How do I install octave-forge CVS

[Fredrik Lingvall]

I noticed that

    make install

have been removed from octave-forge and one is
prompted to use the octave package manager instead.
I could, however, not find any instructions exactly how to
do this. I have tried this:

cd octave-forge
./autogen.sh
./configure (and some flags)
make
make package

This created some *.tar.gz files in the packages dir.
I've then tried to load these with

    pkg install audio-1.0.0.tar.gz

for example. pkg did not accept compressed arch:s so I unzip:ed it.

    pkg install audio-1.0.0.tar

I now get a warning,

    warning: You have not defined an installation prefix, so the
following will be used ...

Is this the proper method to install octave-forge, and if so, how do I
set the
installation 'prefix'? Also, is there a way to install everything
similar to what
'make install' did before?

/Fredrik