[PyKDE] PyQt - undefined symbol

[Phil Thompson]

On Saturday 19 April 2003 2:42 am, Erik Dahlgren wrote:
> I am trying to install PyKDE 3.5-2 but I am having some problems. When
> running the build.py script  I get
>
> Error: Couldn't import qt module from PyQt -- from line 725 in build.py
>
> When trying to import qt  in python I get
>
> ImportError: /usr/lib/python2.2/site-packages/libqtcmodule.so: undefined
> symbol: PyUnicodeUCS2_FromUnicode
>
> I didn't have any problems when installing PyQt (at least I don't think
> so). My system is RH8 mostly updated to RH9 with qt and kde compiled from
> Red Hat source rpms.  I have qt 3.1.2-0.8x.1 and kde 3.1.1-0.8x.1
>
> Any help would be appreciated!

To quote the Python source (Include/unicodeobject.h):

/* Unicode API names are mangled to assure that UCS-2 and UCS-4 builds
   produce different external names and thus cause import errors in
   case Python interpreters and extensions with mixed compiled in
   Unicode width assumptions are combined. */

In other words your Python interpreter has been built with Py_UNICODE_WIDE 
defined, but PyQt has been built without it defined. As PyQt picks the 
definition up from your Python installation automatically (by #including 
Python.h), it implies that your Python installation is inconsistent.

Phil