From 556b816b820f6749910784cbaca8bb0bb822a970 Mon Sep 17 00:00:00 2001
From: Sebastian Huber <sebastian.huber@embedded-brains.de>
Date: Fri, 22 Jul 2022 14:09:20 +0200
Subject: [PATCH] RTEMS: Do not define _GNU_SOURCE by default

gcc/ChangeLog:

	* config/rs6000/rtems.h (CPLUSPLUS_CPP_SPEC): Undef.
---
 gcc/config/rs6000/rtems.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/gcc/config/rs6000/rtems.h b/gcc/config/rs6000/rtems.h
index 8aa41d5448d..d529e22f7de 100644
--- a/gcc/config/rs6000/rtems.h
+++ b/gcc/config/rs6000/rtems.h
@@ -23,6 +23,9 @@
    see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
    <http://www.gnu.org/licenses/>.  */
 
+/* Undef gnu-user.h macro we don't want.  */
+#undef CPLUSPLUS_CPP_SPEC
+
 /* Copy and paste from linux64.h and freebsd64.h */
 #ifdef IN_LIBGCC2
 #undef TARGET_64BIT