bootx_init.c:88: undefined reference to `__stack_chk_fail_local'
Segher Boessenkool
segher at kernel.crashing.org
Fri Jan 13 05:07:14 AEDT 2017
On Thu, Jan 12, 2017 at 09:20:47AM -0600, Benjamin Herrenschmidt wrote:
> On Thu, 2017-01-12 at 15:42 +0100, Christophe LEROY wrote:
> > The 4.6.3 uses __stack_chk_guard, while the 4.4.4 and 4.8.3 use
> > -28680(r2)
> >
> > Is it dependent on the way GCC is built ? Then do we have a way to
> > know,
> > when we compile, which method GCC will use ?
> >
> > See details below for each of the 3 GCC versions.
>
> I think it depends if you built it along with glibc (so it can produce
> userspace binaries) or not.
Right. Tony's compilers are built using a (modified version of) buildall,
and buildall goes out of its way to build without libc whatsoever, even
if the configuration (powerpc64-linux, for example) expects one.
Which leads to TARGET_LIBC_PROVIDES_SSP being undefined (it would normally
be true for glibc >= 2.4), and that is all. Mystery solved. Thanks!
Segher
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