Include sys/endian.h on FreeBSD and use that to detect the byte order.
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@110824 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/__config b/include/__config
index 4279736..c3cf8c7 100644
--- a/include/__config
+++ b/include/__config
@@ -36,6 +36,17 @@
#endif
#endif
+#ifdef __FreeBSD__
+# include <sys/endian.h>
+# if _BYTE_ORDER == _LITTLE_ENDIAN
+# define _LIBCPP_LITTLE_ENDIAN 1
+# define _LIBCPP_BIG_ENDIAN 0
+# else
+# define _LIBCPP_LITTLE_ENDIAN 0
+# define _LIBCPP_BIG_ENDIAN 1
+# endif
+#endif
+
#if !defined(_LIBCPP_LITTLE_ENDIAN) || !defined(_LIBCPP_BIG_ENDIAN)
# include <endian.h>
# if __BYTE_ORDER == __LITTLE_ENDIAN