Align with back-ldbm version

[openldap] / build / openldap.m4

diff --git a/build/openldap.m4 b/build/openldap.m4
index 5b3e59de4ec87680c32cd51590e82815cb37c08c..81a7c8c66d8a0011afbf2953bf20c8c19b391db6 100644 (file)
--- a/build/openldap.m4
+++ b/build/openldap.m4
@@ -312,8 +312,8 @@ dnl Try to locate appropriate library
 AC_DEFUN([OL_BERKELEY_DB_LINK],
 [ol_cv_lib_db=no
 OL_BERKELEY_DB_TRY(ol_cv_db_none)
-OL_BERKELEY_DB_TRY(ol_cv_db_db,[-ldb])
 OL_BERKELEY_DB_TRY(ol_cv_db_db4,[-ldb4])
+OL_BERKELEY_DB_TRY(ol_cv_db_db,[-ldb])
 OL_BERKELEY_DB_TRY(ol_cv_db_db3,[-ldb3])
 OL_BERKELEY_DB_TRY(ol_cv_db_db2,[-ldb2])
 OL_BERKELEY_DB_TRY(ol_cv_db_db1,[-ldb1])
@@ -417,12 +417,29 @@ if test $ac_cv_header_db_h = yes; then
        fi
 fi
 ])
-dnl
+dnl --------------------------------------------------------------------
+dnl Check for version compatility with back-bdb
+AC_DEFUN([OL_BDB_COMPAT],
+[AC_CACHE_CHECK([Berkeley DB version for BDB backend], [ol_cv_bdb_compat],[
+       AC_EGREP_CPP(__db_version_compat,[
+#include <db.h>
+
+ /* this check could be improved */
+#ifndef DB_VERSION_MAJOR
+#      define DB_VERSION_MAJOR 1
+#endif
+
+/* require 4.0 or later */
+#if DB_VERSION_MAJOR >= 4 
+       __db_version_compat
+#endif
+       ],      [ol_cv_bdb_compat=yes], [ol_cv_bdb_compat=no])])
+])
+
 dnl --------------------------------------------------------------------
 dnl Find old Berkeley DB 1.85/1.86
 AC_DEFUN([OL_BERKELEY_COMPAT_DB],
-[ol_cv_berkeley_db=no
-AC_CHECK_HEADERS(db_185.h db.h)
+[AC_CHECK_HEADERS(db_185.h db.h)
 if test $ac_cv_header_db_185_h = yes -o $ac_cv_header_db_h = yes; then
        AC_CACHE_CHECK([if Berkeley DB header compatibility], [ol_cv_header_db1],[
                AC_EGREP_CPP(__db_version_1,[