node to filter. + * @param {string} exclude CSS selector of nodes to exclude. + * @returns {DOMString} Text from `target` with text removed. + */ +export function filterText(target, exclude) { + const clone = target.cloneNode(true); // clone as to not modify the live DOM + if (exclude) { + // remove excluded nodes + clone.querySelectorAll(exclude).forEach(node => node.remove()); + } + return clone.innerText; +} + +// Callback when a copy button is clicked. Will be passed the node that was clicked +// should then grab the text and replace pieces of text that shouldn't be used in output +export function formatCopyText(textContent, copybuttonPromptText, isRegexp = false, onlyCopyPromptLines = true, removePrompts = true, copyEmptyLines = true, lineContinuationChar = "", hereDocDelim = "") { + var regexp; + var match; + + // Do we check for line continuation characters and "HERE-documents"? + var useLineCont = !!lineContinuationChar + var useHereDoc = !!hereDocDelim + + // create regexp to capture prompt and remaining line + if (isRegexp) { + regexp = new RegExp('^(' + copybuttonPromptText + ')(.*)') + } else { + regexp = new RegExp('^(' + escapeRegExp(copybuttonPromptText) + ')(.*)') + } + + const outputLines = []; + var promptFound = false; + var gotLineCont = false; + var gotHereDoc = false; + const lineGotPrompt = []; + for (const line of textContent.split('\n')) { + match = line.match(regexp) + if (match || gotLineCont || gotHereDoc) { + 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+ return this; // for chaining... + } +})(jQuery); + +// NO good way to do this!. Copy a hack from here +// https://stackoverflow.com/questions/901115/how-can-i-get-query-string-values-in-javascript +// https://stackoverflow.com/a/2880929 +var urlParams; +(window.onpopstate = function () { + var match, + pl = /\+/g, // Regex for replacing addition symbol with a space + search = /([^&=]+)=?([^&]*)/g, + decode = function (s) { return decodeURIComponent(s.replace(pl, " ")); }, + query = window.location.search.substring(1); + urlParams = {}; + while (match = search.exec(query)) + urlParams[decode(match[1])] = decode(match[2]); +})(); + +// Select heading levels +var maxHeading = urlParams['h'] +if (maxHeading === undefined) maxHeading = 2 +var headingLevels = []; +for (h=2 ; h (sections.length-1) ) { + // if we would scroll past bottom, or above top, do nothing + return; + } + + console.log('xxxxxx'); + var targetSection = sections[targetPos]; + console.log(targetSection, typeof(targetSection)); + + // Return targetSection top and height + var secProperties = section_top_and_height(targetSection); + var top = secProperties['top']; + var height = secProperties['height'] + var win_height = window.innerHeight; + //console.info(top, height, win_height) + + var scroll_to = 0; + if (height >= win_height || height == 0) { + scroll_to = top; + } else { + scroll_to = top - (win_height-height)/3.; + } + //console.info(top, height, win_height, scroll_to) + + $('html, body').animate({ + scrollTop: scroll_to //+ 'px' + }, 'fast'); + +} + + +function minipres() { + /* Enable the minipres mode: + - call the hide() function + - set up the scrolling listener + */ + document.addEventListener('keydown', function (event) { + switch(event.which) { + case 37: // left + switch_slide(-1); + event.preventDefault(); + return false; + break; + //case 38: // up + case 39: // right + switch_slide(+1); + event.preventDefault(); + return false; + break; + //case 40: // down + default: + return; // exit this handler for other keys + } + }, true) + + hide() + + // Increase space between sections + //$("div .section").css('margin-bottom', '50%'); 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+} + +/* Math align to the left */ +.cell_output .MathJax_Display { + text-align: left !important; +} + +/* Pandas tables. Pulled from the Jupyter / nbsphinx CSS */ +div.cell_output table { + border: none; + border-collapse: collapse; + border-spacing: 0; + color: black; + font-size: 1em; + table-layout: fixed; +} + +div.cell_output thead { + border-bottom: 1px solid black; + vertical-align: bottom; +} + +div.cell_output tr, +div.cell_output th, +div.cell_output td { + text-align: right; + vertical-align: middle; + padding: 0.5em 0.5em; + line-height: normal; + white-space: normal; + max-width: none; + border: none; +} + +div.cell_output th { + font-weight: bold; +} + +div.cell_output tbody tr:nth-child(odd) { + background: #f5f5f5; +} + +div.cell_output tbody tr:hover { + background: rgba(66, 165, 245, 0.2); +} + +/** source code line numbers **/ +span.linenos { + opacity: 0.5; +} + +/* Inline text from `paste` operation */ + +span.pasted-text { + font-weight: bold; +} + +span.pasted-inline img { + max-height: 2em; +} + +tbody span.pasted-inline img { + max-height: none; +} + +/* Font colors for 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background-color: #E75C58 +} + +div.highlight .-Color[class*=-BGGreen] { + background-color: #00A250 +} + +div.highlight .-Color[class*=-BGYellow] { + background-color: #DDB62B +} + +div.highlight .-Color[class*=-BGBlue] { + background-color: #208FFB +} + +div.highlight .-Color[class*=-BGMagenta] { + background-color: #D160C4 +} + +div.highlight .-Color[class*=-BGCyan] { + background-color: #60C6C8 +} + +div.highlight .-Color[class*=-BGWhite] { + background-color: #C5C1B4 +} + +/* Font colors for 8-bit ANSI */ + +div.highlight .-Color[class*=-C0] { + color: #000000 +} + +div.highlight .-Color[class*=-BGC0] { + background-color: #000000 +} + +div.highlight .-Color[class*=-C1] { + color: #800000 +} + +div.highlight .-Color[class*=-BGC1] { + background-color: #800000 +} + +div.highlight .-Color[class*=-C2] { + color: #008000 +} + +div.highlight .-Color[class*=-BGC2] { + background-color: #008000 +} + +div.highlight .-Color[class*=-C3] { + color: #808000 +} + +div.highlight .-Color[class*=-BGC3] { + background-color: #808000 +} + +div.highlight .-Color[class*=-C4] { + color: #000080 +} + +div.highlight .-Color[class*=-BGC4] { + background-color: #000080 +} + +div.highlight .-Color[class*=-C5] { + color: #800080 +} + +div.highlight .-Color[class*=-BGC5] { + background-color: #800080 +} + +div.highlight .-Color[class*=-C6] { + color: #008080 +} + +div.highlight .-Color[class*=-BGC6] { + background-color: #008080 +} + +div.highlight .-Color[class*=-C7] { + color: #C0C0C0 +} + +div.highlight .-Color[class*=-BGC7] { + background-color: #C0C0C0 +} + +div.highlight .-Color[class*=-C8] { + color: #808080 +} + +div.highlight .-Color[class*=-BGC8] { + background-color: #808080 +} + +div.highlight .-Color[class*=-C9] { + color: #FF0000 +} + +div.highlight .-Color[class*=-BGC9] { + background-color: #FF0000 +} + +div.highlight .-Color[class*=-C10] { + color: #00FF00 +} + +div.highlight .-Color[class*=-BGC10] { + background-color: #00FF00 +} + +div.highlight .-Color[class*=-C11] { + color: #FFFF00 +} + +div.highlight .-Color[class*=-BGC11] { + background-color: #FFFF00 +} + +div.highlight .-Color[class*=-C12] { + color: #0000FF +} + +div.highlight .-Color[class*=-BGC12] { + background-color: #0000FF +} + +div.highlight .-Color[class*=-C13] { + color: #FF00FF +} + +div.highlight .-Color[class*=-BGC13] { + background-color: #FF00FF +} + +div.highlight .-Color[class*=-C14] { + color: #00FFFF +} + +div.highlight .-Color[class*=-BGC14] { + background-color: #00FFFF +} + +div.highlight .-Color[class*=-C15] { + color: #FFFFFF +} + +div.highlight .-Color[class*=-BGC15] { + background-color: #FFFFFF +} + +div.highlight .-Color[class*=-C16] { + color: #000000 +} + +div.highlight .-Color[class*=-BGC16] { + background-color: #000000 +} + +div.highlight .-Color[class*=-C17] { + color: #00005F +} + +div.highlight .-Color[class*=-BGC17] { + background-color: #00005F +} + +div.highlight .-Color[class*=-C18] { + color: #000087 +} + +div.highlight .-Color[class*=-BGC18] { + background-color: #000087 +} + +div.highlight .-Color[class*=-C19] { + color: #0000AF +} + +div.highlight .-Color[class*=-BGC19] { + background-color: #0000AF +} + +div.highlight .-Color[class*=-C20] { + color: #0000D7 +} + +div.highlight .-Color[class*=-BGC20] { + background-color: #0000D7 +} + +div.highlight .-Color[class*=-C21] { + color: #0000FF +} + +div.highlight .-Color[class*=-BGC21] { + background-color: #0000FF +} + +div.highlight .-Color[class*=-C22] { + color: #005F00 +} + +div.highlight .-Color[class*=-BGC22] { + background-color: #005F00 +} + +div.highlight .-Color[class*=-C23] { + color: #005F5F +} + +div.highlight .-Color[class*=-BGC23] { + background-color: #005F5F +} + +div.highlight .-Color[class*=-C24] { + color: #005F87 +} + +div.highlight .-Color[class*=-BGC24] { + background-color: #005F87 +} + +div.highlight .-Color[class*=-C25] { + color: #005FAF +} + +div.highlight .-Color[class*=-BGC25] { + background-color: #005FAF +} + +div.highlight .-Color[class*=-C26] { + color: #005FD7 +} + +div.highlight .-Color[class*=-BGC26] { + background-color: #005FD7 +} + +div.highlight .-Color[class*=-C27] { + color: #005FFF +} + +div.highlight .-Color[class*=-BGC27] { + background-color: #005FFF +} + +div.highlight .-Color[class*=-C28] { + color: #008700 +} + +div.highlight .-Color[class*=-BGC28] { + background-color: #008700 +} + +div.highlight .-Color[class*=-C29] { + color: #00875F +} + +div.highlight .-Color[class*=-BGC29] { + background-color: #00875F +} + +div.highlight .-Color[class*=-C30] { + color: #008787 +} + +div.highlight .-Color[class*=-BGC30] { + background-color: #008787 +} + +div.highlight .-Color[class*=-C31] { + color: #0087AF +} + +div.highlight .-Color[class*=-BGC31] { + background-color: #0087AF +} + +div.highlight .-Color[class*=-C32] { + color: #0087D7 +} + +div.highlight .-Color[class*=-BGC32] { + background-color: #0087D7 +} + +div.highlight .-Color[class*=-C33] { + color: #0087FF +} + +div.highlight .-Color[class*=-BGC33] { + background-color: #0087FF +} + +div.highlight .-Color[class*=-C34] { + color: #00AF00 +} + +div.highlight .-Color[class*=-BGC34] { + background-color: #00AF00 +} + +div.highlight .-Color[class*=-C35] { + color: #00AF5F +} + +div.highlight .-Color[class*=-BGC35] { + background-color: #00AF5F +} + +div.highlight .-Color[class*=-C36] { + color: #00AF87 +} + +div.highlight .-Color[class*=-BGC36] { + background-color: #00AF87 +} + +div.highlight .-Color[class*=-C37] { + color: #00AFAF +} + +div.highlight .-Color[class*=-BGC37] { + background-color: #00AFAF +} + +div.highlight .-Color[class*=-C38] { + color: #00AFD7 +} + +div.highlight .-Color[class*=-BGC38] { + background-color: #00AFD7 +} + +div.highlight .-Color[class*=-C39] { + color: #00AFFF +} + +div.highlight .-Color[class*=-BGC39] { + background-color: #00AFFF +} + +div.highlight .-Color[class*=-C40] { + color: #00D700 +} + +div.highlight .-Color[class*=-BGC40] { + background-color: #00D700 +} + +div.highlight .-Color[class*=-C41] { + color: #00D75F +} + +div.highlight .-Color[class*=-BGC41] { + background-color: #00D75F +} + +div.highlight .-Color[class*=-C42] { + color: #00D787 +} + +div.highlight .-Color[class*=-BGC42] { + background-color: #00D787 +} + +div.highlight .-Color[class*=-C43] { + color: #00D7AF +} + +div.highlight .-Color[class*=-BGC43] { + background-color: #00D7AF +} + +div.highlight .-Color[class*=-C44] { + color: #00D7D7 +} + +div.highlight .-Color[class*=-BGC44] { + background-color: #00D7D7 +} + +div.highlight .-Color[class*=-C45] { + color: #00D7FF +} + +div.highlight .-Color[class*=-BGC45] { + background-color: #00D7FF +} + +div.highlight .-Color[class*=-C46] { + color: #00FF00 +} + +div.highlight .-Color[class*=-BGC46] { + background-color: #00FF00 +} + +div.highlight .-Color[class*=-C47] { + color: #00FF5F +} + +div.highlight .-Color[class*=-BGC47] { + background-color: #00FF5F +} + +div.highlight .-Color[class*=-C48] { + color: #00FF87 +} + +div.highlight .-Color[class*=-BGC48] { + background-color: #00FF87 +} + +div.highlight .-Color[class*=-C49] { + color: #00FFAF +} + +div.highlight .-Color[class*=-BGC49] { + background-color: #00FFAF +} + +div.highlight .-Color[class*=-C50] { + color: #00FFD7 +} + +div.highlight .-Color[class*=-BGC50] { + background-color: #00FFD7 +} + +div.highlight .-Color[class*=-C51] { + color: #00FFFF +} + +div.highlight .-Color[class*=-BGC51] { + background-color: #00FFFF +} + +div.highlight .-Color[class*=-C52] { + color: #5F0000 +} + +div.highlight .-Color[class*=-BGC52] { + background-color: #5F0000 +} + +div.highlight .-Color[class*=-C53] { + color: #5F005F +} + +div.highlight .-Color[class*=-BGC53] { + background-color: #5F005F +} + +div.highlight .-Color[class*=-C54] { + color: #5F0087 +} + +div.highlight .-Color[class*=-BGC54] { + background-color: #5F0087 +} + +div.highlight .-Color[class*=-C55] { + color: #5F00AF +} + +div.highlight .-Color[class*=-BGC55] { + background-color: #5F00AF +} + +div.highlight .-Color[class*=-C56] { + color: #5F00D7 +} + +div.highlight .-Color[class*=-BGC56] { + background-color: #5F00D7 +} + +div.highlight .-Color[class*=-C57] { + color: #5F00FF +} + +div.highlight .-Color[class*=-BGC57] { + background-color: #5F00FF +} + +div.highlight .-Color[class*=-C58] { + color: #5F5F00 +} + +div.highlight .-Color[class*=-BGC58] { + background-color: #5F5F00 +} + +div.highlight .-Color[class*=-C59] { + color: #5F5F5F +} + +div.highlight .-Color[class*=-BGC59] { + background-color: #5F5F5F +} + +div.highlight .-Color[class*=-C60] { + color: #5F5F87 +} + +div.highlight .-Color[class*=-BGC60] { + background-color: #5F5F87 +} + +div.highlight .-Color[class*=-C61] { + color: #5F5FAF +} + +div.highlight .-Color[class*=-BGC61] { + background-color: #5F5FAF +} + +div.highlight .-Color[class*=-C62] { + color: #5F5FD7 +} + +div.highlight .-Color[class*=-BGC62] { + background-color: #5F5FD7 +} + +div.highlight .-Color[class*=-C63] { + color: #5F5FFF +} + +div.highlight .-Color[class*=-BGC63] { + background-color: #5F5FFF +} + +div.highlight .-Color[class*=-C64] { + color: #5F8700 +} + +div.highlight .-Color[class*=-BGC64] { + background-color: #5F8700 +} + +div.highlight .-Color[class*=-C65] { + color: #5F875F +} + +div.highlight .-Color[class*=-BGC65] { + background-color: #5F875F +} + +div.highlight .-Color[class*=-C66] { + color: #5F8787 +} + +div.highlight .-Color[class*=-BGC66] { + background-color: #5F8787 +} + +div.highlight .-Color[class*=-C67] { + color: #5F87AF +} + +div.highlight .-Color[class*=-BGC67] { + background-color: #5F87AF +} + +div.highlight .-Color[class*=-C68] { + color: #5F87D7 +} + +div.highlight .-Color[class*=-BGC68] { + background-color: #5F87D7 +} + +div.highlight .-Color[class*=-C69] { + color: #5F87FF +} + +div.highlight .-Color[class*=-BGC69] { + background-color: #5F87FF +} + +div.highlight .-Color[class*=-C70] { + color: #5FAF00 +} + +div.highlight .-Color[class*=-BGC70] { + background-color: #5FAF00 +} + +div.highlight .-Color[class*=-C71] { + color: #5FAF5F +} + +div.highlight .-Color[class*=-BGC71] { + background-color: #5FAF5F +} + +div.highlight .-Color[class*=-C72] { + color: #5FAF87 +} + +div.highlight .-Color[class*=-BGC72] { + background-color: #5FAF87 +} + +div.highlight .-Color[class*=-C73] { + color: #5FAFAF +} + +div.highlight .-Color[class*=-BGC73] { + background-color: #5FAFAF +} + +div.highlight .-Color[class*=-C74] { + color: #5FAFD7 +} + +div.highlight .-Color[class*=-BGC74] { + background-color: #5FAFD7 +} + +div.highlight .-Color[class*=-C75] { + color: #5FAFFF +} + +div.highlight .-Color[class*=-BGC75] { + background-color: #5FAFFF +} + +div.highlight .-Color[class*=-C76] { + color: #5FD700 +} + +div.highlight .-Color[class*=-BGC76] { + background-color: #5FD700 +} + +div.highlight .-Color[class*=-C77] { + color: #5FD75F +} + +div.highlight .-Color[class*=-BGC77] { + background-color: #5FD75F +} + +div.highlight .-Color[class*=-C78] { + color: #5FD787 +} + +div.highlight .-Color[class*=-BGC78] { + background-color: #5FD787 +} + +div.highlight .-Color[class*=-C79] { + color: #5FD7AF +} + +div.highlight .-Color[class*=-BGC79] { + background-color: #5FD7AF +} + +div.highlight .-Color[class*=-C80] { + color: #5FD7D7 +} + +div.highlight .-Color[class*=-BGC80] { + background-color: #5FD7D7 +} + +div.highlight .-Color[class*=-C81] { + color: #5FD7FF +} + +div.highlight .-Color[class*=-BGC81] { + background-color: #5FD7FF +} + +div.highlight .-Color[class*=-C82] { + color: #5FFF00 +} + +div.highlight .-Color[class*=-BGC82] { + background-color: #5FFF00 +} + +div.highlight .-Color[class*=-C83] { + color: #5FFF5F +} + +div.highlight .-Color[class*=-BGC83] { + background-color: #5FFF5F +} + +div.highlight .-Color[class*=-C84] { + color: #5FFF87 +} + +div.highlight .-Color[class*=-BGC84] { + background-color: #5FFF87 +} + +div.highlight .-Color[class*=-C85] { + color: #5FFFAF +} + +div.highlight .-Color[class*=-BGC85] { + background-color: #5FFFAF +} + +div.highlight .-Color[class*=-C86] { + color: #5FFFD7 +} + +div.highlight .-Color[class*=-BGC86] { + background-color: #5FFFD7 +} + +div.highlight .-Color[class*=-C87] { + color: #5FFFFF +} + +div.highlight .-Color[class*=-BGC87] { + background-color: #5FFFFF +} + +div.highlight .-Color[class*=-C88] { + color: #870000 +} + +div.highlight .-Color[class*=-BGC88] { + background-color: #870000 +} + +div.highlight .-Color[class*=-C89] { + color: #87005F +} + +div.highlight .-Color[class*=-BGC89] { + background-color: #87005F +} + +div.highlight .-Color[class*=-C90] { + color: #870087 +} + +div.highlight .-Color[class*=-BGC90] { + background-color: #870087 +} + +div.highlight .-Color[class*=-C91] { + color: #8700AF +} + +div.highlight .-Color[class*=-BGC91] { + background-color: #8700AF +} + +div.highlight .-Color[class*=-C92] { + color: #8700D7 +} + +div.highlight .-Color[class*=-BGC92] { + background-color: #8700D7 +} + +div.highlight .-Color[class*=-C93] { + color: #8700FF +} + +div.highlight .-Color[class*=-BGC93] { + background-color: #8700FF +} + +div.highlight .-Color[class*=-C94] { + color: #875F00 +} + +div.highlight .-Color[class*=-BGC94] { + background-color: #875F00 +} + +div.highlight .-Color[class*=-C95] { + color: #875F5F +} + +div.highlight .-Color[class*=-BGC95] { + background-color: #875F5F +} + +div.highlight .-Color[class*=-C96] { + color: #875F87 +} + +div.highlight .-Color[class*=-BGC96] { + background-color: #875F87 +} + +div.highlight .-Color[class*=-C97] { + color: #875FAF +} + +div.highlight .-Color[class*=-BGC97] { + background-color: #875FAF +} + +div.highlight .-Color[class*=-C98] { + color: #875FD7 +} + +div.highlight .-Color[class*=-BGC98] { + background-color: #875FD7 +} + +div.highlight .-Color[class*=-C99] { + color: #875FFF +} + +div.highlight .-Color[class*=-BGC99] { + background-color: #875FFF +} + +div.highlight .-Color[class*=-C100] { + color: #878700 +} + +div.highlight .-Color[class*=-BGC100] { + background-color: #878700 +} + +div.highlight .-Color[class*=-C101] { + color: #87875F +} + +div.highlight .-Color[class*=-BGC101] { + background-color: #87875F +} + +div.highlight .-Color[class*=-C102] { + color: #878787 +} + +div.highlight .-Color[class*=-BGC102] { + background-color: #878787 +} + +div.highlight .-Color[class*=-C103] { + color: #8787AF +} + +div.highlight .-Color[class*=-BGC103] { + background-color: #8787AF +} + +div.highlight .-Color[class*=-C104] { + color: #8787D7 +} + +div.highlight .-Color[class*=-BGC104] { + background-color: #8787D7 +} + +div.highlight .-Color[class*=-C105] { + color: #8787FF +} + +div.highlight .-Color[class*=-BGC105] { + background-color: #8787FF +} + +div.highlight .-Color[class*=-C106] { + color: #87AF00 +} + +div.highlight .-Color[class*=-BGC106] { + background-color: #87AF00 +} + +div.highlight .-Color[class*=-C107] { + color: #87AF5F +} + +div.highlight .-Color[class*=-BGC107] { + background-color: #87AF5F +} + +div.highlight .-Color[class*=-C108] { + color: #87AF87 +} + +div.highlight .-Color[class*=-BGC108] { + background-color: #87AF87 +} + +div.highlight .-Color[class*=-C109] { + color: #87AFAF +} + +div.highlight .-Color[class*=-BGC109] { + background-color: #87AFAF +} + +div.highlight .-Color[class*=-C110] { + color: #87AFD7 +} + +div.highlight .-Color[class*=-BGC110] { + background-color: #87AFD7 +} + +div.highlight .-Color[class*=-C111] { + color: #87AFFF +} + +div.highlight .-Color[class*=-BGC111] { + background-color: #87AFFF +} + +div.highlight .-Color[class*=-C112] { + color: #87D700 +} + +div.highlight .-Color[class*=-BGC112] { + background-color: #87D700 +} + +div.highlight .-Color[class*=-C113] { + color: #87D75F +} + +div.highlight .-Color[class*=-BGC113] { + background-color: #87D75F +} + +div.highlight .-Color[class*=-C114] { + color: #87D787 +} + +div.highlight .-Color[class*=-BGC114] { + background-color: #87D787 +} + +div.highlight .-Color[class*=-C115] { + color: #87D7AF +} + +div.highlight .-Color[class*=-BGC115] { + background-color: #87D7AF +} + +div.highlight .-Color[class*=-C116] { + color: #87D7D7 +} + +div.highlight .-Color[class*=-BGC116] { + background-color: #87D7D7 +} + +div.highlight .-Color[class*=-C117] { + color: #87D7FF +} + +div.highlight .-Color[class*=-BGC117] { + background-color: #87D7FF +} + +div.highlight .-Color[class*=-C118] { + color: #87FF00 +} + +div.highlight .-Color[class*=-BGC118] { + background-color: #87FF00 +} + +div.highlight .-Color[class*=-C119] { + color: #87FF5F +} + +div.highlight .-Color[class*=-BGC119] { + background-color: #87FF5F +} + +div.highlight .-Color[class*=-C120] { + color: #87FF87 +} + +div.highlight .-Color[class*=-BGC120] { + background-color: #87FF87 +} + +div.highlight .-Color[class*=-C121] { + color: #87FFAF +} + +div.highlight .-Color[class*=-BGC121] { + background-color: #87FFAF +} + +div.highlight .-Color[class*=-C122] { + color: #87FFD7 +} + +div.highlight .-Color[class*=-BGC122] { + background-color: #87FFD7 +} + +div.highlight .-Color[class*=-C123] { + color: #87FFFF +} + +div.highlight .-Color[class*=-BGC123] { + background-color: #87FFFF +} + +div.highlight .-Color[class*=-C124] { + color: #AF0000 +} + +div.highlight .-Color[class*=-BGC124] { + background-color: #AF0000 +} + +div.highlight .-Color[class*=-C125] { + color: #AF005F +} + +div.highlight .-Color[class*=-BGC125] { + background-color: #AF005F +} + +div.highlight .-Color[class*=-C126] { + color: #AF0087 +} + +div.highlight .-Color[class*=-BGC126] { + background-color: #AF0087 +} + +div.highlight .-Color[class*=-C127] { + color: #AF00AF +} + +div.highlight .-Color[class*=-BGC127] { + background-color: #AF00AF +} + +div.highlight .-Color[class*=-C128] { + color: #AF00D7 +} + +div.highlight .-Color[class*=-BGC128] { + background-color: #AF00D7 +} + +div.highlight .-Color[class*=-C129] { + color: #AF00FF +} + +div.highlight .-Color[class*=-BGC129] { + background-color: #AF00FF +} + +div.highlight .-Color[class*=-C130] { + color: #AF5F00 +} + +div.highlight .-Color[class*=-BGC130] { + background-color: #AF5F00 +} + +div.highlight .-Color[class*=-C131] { + color: #AF5F5F +} + +div.highlight .-Color[class*=-BGC131] { + background-color: #AF5F5F +} + +div.highlight .-Color[class*=-C132] { + color: #AF5F87 +} + +div.highlight .-Color[class*=-BGC132] { + background-color: #AF5F87 +} + +div.highlight .-Color[class*=-C133] { + color: #AF5FAF +} + +div.highlight .-Color[class*=-BGC133] { + background-color: #AF5FAF +} + +div.highlight .-Color[class*=-C134] { + color: #AF5FD7 +} + +div.highlight .-Color[class*=-BGC134] { + background-color: #AF5FD7 +} + +div.highlight .-Color[class*=-C135] { + color: #AF5FFF +} + +div.highlight .-Color[class*=-BGC135] { + background-color: #AF5FFF +} + +div.highlight .-Color[class*=-C136] { + color: #AF8700 +} + +div.highlight .-Color[class*=-BGC136] { + background-color: #AF8700 +} + +div.highlight .-Color[class*=-C137] { + color: #AF875F +} + +div.highlight .-Color[class*=-BGC137] { + background-color: #AF875F +} + +div.highlight .-Color[class*=-C138] { + color: #AF8787 +} + +div.highlight .-Color[class*=-BGC138] { + background-color: #AF8787 +} + +div.highlight .-Color[class*=-C139] { + color: #AF87AF +} + +div.highlight .-Color[class*=-BGC139] { + background-color: #AF87AF +} + +div.highlight .-Color[class*=-C140] { + color: #AF87D7 +} + +div.highlight .-Color[class*=-BGC140] { + background-color: #AF87D7 +} + +div.highlight .-Color[class*=-C141] { + color: #AF87FF +} + +div.highlight .-Color[class*=-BGC141] { + background-color: #AF87FF +} + +div.highlight .-Color[class*=-C142] { + color: #AFAF00 +} + +div.highlight .-Color[class*=-BGC142] { + background-color: #AFAF00 +} + +div.highlight .-Color[class*=-C143] { + color: #AFAF5F +} + +div.highlight .-Color[class*=-BGC143] { + background-color: #AFAF5F +} + +div.highlight .-Color[class*=-C144] { + color: #AFAF87 +} + +div.highlight .-Color[class*=-BGC144] { + background-color: #AFAF87 +} + +div.highlight 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background-color: #FF5F5F +} + +div.highlight .-Color[class*=-C204] { + color: #FF5F87 +} + +div.highlight .-Color[class*=-BGC204] { + background-color: #FF5F87 +} + +div.highlight .-Color[class*=-C205] { + color: #FF5FAF +} + +div.highlight .-Color[class*=-BGC205] { + background-color: #FF5FAF +} + +div.highlight .-Color[class*=-C206] { + color: #FF5FD7 +} + +div.highlight .-Color[class*=-BGC206] { + background-color: #FF5FD7 +} + +div.highlight .-Color[class*=-C207] { + color: #FF5FFF +} + +div.highlight .-Color[class*=-BGC207] { + background-color: #FF5FFF +} + +div.highlight .-Color[class*=-C208] { + color: #FF8700 +} + +div.highlight .-Color[class*=-BGC208] { + background-color: #FF8700 +} + +div.highlight .-Color[class*=-C209] { + color: #FF875F +} + +div.highlight .-Color[class*=-BGC209] { + background-color: #FF875F +} + +div.highlight .-Color[class*=-C210] { + color: #FF8787 +} + +div.highlight .-Color[class*=-BGC210] { + background-color: #FF8787 +} + +div.highlight 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+div.highlight .-Color[class*=-BGC240] { + background-color: #585858 +} + +div.highlight .-Color[class*=-C241] { + color: #626262 +} + +div.highlight .-Color[class*=-BGC241] { + background-color: #626262 +} + +div.highlight .-Color[class*=-C242] { + color: #6C6C6C +} + +div.highlight .-Color[class*=-BGC242] { + background-color: #6C6C6C +} + +div.highlight .-Color[class*=-C243] { + color: #767676 +} + +div.highlight .-Color[class*=-BGC243] { + background-color: #767676 +} + +div.highlight .-Color[class*=-C244] { + color: #808080 +} + +div.highlight .-Color[class*=-BGC244] { + background-color: #808080 +} + +div.highlight .-Color[class*=-C245] { + color: #8A8A8A +} + +div.highlight .-Color[class*=-BGC245] { + background-color: #8A8A8A +} + +div.highlight .-Color[class*=-C246] { + color: #949494 +} + +div.highlight .-Color[class*=-BGC246] { + background-color: #949494 +} + +div.highlight .-Color[class*=-C247] { + color: #9E9E9E +} + +div.highlight .-Color[class*=-BGC247] { + background-color: #9E9E9E +} + +div.highlight .-Color[class*=-C248] { + color: #A8A8A8 +} + +div.highlight .-Color[class*=-BGC248] { + background-color: #A8A8A8 +} + +div.highlight .-Color[class*=-C249] { + color: #B2B2B2 +} + +div.highlight .-Color[class*=-BGC249] { + background-color: #B2B2B2 +} + +div.highlight .-Color[class*=-C250] { + color: #BCBCBC +} + +div.highlight .-Color[class*=-BGC250] { + background-color: #BCBCBC +} + +div.highlight .-Color[class*=-C251] { + color: #C6C6C6 +} + +div.highlight .-Color[class*=-BGC251] { + background-color: #C6C6C6 +} + +div.highlight .-Color[class*=-C252] { + color: #D0D0D0 +} + +div.highlight .-Color[class*=-BGC252] { + background-color: #D0D0D0 +} + +div.highlight .-Color[class*=-C253] { + color: #DADADA +} + +div.highlight .-Color[class*=-BGC253] { + background-color: #DADADA +} + +div.highlight .-Color[class*=-C254] { + color: #E4E4E4 +} + +div.highlight .-Color[class*=-BGC254] { + background-color: #E4E4E4 +} + +div.highlight .-Color[class*=-C255] { + color: #EEEEEE +} + +div.highlight .-Color[class*=-BGC255] { + background-color: #EEEEEE +} diff --git a/branch/main/singlehtml/_static/overrides.css b/branch/main/singlehtml/_static/overrides.css new file mode 100644 index 0000000..26a0f16 --- /dev/null +++ b/branch/main/singlehtml/_static/overrides.css @@ -0,0 +1,98 @@ +/* + * colors = ['#0271AE', '#DC2830', '#FFC438', # blue, red, light orange + * '#6E3B87', '#008D5D', '#FA902D', # purple, green, orange + * '#0095B7', '#CB0C7B', '#F7E43C', # cyan, magenta, yellow + * '#88B93B', '#444F95', '#F16232'] # pea green, dark blue, dark orange + * + * To use them in rST, you need to define a command in the epilog, see conf.py + */ +.blue {color: #0271AE;} +.red {color: #DC2830;} +.orange {color: #FFC438;} +.purple {color: #633B87;} +.green {color: #008D5D;} +.dkorange {color: #FA902D;} +.cyan {color: #0095B7;} +.magenta {color: #CB0C8B;} +.yellow {color: #F7E43C;} +.peagreen {color: #88B93B;} +.darkblue {color: 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and returns the new score. + /* + score: result => { + const [docname, title, anchor, descr, score, filename] = result + return score + }, + */ + + // query matches the full name of an object + objNameMatch: 11, + // or matches in the last dotted part of the object name + objPartialMatch: 6, + // Additive scores depending on the priority of the object + objPrio: { + 0: 15, // used to be importantResults + 1: 5, // used to be objectResults + 2: -5, // used to be unimportantResults + }, + // Used when the priority is not in the mapping. + objPrioDefault: 0, + + // query found in title + title: 15, + partialTitle: 7, + // query found in terms + term: 5, + partialTerm: 2, + }; +} + +const _removeChildren = (element) => { + while (element && element.lastChild) element.removeChild(element.lastChild); +}; + +/** + * See https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions#escaping + */ +const _escapeRegExp = (string) => + string.replace(/[.*+\-?^${}()|[\]\\]/g, "\\$&"); // $& means the whole matched string + +const _displayItem = (item, searchTerms, highlightTerms) => { + const docBuilder = DOCUMENTATION_OPTIONS.BUILDER; + const docFileSuffix = DOCUMENTATION_OPTIONS.FILE_SUFFIX; + const docLinkSuffix = DOCUMENTATION_OPTIONS.LINK_SUFFIX; + const showSearchSummary = DOCUMENTATION_OPTIONS.SHOW_SEARCH_SUMMARY; + const contentRoot = document.documentElement.dataset.content_root; + + const [docName, title, anchor, descr, score, _filename] = item; + + let listItem = document.createElement("li"); + let requestUrl; + let linkUrl; + if (docBuilder === "dirhtml") { + // dirhtml builder + let dirname = docName + "/"; + if (dirname.match(/\/index\/$/)) + dirname = dirname.substring(0, dirname.length - 6); + else if (dirname === "index/") dirname = ""; + requestUrl = contentRoot + dirname; + linkUrl = requestUrl; + } else { + // normal html builders + requestUrl = contentRoot + docName + docFileSuffix; + linkUrl = docName + docLinkSuffix; + } + let linkEl = listItem.appendChild(document.createElement("a")); + linkEl.href = linkUrl + anchor; + linkEl.dataset.score = score; + linkEl.innerHTML = title; + if (descr) { + listItem.appendChild(document.createElement("span")).innerHTML = + " (" + descr + ")"; + // highlight search terms in the description + if (SPHINX_HIGHLIGHT_ENABLED) // set in sphinx_highlight.js + highlightTerms.forEach((term) => _highlightText(listItem, term, "highlighted")); + } + else if (showSearchSummary) + fetch(requestUrl) + .then((responseData) => responseData.text()) + .then((data) => { + if (data) + listItem.appendChild( + Search.makeSearchSummary(data, searchTerms, anchor) + ); + // highlight search terms in the summary + if (SPHINX_HIGHLIGHT_ENABLED) // set in sphinx_highlight.js + highlightTerms.forEach((term) => _highlightText(listItem, term, "highlighted")); + }); + Search.output.appendChild(listItem); +}; +const _finishSearch = (resultCount) => { + Search.stopPulse(); + Search.title.innerText = _("Search Results"); + if (!resultCount) + Search.status.innerText = Documentation.gettext( + "Your search did not match any documents. Please make sure that all words are spelled correctly and that you've selected enough categories." + ); + else + Search.status.innerText = _( + "Search finished, found ${resultCount} page(s) matching the search query." + ).replace('${resultCount}', resultCount); +}; +const _displayNextItem = ( + results, + resultCount, + searchTerms, + highlightTerms, +) => { + // results left, load the summary and display it + // this is intended to be dynamic (don't sub resultsCount) + if (results.length) { + _displayItem(results.pop(), searchTerms, highlightTerms); + setTimeout( + () => _displayNextItem(results, resultCount, searchTerms, highlightTerms), + 5 + ); + } + // search finished, update title and status message + else _finishSearch(resultCount); +}; +// Helper function used by query() to order search results. +// Each input is an array of [docname, title, anchor, descr, score, filename]. +// Order the results by score (in opposite order of appearance, since the +// `_displayNextItem` function uses pop() to retrieve items) and then alphabetically. +const _orderResultsByScoreThenName = (a, b) => { + const leftScore = a[4]; + const rightScore = b[4]; + if (leftScore === rightScore) { + // same score: sort alphabetically + const leftTitle = a[1].toLowerCase(); + const rightTitle = b[1].toLowerCase(); + if (leftTitle === rightTitle) return 0; + return leftTitle > rightTitle ? -1 : 1; // inverted is intentional + } + return leftScore > rightScore ? 1 : -1; +}; + +/** + * Default splitQuery function. Can be overridden in ``sphinx.search`` with a + * custom function per language. + * + * The regular expression works by splitting the string on consecutive characters + * that are not Unicode letters, numbers, underscores, or emoji characters. + * This is the same as ``\W+`` in Python, preserving the surrogate pair area. + */ +if (typeof splitQuery === "undefined") { + var splitQuery = (query) => query + .split(/[^\p{Letter}\p{Number}_\p{Emoji_Presentation}]+/gu) + .filter(term => term) // remove remaining empty strings +} + +/** + * Search Module + */ +const Search = { + _index: null, + _queued_query: null, + _pulse_status: -1, + + htmlToText: (htmlString, anchor) => { + const htmlElement = new DOMParser().parseFromString(htmlString, 'text/html'); + for (const removalQuery of [".headerlink", "script", "style"]) { + htmlElement.querySelectorAll(removalQuery).forEach((el) => { el.remove() }); + } + if (anchor) { + const anchorContent = htmlElement.querySelector(`[role="main"] ${anchor}`); + if (anchorContent) return anchorContent.textContent; + + console.warn( + `Anchored content block not found. Sphinx search tries to obtain it via DOM query '[role=main] ${anchor}'. Check your theme or template.` + ); + } + + // if anchor not specified or not found, fall back to main content + const docContent = htmlElement.querySelector('[role="main"]'); + if (docContent) return docContent.textContent; + + console.warn( + "Content block not found. Sphinx search tries to obtain it via DOM query '[role=main]'. Check your theme or template." + ); + return ""; + }, + + init: () => { + const query = new URLSearchParams(window.location.search).get("q"); + document + .querySelectorAll('input[name="q"]') + .forEach((el) => (el.value = query)); + if (query) Search.performSearch(query); + }, + + loadIndex: (url) => + (document.body.appendChild(document.createElement("script")).src = url), + + setIndex: (index) => { + Search._index = index; + if (Search._queued_query !== null) { + const query = Search._queued_query; + Search._queued_query = null; + Search.query(query); + } + }, + + hasIndex: () => Search._index !== null, + + deferQuery: (query) => (Search._queued_query = query), + + stopPulse: () => (Search._pulse_status = -1), + + startPulse: () => { + if (Search._pulse_status >= 0) return; + + const pulse = () => { + Search._pulse_status = (Search._pulse_status + 1) % 4; + Search.dots.innerText = ".".repeat(Search._pulse_status); + if (Search._pulse_status >= 0) window.setTimeout(pulse, 500); + }; + pulse(); + }, + + /** + * perform a search for something (or wait until index is loaded) + */ + performSearch: (query) => { + // create the required interface elements + const searchText = document.createElement("h2"); + searchText.textContent = _("Searching"); + const searchSummary = document.createElement("p"); + searchSummary.classList.add("search-summary"); + searchSummary.innerText = ""; + const searchList = document.createElement("ul"); + searchList.classList.add("search"); + + const out = document.getElementById("search-results"); + Search.title = out.appendChild(searchText); + Search.dots = Search.title.appendChild(document.createElement("span")); + Search.status = out.appendChild(searchSummary); + Search.output = out.appendChild(searchList); + + const searchProgress = document.getElementById("search-progress"); + // Some themes don't use the search progress node + if (searchProgress) { + searchProgress.innerText = _("Preparing search..."); + } + Search.startPulse(); + + // index already loaded, the browser was quick! + if (Search.hasIndex()) Search.query(query); + else Search.deferQuery(query); + }, + + _parseQuery: (query) => { + // stem the search terms and add them to the correct list + const stemmer = new Stemmer(); + const searchTerms = new Set(); + const excludedTerms = new Set(); + const highlightTerms = new Set(); + const objectTerms = new Set(splitQuery(query.toLowerCase().trim())); + splitQuery(query.trim()).forEach((queryTerm) => { + const queryTermLower = queryTerm.toLowerCase(); + + // maybe skip this "word" + // stopwords array is from language_data.js + if ( + stopwords.indexOf(queryTermLower) !== -1 || + queryTerm.match(/^\d+$/) + ) + return; + + // stem the word + let word = stemmer.stemWord(queryTermLower); + // select the correct list + if (word[0] === "-") excludedTerms.add(word.substr(1)); + else { + searchTerms.add(word); + highlightTerms.add(queryTermLower); + } + }); + + if (SPHINX_HIGHLIGHT_ENABLED) { // set in sphinx_highlight.js + localStorage.setItem("sphinx_highlight_terms", [...highlightTerms].join(" ")) + } + + // console.debug("SEARCH: searching for:"); + // console.info("required: ", [...searchTerms]); + // console.info("excluded: ", [...excludedTerms]); + + return [query, searchTerms, excludedTerms, highlightTerms, objectTerms]; + }, + + /** + * execute search (requires search index to be loaded) + */ + _performSearch: (query, searchTerms, excludedTerms, highlightTerms, objectTerms) => { + const filenames = Search._index.filenames; + const docNames = Search._index.docnames; + const titles = Search._index.titles; + const allTitles = Search._index.alltitles; + const indexEntries = Search._index.indexentries; + + // Collect multiple result groups to be sorted separately and then ordered. + // Each is an array of [docname, title, anchor, descr, score, filename]. + const normalResults = []; + const nonMainIndexResults = []; + + _removeChildren(document.getElementById("search-progress")); + + const queryLower = query.toLowerCase().trim(); + for (const [title, foundTitles] of Object.entries(allTitles)) { + if (title.toLowerCase().trim().includes(queryLower) && (queryLower.length >= title.length/2)) { + for (const [file, id] of foundTitles) { + const score = Math.round(Scorer.title * queryLower.length / title.length); + const boost = titles[file] === title ? 1 : 0; // add a boost for document titles + normalResults.push([ + docNames[file], + titles[file] !== title ? `${titles[file]} > ${title}` : title, + id !== null ? "#" + id : "", + null, + score + boost, + filenames[file], + ]); + } + } + } + + // search for explicit entries in index directives + for (const [entry, foundEntries] of Object.entries(indexEntries)) { + if (entry.includes(queryLower) && (queryLower.length >= entry.length/2)) { + for (const [file, id, isMain] of foundEntries) { + const score = Math.round(100 * queryLower.length / entry.length); + const result = [ + docNames[file], + titles[file], + id ? "#" + id : "", + null, + score, + filenames[file], + ]; + if (isMain) { + normalResults.push(result); + } else { + nonMainIndexResults.push(result); + } + } + } + } + + // lookup as object + objectTerms.forEach((term) => + normalResults.push(...Search.performObjectSearch(term, objectTerms)) + ); + + // lookup as search terms in fulltext + normalResults.push(...Search.performTermsSearch(searchTerms, excludedTerms)); + + // let the scorer override scores with a custom scoring function + if (Scorer.score) { + normalResults.forEach((item) => (item[4] = Scorer.score(item))); + nonMainIndexResults.forEach((item) => (item[4] = Scorer.score(item))); + } + + // Sort each group of results by score and then alphabetically by name. + normalResults.sort(_orderResultsByScoreThenName); + nonMainIndexResults.sort(_orderResultsByScoreThenName); + + // Combine the result groups in (reverse) order. + // Non-main index entries are typically arbitrary cross-references, + // so display them after other results. + let results = [...nonMainIndexResults, ...normalResults]; + + // remove duplicate search results + // note the reversing of results, so that in the case of duplicates, the highest-scoring entry is kept + let seen = new Set(); + results = results.reverse().reduce((acc, result) => { + let resultStr = result.slice(0, 4).concat([result[5]]).map(v => String(v)).join(','); + if (!seen.has(resultStr)) { + acc.push(result); + seen.add(resultStr); + } + return acc; + }, []); + + return results.reverse(); + }, + + query: (query) => { + const [searchQuery, searchTerms, excludedTerms, highlightTerms, objectTerms] = Search._parseQuery(query); + const results = Search._performSearch(searchQuery, searchTerms, excludedTerms, highlightTerms, objectTerms); + + // for debugging + //Search.lastresults = results.slice(); // a copy + // console.info("search results:", Search.lastresults); + + // print the results + _displayNextItem(results, results.length, searchTerms, highlightTerms); + }, + + /** + * search for object names + */ + performObjectSearch: (object, objectTerms) => { + const filenames = Search._index.filenames; + const docNames = Search._index.docnames; + const objects = Search._index.objects; + const objNames = Search._index.objnames; + const titles = Search._index.titles; + + const results = []; + + const objectSearchCallback = (prefix, match) => { + const name = match[4] + const fullname = (prefix ? prefix + "." : "") + name; + const fullnameLower = fullname.toLowerCase(); + if (fullnameLower.indexOf(object) < 0) return; + + let score = 0; + const parts = fullnameLower.split("."); + + // check for different match types: exact matches of full name or + // "last name" (i.e. last dotted part) + if (fullnameLower === object || parts.slice(-1)[0] === object) + score += Scorer.objNameMatch; + else if (parts.slice(-1)[0].indexOf(object) > -1) + score += Scorer.objPartialMatch; // matches in last name + + const objName = objNames[match[1]][2]; + const title = titles[match[0]]; + + // If more than one term searched for, we require other words to be + // found in the name/title/description + const otherTerms = new Set(objectTerms); + otherTerms.delete(object); + if (otherTerms.size > 0) { + const haystack = `${prefix} ${name} ${objName} ${title}`.toLowerCase(); + if ( + [...otherTerms].some((otherTerm) => haystack.indexOf(otherTerm) < 0) + ) + return; + } + + let anchor = match[3]; + if (anchor === "") anchor = fullname; + else if (anchor === "-") anchor = objNames[match[1]][1] + "-" + fullname; + + const descr = objName + _(", in ") + title; + + // add custom score for some objects according to scorer + if (Scorer.objPrio.hasOwnProperty(match[2])) + score += Scorer.objPrio[match[2]]; + else score += Scorer.objPrioDefault; + + results.push([ + docNames[match[0]], + fullname, + "#" + anchor, + descr, + score, + filenames[match[0]], + ]); + }; + Object.keys(objects).forEach((prefix) => + objects[prefix].forEach((array) => + objectSearchCallback(prefix, array) + ) + ); + return results; + }, + + /** + * search for full-text terms in the index + */ + performTermsSearch: (searchTerms, excludedTerms) => { + // prepare search + const terms = Search._index.terms; + const titleTerms = Search._index.titleterms; + const filenames = Search._index.filenames; + const docNames = Search._index.docnames; + const titles = Search._index.titles; + + const scoreMap = new Map(); + const fileMap = new Map(); + + // perform the search on the required terms + searchTerms.forEach((word) => { + const files = []; + const arr = [ + { files: terms[word], score: Scorer.term }, + { files: titleTerms[word], score: Scorer.title }, + ]; + // add support for partial matches + if (word.length > 2) { + const escapedWord = _escapeRegExp(word); + if (!terms.hasOwnProperty(word)) { + Object.keys(terms).forEach((term) => { + if (term.match(escapedWord)) + arr.push({ files: terms[term], score: Scorer.partialTerm }); + }); + } + if (!titleTerms.hasOwnProperty(word)) { + Object.keys(titleTerms).forEach((term) => { + if (term.match(escapedWord)) + arr.push({ files: titleTerms[term], score: Scorer.partialTitle }); + }); + } + } + + // no match but word was a required one + if (arr.every((record) => record.files === undefined)) return; + + // found search word in contents + arr.forEach((record) => { + if (record.files === undefined) return; + + let recordFiles = record.files; + if (recordFiles.length === undefined) recordFiles = [recordFiles]; + files.push(...recordFiles); + + // set score for the word in each file + recordFiles.forEach((file) => { + if (!scoreMap.has(file)) scoreMap.set(file, {}); + scoreMap.get(file)[word] = record.score; + }); + }); + + // create the mapping + files.forEach((file) => { + if (!fileMap.has(file)) fileMap.set(file, [word]); + else if (fileMap.get(file).indexOf(word) === -1) fileMap.get(file).push(word); + }); + }); + + // now check if the files don't contain excluded terms + const results = []; + for (const [file, wordList] of fileMap) { + // check if all requirements are matched + + // as search terms with length < 3 are discarded + const filteredTermCount = [...searchTerms].filter( + (term) => term.length > 2 + ).length; + if ( + wordList.length !== searchTerms.size && + wordList.length !== filteredTermCount + ) + continue; + + // ensure that none of the excluded terms is in the search result + if ( + [...excludedTerms].some( + (term) => + terms[term] === file || + titleTerms[term] === file || + (terms[term] || []).includes(file) || + (titleTerms[term] || []).includes(file) + ) + ) + break; + + // select one (max) score for the file. + const score = Math.max(...wordList.map((w) => scoreMap.get(file)[w])); + // add result to the result list + results.push([ + docNames[file], + titles[file], + "", + null, + score, + filenames[file], + ]); + } + return results; + }, + + /** + * helper function to return a node containing the + * search summary for a given text. keywords is a list + * of stemmed words. + */ + makeSearchSummary: (htmlText, keywords, anchor) => { + const text = Search.htmlToText(htmlText, anchor); + if (text === "") return null; + + const textLower = text.toLowerCase(); + const actualStartPosition = [...keywords] + .map((k) => textLower.indexOf(k.toLowerCase())) + .filter((i) => i > -1) + .slice(-1)[0]; + const startWithContext = Math.max(actualStartPosition - 120, 0); + + const top = startWithContext === 0 ? "" : "..."; + const tail = startWithContext + 240 < text.length ? "..." : ""; + + let summary = document.createElement("p"); + summary.classList.add("context"); + summary.textContent = top + text.substr(startWithContext, 240).trim() + tail; + + return summary; + }, +}; + +_ready(Search.init); diff --git a/branch/main/singlehtml/_static/sphinx_highlight.js b/branch/main/singlehtml/_static/sphinx_highlight.js new file mode 100644 index 0000000..8a96c69 --- /dev/null +++ b/branch/main/singlehtml/_static/sphinx_highlight.js @@ -0,0 +1,154 @@ +/* Highlighting utilities for Sphinx HTML documentation. */ +"use strict"; + +const SPHINX_HIGHLIGHT_ENABLED = true + +/** + * highlight a given string on a node by wrapping it in + * span elements with the given class name. + */ +const _highlight = (node, addItems, text, className) => { + if (node.nodeType === Node.TEXT_NODE) { + const val = node.nodeValue; + const parent = node.parentNode; + const pos = val.toLowerCase().indexOf(text); + if ( + pos >= 0 && + !parent.classList.contains(className) && + !parent.classList.contains("nohighlight") + ) { + let span; + + const closestNode = parent.closest("body, svg, foreignObject"); + const isInSVG = closestNode && closestNode.matches("svg"); + if (isInSVG) { + span = document.createElementNS("http://www.w3.org/2000/svg", "tspan"); + } else { + span = document.createElement("span"); + span.classList.add(className); + } + + span.appendChild(document.createTextNode(val.substr(pos, text.length))); + const rest = document.createTextNode(val.substr(pos + text.length)); + parent.insertBefore( + span, + parent.insertBefore( + rest, + node.nextSibling + ) + ); + node.nodeValue = val.substr(0, pos); + /* There may be more occurrences of search term in this node. So call this + * function recursively on the remaining fragment. + */ + _highlight(rest, addItems, text, className); + + if (isInSVG) { + const rect = document.createElementNS( + "http://www.w3.org/2000/svg", + "rect" + ); + const bbox = parent.getBBox(); + rect.x.baseVal.value = bbox.x; + rect.y.baseVal.value = bbox.y; + rect.width.baseVal.value = bbox.width; + rect.height.baseVal.value = bbox.height; + rect.setAttribute("class", className); + addItems.push({ parent: parent, target: rect }); + } + } + } else if (node.matches && !node.matches("button, select, textarea")) { + node.childNodes.forEach((el) => _highlight(el, addItems, text, className)); + } +}; +const _highlightText = (thisNode, text, className) => { + let addItems = []; + _highlight(thisNode, addItems, text, className); + addItems.forEach((obj) => + obj.parent.insertAdjacentElement("beforebegin", obj.target) + ); +}; + +/** + * Small JavaScript module for the documentation. + */ +const SphinxHighlight = { + + /** + * highlight the search words provided in localstorage in the text + */ + highlightSearchWords: () => { + if (!SPHINX_HIGHLIGHT_ENABLED) return; // bail if no highlight + + // get and clear terms from localstorage + const url = new URL(window.location); + const highlight = + localStorage.getItem("sphinx_highlight_terms") + || url.searchParams.get("highlight") + || ""; + localStorage.removeItem("sphinx_highlight_terms") + url.searchParams.delete("highlight"); + window.history.replaceState({}, "", url); + + // get individual terms from highlight string + const terms = highlight.toLowerCase().split(/\s+/).filter(x => x); + if (terms.length === 0) return; // nothing to do + + // There should never be more than one element matching "div.body" + const divBody = document.querySelectorAll("div.body"); + const body = divBody.length ? divBody[0] : document.querySelector("body"); + window.setTimeout(() => { + terms.forEach((term) => _highlightText(body, term, "highlighted")); + }, 10); + + const searchBox = document.getElementById("searchbox"); + if (searchBox === null) return; + searchBox.appendChild( + document + .createRange() + .createContextualFragment( + '

