On 06 Jun 2010, at 23:23, Thierry Bothorel wrote: > I started with Mathiew Mead JNI headers translation for Delphi/Kylix, > that explains libc use. I did not found any JNI headers translation for > Freepascal. Does this mean that the only solution is to update > JNI.pas so that it uses Unix units instead of libc ? Yes, indeed. Jonas