- Add -fcommon to CFLAGS to unbreak the build against modern compilers,

e.g. Clang 11 or GCC 10
- While here, fix CMAKE_ARGS to avoid multi-page complaints from CMake
  and replace USE* knobs in somewhat more logical order

Reported by:	pkg-fallout

emulators/joytran/Makefile

@@ -13,13 +13,17 @@ COMMENT=	Joystick to keyboard/mouse events translator written in C
 LICENSE=	MIT
 LICENSE_FILE=	${WRKSRC}/COPYRIGHT
 
-USE_SDL=	sdl2
 USES=		cmake:insource pkgconfig sdl tar:bzip2 xorg
-CMAKE_ARGS=	-DLOCALBASE="${LOCALBASE}" -DPREFIX="${PREFIX}"
+USE_SDL=	sdl2
 USE_XORG=	x11 xtst
+CMAKE_ARGS=	-DLOCALBASE:PATH="${LOCALBASE}"
 
 OPTIONS_DEFINE=	DOCS
 
+post-patch:
+	@${REINPLACE_CMD} -e '/WARNING_FLAGS/s,-pedantic,& -fcommon,' \
+		${WRKSRC}/CMakeLists.txt
+
 post-install:
 	@${STRIP_CMD} ${STAGEDIR}${PREFIX}/bin/${PORTNAME}