' + + '' + + _("Hide Search Matches") + + "

" + ) + ); + }, + + /** + * helper function to hide the search marks again + */ + hideSearchWords: () => { + document + .querySelectorAll("#searchbox .highlight-link") + .forEach((el) => el.remove()); + document + .querySelectorAll("span.highlighted") + .forEach((el) => el.classList.remove("highlighted")); + localStorage.removeItem("sphinx_highlight_terms") + }, + + initEscapeListener: () => { + // only install a listener if it is really needed + if (!DOCUMENTATION_OPTIONS.ENABLE_SEARCH_SHORTCUTS) return; + + document.addEventListener("keydown", (event) => { + // bail for input elements + if (BLACKLISTED_KEY_CONTROL_ELEMENTS.has(document.activeElement.tagName)) return; + // bail with special keys + if (event.shiftKey || event.altKey || event.ctrlKey || event.metaKey) return; + if (DOCUMENTATION_OPTIONS.ENABLE_SEARCH_SHORTCUTS && (event.key === "Escape")) { + SphinxHighlight.hideSearchWords(); + event.preventDefault(); + } + }); + }, +}; + +_ready(() => { + /* Do not call highlightSearchWords() when we are on the search page. + * It will highlight words from the *previous* search query. + */ + if (typeof Search === "undefined") SphinxHighlight.highlightSearchWords(); + SphinxHighlight.initEscapeListener(); +}); diff --git a/branch/main/singlehtml/_static/sphinx_lesson.css b/branch/main/singlehtml/_static/sphinx_lesson.css new file mode 100644 index 0000000..14b20c6 --- /dev/null +++ b/branch/main/singlehtml/_static/sphinx_lesson.css @@ -0,0 +1,51 @@ +/* sphinx_lesson.css */ + +body.wy-body-for-nav img.with-border { + border: 2px solid; +} + +.rst-content .admonition-no-content { + padding-bottom: 0px; +} + +.rst-content .demo > .admonition-title::before { + content: "\01F440"; /* Eyes */ } +.rst-content .type-along > .admonition-title::before { + content: "\02328\0FE0F"; /* Keyboard */ } +.rst-content .exercise > .admonition-title::before { + content: "\0270D\0FE0F"; /* Hand */ } +.rst-content .solution > .admonition-title::before { + content: "\02714\0FE0E"; /* Check mark */ } +.rst-content .homework > .admonition-title::before { + content: "\01F4DD"; /* Memo */ } +.rst-content .discussion > .admonition-title::before { + content: "\01F4AC"; /* Speech balloon */ } +.rst-content .questions > .admonition-title::before { + content: "\02753\0FE0E"; /* Question mark */ } +.rst-content .prerequisites > .admonition-title::before { + content: "\02699"; /* Gear */ } +.rst-content .seealso > .admonition-title::before { + content: "\027A1\0FE0E"; /* Question mark */ } + + +/* instructor-note */ +.rst-content .instructor-note { + background: #e7e7e7; +} +.rst-content .instructor-note > .admonition-title { + background: #6a6a6a; +} +.rst-content .instructor-note > .admonition-title::before { + content: ""; +} + + +/* sphinx_toggle_button, make the font white */ +.rst-content .toggle.admonition button.toggle-button { + color: white; +} + +/* sphinx-togglebutton, remove underflow when toggled to hidden mode */ +.rst-content .admonition.toggle-hidden { + padding-bottom: 0px; +} diff --git a/branch/main/singlehtml/_static/sphinx_rtd_theme_ext_color_contrast.css b/branch/main/singlehtml/_static/sphinx_rtd_theme_ext_color_contrast.css new file mode 100644 index 0000000..e68feb8 --- /dev/null +++ b/branch/main/singlehtml/_static/sphinx_rtd_theme_ext_color_contrast.css @@ -0,0 +1,47 @@ +/* The following are for web accessibility of sphinx_rtd_theme: they + * solve some of the most frequent contrast issues. Remove when this + * solved: + * https://github.com/readthedocs/sphinx_rtd_theme/issues/971 + */ +/* background: #fcfcfc, note boxes #E7F2FA */ +a { color: #2573A7; } /* original #2980B9, #1F5C84; */ +body { color: #242424; } /* original #404040, #383838 */ +.wy-side-nav-search>a, .wy-side-nav-search .wy-dropdown>a { + color: #ffffff; +} /* original #fcfcfc */ +footer { color: #737373; } /* original gray=#808080*/ +footer span.commit code, footer span.commit .rst-content tt, .rst-content footer span.commit tt { + color: #737373; +} /* original gray=#808080*/ +.rst-content tt.literal, .rst-content tt.literal, .rst-content code.literal { + color: #AB2314; +} +/* Sidebar background */ +.wy-side-nav-search { background-color: #277CB4;} + +/* Same, but for pygments */ +.highlight .ch { color: #3E7A89; } /* #! line */ +.highlight .c1 { color: #3E7A89; } /* also comments */ +.highlight .nv { color: #AD3ECC; } /* variable */ +.highlight .gp { color: #B45608; } /* prompt character, $*/ +.highlight .si { color: #3975B1; } /* ${} variable text */ +.highlight .nc { color: #0C78A7; } + +/* Sphinx admonitions */ +/* warning */ +.wy-alert.wy-alert-warning .wy-alert-title, .rst-content .wy-alert-warning.note .wy-alert-title, .rst-content .attention .wy-alert-title, .rst-content .caution .wy-alert-title, .rst-content .wy-alert-warning.danger .wy-alert-title, .rst-content .wy-alert-warning.error .wy-alert-title, .rst-content .wy-alert-warning.hint .wy-alert-title, .rst-content .wy-alert-warning.important .wy-alert-title, .rst-content .wy-alert-warning.tip .wy-alert-title, .rst-content .warning .wy-alert-title, .rst-content .wy-alert-warning.seealso .wy-alert-title, .rst-content .admonition-todo .wy-alert-title, .rst-content .wy-alert-warning.admonition .wy-alert-title, .wy-alert.wy-alert-warning .rst-content .admonition-title, .rst-content .wy-alert.wy-alert-warning .admonition-title, .rst-content .wy-alert-warning.note .admonition-title, .rst-content .attention .admonition-title, .rst-content .caution .admonition-title, .rst-content .wy-alert-warning.danger .admonition-title, .rst-content .wy-alert-warning.error .admonition-title, .rst-content .wy-alert-warning.hint .admonition-title, .rst-content .wy-alert-warning.important .admonition-title, .rst-content .wy-alert-warning.tip .admonition-title, .rst-content .warning .admonition-title, .rst-content .wy-alert-warning.seealso .admonition-title, .rst-content .admonition-todo .admonition-title, .rst-content .wy-alert-warning.admonition .admonition-title { + background: #B15E16; } +/* important */ +.wy-alert.wy-alert-success .wy-alert-title, .rst-content .wy-alert-success.note .wy-alert-title, .rst-content .wy-alert-success.attention .wy-alert-title, .rst-content .wy-alert-success.caution .wy-alert-title, .rst-content .wy-alert-success.danger .wy-alert-title, .rst-content .wy-alert-success.error .wy-alert-title, .rst-content .hint .wy-alert-title, .rst-content .important .wy-alert-title, .rst-content .tip .wy-alert-title, .rst-content .wy-alert-success.warning .wy-alert-title, .rst-content .wy-alert-success.seealso .wy-alert-title, .rst-content .wy-alert-success.admonition-todo .wy-alert-title, .rst-content .wy-alert-success.admonition .wy-alert-title, .wy-alert.wy-alert-success .rst-content .admonition-title, .rst-content .wy-alert.wy-alert-success .admonition-title, .rst-content .wy-alert-success.note .admonition-title, .rst-content .wy-alert-success.attention .admonition-title, .rst-content .wy-alert-success.caution .admonition-title, .rst-content .wy-alert-success.danger .admonition-title, .rst-content .wy-alert-success.error .admonition-title, .rst-content .hint .admonition-title, .rst-content .important .admonition-title, .rst-content .tip .admonition-title, .rst-content .wy-alert-success.warning .admonition-title, .rst-content .wy-alert-success.seealso .admonition-title, .rst-content .wy-alert-success.admonition-todo .admonition-title, .rst-content .wy-alert-success.admonition .admonition-title { + background: #12826C; } +/* seealso, note, etc */ +.wy-alert.wy-alert-info .wy-alert-title, .rst-content .note .wy-alert-title, .rst-content .wy-alert-info.attention .wy-alert-title, .rst-content .wy-alert-info.caution .wy-alert-title, .rst-content .wy-alert-info.danger .wy-alert-title, .rst-content .wy-alert-info.error .wy-alert-title, .rst-content .wy-alert-info.hint .wy-alert-title, .rst-content .wy-alert-info.important .wy-alert-title, .rst-content .wy-alert-info.tip .wy-alert-title, .rst-content .wy-alert-info.warning .wy-alert-title, .rst-content .seealso .wy-alert-title, .rst-content .wy-alert-info.admonition-todo .wy-alert-title, .rst-content .wy-alert-info.admonition .wy-alert-title, .wy-alert.wy-alert-info .rst-content .admonition-title, .rst-content .wy-alert.wy-alert-info .admonition-title, .rst-content .note .admonition-title, .rst-content .wy-alert-info.attention .admonition-title, .rst-content .wy-alert-info.caution .admonition-title, .rst-content .wy-alert-info.danger .admonition-title, .rst-content .wy-alert-info.error .admonition-title, .rst-content .wy-alert-info.hint .admonition-title, .rst-content .wy-alert-info.important .admonition-title, .rst-content .wy-alert-info.tip .admonition-title, .rst-content .wy-alert-info.warning .admonition-title, .rst-content .seealso .admonition-title, .rst-content .wy-alert-info.admonition-todo .admonition-title, .rst-content .wy-alert-info.admonition .admonition-title { + background: #277CB4; } +/* error, danger */ +.rst-content .danger .admonition-title, .rst-content .danger .wy-alert-title, .rst-content .error .admonition-title, .rst-content .error .wy-alert-title, .rst-content .wy-alert-danger.admonition-todo .admonition-title, .rst-content .wy-alert-danger.admonition-todo .wy-alert-title, .rst-content .wy-alert-danger.admonition .admonition-title, .rst-content .wy-alert-danger.admonition .wy-alert-title, .rst-content .wy-alert-danger.attention .admonition-title, .rst-content .wy-alert-danger.attention .wy-alert-title, .rst-content .wy-alert-danger.caution .admonition-title, .rst-content .wy-alert-danger.caution .wy-alert-title, .rst-content .wy-alert-danger.hint .admonition-title, .rst-content .wy-alert-danger.hint .wy-alert-title, .rst-content .wy-alert-danger.important .admonition-title, .rst-content .wy-alert-danger.important .wy-alert-title, .rst-content .wy-alert-danger.note .admonition-title, .rst-content .wy-alert-danger.note .wy-alert-title, .rst-content .wy-alert-danger.seealso .admonition-title, .rst-content .wy-alert-danger.seealso .wy-alert-title, .rst-content .wy-alert-danger.tip .admonition-title, .rst-content .wy-alert-danger.tip .wy-alert-title, .rst-content .wy-alert-danger.warning .admonition-title, .rst-content .wy-alert-danger.warning .wy-alert-title, .rst-content .wy-alert.wy-alert-danger .admonition-title, .wy-alert.wy-alert-danger .rst-content .admonition-title, .wy-alert.wy-alert-danger .wy-alert-title { + background: #e31704; +} + +/* Generic admonition titles */ +.wy-alert-title, .rst-content .admonition-title { + background: #277CB4; } diff --git a/branch/main/singlehtml/_static/tabs.css b/branch/main/singlehtml/_static/tabs.css new file mode 100644 index 0000000..957ba60 --- /dev/null +++ b/branch/main/singlehtml/_static/tabs.css @@ -0,0 +1,89 @@ +.sphinx-tabs { + margin-bottom: 1rem; +} + +[role="tablist"] { + border-bottom: 1px solid #a0b3bf; +} + +.sphinx-tabs-tab { + position: relative; + font-family: Lato,'Helvetica Neue',Arial,Helvetica,sans-serif; + color: #1D5C87; + line-height: 24px; + margin: 0; + font-size: 16px; + font-weight: 400; + background-color: rgba(255, 255, 255, 0); + border-radius: 5px 5px 0 0; + border: 0; + padding: 1rem 1.5rem; + margin-bottom: 0; +} + +.sphinx-tabs-tab[aria-selected="true"] { + font-weight: 700; + border: 1px solid #a0b3bf; + border-bottom: 1px solid white; + margin: -1px; + background-color: white; +} + +.sphinx-tabs-tab:focus { + z-index: 1; + outline-offset: 1px; +} + +.sphinx-tabs-panel { + position: relative; + padding: 1rem; + border: 1px solid #a0b3bf; + margin: 0px -1px -1px -1px; + border-radius: 0 0 5px 5px; + border-top: 0; + background: white; +} + +.sphinx-tabs-panel.code-tab { + padding: 0.4rem; +} + +.sphinx-tab img { + margin-bottom: 24 px; +} + +/* Dark theme preference styling */ + +@media (prefers-color-scheme: dark) { + body[data-theme="auto"] .sphinx-tabs-panel { + color: white; + background-color: rgb(50, 50, 50); + } + + body[data-theme="auto"] .sphinx-tabs-tab { + color: white; + background-color: rgba(255, 255, 255, 0.05); + } + + body[data-theme="auto"] .sphinx-tabs-tab[aria-selected="true"] { + border-bottom: 1px solid rgb(50, 50, 50); + background-color: rgb(50, 50, 50); + } +} + +/* Explicit dark theme styling */ + +body[data-theme="dark"] .sphinx-tabs-panel { + color: white; + background-color: rgb(50, 50, 50); +} + +body[data-theme="dark"] .sphinx-tabs-tab { + color: white; + background-color: rgba(255, 255, 255, 0.05); +} + +body[data-theme="dark"] .sphinx-tabs-tab[aria-selected="true"] { + border-bottom: 2px solid rgb(50, 50, 50); + background-color: rgb(50, 50, 50); +} diff --git a/branch/main/singlehtml/_static/tabs.js b/branch/main/singlehtml/_static/tabs.js new file mode 100644 index 0000000..48dc303 --- /dev/null +++ b/branch/main/singlehtml/_static/tabs.js @@ -0,0 +1,145 @@ +try { + var session = window.sessionStorage || {}; +} catch (e) { + var session = {}; +} + +window.addEventListener("DOMContentLoaded", () => { + const allTabs = document.querySelectorAll('.sphinx-tabs-tab'); + const tabLists = document.querySelectorAll('[role="tablist"]'); + + allTabs.forEach(tab => { + tab.addEventListener("click", changeTabs); + }); + + tabLists.forEach(tabList => { + tabList.addEventListener("keydown", keyTabs); + }); + + // Restore group tab selection from session + const lastSelected = session.getItem('sphinx-tabs-last-selected'); + if (lastSelected != null) selectNamedTabs(lastSelected); +}); + +/** + * Key focus left and right between sibling elements using arrows + * @param {Node} e the element in focus when key was pressed + */ +function keyTabs(e) { + const tab = e.target; + let nextTab = null; + if (e.keyCode === 39 || e.keyCode === 37) { + tab.setAttribute("tabindex", -1); + // Move right + if (e.keyCode === 39) { + nextTab = tab.nextElementSibling; + if (nextTab === null) { + nextTab = tab.parentNode.firstElementChild; + } + // Move left + } else if (e.keyCode === 37) { + nextTab = tab.previousElementSibling; + if (nextTab === null) { + nextTab = tab.parentNode.lastElementChild; + } + } + } + + if (nextTab !== null) { + nextTab.setAttribute("tabindex", 0); + nextTab.focus(); + } +} + +/** + * Select or deselect clicked tab. If a group tab + * is selected, also select tab in other tabLists. + * @param {Node} e the element that was clicked + */ +function changeTabs(e) { + // Use this instead of the element that was clicked, in case it's a child + const notSelected = this.getAttribute("aria-selected") === "false"; + const positionBefore = this.parentNode.getBoundingClientRect().top; + const notClosable = !this.parentNode.classList.contains("closeable"); + + deselectTabList(this); + + if (notSelected || notClosable) { + selectTab(this); + const name = this.getAttribute("name"); + selectNamedTabs(name, this.id); + + if (this.classList.contains("group-tab")) { + // Persist during session + session.setItem('sphinx-tabs-last-selected', name); + } + } + + const positionAfter = this.parentNode.getBoundingClientRect().top; + const positionDelta = positionAfter - positionBefore; + // Scroll to offset content resizing + window.scrollTo(0, window.scrollY + positionDelta); +} + +/** + * Select tab and show associated panel. + * @param {Node} tab tab to select + */ +function selectTab(tab) { + tab.setAttribute("aria-selected", true); + + // Show the associated panel + document + .getElementById(tab.getAttribute("aria-controls")) + .removeAttribute("hidden"); +} + +/** + * Hide the panels associated with all tabs within the + * tablist containing this tab. + * @param {Node} tab a tab within the tablist to deselect + */ +function deselectTabList(tab) { + const parent = tab.parentNode; + const grandparent = parent.parentNode; + + Array.from(parent.children) + .forEach(t => t.setAttribute("aria-selected", false)); + + Array.from(grandparent.children) + .slice(1) // Skip tablist + .forEach(panel => panel.setAttribute("hidden", true)); +} + +/** + * Select grouped tabs with the same name, but no the tab + * with the given id. + * @param {Node} name name of grouped tab to be selected + * @param {Node} clickedId id of clicked tab + */ +function selectNamedTabs(name, clickedId=null) { + const groupedTabs = document.querySelectorAll(`.sphinx-tabs-tab[name="${name}"]`); + const tabLists = Array.from(groupedTabs).map(tab => tab.parentNode); + + tabLists + .forEach(tabList => { + // Don't want to change the tabList containing the clicked tab + const clickedTab = tabList.querySelector(`[id="${clickedId}"]`); + if (clickedTab === null ) { + // Select first tab with matching name + const tab = tabList.querySelector(`.sphinx-tabs-tab[name="${name}"]`); + deselectTabList(tab); + selectTab(tab); + } + }) +} + +if (typeof exports === 'undefined') { + exports = {}; +} + +exports.keyTabs = keyTabs; +exports.changeTabs = changeTabs; +exports.selectTab = selectTab; +exports.deselectTabList = deselectTabList; +exports.selectNamedTabs = selectNamedTabs; diff --git a/branch/main/singlehtml/_static/term_role_formatting.css b/branch/main/singlehtml/_static/term_role_formatting.css new file mode 100644 index 0000000..0b66095 --- /dev/null +++ b/branch/main/singlehtml/_static/term_role_formatting.css @@ -0,0 +1,4 @@ +/* Make terms bold */ +a.reference span.std-term { + font-weight: bold; +} diff --git a/branch/main/singlehtml/_static/togglebutton.css b/branch/main/singlehtml/_static/togglebutton.css new file mode 100644 index 0000000..54a6787 --- /dev/null +++ b/branch/main/singlehtml/_static/togglebutton.css @@ -0,0 +1,160 @@ +/** + * Admonition-based toggles + */ + +/* Visibility of the target */ +.admonition.toggle .admonition-title ~ * { + transition: opacity .3s, height .3s; +} + +/* Toggle buttons inside admonitions so we see the title */ +.admonition.toggle { + position: relative; +} + +/* Titles should cut off earlier to avoid overlapping w/ button */ +.admonition.toggle .admonition-title { + padding-right: 25%; + cursor: pointer; +} + +/* Hovering will cause a slight shift in color to make it feel interactive */ +.admonition.toggle .admonition-title:hover { + box-shadow: inset 0 0 0px 20px rgb(0 0 0 / 1%); +} + +/* Hovering will cause a slight shift in color to make it feel interactive */ +.admonition.toggle .admonition-title:active { + box-shadow: inset 0 0 0px 20px rgb(0 0 0 / 3%); +} + +/* Remove extra whitespace below the admonition title when hidden */ +.admonition.toggle-hidden { + padding-bottom: 0; +} + +.admonition.toggle-hidden .admonition-title { + margin-bottom: 0; +} + +/* hides all the content of a page until de-toggled */ +.admonition.toggle-hidden .admonition-title ~ * { + height: 0; + margin: 0; + opacity: 0; + visibility: hidden; +} + +/* General button style and position*/ +button.toggle-button { + /** + * Background and shape. By default there's no background + * but users can style as they wish + */ + background: none; + border: none; + outline: none; + + /* Positioning just inside the admonition title */ + position: absolute; + right: 0.5em; + padding: 0px; + border: none; + outline: none; +} + +/* Display the toggle hint on wide screens */ +@media (min-width: 768px) { + button.toggle-button.toggle-button-hidden:before { + content: attr(data-toggle-hint); /* This will be filled in by JS */ + font-size: .8em; + align-self: center; + } +} + +/* Icon behavior */ +.tb-icon { + transition: transform .2s ease-out; + height: 1.5em; + width: 1.5em; + stroke: currentColor; /* So that we inherit the color of other text */ +} + +/* The icon should point right when closed, down when open. */ +/* Open */ +.admonition.toggle button .tb-icon { + transform: rotate(90deg); +} + +/* Closed */ +.admonition.toggle button.toggle-button-hidden .tb-icon { + transform: rotate(0deg); +} + +/* With details toggles, we don't rotate the icon so it points right */ +details.toggle-details .tb-icon { + height: 1.4em; + width: 1.4em; + margin-top: 0.1em; /* To center the button vertically */ +} + + +/** + * Details-based toggles. + * In this case, we wrap elements with `.toggle` in a details block. + */ + +/* Details blocks */ +details.toggle-details { + margin: 1em 0; +} + + +details.toggle-details summary { + display: flex; + align-items: center; + cursor: pointer; + list-style: none; + border-radius: .2em; + border-left: 3px solid #1976d2; + background-color: rgb(204 204 204 / 10%); + padding: 0.2em 0.7em 0.3em 0.5em; /* Less padding on left because the SVG has left margin */ + font-size: 0.9em; +} + +details.toggle-details summary:hover { + background-color: rgb(204 204 204 / 20%); +} + +details.toggle-details summary:active { + background: rgb(204 204 204 / 28%); +} + +.toggle-details__summary-text { + margin-left: 0.2em; +} + +details.toggle-details[open] summary { + margin-bottom: .5em; +} + +details.toggle-details[open] summary .tb-icon { + transform: rotate(90deg); +} + +details.toggle-details[open] summary ~ * { + animation: toggle-fade-in .3s ease-out; +} + +@keyframes toggle-fade-in { + from {opacity: 0%;} + to {opacity: 100%;} +} + +/* Print rules - we hide all toggle button elements at print */ +@media print { + /* Always hide the summary so the button doesn't show up */ + details.toggle-details summary { + display: none; + } +} \ No newline at end of file diff --git a/branch/main/singlehtml/_static/togglebutton.js b/branch/main/singlehtml/_static/togglebutton.js new file mode 100644 index 0000000..215a7ee --- /dev/null +++ b/branch/main/singlehtml/_static/togglebutton.js @@ -0,0 +1,187 @@ +/** + * Add Toggle Buttons to elements + */ + +let toggleChevron = ` + + + +`; + +var initToggleItems = () => { + var itemsToToggle = document.querySelectorAll(togglebuttonSelector); + console.log(`[togglebutton]: Adding toggle buttons to ${itemsToToggle.length} items`) + // Add the button to each admonition and hook up a callback to toggle visibility + itemsToToggle.forEach((item, index) => { + if (item.classList.contains("admonition")) { + // If it's an admonition block, then we'll add a button inside + // Generate unique IDs for this item + var toggleID = `toggle-${index}`; + var buttonID = `button-${toggleID}`; + + item.setAttribute('id', toggleID); + if (!item.classList.contains("toggle")){ + item.classList.add("toggle"); + } + // This is the button that will be added to each item to trigger the toggle + var collapseButton = ` + `; + + title = item.querySelector(".admonition-title") + title.insertAdjacentHTML("beforeend", collapseButton); + thisButton = document.getElementById(buttonID); + + // Add click handlers for the button + admonition title (if admonition) + admonitionTitle = document.querySelector(`#${toggleID} > .admonition-title`) + if (admonitionTitle) { + // If an admonition, then make the whole title block clickable + admonitionTitle.addEventListener('click', toggleClickHandler); + admonitionTitle.dataset.target = toggleID + admonitionTitle.dataset.button = buttonID + } else { + // If not an admonition then we'll listen for the button click + thisButton.addEventListener('click', toggleClickHandler); + } + + // Now hide the item for this toggle button unless explicitly noted to show + if (!item.classList.contains("toggle-shown")) { + toggleHidden(thisButton); + } + } else { + // If not an admonition, wrap the block in a
block + // Define the structure of the details block and insert it as a sibling + var detailsBlock = ` +
+ + ${toggleChevron} + ${toggleHintShow} + +
`; + item.insertAdjacentHTML("beforebegin", detailsBlock); + + // Now move the toggle-able content inside of the details block + details = item.previousElementSibling + details.appendChild(item) + item.classList.add("toggle-details__container") + + // Set up a click trigger to change the text as needed + details.addEventListener('click', (click) => { + let parent = click.target.parentElement; + if (parent.tagName.toLowerCase() == "details") { + summary = parent.querySelector("summary"); + details = parent; + } else { + summary = parent; + details = parent.parentElement; + } + // Update the inner text for the proper hint + if (details.open) { + summary.querySelector("span.toggle-details__summary-text").innerText = toggleHintShow; + } else { + summary.querySelector("span.toggle-details__summary-text").innerText = toggleHintHide; + } + + }); + + // If we have a toggle-shown class, open details block should be open + if (item.classList.contains("toggle-shown")) { + details.click(); + } + } + }) +}; + +// This should simply add / remove the collapsed class and change the button text +var toggleHidden = (button) => { + target = button.dataset['target'] + var itemToToggle = document.getElementById(target); + if (itemToToggle.classList.contains("toggle-hidden")) { + itemToToggle.classList.remove("toggle-hidden"); + button.classList.remove("toggle-button-hidden"); + } else { + itemToToggle.classList.add("toggle-hidden"); + button.classList.add("toggle-button-hidden"); + } +} + +var toggleClickHandler = (click) => { + // Be cause the admonition title is clickable and extends to the whole admonition + // We only look for a click event on this title to trigger the toggle. + + if (click.target.classList.contains("admonition-title")) { + button = click.target.querySelector(".toggle-button"); + } else if (click.target.classList.contains("tb-icon")) { + // We've clicked the icon and need to search up one parent for the button + button = click.target.parentElement; + } else if (click.target.tagName == "polyline") { + // We've clicked the SVG elements inside the button, need to up 2 layers + button = click.target.parentElement.parentElement; + } else if (click.target.classList.contains("toggle-button")) { + // We've clicked the button itself and so don't need to do anything + button = click.target; + } else { + console.log(`[togglebutton]: Couldn't find button for ${click.target}`) + } + target = document.getElementById(button.dataset['button']); + toggleHidden(target); +} + +// If we want to blanket-add toggle classes to certain cells +var addToggleToSelector = () => { + const selector = ""; + if (selector.length > 0) { + document.querySelectorAll(selector).forEach((item) => { + item.classList.add("toggle"); + }) + } +} + +// Helper function to run when the DOM is finished +const sphinxToggleRunWhenDOMLoaded = cb => { + if (document.readyState != 'loading') { + cb() + } else if (document.addEventListener) { + document.addEventListener('DOMContentLoaded', cb) + } else { + document.attachEvent('onreadystatechange', function() { + if (document.readyState == 'complete') cb() + }) + } +} +sphinxToggleRunWhenDOMLoaded(addToggleToSelector) +sphinxToggleRunWhenDOMLoaded(initToggleItems) + +/** Toggle details blocks to be open when printing */ +if (toggleOpenOnPrint == "true") { + window.addEventListener("beforeprint", () => { + // Open the details + document.querySelectorAll("details.toggle-details").forEach((el) => { + el.dataset["togglestatus"] = el.open; + el.open = true; + }); + + // Open the admonitions + document.querySelectorAll(".admonition.toggle.toggle-hidden").forEach((el) => { + console.log(el); + el.querySelector("button.toggle-button").click(); + el.dataset["toggle_after_print"] = "true"; + }); + }); + window.addEventListener("afterprint", () => { + // Re-close the details that were closed + document.querySelectorAll("details.toggle-details").forEach((el) => { + el.open = el.dataset["togglestatus"] == "true"; + delete el.dataset["togglestatus"]; + }); + + // Re-close the admonition toggle buttons + document.querySelectorAll(".admonition.toggle").forEach((el) => { + if (el.dataset["toggle_after_print"] == "true") { + el.querySelector("button.toggle-button").click(); + delete el.dataset["toggle_after_print"]; + } + }); + }); +} diff --git a/branch/main/singlehtml/index.html b/branch/main/singlehtml/index.html new file mode 100644 index 0000000..52515b5 --- /dev/null +++ b/branch/main/singlehtml/index.html @@ -0,0 +1,1679 @@ + + + + + + + Introduction to CMake documentation + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + +
+ +
+
+
+ +
+
+
+
+ +
+

Introduction to CMake

+

CMake is a language-agnostic, cross-platform build tool and is nowadays the de facto standard, with large projects using it to reliably build, test, and deploy their codebases.

