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diff --git a/storage/myisam/rt_index.h b/storage/myisam/rt_index.h
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+++ b/storage/myisam/rt_index.h
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+/* Copyright (c) 2002, 2004-2006 MySQL AB
+   Use is subject to license terms
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; version 2 of the License.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1335  USA */
+
+#ifndef _rt_index_h
+#define _rt_index_h
+
+#ifdef HAVE_RTREE_KEYS
+
+#define rt_PAGE_FIRST_KEY(page, nod_flag) (page + 2 + nod_flag)
+#define rt_PAGE_NEXT_KEY(key, key_length, nod_flag) (key + key_length + \
+              (nod_flag ? nod_flag : info->s->base.rec_reflength))
+#define rt_PAGE_END(page) (page + mi_getint(page))
+
+#define rt_PAGE_MIN_SIZE(block_length) ((uint)(block_length) / 3)
+
+int rtree_insert(MI_INFO *info, uint keynr, uchar *key, uint key_length);
+int rtree_delete(MI_INFO *info, uint keynr, uchar *key, uint key_length);
+
+int rtree_find_first(MI_INFO *info, uint keynr, uchar *key, uint key_length, 
+                    uint search_flag);
+int rtree_find_next(MI_INFO *info, uint keynr, uint search_flag);
+
+int rtree_get_first(MI_INFO *info, uint keynr, uint key_length);
+int rtree_get_next(MI_INFO *info, uint keynr, uint key_length);
+
+ha_rows rtree_estimate(MI_INFO *info, uint keynr, uchar *key, 
+                       uint key_length, uint flag);
+
+int rtree_split_page(MI_INFO *info, MI_KEYDEF *keyinfo, uchar *page, uchar *key, 
+                    uint key_length, my_off_t *new_page_offs);
+
+#endif /*HAVE_RTREE_KEYS*/
+#endif /* _rt_index_h */