Index: head/emulators/bsvc/Makefile
===================================================================
--- head/emulators/bsvc/Makefile	(revision 517267)
+++ head/emulators/bsvc/Makefile	(revision 517268)
@@ -1,26 +1,26 @@
 # Created by: tenser@spitfire.ecsel.psu.edu
 # $FreeBSD$
 
 PORTNAME=	bsvc
 DISTVERSIONPREFIX=	v
 DISTVERSION=	2.4.6
 CATEGORIES=     emulators tk
 
 MAINTAINER=	cross@gajendra.net
 COMMENT=	Extensible hardware simulation framework with MC68K support
 
 LICENSE=	LGPL21
 LICENSE_FILE=	${WRKSRC}/../LICENSE.txt
 
-USES=		tk gmake
+USES=		compiler:c++11-lang tk gmake
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	BSVC
 USE_CSTD=	c11
 USE_CXXSTD=	c++11
 
 WRKSRC_SUBDIR=	src
 MAKEFILE=	Makefile.BSD
 MAKE_ARGS+=	WISH=wish${TK_VER}
 
 .include <bsd.port.mk>