#define LDBM_REPLACE GDBM_REPLACE
#define LDBM_SYNC 0x80000000
+#elif defined( HAVE_MDBM )
+
+/*****************************************************************
+ * *
+ * use mdbm if possible *
+ * *
+ *****************************************************************/
+
+#include <mdbm.h>
+
+LDAP_BEGIN_DECL
+
+typedef datum Datum;
+typedef MDBM *LDBM;
+
+LDAP_END_DECL
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+/* for ldbm_open */
+#define LDBM_READER O_RDONLY
+#define LDBM_WRITER O_RDWR
+#define LDBM_WRCREAT (O_RDWR|O_CREAT)
+#define LDBM_NEWDB (O_RDWR|O_TRUNC|O_CREAT)
+#define LDBM_FAST 0
+
+#define LDBM_SUFFIX ".mdbm"
+
+/* for ldbm_insert */
+#define LDBM_INSERT MDBM_INSERT
+#define LDBM_REPLACE MDBM_REPLACE
+#define LDBM_SYNC 0x80000000
+
#elif defined( HAVE_NDBM )