games/uhexen: fix build with -fno-common, on big endian platforms

- turns a duplicate definition into a declaration
 - replace nonexisting byte swap functions with gcc/clang intrinsics
 - define LICENSE

games/uhexen/Makefile

@@ -1,6 +1,6 @@
 PORTNAME=	uhexen
 PORTVERSION=	0.601
-PORTREVISION=	11
+PORTREVISION=	12
 CATEGORIES=	games
 MASTER_SITES=	SF/${PORTNAME}/${PORTNAME}/U-hexen%20version%20${PORTVERSION}
 
@@ -8,10 +8,10 @@ MAINTAINER=	ports@FreeBSD.org
 COMMENT=	Yet another port of Hexen, popular game from Raven Software
 WWW=		http://uhexen.sourceforge.net/
 
-BROKEN_FreeBSD_13=	ld: error: duplicate symbol: mouse_scale_factor
-BROKEN_FreeBSD_14=	ld: error: duplicate symbol: mouse_scale_factor
-BROKEN_powerpc=		fails to compile
-BROKEN_powerpc64=	fails to compile: m_misc.o: undefined reference to 'ShortSwap'
+LICENSE=	ACTIVISION
+LICENSE_FILE=	${WRKSRC}/LICENSE
+LICENSE_NAME=	Activision Software License Agreement
+LICENSE_PERMS=	no-dist-mirror no-dist-sell no-pkg-mirror no-pkg-sell auto-accept
 
 USES=		gmake sdl
 USE_SDL=	mixer sdl

games/uhexen/files/patch-include__h2def.h

@@ -1,5 +1,5 @@
---- include/h2def.h	2003/02/10 14:43:33	1.1
-+++ include/h2def.h	2003/02/10 14:46:37
+--- include/h2def.h.orig	2001-12-02 08:51:54 UTC
++++ include/h2def.h
 @@ -26,7 +26,11 @@
  
  /* XXX ifdefs */
@@ -12,3 +12,16 @@
  
  // Uncomment, to enable all timebomb stuff
  //#define TIMEBOMB
+@@ -894,10 +898,8 @@ fixed_t	FixedDiv2 (fixed_t a, fixed_t b);
+ #endif
+ 
+ #ifdef __BIG_ENDIAN__
+-short ShortSwap(short);
+-long LongSwap(long);
+-#define SHORT(x)	ShortSwap(x)
+-#define LONG(x)		LongSwap(x)
++#define SHORT(x)	__builtin_bswap16(x)
++#define LONG(x)		__builtin_bswap32(x)
+ #else
+ #define SHORT(x)	(x)
+ #define LONG(x)		(x)

games/uhexen/files/patch-src_i__fbsdvideo.c

@@ -0,0 +1,20 @@
+--- src/i_fbsdvideo.c.orig	2023-04-15 12:37:20 UTC
++++ src/i_fbsdvideo.c
+@@ -8,7 +8,7 @@
+ #include <sys/fbio.h>
+ #include <sys/kbio.h>
+ #include <sys/consio.h>
+-#include <sys/termios.h>
++#include <termios.h>
+ #include <sys/mman.h>
+ #include <stdlib.h>
+ #include <unistd.h>
+@@ -26,7 +26,7 @@
+ #define RestorePalette()  SavRstPalette(FBIO_SETPALETTE)
+ 
+ extern int usemouse;
+-int mouse_scale_factor;
++extern int mouse_scale_factor;
+ 
+ static event_t	event;
+