1 files changed, 12 insertions, 0 deletions
diff --git a/version.h b/version.h
index 6868ea5067..5f1bd21d5f 100644
--- a/version.h
+++ b/version.h
@@ -1,3 +1,13 @@
+#ifndef RUBY_TOPLEVEL_VERSION_H                          /*-*-C-*-vi:se ft=c:*/
+#define RUBY_TOPLEVEL_VERSION_H
+/**
+ * @file
+ * @author     Ruby developers <ruby-core@ruby-lang.org>
+ * @copyright  This  file  is   a  part  of  the   programming  language  Ruby.
+ *             Permission  is hereby  granted,  to  either redistribute  and/or
+ *             modify this file, provided that  the conditions mentioned in the
+ *             file COPYING are met.  Consult the file for details.
+ */
 # define RUBY_VERSION_MAJOR RUBY_API_VERSION_MAJOR
 # define RUBY_VERSION_MINOR RUBY_API_VERSION_MINOR
 #define RUBY_VERSION_TEENY 0
@@ -75,3 +85,5 @@
     RUBY_BIRTH_YEAR_STR"-"   \
     RUBY_RELEASE_YEAR_STR" " \
     RUBY_AUTHOR
+
+#endif /* RUBY_TOPLEVEL_VERSION_H */