Hi, I'm looking at learning to package java apps for Ubuntu/Debian and
came across the cdbs thingy

In there is ant.mk and ant-vars.mk and in the latter is this stanza:-

JAVA_HOME = $(shell for jh in $(JAVA_HOME_DIRS); do if [ -x
"$$jh/bin/java" ]; then \
echo $${jh}; exit 0; fi; done)
JAVACMD = $(JAVA_HOME)/bin/java

Clearly the issue is to, at compile time, find where JAVA_HOME is so
that...? But is this the best way to find JAVA_HOME and what about the
Java alternatives? The above code is going to stop at the first
/usr/lib/jvm/*/bin/java it finds and depending on the sort order of '*'
it might or might not be the best or desired choice on a system that has
several Java implementations installed.

The way Java implementations are installed a /usr/bin/java and
/usr/bin/javac exist. But ant requires knowing where JAVA_HOME is.

I don't know how to query to find the currently set Java alternative.
update-java-alternatives has --list and --set but not --current. If
that existed maybe JAVA_HOME could be something like:-

JAVA_HOME=/usr/lib/jvm/$(shell update-java-alternatives --current)

David Herron schrieb:

isn't /etc/alternatives/java what you are looking for ?

On Wed, May 21, 2008 at 03:59:59PM +0200, David Herron wrote: