[Paraview] add_executable cannot create imported target "vtkWrapPython"

[Utkarsh Ayachit]

Mathieu,

I'm not surprised that it doesnt' work. You cannot bring in VTK and
ParaView in the same project. If you project depends on both, you
should just include ParaView and you'll get access to most of VTK as
well (I can't think of anything we disable explicitly when importing
VTK, but I may be wrong).

Utkarsh

On Wed, Sep 7, 2011 at 9:29 AM, Mathieu Malaterre
<mathieu.malaterre at gmail.com> wrote:
> Hi all,
>
>  I am trying to build a paraview module. I have VTK 5.8.0 and
> ParaView 3.10.1 installed on a linux/debian machine. When importing
> both VTK & ParaView cmake module, I am getting the following errors
> (truncated):
>
> ...
> CMake Error at /tmp/pv/usr/lib/paraview/CMake/ParaViewTargets.cmake:16
> (ADD_EXECUTABLE):
>  add_executable cannot create imported target "vtkWrapPython" because
>  another target with the same name already exists.
> Call Stack (most recent call first):
>  /tmp/pv/usr/lib/paraview/ParaViewConfig.cmake:58 (INCLUDE)
>  CMakeLists.txt:3 (find_package)
>
>
> CMake Error at /tmp/pv/usr/lib/paraview/CMake/ParaViewTargets.cmake:19
> (ADD_EXECUTABLE):
>  add_executable cannot create imported target "vtkWrapPythonInit" because
>  another target with the same name already exists.
> Call Stack (most recent call first):
>  /tmp/pv/usr/lib/paraview/ParaViewConfig.cmake:58 (INCLUDE)
>  CMakeLists.txt:3 (find_package)
> ...
>
>
> It can easily be reproduced with:
>
> $ cat /tmp/bla/CMakeLists.txt
> project(bla)
> find_package(VTK REQUIRED)
> find_package(ParaView REQUIRED)
>
> Could someone please confirm this is an actual issue ? If so I'll
> report that to paraview bug tracker. Meanwhile could someone please
> suggest a fix, other than -tediously- adding blockers for each
> imported target, eg:
>
> $ cat /usr/lib/paraview/CMake/ParaViewTargets.cmake
> ...
> # Create imported target vtkWrapPython
> IF(NOT TARGET vtkWrapPython)
> ADD_EXECUTABLE(vtkWrapPython IMPORTED)
> ENDIF(NOT TARGET vtkWrapPython)
> ...
>
> This issue can also be seen when building VTKEdge (svn checkout from 20110819).
>
> Thanks much !
> --
> Mathieu
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