Function write_triples_makefiles

pythonbuild/utils.py:176–219

Write out makefiles containing make variable settings derived from config.

(
    targets, dest_dir: pathlib.Path, support_search_dir: pathlib.Path
)

def write_triples_makefiles(
    targets, dest_dir: pathlib.Path, support_search_dir: pathlib.Path
):
    """Write out makefiles containing make variable settings derived from config."""
    dest_dir.mkdir(parents=True, exist_ok=True)

    for triple, settings in targets.items():
        for host_platform in settings["host_platforms"]:
            # IMPORTANT: if we ever vary the content of these Makefiles by
            # Python versions, the variable names will need add the Python
            # version and the Makefile references updated to point to specific
            # versions. If we don't do that, multi-version builds will fail
            # to work correctly.

            makefile_path = dest_dir / ("Makefile.%s.%s" % (host_platform, triple))

            lines = []
            for need in settings.get("needs", []):
                lines.append(
                    "NEED_%s := 1\n" % need.upper().replace("-", "_").replace(".", "_")
                )

            image_suffix = settings.get("docker_image_suffix", "")

            # On cross builds, we can just use the bare `gcc` image
            gcc_image_suffix = (
                image_suffix if not image_suffix.startswith(".cross") else ""
            )

            lines.append("DOCKER_IMAGE_BUILD := build%s\n" % image_suffix)
            lines.append("DOCKER_IMAGE_GCC := gcc%s\n" % gcc_image_suffix)

            entry = clang_toolchain(host_platform, triple)
            lines.append(
                "CLANG_FILENAME := %s-%s-%s.tar\n"
                % (entry, DOWNLOADS[entry]["version"], host_platform)
            )

            lines.append(
                "PYTHON_SUPPORT_FILES := $(PYTHON_SUPPORT_FILES) %s\n"
                % (support_search_dir / "extension-modules.yml")
            )

            write_if_different(makefile_path, "".join(lines).encode("ascii"))


def write_package_versions(dest_path: pathlib.Path):