__atomic_always_lock_free($1, 0). If the C compiler is not GCC or is
an older version of GCC, the value does not matter.])
fi])
+
+dnl OVS_CHECK_POSIX_AIO
+AC_DEFUN([OVS_CHECK_POSIX_AIO],
+ [AC_SEARCH_LIBS([aio_write], [rt])
+ AM_CONDITIONAL([HAVE_POSIX_AIO], [test "$ac_cv_search_aio_write" != no])])