+

CMake is not a build system itself, but it generates another system’s build files.

+

In this workshop, you will learn

+
    +

  • Write a CMake build system for C/C++ and Fortran projects producing libraries and/or executables.

    • +

  • Run tests for your code with CTest.

    • +

  • Ensure your build system will work on different platforms.

    • +

  • (optional) Detect and use external dependencies in your project.

    • +

  • (optional) Safely and effectively build mixed-language projects (Python+C/C++, Python+Fortran, Fortran+C/C++)

    • +
+
+

Prerequisites

+

Before attending this workshop, please make sure that you have access to a computer with a compiler for your favorite programming language and a recent version of CMake.

+

If you have access to a supercomputer (e.g. a NAISS system) with a compute allocation you can use that during the workshop. Any questions on how to use a particular HPC resource should be directed to the appropriate support desk.

+

You can also use your own computer for this workshop, provided that it has the necessary tools installed.

+
    +

  • If you do not already have these installed, we recommend that you set up an isolated software environment using conda.

    • +

  • For Windows computers we recommend to use the Windows Subsystem for Linux (WSL). Detailed instructions can be found on the Setting up your system page.

    • +
+
+
+
+

Setting up your system

+

In order to follow this workshop, you will need access to compilers, Python and CMake. You can use an HPC cluster if you have access to one, but the instructions here cover how to install the prerequisites on your own computer.

+

We also show how you can use Binder to run in the cloud.

+

These instructions are based on installing compilers and CMake via the Conda package and environment manager, as it provides a convenient way to install binary packages in an isolated software environment.

+
+

For Windows users

+

We strongly recommend to use (and install if necessary) the Windows Subsystem for Linux (WSL) as it is a powerful tool which will likely be useful also after the workshop. Inside WSL you will need Python 3 and the conda environment manager. A useful guide to doing this is found at HERE. The installation of the required dependencies in a WSL terminal is documented below.

+
+
+

For MacOS and Linux users

+

MacOS and Linux users can simply open a terminal and install +Miniconda:

+
    +

  • For MacOS see HERE.

    • +

  • For Linux see HERE.

    • +
+
+
+

Creating an environment and installing packages

+

Once you have conda installed (and WSL if you’re using Windows OS) you can use the environment.yml file to install dependencies.

+

First save it to your hard drive by clicking the link, and then in a terminal navigate to where you saved the file and type:

+
conda env create -f environment.yml
+
+
+

You then need to activate the new environment by:

+
conda activate intro-to-cmake
+
+
+

Now you should have CMake, compilers, Python and a few other packages installed!

+
+
+
+
+
+

From sources to executables

+
+

Questions

+
    +

  • How do we use CMake to compile source files to executables?

    • +
+
+
+

Objectives

+
    +

  • Learn what tools are available in the CMake suite.

    • +

  • Learn how to write a simple CMakeLists.txt.

    • +

  • Learn the difference between build systems, build tools, and build system generator.

    • +

  • Learn to distinguish between configuration, generation, and **build* time.

    • +
+
+
+

What is CMake and why should you care?

+

Software is everywhere and so are build systems. Whenever you run a piece of software, anything from calendar apps to computationally-intensive programs, there was a build system involved in transforming the plain-text source code into binary files that could run on the device you are using.

+

CMake is a build-system generator: it provides a family of tools and a domain-specific language (DSL) to describe what the build system should achieve when the appropriate build tools are invoked. The DSL is platform- and compiler-agnostic: you can reuse the same CMake scripts to obtain native build systems on any platform.

+
+_images/build-systems.svg +
+

On GNU/Linux, the native build system will be a collection of Makefile-s. The make build tool uses these Makefile-s to transform sources to executables and libraries.

+
+

CMake abstracts the process of generating the Makefile-s away into a generic DSL.

+
+
+
+

A CMake-based build system:

+
    +

  • can bring your software closer to being platform- and compiler-agnostic.

    • +

  • has good support within many integrated development environments (IDEs).

    • +

  • automatically tracks and propagates internal dependencies in your project.

    • +

  • is built on top of well-maintained functionality for automated dependency detection.

    • +
+
+
+

Hello, CMake!

+ +
+
+

Important issues for the CMakeLists.txt file

+
    +

  1. Any CMake build system will invoke the following commands in its root +CMakeLists.txt:

    + + + + +
    2. +

  2. The case of CMake commands does not matter: the DSL is case-insensitive. However, the plain-text files that CMake parses must be called CMakeLists.txt and the case matters! The variable names are also case sensitive!

    3. +

  3. The command to add executables to the build system is add_executable:

    + +
    4. +

  4. Using CMake you can abstract the generation of the build system and also the invocation of the build tools.

    5. +
+
+

Put your CMakeLists.txt under version control

+

All CMake-related files will evolve together with your codebase. It’s a good idea to put them under version control. On the contrary, any of the generated native build-system files, e.g. Makefile-s, should not be version-controlled.

+
+ +
+
+

A complete toolchain

+

The family of tools provided with CMake offers a complete toolchain to manage the development cycle: from sources to build artifacts, testing, and deployment. +We refer to these stages as CMake times and each tool is appropriate at a specific time. In this workshop, we will discuss:

+
    +

  • CMake time or configure time. This is the stage when cmake is invoked to parse the CMakeLists.txt in your project, configure and generate the build system.

    • +

  • Build time. This is handled by the native build tools, but, as we have seen, these can be effectively wrapped by cmake itself.

    • +

  • CTest time or test time. At this stage, you will test your build artifacts.

    • +
+
+_images/cmake-times.jpg +
+

You can manage all these stages of a software project’s lifetime with tools provided by CMake. This figure shows all these stages (times) and which tool is appropriate for each. This figure is reproduced from CMake Cookbook and is licensed under the terms of the CC-BY-SA.

+
+
+
+
+

Producing libraries

+

CMake can of course be used to produce libraries as well as executables. The relevant command is add_library:

+ +

You can link libraries into executables with target_link_libraries:

+ +
+

Executables and libraries are targets

+

We will encounter the term target repeatedly. In CMake, a target is any object given as first argument to add_executable or add_library. Targets are the basic atom in CMake. Whenever you will need to organize complex projects, think in terms of its targets and their mutual dependencies.

+

The whole family of CMake commands target_* can be used to express chains of dependencies and is much more effective than keeping track of state with variables. We will clarify these concepts in Target-based build systems with CMake.

+
+
+

Exercise 1: Producing libraries

+
+

You can find a scaffold project in the content/code/01_libraries-cxx folder.

+
    +

  1. Write a CMakeLists.txt to compile the source files Message.hpp and Message.cpp into a library. DO NOT specify the type of library, shared or static, explicitly.

    2. +

  2. Add an executable from the hello-world.cpp source file.

    3. +

  3. Link the library into the executable.

    4. +
+

A working solution is in the solution subfolder.

+
+

What kind of library did you get? Static or shared?

+
+
+

Keypoints

+
    +

  • CMake is a build system generator, not a build system.

    • +

  • You write CMakeLists.txt to describe how the build tools will create artifacts from sources.

    • +

  • You can use the CMake suite of tools to manage the whole lifetime: from source files to tests to deployment.

    • +

  • The structure of the project is mirrored in the build folder.

    • +
+
+
+
+
+

CMake syntax

+
+

Questions

+
    +

  • How can we achieve more control over the build system generated by CMake?

    • +

  • Is it possible to let the user decide what to generate?

    • +
+
+
+

Objectives

+
    +

  • Learn how to define variables with set and use them with the ${} +operator for variable references.

    • +

  • Learn the syntax for conditionals in CMake: if - elseif - else - endif

    • +

  • Learn the syntax for loops in CMake: foreach

    • +

  • Learn how CMake structures build artifacts.

    • +

  • Learn how to print helpful messages.

    • +

  • Learn how to handle user-facing options: option and the role of CMake cache.

    • +
+
+

CMake offers a domain-specific language (DSL) to describe how to generate a build system native to the specific platform you might be running on. In this episode, we will get acquainted with its syntax.

+
+

The CMake DSL

+

Remember that the DSL is case-insensitive. We will now have a look at its main elements.

+
+

Variables

+

These are either CMake- or user-defined variables. You can obtain the list of CMake-defined variables with the command:

+
$ cmake --help-variable-list
+
+
+

You can create a new variable with the set command:

+ +

Variables in CMake are always of string type, but certain commands can interpret them as other types. If you want to declare a list variable, you will have to provide it as a ;-separated string. Lists can be manipulated with the list family of commands.

+

You can inspect the value of any variable by dereferencing it with the ${} operator, as in bash shell. For example, the following snippet sets the content of hello variable and then prints it:

+
set(hello "world")
+message("hello ${hello}")
+
+
+

Two notes about variable references:

+
    +

  • if the variable within the ${} operator is not set, you will get an empty string.

    • +

  • you can nest variable references: ${outer_${inner_variable}_variable}. They will be evaluated from the inside out.

    • +
+

One of the most confusing aspects in CMake is the scoping of variables. There are three variable scopes in the DSL:

+
    +

  • Function: In effect when a variable is set within a function, the variable will be visible within the function, but not outside.

    • +

  • Directory: In effect when processing a CMakeLists.txt in a directory, variables in the parent folder will be available, but any that is set in the current folder will not be propagated to the parent.

    • +

  • Cache: These variables are persistent across calls to cmake and available to all scopes in the project. Modifying a cache variable requires using a special form of the set function:

    + +
    • +
+

Here is a list of few CMake-defined variables:

+
    +

  • PROJECT_BINARY_DIR. This is the build folder for the project.

    • +

  • PROJECT_SOURCE_DIR. This is the location of the root CMakeLists.txt in the project.

    • +

  • CMAKE_CURRENT_LIST_DIR. This is the folder for the CMakeLists.txt currently being processed.

    • +
+

Help on a specific built-in variable can be obtained with:

+
$ cmake --help-variable PROJECT_BINARY_DIR
+
+
+
+
+

Commands

+

These are provided by CMake and are essential building blocks of the DSL, as they allow you to manipulate variables. They include control flow constructs and the target_* family of commands.

+

You can find a complete list of available commands with:

+
$ cmake --help-command-list
+
+
+

Functions and macros are built on top of the basic built-in commands and are either CMake- or user-defined. These prove useful to avoid repetition in your CMake scripts.

+

The difference between a function and a macro is their scope:

+
    +

  • Functions have their own scope: variables defined inside a function are not propagated back to the caller.

    • +

  • Macros do not have their own scope: variables from the parent scope can be modified and new variables in the parent scope can be set.

    • +
+

Help on a specific built-in command, function or macro can be obtained with:

+
$ cmake --help-command target_link_libraries
+
+
+
+
+

Modules

+

These are collections of functions and macros and are either CMake- or user-defined. CMake comes with a rich ecosystem of modules and you will probably write a few of your own to encapulate frequently used functions or macros in your CMake scripts.

+

You will have to include the module to use its contents, for example:

+
include(CMakePrintHelpers)
+
+
+

The full list of built-in modules is available with:

+
$ cmake --help-module-list
+
+
+

Help on a specific built-in module can be obtained with:

+
$ cmake --help-module CMakePrintHelpers
+
+
+
+
+
+

Flow control

+

The if and foreach commands are available as flow control constructs in the CMake DSL and you are surely familiar with their use in other programming languages.

+

Since all variables in CMake are strings, the syntax for if and foreach appears in a few different variants.

+ +

The truth value of the conditions in the if and elseif blocks is determined by boolean operators. In the CMake DSL:

+
    +

  • True is any expression evaluating to: 1, ON, TRUE, YES, and +Y.

    • +

  • False is any expression evaluating to: 0, OFF, FALSE, NO, +N, IGNORE, and NOTFOUND.

    • +
+

CMake offers boolean operator for string comparisons, such as STREQUAL for string equality, and for version comparisons, such as VERSION_EQUAL.

+
+

Variable expansions in conditionals

+

The if command expands the contents of variables before evaluating their +truth value. See official documentation for further details.

+
+
+

Exercise 2: Conditionals in CMake

+

Modify the CMakeLists.txt from the previous exercise to build either a static or a shared library depending on the value of the boolean MAKE_SHARED_LIBRARY:

+
    +

  1. Define the MAKE_SHARED_LIBRARY variable.

    2. +

  2. Write a conditional checking the variable. In each branch call add_library appropriately.

    3. +
+
+

You can find a scaffold project in the content/code/02_conditionals-cxx folder. A working solution is in the solution subfolder.

+
+
+

You can perform the same operation on a collection of items with foreach:

+ +

The list of items is either space- or ;-separated. break() and continue() are also available.

+ +
+
+

Printing messages

+

You will most likely have to engage in debugging your CMake scripts at some point. Print-based debugging is the most effective way and the main workhorse for this will be the message command:

+ + +

It should be noted that message can be a bit awkward to work with, especially when you want to print the name and value of a variable. Including the built-in module CMakePrintHelpers will make your life easier when debugging, since it provides the cmake_print_variables function:

+ +
+

Keypoints

+
    +

  • CMake offers a full-fledged DSL which empowers you to write complex CMakeLists.txt.

    • +

  • Variables have scoping rules.

    • +

  • The structure of the project is mirrored in the build folder.

    • +
+
+
+
+
+

Probing compilation, linking, and execution

+
+

Questions

+
    +

  • How can you add custom steps to your build system with CMake?

    • +
+
+
+

Objectives

+
    +

  • Learn how and when to use execute_process

    • +

  • Learn how to use add_custom_command with targets.

    • +

  • Learn how to test compilation, linking, and execution.

    • +
+
+

CMake lets you run arbitrary commands at any stage in the project lifecycle. +This is yet another mechanism for fine-grained customization and we will discuss +some of the options in this episode.

+
+

Running custom commands at configure-time

+

The most straightforward method is to explicitly run one (or more) child +process(es) when invoking the cmake command. This is achieved with the +execute_process command.

+ +

It is important to note that any command invoked through execute_process +will only be run at configure-time, i.e. when running the cmake +command. You should not rely on execute_process to update any artifacts at +build-time.

+
+

Exercise xx: Find a Python module

+

In this exercise, we’ll use execute_process +to check whether the cffi Python module is +installed in your environment. On the command line, you would do:

+
$ python -c "import cffi; print(cffi.__version__)"
+
+
+

Your goal is to replicate the same in CMake. +The scaffold code is in content/code/xx_find_cffi. +You will have to modify the call to execute_process to run the command above.

+

A working example is in the solution subfolder.

+
+

Note the use of find_package(Python REQUIRED) to obtain the python +executable. CMake comes with many modules dedicated to the detection of +dependencies, such as Python. These are conventionally called +Find<dependency>.cmake and you can inspect their documentation with:

+
$ cmake --help-module FindPython | more
+
+
+

We will revisit uses of find_package later on in Finding and using dependencies.

+
+
+

Custom commands for your targets

+

As mentioned, the main problem of execute_process is that it will run a +command at configure-time, when the cmake command is first invoked. +It is thus not a viable alternative if we intend to perform some specific +actions depending on targets or make the result of the custom commands a +dependency for other targets. +Both cases have real-world examples, such as when using automatically generated +code. The CMake command add_custom_command can be used in some of this +instances.

+ +
+

Exercise 18: Before and after build

+

We want to perform some action before and after building a target, in this case a Fortran executable:

+
    +

  • Before building, we want to read the link line, as produced by CMake, and +echo it to standard output. We use the echo-file.py Python script.

    • +

  • After building, we want to check the size of the static allocations in the +binary, by invoking the size command. We use the static-size.py Python script.

    • +
+

The scaffold code is in content/code/xx_pre_post-f.

+
    +

  1. Add CMake commands to build the example executable from the Fortran +sources. Find the text file with the link line under the build folder. +Hint: have a look in CMakeFiles and keep in mind the name you gave to +the target.

    2. +

  2. Call add_custom_command with PRE_LINK to invoke the echo-file.py Python script.

    3. +

  3. Call add_custom_command with POST_BUILD to invoke the static-size.py Python script.

    4. +
+

A working example is in the solution subfolder.

+
+
+
+

Testing compilation, linking, and execution

+

We also want to be able to run checks on our compilers and linkers. Or check whether a certain library can be used correctly before attempting to build our own artifacts. +CMake provides modules and commands for these purposes:

+
    +

  • Check<LANG>CompilerFlag providing the check_<LANG>_compiler_flag +function, to check whether a compiler flag is valid for the compiler in use.

    • +

  • Check<LANG>SourceCompiles providing the check_<LANG>_source_compiles. +Which check whether a given source file compiles with the compiler in use.

    • +

  • Check<LANG>SourceRuns providing the check_<LANG>_source_runs, to make +sure that a given source snippet compiles, links, and runs.

    • +
+

In all cases, <LANG> can be one of CXX, C or Fortran.

+
+

Exercise 19: Check that a compiler accepts a compiler flag

+

Compilers evolve: they add and/or remove flags and sometimes you will face +the need to test whether some flags are available before using them in your +build.

+

The scaffold code is in content/code/xx_check_compiler_flag.

+
    +

  1. Implement a CMakeLists.txt to build an executable from the +asan-example.cpp source file.

    2. +

  2. Check that the address sanitizer flags are available with +check_cxx_compiler_flag. The flags to check are -fsanitize=address +-fno-omit-frame-pointer. Find the command signature with:

    +
    $ cmake --help-module CMakeCXXCompilerFlag
+
    +
    +
    3. +

  3. If the flags do work, add them to the those used to compile the executable +target with target_compile_options.

    4. +
+

A working example is in the solution subfolder.

+
+
+

Exercise 20: Testing runtime capabilities

+

Testing that some features will work properly for your code requires not only +compiling an object files, but also linking an executable and running it +successfully.

+

The scaffold code is in content/code/xx_check_source_runs.

+
    +

  1. Create an executable target from the source file use-uuid.cpp.

    2. +

  2. Add a check that linking against the library produces working executables. +Use the following C code as test:

    +
    #include <uuid/uuid.h>
+
+int main(int argc, char * argv[]) {
+  uuid_t uuid;
+  uuid_generate(uuid);
+  return 0;
+}
+
    +
    +

    check_c_source_runs requires the test source code to be passed in as +a string. Find the command signature with:

    +
    $ cmake --help-module CheckCSourceRuns
+
    +
    +
    3. +

  3. If the test is successful, link executable target against the UUID +library: use the PkgConfig::UUID target as argument to +target_link_libraries.

    4. +
+

A working example is in the solution subfolder.

+
+
+

Keypoints

+
    +

  • You can customize the build system by executing custom commands.

    • +

  • CMake offers commands to probe compilation, linking, and execution.

    • +
+
+
+
+
+

Finding and using dependencies

+
+

Questions

+
    +

  • How can I use CMake to detect and use the dependencies of my project?

    • +
+
+
+

Objectives

+
    +

  • Learn how to use find_package.

    • +

  • Learn what other detection alternatives exist.

    • +
+
+

The vast majority of software projects do not happen in a vacuum: they will have +dependencies on existing frameworks and libraries. Good documentation will +instruct your users to ensure that these are satisfied in their programming +environment. The build system is the appropriate place to check that these +preconditions are met and that your project can be built correctly. +In this episode, we will show you few examples of how to detect and use +dependencies in your CMake build system.

+
+

Finding dependencies

+

CMake offers a family of commands to find artifacts installed on your system:

+
    +

  • find_file to retrieve the full path to a file.

    • +

  • find_library to find a library, shared or static.

    • +

  • find_package to find and load settings from an external project.

    • +

  • find_path to find the directory containing a file.

    • +

  • find_program to find an executable.

    • +
+

The workhorse of dependency discovery is find_package, which will cover your +needs in almost all use cases.

+ +

We cannot stress this enough: you should only use the other commands in the +find_ family in very special, very narrow circumstances. Why so?

+
    +

  1. For a large selection of common dependencies, the Find<PackageName>.cmake +modules shipped with CMake work flawlessly and are maintained by the CMake +developers. This lifts the burden of programming your own dependency +detection tricks.

    2. +

  2. find_package will set up imported targets: targets defined outside +your project that you can use with your own targets. The properties on +imported targets defines usage requirements for the dependencies. A command +such as:

    +
    target_link_libraries(your-target
+  PUBLIC
+    imported-target
+  )
+
    +
    +

    will set compiler flags, definitions, include directories, and link libraries +from imported-target to your-target and to all other targets in +your project that will use your-target.

    +
    3. +
+

These two points simplify enormously the burden of dependency detection and +consistent usage within a multi-folder project.

+
+

Using find_package

+

When attempting dependency detection with find_package, you should make sure that:

+
    +

  • A Find<PackageName>.cmake module exists,

    • +

  • Which components, if any, it provides, and

    • +

  • What imported targets it will set up.

    • +
+

A complete list of Find<PackageName>.cmake can be found from the command-line interface:

+
$ cmake --help-module-list | grep "Find"
+
+
+ +
+

Exercise 23: Using MPI

+

In this exercise, you will attempt compiling a “Hello, world” program that +uses the message passing interface (MPI).

+
    +

  1. Check whether a FindMPI.cmake module exists in the built-in module +library.

    2. +

  2. Get acquainted with its components and the variables and imported targets +it defines.

    3. +
+
+

The scaffold project is in content/code/xx_mpi-cxx.

+
    +

  1. Compile the source file to an executable.

    2. +

  2. Link against the MPI imported target.

    3. +

  3. Invoke a verbose build and observe how CMake compiles and links.

    4. +
+

A working example is in the solution subfolder.

+
+
+
+
+

Alternatives: Config scripts and pkg-config

+

What to do when there is no built-in Find<PackageName>.cmake module for a package you depend on? +The package developers might be already prepared to help you out:

+
    +

  • They ship the CMake-specific file <PackageName>Config.cmake which +describes how the imported target should be made for their package. +In this case, you need to point CMake to the folder containing the Config file using the +special <PackageName>_DIR variable:

    +
    $ cmake -S. -Bbuild -D<PackageName>_DIR=/folder/containing/<PackageName>Config.cmake
+
    +
    +
    • +

  • They include a .pc file, which, on Unix-like platforms, can be detected +with the pkg-config utility. You can then leverage pkg-config through CMake:

    +
    # find pkg-config
+find_package(PkgConfig REQUIRED)
+# ask pkg-config to find the UUID library and prepare an imported target
+pkg_search_module(UUID REQUIRED uuid IMPORTED_TARGET)
+# use the imported target
+if(TARGET PkgConfig::UUID)
+  message(STATUS "Found libuuid")
+endif()
+
    +
    +

    This was the strategy adopted in Probing compilation, linking, and execution when testing the use of the +UUID library.

    +
    • +
+
+

Keypoints

+
    +

  • CMake has a rich ecosystem of modules for finding software dependencies. They are called Find<package>.cmake.

    • +

  • The Find<package>.cmake modules are used through find_package(<package>).

    • +

  • You can also use the classic Unix tool pkg-config to find software +dependencies, but this is not as robust as the CMake-native +Find<package> modules.

    • +
+
+

Footnotes

+ +
+
+
+
+

Target-based build systems with CMake

+
+

Questions

+
    +

  • How can we handle more complex projects with CMake?

    • +

  • What exactly are targets in the CMake domain-specific language (DSL)?

    • +
+
+
+

Objectives

+
    +

  • Learn that the basic elements in CMake are not variables, but targets.

    • +

  • Learn about properties of targets and how to use them.

    • +

  • Learn how to use visibility levels to express dependencies between targets.

    • +

  • Learn how to work with projects spanning multiple folders.

    • +

  • Learn how to handle multiple targets in one project.

    • +
+
+

Real-world projects require more than compiling a few source files into executables and/or libraries. In most cases, you will come to projects comprising hundreds of source files sprawling in a complex source tree.

+

With the advent of CMake 3.0, also known as Modern CMake, there has been a significant shift that the CMake domain-specific language (DSL) is structured, which can help you keep the complexity of the build system in check. Rather than relying on variables to convey information in a project, all what you need in modern CMake is targets and properties.

+
+

Targets

+

A target is the basic element in the CMake DSL, which can be declared by either add_executable or add_library. Any target has a collection of properties, which define:

+
    +

  • how the build artifact should be produced,

    • +

  • how it should be used by other targets in the project that depend on it.

    • +
+
+_images/target.svg +
+

In CMake, the five most used commands used to handle targets are:

+
    +

  • target_sources, specifying which source files to use when compiling a target.

    • +

  • target_compile_options, specifying which compiler flags to use.

    • +

  • target_compile_definitions, specifying which compiler definitions to use.

    • +

  • target_include_directories, specifying which directories will contain header (for C/C++) and module (for Fortran) files.

    • +

  • target_link_libraries, specifying which libraries to link into the current target.

    • +
+

There are additional commands in the target_* family:

+
$ cmake --help-command-list | grep "^target_"
+
+target_compile_definitions
+target_compile_features
+target_compile_options
+target_include_directories
+target_link_directories
+target_link_libraries
+target_link_options
+target_precompile_headers
+target_sources
+
+
+
+
+

Visibility levels

+

Why it is robust to use targets and properties than using variables? Given a target tgtX, we can invoke one command in the target_* family as follows.

+
target_link_libraries(tgtX
+  PRIVATE tgt1
+  INTERFACE tgt2
+  PUBLIC tgt3
+  )
+
+
+
+_images/target_inheritance.svg +
+

Properties on targets have varied visibility levels, which determine how CMake should propagate them between interdependent targets.

+
+
+
+

Understanding visibility levels

+

Visibility levels PRIVATE, PUBLIC, or INTERFACE are very powerful and herein we will briefly demonstrate their difference.

+

In this demo, we split the source code into 3 libraries and all files are available in the content/code/xx_visibility-levels/ folder.

+
.
+├── CMakeLists.txt
+├── greeting
+│   ├── greeting.cpp
+│   └── greeting.hpp
+├── hello_world
+│   ├── hello_world.cpp
+│   └── hello_world.hpp
+├── main.cpp
+└── world
+        ├── world.cpp
+        └── world.hpp
+
+
+
+

In this source code, the main function links to greeting which links to hello_world which links to world.

+ +

Take a look at the CMakeLists.txt:

+
 1cmake_minimum_required(VERSION 3.14)
+ 2
+ 3project(example LANGUAGES CXX)
+ 4
+ 5
+ 6add_library(world)
+ 7target_sources(world
+ 8  PUBLIC
+ 9    world/world.hpp
+10  PRIVATE
+11    world/world.cpp
+12  )
+13target_include_directories(world
+14  PUBLIC
+15    world
+16  )
+17# target_compile_definitions(world PRIVATE "MY_DEFINITION")
+18
+19
+20add_library(hello_world)
+21target_sources(hello_world
+22  PUBLIC
+23    hello_world/hello_world.hpp
+24  PRIVATE
+25    hello_world/hello_world.cpp
+26  )
+27target_include_directories(hello_world
+28  PUBLIC
+29    hello_world
+30  )
+31
+32# hello_world depends on world
+33target_link_libraries(hello_world PRIVATE world)
+34
+35
+36add_library(greeting)
+37target_sources(greeting
+38  PUBLIC
+39    greeting/greeting.hpp
+40  PRIVATE
+41    greeting/greeting.cpp
+42  )
+43target_include_directories(greeting
+44  PUBLIC
+45    greeting
+46  )
+47
+48# greeting depends on hello_world
+49target_link_libraries(greeting PRIVATE hello_world)
+50
+51
+52add_executable(example main.cpp)
+53
+54# example depends on greeting
+55target_link_libraries(example PRIVATE greeting)
+
+
+
+

Testing the 3 different visibility levels

+
    +

  1. Browse, configure, build, and run the code.

    2. +

  2. Uncomment the highlighted line (line 17) with target_compile_definitions, configure into a fresh folder, and build using the commands below. You will see that the definition is used in world.cpp but nowhere else.

    +
    $ cmake -S. -Bbuild_private
+$ cmake --build build_private
+
    +
    +
    3. +

  3. Change the definition to PUBLIC, configure into a fresh folder, and build. You will see that the definition is used both in world.cpp and hello_world.cpp.

    +
    $ cmake -S. -Bbuild_public
+$ cmake --build build_public
+
    +
    +
    4. +

  4. Then change the definition to INTERFACE, configure into a fresh folder, and build. You will see that the definition is used only in hello_world.cpp but not in world.cpp.

    +
    $ cmake -S. -Bbuild_interface
+$ cmake --build build_interface
+
    +
    +
    5. +
+
+
+
+

Properties

+

CMake lets you set properties at many different levels of visibility across the project:

+
    +

  • Global scope. These are equivalent to variables set in the root CMakeLists.txt. Their use is, however, more powerful as they can be set from any leaf CMakeLists.txt.

    • +

  • Directory scope. These are equivalent to variables set in a given leaf CMakeLists.txt.

    • +

  • Target. These are the properties set on targets that we discussed above.

    • +

  • Test.

    • +

  • Source files. For example, compiler flags.

    • +

  • Cache entries.

    • +

  • Installed files.

    • +
+

For a complete list of properties known to CMake:

+
$ cmake --help-properties | less
+
+
+

You can get the current value of any property with get_property and set the value of any property with set_property.

+
+
+

Multiple folders

+

In the code example about the visibility levels, we have split a project into three folders and libraries but we kept one CMakeLists.txt. As the project grows, this becomes impractical for humans (the CMake computer overlords will not mind) and maintenance becomes easier if we split the CMake configuration into multiple CMakeLists.txt with the help of add_subdirectory. Our goal is to have a CMakeLists.txt as close as possible to the source files.

+
project/
+├── CMakeLists.txt           <--- Root
+├── external
+│   ├── CMakeLists.txt       <--- Leaf at level 1
+└── src
+    ├── CMakeLists.txt       <--- Leaf at level 1
+    ├── evolution
+    │   ├── CMakeLists.txt   <--- Leaf at level 2
+    ├── initial
+    │   ├── CMakeLists.txt   <--- Leaf at level 2
+    ├── io
+    │   ├── CMakeLists.txt   <--- Leaf at level 2
+    └── parser
+        └── CMakeLists.txt   <--- Leaf at level 2
+
+
+

Each folder in a multi-folder project will contain a CMakeLists.txt: a source tree with one root and many leaves.

+
    +

  • The root CMakeLists.txt will contain the invocation of the project command: variables and targets declared in the root have effectively global scope.

    • +

  • The PROJECT_SOURCE_DIR will point to the folder containing the root CMakeLists.txt.

    • +

  • In order to move between the root and a leaf or between leaves, you will use the add_subdirectory command.

    • +
+

Typically, you only need to pass the first argument: the folder within the build tree will be automatically computed by CMake. We can declare targets at any level, not necessarily the root: a target is visible at the level at which it is declared and all higher levels.

+
+

Exercise yy: Cellular automata

+

Let’s work with a project spanning multiple folders. We will implement a relatively simple code to compute and print to screen elementary cellular automata. We separate the sources into src and external to simulate a nested project which reuses an external project.

+

Your goal is to:

+
    +
    • +

    1. Build the main executable at content/code/yy_automata-cxx/ for C++ and content/code/yy_automata-f/ for Fortran.

      2. +
    +
    • +
    • +

    1. Where are the obtained executables located in the build tree? Remember that CMake generates a build tree mirroring the source tree.

      2. +
    +
    • +

  • 3. The executable will accept 3 arguments: the length, number of steps, and +automaton rule. You can run it with:

    +
    $ automata 40 5 30
+
    +
    +

    The output will be:

    +
    length: 40
+number of steps: 5
+rule: 30
+                    *
+                   ***
+                  **  *
+                 ** ****
+                **  *   *
+               ** **** ***
+
    +
    +
    • +
+
+ +
+

Keypoints

+
    +

  • Using targets, you can achieve granular control over how artifacts are built and how their dependencies are handled.

    • +

  • Compiler flags, definitions, source files, include folders, link libraries, and linker options are properties of a target.

    • +

  • Avoid using variables to express dependencies between targets: use visibility levels PRIVATE, INTERFACE, PUBLIC and let CMake figure out the details.

    • +

  • To keep the complexity of the build system at a minimum, each folder in a multi-folder project should have its own CMake script.

    • +
+
+
+
+
+

Tips and tricks using CMake

+
+

Objectives

+
    +

  • Learn what tools exist to structure projects as they grow.

    • +

  • Discuss the value of localizing scope and avoiding side effects.

    • +

  • Recognize more maintainable and less maintainable patterns.

    • +
+
+

As projects grow, code structures get more complicated: more possibilities, more corner cases, more options to users, and more developers who are contributing and may not oversee the entire CMake structure. In this episode we will mention a couple of tools to bring some structure and flow-control into larger projects. [1]

+
+

Listing sources or globbing them

+

In all our examples we have listed all sources when defining targets.

+

In CMake, you can glob patters (e.g. all files that end with *.cpp) without listing them explicitly. This is tempting, but we advice against doing this. The reason is that CMake cannot guarantee correct tracking dependency changes when you add files after you have configured. [2]

+

Listing files explicitly also allows to grep for them in the CMake code to see where a modification is likely needed. This can help colleagues in our projects who are not familiar with CMake to find out where to change things.

+
+
+

Options and flow control

+

You may want to give users the possibility to decide whether they want to enable an option or not.

+
# by default this one will be ON
+option(ENABLE_MPI "Configure for MPI parallelization" ON)
+
+if(ENABLE_MPI)
+  find_package(MPI REQUIRED COMPONENTS Fortran)
+else()
+  message(STATUS "no problem, building without MPI")
+endif()
+
+
+

Now the users can decide:

+
$ cmake -S. -Bbuild -DENABLE_MPI=OFF
+
+
+
+
+

Organizing files into modules

+

Modules are collections of functions and macros and are either CMake- or user-defined. CMake comes with a rich ecosystem of modules and you will probably write a few of your own to encapsulate frequently used functions or macros in your CMake scripts.

+

You can collect related CMake-code into a file called my_lengthy_code.cmake and then include it in another CMake code as shown below. This can help organizing projects that are growing out of hand and separate concerns.

+
include(my_lengthy_code)
+
+
+
+
+

Variables vs. targets

+

In Target-based build systems with CMake we have motivated why targets are preferable over variables.

+

When you portion your project into modules, then variable declaration impose an order and the risk is high that somebody will not know about the implicit order and reorder modules one day and the behavior will change.

+

Try to minimize the use of user-defined variables. They can point to a sub-optimal solution and a better, more state-less, declarative, solution may exist.

+
+
+

Functions and macros

+

Functions and macros are built on top of the basic built-in commands and are either CMake- or user-defined. These prove useful to avoid repetition in your CMake scripts. The difference between a function and a macro is their scope:

+
    +

  1. Functions have their own scope: variables defined inside a function are not propagated back to the caller.

    2. +

  2. Macros do not have their own scope: variables from the parent scope can be modified and new variables in the parent scope can be set.

    3. +
+

Prefer functions over macros to minimize side-effects.

+
+
+

Where to list sources and tests?

+

Some projects collect all sources in one file, all tests in another file, and carry them across in variables:

+
project/
+├── CMakeLists.txt
+├── cmake
+|   ├── sources.cmake
+|   ├── tests.cmake
+|   └── definitions.cmake
+├── external
+└── src
+    ├── evolution
+    ├── initial
+    ├── io
+    └── parser
+
+
+

It is recommended to organize the sources like the format below, where sources, definitions, and tests are defined in the “closest” CMakeLists.txt files.

+
project/
+├── CMakeLists.txt
+├── external
+│   ├── CMakeLists.txt
+└── src
+    ├── CMakeLists.txt
+    ├── evolution
+    │   ├── CMakeLists.txt
+    ├── initial
+    │   ├── CMakeLists.txt
+    ├── io
+    │   ├── CMakeLists.txt
+    └── parser
+        └── CMakeLists.txt
+
+
+

The reason is that this will minimize side-effects, ordering effects, and simplify maintenance for those who want to add or rename source files: they can do it in one place, close to where they are coding.

+
+
+

Order and side effects

+
    +

  • When portioning your project into modules, design them in a way so that order does not matter (much).

    • +

  • This is easier with functions than with macros, and easier with targets than with variables.

    • +

  • Avoid variables with parent or global scope. Encapsulate and prefer separation of concerns.

    • +
+
+
+

Where to keep generated files

+

CMake allows us to generate files at configure- or build-time. When generating files, we recommend to always generate into the build folder, never outside.

+

The reason is that you always want to maintain the possibility to configure different builds with the same source without having to copy the entire project to a different place.

+

Footnotes

+ +
+
+
+
+
+ + + + + + + + + + + + + + + + + + + + + + + + +

20 min

From sources to executables

30 min

CMake syntax

30 min

Probing compilation, linking, and execution

20 min

Finding and using dependencies

40 min

Target-based build systems with CMake

10 min

Tips and tricks using CMake

10 min

<no title>

+
+
+

Quick Reference

+
+
+

Instructor’s guide

+
+

Why we teach this lesson

+
+
+

Intended learning outcomes

+
+
+

Timing

+
+
+

Preparing exercises

+

e.g. what to do the day before to set up common repositories.

+
+
+

Other practical aspects

+
+
+

Interesting questions you might get

+
+
+

Typical pitfalls

+
+
+
+
+

Who is the course for?

+

This course is for students, researchers, engineers, and programmers that have heard of CMake and want to learn how to use it effectively with projects they are working on. +This course assumes no previous experience with CMake. You will have to be familiar with the tools commonly used to build software in your compiled language of choice (C/C++ or Fortran).

+

Specifically, this lesson assumes that participants have some prior experience with or knowledge of the following topics (but no expertise is required):

+
    +

  • Compiling and linking executables and libraries.

    • +

  • Differences between shared and static libraries.

    • +

  • Automated testing.

    • +
+
+
+

About this course

+

This lesson material is originally developed by the EuroCC National Competence Center Sweden (ENCCS) and taught in the CMake Workshop. +Each lesson episode has clearly defined learning objectives and includes multiple exercises along with solutions, and is therefore also useful for self-learning.

+

This material Introduction to CMake was adapted from the material used for CMake Workshop and will be use for the Build Systems Course and Hackathon.

+

The lesson material is licensed under CC-BY-4.0 and can be reused in any form (with appropriate credit) in other courses and workshops. Instructors who wish to teach this lesson can refer to the Instructor’s guide for practical advice.

+
+
+

Outreach

+

There are many free online resources regarding CMake:

+ +

You can also consult the following books:

+
    +

  • Professional CMake: A Practical Guide by Craig Scott.

    • +

  • CMake Cookbook by Radovan Bast and Roberto Di Remigio. The accompanying repository is on GitHub

    • +
+
+
+

Credits

+

The lesson file structure and browsing layout is inspired by and derived from the work by CodeRefinery licensed under the MIT license. We have copied and adapted most of their license text.

+
+

Instructional Material

+

All ENCCS instructional material is made available under the Creative Commons Attribution license (CC-BY-4.0). The following is a human-readable summary of (and not a substitute for) the full legal text of the CC-BY-4.0 license. You are free:

+
    +

  • to share - copy and redistribute the material in any medium or format;

    • +

  • to adapt - remix, transform, and build upon the material for any purpose, even commercially.

