On Fri, Nov 21, 2014 at 04:27:57PM +0100, Jiri Kosina wrote: > On Fri, 21 Nov 2014, Josh Poimboeuf wrote: > > > I think we can use "depends on HAVE_FENTRY" to accomplish this, since > > CC_USING_FENTRY gets set by the top level kernel Makefile if > > CONFIG_HAVE_FENTRY is set. > > The problem is that HAVE_FENTRY is set automatically on x86_64, no matter > whether your actual compiler supports it or not. > > CC_USING_FENTRY is defined if and only if the actual currently used > compiler supports it, but that can't be expressed in Kconfig.
Ah, light bulb moment. Now I understand what "$(call cc-option, ...)" does. Thanks :-) -- Josh -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
