--- /dev/null
+diff -ur postgresql-12.10.orig/configure.in postgresql-12.10/configure.in
+--- postgresql-12.10.orig/configure.in 2022-02-07 22:19:04.000000000 +0100
++++ postgresql-12.10/configure.in 2022-04-04 18:10:43.532106587 +0200
+@@ -19,10 +19,6 @@
+
+ AC_INIT([PostgreSQL], [12.10], [pgsql-bugs@lists.postgresql.org])
+
+-m4_if(m4_defn([m4_PACKAGE_VERSION]), [2.69], [], [m4_fatal([Autoconf version 2.69 is required.
+-Untested combinations of 'autoconf' and PostgreSQL versions are not
+-recommended. You can remove the check from 'configure.in' but it is then
+-your responsibility whether the result works or not.])])
+ AC_COPYRIGHT([Copyright (c) 1996-2019, PostgreSQL Global Development Group])
+ AC_CONFIG_SRCDIR([src/backend/access/common/heaptuple.c])
+ AC_CONFIG_AUX_DIR(config)