Building GNU Bison "for Windows" Using VC++

GNU has a "Bison for Windows" page where the source and binaries are offered.

But I am guessing that the Windows binaries were built using the GNU C/C++/G/G++ (?) compiler with a WINNT/WIN32 switch, rather than setting up the source with a VC++ project. I see the nothing but input files like configure and Makefile to be set up using bash.

[Stop me if I made a mistake up to this point.]

Suppose I want to set up the source and headers as VC++ project. Aside from trying to read 3000 lines of shell script to figure out how to make "config.h", what is the best way to go about it?

Take a look at Requirements section on this page - there is no MinGW there. But there is msvcrt.dll and msvcp60.dll. It looks like it is built with VC 6. Anyway, it is not difficult to check - just install this program and use dependency walker.