Index: head/multimedia/svt-av1/Makefile
===================================================================
--- head/multimedia/svt-av1/Makefile	(revision 493476)
+++ head/multimedia/svt-av1/Makefile	(revision 493477)
@@ -1,52 +1,52 @@
 # $FreeBSD$
 
 PORTNAME=	svt-av1
 PORTVERSION=	s20180216
 CATEGORIES=	multimedia
 
 MAINTAINER=	jbeich@FreeBSD.org
 COMMENT=	Scalable AV1 encoder
 
 LICENSE=	BSD2CLAUSE+PATENT
 LICENSE_GROUPS=	FSF OSI COPYFREE
 LICENSE_NAME=	BSD-2-Clause Plus Patent License
 LICENSE_FILE=	${WRKSRC}/LICENSE.md
 LICENSE_PERMS=	dist-mirror dist-sell pkg-mirror pkg-sell auto-accept
 
 ONLY_FOR_ARCHS=	amd64
 ONLY_FOR_ARCHS_REASON=	uses x86-64 assembly
 
 BUILD_DEPENDS=	nasm:devel/nasm
 
-USES=		cmake
+USES=		cmake compiler:c11
 USE_GITHUB=	yes
 USE_LDCONFIG=	yes
 GH_ACCOUNT=	OpenVisualCloud
 GH_PROJECT=	SVT-AV1
 GH_TAGNAME=	56df866
 
 post-patch:
 # Default CFLAGS are already set by USES=cmake
 	@${REINPLACE_CMD} -i .flags -E -e 's/ -mavx//' \
 		-e 's/CMAKE_C_FLAGS "/&$${CMAKE_C_FLAGS} /' \
 		-e '/C_FLAGS_(RELEASE|DEBUG)/d' \
 		-e '/NASM_FLAGS_DEBUG/d' \
 		${WRKSRC}/CMakeLists.txt
 	@${REINPLACE_CMD} -i .flags -e 's/-march=core-avx2/-mavx2/' \
 		${WRKSRC}/Source/Lib/ASM_AVX2/CMakeLists.txt \
 # Avoid lang/gcc* dependency
 	@${REINPLACE_CMD} -i .gcc -e 's/gcc-//' \
 		-e '/CMAKE_C/{ s/STREQUAL/MATCHES/; s/"GNU/&|Clang/; }' \
 		${WRKSRC}/CMakeLists.txt \
 		${WRKSRC}/Source/Lib/*/CMakeLists.txt
 # Avoid platform whitelists for generic non-Windows code
 	@${REINPLACE_CMD} -i .opsys 's/Linux/${OPSYS}/' \
 		${WRKSRC}/CMakeLists.txt \
 		${WRKSRC}/Source/Lib/*/CMakeLists.txt
 	@${GREP} -Flr '__linux' ${WRKSRC} | ${XARGS} \
 		${REINPLACE_CMD} -i .opsys -E 's/__linux(__)?/__${OPSYS}__/'
 # Avoid -msse4.1 for (unused) function not under Source/Lib/ASM_SSE4_1/
 	@${REINPLACE_CMD} -e '/_sse4_1/,/}/d; /smmintrin\.h/d' \
 		${WRKSRC}/Source/Lib/Codec/EbInterPrediction.c
 
 .include <bsd.port.mk>
Index: head/multimedia/svt-hevc/Makefile
===================================================================
--- head/multimedia/svt-hevc/Makefile	(revision 493476)
+++ head/multimedia/svt-hevc/Makefile	(revision 493477)
@@ -1,53 +1,53 @@
 # $FreeBSD$
 
 PORTNAME=	svt-hevc
 DISTVERSIONPREFIX=	v
 PORTVERSION=	1.3.0
 CATEGORIES=	multimedia
 
 MAINTAINER=	jbeich@FreeBSD.org
 COMMENT=	Scalable HEVC encoder
 
 LICENSE=	BSD2CLAUSE+PATENT
 LICENSE_GROUPS=	FSF OSI COPYFREE
 LICENSE_NAME=	BSD-2-Clause Plus Patent License
 LICENSE_FILE=	${WRKSRC}/LICENSE.md
 LICENSE_PERMS=	dist-mirror dist-sell pkg-mirror pkg-sell auto-accept
 
