check_cflags - guarantees that -Wall -Werror --pedantic flags are set in $CFLAGS

check_cflags.py

#!/usr/bin/env python
# check_cflags.py
"""
check_cflags - guarantees that -Wall -Werror --pedantic flags are set in $CFLAGS

Exits with 0 if proper CFLAGS is used, otherwise returns with 1

Usage:
     ./check_cflags.py FILE
"""
import distutils.sysconfig
import sys


def check_cflags(filename):
    args = distutils.sysconfig.parse_makefile(filename)
    if 'CFLAGS' not in args:
        return 1
    flags = args['CFLAGS']
    return not all(flag in flags for flag in ['-Wall', '-Werror', '--pedantic'])


if __name__ == '__main__':
    filename = sys.argv[1]

    exitcode = check_cflags(filename)

    if exitcode:
        print('$(CFLAGS) does not contain -Wall -Werror and --pedantic')
    else:
        print('Makefile looks good')

    exit(exitcode)