No, it's not a matter of simply recompiling. The reason for this is that the AROS clib is much better (more compatible) than the one available with SAS/C (don't know about other compilers) so the AmigaOS version would require writing some compatability functions.
Also, I don't use AmigaOS very much anymore, so it's not a priority for me. If more people would be interested in an AmigaOS version, I might try to port it...