On Dec 13, 2009, at 4:15 PM, Landon Fuller wrote: > On Dec 13, 2009, at 4:04 PM, Ray Kiddy wrote: > >> Is there any interest in packaging the OpenJDK 7 binaries into a real >> Mac OS X-compatible location? One can put them somewhere under /usr >> and make sure that /usr/bin/java points to the right version and this >> is good for server-ish things, but there may be reasons to install the >> OpenJDK 7 binaries under /System/Library/Frameworks/JavaVM.framework/ >> Versions/. There is a whole other kind of directory structure under >> there. I believe that if we want to have regular Cocoa applications >> that use java to use the OpenJDK 7 VM, it would have to be installed >> in the JavaVM.framework.... > > It's possible to register a standard VM (installed at any location) with the > Mac OS X Java tools such that you can select it as a preferred VM. > > I'm not sure if this is documented anywhere -- that's something Mike Swingler > (CC'd) probably has more information on.
There is primitive support in Mac OS X 10.6 and Java for Mac OS X 10.5 Update 6 to detect 3rd party JVMs installed in ~/Library/Java/JavaVirtualMachines, and /Library/Java/JavaVirtualMachines. The JVM has to be a bundle, with a Contents/Home/bin directory, a primary executable (usually a symlink to libjava.jnilib or libjava.dylib). It also requires an Info.plist similar to the Apple-provided JVMs, but the current OpenJDK should only advertise itself as being able to run command-line, since Applets, Web Start, and double-clickable apps will not work correctly right now. If you could provide me with a link to built OpenJDK 7 you are using as a reference, I could provide a set of steps to assemble it into a JDK bundle that would be recognized by Java Preferences and the /usr/libexec/java_home machinery. Cheers, Mike Swingler Java Runtime Engineer Apple Inc.
