Infinity plus 1!
Cool!

Now the 'write once, run anywhere' code that I write can run, um, anywhere plus 1... or something.

Xcode 2.2 is Also Universal
$ lipo -info `which gcc`
Architectures in the fat file: /usr/bin/gcc are: i386 ppc

But of course! :)
Java has been running on intel for a looong time now.

For a really good read, check out Greg Bolsinga (who used to work on the mrj team) talking about it this past summer: http://www.io.com/~bolsinga/archives/2005.html#e171

"A few years later I was extra-disclosed and had to sign a NDA (Non-Disclosure Agreement) on the Intel builds. This is when I learned that the Intel builds didn't just compile and link. They actually ran, and they ran fast! I hadn't seen java run so fast on Mac OS X before, on any hardware."

There's lots of other great stuff in that post about Metrowerks as well (he worked for them before working at Apple).

Indeed
Indeed. Evidently the whole system is up and going and has been for a while. What's interesting to me is that software coming out of Apple now is starting to ship as Universal instead of PPC-only as has been the practice up to this point.

Thanks for the link--that was a great read!

More than just Java
In 10.4.3:

$ find /bin /usr/bin | wc -l
782
$ find /bin /usr/bin -exec lipo -info '{}' \; 2>/dev/null | grep i386 | wc -l
123

It's still only about 1/6 of the binaries, but obviously Apple's doing lots of fat binary builds, even for command-line tools.

More than just Java
This is pretty interesting. Doing some more finds on my powerbook running 10.4.3, I've seen a lot more i386 fat binaries than I have ppc64. Is this also the case on G5 systems?

I see

$ find /System/Library/Frameworks -type f -perm +=x -exec lipo -info {} \; 2>/dev/null | egrep -v '^Non-fat' | egrep -c ppc64
8
$ find /System/Library/Frameworks -type f -perm +=x -exec lipo -info {} \; 2>/dev/null | egrep -v '^Non-fat' | egrep -c i386
180
$ find /System/Library/Frameworks -type f -perm +=x -exec lipo -info {} \; 2>/dev/null | egrep -c '^Non-fat'
347

and

$ find /Developer -type f -perm +=x -exec lipo -info {} \; 2>/dev/null | egrep -v '^Non-fat' | egrep -c ppc64
1
$ find /Developer -type f -perm +=x -exec lipo -info {} \; 2>/dev/null | egrep -v '^Non-fat' | egrep -c i386
114
$ find /Developer -type f -perm +=x -exec lipo -info {} \; 2>/dev/null | egrep -c '^Non-fat'
0

It'll be even more surprising when we do the same investigation and start seeing em64t or amd64.