auto import from //depot/cupcake/@135843
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_ */