From 2890e95357cab23d142f291d95793a8bf65d36cc Mon Sep 17 00:00:00 2001
From: Peter Kokot <peterkokot@gmail.com>
Date: Wed, 17 Jul 2024 06:38:03 +0200
Subject: [PATCH] Autotools: Fix Autoconf syntax (erroneous dnl)

M4 interprets the dnl in this combination of m4_ifnblank as part of the
preceding text so the [] can be used to avoid this issue.
---
 build/php.m4 | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/build/php.m4 b/build/php.m4
index b804eea1426c8..81f84bf62e527 100644
--- a/build/php.m4
+++ b/build/php.m4
@@ -377,7 +377,7 @@ AC_DEFUN([PHP_EVAL_LIBLINE],
     ;;
     esac
   done
-m4_ifnblank([$3], [m4_ifnblank([$2], [ext_shared=$_php_ext_shared_saved])])dnl
+m4_ifnblank([$3], [m4_ifnblank([$2], [ext_shared=$_php_ext_shared_saved])])[]dnl
 ])
 
 dnl