games/hedgewars: Move to FFmpeg 4

Fails to build with FFmpeg 6

PR:		270248
Approved by:	portmgr (blanket, build fix)
Sponsored by:	Blinkinblox

games/hedgewars/Makefile

@@ -41,7 +41,7 @@ OPTIONS_EXCLUDE_i386=	VIDEOREC  # some pascal issues preventing to use it
 
 VIDEOREC_DESC=	Enable video recording (requires ffmpeg)
 
-VIDEOREC_LIB_DEPENDS=	libavcodec.so:multimedia/ffmpeg
+VIDEOREC_LIB_DEPENDS=	libavcodec.so.58:multimedia/ffmpeg4
 VIDEOREC_PLIST_FILES=	lib/libavwrapper.so \
 			lib/libavwrapper.so.1.0
 VIDEOREC_CMAKE_OFF=	-DNOVIDEOREC=1
@@ -60,6 +60,8 @@ post-patch:
 	@${REINPLACE_CMD} -e 's|/usr/local|${LOCALBASE}|' ${WRKSRC}/cmake_modules/*.cmake
 	@${REINPLACE_CMD} -e "s|'liblua'|'liblua-${LUA_VER}'|" ${WRKSRC}/hedgewars/LuaPas.pas
 	@${REINPLACE_CMD} -e "/linklib/ s|lua|&-${LUA_VER}|" ${WRKSRC}/hedgewars/LuaPas.pas
+	@${REINPLACE_CMD} -e 's|%%LOCALBASE%%|${LOCALBASE}|g' \
+		${PATCH_WRKSRC}/cmake_modules/FindLIBAV.cmake
 
 post-install:
 	@${STRIP_CMD} ${STAGEDIR}${PREFIX}/bin/*

games/hedgewars/files/patch-cmake__modules_FindLIBAV.cmake

@@ -0,0 +1,11 @@
+--- cmake_modules/FindLIBAV.cmake.orig	2023-04-25 07:46:45 UTC
++++ cmake_modules/FindLIBAV.cmake
+@@ -19,6 +19,8 @@
+ #  BSD license.
+ #
+
++set(CMAKE_PREFIX_PATH "%%LOCALBASE%%/ffmpeg4;%%LOCALBASE%%/ffmpeg4/libexec")
++
+ include(FindPackageHandleStandardArgs)
+
+