That's great news Paul! It looks like adding units\arm-linux\rtl folder to your path is what did the trick.

The difference between your IFDEF and mine is that mine removes support for v1.x of FPC. Only v2.x of FPC is supported now.

Could you follow the following link...
http://jedi-sdl.cvs.sourceforge.net/...?revision=1.27
and save this file as sdl.pas and use this one just to confirm 100% that it is the added path is all that is needed for v1.0 of JEDI-SDL to work with GP2X.