Index: head/games/flightgear-terragear/Makefile
===================================================================
--- head/games/flightgear-terragear/Makefile	(revision 500611)
+++ head/games/flightgear-terragear/Makefile	(revision 500612)
@@ -1,33 +1,33 @@
 # $FreeBSD$
 
 PORTNAME=	flightgear-terragear
 PORTVERSION=	20171007
 PORTREVISION=	5
 CATEGORIES=	games
 
 MAINTAINER=	mike.d.ft402@gmail.com
 COMMENT=	Tools for building scenery for the FlightGear project
 
 LICENSE=	GPLv2
 
 BUILD_DEPENDS=	${LOCALBASE}/lib/libSimGearCore.a:devel/simgear
 LIB_DEPENDS=	libCGAL.so:math/cgal \
 		libgdal.so:graphics/gdal \
 		libmpfr.so:math/mpfr \
 		libgmp.so:math/gmp \
 		libboost_thread.so:devel/boost-libs \
 		libboost_system.so:devel/boost-libs \
 		libboost_chrono.so:devel/boost-libs \
 		libboost_date_time.so:devel/boost-libs \
 		libboost_atomic.so:devel/boost-libs \
 		libtiff.so:graphics/tiff
 RUN_DEPENDS=	${LOCALBASE}/lib/libSimGearCore.a:devel/simgear
 
-USES=	cmake
+USES=	cmake compiler:c++11-lang
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	flightgear
 GH_PROJECT=	terragear
 GH_TAGNAME=	5b5e5fc
 
 .include <bsd.port.mk>