1) Test Platform:
a) WinNT
b) Win95
c) Win 3.1 and Win32s extensions (not recommend)
2) EMX port of the GNU-C compiler (emx09d/nt09d):
You can use the original EMX port or the recompiled port for DOS and Win32.
a)the original EMX 0.9d for DOS and OS/2
b)NT09D (zip-files are called nt09d-x.zip)
the recompiled EMX port for DOS and Win32 (instead of OS/2). Long filenames are supported under Win32.
3) Optional: Binaries and Include files from the PlatformSDK
The Microsoft Platform SDK includes Win32 Header files and some binaries for creating Help files and resources.