Depends on the system you use (windows, linux, mac).
You should use the tool cb_share_config[.exe], to export the compiler set from the conf-file.
The configuration is stored in default.conf an you find that file either in ~/.codeblocks on linux or below the APPDATA system folder on windows (on w2k and XP usually: c:\documents and settings\[username]\Application Data\codeblocks). On Vista, w7 and Mac: I don't know.
And again I strictly recommend to use cb_share_config to extrat the data. On linux it is installed by default and can be run from console, on windows it's in C::B's program-folder, but if installed with the 8.02-installer it does not get installed by default (if I remember right).