[Distutils] solved Re: [Twisted-Python] Re: Twisted - Python 2.3 - Windows - mingw

[Cory Dodt]

Phillip J. Eby wrote:

>
> It looks like the error occurs when an MSVCCompiler instance is 
> created; I
> haven't yet figured out *why* such an instance is being created.  I don't
> have 2.3 installed on Win32, so as an experiment, I added a 'raise'
> statement to 2.2's MSVCCompiler.  If I specified compilation with msvc, I
> get the error I raised.  If I specify mingw32, I don't.  So, evidently
> 2.2's distutils don't create an MSVCCompiler instance when specifying
> mingw32.  I can't fathom why 2.3 would do so.

Well, I figured out why.  This was a bug in Twisted's setup.py, which 
has a function _check_header that is supposed to invoke the compiler on 
a tiny test module to make sure the module being built will build 
successfully.

The new compiler is constructed with new_compiler(), but no arguments 
were passed to it; it was this invocation that fails with the error 
message I was getting.  This bug was introduced some time ago; I'm not 
sure why I didn't see it before now.

Using self.compiler instead worked (there's no need to call 
new_compiler() when it's already been done for you).

C