[vtk-developers] NULL always returned from vtkPolyDataMapper::New()

[Cory Quammen]

Oops, didn't notice this before, but your best bet to avoid linker
errors with VTK is to have the line

target_link_libraries(test ${VTK_LIBRARIES})

It might link in unnecessary VTK libraries, but you can turn off
unneeded modules in CMake if it's a problem.

Cory

On Mon, Nov 12, 2012 at 4:22 PM, Kyle Lutz <kyle.lutz at kitware.com> wrote:
> Well, I guess I figured it out. My CMakeLists now looks like this:
>
> find_package(VTK REQUIRED)
> include_directories(${VTK_INCLUDE_DIRS})
> include(${VTK_USE_FILE})
>
> add_executable(test main.cpp)
> target_link_libraries(test vtkRenderingCore vtkInteractionStyle
> vtkRenderingFreeTypeOpenGL vtkRenderingOpenGL)
>
> Thanks for your help guys!
>
> -kyle
>
> On Mon, Nov 12, 2012 at 1:20 PM, Kyle Lutz <kyle.lutz at kitware.com> wrote:
>> After adding "include(${VTK_USE_FILE})" right after
>> "include_directories(${VTK_INCLUDE_DIRS})" I now get the following
>> linker errors:
>>
>> CMakeFiles/test.dir/main.cpp.o: In function `vtkRenderingCore_AutoInit':
>> /home/kyle/VTK/build/Rendering/Core/vtkRenderingCoreModule.h:44:
>> undefined reference to `vtkInteractionStyle_AutoInit_Construct()'
>> /home/kyle/VTK/build/Rendering/Core/vtkRenderingCoreModule.h:44:
>> undefined reference to
>> `vtkRenderingFreeTypeOpenGL_AutoInit_Construct()'
>> /home/kyle/VTK/build/Rendering/Core/vtkRenderingCoreModule.h:44:
>> undefined reference to `vtkRenderingOpenGL_AutoInit_Construct()'
>> CMakeFiles/test.dir/main.cpp.o: In function `~vtkRenderingCore_AutoInit':
>> /home/kyle/VTK/build/Rendering/Core/vtkRenderingCoreModule.h:44:
>> undefined reference to `vtkInteractionStyle_AutoInit_Destruct()'
>> /home/kyle/VTK/build/Rendering/Core/vtkRenderingCoreModule.h:44:
>> undefined reference to
>> `vtkRenderingFreeTypeOpenGL_AutoInit_Destruct()'
>> /home/kyle/VTK/build/Rendering/Core/vtkRenderingCoreModule.h:44:
>> undefined reference to `vtkRenderingOpenGL_AutoInit_Destruct()'
>> collect2: ld returned 1 exit status
>>
>> :-(. Any other ideas?
>>
>> -kyle
>>
>> On Mon, Nov 12, 2012 at 1:16 PM, David Doria <daviddoria at gmail.com> wrote:
>>> On Mon, Nov 12, 2012 at 4:09 PM, Kyle Lutz <kyle.lutz at kitware.com> wrote:
>>>>
>>>> Hello everyone,
>>>>
>>>> I'm trying to write a small reproducible test case for a bug I'm
>>>> working on but I can't even get a simple visualization pipeline
>>>> running. When I try to create a vtkPolyDataMapper I always get NULL
>>>> returned. I've looked through the wiki and at the VTK6 migration guide
>>>> but can't find anything related to what I'm seeing.
>>>>
>>>> I'm sure I'm doing something wrong but I can't seem to figure out:
>>>>
>>>> === main.cpp ===
>>>> #include <cassert>
>>>> #include <vtkPolyDataMapper.h>
>>>>
>>>> int main()
>>>> {
>>>>   vtkPolyDataMapper *mapper = vtkPolyDataMapper::New();
>>>>   assert(mapper != 0);
>>>>   return 0;
>>>> }
>>>>
>>>> === CMakeLists.txt ===
>>>> find_package(VTK REQUIRED)
>>>> include_directories(${VTK_INCLUDE_DIRS})
>>>>
>>>> add_executable(test main.cpp)
>>>> target_link_libraries(test vtkRenderingCore)
>>>>
>>>> Platform: Ubuntu Linux, 64-bit, GCC 4.6.3, VTK from gerrit/master (as
>>>> of this morning)
>>>>
>>>> I've also tried changing the link line to ${VTK_LIBRARIES} (which
>>>> gives the same assertion error) and vtkHybrid (which gives a
>>>> "-lvtkHybrid" not found error when linking).
>>>>
>>>> Any help would be greatly appreciated.
>>>>
>>>> Thanks,
>>>> Kyle
>>>
>>>
>>> I don't know if this would cause the problem, but a line I always use
>>> and that is absent in your CMakeLists.txt is:
>>>
>>> include(${VTK_USE_FILE})
>>>
>>> David
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-- 
Cory Quammen
Research Associate
Department of Computer Science
The University of North Carolina at Chapel Hill