Note that the references they made to XAMPP, are about XAMPP for Windows.
Succinctly put - I think you will need to compile from source, and that is probably not 'do-able' on LAMPP without a lot of knowledge/fixes.
The reason - XAMPP/LAMPP is NOT a stack, so none of the 'parts' are in the right places, nor is Linux aware that they are on the machine.
When you go to compile, I'm very unsure what will happen (probably endless errors). http://mumble.sourceforge.net/Ice#Build ... S_machines
ICE really has nothing to do with XAMMP, you need to seek advice from the developers. It may be much simpler than I think, but the fact you apparently need a build for Fedora indicates to me
you should build a stack with yum, so all the parts (including the GCC compiler) go in the right places.