games/lugaru builds fine with Clang

- Add missing libGL dependency
- Fix bad absolute symlink
- Add LLD_UNSAFE because of the audio/openal-soft dependency [1]

PR:		226980 [1]

games/lugaru/Makefile

@@ -3,7 +3,7 @@
 
 PORTNAME=	lugaru
 PORTVERSION=	269
-PORTREVISION=	10
+PORTREVISION=	11
 CATEGORIES=	games
 MASTER_SITES=	https://bitbucket.org/oss${PORTNAME}/${PORTNAME}/downloads/
 DISTNAME=	${PORTNAME}-rev${DISTVERSION}-src
@@ -19,10 +19,10 @@ LIB_DEPENDS=	libpng.so:graphics/png \
 		libogg.so:audio/libogg
 
 USES=		cmake jpeg openal:soft pkgconfig tar:bzip2
-USE_GL=		glu
+USE_GL=		gl glu
 USE_SDL=	sdl
 USE_XORG=	sm
-USE_GCC=	yes
+LLD_UNSAFE=	yes
 
 PORTDOCS=	README
 OPTIONS_DEFINE=	DOCS
@@ -39,10 +39,11 @@ post-patch:
 post-install:
 	${STRIP_CMD} ${STAGEDIR}${DATADIR}/${PORTNAME}
 	${INSTALL_SCRIPT} ${WRKDIR}/${PORTNAME} ${STAGEDIR}${PREFIX}/bin/
-	${LN} -sf ${DATADIR}/Data/Textures/Lugaru.png \
+	${RLN} ${STAGEDIR}${DATADIR}/Data/Textures/Lugaru.png \
 		${STAGEDIR}${PREFIX}/share/pixmaps/${PORTNAME}.png
 
+post-install-DOCS-on:
 	@${MKDIR} ${STAGEDIR}${DOCSDIR}
-	${INSTALL_DATA} ${PORTDOCS:S|^|${WRKSRC}/|} ${STAGEDIR}${DOCSDIR}
+	cd ${WRKSRC} && ${INSTALL_DATA} ${PORTDOCS} ${STAGEDIR}${DOCSDIR}
 
 .include <bsd.port.mk>