text: #!/usr/bin/env vpython3
  
  # Copyright (c) 2020 The WebRTC project authors. All Rights Reserved.
  #
  # Use of this source code is governed by a BSD-style license
  # that can be found in the LICENSE file in the root of the source
  # tree. An additional intellectual property rights grant can be found
  # in the file PATENTS.  All contributing project authors may
  # be found in the AUTHORS file in the root of the source tree.
  
  import re
  import subprocess
  import sys
  
  WEBRTC_VERSION_RE = re.compile(
      r'WebRTC source stamp [0-9]{4}-[0-9]{2}-[0-9]{2}T[0-9]{2}:[0-9]{2}:[0-9]{2}'
  )
  
  
  if __name__ == '__main__':
    args = sys.argv
    if len(args) != 2:
      print('Usage: binary_version_test.py <FILE_NAME>')
      sys.exit(1)
    filename = sys.argv[1]
    output = subprocess.check_output(['strings', filename])
    strings_in_binary = output.decode('utf-8').splitlines()
    for symbol in strings_in_binary:
      if WEBRTC_VERSION_RE.match(symbol):
        with open('webrtc_binary_version_check', 'w') as f:
          f.write(symbol)
        sys.exit(0)
    print('WebRTC source timestamp not found in "%s"' % filename)
    print('Check why "kSourceTimestamp" from call/version.cc is not linked '
          '(or why it has been optimized away by the compiler/linker)')
    sys.exit(1)
  