I downloaded the new build tools and compiled mame0169 64bit (back when it was the latest)
Now I want to build groovymame for my win32 machine. First step is to build mame as 32bit on my 64bit PC.
The instructions at
http://mamedev.org/tools/ just say run config32.bat to switch
Then I do: make REGENIE=1 (result is same with/without REGENIE )
and get the error: makefile:849: *** MINGW64 is not set. Stop.