_AC_DEFINE_AND_SUBST([DEFAULT_KERNEL_CHANNEL_LIVE_TIMER], [_DEFAULT_CHANNEL_LIVE_TIMER])
_AC_DEFINE_AND_SUBST([DEFAULT_KERNEL_CHANNEL_READ_TIMER], [_DEFAULT_CHANNEL_READ_TIMER])
_AC_DEFINE_AND_SUBST([DEFAULT_KERNEL_CHANNEL_SUBBUF_NUM], [_DEFAULT_CHANNEL_SUBBUF_NUM])
_AC_DEFINE_AND_SUBST([DEFAULT_KERNEL_CHANNEL_LIVE_TIMER], [_DEFAULT_CHANNEL_LIVE_TIMER])
_AC_DEFINE_AND_SUBST([DEFAULT_KERNEL_CHANNEL_READ_TIMER], [_DEFAULT_CHANNEL_READ_TIMER])
_AC_DEFINE_AND_SUBST([DEFAULT_KERNEL_CHANNEL_SUBBUF_NUM], [_DEFAULT_CHANNEL_SUBBUF_NUM])