--- a/include/SDL_compat.h	Sun Jul 16 03:35:44 2006 +0000
+++ b/include/SDL_compat.h	Sun Jul 16 09:34:01 2006 +0000
@@ -172,6 +172,7 @@
                                                   SDL_Rect * dstrect);
 extern DECLSPEC void SDLCALL SDL_FreeYUVOverlay(SDL_Overlay * overlay);
 extern DECLSPEC int SDLCALL SDL_GL_GetAttribute(SDL_GLattr attr, int *value);
+extern DECLSPEC void SDLCALL SDL_GL_SwapBuffers(void);
 
 /* Ends C function definitions when using C++ */
 #ifdef __cplusplus