SDKs: Sketch an initial stub SDK for Linux, I believe this suffices for building
the main compiler-rt and profile modules, at least on x86.

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@146131 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/SDKs/linux/usr/include/endian.h b/SDKs/linux/usr/include/endian.h
new file mode 100644
index 0000000..95528db
--- /dev/null
+++ b/SDKs/linux/usr/include/endian.h
@@ -0,0 +1,29 @@
+/* ===-- endian.h - stub SDK header for compiler-rt -------------------------===
+ *
+ *                     The LLVM Compiler Infrastructure
+ *
+ * This file is dual licensed under the MIT and the University of Illinois Open
+ * Source Licenses. See LICENSE.TXT for details.
+ *
+ * ===-----------------------------------------------------------------------===
+ *
+ * This is a stub SDK header file. This file is not part of the interface of
+ * this library nor an official version of the appropriate SDK header. It is
+ * intended only to stub the features of this header required by compiler-rt.
+ *
+ * ===-----------------------------------------------------------------------===
+ */
+
+#ifndef __ENDIAN_H__
+#define __ENDIAN_H__
+
+#define __LITTLE_ENDIAN 1234
+#define __BIG_ENDIAN 4321
+
+#if defined(__LITTLE_ENDIAN__) || defined(__ORDER_LITTLE_ENDIAN__)
+#define __BYTE_ORDER __LITTLE_ENDIAN
+#else
+#define __BYTE_ORDER __BIG_ENDIAN
+#endif
+
+#endif /* __ENDIAN_H__ */