[libvirt] remote_protocol.{c,h} ?

Hi, Is it really true that qemud/remote_protocol.{c,h} are created by rpcgen? If so, why dont we have them created at compile time? I still see them in the source code. I modified remote_protocol.x a bit, and when recompiling, remote_protocol.{c,h} are not reflected at all. So it is expected that developers must recompile with rpcgen themself?? Thanks, Jun