Index: Makefile
===================================================================
--- Makefile	(revision 486085)
+++ Makefile	(working copy)
@@ -14,7 +14,7 @@
 LICENSE_FILE=	${WRKSRC}/COPYING
 
 USE_GNOME=	gtk20
-USES=		bison gmake tar:bzip2
+USES=		bison compiler:c++11-lang gmake tar:bzip2
 USE_WX=		2.8
 WX_CONF_ARGS=	absolute
 GNU_CONFIGURE=	yes