Index: Makefile
===================================================================
--- Makefile	(revision 487631)
+++ Makefile	(working copy)
@@ -14,7 +14,7 @@
 
 RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}fonttools>=3.1:print/py-fonttools@${PY_FLAVOR}
 
-USES=		python zip
+USES=		compiler:c++11-lang python zip
 USE_PYTHON=	autoplist concurrent distutils
 
 .include <bsd.port.mk>