I’m trying to build a demo QT application using the Point Cloud Library (PCL) and its provided visualiser component (#include <pcl/visualization/pcl_visualizer.h>). I’m using Cmake for the build system. Cmake finds PCL without issue, but trying to include that header throws an error about VTK smart pointers. When I try to include VTK in my CMakeLists, I get an error about MPI components for VTK: