--- configure.in	2007-05-18 04:36:10.000000000 -0400
+++ configure.in.new	2008-02-27 22:21:18.000000000 -0500
@@ -63,12 +63,6 @@
 
 AC_LANG([C++])
 
-AC_PATH_CLN(1.1.0, [
-     	LIBS="$LIBS $CLN_LIBS"
-     	CPPFLAGS="$CPPFLAGS $CLN_CPPFLAGS"
-  	AC_DEFINE(HAVE_LIBCLN,1,[If CLN can be used])
-], AC_MSG_ERROR([No suitable installed version of CLN could be found.]))
-
 PKG_CHECK_MODULES(GLIB, [
 	glib-2.0 >= 2.4
 	libxml-2.0
@@ -95,6 +89,17 @@
 AC_SUBST(QALCULATE_CFLAGS)
 AC_SUBST(QALCULATE_LIBS)
 
+PKG_CHECK_MODULES(CLN, [ cln >= 1.2 ],
+                  [have_recent_cln=yes], [have_recent_cln=no])
+AC_SUBST(CLN_CPPFLAGS)
+AC_SUBST(CLN_LIBS)
+
+if test "$have_recent_cln" = "yes" ; then
+   AC_DEFINE(HAVE_LIBCLN12, 1, [Define if CLN can be used])
+   LIBS="$LIBS $CLN_LIBS"
+   CPPFLAGS="$CPPFLAGS $CLN_CPPFLAGS"
+fi
+
 LIBGNOME_REQUIRED=2.0.0
 
 USE_LIBGNOME="auto"