Modern, PEP 517 compliant build backend for creating Python packages with extensions built using CMake.
- Building and packaging C, C++ or Fortran extension modules for Python using CMake
- Declarative configuration using
pyproject.toml(PEP 621), compatible with flit - Editable/development installations for Python modules (PEP 660)
- Compatible with pybind11 and nanobind
- Stub generation for type checking and autocompletion
- Customizable CMake configuration, build and installation options
- Support for multiple installation configurations and components
- Cross-compilation support
- No dependency on setuptools
- Compatible with cibuildwheel for building Wheels
The py-build-cmake package is available on PyPI:
pip install py-build-cmakeThe documentation can be found on https://tttapa.github.io/py-build-cmake.
The format of the configuration file is explained in Config.md.
Alternatively, use the command-line interface to get the documentation for all supported options:
py-build-cmake config formatIf you don't have one already, add a pyproject.toml configuration file to your
project's repository. Specify the metadata required by PEP 621,
and tell py-build-cmake how to build your project. For example:
[project] # Project metadata
name = "example-project"
readme = "README.md"
requires-python = ">=3.7"
license = { "file" = "LICENSE" }
authors = [{ "name" = "Pieter P", "email" = "[email protected]" }]
keywords = ["some", "keywords"]
classifiers = ["Topic :: Scientific/Engineering"]
urls = { "Documentation" = "https://tttapa.github.io/py-build-cmake" }
dependencies = ["numpy"]
dynamic = ["version", "description"]
[build-system] # How pip and other frontends should build this project
requires = ["py-build-cmake~=0.1.8"]
build-backend = "py_build_cmake.build"
[tool.py-build-cmake.module] # Where to find the Python module to package
directory = "src-python"
[tool.py-build-cmake.sdist] # What to include in source distributions
include = ["CMakeLists.txt", "src/*"]
[tool.py-build-cmake.cmake] # How to build the CMake project
build_type = "RelWithDebInfo"
source_path = "src"
build_args = ["-j"]
install_components = ["python_modules"]
[tool.py-build-cmake.stubgen] # Whether and how to generate typed stub filesThe README of examples/minimal
describes this configuration file in much more detail.
Then use pip, build
or another PEP 517 compatible frontend to build and/or install the package.
Build sdist and wheel packages you can upload to PyPI:
python -m pip install -U build
python -m build . # find the sdist and wheel file in the 'dist' folderInstall the package in the current environment:
pip install . # normal installation
pip install -e . # editable installationAs an introduction to py-build-cmake, see examples/minimal
for a detailed overview of the configuration files and the directory structure,
using a very simple Python module as an example.
For a more advanced, real-world example, see examples/pybind11-project
and examples/nanobind-project.
If you are interested in packaging C/C++/Fortran programs using py-build-cmake,
have a look at examples/minimal-program.
If you need more examples, you can look at the following projects using py-build-cmake as their Python build backend:
-
macOS support -
Entry point support - Namespace package support (PEP 420)
- Doxygen and Sphinx support