$ sudo apt-get update
$ sudo apt-get install jocaml-base 

jocaml-base is installed in your system.

Make ensure the jocaml-base package were installed using the commands given below,

$ sudo dpkg-query -l | grep jocaml-base *

You will get with jocaml-base package name, version, architecture and description in a table

jocaml-base package basic information: