name : x86_64-linux-gnu-g-ir-generate #!/usr/bin/python3 # Copyright 2023 Collabora Ltd. # Copyright 2024 Simon McVittie # SPDX-License-Identifier: MIT import os import shutil import subprocess import sys import sysconfig from typing import NoReturn CAN_RUN = '/usr/lib/x86_64-linux-gnu/gobject-introspection/deb-can-run-amd64' DEB_HOST_ARCH = 'amd64' DEB_HOST_GNU_TYPE = 'x86_64-linux-gnu' DEB_HOST_MULTIARCH = 'x86_64-linux-gnu' TOOL = 'g-ir-generate' TOOL_PATH = '/usr/lib/x86_64-linux-gnu/gobject-introspection/g-ir-generate' ME = f'{DEB_HOST_GNU_TYPE}-{TOOL}' class CrossGirTool: def __init__( self, argv: list[str], ) -> None: self.argv = argv def can_run(self) -> bool: python_arch = sysconfig.get_config_var('MULTIARCH') if python_arch == DEB_HOST_MULTIARCH: # Common case: if python3 is already an executable of the desired # architecture, then trivially we can run it return True try: completed = subprocess.run( [CAN_RUN], check=False, stdout=subprocess.PIPE, stderr=subprocess.DEVNULL, ) except OSError: return False else: return completed.stdout == b'ok\n' and completed.returncode == 0 def find_qemu(self) -> str: qemu = shutil.which(f'qemu-{DEB_HOST_ARCH}') if qemu is not None: return qemu qemu = shutil.which(f'qemu-{DEB_HOST_ARCH}-static') if qemu is not None: return qemu raise SystemExit(f'{ME}: Cannot find qemu-{DEB_HOST_ARCH}(-static)') def exec(self) -> NoReturn: exe_wrapper = [] if not self.can_run(): print( (f'{ME}: Cannot run {DEB_HOST_ARCH} executables ' + 'directly, using qemu'), file=sys.stderr, ) exe_wrapper = [self.find_qemu()] argv = exe_wrapper + [TOOL_PATH] + sys.argv[1:] try: os.execvp(argv[0], argv) except OSError: print(f'{ME}: Unable to run: {argv}') raise if __name__ == '__main__': CrossGirTool(sys.argv).exec()