--- configure.in.old	2008-10-13 22:48:51.000000000 +0200
+++ configure.in	2008-10-13 22:53:59.000000000 +0200
@@ -1,4 +1,4 @@
-AC_PREREQ(2.52)
+AC_PREREQ(2.60)
 dnl ==============================================================
 dnl Process this file with autoconf to produce a configure script.
 dnl ==============================================================
@@ -122,10 +122,19 @@
 AC_SUBST(DISPATCHER_CFLAGS)
 
 dnl check for PolicyKit
-PKG_CHECK_MODULES(POLKIT, polkit-dbus >= $POLICYKIT_REQUIRED, have_polkit=yes, have_polkit=no)
 
-if test "$have_polkit" = "yes"; then
-  AC_DEFINE(HAVE_POLKIT, [1], [whether PolicyKit was found])
+have_polkit=no
+AC_ARG_ENABLE(polkit,
+	AS_HELP_STRING([--enable-polkit],[Enable policykit support]))
+
+if test "x$enable_polkit" = "xyes"; then
+	PKG_CHECK_MODULES(POLKIT, polkit-dbus >= $POLICYKIT_REQUIRED, have_polkit=yes)
+
+	if test "$have_polkit" = "yes"; then
+		AC_DEFINE(HAVE_POLKIT, [1], [whether PolicyKit was found])
+	else
+		AC_MSG_ERROR([policykit support requested but not found])
+	fi
 fi
 
 AC_SUBST(POLKIT_LIBS)