Index: Makefile
===================================================================
--- Makefile	(revision 491546)
+++ Makefile	(working copy)
@@ -15,7 +15,7 @@
 MAKE_JOBS_UNSAFE=	yes
 USE_LDCONFIG=	yes
 
-USES=		qmake qt:5 shebangfix tar:xz
+USES=		compiler:c++11-lang qmake qt:5 shebangfix tar:xz
 USE_QT=		core gui network linguist_build \
 		buildtools_build widgets webkit svg
 USE_GL+=	gl