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<p class="MsoNormal">Hi All,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I’m revisiting making my own external ITK module (for use in Python) after an initial attempt a while back. This time I’ve managed to get much further and have managed to successfully create python wheels following the directions on
<a href="https://github.com/InsightSoftwareConsortium/ITKPythonPackage/blob/master/docs/Build_ITK_Module_Python_packages.rst">
https://github.com/InsightSoftwareConsortium/ITKPythonPackage/blob/master/docs/Build_ITK_Module_Python_packages.rst</a> , I’ve created Windows wheels via AppVeyor and linux wheels with CircleCI in addition to locally built versions via the docker based method.
All tests are passed successfully.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">However, after installing them with pip in a fresh virtual environment in a Python 3.6 instance (Anaconda), I seem to always get a kernel crash (segmentation fault) when I try and actually use or create one of my custom filters.
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">To strip everything back to basics I generated a vanilla external module, using only default values with:
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">python -m cookiecutter gh:InsightSoftwareConsortium/ITKModuleTemplate<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I then built the wheels as described and installed them into the virtual environment.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Using the following basic python script below results in a seg fault,
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-family:"Courier New"">import itk<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New"">InputType = itk.Image[itk.F,2]<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New"">OutputType = itk.Image[itk.F,2]<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New"">test = itk.MinimalStandardRandomVariateGenerator.New()
<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I get the same result if I try and create any of the classes defined in ITKModuleTemplate, however I can successfully create standard itk filters.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">After running the script with gdb I see that it crashes in the call as follows:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-family:"Courier New"">#1 0x00007fffe7405373 in PyInit__ModuleTemplatePython () from /home/tho78s/anaconda3/lib/python3.6/site-packages/itk/Configuration/../_ModuleTemplatePython.so<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I’m currently out of ideas as to where the problem lies and I seem to get the identical problem in Windows too.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Any help or pointers in to what is going wrong would be greatly appreciated!<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I you want any extra info, feel free to contact me.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Regards,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Darren<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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