Laussy Fabrice wrote:

laussy@localhost ~/conway 16:58:02 Thu Mar 5 25$ gpc -g game.of.life.pas /tmp/cca005911.o: In function `Fileop': /home/laussy/conway/game.of.life.pas:44: undefined reference to `_p_assign'

_p_assign, I just don't know what it is, since I didn't define it, it is not due to me if that does not work!

_p_assign is the procedure of the RTS (run time system) that is called internally for Assign.

It should be included in libgpc.a -- did you check that the version you use is the correct one (and not perhaps an older version is laying around somewhere else; perhaps try "locate libgpc.a" if that's set up to work on your system, and remove any old version it finds).