--- default/x11-toolkits/pango/Makefile	2016-07-26 06:46:22.000000000 +0900
+++ exp/x11-toolkits/pango/Makefile	2017-03-26 06:19:59.646350000 +0900
@@ -11,7 +11,7 @@
 MAINTAINER=	gnome@FreeBSD.org
 COMMENT=	Open-source framework for the layout and rendering of i18n text
 
-USES=		tar:xz
+USES=		tar:xz compiler:c++11-lang
 
 .if !defined(REFERENCE_PORT)