- Try to unbreak parallel builds (-jX): their makefile has a rule with

multiple outputs, which is triggered twice; use GNU make(1) ordered
  prerequisites to avoid this race
- Install manual page relative to MANPREFIX, not PREFIX
- While here, convert to OptionsNG (NOPORTDOCS -> PORT_OPTIONS:MDOCS)

Reported by:	marino

games/omega/Makefile

@@ -1,4 +1,4 @@
-# Created by: Andrey Zakhvatov
+# Created by: Andrey Zakhvatov <andy@icc.surw.chel.su>
 # $FreeBSD$
 
 PORTNAME=	omega
@@ -10,6 +10,7 @@ DISTNAME=	${PORTNAME}-${PORTVERSION}-src
 MAINTAINER=	ports@FreeBSD.org
 COMMENT=	Complex rogue-style game of dungeon exploration
 
+USES=		gmake	# to allow -jX builds (rules with multiple outputs)
 WRKSRC=		${WRKDIR}/${PORTNAME}
 ALL_TARGET=	# empty
 CFLAGS+=	-Wno-return-type
@@ -18,11 +19,15 @@ MAN6=		omega.6
 MYPORTDOCS=	buglist.txt docs/compile.all docs/omega.txt docs/readme.1st \
 		docs/readme3 docs/readme4
 
+OPTIONS_DEFINE=	DOCS
+
+.include <bsd.port.options.mk>
+
 do-install:
 	${INSTALL_PROGRAM} ${WRKSRC}/omega ${PREFIX}/bin/omega-game
 	@${CHOWN} root:games ${PREFIX}/bin/omega-game
 	@${CHMOD} 2711 ${PREFIX}/bin/omega-game
-	${INSTALL_MAN} ${WRKSRC}/docs/omega.6 ${PREFIX}/man/man6
+	${INSTALL_MAN} ${WRKSRC}/docs/omega.6 ${MANPREFIX}/man/man6
 	@${MKDIR} ${DATADIR}
 	${INSTALL_DATA} ${WRKSRC}/lib/* ${DATADIR}
 	@${RM} ${DATADIR}/license.old
@@ -31,11 +36,9 @@ do-install:
 	${CP} ${DATADIR}/omega.hi ${DATADIR}/omegahi.bak
 	@${CHMOD} 0460 ${DATADIR}/omegahi.bak
 	@${CHOWN} -R root:games ${DATADIR}
-.if !defined(NOPORTDOCS)
+.if ${PORT_OPTIONS:MDOCS}
 	@${MKDIR} ${DOCSDIR}
-.for file in ${MYPORTDOCS}
-	${INSTALL_DATA} ${WRKSRC}/${file} ${DOCSDIR}
-.endfor
+	${INSTALL_DATA} ${MYPORTDOCS:S,^,${WRKSRC}/,} ${DOCSDIR}
 .endif
 
 .include <bsd.port.mk>

games/omega/files/patch-aa

@@ -47,3 +47,15 @@
  	cp omega $(BINDIR)
  	chmod 4711 $(BINDIR)/omega
  	- cp lib/* $(LIBDIR)
+@@ -71,9 +74,9 @@
+ 
+ $(OBJ): clrgen.h defs.h extern.h glob.h
+ 
+-clrgen.h clrgen.c: genclr.c minit.h defs.h
+-	$(MAKE) genclr
++clrgen.c: genclr
+ 	$(CPP) -DOMEGA_CLRGEN *.[ch] | ./genclr clrgen.c clrgen.h
++clrgen.h: | clrgen.c
+ 
+ genclr: genclr.o
+ 	$(CC) $(LDFLAGS) genclr.o -o genclr