- Fix build with clang

- Stage support

PR:		-188144
Submitted by:	ports fury

emulators/gnuboy/Makefile

@@ -11,14 +11,14 @@ MAINTAINER=	ports@FreeBSD.org
 COMMENT=	Nintendo GameBoy emulator
 
 LICENSE=	GPLv2 # (or later)
-LICENSE_FILE=	${WRKSRC}/COPYING
 
-LIB_DEPENDS=	vga.1:${PORTSDIR}/graphics/svgalib
+LIB_DEPENDS=	libvga.so:${PORTSDIR}/graphics/svgalib
 
+USES=		compiler
 USE_SDL=	sdl
 USE_XORG=	x11
 USE_AUTOTOOLS=	autoconf
-CONFIGURE_ARGS=	--with-sdl
+CONFIGURE_ARGS=	--with-sdl --enable-optimize=low
 
 PORTDOCS=	*
 PLIST_FILES=	bin/sdlgnuboy bin/sgnuboy bin/xgnuboy
@@ -26,14 +26,19 @@ PLIST_FILES=	bin/sdlgnuboy bin/sgnuboy bin/xgnuboy
 CPPFLAGS+=	-I${LOCALBASE}/include
 LDFLAGS+=	-L${LOCALBASE}/lib
 
-NO_STAGE=	yes
-do-install:
-.for file in sdlgnuboy sgnuboy xgnuboy
-	${INSTALL_PROGRAM} ${WRKSRC}/${file} ${PREFIX}/bin
-.endfor
-.if !defined(NOPORTDOCS)
-	@${MKDIR} ${DOCSDIR}
-	${INSTALL_DATA} ${WRKSRC}/docs/* ${DOCSDIR}
+OPTIONS_DEFINE=	DOCS
+
+.include <bsd.port.pre.mk>
+
+.if ${COMPILER_TYPE} == "clang"
+CONFIGURE_ARGS+=--disable-asm
 .endif
 
-.include <bsd.port.mk>
+do-install:
+.for i in sdlgnuboy sgnuboy xgnuboy
+	(cd ${WRKSRC} && ${INSTALL_PROGRAM} ${i} ${STAGEDIR}${PREFIX}/bin)
+.endfor
+	@${MKDIR} ${STAGEDIR}${DOCSDIR}
+	(cd ${WRKSRC}/docs && ${INSTALL_DATA} * ${STAGEDIR}${DOCSDIR})
+
+.include <bsd.port.post.mk>