--- Makefile	2020-07-04 00:30:11.000000000 +0200
+++ Makefile	2020-07-11 15:41:55.852830000 +0200
@@ -8,9 +8,6 @@ 
 CATEGORIES=	multimedia audio net
 MASTER_SITES=	https://ffmpeg.org/releases/
 
-PATCH_SITES=		${SVTHEVC_PATCH_SITES_} ${SVTAV1_PATCH_SITES_} ${SVTVP9_PATCH_SITES_}
-PATCHFILES=		${SVTHEVC_PATCHFILES_}  ${SVTAV1_PATCHFILES_}  ${SVTVP9_PATCHFILES_}
-
 MAINTAINER=	multimedia@FreeBSD.org
 COMMENT=	Realtime audio/video encoder/converter and streaming server
 
@@ -456,7 +453,7 @@ 
 
 # svt-av1
 SVTAV1_LIB_DEPENDS=	libSvtAv1Enc.so:multimedia/svt-av1
-SVTAV1_CONFIGURE_ENABLE=	libsvtav1
+SVTAV1_CONFIGURE_ON=	--enable-libsvtav1
 SVTAV1_PATCH_SITES_=	https://github.com/OpenVisualCloud/SVT-AV1/raw/v0.8.4/ffmpeg_plugin/:svtav1
 SVTAV1_PATCHFILES_=	0001-Add-ability-for-ffmpeg-to-run-svt-av1-with-svt-hevc.patch:-p1:svtav1
 .if exists(/usr/bin/ld.lld) && (${/usr/bin/ld:L:tA} != /usr/bin/ld.lld)
@@ -466,7 +463,7 @@ 
 
 # svt-hevc
 SVTHEVC_LIB_DEPENDS=	libSvtHevcEnc.so:multimedia/svt-hevc
-SVTHEVC_CONFIGURE_ENABLE=	libsvthevc
+SVTHEVC_CONFIGURE_ON=	--enable-libsvthevc
 SVTHEVC_PATCH_SITES_=	https://github.com/Intel/SVT-HEVC/raw/v1.4.3/ffmpeg_plugin/:svthevc
 SVTHEVC_PATCHFILES_=	0001-lavc-svt_hevc-add-libsvt-hevc-encoder-wrapper.patch:-p1:svthevc \
 			0002-doc-Add-libsvt_hevc-encoder-docs.patch:-p1:svthevc
@@ -476,7 +473,7 @@ 
 
 # svt-vp9
 SVTVP9_LIB_DEPENDS=	libSvtVp9Enc.so:multimedia/svt-vp9
-SVTVP9_CONFIGURE_ENABLE=	libsvtvp9
+SVTVP9_CONFIGURE_ON=	--enable-libsvtvp9
 SVTVP9_PATCH_SITES_=	https://github.com/OpenVisualCloud/SVT-VP9/raw/v0.2.0-5-g1b4277c/ffmpeg_plugin/:svtvp9
 SVTVP9_PATCHFILES_=	master-0001-Add-ability-for-ffmpeg-to-run-svt-vp9-with-hevc-av1.patch:-p1:svtvp9
 .if exists(/usr/bin/ld.lld) && (${/usr/bin/ld:L:tA} != /usr/bin/ld.lld)
@@ -622,6 +619,13 @@ 
 # under doc subdirectory
 DOC_DOCFILES=	APIchanges *.txt
 PORTDOCS=	*
+
+.include <bsd.port.options.mk>
+
+.if ${PORT_OPTIONS:MSVTAV1} || ${PORT_OPTIONS:MSVTHEVC} || ${PORT_OPTIONS:MSVTVP9}
+PATCH_SITES=		${SVTHEVC_PATCH_SITES_} ${SVTAV1_PATCH_SITES_} ${SVTVP9_PATCH_SITES_}
+PATCHFILES=		${SVTHEVC_PATCHFILES_}  ${SVTAV1_PATCHFILES_}  ${SVTVP9_PATCHFILES_}
+.endif
 
 post-patch:
 # {C,LD}FLAGS safeness