    • +
+

The licensor cannot revoke these freedoms as long as you follow these license terms:

+
    +

  • Attribution - You must give appropriate credit (mentioning that your work is derived from work that is Copyright (c) ENCCS and, where practical, linking to https://enccs.se), provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.

    • +

  • No additional restrictions - You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits. With the understanding that:

    +
    +
      +

    • You do not have to comply with the license for elements of the material in the public domain or where your use is permitted by an applicable exception or limitation.

      • +

    • No warranties are given. The license may not give you all of the permissions necessary for your intended use. For example, other rights such as publicity, privacy, or moral rights may limit how you use the material.

      • +
    +
    +
    • +
+
+
+

Software

+

The code samples and exercises in this lesson were adapted from the GitHub repository for the CMake Cookbook.

+

Except where otherwise noted, the example programs and other software provided by ENCCS are made available under the OSI-approved MIT license.

+
+
+
+ + +
+
+
+ +
+ +
+

© Copyright 2024, EuroCC National Competence Centre Sweden.

+
+ + Built with Sphinx using a + theme + provided by Read the Docs. + + +
+
+
+
+
+ + + + \ No newline at end of file diff --git a/branch/main/singlehtml/objects.inv b/branch/main/singlehtml/objects.inv new file mode 100644 index 0000000..a1cbc8d --- /dev/null +++ b/branch/main/singlehtml/objects.inv @@ -0,0 +1,7 @@ +# Sphinx inventory version 2 +# Project: Introduction to CMake +# Version: +# The remainder of this file is compressed using zlib. +xڕTN0)FG\WC%= mc^8ɮdDjmx' !^|:,y CWH>W?oـlZYݮأ ꫌q Ha ,s :NmkK]V`4%E +"FUܡr2&byQ $kDO +)I;`oQNqEck#1c-b"ɇUuQ́[&`q~|W<ө|+Ky9n@nW SE蛆rkWFD' r+p7Uvzs|/KC_~&(iu$*AxZFP<CRK0pg"(p[$==robsL \ No newline at end of file diff --git a/branch/main/targets/index.html b/branch/main/targets/index.html new file mode 100644 index 0000000..c1bbbf8 --- /dev/null +++ b/branch/main/targets/index.html @@ -0,0 +1,439 @@ + + + + + + + Target-based build systems with CMake — Introduction to CMake documentation + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + +
+ +
+
+
+ +
+
+
+
+ +
+

Target-based build systems with CMake

+
+

Questions

+
    +

  • How can we handle more complex projects with CMake?

    • +

  • What exactly are targets in the CMake domain-specific language (DSL)?

    • +
+
+
+

Objectives

+
    +

  • Learn that the basic elements in CMake are not variables, but targets.

    • +

  • Learn about properties of targets and how to use them.

    • +

  • Learn how to use visibility levels to express dependencies between targets.

    • +

  • Learn how to work with projects spanning multiple folders.

    • +

  • Learn how to handle multiple targets in one project.

    • +
+
+

Real-world projects require more than compiling a few source files into executables and/or libraries. In most cases, you will come to projects comprising hundreds of source files sprawling in a complex source tree.

+

With the advent of CMake 3.0, also known as Modern CMake, there has been a significant shift that the CMake domain-specific language (DSL) is structured, which can help you keep the complexity of the build system in check. Rather than relying on variables to convey information in a project, all what you need in modern CMake is targets and properties.

+
+

Targets

+

A target is the basic element in the CMake DSL, which can be declared by either add_executable or add_library. Any target has a collection of properties, which define:

+
    +

  • how the build artifact should be produced,

    • +

  • how it should be used by other targets in the project that depend on it.

    • +
+
+../_images/target.svg +
+

In CMake, the five most used commands used to handle targets are:

+
    +

  • target_sources, specifying which source files to use when compiling a target.

    • +

  • target_compile_options, specifying which compiler flags to use.

    • +

  • target_compile_definitions, specifying which compiler definitions to use.

    • +

  • target_include_directories, specifying which directories will contain header (for C/C++) and module (for Fortran) files.

    • +

  • target_link_libraries, specifying which libraries to link into the current target.

    • +
+

There are additional commands in the target_* family:

+
$ cmake --help-command-list | grep "^target_"
+
+target_compile_definitions
+target_compile_features
+target_compile_options
+target_include_directories
+target_link_directories
+target_link_libraries
+target_link_options
+target_precompile_headers
+target_sources
+
+
+
+
+

Visibility levels

+

Why it is robust to use targets and properties than using variables? Given a target tgtX, we can invoke one command in the target_* family as follows.

+
target_link_libraries(tgtX
+  PRIVATE tgt1
+  INTERFACE tgt2
+  PUBLIC tgt3
+  )
+
+
+
+../_images/target_inheritance.svg +
+

Properties on targets have varied visibility levels, which determine how CMake should propagate them between interdependent targets.

+
+
+
+

Understanding visibility levels

+

Visibility levels PRIVATE, PUBLIC, or INTERFACE are very powerful and herein we will briefly demonstrate their difference.

+

In this demo, we split the source code into 3 libraries and all files are available in the content/code/xx_visibility-levels/ folder.

+
.
+├── CMakeLists.txt
+├── greeting
+│   ├── greeting.cpp
+│   └── greeting.hpp
+├── hello_world
+│   ├── hello_world.cpp
+│   └── hello_world.hpp
+├── main.cpp
+└── world
+        ├── world.cpp
+        └── world.hpp
+
+
+
+

In this source code, the main function links to greeting which links to hello_world which links to world.

+ +

Take a look at the CMakeLists.txt:

+
 1cmake_minimum_required(VERSION 3.14)
+ 2
+ 3project(example LANGUAGES CXX)
+ 4
+ 5
+ 6add_library(world)
+ 7target_sources(world
+ 8  PUBLIC
+ 9    world/world.hpp
+10  PRIVATE
+11    world/world.cpp
+12  )
+13target_include_directories(world
+14  PUBLIC
+15    world
+16  )
+17# target_compile_definitions(world PRIVATE "MY_DEFINITION")
+18
+19
+20add_library(hello_world)
+21target_sources(hello_world
+22  PUBLIC
+23    hello_world/hello_world.hpp
+24  PRIVATE
+25    hello_world/hello_world.cpp
+26  )
+27target_include_directories(hello_world
+28  PUBLIC
+29    hello_world
+30  )
+31
+32# hello_world depends on world
+33target_link_libraries(hello_world PRIVATE world)
+34
+35
+36add_library(greeting)
+37target_sources(greeting
+38  PUBLIC
+39    greeting/greeting.hpp
+40  PRIVATE
+41    greeting/greeting.cpp
+42  )
+43target_include_directories(greeting
+44  PUBLIC
+45    greeting
+46  )
+47
+48# greeting depends on hello_world
+49target_link_libraries(greeting PRIVATE hello_world)
+50
+51
+52add_executable(example main.cpp)
+53
+54# example depends on greeting
+55target_link_libraries(example PRIVATE greeting)
+
+
+
+

Testing the 3 different visibility levels

+
    +

  1. Browse, configure, build, and run the code.

    2. +

  2. Uncomment the highlighted line (line 17) with target_compile_definitions, configure into a fresh folder, and build using the commands below. You will see that the definition is used in world.cpp but nowhere else.

    +
    $ cmake -S. -Bbuild_private
+$ cmake --build build_private
+
    +
    +
    3. +

  3. Change the definition to PUBLIC, configure into a fresh folder, and build. You will see that the definition is used both in world.cpp and hello_world.cpp.

    +
    $ cmake -S. -Bbuild_public
+$ cmake --build build_public
+
    +
    +
    4. +

  4. Then change the definition to INTERFACE, configure into a fresh folder, and build. You will see that the definition is used only in hello_world.cpp but not in world.cpp.

    +
    $ cmake -S. -Bbuild_interface
+$ cmake --build build_interface
+
    +
    +
    5. +
+
+
+
+

Properties

+

CMake lets you set properties at many different levels of visibility across the project:

+
    +

  • Global scope. These are equivalent to variables set in the root CMakeLists.txt. Their use is, however, more powerful as they can be set from any leaf CMakeLists.txt.

    • +

  • Directory scope. These are equivalent to variables set in a given leaf CMakeLists.txt.

    • +

  • Target. These are the properties set on targets that we discussed above.

    • +

  • Test.

    • +

  • Source files. For example, compiler flags.

    • +

  • Cache entries.

    • +

  • Installed files.

    • +
+

For a complete list of properties known to CMake:

+
$ cmake --help-properties | less
+
+
+

You can get the current value of any property with get_property and set the value of any property with set_property.

+
+
+

Multiple folders

+

In the code example about the visibility levels, we have split a project into three folders and libraries but we kept one CMakeLists.txt. As the project grows, this becomes impractical for humans (the CMake computer overlords will not mind) and maintenance becomes easier if we split the CMake configuration into multiple CMakeLists.txt with the help of add_subdirectory. Our goal is to have a CMakeLists.txt as close as possible to the source files.

+
project/
+├── CMakeLists.txt           <--- Root
+├── external
+│   ├── CMakeLists.txt       <--- Leaf at level 1
+└── src
+    ├── CMakeLists.txt       <--- Leaf at level 1
+    ├── evolution
+    │   ├── CMakeLists.txt   <--- Leaf at level 2
+    ├── initial
+    │   ├── CMakeLists.txt   <--- Leaf at level 2
+    ├── io
+    │   ├── CMakeLists.txt   <--- Leaf at level 2
+    └── parser
+        └── CMakeLists.txt   <--- Leaf at level 2
+
+
+

Each folder in a multi-folder project will contain a CMakeLists.txt: a source tree with one root and many leaves.

+
    +

  • The root CMakeLists.txt will contain the invocation of the project command: variables and targets declared in the root have effectively global scope.

    • +

  • The PROJECT_SOURCE_DIR will point to the folder containing the root CMakeLists.txt.

    • +

  • In order to move between the root and a leaf or between leaves, you will use the add_subdirectory command.

    • +
+

Typically, you only need to pass the first argument: the folder within the build tree will be automatically computed by CMake. We can declare targets at any level, not necessarily the root: a target is visible at the level at which it is declared and all higher levels.

+
+

Exercise yy: Cellular automata

+

Let’s work with a project spanning multiple folders. We will implement a relatively simple code to compute and print to screen elementary cellular automata. We separate the sources into src and external to simulate a nested project which reuses an external project.

+

Your goal is to:

+
    +
    • +

    1. Build the main executable at content/code/yy_automata-cxx/ for C++ and content/code/yy_automata-f/ for Fortran.

      2. +
    +
    • +
    • +

    1. Where are the obtained executables located in the build tree? Remember that CMake generates a build tree mirroring the source tree.

      2. +
    +
    • +

  • 3. The executable will accept 3 arguments: the length, number of steps, and +automaton rule. You can run it with:

    +
    $ automata 40 5 30
+
    +
    +

    The output will be:

    +
    length: 40
+number of steps: 5
+rule: 30
+                    *
+                   ***
+                  **  *
+                 ** ****
+                **  *   *
+               ** **** ***
+
    +
    +
    • +
+
+ +
+

Keypoints

+
    +

  • Using targets, you can achieve granular control over how artifacts are built and how their dependencies are handled.

    • +

  • Compiler flags, definitions, source files, include folders, link libraries, and linker options are properties of a target.

    • +

  • Avoid using variables to express dependencies between targets: use visibility levels PRIVATE, INTERFACE, PUBLIC and let CMake figure out the details.

    • +

  • To keep the complexity of the build system at a minimum, each folder in a multi-folder project should have its own CMake script.

    • +
+
+
+
+ + +
+
+ +
+
+
+
+ + + + \ No newline at end of file diff --git a/branch/main/tips-and-tricks/index.html b/branch/main/tips-and-tricks/index.html new file mode 100644 index 0000000..ccda424 --- /dev/null +++ b/branch/main/tips-and-tricks/index.html @@ -0,0 +1,269 @@ + + + + + + + Tips and tricks using CMake — Introduction to CMake documentation + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + +
+ +
+
+
+ +
+
+
+
+ +
+

Tips and tricks using CMake

+
+

Objectives

+
    +

  • Learn what tools exist to structure projects as they grow.

    • +

  • Discuss the value of localizing scope and avoiding side effects.

    • +

  • Recognize more maintainable and less maintainable patterns.

    • +
+
+

As projects grow, code structures get more complicated: more possibilities, more corner cases, more options to users, and more developers who are contributing and may not oversee the entire CMake structure. In this episode we will mention a couple of tools to bring some structure and flow-control into larger projects. [1]

+
+

Listing sources or globbing them

+

In all our examples we have listed all sources when defining targets.

+

In CMake, you can glob patters (e.g. all files that end with *.cpp) without listing them explicitly. This is tempting, but we advice against doing this. The reason is that CMake cannot guarantee correct tracking dependency changes when you add files after you have configured. [2]

+

Listing files explicitly also allows to grep for them in the CMake code to see where a modification is likely needed. This can help colleagues in our projects who are not familiar with CMake to find out where to change things.

+
+
+

Options and flow control

+

You may want to give users the possibility to decide whether they want to enable an option or not.

+
# by default this one will be ON
+option(ENABLE_MPI "Configure for MPI parallelization" ON)
+
+if(ENABLE_MPI)
+  find_package(MPI REQUIRED COMPONENTS Fortran)
+else()
+  message(STATUS "no problem, building without MPI")
+endif()
+
+
+

Now the users can decide:

+
$ cmake -S. -Bbuild -DENABLE_MPI=OFF
+
+
+
+
+

Organizing files into modules

+

Modules are collections of functions and macros and are either CMake- or user-defined. CMake comes with a rich ecosystem of modules and you will probably write a few of your own to encapsulate frequently used functions or macros in your CMake scripts.

+

You can collect related CMake-code into a file called my_lengthy_code.cmake and then include it in another CMake code as shown below. This can help organizing projects that are growing out of hand and separate concerns.

+
include(my_lengthy_code)
+
+
+
+
+

Variables vs. targets

+

In Target-based build systems with CMake we have motivated why targets are preferable over variables.

+

When you portion your project into modules, then variable declaration impose an order and the risk is high that somebody will not know about the implicit order and reorder modules one day and the behavior will change.

+

Try to minimize the use of user-defined variables. They can point to a sub-optimal solution and a better, more state-less, declarative, solution may exist.

+
+
+

Functions and macros

+

Functions and macros are built on top of the basic built-in commands and are either CMake- or user-defined. These prove useful to avoid repetition in your CMake scripts. The difference between a function and a macro is their scope:

+
    +

  1. Functions have their own scope: variables defined inside a function are not propagated back to the caller.

    2. +

  2. Macros do not have their own scope: variables from the parent scope can be modified and new variables in the parent scope can be set.

    3. +
+

Prefer functions over macros to minimize side-effects.

+
+
+

Where to list sources and tests?

+

Some projects collect all sources in one file, all tests in another file, and carry them across in variables:

+
project/
+├── CMakeLists.txt
+├── cmake
+|   ├── sources.cmake
+|   ├── tests.cmake
+|   └── definitions.cmake
+├── external
+└── src
+    ├── evolution
+    ├── initial
+    ├── io
+    └── parser
+
+
+

It is recommended to organize the sources like the format below, where sources, definitions, and tests are defined in the “closest” CMakeLists.txt files.

+
project/
+├── CMakeLists.txt
+├── external
+│   ├── CMakeLists.txt
+└── src
+    ├── CMakeLists.txt
+    ├── evolution
+    │   ├── CMakeLists.txt
+    ├── initial
+    │   ├── CMakeLists.txt
+    ├── io
+    │   ├── CMakeLists.txt
+    └── parser
+        └── CMakeLists.txt
+
+
+

The reason is that this will minimize side-effects, ordering effects, and simplify maintenance for those who want to add or rename source files: they can do it in one place, close to where they are coding.

+
+
+

Order and side effects

+
    +

  • When portioning your project into modules, design them in a way so that order does not matter (much).

    • +

  • This is easier with functions than with macros, and easier with targets than with variables.

    • +

  • Avoid variables with parent or global scope. Encapsulate and prefer separation of concerns.

    • +
+
+
+

Where to keep generated files

+

CMake allows us to generate files at configure- or build-time. When generating files, we recommend to always generate into the build folder, never outside.

+

The reason is that you always want to maintain the possibility to configure different builds with the same source without having to copy the entire project to a different place.

+

Footnotes

+ +
+
+ + +
+
+ +
+
+
+
+ + + + \ No newline at end of file diff --git a/cmake-syntax/index.html b/cmake-syntax/index.html new file mode 100644 index 0000000..96426ab --- /dev/null +++ b/cmake-syntax/index.html @@ -0,0 +1,396 @@ + + + + + + + CMake syntax — Introduction to CMake documentation + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + +
+ +
+
+
+ +
+
+
+
+ +
+

CMake syntax

+
+

Questions

+
    +

  • How can we achieve more control over the build system generated by CMake?

    • +

  • Is it possible to let the user decide what to generate?

    • +
+
+
+

Objectives

+
    +

  • Learn how to define variables with set and use them with the ${} +operator for variable references.

    • +

  • Learn the syntax for conditionals in CMake: if - elseif - else - endif

    • +

  • Learn the syntax for loops in CMake: foreach

    • +

  • Learn how CMake structures build artifacts.

    • +

  • Learn how to print helpful messages.

    • +

  • Learn how to handle user-facing options: option and the role of CMake cache.

    • +
+
+

CMake offers a domain-specific language (DSL) to describe how to generate a build system native to the specific platform you might be running on. In this episode, we will get acquainted with its syntax.

+
+

The CMake DSL

+

Remember that the DSL is case-insensitive. We will now have a look at its main elements.

+
+

Variables

+

These are either CMake- or user-defined variables. You can obtain the list of CMake-defined variables with the command:

+
$ cmake --help-variable-list
+
+
+

You can create a new variable with the set command:

+ +

Variables in CMake are always of string type, but certain commands can interpret them as other types. If you want to declare a list variable, you will have to provide it as a ;-separated string. Lists can be manipulated with the list family of commands.

+

You can inspect the value of any variable by dereferencing it with the ${} operator, as in bash shell. For example, the following snippet sets the content of hello variable and then prints it:

+
set(hello "world")
+message("hello ${hello}")
+
+
+

Two notes about variable references:

+
    +

  • if the variable within the ${} operator is not set, you will get an empty string.

    • +

  • you can nest variable references: ${outer_${inner_variable}_variable}. They will be evaluated from the inside out.

    • +
+

One of the most confusing aspects in CMake is the scoping of variables. There are three variable scopes in the DSL:

+
    +

  • Function: In effect when a variable is set within a function, the variable will be visible within the function, but not outside.

    • +

  • Directory: In effect when processing a CMakeLists.txt in a directory, variables in the parent folder will be available, but any that is set in the current folder will not be propagated to the parent.

    • +

  • Cache: These variables are persistent across calls to cmake and available to all scopes in the project. Modifying a cache variable requires using a special form of the set function:

    + +
    • +
+

Here is a list of few CMake-defined variables:

+
    +

  • PROJECT_BINARY_DIR. This is the build folder for the project.

    • +

  • PROJECT_SOURCE_DIR. This is the location of the root CMakeLists.txt in the project.

    • +

  • CMAKE_CURRENT_LIST_DIR. This is the folder for the CMakeLists.txt currently being processed.

    • +
+

Help on a specific built-in variable can be obtained with:

+
$ cmake --help-variable PROJECT_BINARY_DIR
+
+
+
+
+

Commands

+

These are provided by CMake and are essential building blocks of the DSL, as they allow you to manipulate variables. They include control flow constructs and the target_* family of commands.

+

You can find a complete list of available commands with:

+
$ cmake --help-command-list
+
+
+

Functions and macros are built on top of the basic built-in commands and are either CMake- or user-defined. These prove useful to avoid repetition in your CMake scripts.

+

The difference between a function and a macro is their scope:

+
    +

  • Functions have their own scope: variables defined inside a function are not propagated back to the caller.

    • +

  • Macros do not have their own scope: variables from the parent scope can be modified and new variables in the parent scope can be set.

    • +
+

Help on a specific built-in command, function or macro can be obtained with:

+
$ cmake --help-command target_link_libraries
+
+
+
+
+

Modules

+

These are collections of functions and macros and are either CMake- or user-defined. CMake comes with a rich ecosystem of modules and you will probably write a few of your own to encapulate frequently used functions or macros in your CMake scripts.

+

You will have to include the module to use its contents, for example:

+
include(CMakePrintHelpers)
+
+
+

The full list of built-in modules is available with:

+
$ cmake --help-module-list
+
+
+

Help on a specific built-in module can be obtained with:

+
$ cmake --help-module CMakePrintHelpers
+
+
+
+
+
+

Flow control

+

The if and foreach commands are available as flow control constructs in the CMake DSL and you are surely familiar with their use in other programming languages.

+

Since all variables in CMake are strings, the syntax for if and foreach appears in a few different variants.

+ +

The truth value of the conditions in the if and elseif blocks is determined by boolean operators. In the CMake DSL:

+
    +

  • True is any expression evaluating to: 1, ON, TRUE, YES, and +Y.

    • +

  • False is any expression evaluating to: 0, OFF, FALSE, NO, +N, IGNORE, and NOTFOUND.

    • +
+

CMake offers boolean operator for string comparisons, such as STREQUAL for string equality, and for version comparisons, such as VERSION_EQUAL.

+
+

Variable expansions in conditionals

+

The if command expands the contents of variables before evaluating their +truth value. See official documentation for further details.

+
+
+

Exercise 2: Conditionals in CMake

+

Modify the CMakeLists.txt from the previous exercise to build either a static or a shared library depending on the value of the boolean MAKE_SHARED_LIBRARY:

+
    +

  1. Define the MAKE_SHARED_LIBRARY variable.

    2. +

  2. Write a conditional checking the variable. In each branch call add_library appropriately.

    3. +
+
+

You can find a scaffold project in the content/code/02_conditionals-cxx folder. A working solution is in the solution subfolder.

+
+
+

You can perform the same operation on a collection of items with foreach:

+ +

The list of items is either space- or ;-separated. break() and continue() are also available.

+ +
+
+

Printing messages

+

You will most likely have to engage in debugging your CMake scripts at some point. Print-based debugging is the most effective way and the main workhorse for this will be the message command:

+ + +

It should be noted that message can be a bit awkward to work with, especially when you want to print the name and value of a variable. Including the built-in module CMakePrintHelpers will make your life easier when debugging, since it provides the cmake_print_variables function:

+ +
+

Keypoints

+
    +

  • CMake offers a full-fledged DSL which empowers you to write complex CMakeLists.txt.

    • +

  • Variables have scoping rules.

    • +

  • The structure of the project is mirrored in the build folder.

    • +
+
+
+
+ + +
+
+ +
+
+
+
+ + + + \ No newline at end of file diff --git a/dependencies/index.html b/dependencies/index.html new file mode 100644 index 0000000..2739e32 --- /dev/null +++ b/dependencies/index.html @@ -0,0 +1,383 @@ + + + + + + + Finding and using dependencies — Introduction to CMake documentation + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + +
+ +
+
+
+ +
+
+
+
+ +
+

Finding and using dependencies

+
+

Questions

+
    +

  • How can I use CMake to detect and use the dependencies of my project?

    • +
+
+
+

Objectives

+
    +

  • Learn how to use find_package.

    • +

  • Learn what other detection alternatives exist.

    • +
+
+

The vast majority of software projects do not happen in a vacuum: they will have +dependencies on existing frameworks and libraries. Good documentation will +instruct your users to ensure that these are satisfied in their programming +environment. The build system is the appropriate place to check that these +preconditions are met and that your project can be built correctly. +In this episode, we will show you few examples of how to detect and use +dependencies in your CMake build system.

+
+

Finding dependencies

+

CMake offers a family of commands to find artifacts installed on your system:

+
    +

  • find_file to retrieve the full path to a file.

    • +

  • find_library to find a library, shared or static.

    • +

  • find_package to find and load settings from an external project.

    • +

  • find_path to find the directory containing a file.

    • +

  • find_program to find an executable.

    • +
+

The workhorse of dependency discovery is find_package, which will cover your +needs in almost all use cases.

+ +

We cannot stress this enough: you should only use the other commands in the +find_ family in very special, very narrow circumstances. Why so?

+
    +

  1. For a large selection of common dependencies, the Find<PackageName>.cmake +modules shipped with CMake work flawlessly and are maintained by the CMake +developers. This lifts the burden of programming your own dependency +detection tricks.

    2. +

  2. find_package will set up imported targets: targets defined outside +your project that you can use with your own targets. The properties on +imported targets defines usage requirements for the dependencies. A command +such as:

    +
    target_link_libraries(your-target
+  PUBLIC
+    imported-target
+  )
+
    +
    +

    will set compiler flags, definitions, include directories, and link libraries +from imported-target to your-target and to all other targets in +your project that will use your-target.

    +
    3. +
+

These two points simplify enormously the burden of dependency detection and +consistent usage within a multi-folder project.

+
+

Using find_package

+

When attempting dependency detection with find_package, you should make sure that:

+
    +

  • A Find<PackageName>.cmake module exists,

    • +

  • Which components, if any, it provides, and

    • +

  • What imported targets it will set up.

    • +
+

A complete list of Find<PackageName>.cmake can be found from the command-line interface:

+
$ cmake --help-module-list | grep "Find"
+
+
+ +
+

Exercise 23: Using MPI

+

In this exercise, you will attempt compiling a “Hello, world” program that +uses the message passing interface (MPI).

+
    +

  1. Check whether a FindMPI.cmake module exists in the built-in module +library.

    2. +

  2. Get acquainted with its components and the variables and imported targets +it defines.

    3. +
+
+

The scaffold project is in content/code/xx_mpi-cxx.

+
    +

  1. Compile the source file to an executable.

    2. +

  2. Link against the MPI imported target.

    3. +

  3. Invoke a verbose build and observe how CMake compiles and links.

    4. +
+

A working example is in the solution subfolder.

+
+
+
+
+

Alternatives: Config scripts and pkg-config

+

What to do when there is no built-in Find<PackageName>.cmake module for a package you depend on? +The package developers might be already prepared to help you out:

+
    +

  • They ship the CMake-specific file <PackageName>Config.cmake which +describes how the imported target should be made for their package. +In this case, you need to point CMake to the folder containing the Config file using the +special <PackageName>_DIR variable:

    +
    $ cmake -S. -Bbuild -D<PackageName>_DIR=/folder/containing/<PackageName>Config.cmake
+
    +
    +
    • +

  • They include a .pc file, which, on Unix-like platforms, can be detected +with the pkg-config utility. You can then leverage pkg-config through CMake:

    +
    # find pkg-config
+find_package(PkgConfig REQUIRED)
+# ask pkg-config to find the UUID library and prepare an imported target
+pkg_search_module(UUID REQUIRED uuid IMPORTED_TARGET)
+# use the imported target
+if(TARGET PkgConfig::UUID)
+  message(STATUS "Found libuuid")
+endif()
+
    +
    +

    This was the strategy adopted in Probing compilation, linking, and execution when testing the use of the +UUID library.

    +
    • +
+
+

Keypoints

+
    +

  • CMake has a rich ecosystem of modules for finding software dependencies. They are called Find<package>.cmake.

    • +

  • The Find<package>.cmake modules are used through find_package(<package>).

    • +

  • You can also use the classic Unix tool pkg-config to find software +dependencies, but this is not as robust as the CMake-native +Find<package> modules.

    • +
+
+

Footnotes

+ +
+
+
+ + +
+
+ +
+
+
+
+ + + + \ No newline at end of file diff --git a/genindex/index.html b/genindex/index.html new file mode 100644 index 0000000..bd56f70 --- /dev/null +++ b/genindex/index.html @@ -0,0 +1,141 @@ + + + + + + Index — Introduction to CMake documentation + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + +
+ +
+
+
+ +
+
+
+
+ + +

Index

+ +
+ +
+ + +
+
+
+ +
+ +
+

© Copyright 2024, EuroCC National Competence Centre Sweden.

+
+ + Built with Sphinx using a + theme + provided by Read the Docs. + + +
+
+
+
+
+ + + + \ No newline at end of file diff --git a/guide/index.html b/guide/index.html new file mode 100644 index 0000000..f289909 --- /dev/null +++ b/guide/index.html @@ -0,0 +1,172 @@ + + + + + + + Instructor’s guide — Introduction to CMake documentation + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + +
+ +
+
+
+ +
+
+
+
+ +
+

Instructor’s guide

+
+

Why we teach this lesson

+
+
+

Intended learning outcomes

+
+
+

Timing

+
+
+

Preparing exercises

+

e.g. what to do the day before to set up common repositories.

+
+
+

Other practical aspects

+
+
+

Interesting questions you might get

+
+
+

Typical pitfalls

+
+
+ + +
+
+ +
+
+
+
+ + + + \ No newline at end of file diff --git a/hello-cmake/index.html b/hello-cmake/index.html new file mode 100644 index 0000000..9cb5f76 --- /dev/null +++ b/hello-cmake/index.html @@ -0,0 +1,432 @@ + + + + + + + From sources to executables — Introduction to CMake documentation + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + +
+ +
+
+
+ +
+
+
+
+ +
+

From sources to executables

+
+

Questions

+
    +

  • How do we use CMake to compile source files to executables?

    • +
+
+
+

Objectives

+
    +

  • Learn what tools are available in the CMake suite.

    • +

  • Learn how to write a simple CMakeLists.txt.

    • +

  • Learn the difference between build systems, build tools, and build system generator.

    • +

  • Learn to distinguish between configuration, generation, and **build* time.

    • +
+
+
+

What is CMake and why should you care?

+

Software is everywhere and so are build systems. Whenever you run a piece of software, anything from calendar apps to computationally-intensive programs, there was a build system involved in transforming the plain-text source code into binary files that could run on the device you are using.

+

CMake is a build-system generator: it provides a family of tools and a domain-specific language (DSL) to describe what the build system should achieve when the appropriate build tools are invoked. The DSL is platform- and compiler-agnostic: you can reuse the same CMake scripts to obtain native build systems on any platform.

+
+../_images/build-systems.svg +
+

On GNU/Linux, the native build system will be a collection of Makefile-s. The make build tool uses these Makefile-s to transform sources to executables and libraries.

+
+

CMake abstracts the process of generating the Makefile-s away into a generic DSL.

+
+
+
+

A CMake-based build system:

+
    +

  • can bring your software closer to being platform- and compiler-agnostic.

    • +

  • has good support within many integrated development environments (IDEs).

    • +

  • automatically tracks and propagates internal dependencies in your project.

    • +

  • is built on top of well-maintained functionality for automated dependency detection.

    • +
+
+
+

Hello, CMake!

+ +
+
+

Important issues for the CMakeLists.txt file

+
    +

  1. Any CMake build system will invoke the following commands in its root +CMakeLists.txt:

    + + + + +
    2. +

  2. The case of CMake commands does not matter: the DSL is case-insensitive. However, the plain-text files that CMake parses must be called CMakeLists.txt and the case matters! The variable names are also case sensitive!

    3. +

  3. The command to add executables to the build system is add_executable:

    + +
    4. +

  4. Using CMake you can abstract the generation of the build system and also the invocation of the build tools.

    5. +
+
+

Put your CMakeLists.txt under version control

+

All CMake-related files will evolve together with your codebase. It’s a good idea to put them under version control. On the contrary, any of the generated native build-system files, e.g. Makefile-s, should not be version-controlled.

+
+ +
+
+

A complete toolchain

+

The family of tools provided with CMake offers a complete toolchain to manage the development cycle: from sources to build artifacts, testing, and deployment. +We refer to these stages as CMake times and each tool is appropriate at a specific time. In this workshop, we will discuss:

+
    +

  • CMake time or configure time. This is the stage when cmake is invoked to parse the CMakeLists.txt in your project, configure and generate the build system.

    • +

  • Build time. This is handled by the native build tools, but, as we have seen, these can be effectively wrapped by cmake itself.

    • +

  • CTest time or test time. At this stage, you will test your build artifacts.

    • +
+
+../_images/cmake-times.jpg +
+

You can manage all these stages of a software project’s lifetime with tools provided by CMake. This figure shows all these stages (times) and which tool is appropriate for each. This figure is reproduced from CMake Cookbook and is licensed under the terms of the CC-BY-SA.

+
+
+
+
+

Producing libraries

+

CMake can of course be used to produce libraries as well as executables. The relevant command is add_library:

+ +

You can link libraries into executables with target_link_libraries:

+ +
+

Executables and libraries are targets

+

We will encounter the term target repeatedly. In CMake, a target is any object given as first argument to add_executable or add_library. Targets are the basic atom in CMake. Whenever you will need to organize complex projects, think in terms of its targets and their mutual dependencies.

+

The whole family of CMake commands target_* can be used to express chains of dependencies and is much more effective than keeping track of state with variables. We will clarify these concepts in Target-based build systems with CMake.

+
+
+

Exercise 1: Producing libraries

+
+

You can find a scaffold project in the content/code/01_libraries-cxx folder.

+
    +

  1. Write a CMakeLists.txt to compile the source files Message.hpp and Message.cpp into a library. DO NOT specify the type of library, shared or static, explicitly.

    2. +

  2. Add an executable from the hello-world.cpp source file.

    3. +

  3. Link the library into the executable.

    4. +
+

A working solution is in the solution subfolder.

+
+

What kind of library did you get? Static or shared?

+
+
+

Keypoints

+
    +

  • CMake is a build system generator, not a build system.

    • +

  • You write CMakeLists.txt to describe how the build tools will create artifacts from sources.

    • +

  • You can use the CMake suite of tools to manage the whole lifetime: from source files to tests to deployment.

    • +

  • The structure of the project is mirrored in the build folder.

    • +
+
+
+
+ + +
+
+ +
+
+
+
+ + + + \ No newline at end of file diff --git a/index.html b/index.html new file mode 100644 index 0000000..24a0a3f --- /dev/null +++ b/index.html @@ -0,0 +1,261 @@ + + + + + + + Introduction to CMake — Introduction to CMake documentation + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + +
+ +
+
+
+ +
+
+
+
+ +
+

Introduction to CMake

+

CMake is a language-agnostic, cross-platform build tool and is nowadays the de facto standard, with large projects using it to reliably build, test, and deploy their codebases.

+

CMake is not a build system itself, but it generates another system’s build files.

+

In this workshop, you will learn

+
    +

  • Write a CMake build system for C/C++ and Fortran projects producing libraries and/or executables.

    • +

  • Run tests for your code with CTest.

    • +

  • Ensure your build system will work on different platforms.

    • +

  • (optional) Detect and use external dependencies in your project.

    • +

  • (optional) Safely and effectively build mixed-language projects (Python+C/C++, Python+Fortran, Fortran+C/C++)

    • +
+
+

Prerequisites

+

Before attending this workshop, please make sure that you have access to a computer with a compiler for your favorite programming language and a recent version of CMake.

+

If you have access to a supercomputer (e.g. a NAISS system) with a compute allocation you can use that during the workshop. Any questions on how to use a particular HPC resource should be directed to the appropriate support desk.

+

You can also use your own computer for this workshop, provided that it has the necessary tools installed.

+
    +

  • If you do not already have these installed, we recommend that you set up an isolated software environment using conda.

    • +

  • For Windows computers we recommend to use the Windows Subsystem for Linux (WSL). Detailed instructions can be found on the Setting up your system page.

    • +
+
+
+
+
+
+
+
+ + + + + + + + + + + + + + + + + + + + + + + + +

20 min

From sources to executables

30 min

CMake syntax

30 min

Probing compilation, linking, and execution

20 min

Finding and using dependencies

40 min

Target-based build systems with CMake

10 min

Tips and tricks using CMake

10 min

<no title>

+
+

Reference

+ +
+
+

Who is the course for?

+

This course is for students, researchers, engineers, and programmers that have heard of CMake and want to learn how to use it effectively with projects they are working on. +This course assumes no previous experience with CMake. You will have to be familiar with the tools commonly used to build software in your compiled language of choice (C/C++ or Fortran).

+

Specifically, this lesson assumes that participants have some prior experience with or knowledge of the following topics (but no expertise is required):

+
    +

  • Compiling and linking executables and libraries.

    • +

  • Differences between shared and static libraries.

    • +

  • Automated testing.

    • +
+
+
+

About this course

+

This lesson material is originally developed by the EuroCC National Competence Center Sweden (ENCCS) and taught in the CMake Workshop. +Each lesson episode has clearly defined learning objectives and includes multiple exercises along with solutions, and is therefore also useful for self-learning.

+

This material Introduction to CMake was adapted from the material used for CMake Workshop and will be use for the Build Systems Course and Hackathon.

+

The lesson material is licensed under CC-BY-4.0 and can be reused in any form (with appropriate credit) in other courses and workshops. Instructors who wish to teach this lesson can refer to the Instructor’s guide for practical advice.

+
+
+

Outreach

+

There are many free online resources regarding CMake:

+ +

You can also consult the following books:

+
    +

  • Professional CMake: A Practical Guide by Craig Scott.

    • +

  • CMake Cookbook by Radovan Bast and Roberto Di Remigio. The accompanying repository is on GitHub

    • +
+
+
+

Credits

+

The lesson file structure and browsing layout is inspired by and derived from the work by CodeRefinery licensed under the MIT license. We have copied and adapted most of their license text.

+
+

Instructional Material

+

All ENCCS instructional material is made available under the Creative Commons Attribution license (CC-BY-4.0). The following is a human-readable summary of (and not a substitute for) the full legal text of the CC-BY-4.0 license. You are free:

+
    +

  • to share - copy and redistribute the material in any medium or format;

    • +

  • to adapt - remix, transform, and build upon the material for any purpose, even commercially.

    • +
+

The licensor cannot revoke these freedoms as long as you follow these license terms:

+
    +

  • Attribution - You must give appropriate credit (mentioning that your work is derived from work that is Copyright (c) ENCCS and, where practical, linking to https://enccs.se), provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.

    • +

  • No additional restrictions - You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits. With the understanding that:

    +
    +
      +

    • You do not have to comply with the license for elements of the material in the public domain or where your use is permitted by an applicable exception or limitation.

      • +

    • No warranties are given. The license may not give you all of the permissions necessary for your intended use. For example, other rights such as publicity, privacy, or moral rights may limit how you use the material.

      • +
    +
    +
    • +
+
+
+

Software

+

The code samples and exercises in this lesson were adapted from the GitHub repository for the CMake Cookbook.

+

Except where otherwise noted, the example programs and other software provided by ENCCS are made available under the OSI-approved MIT license.

+
+
+
+ + +
+
+
+ +
+ +
+

© Copyright 2024, EuroCC National Competence Centre Sweden.

+
+ + Built with Sphinx using a + theme + provided by Read the Docs. + + +
+
+
+
+
+ + + + \ No newline at end of file diff --git a/lesson.pdf b/lesson.pdf new file mode 100644 index 0000000..d8bf3cc Binary files /dev/null and b/lesson.pdf differ diff --git a/objects.inv b/objects.inv new file mode 100644 index 0000000..2ecc050 Binary files /dev/null and b/objects.inv differ diff --git a/probing/index.html b/probing/index.html new file mode 100644 index 0000000..6f7b34d --- /dev/null +++ b/probing/index.html @@ -0,0 +1,341 @@ + + + + + + + Probing compilation, linking, and execution — Introduction to CMake documentation + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + +
+ +
+
+
+ +
+
+
+
+ +
+

Probing compilation, linking, and execution

+
+

Questions

+
    +

  • How can you add custom steps to your build system with CMake?

    • +
+
+
+

Objectives

+
    +

  • Learn how and when to use execute_process

    • +

  • Learn how to use add_custom_command with targets.

    • +

  • Learn how to test compilation, linking, and execution.

    • +
+
+

CMake lets you run arbitrary commands at any stage in the project lifecycle. +This is yet another mechanism for fine-grained customization and we will discuss +some of the options in this episode.

+
+

Running custom commands at configure-time

+

The most straightforward method is to explicitly run one (or more) child +process(es) when invoking the cmake command. This is achieved with the +execute_process command.

+ +

It is important to note that any command invoked through execute_process +will only be run at configure-time, i.e. when running the cmake +command. You should not rely on execute_process to update any artifacts at +build-time.

+
+

Exercise xx: Find a Python module

+

In this exercise, we’ll use execute_process +to check whether the cffi Python module is +installed in your environment. On the command line, you would do:

+
$ python -c "import cffi; print(cffi.__version__)"
+
+
+

Your goal is to replicate the same in CMake. +The scaffold code is in content/code/xx_find_cffi. +You will have to modify the call to execute_process to run the command above.

+

A working example is in the solution subfolder.

