Index: head/devel/zziplib/Makefile
===================================================================
--- head/devel/zziplib/Makefile	(revision 567836)
+++ head/devel/zziplib/Makefile	(revision 567837)
@@ -1,38 +1,38 @@
 # Created by: George Reid <greid@ukug.uk.freebsd.org>
 # $FreeBSD$
 
 PORTNAME=	zziplib
 PORTVERSION=	0.13.72
 DISTVERSIONPREFIX=	v
 CATEGORIES=	devel
 
 MAINTAINER=	sunpoet@FreeBSD.org
 COMMENT=	Library to provide transparent read access to zipped files
 
 LICENSE=	LGPL21 MPL11
 LICENSE_COMB=	dual
 LICENSE_FILE_LGPL21=	${WRKSRC}/COPYING.LIB
 LICENSE_FILE_MPL11=	${WRKSRC}/docs/COPYING.MPL
 
 BUILD_DEPENDS=	bash:shells/bash
 
-USES=		cmake
+USES=		cmake compiler:c11
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	gdraheim
 
 CMAKE_ON=	BUILD_SHARED_LIBS ZZIP_LIBTOOL ZZIP_PKGCONFIG ZZIPBINS ZZIPFSEEKO ZZIPMMAPPED ZZIPWRAP
 CMAKE_OFF=	BUILD_STATIC_LIBS BUILD_TESTS ZZIPDOCS ZZIPTEST
 TEST_TARGET=	check
 USE_LDCONFIG=	yes
 
 PORTSCOUT=	limit:^0\.
 
 OPTIONS_DEFINE=	SDL
 OPTIONS_SUB=	yes
 
 SDL_CMAKE_BOOL=	ZZIPSDL
 SDL_USE=	SDL=sdl2
 SDL_USES=	libtool:ldflags sdl
 
 .include <bsd.port.mk>