--- configure.ac.orig	2015-03-09 09:51:22.000000000 +0100

+++ configure.ac	2015-03-09 09:56:17.000000000 +0100

@@ -141,22 +141,21 @@

 ### Windows uses native OS calls

 ### OSX requires terminal-notifier

-AS_IF([test "x$PLATFORM" = xosx],

-        [AS_IF([test "x$enable_notifications" != xno],

+AS_IF([test "x$enable_notifications" != xno],

             [NOTIFIER_PATH="no"

             AC_PATH_PROG(NOTIFIER_PATH, terminal-notifier, no)

             AS_IF([test "x$NOTIFIER_PATH" = xno],

                 [AS_IF([test "x$enable_notifications" = xyes],

-                    [AC_MSG_ERROR([terminal-notifier not found, required for desktop notifications.])],

+                    [AC_MSG_WARN([terminal-notifier not found, required for desktop notifications on OS X.])],

                     [AC_MSG_NOTICE([Desktop notifications not supported.])])],

-                [AC_DEFINE([HAVE_OSXNOTIFY], [1], [terminal notifier])])])],

-    [test "x$PLATFORM" = xnix],

-        [AS_IF([test "x$enable_notifications" != xno],

+                [AC_DEFINE([HAVE_OSXNOTIFY], [1], [terminal notifier])])])

+

+AS_IF([test "x$enable_notifications" != xno],

             [PKG_CHECK_MODULES([libnotify], [libnotify],

                 [AC_DEFINE([HAVE_LIBNOTIFY], [1], [libnotify module])],

                 [AS_IF([test "x$enable_notifications" = xyes],

-                    [AC_MSG_ERROR([libnotify is required but does not exist])],

-                    [AC_MSG_NOTICE([libnotify support will be disabled])])])])])

+                    [AC_MSG_WARN([libnotify is required but does not exist])],

+                    [AC_MSG_NOTICE([libnotify support will be disabled])])])])

 # TODO: rewrite this

 if test "x$with_xscreensaver" = xyes; then