[Pyobjc-dev] Re: debugging pyobjc

[Michael H. <mw...@py...>]

Ronald Oussoren <ous...@ci...> writes:

> On 22 jan 2004, at 17:21, Michael Hudson wrote:
>
>> Michael Hudson <mw...@py...> writes:
>>
>>> I'm vaguely trying to track down a bug in recent versions of pygame on
>>> MacOS X, which now uses PyObjC.  So, after much wailing and gnashing
>>> of teeth (see pythonmac-sig) I have a debugging framework install of
>>> Python, and seem to have built pyobjc against it.
>>>
>>> 1) PyObjC's setup.py seems to unconditionally pass -O3 to the
>>>    compiler.  This is, um, contrary to the spirit of a debug build.
>>>    What's wrong with the value of CFLAGS you get by default (from
>>>    $(prefix)/lib/python$(VERSION)/config/Makefile)?
>
> I'll change those, the defaults should be good enough.

Ta.

>>>
>>> 2) Stuff like this isn't encouraging:
>>>

[snippety]

>>>
>>> Am I in new territory here?
>>
>> Actually I'm seeing runPyObjCtests (or whatever that script's called)
>> dump core when run against today's CVS built against a release Python.
>> So I think there may be real problems here.
>
> Do you by any change have a machine without a G4 processor? 

Yes...

> The setup.py also sets some flags for G4 specific compilation. Those
> will also be removed.

Thanks.  I thought I'd hacked them out too, but maybe not.  I did get
some "Illegal Instruction" crashes as well, which was perhaps a
clue...

> I'm currently rebuilding PyObjC to check for problems. One thing you
> might try is removing the existing PyObjC installation before
> installing a new one (if you have one installed). In my quest (sp?)
> for  faster loading times I've moved some of the extensions.

I think I may have made this mistake as well yesterday.

Last night I built a fresh PyObjC and actually used it successfully,
so the problems can't be that severe.  I didn't dare run the tests,
though :-) (I had a bad day wrt computers yesterday).

Cheers,
mwh

-- 
40. There are two ways to write error-free programs; only the third
    one works.
  -- Alan Perlis, http://www.cs.yale.edu/homes/perlis-alan/quotes.html