Jeffrey Walton <noloader@xxxxxxxxx> writes: > I just noticed __tune_core2__ from `cpp -dM < /dev/null` on a Mac. > > Can we presume an mtune options [1] (ie, -mtune=XXX) have a > corresponding __tune_XXX__ preprocessor definition which GCC > recognizes? For the x86 backend only, yes, you pretty much can. The default is -mtune=generic, and there is no __tune_XXX preprocessor macro for that. Ian
