-extern char hostname_g[];
-extern const int hostname_g_size;
-extern cdtime_t interval_g;
-extern int pidfile_from_cli;
-extern int timeout_g;
+/* hostname_set updates hostname_g */
+void hostname_set(char const *hostname);
+
+extern char *hostname_g;
+extern cdtime_t interval_g;
+extern int pidfile_from_cli;
+extern int timeout_g;