librt {

  GLIBC_2.1 {

    # AIO functions.

    aio_cancel; aio_cancel64; aio_error; aio_error64; aio_fsync; aio_fsync64;

    aio_init; aio_read; aio_read64; aio_return; aio_return64; aio_suspend;

    aio_suspend64; aio_write; aio_write64; lio_listio; lio_listio64;

  }

  GLIBC_2.2 {

    # s*

    shm_open; shm_unlink;

    # t*

    timer_create; timer_delete; timer_getoverrun; timer_gettime;

    timer_settime;

  }

  GLIBC_2.3.4 {

    # m*

    mq_open; mq_close; mq_unlink; mq_getattr; mq_setattr;

    mq_notify; mq_send; mq_receive; mq_timedsend; mq_timedreceive;

  }

  GLIBC_2.7 {

   __mq_open_2;

  }

}