[vtk-developers] Error building Python wrappings of member functions that return vtkVector2i/f with VS2010

[Takuya OSHIMA]

Thanks for the inputs. Exactly the same source tree (tree id 0017782)
was used and I was not able to find a meaningful difference in
relavant class entries (vtkFreeTypeStringToImage and vtkVector2i) in
*Hierarchy.txt.

However with the comparison of the dashboard build configs and mine it
turned out that my settings of CMAKE_CXX_MP_FLAG=ON and
CMAKE_CXX_MP_NUM_PROCESSORS=8 which I thought were required to enable
a parallel build were causing the problem. With the variables unset
the build went fine.

Also as a side note, turning VTK_WRAP_PYTHON on also automatically
turned on VTK_USE_TK, which caused a CMake error as I don't have any
of Tk libraries installed. However by manually turning off VTK_USE_TK
the CMake configuration and the building process went fine, and
further vtkpython is working fine. Is Tk really required for Python
wrapping?

Takuya

Takuya OSHIMA, Ph.D.
Faculty of Engineering, Niigata University
8050 Ikarashi-Ninocho, Nishi-ku, Niigata, 950-2181, JAPAN

There was no meaningful difference in the
relevant class entries of *Hierarchy.txt 

From: David Gobbi <david.gobbi at gmail.com>
Subject: Re: [vtk-developers] Error building Python wrappings of member functions that return vtkVector2i/f with VS2010
Date: Thu, 2 Jun 2011 07:37:10 -0600

> The VTK dashboard tests the VTK 5.8 branch on VS2010 with
> Python every night and has never shown this issue.  On your
> system, the problem might be an incorrectly generated hierarchy file
> Filtering/vtkRenderingHierarchy.txt, can you open this file in an
> editor on both your Windows build and OS X build to see if the
> vtkVector2i entries are the same in each?
> 
> Also, just to confirm, do your OS X build and VS2010 build use git
> checkouts from the same date?  Because the vtkVector header file was
> recently moved into the VTK/Common directory, and that is what most
> likely triggerred this issue.
> 
>  - David
> 
> 
> On Thu, Jun 2, 2011 at 6:59 AM, Takuya OSHIMA
> <oshima at eng.niigata-u.ac.jp> wrote:
>> Hi,
>>
>> Trying to build VTK 5.8 branch head on a Windows7/VS2010 system with
>> Python wrapping ON, I am getting errors compiling Python-wrapper
>> generated code of class member functions that return vtkVector2i or
>> vtkVector2f objects.
>>
>> For example, in the Python-wrapper generated code of
>> vtkFreeTypeStringToImage, vtkFreeTypeStringToImagePython.cxx, a piece
>> of wrapping code for vtkFreeTypeStringToImage::GetBounds()
>>
>> static PyObject *
>> PyvtkFreeTypeStringToImage_GetBounds_s1(PyObject *self, PyObject *args)
>> {
>>  vtkPythonArgs ap(self, args, "GetBounds");
>>  vtkObjectBase *vp = ap.GetSelfPointer(self, args);
>>  vtkFreeTypeStringToImage *op = static_cast<vtkFreeTypeStringToImage *>(vp);
>>
>>  vtkTextProperty *temp0 = NULL;
>>  vtkUnicodeString temp1;
>>  vtkVector2i tempr;
>>  .....(snip).....
>>
>> invokes 'undefined type vtkVector2i' at the declaration of variable tempr.
>>
>> However, if I build the 5.8 branch head on OS X, the wrapping of
>> GetBounds() is omitted from the generated *Python.cxx and the whole
>> VTK builds fine.
>>
>> Any thoughts?
>>
>> Takuya
>>
>> Takuya OSHIMA, Ph.D.
>> Faculty of Engineering, Niigata University
>> 8050 Ikarashi-Ninocho, Nishi-ku, Niigata, 950-2181, JAPAN
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