+
+

Note the use of find_package(Python REQUIRED) to obtain the python +executable. CMake comes with many modules dedicated to the detection of +dependencies, such as Python. These are conventionally called +Find<dependency>.cmake and you can inspect their documentation with:

+
$ cmake --help-module FindPython | more
+
+
+

We will revisit uses of find_package later on in Finding and using dependencies.

+
+
+

Custom commands for your targets

+

As mentioned, the main problem of execute_process is that it will run a +command at configure-time, when the cmake command is first invoked. +It is thus not a viable alternative if we intend to perform some specific +actions depending on targets or make the result of the custom commands a +dependency for other targets. +Both cases have real-world examples, such as when using automatically generated +code. The CMake command add_custom_command can be used in some of this +instances.

+ +
+

Exercise 18: Before and after build

+

We want to perform some action before and after building a target, in this case a Fortran executable:

+
    +

  • Before building, we want to read the link line, as produced by CMake, and +echo it to standard output. We use the echo-file.py Python script.

    • +

  • After building, we want to check the size of the static allocations in the +binary, by invoking the size command. We use the static-size.py Python script.

    • +
+

The scaffold code is in content/code/xx_pre_post-f.

+
    +

  1. Add CMake commands to build the example executable from the Fortran +sources. Find the text file with the link line under the build folder. +Hint: have a look in CMakeFiles and keep in mind the name you gave to +the target.

    2. +

  2. Call add_custom_command with PRE_LINK to invoke the echo-file.py Python script.

    3. +

  3. Call add_custom_command with POST_BUILD to invoke the static-size.py Python script.

    4. +
+

A working example is in the solution subfolder.

+
+
+
+

Testing compilation, linking, and execution

+

We also want to be able to run checks on our compilers and linkers. Or check whether a certain library can be used correctly before attempting to build our own artifacts. +CMake provides modules and commands for these purposes:

+
    +

  • Check<LANG>CompilerFlag providing the check_<LANG>_compiler_flag +function, to check whether a compiler flag is valid for the compiler in use.

    • +

  • Check<LANG>SourceCompiles providing the check_<LANG>_source_compiles. +Which check whether a given source file compiles with the compiler in use.

    • +

  • Check<LANG>SourceRuns providing the check_<LANG>_source_runs, to make +sure that a given source snippet compiles, links, and runs.

    • +
+

In all cases, <LANG> can be one of CXX, C or Fortran.

+
+

Exercise 19: Check that a compiler accepts a compiler flag

+

Compilers evolve: they add and/or remove flags and sometimes you will face +the need to test whether some flags are available before using them in your +build.

+

The scaffold code is in content/code/xx_check_compiler_flag.

+
    +

  1. Implement a CMakeLists.txt to build an executable from the +asan-example.cpp source file.

    2. +

  2. Check that the address sanitizer flags are available with +check_cxx_compiler_flag. The flags to check are -fsanitize=address +-fno-omit-frame-pointer. Find the command signature with:

    +
    $ cmake --help-module CMakeCXXCompilerFlag
+
    +
    +
    3. +

  3. If the flags do work, add them to the those used to compile the executable +target with target_compile_options.

    4. +
+

A working example is in the solution subfolder.

+
+
+

Exercise 20: Testing runtime capabilities

+

Testing that some features will work properly for your code requires not only +compiling an object files, but also linking an executable and running it +successfully.

+

The scaffold code is in content/code/xx_check_source_runs.

+
    +

  1. Create an executable target from the source file use-uuid.cpp.

    2. +

  2. Add a check that linking against the library produces working executables. +Use the following C code as test:

    +
    #include <uuid/uuid.h>
+
+int main(int argc, char * argv[]) {
+  uuid_t uuid;
+  uuid_generate(uuid);
+  return 0;
+}
+
    +
    +

    check_c_source_runs requires the test source code to be passed in as +a string. Find the command signature with:

    +
    $ cmake --help-module CheckCSourceRuns
+
    +
    +
    3. +

  3. If the test is successful, link executable target against the UUID +library: use the PkgConfig::UUID target as argument to +target_link_libraries.

    4. +
+

A working example is in the solution subfolder.

+
+
+

Keypoints

+
    +

  • You can customize the build system by executing custom commands.

    • +

  • CMake offers commands to probe compilation, linking, and execution.

    • +
+
+
+
+ + +
+
+ +
+
+
+
+ + + + \ No newline at end of file diff --git a/quick-reference/index.html b/quick-reference/index.html new file mode 100644 index 0000000..de85fde --- /dev/null +++ b/quick-reference/index.html @@ -0,0 +1,143 @@ + + + + + + + Quick Reference — Introduction to CMake documentation + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + +
+ +
+
+
+ +
+
+
+
+ +
+

Quick Reference

+
+ + +
+
+ +
+
+
+
+ + + + \ No newline at end of file diff --git a/search/index.html b/search/index.html new file mode 100644 index 0000000..a685c57 --- /dev/null +++ b/search/index.html @@ -0,0 +1,155 @@ + + + + + + Search — Introduction to CMake documentation + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + +
+ +
+
+
+
    +
    • +
  • Search
    • +
  • +
    • +
+
+
+
+
+ + + + +
+ +
+ +
+
+
+ +
+ +
+

© Copyright 2024, EuroCC National Competence Centre Sweden.

+
+ + Built with Sphinx using a + theme + provided by Read the Docs. + + +
+
+
+
+
+ + + + + + + + + \ No newline at end of file diff --git a/searchindex.js b/searchindex.js new file mode 100644 index 0000000..a9e28f9 --- /dev/null +++ b/searchindex.js @@ -0,0 +1 @@ +Search.setIndex({"alltitles": {"A complete toolchain": [[4, "a-complete-toolchain"]], "About this course": [[5, "about-this-course"]], "Alternatives: Config scripts and pkg-config": [[2, "alternatives-config-scripts-and-pkg-config"]], "CMake syntax": [[1, null]], "Commands": [[1, "commands"]], "Compiling \u201cHello, world\u201d with CMake": [[4, "typealong-0"]], "Creating an environment and installing packages": [[8, "creating-an-environment-and-installing-packages"]], "Credits": [[5, "credits"]], "Custom commands for your targets": [[6, "custom-commands-for-your-targets"]], "Executables and libraries are targets": [[4, "callout-1"]], "Exercise 18: Before and after build": [[6, "exercise-1"]], "Exercise 19: Check that a compiler accepts a compiler flag": [[6, "exercise-2"]], "Exercise 1: Producing libraries": [[4, "exercise-0"]], "Exercise 20: Testing runtime capabilities": [[6, "exercise-3"]], "Exercise 23: Using MPI": [[2, "exercise-0"]], "Exercise 2: Conditionals in CMake": [[1, "exercise-0"]], "Exercise xx: Find a Python module": [[6, "exercise-0"]], "Exercise yy: Cellular automata": [[9, "exercise-1"]], "Finding and using dependencies": [[2, null]], "Finding dependencies": [[2, "finding-dependencies"]], "Flow control": [[1, "flow-control"]], "For MacOS and Linux users": [[8, "for-macos-and-linux-users"]], "For Windows users": [[8, "for-windows-users"]], "From sources to executables": [[4, null]], "Functions and macros": [[10, "functions-and-macros"]], "Hello, CMake!": [[4, "id3"]], "Important issues for the CMakeLists.txt file": [[4, "important-issues-for-the-cmakelists-txt-file"]], "Instructional Material": [[5, "instructional-material"]], "Instructor\u2019s guide": [[3, null]], "Intended learning outcomes": [[3, "intended-learning-outcomes"]], "Interesting questions you might get": [[3, "interesting-questions-you-might-get"]], "Introduction to CMake": [[5, null]], "Keypoints": [[1, "keypoints-0"], [2, "keypoints-0"], [4, "keypoints-0"], [6, "keypoints-0"], [9, "keypoints-0"]], "Listing sources or globbing them": [[10, "listing-sources-or-globbing-them"]], "Loops in CMake": [[1, "typealong-0"]], "Modules": [[1, "modules"]], "Multiple folders": [[9, "multiple-folders"]], "Objectives": [[1, "objectives-0"], [2, "objectives-0"], [4, "objectives-0"], [6, "objectives-0"], [9, "objectives-0"], [10, "objectives-0"]], "Options and flow control": [[10, "options-and-flow-control"]], "Order and side effects": [[10, "order-and-side-effects"]], "Organizing files into modules": [[10, "organizing-files-into-modules"]], "Other practical aspects": [[3, "other-practical-aspects"]], "Outreach": [[5, "outreach"]], "Parameters": [[1, "parameters-0"], [4, "parameters-0"], [4, "parameters-1"]], "Preparing exercises": [[3, "preparing-exercises"]], "Prerequisites": [[5, "prerequisites-0"]], "Printing messages": [[1, "printing-messages"]], "Probing compilation, linking, and execution": [[6, null]], "Producing libraries": [[4, "producing-libraries"]], "Properties": [[9, "properties"]], "Put your CMakeLists.txt under version control": [[4, "callout-0"]], "Questions": [[1, "questions-0"], [2, "questions-0"], [4, "questions-0"], [6, "questions-0"], [9, "questions-0"]], "Quick Reference": [[7, null]], "Reference": [[5, null]], "Running custom commands at configure-time": [[6, "running-custom-commands-at-configure-time"]], "Setting up your system": [[8, null]], "Software": [[5, "software"]], "Target-based build systems with CMake": [[9, null]], "Targets": [[9, "id1"]], "Testing compilation, linking, and execution": [[6, "testing-compilation-linking-and-execution"]], "Testing the 3 different visibility levels": [[9, "exercise-0"]], "The CMake DSL": [[1, "the-cmake-dsl"]], "The command-line interface to CMake": [[4, "typealong-1"]], "The internal dependency tree": [[9, "typealong-0"], [9, "typealong-1"]], "Timing": [[3, "timing"]], "Tips and tricks using CMake": [[10, null]], "Typical pitfalls": [[3, "typical-pitfalls"]], "Understanding visibility levels": [[9, "callout-0"]], "Using OpenMP": [[2, "typealong-0"]], "Using find_package": [[2, "using-find-package"]], "Variable expansions in conditionals": [[1, "callout-0"]], "Variables": [[1, "variables"]], "Variables vs. targets": [[10, "variables-vs-targets"]], "Visibility levels": [[9, "visibility-levels"]], "What is CMake and why should you care?": [[4, "what-is-cmake-and-why-should-you-care"]], "Where to keep generated files": [[10, "where-to-keep-generated-files"]], "Where to list sources and tests?": [[10, "where-to-list-sources-and-tests"]], "Who is the course for?": [[5, "who-is-the-course-for"]], "Why we teach this lesson": [[3, "why-we-teach-this-lesson"]], "add_custom_command": [[6, "signature-1"]], "add_executable": [[4, "signature-2"]], "add_library": [[4, "signature-3"]], 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"toolchain": 4, "tree": 9, "trick": 10, "txt": 4, "typic": 3, "under": 4, "understand": 9, "up": 8, "us": [2, 10], "user": 8, "v": 10, "variabl": [1, 10], "version": 4, "visibl": 9, "we": 3, "what": 4, "where": 10, "who": 5, "why": [3, 4], "window": 8, "world": 4, "xx": 6, "you": [3, 4], "your": [4, 6, 8], "yy": 9}}) \ No newline at end of file diff --git a/setup/index.html b/setup/index.html new file mode 100644 index 0000000..8b44b3d --- /dev/null +++ b/setup/index.html @@ -0,0 +1,177 @@ + + + + + + + Setting up your system — Introduction to CMake documentation + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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Setting up your system

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In order to follow this workshop, you will need access to compilers, Python and CMake. You can use an HPC cluster if you have access to one, but the instructions here cover how to install the prerequisites on your own computer.

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We also show how you can use Binder to run in the cloud.

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These instructions are based on installing compilers and CMake via the Conda package and environment manager, as it provides a convenient way to install binary packages in an isolated software environment.

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For Windows users

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We strongly recommend to use (and install if necessary) the Windows Subsystem for Linux (WSL) as it is a powerful tool which will likely be useful also after the workshop. Inside WSL you will need Python 3 and the conda environment manager. A useful guide to doing this is found at HERE. The installation of the required dependencies in a WSL terminal is documented below.

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For MacOS and Linux users

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MacOS and Linux users can simply open a terminal and install +Miniconda:

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  • For MacOS see HERE.

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  • For Linux see HERE.

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Creating an environment and installing packages

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Once you have conda installed (and WSL if you’re using Windows OS) you can use the environment.yml file to install dependencies.

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First save it to your hard drive by clicking the link, and then in a terminal navigate to where you saved the file and type:

+
conda env create -f environment.yml
+
+
+

You then need to activate the new environment by:

+
conda activate intro-to-cmake
+
+
+

Now you should have CMake, compilers, Python and a few other packages installed!

+
+
+ + +
+
+ +
+
+
+
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+ margin-bottom: 0; + margin-left: 1.5em; +} + +.guilabel, .menuselection { + font-family: sans-serif; +} + +.accelerator { + text-decoration: underline; +} + +.classifier { + font-style: oblique; +} + +.classifier:before { + font-style: normal; + margin: 0 0.5em; + content: ":"; + display: inline-block; +} + +abbr, acronym { + border-bottom: dotted 1px; + cursor: help; +} + +.translated { + background-color: rgba(207, 255, 207, 0.2) +} + +.untranslated { + background-color: rgba(255, 207, 207, 0.2) +} + +/* -- code displays --------------------------------------------------------- */ + +pre { + overflow: auto; + overflow-y: hidden; /* fixes display issues on Chrome browsers */ +} + +pre, div[class*="highlight-"] { + clear: both; +} + +span.pre { + -moz-hyphens: none; + -ms-hyphens: none; + -webkit-hyphens: none; + hyphens: none; + white-space: nowrap; +} + +div[class*="highlight-"] { + margin: 1em 0; +} + +td.linenos pre { + border: 0; + background-color: transparent; + color: #aaa; +} + +table.highlighttable { + display: block; +} + +table.highlighttable tbody { + display: block; +} + +table.highlighttable tr { + display: flex; +} + +table.highlighttable td { + margin: 0; + padding: 0; +} + +table.highlighttable td.linenos { + padding-right: 0.5em; +} + +table.highlighttable td.code { + flex: 1; + overflow: hidden; +} + +.highlight .hll { + display: block; +} + +div.highlight pre, +table.highlighttable pre { + margin: 0; +} + +div.code-block-caption + div { + margin-top: 0; +} + +div.code-block-caption { + margin-top: 1em; + padding: 2px 5px; + font-size: small; +} + +div.code-block-caption code { + background-color: transparent; +} + +table.highlighttable td.linenos, +span.linenos, +div.highlight span.gp { /* gp: Generic.Prompt */ + user-select: none; + -webkit-user-select: text; /* Safari fallback only */ + -webkit-user-select: none; /* Chrome/Safari */ + -moz-user-select: none; /* Firefox */ + -ms-user-select: none; /* IE10+ */ +} + +div.code-block-caption span.caption-number { + padding: 0.1em 0.3em; + font-style: italic; +} + +div.code-block-caption span.caption-text { +} + +div.literal-block-wrapper { + margin: 1em 0; +} + +code.xref, a code { + background-color: transparent; + font-weight: bold; +} + +h1 code, h2 code, h3 code, h4 code, h5 code, h6 code { + background-color: transparent; +} + +.viewcode-link { + float: right; +} + +.viewcode-back { + float: right; + font-family: sans-serif; +} + +div.viewcode-block:target { + margin: -1px -10px; + padding: 0 10px; +} + +/* -- math display ---------------------------------------------------------- */ + +img.math { + vertical-align: middle; +} + +div.body div.math p { + text-align: center; +} + +span.eqno { + float: right; +} + +span.eqno a.headerlink { + position: absolute; + z-index: 1; +} + +div.math:hover a.headerlink { + visibility: visible; +} + +/* -- printout stylesheet --------------------------------------------------- */ + +@media print { + div.document, + div.documentwrapper, + div.bodywrapper { + margin: 0 !important; + width: 100%; + } + + div.sphinxsidebar, + div.related, + div.footer, + #top-link { + display: none; + } +} \ No newline at end of file diff --git a/singlehtml/_static/check-solid.svg b/singlehtml/_static/check-solid.svg new file mode 100644 index 0000000..92fad4b --- /dev/null +++ b/singlehtml/_static/check-solid.svg @@ -0,0 +1,4 @@ + + + + diff --git a/singlehtml/_static/clipboard.min.js b/singlehtml/_static/clipboard.min.js new file mode 100644 index 0000000..54b3c46 --- /dev/null +++ b/singlehtml/_static/clipboard.min.js @@ -0,0 +1,7 @@ +/*! + * clipboard.js v2.0.8 + * https://clipboardjs.com/ + * + * Licensed MIT © Zeno Rocha + */ +!function(t,e){"object"==typeof exports&&"object"==typeof module?module.exports=e():"function"==typeof define&&define.amd?define([],e):"object"==typeof exports?exports.ClipboardJS=e():t.ClipboardJS=e()}(this,function(){return n={686:function(t,e,n){"use strict";n.d(e,{default:function(){return o}});var e=n(279),i=n.n(e),e=n(370),u=n.n(e),e=n(817),c=n.n(e);function a(t){try{return document.execCommand(t)}catch(t){return}}var f=function(t){t=c()(t);return a("cut"),t};var l=function(t){var e,n,o,r=1 + + + + diff --git a/singlehtml/_static/copybutton.css b/singlehtml/_static/copybutton.css new file mode 100644 index 0000000..f1916ec --- /dev/null +++ b/singlehtml/_static/copybutton.css @@ -0,0 +1,94 @@ +/* Copy buttons */ +button.copybtn { + position: absolute; + display: flex; + top: .3em; + right: .3em; + width: 1.7em; + height: 1.7em; + opacity: 0; + transition: opacity 0.3s, border .3s, background-color .3s; + user-select: none; + padding: 0; + border: none; + outline: none; + border-radius: 0.4em; + /* The colors that GitHub uses */ + border: #1b1f2426 1px solid; + background-color: #f6f8fa; + color: #57606a; +} + +button.copybtn.success { + border-color: #22863a; + color: #22863a; +} + +button.copybtn svg { + stroke: currentColor; + width: 1.5em; + height: 1.5em; + padding: 0.1em; +} + +div.highlight { + position: relative; +} + +/* Show the copybutton */ +.highlight:hover button.copybtn, button.copybtn.success { + opacity: 1; +} + +.highlight button.copybtn:hover { + background-color: rgb(235, 235, 235); +} + +.highlight button.copybtn:active { + background-color: rgb(187, 187, 187); +} + +/** + * A minimal CSS-only tooltip copied from: + * https://codepen.io/mildrenben/pen/rVBrpK + * + * To use, write HTML like the following: + * + *

