Index: math/libnormaliz/Makefile
===================================================================
--- math/libnormaliz/Makefile
+++ math/libnormaliz/Makefile
@@ -15,7 +15,7 @@
 BUILD_DEPENDS=	${LOCALBASE}/include/boost/dynamic_bitset.hpp:devel/boost-libs \
 		${LOCALBASE}/include/gmpxx.h:math/gmp
 
-USES=		gmake
+USES=		compiler:c++11-lang gmake
 USE_GITHUB=	yes
 
 GH_ACCOUNT=	Normaliz