Index: Makefile
===================================================================
--- Makefile	(revision 480983)
+++ Makefile	(working copy)
@@ -15,7 +15,7 @@
 USE_GITHUB=	yes
 GH_ACCOUNT=	google
 
-USES=		autoreconf libtool
+USES=		autoreconf compiler:c++11-lang libtool
 WRKSRC_SUBDIR=	${PORTNAME}
 GNU_CONFIGURE=	yes
 # fused-src python tests are only useful for bundling. There's no point in