You can find the HARK software and its installation instructions in HARK web site (http://winnie.kuis.kyoto-u.ac.jp/HARK/) You can download the installers for Windows from the site and the repositories for Ubuntu where the package exists. The source code is available in the repository.
If you are the first time to use HARK, we strongly recommend to use the windows packages. This document do not cover the installation from the source code.