./src/audio/esd/SDL_esdaudio.c:30:17: error: esd.h: No such file or directory
./src/audio/esd/SDL_esdaudio.c: In function 'ESD_OpenAudio':
./src/audio/esd/SDL_esdaudio.c:274: error: 'esd_format_t' undeclared (first use in this function)
./src/audio/esd/SDL_esdaudio.c:274: error: (Each undeclared identifier is reported only once
./src/audio/esd/SDL_esdaudio.c:274: error: for each function it appears in.)
./src/audio/esd/SDL_esdaudio.c:274: error: expected ';' before 'format'
./src/audio/esd/SDL_esdaudio.c:277: error: 'format' undeclared (first use in this function)
./src/audio/esd/SDL_esdaudio.c:277: error: 'ESD_STREAM' undeclared (first use in this function)
./src/audio/esd/SDL_esdaudio.c:277: error: 'ESD_PLAY' undeclared (first use in this function)
./src/audio/esd/SDL_esdaudio.c:280: error: 'ESD_BITS8' undeclared (first use in this function)
./src/audio/esd/SDL_esdaudio.c:283: error: 'ESD_BITS16' undeclared (first use in this function)
./src/audio/esd/SDL_esdaudio.c:290: error: 'ESD_MONO' undeclared (first use in this function)
./src/audio/esd/SDL_esdaudio.c:292: error: 'ESD_STEREO' undeclared (first use in this function)
make: *** [build/SDL_esdaudio.lo] 错误 1