$ sudo apt-get update
$ sudo apt-get install mkgmapgui 

mkgmapgui is installed in your system.

Make ensure the mkgmapgui package were installed using the commands given below,

$ sudo dpkg-query -l | grep mkgmapgui *

You will get with mkgmapgui package name, version, architecture and description in a table

mkgmapgui package basic information: