Index: Makefile
===================================================================
--- Makefile	(revision 482334)
+++ Makefile	(working copy)
@@ -12,7 +12,7 @@
 LICENSE=	GPLv2
 LICENSE_FILE=	${WRKSRC}/LICENCE
 
-USES=		qmake qt:5
+USES=		compiler:c++11-lang gl qmake qt:5
 USE_GL=		gl glu
 USE_QT=		core designer gui opengl widgets xml buildtools_build
 USE_LDCONFIG=	yes