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The Geant4 version must be 7.1.x or SLIC will not compile.
CLHEP
CLHEP has installation instructions (http://wwwasd.web.cern.ch/wwwasd/lhc\+\+/clhep/INSTALLATION/newCLHEP-install.html) for version 1.9 and up. But you should not need them to setup the package.
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