--- postgresql-15.3/configure.ac	2023-03-07 23:41:18.334515306 +0100
+++ postgresql-15.3/configure.ac	2023-03-07 23:42:03.131067994 +0100
@@ -19,10 +19,6 @@
 
 AC_INIT([PostgreSQL], [15.3], [pgsql-bugs@lists.postgresql.org], [], [https://www.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.ac' but it is then
-your responsibility whether the result works or not.])])
 AC_COPYRIGHT([Copyright (c) 1996-2022, PostgreSQL Global Development Group])
 AC_CONFIG_SRCDIR([src/backend/access/common/heaptuple.c])
 AC_CONFIG_AUX_DIR(config)