[vtkusers] VTK Python Wrapper and OS X

[Glen Lehmann]

Hello Dan,

The problem is the install_names that are associated with the installed 
libraries.  Try this;

 >> cd /usr/local/lib/vtk
 >> otool -L libvtkCommonPython

and you'll see that libvtkCommonPython is linked against the absolute 
path of the original libraries (i.e. the ones in your VTK/bin)

Attached is a script I wrote to fix this problem.  You'll need to modify 
the BUILD_PREFIX to match your VTK build location and INSTALL_PREFIX to 
/usr/local/lib/vtk.  Others have reported that this script hasn't worked 
for them on the first attempt (although it does for me) so it may need 
some massaging.

After you run it try running "otool -L" again an you'll see the 
libraries are now linked against the ones in /usr/local/lib/vtk.

Good Luck,
Glen

Dr. Daniel James White PhD wrote:

> Hi,
>
> I am using vtk  on os X 10.2 and 10.3 (built on 10.2) recent CVS
> cmake from kitware (why get it anywhere else?)
> with MacPython (different for 10.2 and 10.3 as panther contains the 
> python engine already, but not the extra bits)
> and AquaTckTk Batteries included 8.4 most recent.
>
> I am running the python vtk frontend MayaVi, using native aqua 
> interface on OSX
> but I have to run it from the VTK/bin
> directory or the compiled binaries are not found, even after
> make install.
>
> maybe you are seeing something similar.
>
> Dan
>
> On 18 Dec 2003, at 13:25, vtkusers-request at vtk.org wrote:
>
>> -__--__--
>>
>> Message: 3
>> Date: Wed, 17 Dec 2003 10:06:17 -0800
>> From: Jeremy Guralnick <jg at tachyon.net>
>> To: <vtkusers at vtk.org>
>> Subject: [vtkusers] VTK Python Wrapper and OS X
>>
>> I've been trying to get the python wrapper to work under OS X (10.2.8)
>> without success. Whether I use python or vtkpython I get the following
>> error:
>>
>> Python 2.2.2 (#1, 01/12/03, 07:51:34)
>> [GCC Apple cpp-precomp 6.14] on darwin
>> Type "help", "copyright", "credits" or "license" for more information.
>>
>>>>> import vtk
>>>>
>> Traceback (most recent call last):
>>   File "<stdin>", line 1, in ?
>>   File 
>> "/Users/jg/Tachyon/Develop/VTK/Wrapping/Python/vtk/__init__.py", line
>> 7, in ?
>>     from common import *
>>   File "/Users/jg/Tachyon/Develop/VTK/Wrapping/Python/vtk/common.py", 
>> line
>> 7, in ?
>>     from libvtkCommonPython import *
>> ImportError: Loaded module does not contain symbol 
>> _initlibvtkCommonPython
>>
>>>>>
>>
>> I've tracked this down to the file
>> ${VTK_DIR}/VTKBuild/Common/vtkCommonPythonInit.cxx, which includes the
>> missing reference from above. The problem appears to be that the build
>> process does not compile this file (no object file produced) or 
>> attempt to
>> link it (no link errors). After a build, the "Common" directory 
>> contains 301
>> ".cxx" files and 463 ".o" files including 150 object files with 
>> "Python" in
>> the filename, so a system appears to be built with the python wrapper.
>>
>> Other than python, the system otherwise works fine. I've run several 
>> of the
>> C++ and Tcl tests with no problems. I've also tried both VTK 4.2.2 
>> and 4.2.1
>> with the same result. Other data that might help are:
>>
>> cmake 1.6.6 from darwinports
>> Python 2.2.2 from fink
>> Tcl 8.4 from fink
>>
>> Any help/insight on this problem would be greatly appreciated.
>>
>> Jeremy
>>
>>
> Dr. Daniel James White BSc. (Hons.) PhD
> Cell Biology
> Department of biological and environmental science
> PO Box  35
> University of Jyväskylä
> Jyväskylä FIN 40014
> Finland
> +358 (0)14 260 4183 (work)
> +358 (0)414740463 (mob)
>
> http://www.chalkie.org.uk
> dan at chalkie.org.uk
> white at cc.jyu.fi
>
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