The instructions are identical to those for Ubuntu 13.04.

Compile Gxsm-2.0 and Gxsm-Manual on Debian 7.0 'Wheezy'

This recipe was created on Lubuntu 13.04, but has been successfully executed in 'Wheezy'.

As root install these packages:

apt-get install cvs texlive autotools-dev libnetcdf-dev gnome-common libglib2.0-dev libgnomeui-dev libgtk-3-dev libquicktime-dev libgtkglext1-dev freeglut3-dev libfftw3-dev python2.7-dev bison byacc libnetcdfc7 libglib2.0-0 libglib2.0-bin libgnomeui-0 libgnomeui-common libgtk-3-0 libgtk-3-bin libgtk-3-common libfftw3-3 libquicktime2 quicktime-utils libgtkglext1 freeglut3 libgtkmm-2.4-dev

This is supplementary material:

apt-get install grace gri python-scipy python-scientific python-numpy

As regular user run

cvs -d:pserver:anonymous@gxsm.cvs.sourceforge.net:/cvsroot/gxsm login

Press enter when a password is requested.

cvs -z3 -d:pserver:anonymous@gxsm.cvs.sourceforge.net:/cvsroot/gxsm co -P Gxsm-2.0
cvs -z3 -d:pserver:anonymous@gxsm.cvs.sourceforge.net:/cvsroot/gxsm co -P Gxsm-Manual
cd Gxsm-2.0
./autogen.sh
make
sudo make install
cd ../Gxsm-Manual
make
evince Gxsm-main.pdf

Let me know if this doesn't work out for you.