https://gcc.gnu.org/g:3146a92a77f1fccec71a880c7f890a1251aeab41
commit r15-63-g3146a92a77f1fccec71a880c7f890a1251aeab41
Author: Jakub Jelinek <ja...@redhat.com>
Date: Tue Apr 30 09:00:07 2024 +0200
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 <ja...@redhat.com>
* gthr.h (GTHREAD_USE_WEAK): Don't redefine to 0 for glibc 2.34+
on GNU Hurd.
Diff:
---
libgcc/gthr.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libgcc/gthr.h b/libgcc/gthr.h
index 53a5f0f7458..33c2d8ff630 100644
--- a/libgcc/gthr.h
+++ b/libgcc/gthr.h
@@ -142,7 +142,7 @@ see the files COPYING3 and COPYING.RUNTIME respectively.
If not, see
#endif
#ifdef __GLIBC_PREREQ
-#if __GLIBC_PREREQ(2, 34)
+#if __GLIBC_PREREQ(2, 34) && !defined(__gnu_hurd__)
/* glibc 2.34 and later has all pthread_* APIs inside of libc,
no need to link separately with -lpthread. */
#undef GTHREAD_USE_WEAK
