diff a/config.h b/config.h
--- a/config.h
+++ b/config.h
@@ -124,6 +124,8 @@
 #define CONFIG_CPU "__ppc64__"
 #elif defined(__ARM__)
 #define CONFIG_CPU "__ARM__"
+#elif defined(__aarch64__)
+#define CONFIG_CPU "__aarch64__"
 #else
 /* let it go */
 #endif