pkgconfig for use with distutils.setup

gistfile1.py

def pkgconfig(*packages, **kw):
    flag_map = {
        '-I': 'include_dirs',
        '-L': 'library_dirs',
        '-l': 'libraries'}
    
    env = os.environ.copy()
    # possible narrowing of PkgConfig environment variables
    
    for token in check_output(['pkg-config', '--libs', '--cflags', ' '.join(packages)], env=env).split():
        key = token[:2]
        try:
            arg = flag_map[key]
            value = token[2:]
        except KeyError:
            arg = 'extra_link_args'
            value = token
        
        kw.setdefault(arg, []).append(value)
    for key, value in kw.iteritems(): # remove duplicated
        kw[key] = list(set(value))
    return kw