fail to use file access module of ffmpeg

[busybeeCS]

to use ffmpeg's file access module which is called protocol, i exclude libfilesystem_plugin.a from the library list and add -enable-protocol=file to ffmpeg's configure. but when i try to play a native media file, the player report:
core demux: no access_demux modules
i dont know why, can somebody help?

[edwardw]

See other posts.