+extern void dri_message(int level, const char *f, ...) PRINTFLIKE(2, 3);
+
+#define InfoMessageF(...) dri_message(_LOADER_INFO, __VA_ARGS__)
+#define ErrorMessageF(...) dri_message(_LOADER_WARNING, __VA_ARGS__)
+#define CriticalErrorMessageF(...) dri_message(_LOADER_FATAL, __VA_ARGS__)
+
+extern const __DRIextension **driOpenDriver(const char *driverName,
+ void **out_driver_handle);