"Jan Beulich" <[email protected]> wrote:
>
> >>> Sam Ravnborg <[email protected]> 14.01.06 15:03:01 >>>
> >On Sat, Jan 14, 2006 at 04:56:35AM -0800, Andrew Morton wrote:
> >>
> >> > Index: linux/Makefile
> >> > ===================================================================
> >> > --- linux.orig/Makefile
> >> > +++ linux/Makefile
> >> > @@ -502,6 +502,10 @@ CFLAGS += $(call add-align,CONFIG_CC_AL
> >> > CFLAGS += $(call add-align,CONFIG_CC_ALIGN_LOOPS,-loops)
> >> > CFLAGS += $(call add-align,CONFIG_CC_ALIGN_JUMPS,-jumps)
> >> >
> >> > +ifdef CONFIG_UNWIND_INFO
> >> > +CFLAGS += -fasynchronous-unwind-tables
> >> > +endif
> >Is this option available on all gcc's for all archs?
> >Otherwise you have to do:
> >CFLAGS += $(call cc-option,-fasynchronous-unwind-tables,)
>
> Yes, it is (and it has been at least since 3.2.x). Apparently the PPC backend doesn't fully support this...
>
And others might not support it either. We don't know.
Perhaps this option should be enabled only on architectures where it's known
to work, rather than disabled only on ppc64, as my fix does.
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