Re: [PATCH 1/2] kbuild: remove cc-option test of -fno-stack-protector

[Kees Cook]

On Fri, Jun 26, 2020 at 12:09:37PM -0700, Nick Desaulniers wrote:
> On Fri, Jun 26, 2020 at 12:00 PM Masahiro Yamada <masahiroy@xxxxxxxxxx> wrote:
> >  CFLAGS_NO_HARDENING := $(call cc-option, -fno-PIC,) $(call cc-option, -fno-pic,) \
> > -       $(call cc-option, -fno-stack-protector,) \
> > -       $(call cc-option, -fno-stack-protector-all,)
> > +       -fno-stack-protector $(call cc-option, -fno-stack-protector-all)
> 
> Just curious, looks like we could do the same for
> `-fno-stack-protector-all`, here or tree-wide, right?  Wait, what
> compiler recognizes -fno-stack-protector-all?
> https://godbolt.org/z/QFQKE_

That is from ancient times, IIRC. -fno-stack-protector should be
sufficient.

-- 
Kees Cook