Note the BerkeleyDB42.patch file

3f590c01 · Howard Chu · 8406d9cf · 3f590c01
Commit 3f590c01 authored Aug 11, 2005 by Howard Chu
--- a/CHANGES
+++ b/CHANGES
@@ -13,6 +13,8 @@ OpenLDAP 2.2.28 Engineering
 	Fixed back-meta control propagation bug (ITS#3813)
 	Fixed syncrepl SASL bind crash (ITS#3792)
 	Fixed libldap infinite referral loop (ITS#2894, ITS#3578)
+	Build Environment
+		Added BDB TXN patch in build/BerkeleyDB42.patch

 OpenLDAP 2.2.27 Release
 	Fixed back-bdb/hdb slapcat checkpoint on close (ITS#3703)