diff -u -r ../wol-0.7.1/src/magic.c ./src/magic.c
--- ../wol-0.7.1/src/magic.c	2003-08-12 16:45:22.000000000 +0000
+++ ./src/magic.c	2017-07-07 06:18:14.306649401 +0000
@@ -114,7 +114,9 @@
 	XFREE ((void *) m);
 }
 
-
+#ifdef __ANDROID__
+extern int ether_hostton(const char *, struct ether_addr *);
+#endif
 
 int
 magic_assemble (struct magic *magic_buf, const char *mac_str,
