On Mon, Dec 03, 2012 at 09:40:48AM -0500, Steven Rostedt wrote: > The issue is with x86. Gcc wont compile if you have -pg and > -fomit-frame-pointer on x86. I originally forced function tracing to > select FRAME_POINTER, but because now on x86 with -mfentry, -pg no > longer requires frame pointers being set, I just let -pg complain one > way or the other. I believe that gcc by default will not add frame > pointers. Thus adding function tracing just prevents > -fomit-frame-pointer from being set, and if -pg requires frame pointers > it will automatically enable them otherwise they should not be enabled. On architectures such as MIPS where a frame pointer is not required for debugging -O and higher imply -fomit-frame-pointer. Ralf
