Limux for PDA, PDA for linux

I'm considering buying a PDA and I think that I want linux-powered one. The device must cost no more than 350$ in USA. About 300MHz would be OK... It must have linux as OS. Multilanguage support, char-encoding/keyboard layout configuration are must-have features. I want to be able to use gcc compiler on this PDA. Also Grace or OO-Calc is needed. Also I want it to support external keyboard (PS/2).

Advices?

http://cgi.ebay.com/Sharp-Zaurus-SL-...QQcmdZViewItem

that's the only one i know of

Looks cool, but what about software portability? Would I be able to compile low-performance cross-platform desktop software on it?

Have you had a look at http://tuxmobil.org/ there's a section there on PDA's which might be of some help to you.