Index: Makefile
===================================================================
--- Makefile	(revision 482423)
+++ Makefile	(working copy)
@@ -20,7 +20,7 @@
 
 BROKEN_powerpc64=	fails to compile: cpu-ppc64le.c: 'AT_HWCAP2' undeclared
 
-USES=		compiler:gcc-c++11-lib localbase:ldflags python
+USES=		compiler:c++11-lang localbase:ldflags python
 USE_PYTHON=	autoplist distutils
 MAKE_ENV+=	GRPC_PYTHON_BUILD_SYSTEM_ZLIB=true \
 		GRPC_PYTHON_BUILD_SYSTEM_CARES=true
@@ -27,6 +27,9 @@
 CFLAGS+=	-Ithird_party/boringssl/include
 LDFLAGS+=	-lcares
 
+post-patch:
+	${REINPLACE_CMD} -e "s|-std=c\+\+11||g" ${WRKSRC}/setup.py
+
 post-install:
 	${STRIP_CMD} ${STAGEDIR}${PYTHONPREFIX_SITELIBDIR}/grpc/_cython/cygrpc.so
 	${REINPLACE_CMD} -e 's|${PYTHONPREFIX_SITELIBDIR}/\(.*\)/grpcio/grpc/_cython/cygrpc.so|${PYTHONPREFIX_SITELIBDIR}/grpc/_cython/cygrpc.so|g' ${_PYTHONPKGLIST}