[PATCH] S390: Fix build with gcc configured with --enable-default-pie. [BZ #21537]

[Florian Weimer]

On 06/08/2017 02:02 PM, Stefan Liebler wrote:
> Question about glibc configure flag --disable-hidden-plt:
> Is this option supported or is it used by somebody?
> It defines NO_HIDDEN which influences the definition of HIDDEN_JUMPTARGET.
> I've tried to build glibc with this configure flag on s390, but it fails
> due to several reasons.

I think we can remove --disable-hidden-plt.  It is broken on x86-64 as
well, and I think the whole thing stopped working with PLT avoidance for
hidden symbols in binutils and switching to namespace-clean names (which
are generally hidden).

Thanks,
Florian