Cygwin for Gambit mini-howto:
1. default install of cygwin
2. repeat install.. select the following packages:-
a. gcc core
b. make
c. diffutils
3. open cygin shell from desktop icon
4. configure Gambit source with gcc options
5. make, make check, make install
( my check on winxp said all tests passed)
Cheers, -Bob-