To install the external packages one has to run the configure_full.sh
script in the main directory of the external packages.  All
installation is done below this directory. CBMROOT depend on this
directory layout.

To start the installtion 
  

> . ./configure.sh

In the first menu one has to decide if the packages should be installed in
debug, normal or optimization mode.
In the second menu one has to choose the compiler. Possible values are
the Intel compiler or gcc.
The compilation process takes now a while depending on the machine. 
On a P4 it is around 2 hours of compilation time. If there are errors one
can start the script again. It checks which part was allready compilled and
will not compile this again.

After everything went correct one has to download the data files for GEANT4.
These files are not included in the tarball due to their size. You can get
this files from http://geant4.web.cern.ch/geant4/support/source.

The files you need are:

G4ELASTIC1.1
G4EMLOW3.0
G4NDL3.8
PhotonEvaporation2.0
RadiativeDecay3.0

to get these files use wget

> wget http://geant4.web.cern.ch/geant4/support/source/G4ELASTIC.1.1.tar.gz
> wget http://geant4.web.cern.ch/geant4/support/source/G4EMLOW.3.0.tar.gz
> wget http://geant4.web.cern.ch/geant4/support/source/G4NDL.3.8.tar.gz
> wget http://geant4.web.cern.ch/geant4/support/source/PhotonEvaporation.2.0.tar.gz
> wget http://geant4.web.cern.ch/geant4/support/source/RadiativeDecay.3.0.tar.gz

These files has to be unpacked in the directory data below the geant4 directory or
one has to create there a symolic link to the place where the packages are located.
For PhotonEvaporation2.0 and RadiativeDecay3.0 one has to create links anyway.

> ln -s PhotonEvaporation2.0 PhotonEvaporation
> ln -s RadiativeDecay3.0 RadiativeDecay