First you have to do a backup of your MySQL DB.
Second download tar files from bacula website, untar them and make the ./configure, make, and make install process
./configure --sbindir=$HOME/bacula/bin --sysconfdir=$HOME/bacula/bin --with-pid-dir=$HOME/bacula/bin/working --with-subsys-dir=$HOME/bacula/bin/working --enable-smartlloc --with-mysql --with-working-dir=$HOME/bacula/bin/working --enable-bwx-console --enable-tray-monitor --mandir=$HOME/bacula/bin --with-qwt=$HOME/bacula/depkgs/qwt
(gnome console is no longer supported)
After that a few more steps
That's all, enjoy!