It depends on how/where you installed it. If you installed it into its own directory (e.g., /opt/gcc-3.3), then you can simply remove that directory from your system. If you installed it into some common directory tree (e.g., /usr or /usr/local), then you need to remove the files it installed more or less one by one (no easy way to do that as far as I know)... Good luck, Lyle -----Original Message----- From: gcc-help-owner@xxxxxxxxxxx [mailto:gcc-help-owner@xxxxxxxxxxx] On Behalf Of Milong Sent: Thursday, December 11, 2003 3:25 AM To: gcc-help@xxxxxxxxxxx Subject: how can uninstall the GCC 3.3? I have installed the GCC3.3. But I found the program that can compiled with the GCC 2.96 successfully can't be compiled now. How can uninstall the GCC 3.3?