X11 driver now chooses "libGL.so.1" as a default when a NULL is passed to

 SDL_GL_LoadLibrary().

--HG--
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%401185

src/video/x11/SDL_x11gl.c

@@ -418,6 +418,9 @@ void X11_GL_UnloadLibrary(_THIS)
 
 #ifdef HAVE_OPENGL
 
+/* If this is wrong, please put some #ifdefs for your platform! */
+#define DEFAULT_GL_DRIVER_PATH "libGL.so.1"
+
 /* Passing a NULL path means load pointers from the application */
 int X11_GL_LoadLibrary(_THIS, const char* path) 
 {
@@ -429,6 +432,10 @@ int X11_GL_LoadLibrary(_THIS, const char* path)
 		return -1;
 	}
 
+	if ( path == NULL ) {
+		path = DEFAULT_GL_DRIVER_PATH;
+	}
+
 #ifdef RTLD_GLOBAL
 	dlopen_flags = RTLD_LAZY | RTLD_GLOBAL;
 #else