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?

-- 
With best regards!