Index: head/devel/py-gevent/Makefile
===================================================================
--- head/devel/py-gevent/Makefile	(revision 540567)
+++ head/devel/py-gevent/Makefile	(revision 540568)
@@ -1,48 +1,48 @@
 # Created by: Peter Schuller <peter.schuller@infidyne.com>
 # $FreeBSD$
 
 PORTNAME=	gevent
 PORTVERSION=	20.6.2
 CATEGORIES=	devel python
 MASTER_SITES=	CHEESESHOP
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 
 MAINTAINER=	sunpoet@FreeBSD.org
 COMMENT=	Python co-routine networking library based on greenlet
 
 LICENSE=	MIT
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
 BUILD_DEPENDS=	c-ares>=1.15.0:dns/c-ares \
 		libev>=4.31:devel/libev \
 		libuv>=1.34.0:devel/libuv \
 		${RUN_DEPENDS}
 LIB_DEPENDS=	libcares.so:dns/c-ares \
 		libev.so:devel/libev \
 		libuv.so:devel/libuv
 RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}greenlet>=0.4.16:devel/py-greenlet@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}zope.event>=0:devel/py-zope.event@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}zope.interface>=0:devel/py-zope.interface@${PY_FLAVOR}
 TEST_DEPENDS=	${PYTHON_PKGNAMEPREFIX}sqlite3>=0:databases/py-sqlite3@${PY_FLAVOR}
 
-USES=		localbase python
+USES=		compiler:c11 localbase python
 USE_PYTHON=	autoplist concurrent distutils
 
 MAKE_ENV=	GEVENTSETUP_EMBED_CARES=0 GEVENTSETUP_EMBED_LIBEV=0 GEVENTSETUP_EMBED_LIBUV=0
 
 .include <bsd.port.pre.mk>
 
 post-patch:
 .if ${PYTHON_REL} >= 3000
 	@${RM} ${WRKSRC}/src/gevent/_util_py2.py
 .endif
 # Clean up bundled libraries
 	@${RM} -fr ${WRKSRC}/deps/
 
 post-install:
 	${FIND} ${STAGEDIR}${PYTHON_SITELIBDIR} -name '*.so' -exec ${STRIP_CMD} {} +
 
 do-test:
 	cd ${WRKSRC} && ${SETENV} PYTHONPATH=${STAGEDIR}${PYTHON_SITELIBDIR} ${PYTHON_CMD} -m gevent.tests --config known_failures.py
 
 .include <bsd.port.post.mk>