From 2897e786b4753adaa124f16dcef757dfcc9bddaa Mon Sep 17 00:00:00 2001
From: Dan Albert <danalbert@google.com>
Date: Wed, 16 Sep 2015 18:10:47 +0000
Subject: [PATCH] Add endianness configuration block for GCC.

Previously GCC using libc++ would just leak endian.h for every
include.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@247827 91177308-0d34-0410-b5e6-96231b3b80d8
---
 include/__config | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/include/__config b/include/__config
index 766750086..e951f9b11 100644
--- a/include/__config
+++ b/include/__config
@@ -64,6 +64,16 @@
 #endif  // __BIG_ENDIAN__
 #endif  // __BIG_ENDIAN__
 
+#ifdef __BYTE_ORDER__
+#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
+#define _LIBCPP_LITTLE_ENDIAN 1
+#define _LIBCPP_BIG_ENDIAN 0
+#elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
+#define _LIBCPP_LITTLE_ENDIAN 0
+#define _LIBCPP_BIG_ENDIAN 1
+#endif // __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
+#endif // __BYTE_ORDER__
+
 #ifdef __FreeBSD__
 # include <sys/endian.h>
 #  if _BYTE_ORDER == _LITTLE_ENDIAN