Welcome to LQ.
Quote
http://www.irisa.fr/metiss/guig/spro/download.html :
"Last modified: Mar 05, 2004, .."
Version 4.0.1 : Mainly 2003 code.
May not work with your default gcc = version 4.6.3.
Please do : sudo apt-get install g++-4.4 g++-4.5
.. Then you have much more choice : 3 times gcc / g++ versions.
Spro-4.0 should do OK with gcc-4.5. This example uses "4.4" :
cd spro-4.0/ && export CC=gcc-4.4 && ./configure && make
.