Can CMake be Used Within setuptools to Streamline Python Extension Builds?

Extending setuptools extension to use CMake in setup.py?

When building Python extensions that link to C libraries, CMake provides more control over the build process. While bundling these extensions currently requires a separate compilation step before running setup.py bdist_wheel, there may be a more efficient solution.

Can CMake be incorporated into setup.py?"

To integrate CMake into setup.py and automate the build process for Python extensions, consider the following steps:

1. Override the build_ext command class: Subclass the build_ext command and register it in the setup.py script's command classes.
2. Custom build_ext implementation: In the overridden build_ext, use CMake to configure and compile the extension modules.
3. Example project: The article provides an example project with sample files, including a Python module, C extension, and CMakeLists.txt.

Setup script:

The setup script showcases how to override the build_ext command and configure CMake.

1. CMakeExtension: A special extension type that doesn't invoke the original build.
2. build_ext: An extended build_ext command that runs CMake for each extension.
3. Test the script: Build and install the project to verify the installation of the extension.

By embracing CMake within setup.py, you can streamline the build process for Python extensions linked to C libraries, eliminating the need for separate compilation steps.

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