Re: [boost] Apple GCC conditional in boost.python ??

From: Ralf W. Grosse-Kunstleve (rwgk_at_[hidden])
Date: 2005-02-21 00:46:03

--- Marshall Clow <marshall_at_[hidden]> wrote:

> In boost/libs/python/src/converter/registry.cpp, I found:
> 
> >#if defined(__APPLE__) && defined(__MACH__) && defined(__GNUC__) \
> >  && __GNUC__ == 3 && __GNUC_MINOR__ <= 4 && !defined(__APPLE_CC__)
> ># define BOOST_PYTHON_CONVERTER_REGISTRY_APPLE_MACH_WORKAROUND
> >#endif
> 
> I have no idea what defining that big long symbol does,

I put it in to work around a nasty static initialization bug.
I had not clue what I was doing but thanks to the bad hack enabled by
BOOST_PYTHON_CONVERTER_REGISTRY_APPLE_MACH_WORKAROUND I got Boost.Python to
work under OS X 10.2 eventually. I think I was using gcc 3.3 from gcc.gnu.org
at the time.

> but I think 
> that the conditionals
> are incorrect.

I am sure they are not pretty but they certainly did the job.

> So, I think that that whole #if expression always evaluates to "false".

Nope. Install the old gcc 3.3 from gcc.gnu.org to verify.

See also:

    http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14232

How did you stumble over my hack? Does it cause any problems?

Cheers,
        Ralf

                
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