<div dir="ltr">Seems fishy to me, but in any case, I downloaded your vtkbool package and was able to build & use it with the following modifications to the CMakeLists.txt:<div><br></div><div>1) added vtkWrappingPythonCore to the COMPONENTS:</div><div><br></div><div> find_package(VTK REQUIRED COMPONENTS</div><div> vtkFiltersSources vtkIOLegacy vtkFiltersExtraction vtkFiltersGeometry vtkFiltersModeling</div><div> vtkRenderingFreeType vtkWrappingPythonCore NO_MODULE)</div><div><br></div><div>2) added vtkWrappingPythonCore and vtkCommonExecutionModelPythonD to target_link_libraries:</div><div><br></div><div> target_link_libraries(${PROJECT_NAME}PythonD ${PROJECT_NAME}</div><div> vtkWrappingPythonCore vtkCommonExecutionModelPythonD)<br></div><div><br></div><div>3) fixed the prefix and suffix for the Python module:</div><div><br></div><div> set_target_properties(${PROJECT_NAME}Python PROPERTIES PREFIX "")<br></div><div> if(WIN32)</div><div> set_target_properties(${PROJECT_NAME}Python PROPERTIES SUFFIX ".pyd")</div><div> endif()</div><div><br></div><div>After that, I built the project and loaded the module into Python:</div><div><br></div><div><div>vtkpython </div><div>vtk version 7.1.0</div><div>Python 2.7.10 (default, Oct 23 2015, 19:19:21) </div><div>[GCC 4.2.1 Compatible Apple LLVM 7.0.0 (clang-700.0.59.5)] on darwin</div><div>Type "help", "copyright", "credits" or "license" for more information.</div><div>>>> from vtkboolPython import vtkPolyDataBooleanFilter</div><div>>>> pdbf = vtkPolyDataBooleanFilter()</div><div>>>> </div></div><div><br></div><div><br></div><div>In summary, I'm not sure why you were still seeing the missing symbols after you linked to the library.</div><div><br></div><div> - David</div><div><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Oct 9, 2017 at 9:49 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:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
<div class="m_6234364206471877386moz-cite-prefix">Yes, that's right. <br><div><div class="h5">
<br>
On 10.10.2017 05:45, David Gobbi wrote:<br>
</div></div></div><div><div class="h5">
<blockquote type="cite">
<div dir="ltr">I'm just trying to make sure that we're
communicating the correct information back and forth here...
<div><br>
</div>
<div>Are you saying that after adding <span style="font-size:12.8px">vtkWrappingPythonCore to
target_link_libraries(), you were able to successfully
compile your project, but when trying to import the module
you saw unresolved symbol errors for PyVTKClass_New and
other "PyVTK_*" methods?</span></div>
<div><span style="font-size:12.8px"><br>
</span></div>
<div><span style="font-size:12.8px">The vtkWrappingPythonCore
library existed in VTK 5, as well, but it was
called vtkPythonCore back then.</span></div>
<div><span style="font-size:12.8px"><br>
</span></div>
<div><span style="font-size:12.8px"> - David</span></div>
<div><span style="font-size:12.8px"><br>
</span></div>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Mon, Oct 9, 2017 at 9:28 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:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
<div class="m_6234364206471877386m_-1998149975941547339moz-cite-prefix">There
are still undefined symbols:<br>
<br>
00000000002074e0 d DW.ref.__gxx_personality_v0<span><br>
U PyBool_FromLong<br>
U PyDict_SetItemString<br>
U PyErr_Occurred<br>
U PyInt_FromLong<br>
U PyModule_GetDict<br>
U PyString_FromString<br>
</span> 00000000000040f9 T PyVTKAddFile_vtkPolyDataBoolea<wbr>nFilter<span><br>
U PyVTKClass_New<br>
U PyVTKClass_Type<br>
U PyVTKClass_vtkPolyDataAlgorith<wbr>mNew<br>
</span> 0000000000004087 T PyVTKClass_vtkPolyDataBooleanF<wbr>ilterNew<br>
U PyVTKObject_GetObject<br>
U PyVTKObject_SetFlag<br>
U PyVTKObject_Type<br>
U Py_FatalError<br>
U Py_InitModule4_64<br>
<br>
I think it is a problem with the modularized VTK, that
is present since version 6.<br>
<br>
<a href="http://libvtkWrappingPython27Core-6.3.so" target="_blank">libvtkWrappingPython27Core-6.3<wbr>.so</a>
exists in the lib directory.
<div>
<div class="m_6234364206471877386h5"><br>
<br>
<br>
<br>
On 10.10.2017 05:18, David Gobbi wrote:<br>
</div>
</div>
</div>
<div>
<div class="m_6234364206471877386h5">
<blockquote type="cite">
<div dir="ltr">Did it fail because it didn't find
the library? Or did it fail because it still had
unresolved symbols?</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Mon, Oct 9, 2017 at
9:14 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:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
<div class="m_6234364206471877386m_-1998149975941547339m_-3134541148717504743moz-cite-prefix">I
already tried this without any success. I
have no idea what is wrong with it. You
can try to modify my code to find out the
correct necessary changes.<br>
<br>
Best regards<span class="m_6234364206471877386m_-1998149975941547339HOEnZb"><font color="#888888"><br>
Ronald</font></span>
<div>
<div class="m_6234364206471877386m_-1998149975941547339h5"><br>
<br>
<br>
On 10.10.2017 04:59, David Gobbi
wrote:<br>
</div>
</div>
</div>
<div>
<div class="m_6234364206471877386m_-1998149975941547339h5">
<blockquote type="cite">
<div dir="ltr">
<div>Hi Ronald,</div>
<div><br>
</div>
<div>Use the following:</div>
<div><br>
</div>
<div>target_link_libraries(${PROJEC<wbr>T_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_I<wbr>NCLUDE_DIRS}
${PROJECT_SOURCE_DIR})<br>
<br>
include(vtkWrapPython)<br>
<br>
vtk_wrap_python3(${PROJECT_NAM<wbr>E}Python
${PROJECT_NAME}Python_srcs vtkPolyDataBooleanFilter.cxx)<br>
<br>
add_library(${PROJECT_NAME}Pyt<wbr>honD
${${PROJECT_NAME}Python_srcs})<br>
target_link_libraries(${PROJEC<wbr>T_NAME}PythonD
${PROJECT_NAME})<br>
<br>
add_library(${PROJECT_NAME}Pyt<wbr>hon
MODULE
${PROJECT_NAME}PythonInit.cxx)<br>
target_link_libraries(${PROJEC<wbr>T_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_vtkPolyDataBoolea<wbr>nFilter<br>
U PyVTKClass_New<br>
U PyVTKClass_Type<br>
U
PyVTKClass_vtkPolyDataAlgorith<wbr>mNew<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/P<wbr>ython_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/vtk<wbr>bool</a>.<br>
<br>
</div>
Best regards</div>
<span class="m_6234364206471877386m_-1998149975941547339m_-3134541148717504743gmail-HOEnZb"><font color="#888888">
<div>Ronald<br>
</div>
</font></span></div>
</blockquote>
</div>
<br>
</div>
</div>
</blockquote>
<p><br>
</p>
</div>
</div>
</div>
</blockquote>
</div>
<br>
</div>
</blockquote>
<p><br>
</p>
</div>
</div>
</div>
</blockquote>
</div>
<br>
</div>
</blockquote>
<p><br>
</p>
</div></div></div>
</blockquote></div><br></div>