diff --git a/gcc/ginclude/stddef.h b/gcc/ginclude/stddef.h
new file mode 100644
index 00000000000..b94bef0bbf3
--- /dev/null
+++ b/gcc/ginclude/stddef.h
@@ -0,0 +1,79 @@
+#ifndef _STDDEF_H
+#ifndef _STDDEF_H_
+#define _STDDEF_H
+#define _STDDEF_H_
+
+#ifndef __sys_stdtypes_h
+/* This avoids lossage on Sunos but only if stdtypes.h comes first.
+   There's no way to win with the other order!  Sun lossage.  */
+
+/* Signed type of difference of two pointers.  */
+
+#ifndef _PTRDIFF_T	/* in case <sys/types.h> has defined it. */
+#ifndef _T_PTRDIFF
+#ifndef __PTRDIFF_T
+#ifndef _PTRDIFF_T_
+#ifndef ___int_ptrdiff_t_h
+#define _PTRDIFF_T
+#define _T_PTRDIFF
+#define __PTRDIFF_T
+#define _PTRDIFF_T_
+#define ___int_ptrdiff_t_h
+typedef __PTRDIFF_TYPE__ ptrdiff_t;
+#endif /* ___int_ptrdiff_t_h */
+#endif /* _PTRDIFF_T_ */
+#endif /* __PTRDIFF_T */
+#endif /* _T_PTRDIFF */
+#endif /* _PTRDIFF_T */
+
+/* Unsigned type of `sizeof' something.  */
+
+#ifndef _SIZE_T	/* in case <sys/types.h> has defined it. */
+#ifndef _T_SIZE
+#ifndef __SIZE_T
+#ifndef _SIZE_T_
+#ifndef ___int_size_t_h
+#define _SIZE_T
+#define _T_SIZE
+#define __SIZE_T
+#define _SIZE_T_
+#define ___int_size_t_h
+typedef __SIZE_TYPE__ size_t;
+#endif /* ___int_size_t_h */
+#endif /* _SIZE_T_ */
+#endif /* __SIZE_T */
+#endif /* _T_SIZE */
+#endif /* _SIZE_T */
+
+/* Data type for wide chars.  */
+
+#ifndef _WCHAR_T
+#ifndef _T_WCHAR_
+#ifndef __WCHAR_T
+#ifndef _WCHAR_T_
+#ifndef ___int_wchar_t_h
+#define _WCHAR_T
+#define _T_WCHAR_
+#define __WCHAR_T
+#define _WCHAR_T_
+#define ___int_wchar_t_h
+typedef __WCHAR_TYPE__ wchar_t;
+#endif
+#endif
+#endif
+#endif
+#endif
+
+#endif /* __sys_stdtypes_h */
+
+/* A null pointer constant.  */
+
+#undef NULL		/* in case <stdio.h> has defined it. */
+#define NULL ((void *)0)
+
+/* Offset of member MEMBER in a struct of type TYPE.  */
+
+#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
+
+#endif /* _STDDEF_H_ */
+#endif /* _STDDEF_H */