From 700f6918e6ac29702c05f7dbb9a2b6226120322d Mon Sep 17 00:00:00 2001
From: Peter Kokot <peterkokot@gmail.com>
Date: Tue, 18 Jul 2023 17:54:00 +0200
Subject: [PATCH] Fix Autoconf check for development versions (#11532)

When Autoconf version includes also development patch character (for
example, 2.72c), such as in unreleased Autoconf versions, this now
sets proper number for checking minimum required Autoconf version.
---
 buildconf | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/buildconf b/buildconf
index af0937db1dc..51ef423abcf 100755
--- a/buildconf
+++ b/buildconf
@@ -81,7 +81,7 @@ echo "buildconf: Checking installation"
 min_version=$(sed -n 's/AC_PREREQ(\[\(.*\)\])/\1/p' configure.ac)
 
 # Check if autoconf exists.
-ac_version=$($PHP_AUTOCONF --version 2>/dev/null|head -n 1|sed -e 's/^[^0-9]*//' -e 's/[a-z]* *$//')
+ac_version=$($PHP_AUTOCONF --version 2>/dev/null|head -n 1|sed -e 's/^[^0-9]*//' -e 's/[^0-9.]*$//')
 
 if test -z "$ac_version"; then
   echo "buildconf: autoconf not found." >&2