From ff1b080d2c185a50b7e372de7233d8df41995c13 Mon Sep 17 00:00:00 2001
From: Stefan Siegl <stefan.siegl@tech11.com>
Date: Fri, 20 Sep 2024 23:27:35 +0200
Subject: [PATCH] also check for c++20 standard (and drop c++1y which is too
 old anyways)

---
 config.m4 | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/config.m4 b/config.m4
index 59fd2c9..9d951f7 100644
--- a/config.m4
+++ b/config.m4
@@ -57,14 +57,14 @@ if test "$PHP_V8JS" != "no"; then
 
 
   AC_CACHE_CHECK(for C standard version, ac_cv_v8_cstd, [
-    ac_cv_v8_cstd="c++17"
+    ac_cv_v8_cstd="c++20"
     old_CPPFLAGS=$CPPFLAGS
     AC_LANG_PUSH([C++])
     CPPFLAGS="-std="$ac_cv_v8_cstd
     AC_RUN_IFELSE([AC_LANG_SOURCE([[int main() { return 0; }]])],[],[
-      ac_cv_v8_cstd="c++14"
+      ac_cv_v8_cstd="c++17"
       CPPFLAGS="-std="$ac_cv_v8_cstd
-      AC_RUN_IFELSE([AC_LANG_SOURCE([[int main() { return 0; }]])],[],[ ac_cv_v8_cstd="c++1y" ],[])
+      AC_RUN_IFELSE([AC_LANG_SOURCE([[int main() { return 0; }]])],[],[ ac_cv_v8_cstd="c++14" ],[])
     ],[])
     AC_LANG_POP([C++])
     CPPFLAGS=$old_CPPFLAGS