[vtkusers] Error building VTK 64-bit

[Gib Bogle]

Building VTK 5.6.0 with MinGW64-4.5 in Windows 7 I encountered the  
following error:

[ 73%] Building CXX object  
Rendering/CMakeFiles/vtkRendering.dir/vtkFreeTypeUtil
ities.cxx.obj
C:\VTK-src\Rendering\vtkFreeTypeUtilities.cxx: In function 'FT_Error  
vtkFreeType
UtilitiesFaceRequester(void*, FT_LibraryRec_*, void*, FT_FaceRec_**)':
C:\VTK-src\Rendering\vtkFreeTypeUtilities.cxx:341:68: error: cast from  
'void*' t
o 'long unsigned int' loses precision
mingw32-make[2]: ***  
[Rendering/CMakeFiles/vtkRendering.dir/vtkFreeTypeUtilities
.cxx.obj] Error 1
mingw32-make[1]: *** [Rendering/CMakeFiles/vtkRendering.dir/all] Error 2
mingw32-make: *** [all] Error 2

Is it possible to build VTK 64-bit?

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