[vtkusers] building VTK 7.1.0 on MSYS2: undefined references

[David Lonie]

In VTK, all of the linkages are handled by the vtk_module CMake command in
the module.cmake file of each module. The DEPENDS modules are linked to the
current module.

IIRC, you can run "make VERBOSE=1" to print out the actual gcc/ld commands
that are called, that might give you some clues.

Dave

On Mon, Nov 28, 2016 at 3:45 PM, Mario Emmenlauer <mario at emmenlauer.de>
wrote:

>
> Thanks David for the reply. Its a bit strange because 7.0.0 worked fine,
> so it must be something introduced in 7.1.0. I can also see the text
> definition of the missing symbol in vtkCommonCore, so it must be the
> missing linker command. Could you tell me how the dependency is defined
> in VTK? I would be curious to learn the build system a bit.
>
> Cheers,
>
>     Mario
>
>
>
> On 28.11.2016 17:44, David Lonie wrote:
> > According to Common/DataModel/module.cmake, vtkCommonDataModel already
> has a
> > dependency on vtkCommonCore inside of VTK. Everything should be linked
> already. Hmm.
> >
> > It's likely that the mingw support needs some love. I don't think we
> have any
> > customers that rely on it at the moment, but maybe someone can pick it
> up.
> >
> > On Fri, Nov 25, 2016 at 4:23 AM, Mario Emmenlauer <mario at emmenlauer.de
> > <mailto:mario at emmenlauer.de>> wrote:
> >
> >
> >     Dear All,
> >
> >     I've reported this issue already here:
> >     https://gitlab.kitware.com/vtk/vtk/issues/16916
> >     <https://gitlab.kitware.com/vtk/vtk/issues/16916>
> >     But I hope somebody here on the mailing list might be knowledgeable
> about
> >     how to add
> >     linker dependencies inside VTK?
> >
> >     When building VTK 7.1.0 I get an error about an undefined reference
> on
> >     MSYS2. Everything
> >     works fine on Linux. The error on MSYS2 is:
> >
> >     CMakeFiles/vtkCommonDataModel.dir/objects.a(
> vtkDataSetAttributes.cxx.obj):vtkDataSetAttributes.cxx:(.text+0x4a7c):
> >     undefined reference to
> >     `vtkAOSDataArrayTemplate<long>::FastDownCast(vtkAbstractArray*)'
> >     CMakeFiles/vtkCommonDataModel.dir/objects.a(
> vtkDataSetAttributes.cxx.obj):vtkDataSetAttributes.cxx:(.text+0x4a92):
> >     undefined reference to
> >     `vtkAOSDataArrayTemplate<long>::FastDownCast(vtkAbstractArray*)'
> >
> >     I think its required that vtkCommonDataModel links against
> vtkCommonCore? I
> >     do not
> >     know how to achieve this. I've tried various combinations to add the
> >     dependency to
> >     Common/DataModel/CMakeLists.txt but without success. How is this
> done correctly?
> >
> >     Cheers,
> >
> >         Mario
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>
>
>
> Viele Gruesse,
>
>     Mario Emmenlauer
>
>
> --
> BioDataAnalysis GmbH, Mario Emmenlauer      Tel. Buero: +49-89-74677203
> Balanstr. 43                   mailto: memmenlauer * biodataanalysis.de
> D-81669 München                          http://www.biodataanalysis.de/
>
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