if not conf.CHECK_FUNCS_IN('MD5Init', 'bsd', headers='bsd/md5.h',
    checklibc=True):
    conf.CHECK_FUNCS_IN('MD5Init', 'md5', headers='sys/md5.h',
                        checklibc=True)
    conf.CHECK_FUNCS_IN('MD5Init', 'md', headers='sys/md5.h',
                        checklibc=True)
conf.CHECK_FUNCS_IN('CC_MD5_Init', '', headers='CommonCrypto/CommonDigest.h',
    checklibc=True)

if conf.CHECK_FUNCS('SHA1_Update'):
	conf.DEFINE('SHA1_RENAME_NEEDED', 1)
if conf.CHECK_FUNCS('SHA256_Update'):
	conf.DEFINE('SHA256_RENAME_NEEDED', 1)
if conf.CHECK_FUNCS('SHA512_Update'):
	conf.DEFINE('SHA512_RENAME_NEEDED', 1)