[Distutils] C extensions with non-uniform compiler options

[Konrad Hinsen]

I need to build a C extension consisting of several C code files, one  
of which needs to be compiled with different compiler options. There  
doesn't seem to be a standard way to do this.

As a workaround I added a dummy extension that uses that file, and  
specified the necessary compiler options for that extension. Then I  
removed the source file from the file list of the real extension and  
replaced it by an entry in extra_objects. The idea is the re-use the  
version compiled for the dummy extension module.

However, there are two problems:

1) The documentation for extra_objects states that "These files must  
not have extensions, as the default extension for the compiler is  
used."  That would be nice, but isn't true: on my Mac, the required  
".o" is not added.

2) The object file I wish to add has been created in "build/ 
temp.macosx-10.3-fat-2.5", but this directory is machine-specific. I  
need to construct this path in a portable way - but how?

Did anyone already solve these problems, or find another solution?

Thanks in advance,
   Konrad.
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