curr_version = run_shell([clang_executable, '--version'],
                           allow_non_zero=True,
                           stderr=stderr)

  curr_version_split = curr_version.lower().split('clang version ')
  if len(curr_version_split) > 1:
    curr_version = curr_version_split[1].split()[0].split('git')

  if len(curr_version) > 1:
    print('WARNING: current clang installation is not a release version.\n')