--- configure.ac~	2009-02-03 16:49:16.000000000 +0100
+++ configure.ac	2009-06-03 17:30:18.000000000 +0200
@@ -99,7 +99,7 @@
 fi
 
 NEED_LIBGNUTLS_VERSION=1.0.16
-AM_PATH_LIBGNUTLS("$NEED_LIBGNUTLS_VERSION")
+PKG_CHECK_MODULES(LIBGNUTLS, [gnutls >= $NEED_LIBGNUTLS_VERSION])
 if test "x$LIBGNUTLS_LIBS" = "x"; then
   AC_MSG_ERROR([libgnutls is needed.
                 See www.gnu.org/software/gnutls/ .])