Thank you for your help. For anyone else who is trying to compile from CVS all you have to do in the console is:
cvs -d
server:anonymous@ivan.cvs.sourceforge.net:/cvsroot/ivan login
when prompted for the password just hit enter then type:
cvs -z3 -d
server:anonymous@ivan.cvs.sourceforge.net:/cvsroot/ivan co -P ivan/
there ya go! Ivan will be downloaded to your home directory in a folder named ivan.