--- Makefile.orig	2014-07-15 21:18:18.000000000 +0400
+++ Makefile	2014-07-26 09:38:08.000000000 +0400
@@ -18,15 +18,17 @@
 GH_TAGNAME=	${PORTVERSION}
 GH_COMMIT=	58bd7c6
 
-USES=		gmake pkgconfig
+USES=		gmake pkgconfig:build
 ALL_TARGET=	game server
-USE_GL=		glew
-USE_SDL=	image mixer ttf
+USE_GL=		glew glu
+USE_SDL=	sdl image mixer ttf
 
 PLIST_FILES=	bin/${PORTNAME} bin/${PORTNAME}-server
 
 post-patch:
-	@${ECHO_CMD} >> ${WRKSRC}/src/difficulty.hpp
+	@${REINPLACE_CMD} -e \
+		's|-lpthread|${PTHREAD_LIBS}|g ; \
+		s|-Werror||' ${WRKSRC}/Makefile
 	@${REINPLACE_CMD} -e 's,%lu,%u,' ${WRKSRC}/src/server.cpp
 	@${REINPLACE_CMD} -e 's,__linux__,__${OPSYS}__,' \
 		${WRKSRC}/src/clipboard.cpp