diff -Nurd -x'*~' ConsoleKit-0.3.0.orig/configure.ac ConsoleKit-0.3.0/configure.ac
--- ConsoleKit-0.3.0.orig/configure.ac	2008-07-30 20:35:53.000000000 -0400
+++ ConsoleKit-0.3.0/configure.ac	2008-12-03 01:35:23.000000000 -0500
@@ -69,10 +69,25 @@
   dbus-1 >= $DBUS_REQUIRED_VERSION
 )
 PKG_CHECK_MODULES(TOOLS,
-  x11 >= $X11_REQUIRED_VERSION
   glib-2.0 >= $GLIB_REQUIRED_VERSION
 )
 
+PKG_CHECK_MODULES(X11,
+  x11 >= $X11_REQUIRED_VERSION
+,
+[
+  TOOLS_CFLAGS="$TOOLS_CFLAGS $X11_CFLAGS"
+  TOOLS_LIBS="$TOOLS_LIBS $X11_LIBS"
+],
+[
+  AC_PATH_XTRA
+  if test "$have_x" != yes; then
+         AC_MSG_ERROR([Could not find X11])
+  fi
+  TOOLS_CFLAGS="$TOOLS_CFLAGS $X_CFLAGS"
+  TOOLS_LIBS="$TOOLS_LIBS $X_LIBS -lX11"
+])
+
 PKG_CHECK_MODULES(HISTORY,
   glib-2.0 >= $GLIB_REQUIRED_VERSION
 )