I just updated my Common Lisp system, SBCL, to the latest version, 1.1.8. Between now and the last update, I had upgraded OS X to Mountain Lion. That, of course, meant that I had to reload GCC and the other command line utilities. I wrote about that the last time I had this problem. That’s fortunate because I didn’t remember how to do it.
After that, everything worked well. The compilation and tests ran without mishap. This is a big release. There’s a ton of bug fixes and enhancements that are all cataloged on the NEWS page. Paul Khuong has a nice post of one of those enhancements, SSE Intrinsics.
I say this every time I update but it bears repeating. If you’re looking for an excellent Common Lisp system, I can recommend SBCL without hesitation.