libgcc: Do use weakrefs for glibc 2.34 on GNU Hurd

libgcc: Do use weakrefs for glibc 2.34 on GNU Hurd

On Mon, Apr 29, 2024 at 01:44:24PM +0000, Joseph Myers wrote:
> > glibc 2.34 and later doesn't have separate libpthread (libpthread.so.0 is a
> > dummy shared library with just some symbol versions for compatibility, but
> > all the pthread_* APIs are in libc.so.6).
>
> I suspect this has caused link failures in the glibc testsuite for Hurd,
> which still has separate libpthread.
>
> https://sourceware.org/pipermail/libc-testresults/2024q2/012556.html

So like this then?

2024-04-30  Jakub Jelinek  <jakub@redhat.com>

	* gthr.h (GTHREAD_USE_WEAK): Don't redefine to 0 for glibc 2.34+
	on GNU Hurd.