Short

+ */ + .o-tooltip--left { + position: relative; + } + + .o-tooltip--left:after { + opacity: 0; + visibility: hidden; + position: absolute; + content: attr(data-tooltip); + padding: .2em; + font-size: .8em; + left: -.2em; + background: grey; + color: white; + white-space: nowrap; + z-index: 2; + border-radius: 2px; + transform: translateX(-102%) translateY(0); + transition: opacity 0.2s cubic-bezier(0.64, 0.09, 0.08, 1), transform 0.2s cubic-bezier(0.64, 0.09, 0.08, 1); +} + +.o-tooltip--left:hover:after { + display: block; + opacity: 1; + visibility: visible; + transform: translateX(-100%) translateY(0); + transition: opacity 0.2s cubic-bezier(0.64, 0.09, 0.08, 1), transform 0.2s cubic-bezier(0.64, 0.09, 0.08, 1); + transition-delay: .5s; +} + +/* By default the copy button shouldn't show up when printing a page */ +@media print { + button.copybtn { + display: none; + } +} diff --git a/singlehtml/_static/copybutton.js b/singlehtml/_static/copybutton.js new file mode 100644 index 0000000..2ea7ff3 --- /dev/null +++ b/singlehtml/_static/copybutton.js @@ -0,0 +1,248 @@ +// Localization support +const messages = { + 'en': { + 'copy': 'Copy', + 'copy_to_clipboard': 'Copy to clipboard', + 'copy_success': 'Copied!', + 'copy_failure': 'Failed to copy', + }, + 'es' : { + 'copy': 'Copiar', + 'copy_to_clipboard': 'Copiar al portapapeles', + 'copy_success': '¡Copiado!', + 'copy_failure': 'Error al copiar', + }, + 'de' : { + 'copy': 'Kopieren', + 'copy_to_clipboard': 'In die Zwischenablage kopieren', + 'copy_success': 'Kopiert!', + 'copy_failure': 'Fehler beim Kopieren', + }, + 'fr' : { + 'copy': 'Copier', + 'copy_to_clipboard': 'Copier dans le presse-papier', + 'copy_success': 'Copié !', + 'copy_failure': 'Échec de la copie', + }, + 'ru': { + 'copy': 'Скопировать', + 'copy_to_clipboard': 'Скопировать в буфер', + 'copy_success': 'Скопировано!', + 'copy_failure': 'Не удалось скопировать', + }, + 'zh-CN': { + 'copy': '复制', + 'copy_to_clipboard': '复制到剪贴板', + 'copy_success': '复制成功!', + 'copy_failure': '复制失败', + }, + 'it' : { + 'copy': 'Copiare', + 'copy_to_clipboard': 'Copiato negli appunti', + 'copy_success': 'Copiato!', + 'copy_failure': 'Errore durante la copia', + } +} + +let locale = 'en' +if( document.documentElement.lang !== undefined + && messages[document.documentElement.lang] !== undefined ) { + locale = document.documentElement.lang +} + +let doc_url_root = DOCUMENTATION_OPTIONS.URL_ROOT; +if (doc_url_root == '#') { + doc_url_root = ''; +} + +/** + * SVG files for our copy buttons + */ +let iconCheck = ` + ${messages[locale]['copy_success']} + + +` + +// If the user specified their own SVG use that, otherwise use the default +let iconCopy = ``; +if (!iconCopy) { + iconCopy = ` + ${messages[locale]['copy_to_clipboard']} + + + +` +} + +/** + * Set up copy/paste for code blocks + */ + +const runWhenDOMLoaded = cb => { + if (document.readyState != 'loading') { + cb() + } else if (document.addEventListener) { + document.addEventListener('DOMContentLoaded', cb) + } else { + document.attachEvent('onreadystatechange', function() { + if (document.readyState == 'complete') cb() + }) + } +} + +const codeCellId = index => `codecell${index}` + +// Clears selected text since ClipboardJS will select the text when copying +const clearSelection = () => { + if (window.getSelection) { + window.getSelection().removeAllRanges() + } else if (document.selection) { + document.selection.empty() + } +} + +// Changes tooltip text for a moment, then changes it back +// We want the timeout of our `success` class to be a bit shorter than the +// tooltip and icon change, so that we can hide the icon before changing back. +var timeoutIcon = 2000; +var timeoutSuccessClass = 1500; + +const temporarilyChangeTooltip = (el, oldText, newText) => { + el.setAttribute('data-tooltip', newText) + el.classList.add('success') + // Remove success a little bit sooner than we change the tooltip + // So that we can use CSS to hide the copybutton first + setTimeout(() => el.classList.remove('success'), timeoutSuccessClass) + setTimeout(() => el.setAttribute('data-tooltip', oldText), timeoutIcon) +} + +// Changes the copy button icon for two seconds, then changes it back +const temporarilyChangeIcon = (el) => { + el.innerHTML = iconCheck; + setTimeout(() => {el.innerHTML = iconCopy}, timeoutIcon) +} + +const addCopyButtonToCodeCells = () => { + // If ClipboardJS hasn't loaded, wait a bit and try again. This + // happens because we load ClipboardJS asynchronously. + if (window.ClipboardJS === undefined) { + setTimeout(addCopyButtonToCodeCells, 250) + return + } + + // Add copybuttons to all of our code cells + const COPYBUTTON_SELECTOR = 'div.highlight pre'; + const codeCells = document.querySelectorAll(COPYBUTTON_SELECTOR) + codeCells.forEach((codeCell, index) => { + const id = codeCellId(index) + codeCell.setAttribute('id', id) + + const clipboardButton = id => + `` + codeCell.insertAdjacentHTML('afterend', clipboardButton(id)) + }) + +function escapeRegExp(string) { + return string.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'); // $& means the whole matched string +} + +/** + * Removes excluded text from a Node. + * + * @param {Node} target Node to filter. + * @param {string} exclude CSS selector of nodes to exclude. + * @returns {DOMString} Text from `target` with text removed. + */ +function filterText(target, exclude) { + const clone = target.cloneNode(true); // clone as to not modify the live DOM + if (exclude) { + // remove excluded nodes + clone.querySelectorAll(exclude).forEach(node => node.remove()); + } + return clone.innerText; +} + +// Callback when a copy button is clicked. Will be passed the node that was clicked +// should then grab the text and replace pieces of text that shouldn't be used in output +function formatCopyText(textContent, copybuttonPromptText, isRegexp = false, onlyCopyPromptLines = true, removePrompts = true, copyEmptyLines = true, lineContinuationChar = "", hereDocDelim = "") { + var regexp; + var match; + + // Do we check for line continuation characters and "HERE-documents"? + var useLineCont = !!lineContinuationChar + var useHereDoc = !!hereDocDelim + + // create regexp to capture prompt and remaining line + if (isRegexp) { + regexp = new RegExp('^(' + copybuttonPromptText + ')(.*)') + } else { + regexp = new RegExp('^(' + escapeRegExp(copybuttonPromptText) + ')(.*)') + } + + const outputLines = []; + var promptFound = false; + var gotLineCont = false; + var gotHereDoc = false; + const lineGotPrompt = []; + for (const line of textContent.split('\n')) { + match = line.match(regexp) + if (match || gotLineCont || gotHereDoc) { + promptFound = regexp.test(line) + lineGotPrompt.push(promptFound) + if (removePrompts && promptFound) { + outputLines.push(match[2]) + } else { + outputLines.push(line) + } + gotLineCont = line.endsWith(lineContinuationChar) & useLineCont + if (line.includes(hereDocDelim) & useHereDoc) + gotHereDoc = !gotHereDoc + } else if (!onlyCopyPromptLines) { + outputLines.push(line) + } else if (copyEmptyLines && line.trim() === '') { + outputLines.push(line) + } + } + + // If no lines with the prompt were found then just use original lines + if (lineGotPrompt.some(v => v === true)) { + textContent = outputLines.join('\n'); + } + + // Remove a trailing newline to avoid auto-running when pasting + if (textContent.endsWith("\n")) { + textContent = textContent.slice(0, -1) + } + return textContent +} + + +var copyTargetText = (trigger) => { + var target = document.querySelector(trigger.attributes['data-clipboard-target'].value); + + // get filtered text + let exclude = '.linenos'; + + let text = filterText(target, exclude); + return formatCopyText(text, '', false, true, true, true, '', '') +} + + // Initialize with a callback so we can modify the text before copy + const clipboard = new ClipboardJS('.copybtn', {text: copyTargetText}) + + // Update UI with error/success messages + clipboard.on('success', event => { + clearSelection() + temporarilyChangeTooltip(event.trigger, messages[locale]['copy'], messages[locale]['copy_success']) + temporarilyChangeIcon(event.trigger) + }) + + clipboard.on('error', event => { + temporarilyChangeTooltip(event.trigger, messages[locale]['copy'], messages[locale]['copy_failure']) + }) +} + +runWhenDOMLoaded(addCopyButtonToCodeCells) \ No newline at end of file diff --git a/singlehtml/_static/copybutton_funcs.js b/singlehtml/_static/copybutton_funcs.js new file mode 100644 index 0000000..dbe1aaa --- /dev/null +++ b/singlehtml/_static/copybutton_funcs.js @@ -0,0 +1,73 @@ +function escapeRegExp(string) { + return string.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'); // $& means the whole matched string +} + +/** + * Removes excluded text from a Node. + * + * @param {Node} target Node to filter. + * @param {string} exclude CSS selector of nodes to exclude. + * @returns {DOMString} Text from `target` with text removed. + */ +export function filterText(target, exclude) { + const clone = target.cloneNode(true); // clone as to not modify the live DOM + if (exclude) { + // remove excluded nodes + clone.querySelectorAll(exclude).forEach(node => node.remove()); + } + return clone.innerText; +} + +// Callback when a copy button is clicked. Will be passed the node that was clicked +// should then grab the text and replace pieces of text that shouldn't be used in output +export function formatCopyText(textContent, copybuttonPromptText, isRegexp = false, onlyCopyPromptLines = true, removePrompts = true, copyEmptyLines = true, lineContinuationChar = "", hereDocDelim = "") { + var regexp; + var match; + + // Do we check for line continuation characters and "HERE-documents"? + var useLineCont = !!lineContinuationChar + var useHereDoc = !!hereDocDelim + + // create regexp to capture prompt and remaining line + if (isRegexp) { + regexp = new RegExp('^(' + copybuttonPromptText + ')(.*)') + } else { + regexp = new RegExp('^(' + escapeRegExp(copybuttonPromptText) + ')(.*)') + } + + const outputLines = []; + var promptFound = false; + var gotLineCont = false; + var gotHereDoc = false; + const lineGotPrompt = []; + for (const line of textContent.split('\n')) { + match = line.match(regexp) + if (match || gotLineCont || gotHereDoc) { + promptFound = regexp.test(line) + lineGotPrompt.push(promptFound) + if (removePrompts && promptFound) { + outputLines.push(match[2]) + } else { + outputLines.push(line) + } + gotLineCont = line.endsWith(lineContinuationChar) & useLineCont + if (line.includes(hereDocDelim) & useHereDoc) + gotHereDoc = !gotHereDoc + } else if (!onlyCopyPromptLines) { + outputLines.push(line) + } else if (copyEmptyLines && line.trim() === '') { + outputLines.push(line) + } + } + + // If no lines with the prompt were found then just use original lines + if (lineGotPrompt.some(v => v === true)) { + textContent = outputLines.join('\n'); + } + + // Remove a trailing newline to avoid auto-running when pasting + if (textContent.endsWith("\n")) { + textContent = textContent.slice(0, -1) + } + return textContent +} diff --git a/singlehtml/_static/css/badge_only.css b/singlehtml/_static/css/badge_only.css new file mode 100644 index 0000000..c718cee --- /dev/null +++ b/singlehtml/_static/css/badge_only.css @@ -0,0 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+ return this; // for chaining... + } +})(jQuery); + +// NO good way to do this!. Copy a hack from here +// https://stackoverflow.com/questions/901115/how-can-i-get-query-string-values-in-javascript +// https://stackoverflow.com/a/2880929 +var urlParams; +(window.onpopstate = function () { + var match, + pl = /\+/g, // Regex for replacing addition symbol with a space + search = /([^&=]+)=?([^&]*)/g, + decode = function (s) { return decodeURIComponent(s.replace(pl, " ")); }, + query = window.location.search.substring(1); + urlParams = {}; + while (match = search.exec(query)) + urlParams[decode(match[1])] = decode(match[2]); +})(); + +// Select heading levels +var maxHeading = urlParams['h'] +if (maxHeading === undefined) maxHeading = 2 +var headingLevels = []; +for (h=2 ; h (sections.length-1) ) { + // if we would scroll past bottom, or above top, do nothing + return; + } + + console.log('xxxxxx'); + var targetSection = sections[targetPos]; + console.log(targetSection, typeof(targetSection)); + + // Return targetSection top and height + var secProperties = section_top_and_height(targetSection); 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+} + +/* Pandas tables. Pulled from the Jupyter / nbsphinx CSS */ +div.cell_output table { + border: none; + border-collapse: collapse; + border-spacing: 0; + color: black; + font-size: 1em; + table-layout: fixed; +} + +div.cell_output thead { + border-bottom: 1px solid black; + vertical-align: bottom; +} + +div.cell_output tr, +div.cell_output th, +div.cell_output td { + text-align: right; + vertical-align: middle; + padding: 0.5em 0.5em; + line-height: normal; + white-space: normal; + max-width: none; + border: none; +} + +div.cell_output th { + font-weight: bold; +} + +div.cell_output tbody tr:nth-child(odd) { + background: #f5f5f5; +} + +div.cell_output tbody tr:hover { + background: rgba(66, 165, 245, 0.2); +} + +/** source code line numbers **/ +span.linenos { + opacity: 0.5; +} + +/* Inline text from `paste` operation */ + +span.pasted-text { + font-weight: bold; +} + +span.pasted-inline img { + max-height: 2em; +} + +tbody span.pasted-inline img { + max-height: none; +} + +/* Font colors for 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background-color: #E75C58 +} + +div.highlight .-Color[class*=-BGGreen] { + background-color: #00A250 +} + +div.highlight .-Color[class*=-BGYellow] { + background-color: #DDB62B +} + +div.highlight .-Color[class*=-BGBlue] { + background-color: #208FFB +} + +div.highlight .-Color[class*=-BGMagenta] { + background-color: #D160C4 +} + +div.highlight .-Color[class*=-BGCyan] { + background-color: #60C6C8 +} + +div.highlight .-Color[class*=-BGWhite] { + background-color: #C5C1B4 +} + +/* Font colors for 8-bit ANSI */ + +div.highlight .-Color[class*=-C0] { + color: #000000 +} + +div.highlight .-Color[class*=-BGC0] { + background-color: #000000 +} + +div.highlight .-Color[class*=-C1] { + color: #800000 +} + +div.highlight .-Color[class*=-BGC1] { + background-color: #800000 +} + +div.highlight .-Color[class*=-C2] { + color: #008000 +} + +div.highlight .-Color[class*=-BGC2] { + background-color: #008000 +} + +div.highlight .-Color[class*=-C3] { + color: #808000 +} + +div.highlight .-Color[class*=-BGC3] { + background-color: #808000 +} + +div.highlight .-Color[class*=-C4] { + color: #000080 +} + +div.highlight .-Color[class*=-BGC4] { + background-color: #000080 +} + +div.highlight .-Color[class*=-C5] { + color: #800080 +} + +div.highlight .-Color[class*=-BGC5] { + background-color: #800080 +} + +div.highlight .-Color[class*=-C6] { + color: #008080 +} + +div.highlight .-Color[class*=-BGC6] { + background-color: #008080 +} + +div.highlight .-Color[class*=-C7] { + color: #C0C0C0 +} + +div.highlight .-Color[class*=-BGC7] { + background-color: #C0C0C0 +} + +div.highlight .-Color[class*=-C8] { + color: #808080 +} + +div.highlight .-Color[class*=-BGC8] { + background-color: #808080 +} + +div.highlight .-Color[class*=-C9] { + color: #FF0000 +} + +div.highlight .-Color[class*=-BGC9] { + background-color: #FF0000 +} + +div.highlight .-Color[class*=-C10] { + color: #00FF00 +} + +div.highlight .-Color[class*=-BGC10] { + background-color: #00FF00 +} + +div.highlight .-Color[class*=-C11] { + color: #FFFF00 +} + +div.highlight .-Color[class*=-BGC11] { + background-color: #FFFF00 +} + +div.highlight .-Color[class*=-C12] { + color: #0000FF +} + +div.highlight .-Color[class*=-BGC12] { + background-color: #0000FF +} + +div.highlight .-Color[class*=-C13] { + color: #FF00FF +} + +div.highlight .-Color[class*=-BGC13] { + background-color: #FF00FF +} + +div.highlight .-Color[class*=-C14] { + color: #00FFFF +} + +div.highlight .-Color[class*=-BGC14] { + background-color: #00FFFF +} + +div.highlight .-Color[class*=-C15] { + color: #FFFFFF +} + +div.highlight .-Color[class*=-BGC15] { + background-color: #FFFFFF +} + +div.highlight .-Color[class*=-C16] { + color: #000000 +} + +div.highlight .-Color[class*=-BGC16] { + background-color: #000000 +} + +div.highlight .-Color[class*=-C17] { + color: #00005F +} + +div.highlight .-Color[class*=-BGC17] { + background-color: #00005F +} + +div.highlight .-Color[class*=-C18] { + color: #000087 +} + +div.highlight .-Color[class*=-BGC18] { + background-color: #000087 +} + +div.highlight .-Color[class*=-C19] { + color: #0000AF +} + +div.highlight .-Color[class*=-BGC19] { + background-color: #0000AF +} + +div.highlight .-Color[class*=-C20] { + color: #0000D7 +} + +div.highlight .-Color[class*=-BGC20] { + background-color: #0000D7 +} + +div.highlight .-Color[class*=-C21] { + color: #0000FF +} + +div.highlight .-Color[class*=-BGC21] { + background-color: #0000FF +} + +div.highlight .-Color[class*=-C22] { + color: #005F00 +} + +div.highlight .-Color[class*=-BGC22] { + background-color: #005F00 +} + +div.highlight .-Color[class*=-C23] { + color: #005F5F +} + +div.highlight .-Color[class*=-BGC23] { + background-color: #005F5F +} + +div.highlight .-Color[class*=-C24] { + color: #005F87 +} + +div.highlight .-Color[class*=-BGC24] { + background-color: #005F87 +} + +div.highlight .-Color[class*=-C25] { + color: #005FAF +} + +div.highlight .-Color[class*=-BGC25] { + background-color: #005FAF +} + +div.highlight .-Color[class*=-C26] { + color: #005FD7 +} + +div.highlight .-Color[class*=-BGC26] { + background-color: #005FD7 +} + +div.highlight .-Color[class*=-C27] { + color: #005FFF +} + +div.highlight .-Color[class*=-BGC27] { + background-color: #005FFF +} + +div.highlight .-Color[class*=-C28] { + color: #008700 +} + +div.highlight .-Color[class*=-BGC28] { + background-color: #008700 +} + +div.highlight .-Color[class*=-C29] { + color: #00875F +} + +div.highlight .-Color[class*=-BGC29] { + background-color: #00875F +} + +div.highlight .-Color[class*=-C30] { + color: #008787 +} + +div.highlight .-Color[class*=-BGC30] { + background-color: #008787 +} + +div.highlight .-Color[class*=-C31] { + color: #0087AF +} + +div.highlight .-Color[class*=-BGC31] { + background-color: #0087AF +} + +div.highlight .-Color[class*=-C32] { + color: #0087D7 +} + +div.highlight .-Color[class*=-BGC32] { + background-color: #0087D7 +} + +div.highlight .-Color[class*=-C33] { + color: #0087FF +} + +div.highlight .-Color[class*=-BGC33] { + background-color: #0087FF +} + +div.highlight .-Color[class*=-C34] { + color: #00AF00 +} + +div.highlight .-Color[class*=-BGC34] { + background-color: #00AF00 +} + +div.highlight .-Color[class*=-C35] { + color: #00AF5F +} + +div.highlight .-Color[class*=-BGC35] { + background-color: #00AF5F +} + +div.highlight .-Color[class*=-C36] { + color: #00AF87 +} + +div.highlight .-Color[class*=-BGC36] { + background-color: #00AF87 +} + +div.highlight .-Color[class*=-C37] { + color: #00AFAF +} + +div.highlight .-Color[class*=-BGC37] { + background-color: #00AFAF +} + +div.highlight .-Color[class*=-C38] { + color: #00AFD7 +} + +div.highlight .-Color[class*=-BGC38] { + background-color: #00AFD7 +} + +div.highlight .-Color[class*=-C39] { + color: #00AFFF +} + +div.highlight .-Color[class*=-BGC39] { + background-color: #00AFFF +} + +div.highlight .-Color[class*=-C40] { + color: #00D700 +} + +div.highlight .-Color[class*=-BGC40] { + background-color: #00D700 +} + +div.highlight .-Color[class*=-C41] { + color: #00D75F +} + +div.highlight .-Color[class*=-BGC41] { + background-color: #00D75F +} + +div.highlight .-Color[class*=-C42] { + color: #00D787 +} + +div.highlight .-Color[class*=-BGC42] { + background-color: #00D787 +} + +div.highlight .-Color[class*=-C43] { + color: #00D7AF +} + +div.highlight .-Color[class*=-BGC43] { + background-color: #00D7AF +} + +div.highlight .-Color[class*=-C44] { + color: #00D7D7 +} + +div.highlight .-Color[class*=-BGC44] { + background-color: #00D7D7 +} + +div.highlight .-Color[class*=-C45] { + color: #00D7FF +} + +div.highlight .-Color[class*=-BGC45] { + background-color: #00D7FF +} + +div.highlight .-Color[class*=-C46] { + color: #00FF00 +} + +div.highlight .-Color[class*=-BGC46] { + background-color: #00FF00 +} + +div.highlight .-Color[class*=-C47] { + color: #00FF5F +} + +div.highlight .-Color[class*=-BGC47] { + background-color: #00FF5F +} + +div.highlight .-Color[class*=-C48] { + color: #00FF87 +} + +div.highlight .-Color[class*=-BGC48] { + background-color: #00FF87 +} + +div.highlight .-Color[class*=-C49] { + color: #00FFAF +} + +div.highlight .-Color[class*=-BGC49] { + background-color: #00FFAF +} + +div.highlight .-Color[class*=-C50] { + color: #00FFD7 +} + +div.highlight .-Color[class*=-BGC50] { + background-color: #00FFD7 +} + +div.highlight .-Color[class*=-C51] { + color: #00FFFF +} + +div.highlight .-Color[class*=-BGC51] { + background-color: #00FFFF +} + +div.highlight .-Color[class*=-C52] { + color: #5F0000 +} + +div.highlight .-Color[class*=-BGC52] { + background-color: #5F0000 +} + +div.highlight .-Color[class*=-C53] { + color: #5F005F +} + +div.highlight .-Color[class*=-BGC53] { + background-color: #5F005F +} + +div.highlight .-Color[class*=-C54] { + color: #5F0087 +} + +div.highlight .-Color[class*=-BGC54] { + background-color: #5F0087 +} + +div.highlight .-Color[class*=-C55] { + color: #5F00AF +} + +div.highlight .-Color[class*=-BGC55] { + background-color: #5F00AF +} + +div.highlight .-Color[class*=-C56] { + color: #5F00D7 +} + +div.highlight .-Color[class*=-BGC56] { + background-color: #5F00D7 +} + +div.highlight .-Color[class*=-C57] { + color: #5F00FF +} + +div.highlight .-Color[class*=-BGC57] { + background-color: #5F00FF +} + +div.highlight .-Color[class*=-C58] { + color: #5F5F00 +} + +div.highlight .-Color[class*=-BGC58] { + background-color: #5F5F00 +} + +div.highlight .-Color[class*=-C59] { + color: #5F5F5F +} + +div.highlight .-Color[class*=-BGC59] { + background-color: #5F5F5F +} + +div.highlight .-Color[class*=-C60] { + color: #5F5F87 +} + +div.highlight .-Color[class*=-BGC60] { + background-color: #5F5F87 +} + +div.highlight .-Color[class*=-C61] { + color: #5F5FAF +} + +div.highlight .-Color[class*=-BGC61] { + background-color: #5F5FAF +} + +div.highlight .-Color[class*=-C62] { + color: #5F5FD7 +} + +div.highlight .-Color[class*=-BGC62] { + background-color: #5F5FD7 +} + +div.highlight .-Color[class*=-C63] { + color: #5F5FFF +} + +div.highlight .-Color[class*=-BGC63] { + background-color: #5F5FFF +} + +div.highlight .-Color[class*=-C64] { + color: #5F8700 +} + +div.highlight .-Color[class*=-BGC64] { + background-color: #5F8700 +} + +div.highlight .-Color[class*=-C65] { + color: #5F875F +} + +div.highlight .-Color[class*=-BGC65] { + background-color: #5F875F +} + +div.highlight .-Color[class*=-C66] { + color: #5F8787 +} + +div.highlight .-Color[class*=-BGC66] { + background-color: #5F8787 +} + +div.highlight .-Color[class*=-C67] { + color: #5F87AF +} + +div.highlight .-Color[class*=-BGC67] { + background-color: #5F87AF +} + +div.highlight .-Color[class*=-C68] { + color: #5F87D7 +} + +div.highlight .-Color[class*=-BGC68] { + background-color: #5F87D7 +} + +div.highlight .-Color[class*=-C69] { + color: #5F87FF +} + +div.highlight .-Color[class*=-BGC69] { + background-color: #5F87FF +} + +div.highlight .-Color[class*=-C70] { + color: #5FAF00 +} + +div.highlight .-Color[class*=-BGC70] { + background-color: #5FAF00 +} + +div.highlight .-Color[class*=-C71] { + color: #5FAF5F +} + +div.highlight .-Color[class*=-BGC71] { + background-color: #5FAF5F +} + +div.highlight .-Color[class*=-C72] { + color: #5FAF87 +} + +div.highlight .-Color[class*=-BGC72] { + background-color: #5FAF87 +} + +div.highlight .-Color[class*=-C73] { + color: #5FAFAF +} + +div.highlight .-Color[class*=-BGC73] { + background-color: #5FAFAF +} + +div.highlight .-Color[class*=-C74] { + color: #5FAFD7 +} + +div.highlight .-Color[class*=-BGC74] { + background-color: #5FAFD7 +} + +div.highlight .-Color[class*=-C75] { + color: #5FAFFF +} + +div.highlight .-Color[class*=-BGC75] { + background-color: #5FAFFF +} + +div.highlight .-Color[class*=-C76] { + color: #5FD700 +} + +div.highlight .-Color[class*=-BGC76] { + background-color: #5FD700 +} + +div.highlight .-Color[class*=-C77] { + color: #5FD75F +} + +div.highlight .-Color[class*=-BGC77] { + background-color: #5FD75F +} + +div.highlight .-Color[class*=-C78] { + color: #5FD787 +} + +div.highlight .-Color[class*=-BGC78] { + background-color: #5FD787 +} + +div.highlight .-Color[class*=-C79] { + color: #5FD7AF +} + +div.highlight .-Color[class*=-BGC79] { + background-color: #5FD7AF +} + +div.highlight .-Color[class*=-C80] { + color: #5FD7D7 +} + +div.highlight .-Color[class*=-BGC80] { + background-color: #5FD7D7 +} + +div.highlight .-Color[class*=-C81] { + color: #5FD7FF +} + +div.highlight .-Color[class*=-BGC81] { + background-color: #5FD7FF +} + +div.highlight .-Color[class*=-C82] { + color: #5FFF00 +} + +div.highlight .-Color[class*=-BGC82] { + background-color: #5FFF00 +} + +div.highlight .-Color[class*=-C83] { + color: #5FFF5F +} + +div.highlight .-Color[class*=-BGC83] { + background-color: #5FFF5F +} + +div.highlight .-Color[class*=-C84] { + color: #5FFF87 +} + +div.highlight .-Color[class*=-BGC84] { + background-color: #5FFF87 +} + +div.highlight .-Color[class*=-C85] { + color: #5FFFAF +} + +div.highlight .-Color[class*=-BGC85] { + background-color: #5FFFAF +} + +div.highlight .-Color[class*=-C86] { + color: #5FFFD7 +} + +div.highlight .-Color[class*=-BGC86] { + background-color: #5FFFD7 +} + +div.highlight .-Color[class*=-C87] { + color: #5FFFFF +} + +div.highlight .-Color[class*=-BGC87] { + background-color: #5FFFFF +} + +div.highlight .-Color[class*=-C88] { + color: #870000 +} + +div.highlight .-Color[class*=-BGC88] { + background-color: #870000 +} + +div.highlight .-Color[class*=-C89] { + color: #87005F +} + +div.highlight .-Color[class*=-BGC89] { + background-color: #87005F +} + +div.highlight .-Color[class*=-C90] { + color: #870087 +} + +div.highlight .-Color[class*=-BGC90] { + background-color: #870087 +} + +div.highlight .-Color[class*=-C91] { + color: #8700AF +} + +div.highlight .-Color[class*=-BGC91] { + background-color: #8700AF +} + +div.highlight .-Color[class*=-C92] { + color: #8700D7 +} + +div.highlight .-Color[class*=-BGC92] { + background-color: #8700D7 +} + +div.highlight .-Color[class*=-C93] { + color: #8700FF +} + +div.highlight .-Color[class*=-BGC93] { + background-color: #8700FF +} + +div.highlight .-Color[class*=-C94] { + color: #875F00 +} + +div.highlight .-Color[class*=-BGC94] { + background-color: #875F00 +} + +div.highlight .-Color[class*=-C95] { + color: #875F5F +} + +div.highlight .-Color[class*=-BGC95] { + background-color: #875F5F +} + +div.highlight .-Color[class*=-C96] { + color: #875F87 +} + +div.highlight .-Color[class*=-BGC96] { + background-color: #875F87 +} + +div.highlight .-Color[class*=-C97] { + color: #875FAF +} + +div.highlight .-Color[class*=-BGC97] { + background-color: #875FAF +} + +div.highlight .-Color[class*=-C98] { + color: #875FD7 +} + +div.highlight .-Color[class*=-BGC98] { + background-color: #875FD7 +} + +div.highlight .-Color[class*=-C99] { + color: #875FFF +} + +div.highlight .-Color[class*=-BGC99] { + background-color: #875FFF +} + +div.highlight .-Color[class*=-C100] { + color: #878700 +} + +div.highlight .-Color[class*=-BGC100] { + background-color: #878700 +} + +div.highlight .-Color[class*=-C101] { + color: #87875F +} + +div.highlight .-Color[class*=-BGC101] { + background-color: #87875F +} + +div.highlight .-Color[class*=-C102] { + color: #878787 +} + +div.highlight .-Color[class*=-BGC102] { + background-color: #878787 +} + +div.highlight .-Color[class*=-C103] { + color: #8787AF +} + +div.highlight .-Color[class*=-BGC103] { + background-color: #8787AF +} + +div.highlight .-Color[class*=-C104] { + color: #8787D7 +} + +div.highlight .-Color[class*=-BGC104] { + background-color: #8787D7 +} + +div.highlight .-Color[class*=-C105] { + color: #8787FF +} + +div.highlight .-Color[class*=-BGC105] { + background-color: #8787FF +} + +div.highlight .-Color[class*=-C106] { + color: #87AF00 +} + +div.highlight .-Color[class*=-BGC106] { + background-color: #87AF00 +} + +div.highlight .-Color[class*=-C107] { + color: #87AF5F +} + +div.highlight .-Color[class*=-BGC107] { + background-color: #87AF5F +} + +div.highlight .-Color[class*=-C108] { + color: #87AF87 +} + +div.highlight .-Color[class*=-BGC108] { + background-color: #87AF87 +} + +div.highlight .-Color[class*=-C109] { + color: #87AFAF +} + +div.highlight .-Color[class*=-BGC109] { + background-color: #87AFAF +} + +div.highlight .-Color[class*=-C110] { + color: #87AFD7 +} + +div.highlight .-Color[class*=-BGC110] { + background-color: #87AFD7 +} + +div.highlight .-Color[class*=-C111] { + color: #87AFFF +} + +div.highlight .-Color[class*=-BGC111] { + background-color: #87AFFF +} + +div.highlight .-Color[class*=-C112] { + color: #87D700 +} + +div.highlight .-Color[class*=-BGC112] { + background-color: #87D700 +} + +div.highlight .-Color[class*=-C113] { + color: #87D75F +} + +div.highlight .-Color[class*=-BGC113] { + background-color: #87D75F +} + +div.highlight .-Color[class*=-C114] { + color: #87D787 +} + +div.highlight .-Color[class*=-BGC114] { + background-color: #87D787 +} + +div.highlight .-Color[class*=-C115] { + color: #87D7AF +} + +div.highlight .-Color[class*=-BGC115] { + background-color: #87D7AF +} + +div.highlight .-Color[class*=-C116] { + color: #87D7D7 +} + +div.highlight .-Color[class*=-BGC116] { + background-color: #87D7D7 +} + +div.highlight .-Color[class*=-C117] { + color: #87D7FF +} + +div.highlight .-Color[class*=-BGC117] { + background-color: #87D7FF +} + +div.highlight .-Color[class*=-C118] { + color: #87FF00 +} + +div.highlight .-Color[class*=-BGC118] { + background-color: #87FF00 +} + +div.highlight .-Color[class*=-C119] { + color: #87FF5F +} + +div.highlight .-Color[class*=-BGC119] { + background-color: #87FF5F +} + +div.highlight .-Color[class*=-C120] { + color: #87FF87 +} + +div.highlight .-Color[class*=-BGC120] { + background-color: #87FF87 +} + +div.highlight .-Color[class*=-C121] { + color: #87FFAF +} + +div.highlight .-Color[class*=-BGC121] { + background-color: #87FFAF +} + +div.highlight .-Color[class*=-C122] { + color: #87FFD7 +} + +div.highlight .-Color[class*=-BGC122] { + background-color: #87FFD7 +} + +div.highlight .-Color[class*=-C123] { + color: #87FFFF +} + +div.highlight .-Color[class*=-BGC123] { + background-color: #87FFFF +} + +div.highlight .-Color[class*=-C124] { + color: #AF0000 +} + +div.highlight .-Color[class*=-BGC124] { + background-color: #AF0000 +} + +div.highlight .-Color[class*=-C125] { + color: #AF005F +} + +div.highlight .-Color[class*=-BGC125] { + background-color: #AF005F +} + +div.highlight .-Color[class*=-C126] { + color: #AF0087 +} + +div.highlight .-Color[class*=-BGC126] { + background-color: #AF0087 +} + +div.highlight .-Color[class*=-C127] { + color: #AF00AF +} + +div.highlight .-Color[class*=-BGC127] { + background-color: #AF00AF +} + +div.highlight .-Color[class*=-C128] { + color: #AF00D7 +} + +div.highlight .-Color[class*=-BGC128] { + background-color: #AF00D7 +} + +div.highlight .-Color[class*=-C129] { + color: #AF00FF +} + +div.highlight .-Color[class*=-BGC129] { + background-color: #AF00FF +} + +div.highlight .-Color[class*=-C130] { + color: #AF5F00 +} + +div.highlight .-Color[class*=-BGC130] { + background-color: #AF5F00 +} + +div.highlight .-Color[class*=-C131] { + color: #AF5F5F +} + +div.highlight .-Color[class*=-BGC131] { + background-color: #AF5F5F +} + +div.highlight .-Color[class*=-C132] { + color: #AF5F87 +} + +div.highlight .-Color[class*=-BGC132] { + background-color: #AF5F87 +} + +div.highlight .-Color[class*=-C133] { + color: #AF5FAF +} + +div.highlight .-Color[class*=-BGC133] { + background-color: #AF5FAF +} + +div.highlight .-Color[class*=-C134] { + color: #AF5FD7 +} + +div.highlight .-Color[class*=-BGC134] { + background-color: #AF5FD7 +} + +div.highlight .-Color[class*=-C135] { + color: #AF5FFF +} + +div.highlight .-Color[class*=-BGC135] { + background-color: #AF5FFF +} + +div.highlight .-Color[class*=-C136] { + color: #AF8700 +} + +div.highlight .-Color[class*=-BGC136] { + background-color: #AF8700 +} + +div.highlight .-Color[class*=-C137] { + color: #AF875F +} + +div.highlight .-Color[class*=-BGC137] { + background-color: #AF875F +} + +div.highlight .-Color[class*=-C138] { + color: #AF8787 +} + +div.highlight .-Color[class*=-BGC138] { + background-color: #AF8787 +} + +div.highlight .-Color[class*=-C139] { + color: #AF87AF +} + +div.highlight .-Color[class*=-BGC139] { + background-color: #AF87AF +} + +div.highlight .-Color[class*=-C140] { + color: #AF87D7 +} + +div.highlight .-Color[class*=-BGC140] { + background-color: #AF87D7 +} + +div.highlight .-Color[class*=-C141] { + color: #AF87FF +} + +div.highlight .-Color[class*=-BGC141] { + background-color: #AF87FF +} + +div.highlight .-Color[class*=-C142] { + color: #AFAF00 +} + +div.highlight .-Color[class*=-BGC142] { + background-color: #AFAF00 +} + +div.highlight .-Color[class*=-C143] { + color: #AFAF5F +} + +div.highlight .-Color[class*=-BGC143] { + background-color: #AFAF5F +} + +div.highlight .-Color[class*=-C144] { + color: #AFAF87 +} + +div.highlight .-Color[class*=-BGC144] { + background-color: #AFAF87 +} + +div.highlight 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+ +/* override colors in sphinx_lesson.css with the schemes here: https://personal.sron.nl/~pault/#sec:qualitative */ + +/* instructor-note */ +.rst-content .instructor-note { + background: #DDDDDD; +} +.rst-content .instructor-note > .admonition-title { + background: #BBBBBB; +} +.rst-content .instructor-note > .admonition-title::before { + content: ""; +} + +/* callout */ +.rst-content .callout { + background: #EEEEBB; +} +.rst-content .callout > .admonition-title { + background: #BBCC33; +} + +/* questions */ +.rst-content .questions { + background: rgba(253, 219, 199, 0.3); +} +.rst-content .questions > .admonition-title { + background: rgba(204, 51, 17, 0.5); +} + +/* discussion */ +.rst-content .discussion { + background: rgba(231, 212, 232 0.3); +} +.rst-content .discussion > .admonition-title { + background: rgba(194, 165, 207, 0.5); +} + +/* signature */ +.rst-content .signature { + background: rgba(217, 240, 211, 0.3); +} +.rst-content .signature > .admonition-title { + background: rgba(172, 211, 158, 0.5); +} +.rst-content .signature > .admonition-title::before { + content: "\01F527"; +} + +/* parameters */ +.rst-content .parameters { + background: rgba(217, 240, 211, 0.0); +} +.rst-content .parameters > .admonition-title { + background: rgba(172, 211, 158, 0.5); +} +.rst-content .parameters > .admonition-title::before { + content: "\01F4BB"; +} + +/* typealong */ +.rst-content .typealong { + background: rgba(221, 221, 221, 0.3); +} +.rst-content .typealong > .admonition-title { + background: rgba(187, 187, 187, 1.0); +} +.rst-content .typealong > .admonition-title::before { + content: "\02328"; +} + +/* Equation numbers to the right */ +.math { + text-align: left; +} +.eqno { + float: right; +} diff --git a/singlehtml/_static/plus.png b/singlehtml/_static/plus.png new file mode 100644 index 0000000..7107cec Binary files /dev/null and b/singlehtml/_static/plus.png differ diff --git a/singlehtml/_static/pygments.css b/singlehtml/_static/pygments.css 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// query matches the full name of an object + objNameMatch: 11, + // or matches in the last dotted part of the object name + objPartialMatch: 6, + // Additive scores depending on the priority of the object + objPrio: { + 0: 15, // used to be importantResults + 1: 5, // used to be objectResults + 2: -5, // used to be unimportantResults + }, + // Used when the priority is not in the mapping. + objPrioDefault: 0, + + // query found in title + title: 15, + partialTitle: 7, + // query found in terms + term: 5, + partialTerm: 2, + }; +} + +const _removeChildren = (element) => { + while (element && element.lastChild) element.removeChild(element.lastChild); +}; + +/** + * See https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions#escaping + */ +const _escapeRegExp = (string) => + string.replace(/[.*+\-?^${}()|[\]\\]/g, "\\$&"); // $& means the whole matched string + +const _displayItem = (item, searchTerms, highlightTerms) => { + const docBuilder = DOCUMENTATION_OPTIONS.BUILDER; + const docFileSuffix = DOCUMENTATION_OPTIONS.FILE_SUFFIX; + const docLinkSuffix = DOCUMENTATION_OPTIONS.LINK_SUFFIX; + const showSearchSummary = DOCUMENTATION_OPTIONS.SHOW_SEARCH_SUMMARY; + const contentRoot = document.documentElement.dataset.content_root; + + const [docName, title, anchor, descr, score, _filename] = item; + + let listItem = document.createElement("li"); + let requestUrl; + let linkUrl; + if (docBuilder === "dirhtml") { + // dirhtml builder + let dirname = docName + "/"; + if (dirname.match(/\/index\/$/)) + dirname = dirname.substring(0, dirname.length - 6); + else if (dirname === "index/") dirname = ""; + requestUrl = contentRoot + dirname; + linkUrl = requestUrl; + } else { + // normal html builders + requestUrl = contentRoot + docName + docFileSuffix; + linkUrl = docName + docLinkSuffix; + } + let linkEl = listItem.appendChild(document.createElement("a")); + linkEl.href = linkUrl + anchor; + linkEl.dataset.score = score; + linkEl.innerHTML = title; + if (descr) { + listItem.appendChild(document.createElement("span")).innerHTML = + " (" + descr + ")"; + // highlight search terms in the description + if (SPHINX_HIGHLIGHT_ENABLED) // set in sphinx_highlight.js + highlightTerms.forEach((term) => _highlightText(listItem, term, "highlighted")); + } + else if (showSearchSummary) + fetch(requestUrl) + .then((responseData) => responseData.text()) + .then((data) => { + if (data) + listItem.appendChild( + Search.makeSearchSummary(data, searchTerms, anchor) + ); + // highlight search terms in the summary + if (SPHINX_HIGHLIGHT_ENABLED) // set in sphinx_highlight.js + highlightTerms.forEach((term) => _highlightText(listItem, term, "highlighted")); + }); + Search.output.appendChild(listItem); +}; +const _finishSearch = (resultCount) => { + Search.stopPulse(); + Search.title.innerText = _("Search Results"); + if (!resultCount) + Search.status.innerText = Documentation.gettext( + "Your search did not match any documents. Please make sure that all words are spelled correctly and that you've selected enough categories." + ); + else + Search.status.innerText = _( + "Search finished, found ${resultCount} page(s) matching the search query." + ).replace('${resultCount}', resultCount); +}; +const _displayNextItem = ( + results, + resultCount, + searchTerms, + highlightTerms, +) => { + // results left, load the summary and display it + // this is intended to be dynamic (don't sub resultsCount) + if (results.length) { + _displayItem(results.pop(), searchTerms, highlightTerms); + setTimeout( + () => _displayNextItem(results, resultCount, searchTerms, highlightTerms), + 5 + ); + } + // search finished, update title and status message + else _finishSearch(resultCount); +}; +// Helper function used by query() to order search results. +// Each input is an array of [docname, title, anchor, descr, score, filename]. +// Order the results by score (in opposite order of appearance, since the +// `_displayNextItem` function uses pop() to retrieve items) and then alphabetically. +const _orderResultsByScoreThenName = (a, b) => { + const leftScore = a[4]; + const rightScore = b[4]; + if (leftScore === rightScore) { + // same score: sort alphabetically + const leftTitle = a[1].toLowerCase(); + const rightTitle = b[1].toLowerCase(); + if (leftTitle === rightTitle) return 0; + return leftTitle > rightTitle ? -1 : 1; // inverted is intentional + } + return leftScore > rightScore ? 1 : -1; +}; + +/** + * Default splitQuery function. Can be overridden in ``sphinx.search`` with a + * custom function per language. + * + * The regular expression works by splitting the string on consecutive characters + * that are not Unicode letters, numbers, underscores, or emoji characters. + * This is the same as ``\W+`` in Python, preserving the surrogate pair area. + */ +if (typeof splitQuery === "undefined") { + var splitQuery = (query) => query + .split(/[^\p{Letter}\p{Number}_\p{Emoji_Presentation}]+/gu) + .filter(term => term) // remove remaining empty strings +} + +/** + * Search Module + */ +const Search = { + _index: null, + _queued_query: null, + _pulse_status: -1, + + htmlToText: (htmlString, anchor) => { + const htmlElement = new DOMParser().parseFromString(htmlString, 'text/html'); + for (const removalQuery of [".headerlink", "script", "style"]) { + htmlElement.querySelectorAll(removalQuery).forEach((el) => { el.remove() }); + } + if (anchor) { + const anchorContent = htmlElement.querySelector(`[role="main"] ${anchor}`); + if (anchorContent) return anchorContent.textContent; + + console.warn( + `Anchored content block not found. Sphinx search tries to obtain it via DOM query '[role=main] ${anchor}'. Check your theme or template.` + ); + } + + // if anchor not specified or not found, fall back to main content + const docContent = htmlElement.querySelector('[role="main"]'); + if (docContent) return docContent.textContent; + + console.warn( + "Content block not found. Sphinx search tries to obtain it via DOM query '[role=main]'. Check your theme or template." + ); + return ""; + }, + + init: () => { + const query = new URLSearchParams(window.location.search).get("q"); + document + .querySelectorAll('input[name="q"]') + .forEach((el) => (el.value = query)); + if (query) Search.performSearch(query); + }, + + loadIndex: (url) => + (document.body.appendChild(document.createElement("script")).src = url), + + setIndex: (index) => { + Search._index = index; + if (Search._queued_query !== null) { + const query = Search._queued_query; + Search._queued_query = null; + Search.query(query); + } + }, + + hasIndex: () => Search._index !== null, + + deferQuery: (query) => (Search._queued_query = query), + + stopPulse: () => (Search._pulse_status = -1), + + startPulse: () => { + if (Search._pulse_status >= 0) return; + + const pulse = () => { + Search._pulse_status = (Search._pulse_status + 1) % 4; + Search.dots.innerText = ".".repeat(Search._pulse_status); + if (Search._pulse_status >= 0) window.setTimeout(pulse, 500); + }; + pulse(); + }, + + /** + * perform a search for something (or wait until index is loaded) + */ + performSearch: (query) => { + // create the required interface elements + const searchText = document.createElement("h2"); + searchText.textContent = _("Searching"); + const searchSummary = document.createElement("p"); + searchSummary.classList.add("search-summary"); + searchSummary.innerText = ""; + const searchList = document.createElement("ul"); + searchList.classList.add("search"); + + const out = document.getElementById("search-results"); + Search.title = out.appendChild(searchText); + Search.dots = Search.title.appendChild(document.createElement("span")); + Search.status = out.appendChild(searchSummary); + Search.output = out.appendChild(searchList); + + const searchProgress = document.getElementById("search-progress"); + // Some themes don't use the search progress node + if (searchProgress) { + searchProgress.innerText = _("Preparing search..."); + } + Search.startPulse(); + + // index already loaded, the browser was quick! + if (Search.hasIndex()) Search.query(query); + else Search.deferQuery(query); + }, + + _parseQuery: (query) => { + // stem the search terms and add them to the correct list + const stemmer = new Stemmer(); + const searchTerms = new Set(); + const excludedTerms = new Set(); + const highlightTerms = new Set(); + const objectTerms = new Set(splitQuery(query.toLowerCase().trim())); + splitQuery(query.trim()).forEach((queryTerm) => { + const queryTermLower = queryTerm.toLowerCase(); + + // maybe skip this "word" + // stopwords array is from language_data.js + if ( + stopwords.indexOf(queryTermLower) !== -1 || + queryTerm.match(/^\d+$/) + ) + return; + + // stem the word + let word = stemmer.stemWord(queryTermLower); + // select the correct list + if (word[0] === "-") excludedTerms.add(word.substr(1)); + else { + searchTerms.add(word); + highlightTerms.add(queryTermLower); + } + }); + + if (SPHINX_HIGHLIGHT_ENABLED) { // set in sphinx_highlight.js + localStorage.setItem("sphinx_highlight_terms", [...highlightTerms].join(" ")) + } + + // console.debug("SEARCH: searching for:"); + // console.info("required: ", [...searchTerms]); + // console.info("excluded: ", [...excludedTerms]); + + return [query, searchTerms, excludedTerms, highlightTerms, objectTerms]; + }, + + /** + * execute search (requires search index to be loaded) + */ + _performSearch: (query, searchTerms, excludedTerms, highlightTerms, objectTerms) => { + const filenames = Search._index.filenames; + const docNames = Search._index.docnames; + const titles = Search._index.titles; + const allTitles = Search._index.alltitles; + const indexEntries = Search._index.indexentries; + + // Collect multiple result groups to be sorted separately and then ordered. + // Each is an array of [docname, title, anchor, descr, score, filename]. + const normalResults = []; + const nonMainIndexResults = []; + + _removeChildren(document.getElementById("search-progress")); + + const queryLower = query.toLowerCase().trim(); + for (const [title, foundTitles] of Object.entries(allTitles)) { + if (title.toLowerCase().trim().includes(queryLower) && (queryLower.length >= title.length/2)) { + for (const [file, id] of foundTitles) { + const score = Math.round(Scorer.title * queryLower.length / title.length); + const boost = titles[file] === title ? 1 : 0; // add a boost for document titles + normalResults.push([ + docNames[file], + titles[file] !== title ? `${titles[file]} > ${title}` : title, + id !== null ? "#" + id : "", + null, + score + boost, + filenames[file], + ]); + } + } + } + + // search for explicit entries in index directives + for (const [entry, foundEntries] of Object.entries(indexEntries)) { + if (entry.includes(queryLower) && (queryLower.length >= entry.length/2)) { + for (const [file, id, isMain] of foundEntries) { + const score = Math.round(100 * queryLower.length / entry.length); + const result = [ + docNames[file], + titles[file], + id ? "#" + id : "", + null, + score, + filenames[file], + ]; + if (isMain) { + normalResults.push(result); + } else { + nonMainIndexResults.push(result); + } + } + } + } + + // lookup as object + objectTerms.forEach((term) => + normalResults.push(...Search.performObjectSearch(term, objectTerms)) + ); + + // lookup as search terms in fulltext + normalResults.push(...Search.performTermsSearch(searchTerms, excludedTerms)); + + // let the scorer override scores with a custom scoring function + if (Scorer.score) { + normalResults.forEach((item) => (item[4] = Scorer.score(item))); + nonMainIndexResults.forEach((item) => (item[4] = Scorer.score(item))); + } + + // Sort each group of results by score and then alphabetically by name. + normalResults.sort(_orderResultsByScoreThenName); + nonMainIndexResults.sort(_orderResultsByScoreThenName); + + // Combine the result groups in (reverse) order. + // Non-main index entries are typically arbitrary cross-references, + // so display them after other results. + let results = [...nonMainIndexResults, ...normalResults]; + + // remove duplicate search results + // note the reversing of results, so that in the case of duplicates, the highest-scoring entry is kept + let seen = new Set(); + results = results.reverse().reduce((acc, result) => { + let resultStr = result.slice(0, 4).concat([result[5]]).map(v => String(v)).join(','); + if (!seen.has(resultStr)) { + acc.push(result); + seen.add(resultStr); + } + return acc; + }, []); + + return results.reverse(); + }, + + query: (query) => { + const [searchQuery, searchTerms, excludedTerms, highlightTerms, objectTerms] = Search._parseQuery(query); + const results = Search._performSearch(searchQuery, searchTerms, excludedTerms, highlightTerms, objectTerms); + + // for debugging + //Search.lastresults = results.slice(); // a copy + // console.info("search results:", Search.lastresults); + + // print the results + _displayNextItem(results, results.length, searchTerms, highlightTerms); + }, + + /** + * search for object names + */ + performObjectSearch: (object, objectTerms) => { + const filenames = Search._index.filenames; + const docNames = Search._index.docnames; + const objects = Search._index.objects; + const objNames = Search._index.objnames; + const titles = Search._index.titles; + + const results = []; + + const objectSearchCallback = (prefix, match) => { + const name = match[4] + const fullname = (prefix ? prefix + "." : "") + name; + const fullnameLower = fullname.toLowerCase(); + if (fullnameLower.indexOf(object) < 0) return; + + let score = 0; + const parts = fullnameLower.split("."); + + // check for different match types: exact matches of full name or + // "last name" (i.e. last dotted part) + if (fullnameLower === object || parts.slice(-1)[0] === object) + score += Scorer.objNameMatch; + else if (parts.slice(-1)[0].indexOf(object) > -1) + score += Scorer.objPartialMatch; // matches in last name + + const objName = objNames[match[1]][2]; + const title = titles[match[0]]; + + // If more than one term searched for, we require other words to be + // found in the name/title/description + const otherTerms = new Set(objectTerms); + otherTerms.delete(object); + if (otherTerms.size > 0) { + const haystack = `${prefix} ${name} ${objName} ${title}`.toLowerCase(); + if ( + [...otherTerms].some((otherTerm) => haystack.indexOf(otherTerm) < 0) + ) + return; + } + + let anchor = match[3]; + if (anchor === "") anchor = fullname; + else if (anchor === "-") anchor = objNames[match[1]][1] + "-" + fullname; + + const descr = objName + _(", in ") + title; + + // add custom score for some objects according to scorer + if (Scorer.objPrio.hasOwnProperty(match[2])) + score += Scorer.objPrio[match[2]]; + else score += Scorer.objPrioDefault; + + results.push([ + docNames[match[0]], + fullname, + "#" + anchor, + descr, + score, + filenames[match[0]], + ]); + }; + Object.keys(objects).forEach((prefix) => + objects[prefix].forEach((array) => + objectSearchCallback(prefix, array) + ) + ); + return results; + }, + + /** + * search for full-text terms in the index + */ + performTermsSearch: (searchTerms, excludedTerms) => { + // prepare search + const terms = Search._index.terms; + const titleTerms = Search._index.titleterms; + const filenames = Search._index.filenames; + const docNames = Search._index.docnames; + const titles = Search._index.titles; + + const scoreMap = new Map(); + const fileMap = new Map(); + + // perform the search on the required terms + searchTerms.forEach((word) => { + const files = []; + const arr = [ + { files: terms[word], score: Scorer.term }, + { files: titleTerms[word], score: Scorer.title }, + ]; + // add support for partial matches + if (word.length > 2) { + const escapedWord = _escapeRegExp(word); + if (!terms.hasOwnProperty(word)) { + Object.keys(terms).forEach((term) => { + if (term.match(escapedWord)) + arr.push({ files: terms[term], score: Scorer.partialTerm }); + }); + } + if (!titleTerms.hasOwnProperty(word)) { + Object.keys(titleTerms).forEach((term) => { + if (term.match(escapedWord)) + arr.push({ files: titleTerms[term], score: Scorer.partialTitle }); + }); + } + } + + // no match but word was a required one + if (arr.every((record) => record.files === undefined)) return; + + // found search word in contents + arr.forEach((record) => { + if (record.files === undefined) return; + + let recordFiles = record.files; + if (recordFiles.length === undefined) recordFiles = [recordFiles]; + files.push(...recordFiles); + + // set score for the word in each file + recordFiles.forEach((file) => { + if (!scoreMap.has(file)) scoreMap.set(file, {}); + scoreMap.get(file)[word] = record.score; + }); + }); + + // create the mapping + files.forEach((file) => { + if (!fileMap.has(file)) fileMap.set(file, [word]); + else if (fileMap.get(file).indexOf(word) === -1) fileMap.get(file).push(word); + }); + }); + + // now check if the files don't contain excluded terms + const results = []; + for (const [file, wordList] of fileMap) { + // check if all requirements are matched + + // as search terms with length < 3 are discarded + const filteredTermCount = [...searchTerms].filter( + (term) => term.length > 2 + ).length; + if ( + wordList.length !== searchTerms.size && + wordList.length !== filteredTermCount + ) + continue; + + // ensure that none of the excluded terms is in the search result + if ( + [...excludedTerms].some( + (term) => + terms[term] === file || + titleTerms[term] === file || + (terms[term] || []).includes(file) || + (titleTerms[term] || []).includes(file) + ) + ) + break; + + // select one (max) score for the file. + const score = Math.max(...wordList.map((w) => scoreMap.get(file)[w])); + // add result to the result list + results.push([ + docNames[file], + titles[file], + "", + null, + score, + filenames[file], + ]); + } + return results; + }, + + /** + * helper function to return a node containing the + * search summary for a given text. keywords is a list + * of stemmed words. + */ + makeSearchSummary: (htmlText, keywords, anchor) => { + const text = Search.htmlToText(htmlText, anchor); + if (text === "") return null; + + const textLower = text.toLowerCase(); + const actualStartPosition = [...keywords] + .map((k) => textLower.indexOf(k.toLowerCase())) + .filter((i) => i > -1) + .slice(-1)[0]; + const startWithContext = Math.max(actualStartPosition - 120, 0); + + const top = startWithContext === 0 ? "" : "..."; + const tail = startWithContext + 240 < text.length ? "..." : ""; + + let summary = document.createElement("p"); + summary.classList.add("context"); + summary.textContent = top + text.substr(startWithContext, 240).trim() + tail; + + return summary; + }, +}; + +_ready(Search.init); diff --git a/singlehtml/_static/sphinx_highlight.js b/singlehtml/_static/sphinx_highlight.js new file mode 100644 index 0000000..8a96c69 --- /dev/null +++ b/singlehtml/_static/sphinx_highlight.js @@ -0,0 +1,154 @@ +/* Highlighting utilities for Sphinx HTML documentation. */ +"use strict"; + +const SPHINX_HIGHLIGHT_ENABLED = true + +/** + * highlight a given string on a node by wrapping it in + * span elements with the given class name. + */ +const _highlight = (node, addItems, text, className) => { + if (node.nodeType === Node.TEXT_NODE) { + const val = node.nodeValue; + const parent = node.parentNode; + const pos = val.toLowerCase().indexOf(text); + if ( + pos >= 0 && + !parent.classList.contains(className) && + !parent.classList.contains("nohighlight") + ) { + let span; + + const closestNode = parent.closest("body, svg, foreignObject"); + const isInSVG = closestNode && closestNode.matches("svg"); + if (isInSVG) { + span = document.createElementNS("http://www.w3.org/2000/svg", "tspan"); + } else { + span = document.createElement("span"); + span.classList.add(className); + } + + span.appendChild(document.createTextNode(val.substr(pos, text.length))); + const rest = document.createTextNode(val.substr(pos + text.length)); + parent.insertBefore( + span, + parent.insertBefore( + rest, + node.nextSibling + ) + ); + node.nodeValue = val.substr(0, pos); + /* There may be more occurrences of search term in this node. So call this + * function recursively on the remaining fragment. + */ + _highlight(rest, addItems, text, className); + + if (isInSVG) { + const rect = document.createElementNS( + "http://www.w3.org/2000/svg", + "rect" + ); + const bbox = parent.getBBox(); + rect.x.baseVal.value = bbox.x; + rect.y.baseVal.value = bbox.y; + rect.width.baseVal.value = bbox.width; + rect.height.baseVal.value = bbox.height; + rect.setAttribute("class", className); + addItems.push({ parent: parent, target: rect }); + } + } + } else if (node.matches && !node.matches("button, select, textarea")) { + node.childNodes.forEach((el) => _highlight(el, addItems, text, className)); + } +}; +const _highlightText = (thisNode, text, className) => { + let addItems = []; + _highlight(thisNode, addItems, text, className); + addItems.forEach((obj) => + obj.parent.insertAdjacentElement("beforebegin", obj.target) + ); +}; + +/** + * Small JavaScript module for the documentation. + */ +const SphinxHighlight = { + + /** + * highlight the search words provided in localstorage in the text + */ + highlightSearchWords: () => { + if (!SPHINX_HIGHLIGHT_ENABLED) return; // bail if no highlight + + // get and clear terms from localstorage + const url = new URL(window.location); + const highlight = + localStorage.getItem("sphinx_highlight_terms") + || url.searchParams.get("highlight") + || ""; + localStorage.removeItem("sphinx_highlight_terms") + url.searchParams.delete("highlight"); + window.history.replaceState({}, "", url); + + // get individual terms from highlight string + const terms = highlight.toLowerCase().split(/\s+/).filter(x => x); + if (terms.length === 0) return; // nothing to do + + // There should never be more than one element matching "div.body" + const divBody = document.querySelectorAll("div.body"); + const body = divBody.length ? divBody[0] : document.querySelector("body"); + window.setTimeout(() => { + terms.forEach((term) => _highlightText(body, term, "highlighted")); + }, 10); + + const searchBox = document.getElementById("searchbox"); + if (searchBox === null) return; + searchBox.appendChild( + document + .createRange() + .createContextualFragment( + '

' + + '' + + _("Hide Search Matches") + + "

