Problems building Python from hg trunk on Open SUSE

Date	2012-10-05 19:24 -0500
Subject	Problems building Python from hg trunk on Open SUSE
From	Skip Montanaro <skip@pobox.com>
Newsgroups	comp.lang.python
Message-ID	<mailman.1885.1349483106.27098.python-list@python.org> (permalink)

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I haven't messed around with Python 3 recently, so decided to give it
a whirl again.  I cloned the trunk (cpython) and set about it.  This
is on an OpenSUSE 12.1 system.  I configured like so:

  ./configure --prefix=/home/skipm/.linux-local

and ran the usual "make ; make install".

I'm a bit perplexed about how it is installed.  Instead of installing
shared objects in

  /home/skipm/.linux-local/lib/python3.4/lib-dynload

they were installed in

/home/skipm/.linux-local/lib64/python3.4/lib-dynload

(note the "lib64" vs. "lib").  This would be fine, except sys.path
doesn't include the "lib64" version of this path:

% PYTHONPATH= PYTHONSTARTUP= ~/.linux-local/bin/python3.4 -S
Could not find platform dependent libraries <exec_prefix>
Consider setting $PYTHONHOME to <prefix>[:<exec_prefix>]
Python 3.4.0a0 (default:26200f535296, Oct  3 2012, 12:48:07)
[GCC 4.4.6 [TWW]] on linux
>>> import sys
>>> sys.path
['', '', '/home/skipm/.linux-local/lib/python34.zip',
'/home/skipm/.linux-local/lib/python3.4/',
'/home/skipm/.linux-local/lib/python3.4/plat-linux',
'/home/skipm/.linux-local/lib/lib-dynload']

I see the message about setting PYTHONHOME.  (That happens to be bad
advice as sys.prefix and sys.exec_prefix are identical in this case.)
What I don't understand is why directories containing "lib64" are not
in sys.path by default, given that that's where "make install" put
things.

GCC is as delivered by The Written Word.  (This is a work computer.
The powers that be settled on TWW awhile ago for packaging all open
source software we use on Linux and Solaris, thus removing a headache
from our support staff.)  It is:

% gcc --version
gcc (GCC) 4.4.6 [TWW]
Copyright (C) 2010 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

The architecture looks like this:

% uname -a
Linux udesktop264 3.1.0-1.2-desktop #1 SMP PREEMPT Thu Nov 3 14:45:45
UTC 2011 (187dde0) x86_64 x86_64 x86_64 GNU/Linux

I don't see anything in the output of "./configure --help" which
relates to 64-bit install directories, though I do see some lines in
config.log about guessing the architecture.  Some cursory googling
didn't turn up any promising web pages, and I didn't find anything in
the various documentation files in the repo related to building
Python.

Any suggestions about how to resolve this would be appreciated.

Thx,

Skip

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Thread

Problems building Python from hg trunk on Open SUSE Skip Montanaro <skip@pobox.com> - 2012-10-05 19:24 -0500
  Re: Problems building Python from hg trunk on Open SUSE 88888 Dihedral <dihedral88888@googlemail.com> - 2012-10-07 10:01 -0700
  Re: Problems building Python from hg trunk on Open SUSE 88888 Dihedral <dihedral88888@googlemail.com> - 2012-10-07 10:01 -0700

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