[libcxx] r247827 - Add endianness configuration block for GCC.

[Dan Albert via cfe-commits]

Author: danalbert
Date: Wed Sep 16 13:10:47 2015
New Revision: 247827

URL: http://llvm.org/viewvc/llvm-project?rev=247827&view=rev
Log:
Add endianness configuration block for GCC.

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

Modified:
    libcxx/trunk/include/__config

Modified: libcxx/trunk/include/__config
URL: http://llvm.org/viewvc/llvm-project/libcxx/trunk/include/__config?rev=247827&r1=247826&r2=247827&view=diff
==============================================================================
--- libcxx/trunk/include/__config (original)
+++ libcxx/trunk/include/__config Wed Sep 16 13:10:47 2015
@@ -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