[Distutils] MSToolkit and --debug-on-release for MSVCCompiler
M.-A. Lemburg
mal at egenix.com
Wed Oct 20 15:40:51 CEST 2004
Mike C. Fletcher wrote:
> M.-A. Lemburg wrote:
> ...
>
>>> The debug-on-release recipe consists entirely of altering the
>>> compile_options and ldflags_shared properties of the compiler
>>> object. Problem is, the compiler API assumes that debug is a boolean
>>> flag, and AFAICT, has no access to the options the user passed in to
>>> whatever command is calling the compiler. As a result, it looks
>>> like it would be
>>> necessary to provide a compiler sub-class, one where specifying debug
>>> causes a debug-on-release set of options to be used. That seems
>>> silly, as it's just a feature of the MSVC compilers. Still, don't
>>> see any other elegant way to approach the problem. That said, this
>>> is a comparatively minor feature (which I'm told isn't really a
>>> *great* idea, no matter how practical/useful), so no big deal to keep
>>> having people do it with diffs.
>>
>>
>>
>> Perhaps I'm missing something, but I don't really see the advantage here.
>> If I call
>>
>> python setup.py build --debug
>>
>> I do get proper MSVC debug builds (provided I have the Python debug
>> libs installed) of distutils based extensions.
>
>
> Sure, but if you have a project with, for instance, all of wxPython,
> PyOpenGL, PyPgSQL, Numpy, mxBase, and a few other sundry extensions and
> all you want to do is track down a shallow error in your application's
> tiny little extension, then that "provided" becomes a serious PITA.
>
> Many dependencies require all sorts of setup to provide resources before
> they can be built (jpeg and png libraries, tcl/tk installations,
> postgresql client libraries, etceteras). Recursively building
> *everything* debug through the entire dependency tree can take days (and
> you're pretty much certain at *some* point you're going to be linking to
> a non-debug library anyway, after all, AFAIK there *is* no debug version
> of, for instance, OpenGL or GLU on Windows).
Ok, point taken.
--
Marc-Andre Lemburg
eGenix.com
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