Building openjdk 8 on Mac OS X

[David DeHaven]

> MacPorts lipo (it works, put it earlier on your path because hotspot build references "lipo" with no fancy variables)

The lipo problem is freaking annoying. The issue is Xcode 4 doesn't have it in the OSX toolchain, it installed the actual binary to /usr/bin/lipo. In Xcode 5 that was replaced by a stub binary that forks xcrun to find the actual tool which is now located in the Xcode Developer directory. There's a bug in the stub tool that prevents it from exiting cleanly when it can't find the actual tool, so it goes into an infinite loop of calling xcrun to find the tool and failing. Incidentally, you can apply one of the fixes below, then call "xcrun -k lipo" and if you have lipo looping infinitely in another terminal it will suddenly start working.

Unfortunately I think it's the one thing that may require manual intervention (once I get my backport of 8043340 done, which will be soon..), there's just no way around this until Apple fixes their bug.

There's three solutions to this that I don't think are too ugly:
1> Install cctools in MacPorts, though this leaves the broken /usr/bin/lipo version around to break things in the future
2> Xcode 4 has lipo in the iOS Platform Developer directory, make the following symlink (or copy the executable):
lrwxr-xr-x  1 daved  admin  56 Jan  7 12:43 /path/to/Xcode4.app/Contents/Developer/usr/bin/lipo -> ../../Platforms/iPhoneOS.platform/Developer/usr/bin/lipo
3> Copy Xcode 5's version of lipo to /usr/bin, or you could even copy it to Xcode4.app/Contents/Developer/usr/bin/lipo

Option 2 is probably the most future-proof as it allows the use of xcode-select to choose Xcode 4, even after copying to a different system (it's also scriptable!).

I'm playing around with detecting if lipo is broken, if I can detect it reliably I can change the path to use the iOS version instead (which is the same executable..). If that can be done then none of the above will be necessary. Unfortunately detecting if something hangs indefinitely (in a *clean* and reliable way) from a shell script is not trivial. I may have to resort to a perl one-liner.


IMHO, the best solution would be to remove the use of lipo entirely, since we don't and likely will never actually support universal binaries on Mac.

-DrD-