Install libgeant321-2-gfortran by entering the following commands in the terminal:
sudo apt update sudo apt install libgeant321-2-gfortran
Description:
[Physics] Library for GEANT 3.21
GEANT is a framework for simulating the passage of subatomic particles through matter, for instance, particle detectors. For maximum flexibility, GEANT simulations are performed by linking FORTRAN code supplied by the user with the GEANT library, then running the resulting executable. . This package includes the libgeant321 library required by GEANT 3.21. Note that in order to compile and link programs against this library, you must also install the libgeant321-2-dev package.
Homepage: http://wwwasd.web.cern.ch/wwwasd/geant/index.html
Version: 1:3.21.14.dfsg-11build1
Section: universe/libs