Remove BYTE_ORDER from the file. Only use __BYTE_ORDER__ and relative…

… checks

src/inet/arpa-inet-compatibility.h

@@ -23,20 +23,12 @@
 #if CHIP_SYSTEM_CONFIG_USE_SOCKETS
 #include <arpa/inet.h>
 
-#ifndef BYTE_ORDER
-#error Endianness not defined
-#endif
-
 #else // !CHIP_SYSTEM_CONFIG_USE_SOCKETS
 
 #if CHIP_SYSTEM_CONFIG_USE_LWIP
 #include <lwip/def.h>
 #include <lwip/opt.h>
 
-#ifndef BYTE_ORDER
-#error Endianness not defined
-#endif
-
 #if defined(LWIP_DONT_PROVIDE_BYTEORDER_FUNCTIONS)
 #ifndef htons
 #define htons(x) lwip_htons(x)
@@ -56,27 +48,11 @@
 
 #if CHIP_SYSTEM_CONFIG_USE_OPEN_THREAD_ENDPOINT
 
-#ifndef BYTE_ORDER
-#if defined(__LITTLE_ENDIAN__)
-#define BYTE_ORDER LITTLE_ENDIAN
-#elif defined(__BIG_ENDIAN__)
-#define BYTE_ORDER BIG_ENDIAN
-#elif defined(__BYTE_ORDER__)
-#define BYTE_ORDER __BYTE_ORDER__
-#else
+#ifndef __BYTE_ORDER__
 #error Endianness not defined is not defined
-#endif
 #endif // BYTE_ORDER
 
-#ifndef BIG_ENDIAN
-#define BIG_ENDIAN __ORDER_BIG_ENDIAN__
-#endif
-
-#ifndef LITTLE_ENDIAN
-#define LITTLE_ENDIAN __ORDER_LITTLE_ENDIAN__
-#endif
-
-#if BYTE_ORDER == BIG_ENDIAN
+#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
 #ifndef htons
 #define htons(x) (x)
 #endif
@@ -90,7 +66,7 @@
 #define ntohl(x) (x)
 #endif
 
-#else // BYTE_ORDER != BIG_ENDIAN
+#elif __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
 #ifndef htons
 #define htons(x) ((u16_t)((((x) & (u16_t) 0x00ffU) << 8) | (((x) & (u16_t) 0xff00U) >> 8)))
 #endif
@@ -105,7 +81,10 @@
 #ifndef ntohl
 #define ntohl(x) htonl(x)
 #endif
-#endif // BYTE_ORDER == BIG_ENDIAN
+
+#else
+#error Unknown endiannes set to _BYTE_ORDER__
+#endif // _BYTE_ORDER__ ==
 
 #endif // CHIP_SYSTEM_CONFIG_USE_OPEN_THREAD_ENDPOINT