From 9d1704e6dea7f47f75a518c05ce55d77e5f8679a Mon Sep 17 00:00:00 2001
From: Matthew Berryman <matthew@acrossthecloud.net>
Date: Mon, 30 Nov 2020 13:54:11 +1100
Subject: [PATCH] fixes #1535 HPACK tools depends on C++14 but does not detect
 it

---
 configure.ac | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/configure.ac b/configure.ac
index 001b1abd..916c0543 100644
--- a/configure.ac
+++ b/configure.ac
@@ -502,6 +502,11 @@ if test "x${request_hpack_tools}" = "xyes" &&
   AC_MSG_ERROR([HPACK tools were requested (--enable-hpack-tools) but dependencies are not met.])
 fi
 
+if AX_CXX_COMPILE_STDCXX([14], [noext], [optional]) then
+  enable_hpack_tools=no
+  AC_MSG_WARN([HPACK tools were requested but depend on C++14])
+fi
+
 AM_CONDITIONAL([ENABLE_HPACK_TOOLS], [ test "x${enable_hpack_tools}" = "xyes" ])
 
 # C++ library libnghttp2_asio