<div dir="ltr"><div>Hi Ronald,</div><div><br></div><div>Use the following:</div><div><br></div><div>target_link_libraries(${PROJECT_NAME}PythonD ${PROJECT_NAME} vtkWrappingPythonCore)</div><div><br></div><div>You might also have to add vtkWrappingPythonCore to the components for find_package(VTK).</div><div><br></div><div> - David</div><div><br></div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Oct 9, 2017 at 8:34 PM, Ronald Römer <span dir="ltr"><<a href="mailto:rroemer@gmail.com" target="_blank">rroemer@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div dir="ltr"><div><div><div><div><div><div>Hello,<br><br></div>I'm trying to fix a problem with the python wrapper of my library. In my CMakeLists.txt there are the following lines:<br></div><div><br></div><div>find_package(VTK
 REQUIRED COMPONENTS vtkFiltersSources vtkIOLegacy vtkFiltersExtraction 
vtkFiltersGeometry vtkFiltersModeling vtkRenderingFreeType NO_MODULE)<br><br>include(${VTK_USE_FILE})<br></div><div><br>if(VTK_WRAP_PYTHON)<br>    find_package(PythonLibs 2.7 REQUIRED)<br><br>    if(PYTHONLIBS_FOUND)<br><br>        include_directories(${PYTHON_<wbr>INCLUDE_DIRS} ${PROJECT_SOURCE_DIR})<br><br>        include(vtkWrapPython)<br><br>        vtk_wrap_python3(${PROJECT_<wbr>NAME}Python ${PROJECT_NAME}Python_srcs vtkPolyDataBooleanFilter.cxx)<br><br>        add_library(${PROJECT_NAME}<wbr>PythonD ${${PROJECT_NAME}Python_srcs})<br>        target_link_libraries(${<wbr>PROJECT_NAME}PythonD ${PROJECT_NAME})<br><br>        add_library(${PROJECT_NAME}<wbr>Python MODULE ${PROJECT_NAME}PythonInit.cxx)<br>        target_link_libraries(${<wbr>PROJECT_NAME}Python ${PROJECT_NAME}PythonD)<br><br>    endif()<br>endif()<br><br></div>When
 I try to import the module into a python script, I get an import error 
about undefined symbols like PyVTKObject_Type. After a little research 
with nm I found out that the shared object is not linked to 
libvtkWrappingPython27Core. Here are the first lines of it:<br><br></div>U PyBool_FromLong<br>U PyDict_SetItemString<br>U PyErr_Occurred<br>U PyInt_FromLong<br>U PyModule_GetDict<br>U PyString_FromString<br>0000000000003020 T PyVTKAddFile_<wbr>vtkPolyDataBooleanFilter<br>U PyVTKClass_New<br>U PyVTKClass_Type<br>U PyVTKClass_<wbr>vtkPolyDataAlgorithmNew<br><br></div>How to fix this? There is no documentation about the the python wrapper, except <a href="https://www.vtk.org/Wiki/VTK/Python_Wrapping_FAQ" target="_blank">https://www.vtk.org/Wiki/VTK/<wbr>Python_Wrapping_FAQ</a>.<br><br></div>I'm actually using VTK 6.3 and my library can be found on <a href="https://github.com/zippy84/vtkbool" target="_blank">https://github.com/zippy84/<wbr>vtkbool</a>.<br><br></div>Best regards</div><span class="gmail-HOEnZb"><font color="#888888"><div>Ronald<br></div></font></span></div>
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