On Fri, 2012-04-27 at 13:31 -0700, H. Peter Anvin wrote: > On 04/27/2012 01:27 PM, Sam Ravnborg wrote: > >> > >> My question is, how do I remove the dependency in kconfig based on the > >> compiler? > > > > Allow the user to select one of: > > 1) function tracer > > 2) frame pointer > > 3) none of the above > > > > This should be trivial to do in Kconfig language. > > > > If "function tracer" is selected then use -mfentry if supported, > > with a fallback to frame pointers. > > > > This looks simple IMO and should be easy to implement too. > > > > Except it is the wrong thing. This is not the only user of frame > pointer. What I think you mean is remove the dependency in Kconfig, but > force the frame pointer enabled if -mfentry is not supported. You mean option 3? 3) Add frame pointers silently if gcc fails to build with gcc -pg. Which I should have added, relies on the same thing as option 2: 2) Remove the select entirely. -- Steve -- To unsubscribe from this list: send the line "unsubscribe linux-kbuild" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
