The Geant4 CMake build does not currently build the Xm based UI and Vis drivers. To enable this a) Add a user option to enable or disable this optional component b) Locate the Xm headers and libraries c) Configure the sources.cmake files to add the Geant4 sources that use Xm and add include_directories and linking libraries as needed.
Fixed in 9.5.0 Beta: Relevant tags: cmake-V09-04-04 interfaces-V09-04-03 vis-V09-05-07