Index: head/biology/stringtie/Makefile
===================================================================
--- head/biology/stringtie/Makefile	(revision 526915)
+++ head/biology/stringtie/Makefile	(revision 526916)
@@ -1,26 +1,26 @@
 # $FreeBSD$
 
 PORTNAME=	stringtie
 DISTVERSION=	2.1.1
 CATEGORIES=	biology
 MASTER_SITES=	http://ccb.jhu.edu/software/stringtie/dl/
 
 MAINTAINER=	mzaki@e-mail.ne.jp
 COMMENT=	Transcript assembly and quantification for RNA-seq
 
 LICENSE=	MIT
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
 TEST_DEPENDS=	bash:shells/bash \
 		curl:ftp/curl
 
-USES=		gmake
+USES=		compiler:c++11-lang gmake
 ALL_TARGET=	release
 TEST_TARGET=	test
 
 PLIST_FILES=	bin/stringtie
 
 do-install:
 	${INSTALL_PROGRAM} ${WRKSRC}/stringtie ${STAGEDIR}${PREFIX}/bin
 
 .include <bsd.port.mk>