Has anyone else ever noticed this?
C::B does never-ever automatically adds such option(s). It can only happen if (e.g.) you are running a wizard (but then one time only) or if you are using build scripts.
So:
Check the compiler options, if you have such an options there (Compiler settings -> tab "compiler options"
AND tab "other options")
Check the project options (at project level) if you have such an option there (Compiler settings -> tab "compiler options"
AND tab "other options")
Check the project options (at target level) if you have such an option there (Compiler settings -> tab "compiler options"
AND tab "other options")
Check you dont have any build scripts attached at project level (project properties -> tab build scripts)
Check you dont have any build scripts attached at target level (project properties -> tab build scripts)
If in doubt, post the project file and I can pinpoint exactly where that option comes from. (The project file is enough, you don't need to post any sources.)