BUILD_DOCUMENTATION inconsistency?
We hav VTK_BUILD_DOCUMENTATION here:
vtk/CMakeLists.txt:option(VTK_BUILD_DOCUMENTATION "Build the VTK documentation" OFF)
vtk/CMakeLists.txt:if(VTK_BUILD_DOCUMENTATION)
but BUILD_DOCUMENTATION here:
vtk/Examples/Build/vtkMy/Utilities/Doxygen/CMakeLists.txt:if(BUILD_DOCUMENTATION)