This is DABC-specific part for the HYDRA2

1.Installation.

Checkout in $HADDIR directory:
   [shell] cd $HADDIR
   [shell] svn co https://subversion.gsi.de/dabc/hydra2 dabc
     
Add in $HADDIR/Makefile following lines:

   ifdef DABCSYS
   MODULES += dabc
   endif

After . dabclogin ( or . trb3login) (re)compile hydra2

   [shell] cd $HADDIR
   [shell] make; make install

Here one could read how DABC/Go4/Stream can be installed with
existing ROOT installation

   http://dabc.gsi.de/doc/dabc2/hadaq_trb3_package.html