With the attached patch you can get all the way through a compile of libvirt using the MinGW cross-compiler. Basically MinGW lacks the htonl/ntohl/htons/ntohs functions. This simply adds the same functions from glibc (which has a compatible license) in a single file called "byteswap.h". The reason it worked previously was that PortableXDR used to provide these functions by linking to winsock2. However I have now removed that dependency from PortableXDR because it prevented a DLL being built of PortableXDR. This doesn't fully resolve dynamic linking of libvirt yet, but it is one step (or rather, one library) closer to happening. Rich. -- Richard Jones, Emerging Technologies, Red Hat http://et.redhat.com/~rjones Read my OCaml programming blog: http://camltastic.blogspot.com/ Fedora now supports 59 OCaml packages (the OPEN alternative to F#) http://cocan.org/getting_started_with_ocaml_on_red_hat_and_fedora