The author sent this note to the BasiliskII mailing list:
I've been spending the better part of my afternoon trying to cobble
together a port of Basilisk II to SDL2. I've been able to put together a
somewhat functional port, although there are some bugs.
If anyone is interested in it, I've posted a pre-built Mac OS X binary at
Code for this port is up at https://github.com/DavidLudwig/macemu
Feature-wise, the main thing is probably the support of Mac OS X's "Spaces"
feature. If and when Basilisk II is launched in full-screen mode, it'll
attempt to work with OS X's desktop manager, to create a separate desktop
for Basilisk II. On devices with multi-touch enabled trackpads (MacBooks,
etc.), this allows one to do a multi-finger swipe from an OS X desktop, to
a Basilisk II desktop.
There are new bugs, some of which I am aware of, many of which I probably
am not. I'll see if I can get some of the known ones fixed, when I next
have a free weekend for computer work. I'll attempt to list a few of the
known ones on Github.
-- David Ludwig