How to determine $JDK_HOME ?

[Peter Lemenkov]

Hello All!
Subj.
Just found that on x86  and ppc OpenJDK-devel installs into
"/usr/lib/jvm/java-1.6.0-openjdk", on x86_64 - into
"/usr/lib/jvm/java-1.6.0-openjdk.x86_64", and on ppc64 - into
"/usr/lib/jvm/java-1.6.0-openjdk.ppc64".

Is it intentional, or this is a bug? In any case how can I pass JDK
home to buildscripts w/o ugly %ifarch/else?

[Conrad Meyer]

On Sunday 07 December 2008 12:05:35 pm Peter Lemenkov wrote:
> Hello All!
> Subj.
> Just found that on x86  and ppc OpenJDK-devel installs into
> "/usr/lib/jvm/java-1.6.0-openjdk", on x86_64 - into
> "/usr/lib/jvm/java-1.6.0-openjdk.x86_64", and on ppc64 - into
> "/usr/lib/jvm/java-1.6.0-openjdk.ppc64".
>
> Is it intentional, or this is a bug? In any case how can I pass JDK
> home to buildscripts w/o ugly %ifarch/else?
>
> --
> With best regards!

Well, we also use alternatives to handle choosing the java version to use. If 
JDK_HOME is just supposed to contain 'bin/javac' then you can set it 
to '/usr'.

[Nicolas Mailhot]

Le dimanche 07 décembre 2008 à 12:11 -0800, Conrad Meyer a écrit :
> On Sunday 07 December 2008 12:05:35 pm Peter Lemenkov wrote:
> > Hello All!
> > Subj.
> > Just found that on x86  and ppc OpenJDK-devel installs into
> > "/usr/lib/jvm/java-1.6.0-openjdk", on x86_64 - into
> > "/usr/lib/jvm/java-1.6.0-openjdk.x86_64", and on ppc64 - into
> > "/usr/lib/jvm/java-1.6.0-openjdk.ppc64".
> >
> > Is it intentional, or this is a bug? In any case how can I pass JDK
> > home to buildscripts w/o ugly %ifarch/else?
> Well, we also use alternatives to handle choosing the java version to use. If 
> JDK_HOME is just supposed to contain 'bin/javac' then you can set it 
> to '/usr'.

The "jre" alternative controls access to the default system jre, and the
"java" alternative does the same for the full jdk

[Colin Walters]

On Sun, Dec 7, 2008 at 3:05 PM, Peter Lemenkov  wrote:
> In any case how can I pass JDK
> home to buildscripts w/o ugly %ifarch/else?

First, try to make scripts not reliant on the presence of the
JAVA_HOME environment variable.  It should be enough to simply invoke
"java" to get a JVM.

However, if you need it, simply wrap invocations to the scripts with
JAVA_HOME=/etc/alternatives/jre
which uses the alternatives system to point to the system-preferred JRE.

[Peter Lemenkov]

2008/12/7, Colin Walters :
> On Sun, Dec 7, 2008 at 3:05 PM, Peter Lemenkov  wrote:
> > In any case how can I pass JDK
> > home to buildscripts w/o ugly %ifarch/else?
> First, try to make scripts not reliant on the presence of the
>  JAVA_HOME environment variable.  It should be enough to simply invoke
>  "java" to get a JVM.

I'll do.
> However, if you need it, simply wrap invocations to the scripts with
>  JAVA_HOME=/etc/alternatives/jre
>  which uses the alternatives system to point to the system-preferred JRE.

Thanks! It's working.

[Brennan Ashton]

On Sun, Dec 7, 2008 at 12:05 PM, Peter Lemenkov  wrote:
> Hello All!
> Subj.
> Just found that on x86  and ppc OpenJDK-devel installs into
> "/usr/lib/jvm/java-1.6.0-openjdk", on x86_64 - into
> "/usr/lib/jvm/java-1.6.0-openjdk.x86_64", and on ppc64 - into
> "/usr/lib/jvm/java-1.6.0-openjdk.ppc64".
>
> Is it intentional, or this is a bug? In any case how can I pass JDK
> home to buildscripts w/o ugly %ifarch/else?
>
> --
> With best regards!

Everything that I have been building, I have been doing without
requiring any of the java environment variables, the way it is setup
right now it should JustWork tm if you call java javac etc.

--Brennan Ashton