I don't know how easy it would be to port, but it uses SDL and the Atari Jaguar is pretty much a 16-bit system
WHAT?!?!?!?!
http://www.cyberroach.com/jaguarcd/pics/true0203.jpg
DO THE MATH!
Sorry, had to say/post that. Carry on.
He's not that wrong :
The main cpu of the Atari Jaguar is the Motorola 68000, which is 16-bits.
Lots of expensive parts that the main cpu cannot take advantage of.
That and many reasons is why the Jaguar has the worst hardware design i have ever seen.
(The Sega Saturn is pretty close though)
In fact, the 32X is able to push much more polygons than the Jaguar.
I think it was 30,000 polygons per 60 frames versus 15,000.
In my opinion, it would have been better if they just released the Panther instead.
Anyways, Virtual Jaguar requires an OpenGL compliant card and has dependencies to Qt.
(the SDL version is old, deprecated and ran no games properly as far as i know)
ptitseb ported it to the Pandora (using glshim) and it was not really running fullspeed.
So no Virtual Jaguar port for now, i'm focusing on Desmume right now.