You can use different personalities for different setups.
codeblocks --help shows the appropriate command-line parameters.
Thanks for the suggestion, but I still feel that it should be possible automatically.
Maybe its an option to have default, and a machine depended setting.
where the machine depended parameter is the ID of your CPU or something.
Please feel free to create the patch for you to use yourself and submit it to Berlios and maybe it will get applied to Code::Blocks.
Tim S.