|Message: Re: How to implement random engines in GEANT4 projects?||Not Logged In (login)|
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Geant4 requires CLHEP as an external dependency and CLHEP_BASE_DIR must point to a valid CLHEP installation, or the build procedure will fail.
If your colleagues built Geant4 using the recommended procedures, you should be able to setup the Geant4 environment as follows, assuming you are on Linux using g++.
Otherwise, find out what setup scripts your group is using for their Geant4 environment.
I'm not sure why the Geant4 build system does not check upfront that CLHEP_BASE_DIR is set in the environment before proceeding. The errors you receive when it isn't set can certainly be confusing.
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