I've built GTK+ on Solaris 8 / SPARC, it does work but will require some thought since the Solaris Xserver doesn't support the same set of extensions that the Xfree86 server does (Xrender). So you typically run into trouble building freetype and related stuff though.
I must admit, that I do no tunderstand, why a basic GUI toolkit is required to be able to to TrueType and Type1 font processing. We are not building a word processor.
Especially when it means the application will only run under Linux.
-Dave
-- Dave McGuire "I've watched Harley people throw up Cape Coral, FL on the ceiling." -Krissi