--- gethostname.c.orig	2014-05-29 13:20:06.000000000 -0400
+++ gethostname.c	2014-05-29 13:19:42.000000000 -0400
@@ -18,7 +18,16 @@
 #include <arpa/inet.h>
 #include <string.h>
 
+#ifndef strlcpy
+/*
+ * On OS X (and probably some other systems aswell), strlcpy might be
+ * implemented as a macro. If this macro is defined while we're including this
+ * header, strlcpy is already declared and trying to re-declare it with the 
+ * following line *will* fail, because the macro will expand to something
+ * that's not a valid function name.
+ */
 size_t strlcpy(char *dst, const char *src, size_t siz);
+#endif /* !defined(strlcpy) */
 
 char *get_hostname(char* addr)
 {