I took the GNUTools distribution from SourceForge so it should be correct.

> ?  The result includes the path to the 'spec' file.  Does that contain
> "-D__MINGW32__"?

C:\Languages\Squeak\3.7.1\win32>gcc -v
Reading specs from c:\gnutools\bin\..\lib\gcc-lib\i386-mingw32\2.95.2\specs
gcc version 2.95.2 19991024 (release)

-Di386 -D_WIN32 -DWIN32 -D__WIN32__   -D__MINGW32__=0.2 -DWINNT  -D_X86_=1 -D__STDC__=1 
  -D__stdcall=__attribute__((__stdcall__))   -D_stdcall=__attribute__((__stdcall__)) 
   -D__cdecl=__attribute__((__cdecl__))   -D__declspec(x)=__attribute__((x)) 
   -Asystem(winnt) -Acpu(i386) -Amachine(i386)

Strange that it did not work right straight off other than the few plugins 
that have to be internal.

Any other pointers ?

It is not too important for me at the moment but I would like to get the 
thing working correctly for the sake of it. I may still have missed 
something. I will have another go at the whole proceedure from scratch at 
some point. Has anyone else got the Win32 3.7.1 release built using the 
SourceForge released tool chain.

Aaron