Index: head/devel/libversion/Makefile
===================================================================
--- head/devel/libversion/Makefile	(revision 512135)
+++ head/devel/libversion/Makefile	(revision 512136)
@@ -1,30 +1,30 @@
 # Created by: Dmitry Marakasov <amdmi3@FreeBSD.org>
 # $FreeBSD$
 
 PORTNAME=	libversion
 PORTVERSION=	3.0.0
 CATEGORIES=	devel
 
 MAINTAINER=	amdmi3@FreeBSD.org
 COMMENT=	Advanced version string comparison library
 
 LICENSE=	MIT
 LICENSE_FILE=	${WRKSRC}/COPYING
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	repology
 
-USES=		cmake
+USES=		cmake compiler:c++11-lang
 USE_LDCONFIG=	yes
 TEST_TARGET=	test
 PORTDOCS=	*
 
 OPTIONS_DEFINE=	DOCS
 
 post-install-DOCS-on:
 	@${MKDIR} ${STAGEDIR}${DOCSDIR}
 .for f in CHANGES.md README.md doc/ALGORITHM.md
 	${INSTALL_DATA} ${WRKSRC}/${f} ${STAGEDIR}${DOCSDIR}/
 .endfor
 
 .include <bsd.port.mk>