I crosscompiled for Haiku on Windows 7, with a few adaptations to the termios serial port ‘hooks’ as Lazarus/FPC lags in that respect making this unusable by default. I even posted a bugreport for that I remember, but I think it’s too low prio for them to even look at it.
EDIT: Hmm, OK, my fail.
Found the bugreport over at FPC:
Can someone more knowledgable than me in this respect please take over here?? I don’t know what to answer precicely!
I also created packages for lazarus on Haiku, so it indeed ran/runs on it. It’s still up on my page, and the link should still be up in the forum somewhere…
EDIT: it’s here: