--- /dev/null
+#ifndef __A_OUT_GNU_H__
+# error "Never use <bits/a.out.h> directly; include <a.out.h> instead."
+#endif
+
+#ifdef __x86_64__
+
+/* Signal to users of this header that this architecture really doesn't
+ support a.out binary format. */
+#define __NO_A_OUT_SUPPORT 1
+
+#endif