From d802f6dfb100ded268a85e44e16744b5bc54410c Mon Sep 17 00:00:00 2001
From: Peter Kokot <peterkokot@gmail.com>
Date: Wed, 9 Aug 2023 23:52:23 +0200
Subject: [PATCH] Fix check for using computed goto flag for re2c

AC_LANG_SOURCE should be used instead of the AC_LANG_PROG so the
compilation check can succeed when the computed goto extension is
available to optimize conditional jumps.
---
 configure.ac | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index 6d6d44e0597c4..9c538863ff153 100644
--- a/configure.ac
+++ b/configure.ac
@@ -178,7 +178,7 @@ if test "$PHP_RE2C_CGOTO" = "no"; then
   RE2C_FLAGS=""
 else
   AC_MSG_CHECKING([whether re2c -g works])
-  AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [[
+  AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
 int main(int argc, const char **argv)
 {
   argc = argc;