From: Svante Signell <svante.sign...@gmail.com>

GNU/Hurd uses glibc just like GNU/Linux.

This is needed for gcc to notice that glibc supports split stack in
finish_options.

gcc/ChangeLog:
        * gcc/config/gnu.h (OPTION_GLIBC_P, OPTION_GLIBC): Define.

Patch from Svante Signell for PR go/104290.
---
 gcc/config/gnu.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/gcc/config/gnu.h b/gcc/config/gnu.h
index e2a33baf040..d082816aaa3 100644
--- a/gcc/config/gnu.h
+++ b/gcc/config/gnu.h
@@ -19,6 +19,9 @@ You should have received a copy of the GNU General Public 
License
 along with GCC.  If not, see <http://www.gnu.org/licenses/>.
 */
 
+#define OPTION_GLIBC_P(opts)   (DEFAULT_LIBC == LIBC_GLIBC)
+#define OPTION_GLIBC           OPTION_GLIBC_P (&global_options)
+
 #undef GNU_USER_TARGET_OS_CPP_BUILTINS
 #define GNU_USER_TARGET_OS_CPP_BUILTINS()              \
     do {                                       \
-- 
2.43.0

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