You will require the following above and beyond the default base install:
Development: make, g++, perl ( Makefile dependencies )
Libraries: libgd-devel ( for the overland )
All necessary package dependencies to support these will be downloaded by the Cygwin installer. Once you have these setup you can compile and run AFKMud. You may note that crypt libraries are *NOT* required as AFKMud use the sha256 password scheme. It should also be noted that zlib libraries were installed as part of the base package during the last test made and are not required as a separate setup.
(Yes, we sat on this post for almost a year. What can I say?)