" + ) + ); + }, + + /** + * helper function to hide the search marks again + */ + hideSearchWords: () => { + document + .querySelectorAll("#searchbox .highlight-link") + .forEach((el) => el.remove()); + document + .querySelectorAll("span.highlighted") + .forEach((el) => el.classList.remove("highlighted")); + localStorage.removeItem("sphinx_highlight_terms") + }, + + initEscapeListener: () => { + // only install a listener if it is really needed + if (!DOCUMENTATION_OPTIONS.ENABLE_SEARCH_SHORTCUTS) return; + + document.addEventListener("keydown", (event) => { + // bail for input elements + if (BLACKLISTED_KEY_CONTROL_ELEMENTS.has(document.activeElement.tagName)) return; + // bail with special keys + if (event.shiftKey || event.altKey || event.ctrlKey || event.metaKey) return; + if (DOCUMENTATION_OPTIONS.ENABLE_SEARCH_SHORTCUTS && (event.key === "Escape")) { + SphinxHighlight.hideSearchWords(); + event.preventDefault(); + } + }); + }, +}; + +_ready(() => { + /* Do not call highlightSearchWords() when we are on the search page. + * It will highlight words from the *previous* search query. + */ + if (typeof Search === "undefined") SphinxHighlight.highlightSearchWords(); + SphinxHighlight.initEscapeListener(); +}); diff --git a/singlehtml/_static/sphinx_lesson.css b/singlehtml/_static/sphinx_lesson.css new file mode 100644 index 0000000..14b20c6 --- /dev/null +++ b/singlehtml/_static/sphinx_lesson.css @@ -0,0 +1,51 @@ +/* sphinx_lesson.css */ + +body.wy-body-for-nav img.with-border { + border: 2px solid; +} + +.rst-content .admonition-no-content { + padding-bottom: 0px; +} + +.rst-content .demo > .admonition-title::before { + content: "\01F440"; /* Eyes */ } +.rst-content .type-along > .admonition-title::before { + content: "\02328\0FE0F"; /* Keyboard */ } +.rst-content .exercise > .admonition-title::before { + content: "\0270D\0FE0F"; /* Hand */ } +.rst-content .solution > .admonition-title::before { + content: "\02714\0FE0E"; /* Check mark */ } +.rst-content .homework > .admonition-title::before { + content: "\01F4DD"; /* Memo */ } +.rst-content .discussion > .admonition-title::before { + content: "\01F4AC"; /* Speech balloon */ } +.rst-content .questions > .admonition-title::before { + content: "\02753\0FE0E"; /* Question mark */ } +.rst-content .prerequisites > .admonition-title::before { + content: "\02699"; /* Gear */ } +.rst-content .seealso > .admonition-title::before { + content: "\027A1\0FE0E"; /* Question mark */ } + + +/* instructor-note */ +.rst-content .instructor-note { + background: #e7e7e7; +} +.rst-content .instructor-note > .admonition-title { + background: #6a6a6a; +} +.rst-content .instructor-note > .admonition-title::before { + content: ""; +} + + +/* sphinx_toggle_button, make the font white */ +.rst-content .toggle.admonition button.toggle-button { + color: white; +} + +/* sphinx-togglebutton, remove underflow when toggled to hidden mode */ +.rst-content .admonition.toggle-hidden { + padding-bottom: 0px; +} diff --git a/singlehtml/_static/sphinx_rtd_theme_ext_color_contrast.css b/singlehtml/_static/sphinx_rtd_theme_ext_color_contrast.css new file mode 100644 index 0000000..e68feb8 --- /dev/null +++ b/singlehtml/_static/sphinx_rtd_theme_ext_color_contrast.css @@ -0,0 +1,47 @@ +/* The following are for web accessibility of sphinx_rtd_theme: they + * solve some of the most frequent contrast issues. Remove when this + * solved: + * https://github.com/readthedocs/sphinx_rtd_theme/issues/971 + */ +/* background: #fcfcfc, note boxes #E7F2FA */ +a { color: #2573A7; } /* original #2980B9, #1F5C84; */ +body { color: #242424; } /* original #404040, #383838 */ +.wy-side-nav-search>a, .wy-side-nav-search .wy-dropdown>a { + color: #ffffff; +} /* original #fcfcfc */ +footer { color: #737373; } /* original gray=#808080*/ +footer span.commit code, footer span.commit .rst-content tt, .rst-content footer span.commit tt { + color: #737373; +} /* original gray=#808080*/ +.rst-content tt.literal, .rst-content tt.literal, .rst-content code.literal { + color: #AB2314; +} +/* Sidebar background */ +.wy-side-nav-search { background-color: #277CB4;} + +/* Same, but for pygments */ +.highlight .ch { color: #3E7A89; } /* #! line */ +.highlight .c1 { color: #3E7A89; } /* also comments */ +.highlight .nv { color: #AD3ECC; } /* variable */ +.highlight .gp { color: #B45608; } /* prompt character, $*/ +.highlight .si { color: #3975B1; } /* ${} variable text */ +.highlight .nc { color: #0C78A7; } + +/* Sphinx admonitions */ +/* warning */ +.wy-alert.wy-alert-warning .wy-alert-title, .rst-content .wy-alert-warning.note .wy-alert-title, .rst-content .attention .wy-alert-title, .rst-content .caution .wy-alert-title, .rst-content .wy-alert-warning.danger .wy-alert-title, .rst-content .wy-alert-warning.error .wy-alert-title, .rst-content .wy-alert-warning.hint .wy-alert-title, .rst-content .wy-alert-warning.important .wy-alert-title, .rst-content .wy-alert-warning.tip .wy-alert-title, .rst-content .warning .wy-alert-title, .rst-content .wy-alert-warning.seealso .wy-alert-title, .rst-content .admonition-todo .wy-alert-title, .rst-content .wy-alert-warning.admonition .wy-alert-title, .wy-alert.wy-alert-warning .rst-content .admonition-title, .rst-content .wy-alert.wy-alert-warning .admonition-title, .rst-content .wy-alert-warning.note .admonition-title, .rst-content .attention .admonition-title, .rst-content .caution .admonition-title, .rst-content .wy-alert-warning.danger .admonition-title, .rst-content .wy-alert-warning.error .admonition-title, .rst-content .wy-alert-warning.hint .admonition-title, .rst-content .wy-alert-warning.important .admonition-title, .rst-content .wy-alert-warning.tip .admonition-title, .rst-content .warning .admonition-title, .rst-content .wy-alert-warning.seealso .admonition-title, .rst-content .admonition-todo .admonition-title, .rst-content .wy-alert-warning.admonition .admonition-title { + background: #B15E16; } +/* important */ +.wy-alert.wy-alert-success .wy-alert-title, .rst-content .wy-alert-success.note .wy-alert-title, .rst-content .wy-alert-success.attention .wy-alert-title, .rst-content .wy-alert-success.caution .wy-alert-title, .rst-content .wy-alert-success.danger .wy-alert-title, .rst-content .wy-alert-success.error .wy-alert-title, .rst-content .hint .wy-alert-title, .rst-content .important .wy-alert-title, .rst-content .tip .wy-alert-title, .rst-content .wy-alert-success.warning .wy-alert-title, .rst-content .wy-alert-success.seealso .wy-alert-title, .rst-content .wy-alert-success.admonition-todo .wy-alert-title, .rst-content .wy-alert-success.admonition .wy-alert-title, .wy-alert.wy-alert-success .rst-content .admonition-title, .rst-content .wy-alert.wy-alert-success .admonition-title, .rst-content .wy-alert-success.note .admonition-title, .rst-content .wy-alert-success.attention .admonition-title, .rst-content .wy-alert-success.caution .admonition-title, .rst-content .wy-alert-success.danger .admonition-title, .rst-content .wy-alert-success.error .admonition-title, .rst-content .hint .admonition-title, .rst-content .important .admonition-title, .rst-content .tip .admonition-title, .rst-content .wy-alert-success.warning .admonition-title, .rst-content .wy-alert-success.seealso .admonition-title, .rst-content .wy-alert-success.admonition-todo .admonition-title, .rst-content .wy-alert-success.admonition .admonition-title { + background: #12826C; } +/* seealso, note, etc */ +.wy-alert.wy-alert-info .wy-alert-title, .rst-content .note .wy-alert-title, .rst-content .wy-alert-info.attention .wy-alert-title, .rst-content .wy-alert-info.caution .wy-alert-title, .rst-content .wy-alert-info.danger .wy-alert-title, .rst-content .wy-alert-info.error .wy-alert-title, .rst-content .wy-alert-info.hint .wy-alert-title, .rst-content .wy-alert-info.important .wy-alert-title, .rst-content .wy-alert-info.tip .wy-alert-title, .rst-content .wy-alert-info.warning .wy-alert-title, .rst-content .seealso .wy-alert-title, .rst-content .wy-alert-info.admonition-todo .wy-alert-title, .rst-content .wy-alert-info.admonition .wy-alert-title, .wy-alert.wy-alert-info .rst-content .admonition-title, .rst-content .wy-alert.wy-alert-info .admonition-title, .rst-content .note .admonition-title, .rst-content .wy-alert-info.attention .admonition-title, .rst-content .wy-alert-info.caution .admonition-title, .rst-content .wy-alert-info.danger .admonition-title, .rst-content .wy-alert-info.error .admonition-title, .rst-content .wy-alert-info.hint .admonition-title, .rst-content .wy-alert-info.important .admonition-title, .rst-content .wy-alert-info.tip .admonition-title, .rst-content .wy-alert-info.warning .admonition-title, .rst-content .seealso .admonition-title, .rst-content .wy-alert-info.admonition-todo .admonition-title, .rst-content .wy-alert-info.admonition .admonition-title { + background: #277CB4; } +/* error, danger */ +.rst-content .danger .admonition-title, .rst-content .danger .wy-alert-title, .rst-content .error .admonition-title, .rst-content .error .wy-alert-title, .rst-content .wy-alert-danger.admonition-todo .admonition-title, .rst-content .wy-alert-danger.admonition-todo .wy-alert-title, .rst-content .wy-alert-danger.admonition .admonition-title, .rst-content .wy-alert-danger.admonition .wy-alert-title, .rst-content .wy-alert-danger.attention .admonition-title, .rst-content .wy-alert-danger.attention .wy-alert-title, .rst-content .wy-alert-danger.caution .admonition-title, .rst-content .wy-alert-danger.caution .wy-alert-title, .rst-content .wy-alert-danger.hint .admonition-title, .rst-content .wy-alert-danger.hint .wy-alert-title, .rst-content .wy-alert-danger.important .admonition-title, .rst-content .wy-alert-danger.important .wy-alert-title, .rst-content .wy-alert-danger.note .admonition-title, .rst-content .wy-alert-danger.note .wy-alert-title, .rst-content .wy-alert-danger.seealso .admonition-title, .rst-content .wy-alert-danger.seealso .wy-alert-title, .rst-content .wy-alert-danger.tip .admonition-title, .rst-content .wy-alert-danger.tip .wy-alert-title, .rst-content .wy-alert-danger.warning .admonition-title, .rst-content .wy-alert-danger.warning .wy-alert-title, .rst-content .wy-alert.wy-alert-danger .admonition-title, .wy-alert.wy-alert-danger .rst-content .admonition-title, .wy-alert.wy-alert-danger .wy-alert-title { + background: #e31704; +} + +/* Generic admonition titles */ +.wy-alert-title, .rst-content .admonition-title { + background: #277CB4; } diff --git a/singlehtml/_static/tabs.css b/singlehtml/_static/tabs.css new file mode 100644 index 0000000..957ba60 --- /dev/null +++ b/singlehtml/_static/tabs.css @@ -0,0 +1,89 @@ +.sphinx-tabs { + margin-bottom: 1rem; +} + +[role="tablist"] { + border-bottom: 1px solid #a0b3bf; +} + +.sphinx-tabs-tab { + position: relative; + font-family: Lato,'Helvetica Neue',Arial,Helvetica,sans-serif; + color: #1D5C87; + line-height: 24px; + margin: 0; + font-size: 16px; + font-weight: 400; + background-color: rgba(255, 255, 255, 0); + border-radius: 5px 5px 0 0; + border: 0; + padding: 1rem 1.5rem; + margin-bottom: 0; +} + +.sphinx-tabs-tab[aria-selected="true"] { + font-weight: 700; + border: 1px solid #a0b3bf; + border-bottom: 1px solid white; + margin: -1px; + background-color: white; +} + +.sphinx-tabs-tab:focus { + z-index: 1; + outline-offset: 1px; +} + +.sphinx-tabs-panel { + position: relative; + padding: 1rem; + border: 1px solid #a0b3bf; + margin: 0px -1px -1px -1px; + border-radius: 0 0 5px 5px; + border-top: 0; + background: white; +} + +.sphinx-tabs-panel.code-tab { + padding: 0.4rem; +} + +.sphinx-tab img { + margin-bottom: 24 px; +} + +/* Dark theme preference styling */ + +@media (prefers-color-scheme: dark) { + body[data-theme="auto"] .sphinx-tabs-panel { + color: white; + background-color: rgb(50, 50, 50); + } + + body[data-theme="auto"] .sphinx-tabs-tab { + color: white; + background-color: rgba(255, 255, 255, 0.05); + } + + body[data-theme="auto"] .sphinx-tabs-tab[aria-selected="true"] { + border-bottom: 1px solid rgb(50, 50, 50); + background-color: rgb(50, 50, 50); + } +} + +/* Explicit dark theme styling */ + +body[data-theme="dark"] .sphinx-tabs-panel { + color: white; + background-color: rgb(50, 50, 50); +} + +body[data-theme="dark"] .sphinx-tabs-tab { + color: white; + background-color: rgba(255, 255, 255, 0.05); +} + +body[data-theme="dark"] .sphinx-tabs-tab[aria-selected="true"] { + border-bottom: 2px solid rgb(50, 50, 50); + background-color: rgb(50, 50, 50); +} diff --git a/singlehtml/_static/tabs.js b/singlehtml/_static/tabs.js new file mode 100644 index 0000000..48dc303 --- /dev/null +++ b/singlehtml/_static/tabs.js @@ -0,0 +1,145 @@ +try { + var session = window.sessionStorage || {}; +} catch (e) { + var session = {}; +} + +window.addEventListener("DOMContentLoaded", () => { + const allTabs = document.querySelectorAll('.sphinx-tabs-tab'); + const tabLists = document.querySelectorAll('[role="tablist"]'); + + allTabs.forEach(tab => { + tab.addEventListener("click", changeTabs); + }); + + tabLists.forEach(tabList => { + tabList.addEventListener("keydown", keyTabs); + }); + + // Restore group tab selection from session + const lastSelected = session.getItem('sphinx-tabs-last-selected'); + if (lastSelected != null) selectNamedTabs(lastSelected); +}); + +/** + * Key focus left and right between sibling elements using arrows + * @param {Node} e the element in focus when key was pressed + */ +function keyTabs(e) { + const tab = e.target; + let nextTab = null; + if (e.keyCode === 39 || e.keyCode === 37) { + tab.setAttribute("tabindex", -1); + // Move right + if (e.keyCode === 39) { + nextTab = tab.nextElementSibling; + if (nextTab === null) { + nextTab = tab.parentNode.firstElementChild; + } + // Move left + } else if (e.keyCode === 37) { + nextTab = tab.previousElementSibling; + if (nextTab === null) { + nextTab = tab.parentNode.lastElementChild; + } + } + } + + if (nextTab !== null) { + nextTab.setAttribute("tabindex", 0); + nextTab.focus(); + } +} + +/** + * Select or deselect clicked tab. If a group tab + * is selected, also select tab in other tabLists. + * @param {Node} e the element that was clicked + */ +function changeTabs(e) { + // Use this instead of the element that was clicked, in case it's a child + const notSelected = this.getAttribute("aria-selected") === "false"; + const positionBefore = this.parentNode.getBoundingClientRect().top; + const notClosable = !this.parentNode.classList.contains("closeable"); + + deselectTabList(this); + + if (notSelected || notClosable) { + selectTab(this); + const name = this.getAttribute("name"); + selectNamedTabs(name, this.id); + + if (this.classList.contains("group-tab")) { + // Persist during session + session.setItem('sphinx-tabs-last-selected', name); + } + } + + const positionAfter = this.parentNode.getBoundingClientRect().top; + const positionDelta = positionAfter - positionBefore; + // Scroll to offset content resizing + window.scrollTo(0, window.scrollY + positionDelta); +} + +/** + * Select tab and show associated panel. + * @param {Node} tab tab to select + */ +function selectTab(tab) { + tab.setAttribute("aria-selected", true); + + // Show the associated panel + document + .getElementById(tab.getAttribute("aria-controls")) + .removeAttribute("hidden"); +} + +/** + * Hide the panels associated with all tabs within the + * tablist containing this tab. + * @param {Node} tab a tab within the tablist to deselect + */ +function deselectTabList(tab) { + const parent = tab.parentNode; + const grandparent = parent.parentNode; + + Array.from(parent.children) + .forEach(t => t.setAttribute("aria-selected", false)); + + Array.from(grandparent.children) + .slice(1) // Skip tablist + .forEach(panel => panel.setAttribute("hidden", true)); +} + +/** + * Select grouped tabs with the same name, but no the tab + * with the given id. + * @param {Node} name name of grouped tab to be selected + * @param {Node} clickedId id of clicked tab + */ +function selectNamedTabs(name, clickedId=null) { + const groupedTabs = document.querySelectorAll(`.sphinx-tabs-tab[name="${name}"]`); + const tabLists = Array.from(groupedTabs).map(tab => tab.parentNode); + + tabLists + .forEach(tabList => { + // Don't want to change the tabList containing the clicked tab + const clickedTab = tabList.querySelector(`[id="${clickedId}"]`); + if (clickedTab === null ) { + // Select first tab with matching name + const tab = tabList.querySelector(`.sphinx-tabs-tab[name="${name}"]`); + deselectTabList(tab); + selectTab(tab); + } + }) +} + +if (typeof exports === 'undefined') { + exports = {}; +} + +exports.keyTabs = keyTabs; +exports.changeTabs = changeTabs; +exports.selectTab = selectTab; +exports.deselectTabList = deselectTabList; +exports.selectNamedTabs = selectNamedTabs; diff --git a/singlehtml/_static/term_role_formatting.css b/singlehtml/_static/term_role_formatting.css new file mode 100644 index 0000000..0b66095 --- /dev/null +++ b/singlehtml/_static/term_role_formatting.css @@ -0,0 +1,4 @@ +/* Make terms bold */ +a.reference span.std-term { + font-weight: bold; +} diff --git a/singlehtml/_static/togglebutton.css b/singlehtml/_static/togglebutton.css new file mode 100644 index 0000000..54a6787 --- /dev/null +++ b/singlehtml/_static/togglebutton.css @@ -0,0 +1,160 @@ +/** + * Admonition-based toggles + */ + +/* Visibility of the target */ +.admonition.toggle .admonition-title ~ * { + transition: opacity .3s, height .3s; +} + +/* Toggle buttons inside admonitions so we see the title */ +.admonition.toggle { + position: relative; +} + +/* Titles should cut off earlier to avoid overlapping w/ button */ +.admonition.toggle .admonition-title { + padding-right: 25%; + cursor: pointer; +} + +/* Hovering will cause a slight shift in color to make it feel interactive */ +.admonition.toggle .admonition-title:hover { + box-shadow: inset 0 0 0px 20px rgb(0 0 0 / 1%); +} + +/* Hovering will cause a slight shift in color to make it feel interactive */ +.admonition.toggle .admonition-title:active { + box-shadow: inset 0 0 0px 20px rgb(0 0 0 / 3%); +} + +/* Remove extra whitespace below the admonition title when hidden */ +.admonition.toggle-hidden { + padding-bottom: 0; +} + +.admonition.toggle-hidden .admonition-title { + margin-bottom: 0; +} + +/* hides all the content of a page until de-toggled */ +.admonition.toggle-hidden .admonition-title ~ * { + height: 0; + margin: 0; + opacity: 0; + visibility: hidden; +} + +/* General button style and position*/ +button.toggle-button { + /** + * Background and shape. By default there's no background + * but users can style as they wish + */ + background: none; + border: none; + outline: none; + + /* Positioning just inside the admonition title */ + position: absolute; + right: 0.5em; + padding: 0px; + border: none; + outline: none; +} + +/* Display the toggle hint on wide screens */ +@media (min-width: 768px) { + button.toggle-button.toggle-button-hidden:before { + content: attr(data-toggle-hint); /* This will be filled in by JS */ + font-size: .8em; + align-self: center; + } +} + +/* Icon behavior */ +.tb-icon { + transition: transform .2s ease-out; + height: 1.5em; + width: 1.5em; + stroke: currentColor; /* So that we inherit the color of other text */ +} + +/* The icon should point right when closed, down when open. */ +/* Open */ +.admonition.toggle button .tb-icon { + transform: rotate(90deg); +} + +/* Closed */ +.admonition.toggle button.toggle-button-hidden .tb-icon { + transform: rotate(0deg); +} + +/* With details toggles, we don't rotate the icon so it points right */ +details.toggle-details .tb-icon { + height: 1.4em; + width: 1.4em; + margin-top: 0.1em; /* To center the button vertically */ +} + + +/** + * Details-based toggles. + * In this case, we wrap elements with `.toggle` in a details block. + */ + +/* Details blocks */ +details.toggle-details { + margin: 1em 0; +} + + +details.toggle-details summary { + display: flex; + align-items: center; + cursor: pointer; + list-style: none; + border-radius: .2em; + border-left: 3px solid #1976d2; + background-color: rgb(204 204 204 / 10%); + padding: 0.2em 0.7em 0.3em 0.5em; /* Less padding on left because the SVG has left margin */ + font-size: 0.9em; +} + +details.toggle-details summary:hover { + background-color: rgb(204 204 204 / 20%); +} + +details.toggle-details summary:active { + background: rgb(204 204 204 / 28%); +} + +.toggle-details__summary-text { + margin-left: 0.2em; +} + +details.toggle-details[open] summary { + margin-bottom: .5em; +} + +details.toggle-details[open] summary .tb-icon { + transform: rotate(90deg); +} + +details.toggle-details[open] summary ~ * { + animation: toggle-fade-in .3s ease-out; +} + +@keyframes toggle-fade-in { + from {opacity: 0%;} + to {opacity: 100%;} +} + +/* Print rules - we hide all toggle button elements at print */ +@media print { + /* Always hide the summary so the button doesn't show up */ + details.toggle-details summary { + display: none; + } +} \ No newline at end of file diff --git a/singlehtml/_static/togglebutton.js b/singlehtml/_static/togglebutton.js new file mode 100644 index 0000000..215a7ee --- /dev/null +++ b/singlehtml/_static/togglebutton.js @@ -0,0 +1,187 @@ +/** + * Add Toggle Buttons to elements + */ + +let toggleChevron = ` + + + +`; + +var initToggleItems = () => { + var itemsToToggle = document.querySelectorAll(togglebuttonSelector); + console.log(`[togglebutton]: Adding toggle buttons to ${itemsToToggle.length} items`) + // Add the button to each admonition and hook up a callback to toggle visibility + itemsToToggle.forEach((item, index) => { + if (item.classList.contains("admonition")) { + // If it's an admonition block, then we'll add a button inside + // Generate unique IDs for this item + var toggleID = `toggle-${index}`; + var buttonID = `button-${toggleID}`; + + item.setAttribute('id', toggleID); + if (!item.classList.contains("toggle")){ + item.classList.add("toggle"); + } + // This is the button that will be added to each item to trigger the toggle + var collapseButton = ` + `; + + title = item.querySelector(".admonition-title") + title.insertAdjacentHTML("beforeend", collapseButton); + thisButton = document.getElementById(buttonID); + + // Add click handlers for the button + admonition title (if admonition) + admonitionTitle = document.querySelector(`#${toggleID} > .admonition-title`) + if (admonitionTitle) { + // If an admonition, then make the whole title block clickable + admonitionTitle.addEventListener('click', toggleClickHandler); + admonitionTitle.dataset.target = toggleID + admonitionTitle.dataset.button = buttonID + } else { + // If not an admonition then we'll listen for the button click + thisButton.addEventListener('click', toggleClickHandler); + } + + // Now hide the item for this toggle button unless explicitly noted to show + if (!item.classList.contains("toggle-shown")) { + toggleHidden(thisButton); + } + } else { + // If not an admonition, wrap the block in a
block + // Define the structure of the details block and insert it as a sibling + var detailsBlock = ` +
+ + ${toggleChevron} + ${toggleHintShow} + +
`; + item.insertAdjacentHTML("beforebegin", detailsBlock); + + // Now move the toggle-able content inside of the details block + details = item.previousElementSibling + details.appendChild(item) + item.classList.add("toggle-details__container") + + // Set up a click trigger to change the text as needed + details.addEventListener('click', (click) => { + let parent = click.target.parentElement; + if (parent.tagName.toLowerCase() == "details") { + summary = parent.querySelector("summary"); + details = parent; + } else { + summary = parent; + details = parent.parentElement; + } + // Update the inner text for the proper hint + if (details.open) { + summary.querySelector("span.toggle-details__summary-text").innerText = toggleHintShow; + } else { + summary.querySelector("span.toggle-details__summary-text").innerText = toggleHintHide; + } + + }); + + // If we have a toggle-shown class, open details block should be open + if (item.classList.contains("toggle-shown")) { + details.click(); + } + } + }) +}; + +// This should simply add / remove the collapsed class and change the button text +var toggleHidden = (button) => { + target = button.dataset['target'] + var itemToToggle = document.getElementById(target); + if (itemToToggle.classList.contains("toggle-hidden")) { + itemToToggle.classList.remove("toggle-hidden"); + button.classList.remove("toggle-button-hidden"); + } else { + itemToToggle.classList.add("toggle-hidden"); + button.classList.add("toggle-button-hidden"); + } +} + +var toggleClickHandler = (click) => { + // Be cause the admonition title is clickable and extends to the whole admonition + // We only look for a click event on this title to trigger the toggle. + + if (click.target.classList.contains("admonition-title")) { + button = click.target.querySelector(".toggle-button"); + } else if (click.target.classList.contains("tb-icon")) { + // We've clicked the icon and need to search up one parent for the button + button = click.target.parentElement; + } else if (click.target.tagName == "polyline") { + // We've clicked the SVG elements inside the button, need to up 2 layers + button = click.target.parentElement.parentElement; + } else if (click.target.classList.contains("toggle-button")) { + // We've clicked the button itself and so don't need to do anything + button = click.target; + } else { + console.log(`[togglebutton]: Couldn't find button for ${click.target}`) + } + target = document.getElementById(button.dataset['button']); + toggleHidden(target); +} + +// If we want to blanket-add toggle classes to certain cells +var addToggleToSelector = () => { + const selector = ""; + if (selector.length > 0) { + document.querySelectorAll(selector).forEach((item) => { + item.classList.add("toggle"); + }) + } +} + +// Helper function to run when the DOM is finished +const sphinxToggleRunWhenDOMLoaded = cb => { + if (document.readyState != 'loading') { + cb() + } else if (document.addEventListener) { + document.addEventListener('DOMContentLoaded', cb) + } else { + document.attachEvent('onreadystatechange', function() { + if (document.readyState == 'complete') cb() + }) + } +} +sphinxToggleRunWhenDOMLoaded(addToggleToSelector) +sphinxToggleRunWhenDOMLoaded(initToggleItems) + +/** Toggle details blocks to be open when printing */ +if (toggleOpenOnPrint == "true") { + window.addEventListener("beforeprint", () => { + // Open the details + document.querySelectorAll("details.toggle-details").forEach((el) => { + el.dataset["togglestatus"] = el.open; + el.open = true; + }); + + // Open the admonitions + document.querySelectorAll(".admonition.toggle.toggle-hidden").forEach((el) => { + console.log(el); + el.querySelector("button.toggle-button").click(); + el.dataset["toggle_after_print"] = "true"; + }); + }); + window.addEventListener("afterprint", () => { + // Re-close the details that were closed + document.querySelectorAll("details.toggle-details").forEach((el) => { + el.open = el.dataset["togglestatus"] == "true"; + delete el.dataset["togglestatus"]; + }); + + // Re-close the admonition toggle buttons + document.querySelectorAll(".admonition.toggle").forEach((el) => { + if (el.dataset["toggle_after_print"] == "true") { + el.querySelector("button.toggle-button").click(); + delete el.dataset["toggle_after_print"]; + } + }); + }); +} diff --git a/singlehtml/index.html b/singlehtml/index.html new file mode 100644 index 0000000..52515b5 --- /dev/null +++ b/singlehtml/index.html @@ -0,0 +1,1679 @@ + + + + + + + Introduction to CMake documentation + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + +
+ +
+
+
+ +
+
+
+
+ +
+

Introduction to CMake

+

CMake is a language-agnostic, cross-platform build tool and is nowadays the de facto standard, with large projects using it to reliably build, test, and deploy their codebases.

+

CMake is not a build system itself, but it generates another system’s build files.

+

In this workshop, you will learn

+
    +

  • Write a CMake build system for C/C++ and Fortran projects producing libraries and/or executables.

    • +

  • Run tests for your code with CTest.

    • +

  • Ensure your build system will work on different platforms.

    • +

  • (optional) Detect and use external dependencies in your project.

    • +

  • (optional) Safely and effectively build mixed-language projects (Python+C/C++, Python+Fortran, Fortran+C/C++)

    • +
+
+

Prerequisites

+

Before attending this workshop, please make sure that you have access to a computer with a compiler for your favorite programming language and a recent version of CMake.

+

If you have access to a supercomputer (e.g. a NAISS system) with a compute allocation you can use that during the workshop. Any questions on how to use a particular HPC resource should be directed to the appropriate support desk.

+

You can also use your own computer for this workshop, provided that it has the necessary tools installed.

+
    +

  • If you do not already have these installed, we recommend that you set up an isolated software environment using conda.

    • +

  • For Windows computers we recommend to use the Windows Subsystem for Linux (WSL). Detailed instructions can be found on the Setting up your system page.

    • +
+
+
+
+

Setting up your system

+

In order to follow this workshop, you will need access to compilers, Python and CMake. You can use an HPC cluster if you have access to one, but the instructions here cover how to install the prerequisites on your own computer.

+

We also show how you can use Binder to run in the cloud.

+

These instructions are based on installing compilers and CMake via the Conda package and environment manager, as it provides a convenient way to install binary packages in an isolated software environment.

+
+

For Windows users

+

We strongly recommend to use (and install if necessary) the Windows Subsystem for Linux (WSL) as it is a powerful tool which will likely be useful also after the workshop. Inside WSL you will need Python 3 and the conda environment manager. A useful guide to doing this is found at HERE. The installation of the required dependencies in a WSL terminal is documented below.

+
+
+

For MacOS and Linux users

+

MacOS and Linux users can simply open a terminal and install +Miniconda:

+
    +

  • For MacOS see HERE.

    • +

  • For Linux see HERE.

    • +
+
+
+

Creating an environment and installing packages

+

Once you have conda installed (and WSL if you’re using Windows OS) you can use the environment.yml file to install dependencies.

+

First save it to your hard drive by clicking the link, and then in a terminal navigate to where you saved the file and type:

+
conda env create -f environment.yml
+
+
+

You then need to activate the new environment by:

+
conda activate intro-to-cmake
+
+
+

Now you should have CMake, compilers, Python and a few other packages installed!

+
+
+
+
+
+

From sources to executables

+
+

Questions

+
    +

  • How do we use CMake to compile source files to executables?

    • +
+
+
+

Objectives

+
    +

  • Learn what tools are available in the CMake suite.

    • +

  • Learn how to write a simple CMakeLists.txt.

    • +

  • Learn the difference between build systems, build tools, and build system generator.

    • +

  • Learn to distinguish between configuration, generation, and **build* time.

    • +
+
+
+

What is CMake and why should you care?

+

Software is everywhere and so are build systems. Whenever you run a piece of software, anything from calendar apps to computationally-intensive programs, there was a build system involved in transforming the plain-text source code into binary files that could run on the device you are using.

+

CMake is a build-system generator: it provides a family of tools and a domain-specific language (DSL) to describe what the build system should achieve when the appropriate build tools are invoked. The DSL is platform- and compiler-agnostic: you can reuse the same CMake scripts to obtain native build systems on any platform.

+
+_images/build-systems.svg +
+

On GNU/Linux, the native build system will be a collection of Makefile-s. The make build tool uses these Makefile-s to transform sources to executables and libraries.

+
+

CMake abstracts the process of generating the Makefile-s away into a generic DSL.

+
+
+
+

A CMake-based build system:

+
    +

  • can bring your software closer to being platform- and compiler-agnostic.

    • +

  • has good support within many integrated development environments (IDEs).

    • +

  • automatically tracks and propagates internal dependencies in your project.

    • +

  • is built on top of well-maintained functionality for automated dependency detection.

    • +
+
+
+

Hello, CMake!

+ +
+
+

Important issues for the CMakeLists.txt file

+
    +

  1. Any CMake build system will invoke the following commands in its root +CMakeLists.txt:

    + + + + +
    2. +

  2. The case of CMake commands does not matter: the DSL is case-insensitive. However, the plain-text files that CMake parses must be called CMakeLists.txt and the case matters! The variable names are also case sensitive!

    3. +

  3. The command to add executables to the build system is add_executable:

    + +
    4. +

  4. Using CMake you can abstract the generation of the build system and also the invocation of the build tools.

    5. +
+
+

Put your CMakeLists.txt under version control

+

All CMake-related files will evolve together with your codebase. It’s a good idea to put them under version control. On the contrary, any of the generated native build-system files, e.g. Makefile-s, should not be version-controlled.

+
+ +
+
+

A complete toolchain

+

The family of tools provided with CMake offers a complete toolchain to manage the development cycle: from sources to build artifacts, testing, and deployment. +We refer to these stages as CMake times and each tool is appropriate at a specific time. In this workshop, we will discuss:

+
    +

  • CMake time or configure time. This is the stage when cmake is invoked to parse the CMakeLists.txt in your project, configure and generate the build system.

    • +

  • Build time. This is handled by the native build tools, but, as we have seen, these can be effectively wrapped by cmake itself.

    • +

  • CTest time or test time. At this stage, you will test your build artifacts.

    • +
+
+_images/cmake-times.jpg +
+

You can manage all these stages of a software project’s lifetime with tools provided by CMake. This figure shows all these stages (times) and which tool is appropriate for each. This figure is reproduced from CMake Cookbook and is licensed under the terms of the CC-BY-SA.

+
+
+
+
+

Producing libraries

+

CMake can of course be used to produce libraries as well as executables. The relevant command is add_library:

+ +

You can link libraries into executables with target_link_libraries:

+ +
+

Executables and libraries are targets

+

We will encounter the term target repeatedly. In CMake, a target is any object given as first argument to add_executable or add_library. Targets are the basic atom in CMake. Whenever you will need to organize complex projects, think in terms of its targets and their mutual dependencies.

+

The whole family of CMake commands target_* can be used to express chains of dependencies and is much more effective than keeping track of state with variables. We will clarify these concepts in Target-based build systems with CMake.

+
+
+

Exercise 1: Producing libraries

+
+

You can find a scaffold project in the content/code/01_libraries-cxx folder.

+
    +

  1. Write a CMakeLists.txt to compile the source files Message.hpp and Message.cpp into a library. DO NOT specify the type of library, shared or static, explicitly.

    2. +

  2. Add an executable from the hello-world.cpp source file.

    3. +

  3. Link the library into the executable.

    4. +
+

A working solution is in the solution subfolder.

+
+

What kind of library did you get? Static or shared?

+
+
+

Keypoints

+
    +

  • CMake is a build system generator, not a build system.

    • +

  • You write CMakeLists.txt to describe how the build tools will create artifacts from sources.

    • +

  • You can use the CMake suite of tools to manage the whole lifetime: from source files to tests to deployment.

    • +

  • The structure of the project is mirrored in the build folder.

    • +
+
+
+
+
+

CMake syntax

+
+

Questions

+
    +

  • How can we achieve more control over the build system generated by CMake?

    • +

  • Is it possible to let the user decide what to generate?

    • +
+
+
+

Objectives

+
    +

  • Learn how to define variables with set and use them with the ${} +operator for variable references.

    • +

  • Learn the syntax for conditionals in CMake: if - elseif - else - endif

    • +

  • Learn the syntax for loops in CMake: foreach

    • +

  • Learn how CMake structures build artifacts.

    • +

  • Learn how to print helpful messages.

    • +

  • Learn how to handle user-facing options: option and the role of CMake cache.

    • +
+
+

CMake offers a domain-specific language (DSL) to describe how to generate a build system native to the specific platform you might be running on. In this episode, we will get acquainted with its syntax.

+
+

The CMake DSL

+

Remember that the DSL is case-insensitive. We will now have a look at its main elements.

+
+

Variables

+

These are either CMake- or user-defined variables. You can obtain the list of CMake-defined variables with the command:

+
$ cmake --help-variable-list
+
+
+

You can create a new variable with the set command:

+ +

Variables in CMake are always of string type, but certain commands can interpret them as other types. If you want to declare a list variable, you will have to provide it as a ;-separated string. Lists can be manipulated with the list family of commands.

+

You can inspect the value of any variable by dereferencing it with the ${} operator, as in bash shell. For example, the following snippet sets the content of hello variable and then prints it:

+
set(hello "world")
+message("hello ${hello}")
+
+
+

Two notes about variable references:

+
    +

  • if the variable within the ${} operator is not set, you will get an empty string.

    • +

  • you can nest variable references: ${outer_${inner_variable}_variable}. They will be evaluated from the inside out.

    • +
+

One of the most confusing aspects in CMake is the scoping of variables. There are three variable scopes in the DSL:

+
    +

  • Function: In effect when a variable is set within a function, the variable will be visible within the function, but not outside.

    • +

  • Directory: In effect when processing a CMakeLists.txt in a directory, variables in the parent folder will be available, but any that is set in the current folder will not be propagated to the parent.

    • +

  • Cache: These variables are persistent across calls to cmake and available to all scopes in the project. Modifying a cache variable requires using a special form of the set function:

    + +
    • +
+

Here is a list of few CMake-defined variables:

+
    +

  • PROJECT_BINARY_DIR. This is the build folder for the project.

    • +

  • PROJECT_SOURCE_DIR. This is the location of the root CMakeLists.txt in the project.

    • +

  • CMAKE_CURRENT_LIST_DIR. This is the folder for the CMakeLists.txt currently being processed.

    • +
+

Help on a specific built-in variable can be obtained with:

+
$ cmake --help-variable PROJECT_BINARY_DIR
+
+
+
+
+

Commands

+

These are provided by CMake and are essential building blocks of the DSL, as they allow you to manipulate variables. They include control flow constructs and the target_* family of commands.

+

You can find a complete list of available commands with:

+
$ cmake --help-command-list
+
+
+

Functions and macros are built on top of the basic built-in commands and are either CMake- or user-defined. These prove useful to avoid repetition in your CMake scripts.

+

The difference between a function and a macro is their scope:

+
    +

  • Functions have their own scope: variables defined inside a function are not propagated back to the caller.

    • +

  • Macros do not have their own scope: variables from the parent scope can be modified and new variables in the parent scope can be set.

    • +
+

Help on a specific built-in command, function or macro can be obtained with:

+
$ cmake --help-command target_link_libraries
+
+
+
+
+

Modules

+

These are collections of functions and macros and are either CMake- or user-defined. CMake comes with a rich ecosystem of modules and you will probably write a few of your own to encapulate frequently used functions or macros in your CMake scripts.

+

You will have to include the module to use its contents, for example:

+
include(CMakePrintHelpers)
+
+
+

The full list of built-in modules is available with:

+
$ cmake --help-module-list
+
+
+

Help on a specific built-in module can be obtained with:

+
$ cmake --help-module CMakePrintHelpers
+
+
+
+
+
+

Flow control

+

The if and foreach commands are available as flow control constructs in the CMake DSL and you are surely familiar with their use in other programming languages.

+

Since all variables in CMake are strings, the syntax for if and foreach appears in a few different variants.

+ +

The truth value of the conditions in the if and elseif blocks is determined by boolean operators. In the CMake DSL:

+
    +

  • True is any expression evaluating to: 1, ON, TRUE, YES, and +Y.

    • +

  • False is any expression evaluating to: 0, OFF, FALSE, NO, +N, IGNORE, and NOTFOUND.

    • +
+

CMake offers boolean operator for string comparisons, such as STREQUAL for string equality, and for version comparisons, such as VERSION_EQUAL.

+
+

Variable expansions in conditionals

+

The if command expands the contents of variables before evaluating their +truth value. See official documentation for further details.

+
+
+

Exercise 2: Conditionals in CMake

+

Modify the CMakeLists.txt from the previous exercise to build either a static or a shared library depending on the value of the boolean MAKE_SHARED_LIBRARY:

+
    +

  1. Define the MAKE_SHARED_LIBRARY variable.

    2. +

  2. Write a conditional checking the variable. In each branch call add_library appropriately.

    3. +
+
+

You can find a scaffold project in the content/code/02_conditionals-cxx folder. A working solution is in the solution subfolder.

+
+
+

You can perform the same operation on a collection of items with foreach:

+ +

The list of items is either space- or ;-separated. break() and continue() are also available.

+ +
+
+

Printing messages

+

You will most likely have to engage in debugging your CMake scripts at some point. Print-based debugging is the most effective way and the main workhorse for this will be the message command:

+ + +

It should be noted that message can be a bit awkward to work with, especially when you want to print the name and value of a variable. Including the built-in module CMakePrintHelpers will make your life easier when debugging, since it provides the cmake_print_variables function:

+ +
+

Keypoints

+
    +

  • CMake offers a full-fledged DSL which empowers you to write complex CMakeLists.txt.

    • +

  • Variables have scoping rules.

    • +

  • The structure of the project is mirrored in the build folder.

    • +
+
+
+
+
+

Probing compilation, linking, and execution

+
+

Questions

+
    +

  • How can you add custom steps to your build system with CMake?

    • +
+
+
+

Objectives

+
    +

  • Learn how and when to use execute_process

    • +

  • Learn how to use add_custom_command with targets.

    • +

  • Learn how to test compilation, linking, and execution.

    • +
+
+

CMake lets you run arbitrary commands at any stage in the project lifecycle. +This is yet another mechanism for fine-grained customization and we will discuss +some of the options in this episode.

+
+

Running custom commands at configure-time

+

The most straightforward method is to explicitly run one (or more) child +process(es) when invoking the cmake command. This is achieved with the +execute_process command.

+ +

It is important to note that any command invoked through execute_process +will only be run at configure-time, i.e. when running the cmake +command. You should not rely on execute_process to update any artifacts at +build-time.

+
+

Exercise xx: Find a Python module

+

In this exercise, we’ll use execute_process +to check whether the cffi Python module is +installed in your environment. On the command line, you would do:

+
$ python -c "import cffi; print(cffi.__version__)"
+
+
+

Your goal is to replicate the same in CMake. +The scaffold code is in content/code/xx_find_cffi. +You will have to modify the call to execute_process to run the command above.

