Require 2.1.3 or higher for Cyrus SASL 2

build/openldap.m4

@@ -1183,3 +1183,16 @@ AC_DEFUN(OL_FUNC_GETHOSTBYADDR_R_NARGS,
   fi
 ])dnl
 dnl
+dnl --------------------------------------------------------------------
+dnl Check for Cyrus SASL version compatility, need 2.1.3 or newer
+AC_DEFUN([OL_SASL2_COMPAT],
+[AC_CACHE_CHECK([Cyrus SASL 2 library version], [ol_cv_sasl2_compat],[
+	AC_EGREP_CPP(__sasl2_version_compat,[
+#include <sasl/sasl.h>
+
+/* require 2.1.3 or later */
+#if SASL_VERSION_MAJOR >= 2 && (SASL_VERSION_MINOR > 1 || SASL_VERSION_STEP > 2)
+	__sasl2_version_compat
+#endif
+	],	[ol_cv_sasl2_compat=yes], [ol_cv_sasl2_compat=no])])
+])

configure.in

@@ -2169,6 +2169,14 @@ if test $ol_with_cyrus_sasl != no ; then
 				[ol_link_sasl="-lsasl"])])
 	fi
 
+	if test $ol_link_sasl = "-lsasl2"; then
+		OL_SASL2_COMPAT
+
+		if test $ol_cv_sasl2_compat = no ; then
+			ol_link_sasl=no
+			AC_MSG_ERROR(SASL: Cyrus SASL2 version obsolete)
+		fi
+	fi
 	if test $ol_link_sasl = no ; then
 		if test $ol_with_cyrus_sasl != auto ; then
 			AC_MSG_ERROR([Could not locate Cyrus SASL])