Recognize macOS 12 and later.
https://debbugs.gnu.org/cgi/bugreport.cgi?bug=44605

This patch is only relevant for some Apple users
To be applied in /usr/share/aclocal by root.
After that, rerun aclocal, libtoolize, autoreconf,
and ./configure in the GNU APL top-level directory.

--- libtool.m4.orig	2025-09-23 13:52:24.724767856 +0200
+++ libtool.m4	2025-09-23 13:52:33.968845949 +0200
@@ -1075,7 +1075,7 @@
 	  _lt_dar_allow_undefined='$wl-undefined ${wl}dynamic_lookup' ;;
 	10.[[012]][[,.]]*)
 	  _lt_dar_allow_undefined='$wl-flat_namespace $wl-undefined ${wl}suppress' ;;
-	10.*|11.*)
+	*)
 	  _lt_dar_allow_undefined='$wl-undefined ${wl}dynamic_lookup' ;;
       esac
     ;;

