diff --git a/libc/arch-arm/include/machine/cdefs.h b/libc/arch-arm/include/machine/cdefs.h
new file mode 100644
index 0000000..44f1542
--- /dev/null
+++ b/libc/arch-arm/include/machine/cdefs.h
@@ -0,0 +1,19 @@
+/*	$OpenBSD: cdefs.h,v 1.2 2005/11/24 20:46:44 deraadt Exp $	*/
+
+#ifndef	_MACHINE_CDEFS_H_
+#define	_MACHINE_CDEFS_H_
+
+#if defined(lint)
+#define __indr_reference(sym,alias)	__lint_equal__(sym,alias)
+#define __warn_references(sym,msg)
+#define __weak_alias(alias,sym)		__lint_equal__(sym,alias)
+#elif defined(__GNUC__) && defined(__STDC__)
+#define __weak_alias(alias,sym)					\
+	__asm__(".weak " __STRING(alias) " ; " __STRING(alias)	\
+	    " = " __STRING(sym));
+#define	__warn_references(sym,msg)				\
+	__asm__(".section .gnu.warning." __STRING(sym)		\
+	    " ; .ascii \"" msg "\" ; .text");
+#endif
+
+#endif /* !_MACHINE_CDEFS_H_ */