Yeah, you can do it, but whether you should, I don’t know. Download the latest Arnold/Linux source, then (according to this post) after installing the dependencies, you just need to change

TARGET_FMT=elf32-i386

to

TARGET_FMT=elf32-littlearm

in src/Makefile.in.

It works, for very slow values of “works”. Mind you, I was running it through a remote X session, so 2 fps is all I could have hoped for …