Python 2.7.1 does not start when "./configure" is used with "--prefix" != "--exec-prefix"

[hoel]

BPO	11171
Nosy	@warsaw, @birkenfeld, @tarekziade, @merwok

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = 'https://github.com/warsaw'
closed_at = <Date 2011-02-14.20:05:09.276>
created_at = <Date 2011-02-10.13:47:45.545>
labels = ['type-bug', 'library']
title = 'Python 2.7.1 does not start when "./configure" is used with "--prefix" != "--exec-prefix"'
updated_at = <Date 2011-10-09.07:16:56.183>
user = 'https://bugs.python.org/hoel'

bugs.python.org fields:

activity = <Date 2011-10-09.07:16:56.183>
actor = 'eric.araujo'
assignee = 'barry'
closed = True
closed_date = <Date 2011-02-14.20:05:09.276>
closer = 'barry'
components = ['Distutils', 'Distutils2']
creation = <Date 2011-02-10.13:47:45.545>
creator = 'hoel'
dependencies = []
files = []
hgrepos = []
issue_num = 11171
keywords = []
message_count = 9.0
messages = ['128292', '128434', '128437', '128572', '129326', '129328', '129549', '145219', '145227']
nosy_count = 6.0
nosy_names = ['barry', 'georg.brandl', 'hoel', 'tarek', 'eric.araujo', 'python-dev']
pr_nums = []
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue11171'
versions = ['Python 2.7']

[hoel]

I do get (with 2.7.1):

> python
Traceback (most recent call last):
  File "/usr/local/gltools/python/Python-2.7/lib/python2.7/site.py", line 553, in <module>
    main()
  File "/usr/local/gltools/python/Python-2.7/lib/python2.7/site.py", line 535, in main
    known_paths = addusersitepackages(known_paths)
  File "/usr/local/gltools/python/Python-2.7/lib/python2.7/site.py", line 268, in addusersitepackages
    user_site = getusersitepackages()
  File "/usr/local/gltools/python/Python-2.7/lib/python2.7/site.py", line 243, in getusersitepackages
    user_base = getuserbase() # this will also set USER_BASE
  File "/usr/local/gltools/python/Python-2.7/lib/python2.7/site.py", line 233, in getuserbase
    USER_BASE = get_config_var('userbase')
  File "/usr/local/gltools/python/Python-2.7/lib/python2.7/sysconfig.py", line 535, in get_config_var
    return get_config_vars().get(name)
  File "/usr/local/gltools/python/Python-2.7/lib/python2.7/sysconfig.py", line 434, in get_config_vars
    _init_posix(_CONFIG_VARS)
  File "/usr/local/gltools/python/Python-2.7/lib/python2.7/sysconfig.py", line 287, in _init_posix
    raise IOError(msg)
IOError: invalid Python installation: unable to open /usr/local/gltools/python/Python-2.7/lib/python2.7/config/Makefile (No such file or directory)

The Makefile is platform dependendent und is located at

/usr/local/gltools/python/Python-2.7/linux_x86_64/lib/python2.7/config/Makefile

This problem is fixed for me by a simple pach:

diff -c /usr/local/gltools/python/Python-2.7/lib/python2.7/sysconfig.py /usr/local/gltools/python/Python-2.7/lib/python2.7/sysconfig.py~
*** /usr/local/gltools/python/Python-2.7/lib/python2.7/sysconfig.py 2011-02-10 14:33:34.000015000 +0100
--- /usr/local/gltools/python/Python-2.7/lib/python2.7/sysconfig.py~ 2011-02-10 14:28:17.001245000 +0100

---

*** 271,277 ****
def _get_makefile_filename():
if _PYTHON_BUILD:
return os.path.join(_PROJECT_BASE, "Makefile")
! return os.path.join(get_path('platstdlib'), "config", "Makefile")

def _init_posix(vars):
--- 271,277 ----

  def _get_makefile_filename():
      if _PYTHON_BUILD:
          return os.path.join(_PROJECT_BASE, "Makefile")
!     return os.path.join(get_path('stdlib'), "config", "Makefile")
  
  
  def _init_posix(vars):

[warsaw]

The suggested change works for me, both when prefix == exec_prefix and when it doesn't. All standard tests pass, so the fix should be committed. I'm holding off on doing that to see whether it's applicable to other versions, though if 3.2 is affected, Georg will have to pronounce on the patch. (My opinion is that it can easily wait for 3.2.1).

[birkenfeld]

That is my opinion as well.

[warsaw]

Fixed in release27-maint: r88422

I am unable to reproduce in Python 3.1 (which does not have the sysconfig module) or 3.2 (which uses a different build-flags specific location for its Makefile).

[merwok]

Barry, could you try reproducing with distutils.sysconfig?

[warsaw]

On Feb 25, 2011, at 12:35 AM, Éric Araujo wrote:

Éric Araujo <merwok@netwok.org> added the comment:

Barry, could you try reproducing with distutils.sysconfig?

I'm not quite sure what you mean, but configuring Python 3.1 with different
--prefix and --exec-prefix works just fine.