From bd24c67d06f2eee667e6698aba7b3a9523c94b23 Mon Sep 17 00:00:00 2001
From: Meco Man <920369182@qq.com>
Date: Sun, 17 Oct 2021 17:30:30 -0400
Subject: [PATCH] define RT_USING_BIG_ENDIAN for the long-term version

---
 components/net/lwip-1.4.1/src/arch/include/arch/sys_arch.h | 4 +++-
 components/net/lwip-2.0.2/src/arch/include/arch/sys_arch.h | 4 +++-
 components/net/lwip-2.0.3/src/arch/include/arch/sys_arch.h | 4 +++-
 components/net/lwip-2.1.2/src/arch/include/arch/sys_arch.h | 4 +++-
 src/Kconfig                                                | 4 ++++
 5 files changed, 16 insertions(+), 4 deletions(-)

diff --git a/components/net/lwip-1.4.1/src/arch/include/arch/sys_arch.h b/components/net/lwip-1.4.1/src/arch/include/arch/sys_arch.h
index 72814aa25c..b4c81772aa 100644
--- a/components/net/lwip-1.4.1/src/arch/include/arch/sys_arch.h
+++ b/components/net/lwip-1.4.1/src/arch/include/arch/sys_arch.h
@@ -39,7 +39,9 @@
 
 #include <rtthread.h>
 
-#ifndef BYTE_ORDER
+#ifdef RT_USING_BIG_ENDIAN
+#define BYTE_ORDER BIG_ENDIAN
+#else
 #define BYTE_ORDER LITTLE_ENDIAN
 #endif
 
diff --git a/components/net/lwip-2.0.2/src/arch/include/arch/sys_arch.h b/components/net/lwip-2.0.2/src/arch/include/arch/sys_arch.h
index 8637cc9263..550a96cb3c 100644
--- a/components/net/lwip-2.0.2/src/arch/include/arch/sys_arch.h
+++ b/components/net/lwip-2.0.2/src/arch/include/arch/sys_arch.h
@@ -39,7 +39,9 @@
 
 #include <rtthread.h>
 
-#ifndef BYTE_ORDER
+#ifdef RT_USING_BIG_ENDIAN
+#define BYTE_ORDER BIG_ENDIAN
+#else
 #define BYTE_ORDER LITTLE_ENDIAN
 #endif
 
diff --git a/components/net/lwip-2.0.3/src/arch/include/arch/sys_arch.h b/components/net/lwip-2.0.3/src/arch/include/arch/sys_arch.h
index 8637cc9263..550a96cb3c 100644
--- a/components/net/lwip-2.0.3/src/arch/include/arch/sys_arch.h
+++ b/components/net/lwip-2.0.3/src/arch/include/arch/sys_arch.h
@@ -39,7 +39,9 @@
 
 #include <rtthread.h>
 
-#ifndef BYTE_ORDER
+#ifdef RT_USING_BIG_ENDIAN
+#define BYTE_ORDER BIG_ENDIAN
+#else
 #define BYTE_ORDER LITTLE_ENDIAN
 #endif
 
diff --git a/components/net/lwip-2.1.2/src/arch/include/arch/sys_arch.h b/components/net/lwip-2.1.2/src/arch/include/arch/sys_arch.h
index 1e97f8a5ac..a47831d085 100644
--- a/components/net/lwip-2.1.2/src/arch/include/arch/sys_arch.h
+++ b/components/net/lwip-2.1.2/src/arch/include/arch/sys_arch.h
@@ -39,7 +39,9 @@
 
 #include <rtthread.h>
 
-#ifndef BYTE_ORDER
+#ifdef RT_USING_BIG_ENDIAN
+#define BYTE_ORDER BIG_ENDIAN
+#else
 #define BYTE_ORDER LITTLE_ENDIAN
 #endif
 
diff --git a/src/Kconfig b/src/Kconfig
index fc7fcd54f4..e31afc25fa 100644
--- a/src/Kconfig
+++ b/src/Kconfig
@@ -8,6 +8,10 @@ config RT_NAME_MAX
         Each kernel object, such as thread, timer, semaphore etc, has a name,
         the RT_NAME_MAX is the maximal size of this object name.
 
+config RT_USING_BIG_ENDIAN
+    bool
+    default n
+
 config RT_USING_ARCH_DATA_TYPE
     bool "Use the data types defined in ARCH_CPU"
     default n