
-fomit-frame-pointer is included for any optimisation level above O2 (including Os) Setting MACOS_DEPLOYMENT_TARGET is unecessary if you are just setting it the same as the OS X you are running.
-fomit-frame-pointer is included for any optimisation level above O2 (including Os) Setting MACOS_DEPLOYMENT_TARGET is unecessary if you are just setting it the same as the OS X you are running.