Index: src/drivers/fluid_adriver.h
--- src/drivers/fluid_adriver.h.orig
+++ src/drivers/fluid_adriver.h
@@ -43,6 +43,15 @@ void fluid_audio_driver_settings(fluid_settings_t *set
 /* Defined in fluid_filerenderer.c */
 void fluid_file_renderer_settings(fluid_settings_t *settings);
 
+#if SNDIO_SUPPORT
+fluid_audio_driver_t *new_fluid_sndio_audio_driver(fluid_settings_t *settings,
+        fluid_synth_t *synth);
+fluid_audio_driver_t *new_fluid_sndio_audio_driver2(fluid_settings_t *settings,
+        fluid_audio_func_t func, void *data);
+void delete_fluid_sndio_audio_driver(fluid_audio_driver_t *p);
+void fluid_sndio_audio_driver_settings(fluid_settings_t *settings);
+#endif
+
 #if PULSE_SUPPORT
 fluid_audio_driver_t *new_fluid_pulse_audio_driver(fluid_settings_t *settings,
         fluid_synth_t *synth);