+

A working example is in the solution subfolder.

+
+

Note the use of find_package(Python REQUIRED) to obtain the python +executable. CMake comes with many modules dedicated to the detection of +dependencies, such as Python. These are conventionally called +Find<dependency>.cmake and you can inspect their documentation with:

+
$ cmake --help-module FindPython | more
+
+
+

We will revisit uses of find_package later on in Finding and using dependencies.

+
+
+

Custom commands for your targets

+

As mentioned, the main problem of execute_process is that it will run a +command at configure-time, when the cmake command is first invoked. +It is thus not a viable alternative if we intend to perform some specific +actions depending on targets or make the result of the custom commands a +dependency for other targets. +Both cases have real-world examples, such as when using automatically generated +code. The CMake command add_custom_command can be used in some of this +instances.

+ +
+

Exercise 18: Before and after build

+

We want to perform some action before and after building a target, in this case a Fortran executable:

+
    +

  • Before building, we want to read the link line, as produced by CMake, and +echo it to standard output. We use the echo-file.py Python script.

    • +

  • After building, we want to check the size of the static allocations in the +binary, by invoking the size command. We use the static-size.py Python script.

    • +
+

The scaffold code is in content/code/xx_pre_post-f.

+
    +

  1. Add CMake commands to build the example executable from the Fortran +sources. Find the text file with the link line under the build folder. +Hint: have a look in CMakeFiles and keep in mind the name you gave to +the target.

    2. +

  2. Call add_custom_command with PRE_LINK to invoke the echo-file.py Python script.

    3. +

  3. Call add_custom_command with POST_BUILD to invoke the static-size.py Python script.

    4. +
+

A working example is in the solution subfolder.

+
+
+
+

Testing compilation, linking, and execution

+

We also want to be able to run checks on our compilers and linkers. Or check whether a certain library can be used correctly before attempting to build our own artifacts. +CMake provides modules and commands for these purposes:

+
    +

  • Check<LANG>CompilerFlag providing the check_<LANG>_compiler_flag +function, to check whether a compiler flag is valid for the compiler in use.

    • +

  • Check<LANG>SourceCompiles providing the check_<LANG>_source_compiles. +Which check whether a given source file compiles with the compiler in use.

    • +

  • Check<LANG>SourceRuns providing the check_<LANG>_source_runs, to make +sure that a given source snippet compiles, links, and runs.

    • +
+

In all cases, <LANG> can be one of CXX, C or Fortran.

+
+

Exercise 19: Check that a compiler accepts a compiler flag

+

Compilers evolve: they add and/or remove flags and sometimes you will face +the need to test whether some flags are available before using them in your +build.

+

The scaffold code is in content/code/xx_check_compiler_flag.

+
    +

  1. Implement a CMakeLists.txt to build an executable from the +asan-example.cpp source file.

    2. +

  2. Check that the address sanitizer flags are available with +check_cxx_compiler_flag. The flags to check are -fsanitize=address +-fno-omit-frame-pointer. Find the command signature with:

    +
    $ cmake --help-module CMakeCXXCompilerFlag
+
    +
    +
    3. +

  3. If the flags do work, add them to the those used to compile the executable +target with target_compile_options.

    4. +
+

A working example is in the solution subfolder.

+
+
+

Exercise 20: Testing runtime capabilities

+

Testing that some features will work properly for your code requires not only +compiling an object files, but also linking an executable and running it +successfully.

+

The scaffold code is in content/code/xx_check_source_runs.

+
    +

  1. Create an executable target from the source file use-uuid.cpp.

    2. +

  2. Add a check that linking against the library produces working executables. +Use the following C code as test:

    +
    #include <uuid/uuid.h>
+
+int main(int argc, char * argv[]) {
+  uuid_t uuid;
+  uuid_generate(uuid);
+  return 0;
+}
+
    +
    +

    check_c_source_runs requires the test source code to be passed in as +a string. Find the command signature with:

    +
    $ cmake --help-module CheckCSourceRuns
+
    +
    +
    3. +

  3. If the test is successful, link executable target against the UUID +library: use the PkgConfig::UUID target as argument to +target_link_libraries.

    4. +
+

A working example is in the solution subfolder.

+
+
+

Keypoints

+
    +

  • You can customize the build system by executing custom commands.

    • +

  • CMake offers commands to probe compilation, linking, and execution.

    • +
+
+
+
+
+

Finding and using dependencies

+
+

Questions

+
    +

  • How can I use CMake to detect and use the dependencies of my project?

    • +
+
+
+

Objectives

+
    +

  • Learn how to use find_package.

    • +

  • Learn what other detection alternatives exist.

    • +
+
+

The vast majority of software projects do not happen in a vacuum: they will have +dependencies on existing frameworks and libraries. Good documentation will +instruct your users to ensure that these are satisfied in their programming +environment. The build system is the appropriate place to check that these +preconditions are met and that your project can be built correctly. +In this episode, we will show you few examples of how to detect and use +dependencies in your CMake build system.

+
+

Finding dependencies

+

CMake offers a family of commands to find artifacts installed on your system:

+
    +

  • find_file to retrieve the full path to a file.

    • +

  • find_library to find a library, shared or static.

    • +

  • find_package to find and load settings from an external project.

    • +

  • find_path to find the directory containing a file.

    • +

  • find_program to find an executable.

    • +
+

The workhorse of dependency discovery is find_package, which will cover your +needs in almost all use cases.

+ +

We cannot stress this enough: you should only use the other commands in the +find_ family in very special, very narrow circumstances. Why so?

+
    +

  1. For a large selection of common dependencies, the Find<PackageName>.cmake +modules shipped with CMake work flawlessly and are maintained by the CMake +developers. This lifts the burden of programming your own dependency +detection tricks.

    2. +

  2. find_package will set up imported targets: targets defined outside +your project that you can use with your own targets. The properties on +imported targets defines usage requirements for the dependencies. A command +such as:

    +
    target_link_libraries(your-target
+  PUBLIC
+    imported-target
+  )
+
    +
    +

    will set compiler flags, definitions, include directories, and link libraries +from imported-target to your-target and to all other targets in +your project that will use your-target.

    +
    3. +
+

These two points simplify enormously the burden of dependency detection and +consistent usage within a multi-folder project.

+
+

Using find_package

+

When attempting dependency detection with find_package, you should make sure that:

+
    +

  • A Find<PackageName>.cmake module exists,

    • +

  • Which components, if any, it provides, and

    • +

  • What imported targets it will set up.

    • +
+

A complete list of Find<PackageName>.cmake can be found from the command-line interface:

+
$ cmake --help-module-list | grep "Find"
+
+
+ +
+

Exercise 23: Using MPI

+

In this exercise, you will attempt compiling a “Hello, world” program that +uses the message passing interface (MPI).

+
    +

  1. Check whether a FindMPI.cmake module exists in the built-in module +library.

    2. +

  2. Get acquainted with its components and the variables and imported targets +it defines.

    3. +
+
+

The scaffold project is in content/code/xx_mpi-cxx.

+
    +

  1. Compile the source file to an executable.

    2. +

  2. Link against the MPI imported target.

    3. +

  3. Invoke a verbose build and observe how CMake compiles and links.

    4. +
+

A working example is in the solution subfolder.

+
+
+
+
+

Alternatives: Config scripts and pkg-config

+

What to do when there is no built-in Find<PackageName>.cmake module for a package you depend on? +The package developers might be already prepared to help you out:

+
    +

  • They ship the CMake-specific file <PackageName>Config.cmake which +describes how the imported target should be made for their package. +In this case, you need to point CMake to the folder containing the Config file using the +special <PackageName>_DIR variable:

    +
    $ cmake -S. -Bbuild -D<PackageName>_DIR=/folder/containing/<PackageName>Config.cmake
+
    +
    +
    • +

  • They include a .pc file, which, on Unix-like platforms, can be detected +with the pkg-config utility. You can then leverage pkg-config through CMake:

    +
    # find pkg-config
+find_package(PkgConfig REQUIRED)
+# ask pkg-config to find the UUID library and prepare an imported target
+pkg_search_module(UUID REQUIRED uuid IMPORTED_TARGET)
+# use the imported target
+if(TARGET PkgConfig::UUID)
+  message(STATUS "Found libuuid")
+endif()
+
    +
    +

    This was the strategy adopted in Probing compilation, linking, and execution when testing the use of the +UUID library.

    +
    • +
+
+

Keypoints

+
    +

  • CMake has a rich ecosystem of modules for finding software dependencies. They are called Find<package>.cmake.

    • +

  • The Find<package>.cmake modules are used through find_package(<package>).

    • +

  • You can also use the classic Unix tool pkg-config to find software +dependencies, but this is not as robust as the CMake-native +Find<package> modules.

    • +
+
+

Footnotes

+ +
+
+
+
+

Target-based build systems with CMake

+
+

Questions

+
    +

  • How can we handle more complex projects with CMake?

    • +

  • What exactly are targets in the CMake domain-specific language (DSL)?

    • +
+
+
+

Objectives

+
    +

  • Learn that the basic elements in CMake are not variables, but targets.

    • +

  • Learn about properties of targets and how to use them.

    • +

  • Learn how to use visibility levels to express dependencies between targets.

    • +

  • Learn how to work with projects spanning multiple folders.

    • +

  • Learn how to handle multiple targets in one project.

    • +
+
+

Real-world projects require more than compiling a few source files into executables and/or libraries. In most cases, you will come to projects comprising hundreds of source files sprawling in a complex source tree.

+

With the advent of CMake 3.0, also known as Modern CMake, there has been a significant shift that the CMake domain-specific language (DSL) is structured, which can help you keep the complexity of the build system in check. Rather than relying on variables to convey information in a project, all what you need in modern CMake is targets and properties.

+
+

Targets

+

A target is the basic element in the CMake DSL, which can be declared by either add_executable or add_library. Any target has a collection of properties, which define:

+
    +

  • how the build artifact should be produced,

    • +

  • how it should be used by other targets in the project that depend on it.

    • +
+
+_images/target.svg +
+

In CMake, the five most used commands used to handle targets are:

+
    +

  • target_sources, specifying which source files to use when compiling a target.

    • +

  • target_compile_options, specifying which compiler flags to use.

    • +

  • target_compile_definitions, specifying which compiler definitions to use.

    • +

  • target_include_directories, specifying which directories will contain header (for C/C++) and module (for Fortran) files.

    • +

  • target_link_libraries, specifying which libraries to link into the current target.

    • +
+

There are additional commands in the target_* family:

+
$ cmake --help-command-list | grep "^target_"
+
+target_compile_definitions
+target_compile_features
+target_compile_options
+target_include_directories
+target_link_directories
+target_link_libraries
+target_link_options
+target_precompile_headers
+target_sources
+
+
+
+
+

Visibility levels

+

Why it is robust to use targets and properties than using variables? Given a target tgtX, we can invoke one command in the target_* family as follows.

+
target_link_libraries(tgtX
+  PRIVATE tgt1
+  INTERFACE tgt2
+  PUBLIC tgt3
+  )
+
+
+
+_images/target_inheritance.svg +
+

Properties on targets have varied visibility levels, which determine how CMake should propagate them between interdependent targets.

+
+
+
+

Understanding visibility levels

+

Visibility levels PRIVATE, PUBLIC, or INTERFACE are very powerful and herein we will briefly demonstrate their difference.

+

In this demo, we split the source code into 3 libraries and all files are available in the content/code/xx_visibility-levels/ folder.

+
.
+├── CMakeLists.txt
+├── greeting
+│   ├── greeting.cpp
+│   └── greeting.hpp
+├── hello_world
+│   ├── hello_world.cpp
+│   └── hello_world.hpp
+├── main.cpp
+└── world
+        ├── world.cpp
+        └── world.hpp
+
+
+
+

In this source code, the main function links to greeting which links to hello_world which links to world.

+ +

Take a look at the CMakeLists.txt:

+
 1cmake_minimum_required(VERSION 3.14)
+ 2
+ 3project(example LANGUAGES CXX)
+ 4
+ 5
+ 6add_library(world)
+ 7target_sources(world
+ 8  PUBLIC
+ 9    world/world.hpp
+10  PRIVATE
+11    world/world.cpp
+12  )
+13target_include_directories(world
+14  PUBLIC
+15    world
+16  )
+17# target_compile_definitions(world PRIVATE "MY_DEFINITION")
+18
+19
+20add_library(hello_world)
+21target_sources(hello_world
+22  PUBLIC
+23    hello_world/hello_world.hpp
+24  PRIVATE
+25    hello_world/hello_world.cpp
+26  )
+27target_include_directories(hello_world
+28  PUBLIC
+29    hello_world
+30  )
+31
+32# hello_world depends on world
+33target_link_libraries(hello_world PRIVATE world)
+34
+35
+36add_library(greeting)
+37target_sources(greeting
+38  PUBLIC
+39    greeting/greeting.hpp
+40  PRIVATE
+41    greeting/greeting.cpp
+42  )
+43target_include_directories(greeting
+44  PUBLIC
+45    greeting
+46  )
+47
+48# greeting depends on hello_world
+49target_link_libraries(greeting PRIVATE hello_world)
+50
+51
+52add_executable(example main.cpp)
+53
+54# example depends on greeting
+55target_link_libraries(example PRIVATE greeting)
+
+
+
+

Testing the 3 different visibility levels

+
    +

  1. Browse, configure, build, and run the code.

    2. +

  2. Uncomment the highlighted line (line 17) with target_compile_definitions, configure into a fresh folder, and build using the commands below. You will see that the definition is used in world.cpp but nowhere else.

    +
    $ cmake -S. -Bbuild_private
+$ cmake --build build_private
+
    +
    +
    3. +

  3. Change the definition to PUBLIC, configure into a fresh folder, and build. You will see that the definition is used both in world.cpp and hello_world.cpp.

    +
    $ cmake -S. -Bbuild_public
+$ cmake --build build_public
+
    +
    +
    4. +

  4. Then change the definition to INTERFACE, configure into a fresh folder, and build. You will see that the definition is used only in hello_world.cpp but not in world.cpp.

    +
    $ cmake -S. -Bbuild_interface
+$ cmake --build build_interface
+
    +
    +
    5. +
+
+
+
+

Properties

+

CMake lets you set properties at many different levels of visibility across the project:

+
    +

  • Global scope. These are equivalent to variables set in the root CMakeLists.txt. Their use is, however, more powerful as they can be set from any leaf CMakeLists.txt.

    • +

  • Directory scope. These are equivalent to variables set in a given leaf CMakeLists.txt.

    • +

  • Target. These are the properties set on targets that we discussed above.

    • +

  • Test.

    • +

  • Source files. For example, compiler flags.

    • +

  • Cache entries.

    • +

  • Installed files.

    • +
+

For a complete list of properties known to CMake:

+
$ cmake --help-properties | less
+
+
+

You can get the current value of any property with get_property and set the value of any property with set_property.

+
+
+

Multiple folders

+

In the code example about the visibility levels, we have split a project into three folders and libraries but we kept one CMakeLists.txt. As the project grows, this becomes impractical for humans (the CMake computer overlords will not mind) and maintenance becomes easier if we split the CMake configuration into multiple CMakeLists.txt with the help of add_subdirectory. Our goal is to have a CMakeLists.txt as close as possible to the source files.

+
project/
+├── CMakeLists.txt           <--- Root
+├── external
+│   ├── CMakeLists.txt       <--- Leaf at level 1
+└── src
+    ├── CMakeLists.txt       <--- Leaf at level 1
+    ├── evolution
+    │   ├── CMakeLists.txt   <--- Leaf at level 2
+    ├── initial
+    │   ├── CMakeLists.txt   <--- Leaf at level 2
+    ├── io
+    │   ├── CMakeLists.txt   <--- Leaf at level 2
+    └── parser
+        └── CMakeLists.txt   <--- Leaf at level 2
+
+
+

Each folder in a multi-folder project will contain a CMakeLists.txt: a source tree with one root and many leaves.

+
    +

  • The root CMakeLists.txt will contain the invocation of the project command: variables and targets declared in the root have effectively global scope.

    • +

  • The PROJECT_SOURCE_DIR will point to the folder containing the root CMakeLists.txt.

    • +

  • In order to move between the root and a leaf or between leaves, you will use the add_subdirectory command.

    • +
+

Typically, you only need to pass the first argument: the folder within the build tree will be automatically computed by CMake. We can declare targets at any level, not necessarily the root: a target is visible at the level at which it is declared and all higher levels.

+
+

Exercise yy: Cellular automata

+

Let’s work with a project spanning multiple folders. We will implement a relatively simple code to compute and print to screen elementary cellular automata. We separate the sources into src and external to simulate a nested project which reuses an external project.

+

Your goal is to:

+
    +
    • +

    1. Build the main executable at content/code/yy_automata-cxx/ for C++ and content/code/yy_automata-f/ for Fortran.

      2. +
    +
    • +
    • +

    1. Where are the obtained executables located in the build tree? Remember that CMake generates a build tree mirroring the source tree.

      2. +
    +
    • +

  • 3. The executable will accept 3 arguments: the length, number of steps, and +automaton rule. You can run it with:

    +
    $ automata 40 5 30
+
    +
    +

    The output will be:

    +
    length: 40
+number of steps: 5
+rule: 30
+                    *
+                   ***
+                  **  *
+                 ** ****
+                **  *   *
+               ** **** ***
+
    +
    +
    • +
+
+ +
+

Keypoints

+
    +

  • Using targets, you can achieve granular control over how artifacts are built and how their dependencies are handled.

    • +

  • Compiler flags, definitions, source files, include folders, link libraries, and linker options are properties of a target.

    • +

  • Avoid using variables to express dependencies between targets: use visibility levels PRIVATE, INTERFACE, PUBLIC and let CMake figure out the details.

    • +

  • To keep the complexity of the build system at a minimum, each folder in a multi-folder project should have its own CMake script.

    • +
+
+
+
+
+

Tips and tricks using CMake

+
+

Objectives

+
    +

  • Learn what tools exist to structure projects as they grow.

    • +

  • Discuss the value of localizing scope and avoiding side effects.

    • +

  • Recognize more maintainable and less maintainable patterns.

    • +
+
+

As projects grow, code structures get more complicated: more possibilities, more corner cases, more options to users, and more developers who are contributing and may not oversee the entire CMake structure. In this episode we will mention a couple of tools to bring some structure and flow-control into larger projects. [1]

+
+

Listing sources or globbing them

+

In all our examples we have listed all sources when defining targets.

+

In CMake, you can glob patters (e.g. all files that end with *.cpp) without listing them explicitly. This is tempting, but we advice against doing this. The reason is that CMake cannot guarantee correct tracking dependency changes when you add files after you have configured. [2]

+

Listing files explicitly also allows to grep for them in the CMake code to see where a modification is likely needed. This can help colleagues in our projects who are not familiar with CMake to find out where to change things.

+
+
+

Options and flow control

+

You may want to give users the possibility to decide whether they want to enable an option or not.

+
# by default this one will be ON
+option(ENABLE_MPI "Configure for MPI parallelization" ON)
+
+if(ENABLE_MPI)
+  find_package(MPI REQUIRED COMPONENTS Fortran)
+else()
+  message(STATUS "no problem, building without MPI")
+endif()
+
+
+

Now the users can decide:

+
$ cmake -S. -Bbuild -DENABLE_MPI=OFF
+
+
+
+
+

Organizing files into modules

+

Modules are collections of functions and macros and are either CMake- or user-defined. CMake comes with a rich ecosystem of modules and you will probably write a few of your own to encapsulate frequently used functions or macros in your CMake scripts.

+

You can collect related CMake-code into a file called my_lengthy_code.cmake and then include it in another CMake code as shown below. This can help organizing projects that are growing out of hand and separate concerns.

+
include(my_lengthy_code)
+
+
+
+
+

Variables vs. targets

+

In Target-based build systems with CMake we have motivated why targets are preferable over variables.

+

When you portion your project into modules, then variable declaration impose an order and the risk is high that somebody will not know about the implicit order and reorder modules one day and the behavior will change.

+

Try to minimize the use of user-defined variables. They can point to a sub-optimal solution and a better, more state-less, declarative, solution may exist.

+
+
+

Functions and macros

+

Functions and macros are built on top of the basic built-in commands and are either CMake- or user-defined. These prove useful to avoid repetition in your CMake scripts. The difference between a function and a macro is their scope:

+
    +

  1. Functions have their own scope: variables defined inside a function are not propagated back to the caller.

    2. +

  2. Macros do not have their own scope: variables from the parent scope can be modified and new variables in the parent scope can be set.

    3. +
+

Prefer functions over macros to minimize side-effects.

+
+
+

Where to list sources and tests?

+

Some projects collect all sources in one file, all tests in another file, and carry them across in variables:

+
project/
+├── CMakeLists.txt
+├── cmake
+|   ├── sources.cmake
+|   ├── tests.cmake
+|   └── definitions.cmake
+├── external
+└── src
+    ├── evolution
+    ├── initial
+    ├── io
+    └── parser
+
+
+

It is recommended to organize the sources like the format below, where sources, definitions, and tests are defined in the “closest” CMakeLists.txt files.

+
project/
+├── CMakeLists.txt
+├── external
+│   ├── CMakeLists.txt
+└── src
+    ├── CMakeLists.txt
+    ├── evolution
+    │   ├── CMakeLists.txt
+    ├── initial
+    │   ├── CMakeLists.txt
+    ├── io
+    │   ├── CMakeLists.txt
+    └── parser
+        └── CMakeLists.txt
+
+
+

The reason is that this will minimize side-effects, ordering effects, and simplify maintenance for those who want to add or rename source files: they can do it in one place, close to where they are coding.

+
+
+

Order and side effects

+
    +

  • When portioning your project into modules, design them in a way so that order does not matter (much).

    • +

  • This is easier with functions than with macros, and easier with targets than with variables.

    • +

  • Avoid variables with parent or global scope. Encapsulate and prefer separation of concerns.

    • +
+
+
+

Where to keep generated files

+

CMake allows us to generate files at configure- or build-time. When generating files, we recommend to always generate into the build folder, never outside.

+

The reason is that you always want to maintain the possibility to configure different builds with the same source without having to copy the entire project to a different place.

+

Footnotes

+ +
+
+
+
+
+ + + + + + + + + + + + + + + + + + + + + + + + +

20 min

From sources to executables

30 min

CMake syntax

30 min

Probing compilation, linking, and execution

20 min

Finding and using dependencies

40 min

Target-based build systems with CMake

10 min

Tips and tricks using CMake

10 min

<no title>

+
+
+

Quick Reference

+
+
+

Instructor’s guide

+
+

Why we teach this lesson

+
+
+

Intended learning outcomes

+
+
+

Timing

+
+
+

Preparing exercises

+

e.g. what to do the day before to set up common repositories.

+
+
+

Other practical aspects

+
+
+

Interesting questions you might get

+
+
+

Typical pitfalls

+
+
+
+
+

Who is the course for?

+

This course is for students, researchers, engineers, and programmers that have heard of CMake and want to learn how to use it effectively with projects they are working on. +This course assumes no previous experience with CMake. You will have to be familiar with the tools commonly used to build software in your compiled language of choice (C/C++ or Fortran).

+

Specifically, this lesson assumes that participants have some prior experience with or knowledge of the following topics (but no expertise is required):

+
    +

  • Compiling and linking executables and libraries.

    • +

  • Differences between shared and static libraries.

    • +

  • Automated testing.

    • +
+
+
+

About this course

+

This lesson material is originally developed by the EuroCC National Competence Center Sweden (ENCCS) and taught in the CMake Workshop. +Each lesson episode has clearly defined learning objectives and includes multiple exercises along with solutions, and is therefore also useful for self-learning.

+

This material Introduction to CMake was adapted from the material used for CMake Workshop and will be use for the Build Systems Course and Hackathon.

+

The lesson material is licensed under CC-BY-4.0 and can be reused in any form (with appropriate credit) in other courses and workshops. Instructors who wish to teach this lesson can refer to the Instructor’s guide for practical advice.

+
+
+

Outreach

+

There are many free online resources regarding CMake:

+ +

You can also consult the following books:

+
    +

  • Professional CMake: A Practical Guide by Craig Scott.

    • +

  • CMake Cookbook by Radovan Bast and Roberto Di Remigio. The accompanying repository is on GitHub

    • +
+
+
+

Credits

+

The lesson file structure and browsing layout is inspired by and derived from the work by CodeRefinery licensed under the MIT license. We have copied and adapted most of their license text.

+
+

Instructional Material

+

All ENCCS instructional material is made available under the Creative Commons Attribution license (CC-BY-4.0). The following is a human-readable summary of (and not a substitute for) the full legal text of the CC-BY-4.0 license. You are free:

+
    +

  • to share - copy and redistribute the material in any medium or format;

    • +

  • to adapt - remix, transform, and build upon the material for any purpose, even commercially.

    • +
+

The licensor cannot revoke these freedoms as long as you follow these license terms:

+
    +

  • Attribution - You must give appropriate credit (mentioning that your work is derived from work that is Copyright (c) ENCCS and, where practical, linking to https://enccs.se), provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.

    • +

  • No additional restrictions - You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits. With the understanding that:

    +
    +
      +

    • You do not have to comply with the license for elements of the material in the public domain or where your use is permitted by an applicable exception or limitation.

      • +

    • No warranties are given. The license may not give you all of the permissions necessary for your intended use. For example, other rights such as publicity, privacy, or moral rights may limit how you use the material.

      • +
    +
    +
    • +
+
+
+

Software

+

The code samples and exercises in this lesson were adapted from the GitHub repository for the CMake Cookbook.

+

Except where otherwise noted, the example programs and other software provided by ENCCS are made available under the OSI-approved MIT license.

+
+
+
+ + +
+
+
+ +
+ +
+

© Copyright 2024, EuroCC National Competence Centre Sweden.

+
+ + Built with Sphinx using a + theme + provided by Read the Docs. + + +
+
+
+
+
+ + + + \ No newline at end of file diff --git a/singlehtml/objects.inv b/singlehtml/objects.inv new file mode 100644 index 0000000..a1cbc8d --- /dev/null +++ b/singlehtml/objects.inv @@ -0,0 +1,7 @@ +# Sphinx inventory version 2 +# Project: Introduction to CMake +# Version: +# The remainder of this file is compressed using zlib. +xڕTN0)FG\WC%= mc^8ɮdDjmx' !^|:,y CWH>W?oـlZYݮأ ꫌q Ha ,s :NmkK]V`4%E +"FUܡr2&byQ $kDO +)I;`oQNqEck#1c-b"ɇUuQ́[&`q~|W<ө|+Ky9n@nW SE蛆rkWFD' r+p7Uvzs|/KC_~&(iu$*AxZFP<CRK0pg"(p[$==robsL \ No newline at end of file diff --git a/targets/index.html b/targets/index.html new file mode 100644 index 0000000..c1bbbf8 --- /dev/null +++ b/targets/index.html @@ -0,0 +1,439 @@ + + + + + + + Target-based build systems with CMake — Introduction to CMake documentation + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + +
+ +
+
+
+ +
+
+
+
+ +
+

Target-based build systems with CMake

+
+

Questions

+
    +

  • How can we handle more complex projects with CMake?

    • +

  • What exactly are targets in the CMake domain-specific language (DSL)?

    • +
+
+
+

Objectives

+
    +

  • Learn that the basic elements in CMake are not variables, but targets.

    • +

  • Learn about properties of targets and how to use them.

    • +

  • Learn how to use visibility levels to express dependencies between targets.

    • +

  • Learn how to work with projects spanning multiple folders.

    • +

  • Learn how to handle multiple targets in one project.

    • +
+
+

Real-world projects require more than compiling a few source files into executables and/or libraries. In most cases, you will come to projects comprising hundreds of source files sprawling in a complex source tree.

+

With the advent of CMake 3.0, also known as Modern CMake, there has been a significant shift that the CMake domain-specific language (DSL) is structured, which can help you keep the complexity of the build system in check. Rather than relying on variables to convey information in a project, all what you need in modern CMake is targets and properties.

+
+

Targets

+

A target is the basic element in the CMake DSL, which can be declared by either add_executable or add_library. Any target has a collection of properties, which define:

+
    +

  • how the build artifact should be produced,

    • +

  • how it should be used by other targets in the project that depend on it.

    • +
+
+../_images/target.svg +
+

In CMake, the five most used commands used to handle targets are:

+
    +

  • target_sources, specifying which source files to use when compiling a target.

    • +

  • target_compile_options, specifying which compiler flags to use.

    • +

  • target_compile_definitions, specifying which compiler definitions to use.

    • +

  • target_include_directories, specifying which directories will contain header (for C/C++) and module (for Fortran) files.

    • +

  • target_link_libraries, specifying which libraries to link into the current target.

    • +
+

There are additional commands in the target_* family:

+
$ cmake --help-command-list | grep "^target_"
+
+target_compile_definitions
+target_compile_features
+target_compile_options
+target_include_directories
+target_link_directories
+target_link_libraries
+target_link_options
+target_precompile_headers
+target_sources
+
+
+
+
+

Visibility levels

+

Why it is robust to use targets and properties than using variables? Given a target tgtX, we can invoke one command in the target_* family as follows.

+
target_link_libraries(tgtX
+  PRIVATE tgt1
+  INTERFACE tgt2
+  PUBLIC tgt3
+  )
+
+
+
+../_images/target_inheritance.svg +
+

Properties on targets have varied visibility levels, which determine how CMake should propagate them between interdependent targets.

+
+
+
+

Understanding visibility levels

+

Visibility levels PRIVATE, PUBLIC, or INTERFACE are very powerful and herein we will briefly demonstrate their difference.

+

In this demo, we split the source code into 3 libraries and all files are available in the content/code/xx_visibility-levels/ folder.

+
.
+├── CMakeLists.txt
+├── greeting
+│   ├── greeting.cpp
+│   └── greeting.hpp
+├── hello_world
+│   ├── hello_world.cpp
+│   └── hello_world.hpp
+├── main.cpp
+└── world
+        ├── world.cpp
+        └── world.hpp
+
+
+
+

In this source code, the main function links to greeting which links to hello_world which links to world.

+ +

Take a look at the CMakeLists.txt:

+
 1cmake_minimum_required(VERSION 3.14)
+ 2
+ 3project(example LANGUAGES CXX)
+ 4
+ 5
+ 6add_library(world)
+ 7target_sources(world
+ 8  PUBLIC
+ 9    world/world.hpp
+10  PRIVATE
+11    world/world.cpp
+12  )
+13target_include_directories(world
+14  PUBLIC
+15    world
+16  )
+17# target_compile_definitions(world PRIVATE "MY_DEFINITION")
+18
+19
+20add_library(hello_world)
+21target_sources(hello_world
+22  PUBLIC
+23    hello_world/hello_world.hpp
+24  PRIVATE
+25    hello_world/hello_world.cpp
+26  )
+27target_include_directories(hello_world
+28  PUBLIC
+29    hello_world
+30  )
+31
+32# hello_world depends on world
+33target_link_libraries(hello_world PRIVATE world)
+34
+35
+36add_library(greeting)
+37target_sources(greeting
+38  PUBLIC
+39    greeting/greeting.hpp
+40  PRIVATE
+41    greeting/greeting.cpp
+42  )
+43target_include_directories(greeting
+44  PUBLIC
+45    greeting
+46  )
+47
+48# greeting depends on hello_world
+49target_link_libraries(greeting PRIVATE hello_world)
+50
+51
+52add_executable(example main.cpp)
+53
+54# example depends on greeting
+55target_link_libraries(example PRIVATE greeting)
+
+
+
+

Testing the 3 different visibility levels

+
    +

  1. Browse, configure, build, and run the code.

    2. +

  2. Uncomment the highlighted line (line 17) with target_compile_definitions, configure into a fresh folder, and build using the commands below. You will see that the definition is used in world.cpp but nowhere else.

    +
    $ cmake -S. -Bbuild_private
+$ cmake --build build_private
+
    +
    +
    3. +

  3. Change the definition to PUBLIC, configure into a fresh folder, and build. You will see that the definition is used both in world.cpp and hello_world.cpp.

    +
    $ cmake -S. -Bbuild_public
+$ cmake --build build_public
+
    +
    +
    4. +

  4. Then change the definition to INTERFACE, configure into a fresh folder, and build. You will see that the definition is used only in hello_world.cpp but not in world.cpp.

    +
    $ cmake -S. -Bbuild_interface
+$ cmake --build build_interface
+
    +
    +
    5. +
+
+
+
+

Properties

+

CMake lets you set properties at many different levels of visibility across the project:

+
    +

  • Global scope. These are equivalent to variables set in the root CMakeLists.txt. Their use is, however, more powerful as they can be set from any leaf CMakeLists.txt.

    • +

  • Directory scope. These are equivalent to variables set in a given leaf CMakeLists.txt.

    • +

  • Target. These are the properties set on targets that we discussed above.

    • +

  • Test.

    • +

  • Source files. For example, compiler flags.

    • +

  • Cache entries.

    • +

  • Installed files.

    • +
+

For a complete list of properties known to CMake:

+
$ cmake --help-properties | less
+
+
+

You can get the current value of any property with get_property and set the value of any property with set_property.

+
+
+

Multiple folders

+

In the code example about the visibility levels, we have split a project into three folders and libraries but we kept one CMakeLists.txt. As the project grows, this becomes impractical for humans (the CMake computer overlords will not mind) and maintenance becomes easier if we split the CMake configuration into multiple CMakeLists.txt with the help of add_subdirectory. Our goal is to have a CMakeLists.txt as close as possible to the source files.

+
project/
+├── CMakeLists.txt           <--- Root
+├── external
+│   ├── CMakeLists.txt       <--- Leaf at level 1
+└── src
+    ├── CMakeLists.txt       <--- Leaf at level 1
+    ├── evolution
+    │   ├── CMakeLists.txt   <--- Leaf at level 2
+    ├── initial
+    │   ├── CMakeLists.txt   <--- Leaf at level 2
+    ├── io
+    │   ├── CMakeLists.txt   <--- Leaf at level 2
+    └── parser
+        └── CMakeLists.txt   <--- Leaf at level 2
+
+
+

Each folder in a multi-folder project will contain a CMakeLists.txt: a source tree with one root and many leaves.

+
    +

  • The root CMakeLists.txt will contain the invocation of the project command: variables and targets declared in the root have effectively global scope.

    • +

  • The PROJECT_SOURCE_DIR will point to the folder containing the root CMakeLists.txt.

    • +

  • In order to move between the root and a leaf or between leaves, you will use the add_subdirectory command.

    • +
+

Typically, you only need to pass the first argument: the folder within the build tree will be automatically computed by CMake. We can declare targets at any level, not necessarily the root: a target is visible at the level at which it is declared and all higher levels.

+
+

Exercise yy: Cellular automata

+

Let’s work with a project spanning multiple folders. We will implement a relatively simple code to compute and print to screen elementary cellular automata. We separate the sources into src and external to simulate a nested project which reuses an external project.

+

Your goal is to:

+
    +
    • +

    1. Build the main executable at content/code/yy_automata-cxx/ for C++ and content/code/yy_automata-f/ for Fortran.

      2. +
    +
    • +
    • +

    1. Where are the obtained executables located in the build tree? Remember that CMake generates a build tree mirroring the source tree.

      2. +
    +
    • +

  • 3. The executable will accept 3 arguments: the length, number of steps, and +automaton rule. You can run it with:

    +
    $ automata 40 5 30
+
    +
    +

    The output will be:

    +
    length: 40
+number of steps: 5
+rule: 30
+                    *
+                   ***
+                  **  *
+                 ** ****
+                **  *   *
+               ** **** ***
+
    +
    +
    • +
+
+ +
+

Keypoints

+
    +

  • Using targets, you can achieve granular control over how artifacts are built and how their dependencies are handled.

    • +

  • Compiler flags, definitions, source files, include folders, link libraries, and linker options are properties of a target.

    • +

  • Avoid using variables to express dependencies between targets: use visibility levels PRIVATE, INTERFACE, PUBLIC and let CMake figure out the details.

    • +

  • To keep the complexity of the build system at a minimum, each folder in a multi-folder project should have its own CMake script.

    • +
+
+
+
+ + +
+
+ +
+
+
+
+ + + + \ No newline at end of file diff --git a/tips-and-tricks/index.html b/tips-and-tricks/index.html new file mode 100644 index 0000000..ccda424 --- /dev/null +++ b/tips-and-tricks/index.html @@ -0,0 +1,269 @@ + + + + + + + Tips and tricks using CMake — Introduction to CMake documentation + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + +
+ +
+
+
+ +
+
+
+
+ +
+

Tips and tricks using CMake

+
+

Objectives

+
    +

  • Learn what tools exist to structure projects as they grow.

    • +

  • Discuss the value of localizing scope and avoiding side effects.

    • +

  • Recognize more maintainable and less maintainable patterns.

    • +
+
+

As projects grow, code structures get more complicated: more possibilities, more corner cases, more options to users, and more developers who are contributing and may not oversee the entire CMake structure. In this episode we will mention a couple of tools to bring some structure and flow-control into larger projects. [1]

+
+

Listing sources or globbing them

+

In all our examples we have listed all sources when defining targets.

+

In CMake, you can glob patters (e.g. all files that end with *.cpp) without listing them explicitly. This is tempting, but we advice against doing this. The reason is that CMake cannot guarantee correct tracking dependency changes when you add files after you have configured. [2]

+

Listing files explicitly also allows to grep for them in the CMake code to see where a modification is likely needed. This can help colleagues in our projects who are not familiar with CMake to find out where to change things.

+
+
+

Options and flow control

+

You may want to give users the possibility to decide whether they want to enable an option or not.

+
# by default this one will be ON
+option(ENABLE_MPI "Configure for MPI parallelization" ON)
+
+if(ENABLE_MPI)
+  find_package(MPI REQUIRED COMPONENTS Fortran)
+else()
+  message(STATUS "no problem, building without MPI")
+endif()
+
+
+

Now the users can decide:

+
$ cmake -S. -Bbuild -DENABLE_MPI=OFF
+
+
+
+
+

Organizing files into modules

+

Modules are collections of functions and macros and are either CMake- or user-defined. CMake comes with a rich ecosystem of modules and you will probably write a few of your own to encapsulate frequently used functions or macros in your CMake scripts.

+

You can collect related CMake-code into a file called my_lengthy_code.cmake and then include it in another CMake code as shown below. This can help organizing projects that are growing out of hand and separate concerns.

+
include(my_lengthy_code)
+
+
+
+
+

Variables vs. targets

+

In Target-based build systems with CMake we have motivated why targets are preferable over variables.

+

When you portion your project into modules, then variable declaration impose an order and the risk is high that somebody will not know about the implicit order and reorder modules one day and the behavior will change.

+

Try to minimize the use of user-defined variables. They can point to a sub-optimal solution and a better, more state-less, declarative, solution may exist.

+
+
+

Functions and macros

+

Functions and macros are built on top of the basic built-in commands and are either CMake- or user-defined. These prove useful to avoid repetition in your CMake scripts. The difference between a function and a macro is their scope:

+
    +

  1. Functions have their own scope: variables defined inside a function are not propagated back to the caller.

    2. +

  2. Macros do not have their own scope: variables from the parent scope can be modified and new variables in the parent scope can be set.

    3. +
+

Prefer functions over macros to minimize side-effects.

+
+
+

Where to list sources and tests?

+

Some projects collect all sources in one file, all tests in another file, and carry them across in variables:

+
project/
+├── CMakeLists.txt
+├── cmake
+|   ├── sources.cmake
+|   ├── tests.cmake
+|   └── definitions.cmake
+├── external
+└── src
+    ├── evolution
+    ├── initial
+    ├── io
+    └── parser
+
+
+

It is recommended to organize the sources like the format below, where sources, definitions, and tests are defined in the “closest” CMakeLists.txt files.

+
project/
+├── CMakeLists.txt
+├── external
+│   ├── CMakeLists.txt
+└── src
+    ├── CMakeLists.txt
+    ├── evolution
+    │   ├── CMakeLists.txt
+    ├── initial
+    │   ├── CMakeLists.txt
+    ├── io
+    │   ├── CMakeLists.txt
+    └── parser
+        └── CMakeLists.txt
+
+
+

The reason is that this will minimize side-effects, ordering effects, and simplify maintenance for those who want to add or rename source files: they can do it in one place, close to where they are coding.

+
+
+

Order and side effects

+
    +

  • When portioning your project into modules, design them in a way so that order does not matter (much).

    • +

  • This is easier with functions than with macros, and easier with targets than with variables.

    • +

  • Avoid variables with parent or global scope. Encapsulate and prefer separation of concerns.

    • +
+
+
+

Where to keep generated files

+

CMake allows us to generate files at configure- or build-time. When generating files, we recommend to always generate into the build folder, never outside.

+

The reason is that you always want to maintain the possibility to configure different builds with the same source without having to copy the entire project to a different place.

+

Footnotes

+ +
+
+ + +
+
+ +
+
+
+
+ + + + \ No newline at end of file