--- /dev/null
+#ifndef __STDDEF_HDR
+#define __STDDEF_HDR
+
+#define NULL ((void*)0)
+
+typedef unsigned long size_t;
+typedef long ptrdiff_t;
+typedef char wchar_t;
+typedef long double max_align_t;
+
+#define offsetof(TYPE, MEMBER) ((size_t)&(((TYPE*)NULL)->MEMBER))
+
+#endif