diff -Nur libwnck-2.26.2.orig/configure.in libwnck-2.26.2/configure.in
--- libwnck-2.26.2.orig/configure.in	2009-08-03 17:05:52.879820272 -0500
+++ libwnck-2.26.2/configure.in	2009-08-03 17:07:46.743383628 -0500
@@ -80,15 +80,22 @@
 
 AC_PATH_PROG(PKG_CONFIG, pkg-config)
 
-AC_MSG_CHECKING([if building with libstartup-notification])
-STARTUP_NOTIFICATION_REQUIRED=0.4
-if $PKG_CONFIG --atleast-version $STARTUP_NOTIFICATION_REQUIRED libstartup-notification-1.0; then
-  AC_MSG_RESULT([yes])
-  AC_DEFINE_UNQUOTED(HAVE_STARTUP_NOTIFICATION, 1, [Define if you have libstartup-notification])
-  STARTUP_NOTIFICATION_PACKAGE=libstartup-notification-1.0
-else
-  AC_MSG_RESULT([no])
-  STARTUP_NOTIFICATION_PACKAGE=
+AC_ARG_ENABLE(startup-notification,
+              [AC_HELP_STRING([--enable-startup-notification],
+                              [startup notification library [default=yes]])],,
+              [enable_startup_notification=yes])
+
+STARTUP_NOTIFICATION_PACKAGE=
+if test "x$enable_startup_notification" = "xyes"; then
+   AC_MSG_CHECKING([if building with libstartup-notification])
+   STARTUP_NOTIFICATION_REQUIRED=0.4
+   if $PKG_CONFIG --atleast-version $STARTUP_NOTIFICATION_REQUIRED libstartup-notification-1.0; then
+     AC_MSG_RESULT([yes])
+     AC_DEFINE_UNQUOTED(HAVE_STARTUP_NOTIFICATION, 1, [Define if you have libstartup-notification])
+     STARTUP_NOTIFICATION_PACKAGE=libstartup-notification-1.0
+   else
+     AC_MSG_RESULT([no])
+   fi
 fi
 AC_SUBST(STARTUP_NOTIFICATION_PACKAGE)