[egenix-users] Egenix-mx-base install not working (with virtualenv, python 2.7 on ubuntu linux 11.04)

[M.-A. Lemburg]

M.-A. Lemburg wrote:
> M.-A. Lemburg wrote:
>> Leonardo Santagada wrote:
>>> I can't install egenix-mx-base on ubuntu, neither using easy_install
>>> [1] nor using "python setup.py install"[2]. Somehow installing using
>>> easy_install it thinks that I'm on a windows machine, which clearly is
>>> not the case[3]. Is there some workaround?
>>>
>>> [1]:
>>>
>>> $ python setup.py install
>>> running install
>>> no build data file 'build/build-py2.7_ucs4.pck' found
>>> running build
>>> running mx_autoconf
>>> error: None
>>
>> Could you investigate where the above error message originates ?
>>
>> It appears to hint to the cause of the problem.
> 
> We have doug a little deeper into this.
> 
> It appears that either virtualenv or the Ubuntu version in
> question is broken:
> 
> lemburg at ubuntu1104:~/tmp/testenv$ bin/python
> Python 2.7.1+ (r271:86832, Apr 11 2011, 18:05:24)
> [GCC 4.5.2] on linux2
> Type "help", "copyright", "credits" or "license" for more information.
>>>> import sysconfig
>>>> sysconfig.get_config_h_filename()
> Traceback (most recent call last):
>   File "<stdin>", line 1, in <module>
>   File "/usr/lib/python2.7/sysconfig.py", line 397, in get_config_h_filename
>     inc_dir = get_path('platinclude').replace("/usr/local","/usr",1)+(sys.pydebug and "_d" or "")
>   File "/usr/lib/python2.7/sysconfig.py", line 426, in get_path
>     return get_paths(scheme, vars, expand)[name]
>   File "/usr/lib/python2.7/sysconfig.py", line 417, in get_paths
>     return _expand_vars(scheme, vars)
>   File "/usr/lib/python2.7/sysconfig.py", line 172, in _expand_vars
>     _extend_dict(vars, get_config_vars())
>   File "/usr/lib/python2.7/sysconfig.py", line 457, in get_config_vars
>     _init_posix(_CONFIG_VARS)
>   File "/usr/lib/python2.7/sysconfig.py", line 310, in _init_posix
>     raise IOError(msg)
> IOError: invalid Python installation: unable to open
> /home/lemburg/tmp/testenv/local/lib/python2.7/config/Makefile (No such file or directory)
>>>>
>
> sysconfig.py was obviously patched by the Debian/Ubuntu folks
> in a way that is incompatible with the virtualenv generated
> environment.
> 
> Here's the same thing using an unpatched Python installation
> and virtualenv:
> 
> tmp/testpy27> bin/python
> Python 2.7.1 (r271:86832, Apr 19 2011, 12:07:08)
> [GCC 4.5.0 20100604 [gcc-4_5-branch revision 160292]] on linux2
> Type "help", "copyright", "credits" or "license" for more information.
> Loaded pyinteractive.py.
> 
>>>> import sysconfig
>>>> sysconfig.get_config_h_filename()
> '/home/lemburg/tmp/testpy27/include/python2.7/pyconfig.h'
>>>>
> 
> I'm afraid there's not a lot we can do, other than perhaps
> add a work-around to eGenix mx Base. Please report this to
> Ubuntu/Debian.

The fact that Python cannot read its own Makefile is a major
showstopper for any build script. I wonder why this hasn't
been corrected yet.

Without access to the Makefile settings, distutils/setuptools/
distribute have no way of finding out about compiler and linker
settings, include directories, etc.

-- 
Marc-Andre Lemburg
eGenix.com

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