import os def parse_version(v): return tuple(map(int, (v.split(".")))) gnutls_min_required_version = "3.6.13" conf.CHECK_FUNCS('getrandom', headers='sys/random.h') if not conf.CONFIG_SET('HAVE_GETRANDOM'): gnutls_min_required_version = "3.7.2" gnutls_required_version = gnutls_min_required_version conf.CHECK_CFG(package='gnutls', args=('"gnutls >= %s" --cflags --libs' % gnutls_required_version), msg='Checking for GnuTLS >= %s' % gnutls_required_version, mandatory=True) gnutls_version_str = conf.cmd_and_log(conf.env.PKGCONFIG + ['--modversion', 'gnutls']).strip() gnutls_version = parse_version(gnutls_version_str) # Define gnutls as a system library conf.SET_TARGET_TYPE('gnutls', 'SYSLIB') # Check for gnutls_aead_cipher_encryptv2 # # This is available since version 3.6.10, but 3.6.10 has a bug which got fixed # in 3.6.11, see: # # https://gitlab.com/gnutls/gnutls/-/merge_requests/1085 # # 3.6.10 - 3.6.14 have a severe memory leak with AES-CCM # https://gitlab.com/gnutls/gnutls/-/merge_requests/1278 if (gnutls_version > parse_version('3.6.14')): conf.DEFINE('ALLOW_GNUTLS_AEAD_CIPHER_ENCRYPTV2_AES_CCM', 1) # Check if gnutls has fips mode support # gnutls_fips140_mode_enabled() is available since 3.3.0 fragment = ''' #include #include int main(void) { unsigned int ok; ok = gnutls_fips140_mode_enabled(); return !ok; } ''' os.environ['GNUTLS_FORCE_FIPS_MODE'] = '1' conf.CHECK_CODE(fragment, 'HAVE_GNUTLS_FIPS_MODE_SUPPORTED', execute=True, addmain=False, add_headers=False, lib='gnutls', msg='Checking for gnutls fips mode support') del os.environ['GNUTLS_FORCE_FIPS_MODE']