diff --git a/include/hashed_db.h b/include/hashed_db.h
new file mode 100644
index 0000000..4dd3933
--- /dev/null
+++ b/include/hashed_db.h
@@ -0,0 +1,67 @@
+/****************************************************************************
+ * Copyright (c) 2006 Free Software Foundation, Inc.                        *
+ *                                                                          *
+ * Permission is hereby granted, free of charge, to any person obtaining a  *
+ * copy of this software and associated documentation files (the            *
+ * "Software"), to deal in the Software without restriction, including      *
+ * without limitation the rights to use, copy, modify, merge, publish,      *
+ * distribute, distribute with modifications, sublicense, and/or sell       *
+ * copies of the Software, and to permit persons to whom the Software is    *
+ * furnished to do so, subject to the following conditions:                 *
+ *                                                                          *
+ * The above copyright notice and this permission notice shall be included  *
+ * in all copies or substantial portions of the Software.                   *
+ *                                                                          *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
+ * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
+ * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
+ *                                                                          *
+ * Except as contained in this notice, the name(s) of the above copyright   *
+ * holders shall not be used in advertising or otherwise to promote the     *
+ * sale, use or other dealings in this Software without prior written       *
+ * authorization.                                                           *
+ ****************************************************************************/
+
+/****************************************************************************
+ *  Author: Thomas E. Dickey                        2006                    *
+ ****************************************************************************/
+
+/*
+ * $Id: hashed_db.h,v 1.5 2006/08/19 15:58:34 tom Exp $
+ */
+
+#ifndef HASHED_DB_H
+#define HASHED_DB_H 1
+
+#include <curses.h>
+
+#if USE_HASHED_DB
+
+#include <db.h>
+
+#ifndef DBN_SUFFIX
+#define DBM_SUFFIX ".db"
+#endif
+
+#ifdef DB_VERSION_MAJOR
+#define HASHED_DB_API DB_VERSION_MAJOR
+#else
+#define HASHED_DB_API 1		/* e.g., db 1.8.5 */
+#endif
+
+extern NCURSES_EXPORT(DB *) _nc_db_open(const char * /* path */, bool /* modify */);
+extern NCURSES_EXPORT(bool) _nc_db_have_data(DBT * /* key */, DBT * /* data */, char ** /* buffer */, int * /* size */);
+extern NCURSES_EXPORT(bool) _nc_db_have_index(DBT * /* key */, DBT * /* data */, char ** /* buffer */, int * /* size */);
+extern NCURSES_EXPORT(int) _nc_db_close(DB * /* db */);
+extern NCURSES_EXPORT(int) _nc_db_first(DB * /* db */, DBT * /* key */, DBT * /* data */);
+extern NCURSES_EXPORT(int) _nc_db_next(DB * /* db */, DBT * /* key */, DBT * /* data */);
+extern NCURSES_EXPORT(int) _nc_db_get(DB * /* db */, DBT * /* key */, DBT * /* data */);
+extern NCURSES_EXPORT(int) _nc_db_put(DB * /* db */, DBT * /* key */, DBT * /* data */);
+
+#endif
+
+#endif /* HASHED_DB_H */