Re: [Python-Dev] Python 2.7 Mac universal builds seem broken on trunk

2009年9月29日 09:18:08 -0700

Ronald Oussoren wrote:
> 
>>> Use:
>>>
>>> ./configure --enable-framework --enable-universalsdk=/
>>>
>>> The --with-universal-archs flag selects whichs architectures should be
>>> included when you build a universal binary, defaulting to 32-bit.
>>
>> The Python default on 10.6 is 64-bit, so wouldn't it be better
>> to default to that on 10.6 and use 32-bit as default on 10.3/4/5 ?!
> 
> Defaulting to a 32-bit build has several advantages. The first is that
> the defaults match the binary installer on the python.org website,
What build options does that installer use ? (the web-page doesn't say)
> and
> secondly there are still 3th-party libraries that don't work in 64-bit
> mode (mostly GUI libraries, until recently Tk and wxWidgets wrapped the
> Carbon libraries which are not available in 64-bit mode; AFAIK both have
> betas that wrap the Cocoa libraries instead).
>
> To mimick the system default you'd have to default to 32-bit on 10.4,
> 4-way universal on 10.5 and 3-way universal on 10.6, and that is without
> considering deployment targets. All of those are available as options,
> I'd prefer to keep it this way for now to keep things simple.
Hmm, so I guess the only way to support them all is by building extensions
using 4-way universal on 10.5. No wonder they are called "fat" binaries ;-)
>>> I'll write some documentation on the build options on OSX, but don't
>>> know what's the best location to do so.
>>
>> Please put that information into Mac/README which already has
>> documentation for how to build universal binaries on Mac.
> 
> I know that, I wrote most of that file ;-).
Which is why I was surprised you asked :-)
>>> I guess I should also add logic to configure that bails out when you
>>> specifiy --with-universal-archs without asking for a universal build.
>>
>> That would be useful.
> 
> I've committed a patch to the trunk and 2.6 that does this.
Thanks.
-- 
Marc-Andre Lemburg
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