Walt and Kenneth,

Your help with this problem is appreciated, though the problem still
persists.

What versions of java do you guys have installed?  What does "eselect
java-vm list" show on your machines?

I'm on AMD64, what architectures are you running?

Looking around, /usr/bin/java is a symlink to run-java-tool which is
working.  For example "java -version" displays an appropriate value.


Output from multiple tests of eselect, java-config, and emerge is
attached.  To summarize the attachment:

 /usr/lib/jvm reports icedtea6 and sun-jdk-1.6.0.20

 "eselect java-vm list" shows sun-jdk as active

 "eix -e --nocolor ant-core" shows ant-core installed

 "eselect java-vm set system 1" successfully changes to icedtea6

 "emerge -qv ant-junit" fails because ant-junit isn't found

 "eselect java-vm set system 2" successfully changes to sun-jdk-1.6.0.20

 "emerge -qv ant-junit" fails because ant-junit isn't found

 notice that both icedtea6 and sun-jdk-1.6.0.20 have been tried and "emerge ant-junit" fails with both


On a related note,

 "java-config -S" only works for user 'root'.  It doesn't work for an individual user, e.g. 'relson'

 "eselect java-vm set" allows system-wide setting of the vm and also has a per-user option.

 Also, eselect includes an unnecessary (but harmless) / in the sym-link, i.e.

   eselect:     current-system-vm -> /usr/lib/jvm//icedtea6
   java-config: current-system-vm -> /usr/lib/jvm/icedtea6



 On Sat, 22 May 2010 20:41:19 -0700
walt wrote:

> On 05/22/2010 01:10 PM, David Relson wrote:
> >
> >   * Unable to determine VM for building from dependencies:
> >   *   Failed to determine VM for building.
> 
> Well, I've seen those error messages more than once.  If I were
> half-a-bottle more sober, I'm sure I could remember how I fixed
> the problem.
> 
> Gentoo offers two (competing?) ways to specify the system-vm.
> 
> #eselect java-vm
> Usage: eselect java-vm <action> <options>
> Extra actions:
>    list                      List Available Virtual Machines
>    set                       Set a new system or user vm
>    show                      Show the current vm
> 
> #java-config
> Usage: java-config [options]
>    -L, --list-available-vms
>                          List available Java Virtual Machines
>    -S VM, --set-system-vm=VM
>                          Set the default Java VM for the system
> 
> I seem to recall that the important things changed by these two
> gizmos are some symlinks like, for example:
> 
> /etc/java-config-2/current-system-vm -> /usr/lib/jvm//sun-jdk-1.6/
> /usr/bin/java -> run-java-tool
> 
> Maybe I can remember more details tomorrow.
> 
> 
>