Function build

python/setup.py:542–689

(build_python, build_java, build_cpp, build_redis)

def build(build_python, build_java, build_cpp, build_redis):
    if tuple(sys.version_info[:2]) not in SUPPORTED_PYTHONS:
        msg = (
            "Detected Python version {}, which is not supported. "
            "Only Python {} are supported."
        ).format(
            ".".join(map(str, sys.version_info[:2])),
            ", ".join(".".join(map(str, v)) for v in SUPPORTED_PYTHONS),
        )
        raise RuntimeError(msg)

    if is_invalid_windows_platform():
        msg = (
            "Please use official native CPython on Windows,"
            " not Cygwin/MSYS/MSYS2/MinGW/etc.\n"
            + "Detected: {}\n  at: {!r}".format(sys.version, sys.executable)
        )
        raise OSError(msg)

    # Vendor thirdparty packages.
    #
    # TODO(ray-core, ray-ci): the version of these vendored packages should be
    # pinned, so that the build is reproducible.
    if not os.getenv("SKIP_THIRDPARTY_INSTALL_CONDA_FORGE"):
        pip_packages = ["psutil", "colorama"]
        subprocess.check_call(
            [
                sys.executable,
                "-m",
                "pip",
                "install",
                "-q",
                "--target=" + os.path.join(ROOT_DIR, THIRDPARTY_SUBDIR),
            ]
            + pip_packages,
            env=dict(os.environ, CC="gcc"),
        )

        # runtime env agent dependenceis
        runtime_env_agent_pip_packages = ["aiohttp"]
        subprocess.check_call(
            [
                sys.executable,
                "-m",
                "pip",
                "install",
                "-q",
                "--target="
                + os.path.join(ROOT_DIR, RUNTIME_ENV_AGENT_THIRDPARTY_SUBDIR),
            ]
            + runtime_env_agent_pip_packages
        )

    bazel_targets = []
    if build_python:
        bazel_targets.append("//:gen_ray_pkg")
    if build_cpp:
        bazel_targets.append("//cpp:gen_ray_cpp_pkg")