From 095f56654aef768b680acfdfdd5a7eaaf9335f13 Mon Sep 17 00:00:00 2001
From: Eli Schwartz <eschwartz@archlinux.org>
Date: Sun, 11 Apr 2021 18:03:18 -0400
Subject: [PATCH] configure: use m4 forbidden patterns to ensure autoreconf
 exits non-zero

Fail even earlier if autoconf-archive is not available.
---
 configure.ac | 1 +
 1 file changed, 1 insertion(+)

diff --git a/configure.ac b/configure.ac
index 8b3ab1e16f..915803a647 100644
--- a/configure.ac
+++ b/configure.ac
@@ -12,6 +12,7 @@ AC_PREREQ([2.69])
 
 AC_INIT([python],[PYTHON_VERSION],[https://bugs.python.org/])
 
+m4_pattern_forbid([^AX_(CHECK_OPENSSL|C_FLOAT_WORDS_BIGENDIAN)$])
 m4_ifdef(
     [AX_C_FLOAT_WORDS_BIGENDIAN],
     [],
-- 
2.31.1