I would like to write a Gentoo ebuild for graphcalc to expose it to x86 and amd64 testing.  Please have someone teach you autoconf/automake and help you port gcalc's build system to it while keeping windows compatibility; it must continue to build under windows easily :)

I ask for autoconf/automake becaues these systems make decisions and do checks to help make your code portable with less work for you, or so I've read about them.  I still need to learn to use them.