+CHECK_WANT([OGG], [auto], [use ogg/theora/vorbis], [
+ CHECK_LIB([libogg], [ogg], [ogg_stream_init])
+ CHECK_HEADERS([libogg], [ogg headers], [ogg/ogg.h])
+ CHECK_LIB([libtheora], [theora], [theora_info_init], [-ltheoraenc -ltheoradec -logg])
+ CHECK_HEADERS([libtheora], [threora headers], [theora/theoraenc.h])
+ CHECK_LIB([libvorbis], [vorbisenc], [vorbis_encode_init], [-lvorbis -lvorbisfile -logg])
+ CHECK_HEADERS([libvorbis], [vorbis encoders headers], [vorbis/vorbisenc.h])
+ CHECK_LIB([libvorbis], [vorbisfile], [ov_open])
+ CHECK_HEADERS([libvorbis], [vorbis file headers], [vorbis/vorbisfile.h])])
+