 ONLY_FOR_ARCHS=	amd64
 ONLY_FOR_ARCHS_REASON=	uses x86-64 assembly
 
 BUILD_DEPENDS=	nasm:devel/nasm
 
-USES=		cmake
+USES=		cmake compiler:c11
 USE_GITHUB=	yes
 USE_LDCONFIG=	yes
 GH_ACCOUNT=	Intel
 GH_PROJECT=	SVT-HEVC
 
 post-patch:
 # Default CFLAGS are already set by USES=cmake
 	@${REINPLACE_CMD} -i .flags -E -e 's/ -march=native//' \
 		-e 's/-O2 -flto //' \
 		-e '/C_FLAGS_(RELEASE|DEBUG)/d' \
 		-e '/NASM_FLAGS_DEBUG/d' \
 		${WRKSRC}/CMakeLists.txt
 # Avoid devel/yasm dependency
 	@${REINPLACE_CMD} -i .typo 's/MAKE_ASM_NASM_COMPILER/s&/' \
 		${WRKSRC}/CMakeLists.txt
 # Avoid lang/gcc* dependency
 	@${REINPLACE_CMD} -i .gcc -e 's/gcc-//' \
 		-e '/CMAKE_C/{ s/STREQUAL/MATCHES/; s/"GNU/&|Clang/; }' \
 		${WRKSRC}/CMakeLists.txt \
 		${WRKSRC}/Source/Lib/*/CMakeLists.txt
 # Avoid conflict with standard types
 	@${GREP} -Flr '_T_DEFINED' ${WRKSRC} | ${XARGS} \
 		${REINPLACE_CMD} -i .types 's/_T_DEFINED/_DEFINED/'
 # Avoid platform whitelists for generic non-Windows code
 	@${REINPLACE_CMD} -i .opsys 's/Linux/${OPSYS}/' \
 		${WRKSRC}/CMakeLists.txt \
 		${WRKSRC}/Source/Lib/*/CMakeLists.txt
 	@${GREP} -Flr '__linux' ${WRKSRC} | ${XARGS} \
 		${REINPLACE_CMD} -i .opsys -E 's/__linux(__)?/__${OPSYS}__/'
 
 .include <bsd.port.mk>
Index: head/multimedia/svt-vp9/Makefile
===================================================================
--- head/multimedia/svt-vp9/Makefile	(revision 493476)
+++ head/multimedia/svt-vp9/Makefile	(revision 493477)
@@ -1,53 +1,53 @@
 # $FreeBSD$
 
 PORTNAME=	svt-vp9
 PORTVERSION=	s20180215
 CATEGORIES=	multimedia
 
 MAINTAINER=	jbeich@FreeBSD.org
 COMMENT=	Scalable VP9 encoder
 
 LICENSE=	BSD2CLAUSE+PATENT
 LICENSE_GROUPS=	FSF OSI COPYFREE
 LICENSE_NAME=	BSD-2-Clause Plus Patent License
 LICENSE_FILE=	${WRKSRC}/LICENSE.md
 LICENSE_PERMS=	dist-mirror dist-sell pkg-mirror pkg-sell auto-accept
 
 ONLY_FOR_ARCHS=	amd64
 ONLY_FOR_ARCHS_REASON=	uses x86-64 assembly
 
 BUILD_DEPENDS=	nasm:devel/nasm
 
-USES=		cmake
+USES=		cmake compiler:c11
 USE_GITHUB=	yes
 USE_LDCONFIG=	yes
 GH_ACCOUNT=	OpenVisualCloud
 GH_PROJECT=	SVT-VP9
 GH_TAGNAME=	2437369
 
 post-patch:
 # Default CFLAGS are already set by USES=cmake
 	@${REINPLACE_CMD} -i .flags -E -e 's/ -mavx//' \
 		-e 's/-O2 -flto //' \
 		-e '/C_FLAGS_(RELEASE|DEBUG)/d' \
 		-e '/NASM_FLAGS_DEBUG/d' \
 		${WRKSRC}/CMakeLists.txt
 # Avoid devel/yasm dependency
 	@${REINPLACE_CMD} -i .typo 's/MAKE_ASM_NASM_COMPILER/s&/' \
 		${WRKSRC}/CMakeLists.txt
 # Avoid lang/gcc* dependency
 	@${REINPLACE_CMD} -i .gcc -e 's/gcc-//' \
 		-e '/CMAKE_C/{ s/STREQUAL/MATCHES/; s/"GNU/&|Clang/; }' \
 		${WRKSRC}/CMakeLists.txt \
 		${WRKSRC}/Source/Lib/*/CMakeLists.txt
 # Avoid conflict with standard types
 	@${GREP} -Flr '_T_DEFINED' ${WRKSRC} | ${XARGS} \
 		${REINPLACE_CMD} -i .types 's/_T_DEFINED/_DEFINED/'
 # Avoid platform whitelists for generic non-Windows code
 	@${REINPLACE_CMD} -i .opsys 's/Linux/${OPSYS}/' \
 		${WRKSRC}/CMakeLists.txt \
 		${WRKSRC}/Source/Lib/*/CMakeLists.txt
 	@${GREP} -Flr '__linux' ${WRKSRC} | ${XARGS} \
 		${REINPLACE_CMD} -i .opsys -E 's/__linux(__)?/__${OPSYS}__/'
 
 .include <bsd.port.mk>