Function wasi_sdk_env

Platforms/WASI/_build.py:281–317

Calculate environment variables for building with wasi-sdk.

(context)

def wasi_sdk_env(context):
    """Calculate environment variables for building with wasi-sdk."""
    wasi_sdk_path = wasi_sdk(context)
    sysroot = wasi_sdk_path / "share" / "wasi-sysroot"
    env = {
        "CC": "clang",
        "CPP": "clang-cpp",
        "CXX": "clang++",
        "AR": "llvm-ar",
        "RANLIB": "ranlib",
    }

    for env_var, binary_name in list(env.items()):
        env[env_var] = os.fsdecode(wasi_sdk_path / "bin" / binary_name)

    if not wasi_sdk_path.name.startswith("wasi-sdk"):
        for compiler in ["CC", "CPP", "CXX"]:
            env[compiler] += f" --sysroot={sysroot}"

    env["PKG_CONFIG_PATH"] = ""
    env["PKG_CONFIG_LIBDIR"] = os.pathsep.join(
        map(
            os.fsdecode,
            [sysroot / "lib" / "pkgconfig", sysroot / "share" / "pkgconfig"],
        )
    )
    env["PKG_CONFIG_SYSROOT_DIR"] = os.fsdecode(sysroot)

    env["WASI_SDK_PATH"] = os.fsdecode(wasi_sdk_path)
    env["WASI_SYSROOT"] = os.fsdecode(sysroot)

    env["PATH"] = os.pathsep.join([
        os.fsdecode(wasi_sdk_path / "bin"),
        os.environ["PATH"],
    ])

    return env


def host_triple(context):