I get an error when I treid to install, i'm missing dependency libdb4.8++

What's the command to install it?

thanks.

add-apt-repository ppa:bitcoin/bitcoin     edit : not sure it's required
apt-get update
apt-get install libqrencode-dev libqrencode3 db4.8 g++ git make qt4-dev-tools qt4-qmake libdb++-dev libssl-dev libminiupnpc-dev libboost-dev libboost-system-dev libboost-filesystem-dev libboost-program-options-dev libboost-thread-dev libssl-dev libgmp-dev
apt-get install libboost-chrono1.53-dev libboost-filesystem1.53-dev libboost-system1.53-dev libboost-program-options1.53-dev libboost-thread1.53-dev

mkdir XC
cd XC

wget http://download.oracle.com/berkeley-db/db-4.8.30.NC.tar.gz
tar -xzvf db-4.8.30.NC.tar.gz
cd db-4.8.30.NC/build_unix
../dist/configure --enable-cxx
make
edit go step 3 should be ok
step 1 : sudo make install
step 2 : ln -s /usr/local/BerkeleyDB.4.8/lib/libdb_cxx-4.8.so /usr/lib/libdb_cxx-4.8.so
or
step 3 : ln -s /XC/db-4.8.30.NC/build_unix/.libs/libdb_cxx-4.8.so /usr/lib/libdb_cxx-4.8.so

mkdir XC
cd XC
wget http://xc-official.com/release/ubuntu/x11coin-ubuntu-packages/x11coin-qt_0.9.1.33-x11coin-1.0-saucy1_amd64.deb
dpkg -x x11coin-qt_0.9.1.33-x11coin-1.0-saucy1_amd64.deb  x11coin-qt_0.9.1.33-x11coin-1.0-saucy1_amd64
cd  XC/x11coin-qt_0.9.1.33-x11coin-1.0-saucy1_amd64/usr/bin/
./x11coin-qt