Hi Ben and Eliot.
The HowToBuild is like a README in the SVN download.
http://www.squeakvm.org/svn/squeak/branches/Cog/cygwinbuild/HowToBuild
How to Build the Cog VM on Windows ---------------------------------- 1. Install the tools: - Install cygwin from www.cygwin.com. As of writing the VM is built using CYGWIN_NT-5.1 mcstalkerxp 1.5.24(0.156/4/2) 2007-01-31 10:57 i686 Cygwin Make sure you install the MinGW support, which in th elist of packages is called "mingw-binutils: Binutils for MinGW.org Win32 toolchain". If, on compiling, you see the error --export-dynamic is not supported for PE targets, did you mean --export-all-symbols? then replace --export-dynamic with --export-all-symbols in the makefiles.
After a good night sleep, I remember that MinGW is "Minimal Gnu for Windows" and not "Mr. Ming's Window System" which for some reason I got in my mind as a requirement for making Cygwin application "show up" as a Windows application.
Now that that brain fog has lifted, I have 2 things to try.
There now exists a Cygwin64 (which I installed) as well as the old 32 bit Cygwin which should run on this 64 bit dos box as well
I will poke around a bit now and see what happens.
Cheers.
tty