Hello! I still have a problem with the pascal compiler installation but now I have more informations... And it is more a problem with linux than with the installation itself. Here is the generic procedure for installing GNU Pascal : 1. Unpack the source distributions. From a directory of your choice (e.g. `/usr/local/src'), unpack the GNU CC and GNU Pascal source distributions. This will create separate subdirectories for GCC and GPC. `cd' to the GPC directory (`/usr/local/src/gpc' in the example above) and move the contents (a subdirectory `p') to the GCC directory (for instance `usr/local/src/gcc-2.8.1'). At this point, all is ok. Next, go to the GCC source directory and apply the GCC patch required by GNU Pascal: % patch -s -p1 < p/diffs/gcc-2.8.1.diff The problem arise at this moment when I do "cd gcc-2.8.2; patch -s -p1 <p/diffs/gcc-2.8.1.diff", the following message appears : "bash : patch : command not found". So, I understand that it is not a problem with the installation but with my linux configuration. The command patch is missing and I have no idea of how to get it. let me know if my understanding is correct and if you can help me, thanks a lot in advance, Nathalie