RTEMS: Do not define _GNU_SOURCE by default

gcc/ChangeLog:

	* config/rs6000/rtems.h (CPLUSPLUS_CPP_SPEC): Undef.

(cherry picked from commit 556b816b820f6749910784cbaca8bb0bb822a970)

diff --git a/gcc/config/rs6000/rtems.h b/gcc/config/rs6000/rtems.h
index 40db6606f17f0deddb2cc19bbdd78745453f915d..bd9057914c873eae70677130da603cd5154e436d 100644 (file)
--- 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