Am 11.01.2008 um 20:36 schrieb Galen Rhodes:
Absolutely. First, to understand the bug open up a Terminal window
and type the following:
java -d64 -version
Even if you're running Leopard on an Intel 64-bit processor (Core 2
Duo or Xeon) you see the following message :
Cannot run Java in 64 bit mode. Continuing in 32 bit mode.
java version "1.5.0_13"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_13-
b05-237)
Java HotSpot(TM) Client VM (build 1.5.0_13-119, mixed mode, sharing)
Which is wrong because it should be able to run in 64-bit mode.
However, if you type in the full path to the Java library like so:
/System/Library/Frameworks/JavaVM.framework/Home/bin/java -d64 -
version
Then, on Leopard running a 64-bit processor, you should see:
java version "1.5.0_13"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_13-
b05-237)
Java HotSpot(TM) 64-Bit Server VM (build 1.5.0_13-119, mixed mode)
For some reason you have to specify the path to the Java executable
in order for 64-bit mode to work.
They are different executables. The one at /System/Library/Frameworks/
JavaVM.framework/Home/bin/java is build for PPC, x86_32 and x86_64.
The one at /usr/bin/java (aka /System/Library/Frameworks/
JavaVM.framework/Versions/Current/Commands/java) is build only for PPC
and x86_32.
Ralf
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