Index: head/devel/onetbb/Makefile
===================================================================
--- head/devel/onetbb/Makefile	(revision 566093)
+++ head/devel/onetbb/Makefile	(revision 566094)
@@ -1,38 +1,38 @@
 # $FreeBSD$
 
 PORTNAME=	onetbb
 PORTVERSION=	2021.1.1
 DISTVERSIONPREFIX=	v
 CATEGORIES=	devel
 
 MAINTAINER=	martymac@FreeBSD.org
 COMMENT=	Library that provides thread building blocks
 
 LICENSE=	APACHE20
 
 LIB_DEPENDS=	libhwloc.so.15:devel/hwloc2
 
-USES=	cmake tar:tgz
+USES=		cmake compiler:c++11-lang tar:tgz
 
 CMAKE_ARGS+=	-DTBB_STRICT:BOOL=FALSE
 
 CONFLICTS=	tbb-[0-9]*
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	oneapi-src
 GH_PROJECT=	oneTBB
 
 SUB_FILES=	onetbb.pc
 SUB_LIST=	prefix="${PREFIX}" \
 		name="${PORTNAME}" \
 		description="${COMMENT}" \
 		version="${PORTVERSION}"
 
 USE_LDCONFIG=	yes
 
 .include <bsd.port.pre.mk>
 
 post-install:
 	${INSTALL_DATA} ${WRKDIR}/onetbb.pc ${STAGEDIR}${PREFIX}/libdata/pkgconfig
 
 .include <bsd.port.post.mk>