[vtkusers] How can I use the third party module-libxml2

[Ben Boeckel]

On Mon, Aug 21, 2017 at 16:51:53 +0800, chensq wrote:
> I can find the directory of libxml2 in the thirdparty directory of vtk8.
> I tried to create a solution with cmake GUI from the cmakelists.txt under the directory of libxml2.
> But it gives me an error of Unknown CMake command "vtk_module_third_party".
> And I can??t find any option in the cmake GUI for vtk8 solution.
> Any suggestion will be very helpful.

The ThirdParty subdirectories are not usable on their own; they are
meant to be used as part of VTK. For libxml2, upstream's repository is
here:

    https://git.gnome.org/browse/libxml2/

--Ben