int SDL_JoystickGetAxis(void){return -1;}
int SDL_JoystickGetButton(void){return -1;}
int SDL_NumJoysticks (void)  {return -1;}
int SDL_JoystickOpen(void) {return -1;}

Mix_VolumeMusic(void) {}
 Mix_PlayMusic(void) {}

Mix_PlayingMusic(void) {}
 Mix_FadeOutMusic(void) {}

 Mix_FreeMusic(void) {}
 Mix_LoadMUS(void) {}

 Mix_HaltMusic(void) {}
 
 Mix_CloseAudio(void) {}

Mix_OpenAudio(void) {}
Mix_QuerySpec(void) {}
Mix_SetMusicCMD(void) {}
Mix_SetPostMix(void) {}