Function build_cpython

cpython-unix/build.py:702–955

Build CPython in a Docker image

(
    settings,
    client,
    image,
    host_platform,
    target_triple,
    build_options,
    dest_archive,
    version=None,
    python_source=None,
)

def build_cpython(
    settings,
    client,
    image,
    host_platform,
    target_triple,
    build_options,
    dest_archive,
    version=None,
    python_source=None,
):
    """Build CPython in a Docker image'"""
    parsed_build_options = set(build_options.split("+"))
    entry_name = "cpython-%s" % version
    if not python_source:
        entry = DOWNLOADS[entry_name]
        python_version = entry["version"]
        python_archive = download_entry(entry_name, DOWNLOADS_PATH)
    else:
        entry = DOWNLOADS.get(entry_name, {})
        python_version = os.environ["PYBUILD_PYTHON_VERSION"]
        entry.setdefault("licenses", ["Python-2.0", "CNRI-Python"])
        entry.setdefault("python_tag", "cp" + "".join(version.split(".")))
        python_archive = DOWNLOADS_PATH / ("Python-%s.tar.xz" % python_version)
        print("Compressing %s to %s" % (python_source, python_archive))
        with python_archive.open("wb") as fh:
            create_tar_from_directory(
                fh, python_source, path_prefix="Python-%s" % python_version
            )

    setuptools_archive = download_entry("setuptools", DOWNLOADS_PATH)
    pip_archive = download_entry("pip", DOWNLOADS_PATH)

    ems = extension_modules_config(EXTENSION_MODULES)

    setup = derive_setup_local(
        python_archive,
        python_version=python_version,
        target_triple=target_triple,
        build_options=parsed_build_options,
        extension_modules=ems,
    )

    enabled_extensions = setup["extensions"]
    setup_local_content = setup["setup_local"]
    extra_make_content = setup["make_data"]

    with build_environment(client, image) as build_env:
        if settings.get("needs_toolchain"):
            build_env.install_toolchain(
                BUILD,
                host_platform,
                target_triple,
                binutils=install_binutils(host_platform),
                clang=True,
                musl="musl" in target_triple,
                static="static" in build_options,
            )