- Add LICENSE

- Switch to options helpers
- Fix build with clang 6.0

games/stransball2/Makefile

@@ -12,10 +12,13 @@ DISTNAME=	${PORTNAME}-v${PORTVERSION:C/\.//}-linux
 MAINTAINER=	amdmi3@FreeBSD.org
 COMMENT=	Sequel to Transball and Transball 2 THRUST-type games
 
+LICENSE=	GPLv2
+LICENSE_FILE=	${BUILD_WRKSRC}/LICENSE
+
 LIB_DEPENDS=	libSGE.so:devel/sdl_sge
 
 USES=		gmake dos2unix zip
-DOS2UNIX_FILES=	sources/main.cpp
+DOS2UNIX_FILES=	sources/main.cpp sources/auxiliar.cpp
 USE_SDL=	sdl image mixer sound
 
 BUILD_WRKSRC=	${WRKSRC}/sources
@@ -37,8 +40,10 @@ post-patch:
 
 do-install:
 	${INSTALL_PROGRAM} ${BUILD_WRKSRC}/${PORTNAME} ${STAGEDIR}${PREFIX}/bin/
-	cd ${WRKSRC} && ${COPYTREE_SHARE} 'graphics sound maps demos' ${STAGEDIR}${DATADIR}/
-	${MKDIR} ${STAGEDIR}${DOCSDIR}
+	@cd ${WRKSRC} && ${COPYTREE_SHARE} 'graphics sound maps demos' ${STAGEDIR}${DATADIR}/
+
+do-install-DOCS-on:
+	@${MKDIR} ${STAGEDIR}${DOCSDIR}
 	${INSTALL_DATA} ${WRKSRC}/readme.txt ${STAGEDIR}${DOCSDIR}/
 
 .include <bsd.port.mk>

games/stransball2/files/patch-sources_auxiliar.cpp

@@ -0,0 +1,11 @@
+--- sources/auxiliar.cpp.orig	2018-05-14 19:20:42 UTC
++++ sources/auxiliar.cpp
+@@ -48,7 +48,7 @@ SDL_Surface *load_maskedimage(char *imag
+ 	mask=IMG_Load(name);
+ 
+     if (tmp==0 ||
+-		mask==0) return false;
++		mask==0) return NULL;
+ 
+ 	res=SDL_DisplayFormatAlpha(tmp);
+