Installation notes - Linux/Unix:
Linux version with a dedicated rpm file
Install from source code ( works for all Linux distrubitions )
Alternative instructions
If the default RPM's can not be used the next best things is to build RPM's for your system using the .src.rpm download.
Superuser (root) priveleges are not needed to create the binary RPM's from the source RPM's, although it requires a little trick to do this.
Instructions for this method here
This is preferable as removing a direct binary installation is not easy and you could end up with two versions of IM installed, causing all sorts of unexpected problems.
To install GhostScript
To install fonts