For applications not requiring Geant4 but that do require the geometry we should be able to build this without the Geant4 dependency. Default is same as before (DDG4 required) but user may turn off the requirement with the -DUSE_DDG4=OFF option.
For applications not requiring Geant4 but that do require the geometry we should be able to build this without the Geant4 dependency. Default is same as before (DDG4 required) but user may turn off the requirement with the -DUSE_DDG4=OFF option.