Revision control

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#!/usr/bin/env python

import os
import subprocess
import sys

def main():
    if sys.platform == 'win32':
        print(0)
    else:
        cc = os.environ.get('CC', 'cc')
        try:
            cc_is_clang = 'clang' in subprocess.check_output(
              [cc, '--version'], universal_newlines=True)
        except OSError:
            # We probably just don't have CC/cc.
            cc_is_clang = False
        print(int(cc_is_clang))

if __name__ == '__main__':
    main()