[issue10764] sysconfig and alternative implementations

[Michael Foord]

New submission from Michael Foord <michael at voidspace.org.uk>:

sysconfig assumes there will be a makefile if the platform is posix, which isn't always true. For example IronPython on Mac OS X with mono.

This leads to a traceback on startup with IronPython 2.7:

$ ipy27
Traceback (most recent call last):
  File "/Second/michael/Downloads/IronPython-2.7/Lib/site.py", line 548, in <module>
  File "/Second/michael/Downloads/IronPython-2.7/Lib/site.py", line 530, in main
  File "/Second/michael/Downloads/IronPython-2.7/Lib/site.py", line 264, in addusersitepackages
  File "/Second/michael/Downloads/IronPython-2.7/Lib/site.py", line 239, in getusersitepackages
  File "/Second/michael/Downloads/IronPython-2.7/Lib/site.py", line 229, in getuserbase
  File "/Second/michael/Downloads/IronPython-2.7/Lib/sysconfig.py", line 518, in get_config_var
  File "/Second/michael/Downloads/IronPython-2.7/Lib/sysconfig.py", line 421, in get_config_vars
  File "/Second/michael/Downloads/IronPython-2.7/Lib/sysconfig.py", line 275, in _init_posix
IOError: invalid Python installation: unable to open /Volumes/Second Drive/michael/Downloads/IronPython-2.7/lib/python2.7/config/Makefile (Could not find a part of the path "/Volumes/Second Drive/michael/Downloads/IronPython-2.7/lib/python2.7/config/Makefile".)IronPython 2.7 Beta 1 (2.7.0.10) on .NET 4.0.30319.1
Type "help", "copyright", "credits" or "license" for more information.
>>>

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messages: 124560
nosy: eric.araujo, michael.foord, tarek
priority: normal
severity: normal
status: open
title: sysconfig and alternative implementations
versions: Python 2.7

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue10764>
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