I agree with Arbel regarding Windoze, however, sometimes I have to work with it. I have just built Kannel 1.2.0 by downloading the source and compiling under the latest version of Cygwin and it worked first time giving a set of executables for Kannel.
If you can go to a Unix / Linux platform and run it there I'd recommend it, but if not don't feel you have to stick with the binary distribution of the Cygwin port, which is a little long in the tooth now. Kevin
