2011/1/7 Benjamin Nortier <bjnort...@gmail.com>
> Hello
Hi Benjamin,
I read you post on the pythonocc website, and I had time this afternoon to
check what's wrong and find a fix.
>
> I've been going back and forth with this, so any help would be appreciated.
> To date:
> - I'm using 64-bit fink and installed qt4-x11 and PyQt with that
> - I've tried PyQt from source using MacOSX python, but it's broken
> - I can either use MacOSX python, but get
>
> >>> from PyQt4.QtCore import *
> Traceback (most recent call last):
> File "<stdin>", line 1, in <module>
> ImportError:
> dlopen(/sw64/lib/qt4-x11/lib/python2.6/site-packages/PyQt4/QtCore.so, 2):
> Symbol not found: __PyByteArray_empty_string
> Referenced from:
> /sw64/lib/qt4-x11/lib/python2.6/site-packages/PyQt4/QtCore.so
> Expected in: flat namespace
> in /sw64/lib/qt4-x11/lib/python2.6/site-packages/PyQt4/QtCore.so
>
You can't use the fink PyQt4 with Mac python.
> I've tried compiling PyQt4 from source with no luck.
>
I did it once, but I had to hack the PyQt4 code. Rather use fink
(PyQt4/python).
>
> OR
>
> use the fink python, but then
>
> $python2.6
> Python 2.6.6 (r266:84292, Jan 6 2011, 17:38:55)
> [GCC 4.2.1 (Apple Inc. build 5664)] on darwin
> Type "help", "copyright", "credits" or "license" for more information.
> >>> from OCC.Display.SimpleGui import *
> >>> from PyQt4.QtCore import *
> >>> set_backend('qt')
> >>> display, start_display, add_menu, add_function_to_menu = init_display()
> Fatal Python error: Interpreter not initialized (version mismatch?)
> Abort trap
>
> I suspect this error is because of the SWIG files and would like to rebuild
> pythonOCC with the fink python. Is this plausible, and how do I re-generate
> the SWIG files? I think I have all the dependencies. I have tried python2.6
> generate_swig_files.py but it generates some cryptic errors.
>
The pythonocc setup.py script actually links the library to the Mac python
libpython2.6.dylib (and I absolutely don't know why!). I reproduced the
issue:
macbook-pro-de-thomas-paviot:OCC thomas$ /sw/bin/python2.6
Python 2.6.6 (r266:84292, Jan 7 2011, 13:42:58)
[GCC 4.2.1 (Apple Inc. build 5664)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import _Standard
Fatal Python error: Interpreter not initialized (version mismatch?)
Abort trap
You can see that the libpython linked to _Standard.so is not the good one:
macbook-pro-de-thomas-paviot:OCC thomas$ otool -L _Standard.so
_Standard.so:
/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version
125.2.1)
/usr/lib/libstdc++.6.dylib (compatibility version 7.0.0, current version
7.9.0)
/System/Library/Frameworks/Python.framework/Versions/2.6/Python
(compatibility version 2.6.0, current version 2.6.1)
/Library/OpenCASCADE/6.3.0//lib/libBinLPlugin.0.dylib (compatibility
version 1.0.0, current version 1.0.0)
The third line should point to /sw/lib/python2.6/config/libpython2.6.dylib.
So you have to tell the installer to link pythonocc to the fink
libpython2.6.dylib. I tried with LD_LIBRARY_PATH env var, but didn't get
anything working. So here is a fix. Assuming that you downloaded
pythonOCC-0.4.tar.gz:
- uncompress the tar.gz archive
- cd to pythonOCC-0.4/src
- edit the setup.py file and change the line 383:
library_dirs=[environment.OCC_LIB,environment.SALOME_GEOM_LIB,environment.SALOME_SMESH_LIB],
to
library_dirs=['/sw/lib/python2.6/config',environment.OCC_LIB,environment.SALOME_GEOM_LIB,environment.SALOME_SMESH_LIB],
- recompile pythonocc (/sw/bin/python2.6 setup.py build -f)
After that, it works:
macbook-pro-de-thomas-paviot:OCC thomas$ /sw/bin/python2.6
Python 2.6.6 (r266:84292, Jan 7 2011, 13:42:58)
[GCC 4.2.1 (Apple Inc. build 5664)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import _Standard
>>> import _MMgt
>>> import _Quantity
>>>
> Any help would be appreciated
>
> Thanks
> Benjamin
>
>
Best Regards,
Thomas
>
> --
> Benjamin Nortier
> bjnort...@gmail.com
> http://www.twitter.com/bjnortier
> http://www.1011ltd.com
> +44 (0)778 946 1959
>
>
>
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