You might try telling it that it's running on an older x86 processes. For example, i386-linux-unknown, or i386-linux-gnu. However, I'm not sure what the right way to do that is for the config script that you have... Passing --help to the configure script should cause it to print out most of the available options. There should also be documentation somewhere in the source tree that gives information about how to configure and build it. Hope this helps (at least a little)... Thanks, Lyle -----Original Message----- From: gcc-help-owner@xxxxxxxxxxx [mailto:gcc-help-owner@xxxxxxxxxxx] On Behalf Of Mehmet Akay Sent: Sunday, October 17, 2004 1:23 PM To: gcc-help@xxxxxxxxxxx Subject: Urgent help needed on gcc 2.6.3 Hi, Does anyone know if gcc 2.6.3 (I know this is quite an old version, but I do need to install it) can be installed on an Intel Pentium 4 machine with Fedora Linux v2 system? I tried ./configure, but I get the following error message: "i686-linux-unknown, unrecognized system'. Any help is greatly appreciated. Regards, Mehmet