From 4ddad7b34f37f87e33e833f75a071c3775adc8cd Mon Sep 17 00:00:00 2001
From: Alexey Neyman <stilor@att.net>
Date: Tue, 5 Mar 2019 00:48:31 -0800
Subject: CentOS6 cannot use newer GDB releases

... unless one retrofits it with a decent compiler instead of stock
GCC 4.4.

While here, sync up the ax_*.m4 with autoconf-archive.

Signed-off-by: Alexey Neyman <stilor@att.net>
---
 configure.ac | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'configure.ac')

diff --git a/configure.ac b/configure.ac
index 566b0248..ae4a0274 100644
--- a/configure.ac
+++ b/configure.ac
@@ -97,6 +97,9 @@ AC_PROG_YACC
 AS_IF([test -z "$CC" -o -z "$CXX"],
       [AC_MSG_ERROR([no suitable compiler found])])
 
+AX_CXX_COMPILE_STDCXX([11],, [optional])
+CTNG_SET_KCONFIG_OPTION([has_cxx11], [${HAVE_CXX11}])
+
 # Check to see if the compiler can link statically
 AC_MSG_CHECKING([if $CC can static link])
 echo "int main() {}" | ${CC} -static -o /dev/null -xc - > /dev/null 2>&1
-- 
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