Public bug reported:
ImageJ fails to run on an amd64 system if ia32-sun-java6-bin is installed. It
fails with the error message
> Running a 64-bit JVM is not supported on this platform.
This seems to be due to the script /usr/bin/imagej setting JAVA_HOME by
JAVA_HOME=$(/usr/sbin/update-java-alternatives -l java-6-openjdk | head -1 |
cut -d' ' -f 3)
i.e. the top line returned from 'update-java-alternatives -l'. This happens to
be ia32-java-6-sun, even though /etc/alternatives/java points to
/usr/lib/jvm/java-6-openjdk/jre/bin/java. The script then finds out using
'uname -m' that it is a 64 bit architecture, and therefore passes '-d64' to
java. This would work on a 64 bit jvm, but not on the 32 bit jvm chosen by the
script.
I guess update-java-alternatives is not the correct way to determine the
default java home. I don't know the correct approach, but this seems to work
for me:
JAVA_HOME=$(dirname $(dirname $(dirname $(readlink /etc/alternatives/java))))
Also, I guess the script strictly should make sure it's a 64 bit jvm
instead of just using 'uname -m'
** Affects: imagej (Ubuntu)
Importance: Undecided
Status: New
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ImageJ chooses wrong java home
https://bugs.launchpad.net/bugs/294753
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