I haven't had that prob. real helpful, huh?
I have been using the libsdl from the fastkernel thread. It works with sharp.
Don't know if that answers your question, but with my wads on sd and prboom installed and that lib sdl and the libsdl1.2.5's (net, mixer, etc)from the links at the doom site it goes fine.
I hope this is of some small use to you.