Here are the steps to get it compiled and working:
git clone git://gitorious.org/serverstatuswidget/serverstatuswidget.git
cd /serverstatuswidget
sudo apt-get install build-essential libqt4-core qt4-qmake libqt4-dev libqt4-gui kdelibs5-dev
cmake -DCMAKE_INSTALL_PREFIX=$(kde4-config --prefix)
sudo make
sudo make install
kbuildsycoca4