libxml2 and png cmake config point to build dir after cpack install
Superbuild tag v5.6.1-py3 and paraview tag v5.6.1
When linking to vtk in this build, I am unable to find libxml2. I get the error:
make[2]: *** No rule to make target `/tmp/pflarr/paraview-builds/toss3/snow/sdk/5.6.1-py3-osmesa_intel-18.0.2_openmpi-2.1.2_python-system3/install/lib/libpng.so', needed by `tools/fortranbinding/fortranbinding'. Stop.
It looks for the library in the build directory, which doesn't exist, instead of the cpack install location. In their lib/cmake/paraview-5.6/Modules/.cmake files, the _LIBRARIES variable is still set to the build directory after the cpack install.