Code:
Checking for GTK version ...
Error: The GUI requires GTK devel packages (which were not found).
Check "configure.log" if you do not understand why it failed.
The FTP on that site is down, but I was able to get GTK+2.0 through urpmi and I'm still getting the same error.
EDIT:
I have now also tried GTK+1.2 and gotten the same result.