[vtkusers] Don't build vtkproj4?

[Ben Boeckel]

On Thu, Jan 11, 2018 at 11:41:40 -0600, Chris Marsh wrote:
> Thanks for the details. This doesn't seem to be working for me though. I've
> tried passing VTK_USE_SYSTEM_libproj4 to cmake on the command line as well
> as defining it as a CXXFLAG='-D VTK_USE_SYSTEM_libproj4", however neither
> works. I still see the vtklibproj4 in the output of ldd.

CMake should be getting the flag. If you do:

    grep -i proj4 CMakeCache.txt

do any variables stand out as potentially being set to use the internal
one?

--Ben