--- a/configure.in	Mon Jan 30 14:27:56 2006 +0000
+++ b/configure.in	Mon Jan 30 18:21:44 2006 +0000
@@ -619,6 +619,10 @@
                     x11_lib='/usr/X11R6/lib/libX11.6.dylib'
                     x11ext_lib='/usr/X11R6/lib/libXext.6.dylib'
                     ;;
+                *-*-osf* )
+                    x11_lib='libX11.so'
+                    x11ext_lib='libXext.so'
+                    ;;
                 *)
                     x11_lib='libX11.so.6'
                     x11ext_lib='libXext.so.6'
@@ -2585,6 +2589,13 @@
         if test x$enable_timers = xyes; then
             COPY_ARCH_SRC(src/timer, linux, SDL_systimer.c)
         fi
+        # FIXME: If building without -lX11, you get the following messages.
+        # Xlib: connection to ":0.0" refused by server
+        # Xlib: XDM authorization key matches an existing client!
+        # It only has to run xhost +localhost in a such case.
+        #if test x$enable_x11_shared = xyes; then
+        #    SYSTEM_LIBS="$SYSTEM_LIBS -lX11"
+        #fi
         ;;
     *-*-qnx*)
         ARCH=qnx

--- a/src/video/x11/SDL_x11dyn.h	Mon Jan 30 14:27:56 2006 +0000
+++ b/src/video/x11/SDL_x11dyn.h	Mon Jan 30 18:21:44 2006 +0000
@@ -72,10 +72,21 @@
 #define _XFlushGCCache p_XFlushGCCache
 #define _XReply p_XReply
 #define _XSend p_XSend
+#define XFree pXFree
+
+#if !defined(__osf__) || defined(X11_DYNAMIC)
 #define _XData32 p_XData32
-#define XFree pXFree
 #endif
 
+#if defined(__osf__) && defined(X11_DYNAMIC)
+#define _SmtBufferOverflow p_SmtBufferOverflow
+#define _SmtIpError p_SmtIpError
+#define ipAllocateData pipAllocateData
+#define ipUnallocateAndSendData pipUnallocateAndSendData
+#endif
+
+#endif /* !__SDL_NO_REDEFINE_X11_HEADER_SYMS */
+
 int SDL_X11_LoadSymbols(void);
 void SDL_X11_UnloadSymbols(void);
 

--- a/src/video/x11/SDL_x11sym.h	Mon Jan 30 14:27:56 2006 +0000
+++ b/src/video/x11/SDL_x11sym.h	Mon Jan 30 18:21:44 2006 +0000
@@ -139,11 +139,18 @@
  * These don't exist in 32-bit versions and are removed by Xlib macros, but
  *  64+ bit systems will use them.
  */
-#ifdef LONG64
+#if defined(LONG64) && !defined(__osf__) || defined(X11_DYNAMIC)
 SDL_X11_SYM(1,int,_XData32,(Display *dpy,register long *data,unsigned len))
 SDL_X11_SYM(1,void,_XRead32,(Display *dpy,register long *data,long len))
 #endif
 
+#if defined(__osf__) && defined(X11_DYNAMIC)
+SDL_X11_SYM(1,void,_SmtBufferOverflow,(Display *dpy,register smtDisplayPtr))
+SDL_X11_SYM(1,void,_SmtIpError,(Display *dpy,register smtDisplayPtr, int))
+SDL_X11_SYM(1,int,ipAllocateData,(ChannelPtr, IPCard, IPDataPtr *))
+SDL_X11_SYM(1,int,ipUnallocateAndSendData,(ChannelPtr, IPCard))
+#endif
+
 #if NeedWidePrototypes
 SDL_X11_SYM(1,KeySym,XKeycodeToKeysym,(Display*,unsigned int,int))
 #else

--- a/src/video/x11/SDL_x11video.c	Mon Jan 30 14:27:56 2006 +0000
+++ b/src/video/x11/SDL_x11video.c	Mon Jan 30 18:21:44 2006 +0000
@@ -436,6 +436,20 @@
 		local_X11 = 0;
 	}
 	SDL_Display = pXOpenDisplay(display);
+#if defined(__osf__) && defined(X11_DYNAMIC)
+	/* On Tru64 if linking without -lX11, it fails and you get following message.
+	 * Xlib: connection to ":0.0" refused by server
+	 * Xlib: XDM authorization key matches an existing client!
+	 *
+	 * It succeeds if retrying 1 second later
+	 * or if running xhost +localhost on shell.
+	 *
+	 */
+	if ( SDL_Display == NULL ) {
+		SDL_Delay(1000);
+		SDL_Display = pXOpenDisplay(display);
+	}
+#endif
 	if ( SDL_Display == NULL ) {
 		SDL_SetError("Couldn't open X11 display");
 		return(-1);