Function parse_depfile

ci/wasm_build_library.py:111–148

Parse Makefile-style dependency file to extract header dependencies. Format: target: dep1 dep2 dep3 \ dep4 dep5 Returns: List of dependency paths (excluding target)

(depfile_path: Path)

def parse_depfile(depfile_path: Path) -> list[Path]:
    """
    Parse Makefile-style dependency file to extract header dependencies.

    Format: target: dep1 dep2 dep3 \
            dep4 dep5

    Returns:
        List of dependency paths (excluding target)
    """
    if not depfile_path.exists():
        return []

    try:
        with open(depfile_path) as f:
            content = f.read()

        # Remove line continuations
        content = content.replace("\\\n", " ").replace("\\\r\n", " ")

        # Split on colon to separate target from dependencies
        if ":" not in content:
            return []

        deps_part = content.split(":", 1)[1]

        # Split on whitespace and filter out empty strings
        deps = [d.strip() for d in deps_part.split() if d.strip()]

        # Convert to Path objects
        return [Path(d) for d in deps]

    except KeyboardInterrupt as ki:
        handle_keyboard_interrupt(ki)
        raise
    except Exception as e:
        print(f"Warning: Could not parse dependency file {depfile_path}: {e}")
        return []


def get_latest_mtime(paths: list[Path]) -> float: