1 files changed, 5 insertions, 0 deletions
diff --git a/internal.h b/internal.h
index 128c05379d..4e5c01a638 100644
--- a/internal.h
+++ b/internal.h
@@ -468,6 +468,11 @@ struct RHash {
 #define RHASH_SIZE(h) (RHASH(h)->ntbl ? (st_index_t)RHASH(h)->ntbl->num_entries : 0)
 #endif
 
+/* missing/setproctitle.c */
+#ifndef HAVE_SETPROCTITLE
+extern void ruby_init_setproctitle(int argc, char *argv[]);
+#endif
+
 /* class.c */
 void rb_class_subclass_add(VALUE super, VALUE klass);
 void rb_class_remove_from_super_subclasses(VALUE);