--- a/src/gcc/config/gnu.h	2022-02-06 11:59:41.000000000 +0100
+++ b/src/gcc/config/gnu.h	2022-02-06 12:00:19.000000000 +0100
@@ -19,6 +19,9 @@
 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 {					\