AC_DEFUN([DOVECOT_NOTIFY], [

have_notify=none

if test "$notify" = "" || test "$notify" = "inotify" ; then

dnl * inotify?

AC_MSG_CHECKING([whether we can use inotify])

if test "$ac_cv_func_inotify_init" = yes; then

have_notify=inotify

notify=inotify

AC_MSG_RESULT("yes")

AC_DEFINE(IOLOOP_NOTIFY_INOTIFY,, [Use Linux inotify])

else

AC_MSG_RESULT("no")

if test "$notify" = "inotify"; then

AC_MSG_ERROR([inotify requested but not available])

notify=""

fi

fi

fi

if (test "$notify" = "" && test "$ioloop" = kqueue) || test "$notify" = "kqueue"; then

dnl * BSD kqueue() notify

AC_MSG_CHECKING([whether we can use BSD kqueue() notify])

if test "$ac_cv_func_kqueue" = yes && test "$ac_cv_func_kevent" = yes ; then

have_notify=kqueue

notify=kqueue

AC_MSG_RESULT("yes")

AC_DEFINE(IOLOOP_NOTIFY_KQUEUE,, [Use BSD kqueue directory changes notification])

else

AC_MSG_RESULT("no")

if test "$notify" = "kqueue" ; then

AC_MSG_ERROR([kqueue notify requested but kqueue() is not available])

notify=""

fi

fi

fi

if test "$have_notify" = "none"; then

AC_DEFINE(IOLOOP_NOTIFY_NONE,, [No special notify support])

fi

])