Provide a more helpful error message when there is an autoconf version

mismatch.  Batckpatch to 8.2.X.

diff --git a/configure.in b/configure.in
index ef050856e70e5263d4fa1af0e411ae7050c7b7d5..55ab2788a4ebb786c212c86d75bf61b6bf455a2d 100644 (file)
--- a/configure.in
+++ b/configure.in
@@ -19,7 +19,9 @@ m4_pattern_forbid(^PGAC_)dnl to catch undefined macros
 
 AC_INIT([PostgreSQL], [8.2.5], [[email protected]])
 
-m4_if(m4_defn([m4_PACKAGE_VERSION]), [2.59], [], [m4_fatal([Autoconf version 2.59 is required])])
+m4_if(m4_defn([m4_PACKAGE_VERSION]), [2.59], [], [m4_fatal([Autoconf version 2.59 is required.
+You can remove the check from configure.in but it is then your
+responsibility whether the result works or not.])])
 AC_COPYRIGHT([Copyright (c) 1996-2006, PostgreSQL Global Development Group])
 AC_CONFIG_SRCDIR([src/backend/access/common/heaptuple.c])
 AC_CONFIG_AUX_DIR(config)