Geant4 install error

Hello Dear geant4 user !
I’m trying to install geant4 but I got some the error message below. Someone can help me to fix it.
Thank.

You don’t have the needed permissions on the directory under which geant4 is going to be installed. /opt is by default owned by the root user.

Either do sudo make install, adjust the permissions of /opt so your account can write to it, or install Geant4 in a directory you have write permissions for.

ok and thank for your answer !

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