Index: Makefile
===================================================================
--- Makefile	(revision 488017)
+++ Makefile	(working copy)
@@ -17,7 +17,7 @@
 OPTIONS_DEFINE=	ATLAS DOCS EXAMPLES
 ATLAS_DESC=	Enable ATLAS support
 
-USES=		fortran pkgconfig
+USES=		compiler:c++11-lang fortran gl gnome pkgconfig
 USE_GL=		glu
 USE_GNOME=	gtk20
 GNU_CONFIGURE=	yes