diff --git a/revision.h b/revision.h
new file mode 100644
index 0000000..9bbb5a9
--- /dev/null
+++ b/revision.h
@@ -0,0 +1,16 @@
+/* revision.h -- define the version number
+ * Copyright (C) 1992-1993 Jean-loup Gailly.
+ * This is free software; you can redistribute it and/or modify it under the
+ * terms of the GNU General Public License, see the file COPYING.
+ */
+
+#define VERSION "1.2.4"
+#define PATCHLEVEL 0
+#define REVDATE "18 Aug 93"
+
+/* This version does not support compression into old compress format: */
+#ifdef LZW
+#  undef LZW
+#endif
+
+/* $Id$ */