Index: head/net/rsplib/Makefile
===================================================================
--- head/net/rsplib/Makefile	(revision 512399)
+++ head/net/rsplib/Makefile	(revision 512400)
@@ -1,24 +1,24 @@
 # Created by: Thomas Dreibholz <dreibh@iem.uni-due.de>
 # $FreeBSD$
 
 PORTNAME=	rsplib
 PORTVERSION=	3.2.4
 CATEGORIES=	net
 MASTER_SITES=	https://www.uni-due.de/~be0001/rserpool/download/
 
 MAINTAINER=	dreibh@iem.uni-due.de
 COMMENT=	RSerPool Framework and Example Applications
 
 LICENSE=	GPLv3+
 LICENSE_FILE=	${WRKSRC}/COPYING
 
-USES=		cmake qt:5 shebangfix tar:xz
+USES=		cmake compiler:c++11-lang qt:5 shebangfix tar:xz
 
 CMAKE_ARGS+=	-DCMAKE_INSTALL_MANDIR=${PREFIX}/man \
 		-DDOCSDIR="${DOCSDIR}" \
 		-DUSE_KERNEL_SCTP=1 -DENABLE_CSP=1 -DENABLE_QT=1
 SHEBANG_FILES=	src/scriptingserviceexample
 USE_LDCONFIG=	yes
 USE_QT=		buildtools_build core gui qmake widgets xml
 
 .include <bsd.port.mk>