Fix building FreeCAD with PCL (missing boost libs)
Fix building FreeCAD with PCL (missing boost libs)
Please merge the branch fix-pcl-boost. It fixes the issue of some boost libraries not being linked when building FreeCAD with PCL installed. It also adds a new option FREECAD_USE_PCL, so that FreeCAD can be built without PCL, even if PCL is installed.