OS X is FreeBSD+Mach, with an environment, and shell execs, and the rest of it. If you want to do something that you think might break on OS X, let me know, and I'll test for you, but for the most part it's just another Unix flavor. (Without X Windows by default, mind, but for that you get Quartz instead, and if you really want X, XFree86 supports it since 4.1 or so, but so far I don't use it regularly for anything other than xclock. ;-) Most Mac apps don't write to stdout (which I think is part of what they're getting at) but they certainly can. I haven't specifically tried, say, piping output to an exec, or reading it from an exec, but I don't see why it wouldn't work.
It's really just FreeBSD+Mach+a really nice couple of compatibility layers for legacy OS 9 code, plus lots of other nice libraries (including tons of stuff from NeXTStep) and Quartz and.... ok with a lot of other stuff added on. (Including hardware acceleration for Swing apps. That's pretty cool.)
I guess the upshot is: don't worry. Java development for OS X is so much more line standard Unix-oriented Java development than, say, Java development on Windows. (Even *with* the Cygnus stuff.) It just has a nicer UI than, say, Solaris. ;-)
Look at the 1.3 and 1.3.1 release notes for relevant stuff. They've done a pretty good job of keeping things compatible. The add-ons are all designed to degrade gracefully.
Cheers, -Ian
On Wednesday, May 22, 2002, at 12:58 AM, Stefan Bodewig wrote:
While browsing through the docs at <http://developer.apple.com> I stumbled over this (among other things on the same page that look scary to me): <http://developer.apple.com/technotes/tn/tn1168.html#Section5>
Especially
the Mac OS has no notion of text streams attached to applications, so it's meaningless to try to access them. MRJ just returns null if you ask Process for a stream associated with a normal app.
sounds as if we should take care of this when attaching stream pumpers in Execute. Also this implies that the output attribute of <exec> doesn't work on MacOS at all (note on the same page that they've implemented a special hack if you spawn Java). Is this true? Does it apply to MacOS < 10 only?
I think we need some help from somebody more familar with Macs.
Stefan
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