diff -up mesa-20091030/src/glx/x11/glx_pbuffer.c.jx mesa-20091030/src/glx/x11/glx_pbuffer.c
--- mesa-20091030/src/glx/x11/glx_pbuffer.c.jx	2009-10-29 21:12:50.000000000 -0400
+++ mesa-20091030/src/glx/x11/glx_pbuffer.c	2009-11-17 14:56:07.000000000 -0500
@@ -35,6 +35,8 @@
 #include <X11/extensions/Xext.h>
 #include <assert.h>
 #include <string.h>
+#include <unistd.h>
+#include <limits.h>
 #include "glapi.h"
 #include "glxextensions.h"
 #include "glcontextmodes.h"
@@ -56,10 +58,13 @@ warn_GLX_1_3(Display *dpy, const char *f
    __GLXdisplayPrivate *priv = __glXInitialize(dpy);
 
    if (priv->minorVersion < 3) {
+      char buf[PATH_MAX];
+      if (readlink("/proc/self/exe", buf, PATH_MAX) == -1)
+	  buf[0] = '\0';
       fprintf(stderr, 
-	      "WARNING: Application calling GLX 1.3 function \"%s\" "
+	      "WARNING: Application %s calling GLX 1.3 function \"%s\" "
 	      "when GLX 1.3 is not supported!  This is an application bug!\n",
-	      function_name);
+	      buf, function_name);
    }
 }