On Wed, Aug 16, 2017 at 06:01:17PM +0800, Xi Ruoyao wrote: > On 2017-08-16 10:01 +0200, Florian Weimer wrote: > > GCC for i386 can be configured with --enable-frame-pointer, which > > changes the frame pointer from disabled to enabled by default. > > > > Is there a command flag to undo that, changing the default back to a > > default of frame pointer omission? > > > > -fomit-frame-pointer is not that flag: > > > > gcc: error: -pg and -fomit-frame-pointer are incompatible > > Yes, you can't use -fomit-frame-pointer with -pg. Which isn't actually true for most targets (those with PROFILE_BEFORE_PROLOGUE at least), but this error is implemented in the specs file for everything. Segher
