[Python-Dev] Python 32- and 64-bit living together

M.-A. Lemburg mal at egenix.com
Fri Apr 11 22:42:09 CEST 2008

On 2008-04-11 22:25, Sérgio Durigan Júnior wrote:
> On Fri, 2008-04-11 at 22:06 +0200, M.-A. Lemburg wrote:
>>> Hmm, right. I tried to modify the installation path (using --libdir
>>> in ./configure) to /usr/lib64, but some *.pyo objects still are
>>> installed under /usr/lib. AFAIK, these objects are bitness-dependent
>>> (i.e., if they were generated by a 32-bit Python, they can only be
>>> execute by a 32-bit Python - and vice-versa), right?
>> Right.

Sorry, I misread you question. PYO and PYC files are *not* dependent
on 32/64 bit sizes.

>>> Is there any way to separate these arch-dependent files in /usr/lib
>>> and /usr/lib64 depending on their bitness?
>> There's no need for that. Only the config/ dir which is included
>> in the Python lib dir is dependent on the Python configuration.
> I'm afraid I still don't understand your point. I mean, if the *.pyo
> file *is* dependent on the bitness of the Python interpreter (as you
> confirmed in my first question), therefore when I decide to have both
> 32- and 64-bit Python on my system I *must* have two versions of
> every .pyo file: one for 32- and another for 64-bit Python. What I've
> missed?

Sorry for the confusion.

>> You should probably have a look at how RedHat or openSUSE solve
>> these problems. Some of them have patched Python to fit their
>> needs. You may have to do that as well.
> I'll sure take a look at them. Thanks!

Marc-Andre Lemburg

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