From 4d453c6822fc62f85b058f3b936bace833dff263 Mon Sep 17 00:00:00 2001
From: Kamil Rakoczy <krakoczy@antmicro.com>
Date: Tue, 17 Jan 2023 13:11:12 +0100
Subject: [PATCH] Fix to use same std flag in Verilator and Verilated design
 (#3881)

---
 configure.ac | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/configure.ac b/configure.ac
index 07d54be77..4a7eaa9df 100644
--- a/configure.ac
+++ b/configure.ac
@@ -543,6 +543,10 @@ if test "$_my_result" = "no" ; then
    AC_MSG_CHECKING(whether $CXX supports C++11 with $CFG_CXXFLAGS_STD_NEWEST)
    _MY_CXX_CHECK_CXX_VER()
    AC_MSG_RESULT($_my_result)
+else
+  # CFG_CXXFLAGS_STD_NEWEST is also propagated to include/verilated.mk.in
+  # make sure we use the same std flag while compiling verilator and verilated design
+  CFG_CXXFLAGS_STD_NEWEST=""
 fi
 if test "$_my_result" = "no" ; then
    AC_MSG_NOTICE([[]])