Index: head/multimedia/webvfx-qt5/Makefile
===================================================================
--- head/multimedia/webvfx-qt5/Makefile	(revision 488054)
+++ head/multimedia/webvfx-qt5/Makefile	(revision 488055)
@@ -1,51 +1,51 @@
 # $FreeBSD$
 
 PORTNAME=	webvfx
 DISTVERSION=	0.4.4-20160823
 PORTREVISION=	6
 CATEGORIES=	multimedia
 PKGNAMESUFFIX=	-qt5
 
 MAINTAINER=	multimedia@FreeBSD.org
 COMMENT=	Video effects library based on HTML/QML
 
 LICENSE=	BSD3CLAUSE
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
 LIB_DEPENDS=	libmlt.so:multimedia/mlt
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	mltframework
 GH_TAGNAME=	e918ce4
 
-USES=		pkgconfig qmake qt:5
+USES=		compiler:c++11-lang pkgconfig qmake qt:5
 USE_QT=		3d buildtools_build declarative opengl webkit
 USE_LDCONFIG=	yes
 
 PORTEXAMPLES=	*
 
 OPTIONS_DEFINE=	DOXYGEN EXAMPLES
 OPTIONS_SUB=	yes
 
 DOXYGEN_BUILD_DEPENDS=	doxygen:devel/doxygen
 
 post-patch-EXAMPLES-on:
 	@${REINPLACE_CMD} -i '' -e 's,examples/,,g' ${WRKSRC}/demo/mlt/*
 
 pre-configure:
 # Fix make jobs and speed up build.
 	@${REINPLACE_CMD} -e 's/debug_and_release//' ${WRKSRC}/common.pri
 
 post-build-DOXYGEN-on:
 	cd ${WRKSRC} && ${MAKE} doxydoc
 
 post-install-DOXYGEN-on:
 	cd ${WRKSRC}/doxydoc && ${COPYTREE_SHARE} . ${STAGEDIR}${DOCSDIR}
 
 post-install-EXAMPLES-on:
 	cd ${WRKSRC}/demo/examples && \
 		${COPYTREE_SHARE} . ${STAGEDIR}${EXAMPLESDIR}
 	cd ${WRKSRC}/demo && \
 		${COPYTREE_SHARE} mlt ${STAGEDIR}${EXAMPLESDIR}
 
 .include <bsd.port.mk>