Packing jQuery plugin - jFeed

I have a modified version of the jFeed plugin and now want to pack the four source files.

There is a Makefile and some perl scripts in the download but I don't know how to use them.

This is the file structure:

\Makefile

\proxy.php

\src\jatom.js

\src\jfeed.js

\src\jfeeditem.js

\src\jrss.js

\build\packer\jsPacker.pl

\build\packer\Pack.pm

\build\packer\ParseMaster.pm

I ended up using an online packer: http://dean.edwards.name/packer/