From 453ed5425ecdb805507741713f72fbce9c07b8f9 Mon Sep 17 00:00:00 2001
From: david gauchard <gauchard@laas.fr>
Date: Sat, 10 Jul 2021 14:47:20 +0200
Subject: [PATCH] byte: workaround for c++17 std::byte definition

---
 cores/esp8266/Arduino.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/cores/esp8266/Arduino.h b/cores/esp8266/Arduino.h
index 2aab5770c9..4b824d942c 100644
--- a/cores/esp8266/Arduino.h
+++ b/cores/esp8266/Arduino.h
@@ -21,6 +21,12 @@
 #define Arduino_h
 
 #ifdef __cplusplus
+#if __cplusplus >= 201703L
+#include <cstddef>                // std::byte
+#include <functional>             // std::byte
+#include <bits/cpp_type_traits.h> // std::byte
+#define byte arduino_byte
+#endif
 extern "C" {
 #endif