Install libclhep2.1v5 by entering the following commands in the terminal:
sudo apt update sudo apt install libclhep2.1v5
Description:
CLHEP: A Class Library for High Energy Physics
CLHEP provides a set of HEP-specific foundation and utility classes such as random generators, physics vectors, geometry and linear algebra. . This package provides run-time library of CLHEP.
Homepage: http://proj-clhep.web.cern.ch/proj-clhep/
Version: 2.1.4.1+dfsg-1
Section: universe/science