On linux distros machines, following commands will build and install uftrace from source.
$ sudo misc/install-deps.sh # optional for special features
$ make
$ sudo make install
For more information, please see below.
The latest version of uftrace is available at Github.
https://github.com/namhyung/uftrace
Now uftrace can be built without any external libraries. But in order to use more advanced features, it'd be better to install them like below.
Firstly, please make sure pkg-config is installed in the system to properly
detect the dependencies of uftrace. Otherwise, some packages may not be
detected even if they are already installed and it disables some features of
uftrace.
Historically uftrace depended on the libelf from elfutils project for ELF
file manipulation. While it's not mandatory anymore, we recommend you to
install it for better handling of ELF binaries. Also libdw library is
recommended to be installed in order to process DWARF debug information. The
libdw itself depends on the libelf, so you can just install libdw.
On debian based systems (like Ubuntu), libdw-dev package will provide
required libraries/files.
$ sudo apt-get install libdw-dev
On redhat based systems (like Fedora, RHEL), it'll be elfutils-devel.
$ sudo dnf install elfutils-devel
It also uses libstdc++ library to demangle C++ symbols in full detail. But it's not mandatory as uftrace has its own demangler for shorter symbol name (it omits arguments, templates and so on).
And ncursesw library is to implement text user interface (TUI) on console.
The ncurses(w) library provides terminal handling routines so uftrace tui
command is built on top of them. As it improves user experience of trace data
analysis, you need to consider install it if you do things like uftrace graph
or uftrace report frequently.
Also it needs pandoc to build man pages from the markdown document.
To build uftrace, you need to install basic software development tools first - like gcc and make. And also you need to install dependent softwares, please see DEPENDENCY section for details.
Once you installed required software(s), you can run make to build it.
$ make
It builds uftrace and resulting binary exists in the current directory. This is good for testing, but you'll want to install it for normal use.
$ sudo make install
It installs the uftrace under /usr/local by default, if you want install it
to other location, you can set the prefix variable when invoking the
configure before running make. (see below).
$ ./configure --prefix=/usr
$ make
$ sudo make install
The output of build looks like linux kernel style, users can see original build command lines with V=1 (like kernel).
$ make V=1
The uftrace implements own version of configure script to save user
preferences. The config file (named .config) is created if not exist
on build time with default options. User can set custom installation
directories or build directory with this script.
$ ./configure --help
Usage: ./configure [<options>]
--help print this message
--prefix=<DIR> set install root dir as <DIR> (default: /usr/local)
--bindir=<DIR> set executable install dir as <DIR> (default: ${prefix}/bin)
--libdir=<DIR> set library install dir as <DIR> (default: ${prefix}/lib)
--mandir=<DIR> set manual doc install dir as <DIR> (default: ${prefix}/share/man)
--objdir=<DIR> set build dir as <DIR> (default: ${PWD})
--sysconfdir=<DIR> override the etc dir as <DIR>
--with-elfutils=<DIR> search for elfutils in <DIR>/include and <DIR>/lib
--without-libelf build without libelf (and libdw) (even if found on the system)
--without-libdw build without libdw (even if found on the system)
--without-libstdc++ build without libstdc++ (even if found on the system)
--without-libpython build without libpython2.7 (even if found on the system)
--without-libncurses build without libncursesw (even if found on the system)
--without-perf build without perf event (even if available)
--without-schedule build without scheduler event (even if available)
-p preserve old setting
Some influential environment variables:
ARCH Target architecture e.g. arm, aarch64, or x86_64
CROSS_COMPILE Specify the compiler prefix during compilation
e.g. CC is overridden by $(CROSS_COMPILE)gcc
CFLAGS C compiler flags
LDFLAGS linker flags
Also you can set the target architecture and compiler options like CC, CFLAGS.
It's also possible to disable some features depending on external libraries or
system behaviors. For example --without-libpython option will make scripting
feature disabled - uftrace script command will still exist but won't work.
For cross compile, you may want to setup the toolchain something like below:
$ export CROSS_COMPILE=/path/to/cross/toolchain/arm-unknown-linux-gnueabihf-
$ ./configure ARCH=arm CFLAGS='--sysroot /path/to/sysroot'
This assumes you already installed the cross-built libelf on the sysroot
directory. Otherwise, you can also build it from source (please see below) or
use it on a different path using --with-elfutils=<PATH>.
It may be useful to manually compile libelf/libdw for uftrace build if the
target system doesn't have them installed. misc/install-elfutils.sh provides
a way to download and build libelf and libdw, which are libraries in elfutils.
The below is the way to compile uftrace together with libelf/libdw.
$ export CROSS_COMPILE=arm-linux-gnueabi-
$ export ARCH=arm
$ export CFLAGS="-march=armv7-a"
$ ./misc/install-elfutils.sh --prefix=/path/to/install
$ ./configure --prefix=/path/to/install --with-elfutils=/path/to/install
$ make
$ make install
misc/install-elfutils.sh downloads and builds elfutils and install both
libelf and libdw to prefix directory. The installed libelf and libdw can be
found using --with-elfutils in configure script.