Cosmic ray and Geant4

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_Geant4 Version:_geant4-10-05-patch-01
_Operating System:_Fedora28
_Compiler/Version:_g++ (GCC) 8.3.1 20190223

Can someone plz guide gow to integrate my Cosmic ray shower library with Geant4?

u compile CRY
CRY has an example with GEANT4