cmake Geant4 examples

AliceO2Group/AliceO2 dependencies/FindGeant4.cmake :15 

find_package(Geant4 NO_MODULE)

OpenGATE/Gate CMakeLists.txt :64 

FIND_PACKAGE(Geant4 REQUIRED ui_all vis_all)

Geant4/geant4 examples/advanced/CMakeLists.txt :7 

find_package(Geant4)