engine/src/flutter/sky/tools/create_macos_binary.py

#!/usr/bin/env python3
#
# Copyright 2013 The Flutter Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

import argparse
import os
import subprocess
import sys


def assert_file_exists(binary_path, arch):
  if not os.path.isfile(binary_path):
    print('Cannot find macOS %s binary at %s' % (arch, binary_path))
    sys.exit(1)


def create_universal_binary(in_arm64, in_x64, out):
  subprocess.check_call(['lipo', in_arm64, in_x64, '-create', '-output', out])


def main():
  parser = argparse.ArgumentParser(
      description='Creates a universal binary from input arm64, x64 binaries'
  )
  parser.add_argument('--in-arm64', type=str, required=True)
  parser.add_argument('--in-x64', type=str, required=True)
  parser.add_argument('--out', type=str, required=True)
  args = parser.parse_args()

  in_arm64 = args.in_arm64
  in_x64 = args.in_x64
  out = args.out

  assert_file_exists(in_arm64, 'arm64')
  assert_file_exists(in_x64, 'x64')
  create_universal_binary(in_arm64, in_x64, out)

  return 0


if __name__ == '__main__':
  sys.exit(main())