Index: head/science/py-rmf/Makefile
===================================================================
--- head/science/py-rmf/Makefile	(revision 490088)
+++ head/science/py-rmf/Makefile	(revision 490089)
@@ -1,28 +1,28 @@
 # $FreeBSD$
 
 PORTNAME=	rmf
 DISTVERSION=	1.1
 CATEGORIES=	science graphics
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	Library to support reading and writing of Rich Molecular Format files
 
 LICENSE=	APACHE20
 LICENSE_FILE=	${WRKSRC}/COPYING
 
 BUILD_DEPENDS=	swig3.0:devel/swig30
 LIB_DEPENDS=	libRMF.so:science/rmf
 
-USES=		cmake python shebangfix
+USES=		cmake compiler:c++11-lang python shebangfix
 USE_GITHUB=	yes
 GH_ACCOUNT=	salilab
 GH_TAGNAME=	f917cf2
 SHEBANG_GLOB=	*.py
 USE_PYTHON=	flavors
 
 CMAKE_ARGS=	-DCMAKE_INSTALL_PYTHONDIR:STRING=${PYTHON_SITELIBDIR}
 BINARY_ALIAS=	python=${PYTHON_CMD}
 LDFLAGS+=	-lRMF
 
 .include <bsd.port.mk>