If you're using linux just do a (you must have QT 2.1, or later, installed with $QTDIR pointing at the right path, se www.trolltech.com for more information about QT):

make
make install

If you're using another operatingsystem you probably need tmake (you find it att www.trolltech.com).
After you have set up tmake properly just do a:

tmake eonslp.pro -o Makefile
make
make install