libc {

  GLIBC_2.0 {

    pthread_attr_destroy; pthread_attr_init;

    pthread_attr_getdetachstate; pthread_attr_setdetachstate;

    pthread_attr_getinheritsched; pthread_attr_setinheritsched;

    pthread_attr_getschedparam; pthread_attr_setschedparam;

    pthread_attr_getschedpolicy;  pthread_attr_setschedpolicy;

    pthread_attr_getscope; pthread_attr_setscope;

    pthread_condattr_destroy; pthread_condattr_init;

    pthread_cond_broadcast; pthread_cond_destroy;

    pthread_cond_init; pthread_cond_signal; pthread_cond_wait;

    pthread_cond_timedwait;

    pthread_equal; pthread_exit;

    pthread_getschedparam; pthread_setschedparam;

    pthread_mutex_destroy; pthread_mutex_init;

    pthread_mutex_lock; pthread_mutex_unlock;

    pthread_self;

    pthread_setcancelstate; pthread_setcanceltype;

  }

  GLIBC_2.1 {

    pthread_attr_init;

  }

  GLIBC_2.3.2 {

    __register_atfork;

    # Changed pthread_cond_t.

    pthread_cond_init; pthread_cond_destroy;

    pthread_cond_wait; pthread_cond_signal;

    pthread_cond_broadcast; pthread_cond_timedwait;

  }

  # C11 thread symbols.

  GLIBC_2.28 {

    thrd_current; thrd_equal; thrd_sleep; thrd_yield;

  }

  GLIBC_PRIVATE {

    __libc_alloca_cutoff;

    # Internal libc interface to libpthread

    __libc_dl_error_tsd;

    __libc_pthread_init;

    __libc_current_sigrtmin_private; __libc_current_sigrtmax_private;

    __libc_allocate_rtsig_private;

  }

}

libpthread {

  GLIBC_2.0 {

    pthread_create; pthread_join; pthread_self; pthread_equal;

    pthread_exit; pthread_detach;

    pthread_getschedparam; pthread_setschedparam;

    pthread_attr_init; pthread_attr_destroy;

    pthread_attr_getdetachstate; pthread_attr_setdetachstate;

    pthread_attr_getschedparam; pthread_attr_setschedparam;

    pthread_attr_getschedpolicy; pthread_attr_setschedpolicy;

    pthread_attr_getinheritsched; pthread_attr_setinheritsched;

    pthread_attr_getscope; pthread_attr_setscope;

    pthread_mutex_init; pthread_mutex_destroy;

    pthread_mutex_lock; pthread_mutex_trylock; pthread_mutex_unlock;

    pthread_mutexattr_init; pthread_mutexattr_destroy;

    pthread_cond_init; pthread_cond_destroy;

    pthread_cond_wait; pthread_cond_timedwait;

    pthread_cond_signal; pthread_cond_broadcast;

    pthread_condattr_destroy; pthread_condattr_init;

    pthread_cancel; pthread_testcancel;

    pthread_setcancelstate; pthread_setcanceltype;

    pthread_sigmask; pthread_kill;

    pthread_key_create; pthread_key_delete;

    pthread_getspecific; pthread_setspecific;

    pthread_once;

    pthread_atfork;

    flockfile; funlockfile; ftrylockfile;

    # Non-standard POSIX1.x functions.

    pthread_mutexattr_getkind_np; pthread_mutexattr_setkind_np;

    # Protected names for functions used in other shared objects.

    __pthread_mutex_init; __pthread_mutex_destroy;

    __pthread_mutex_lock; __pthread_mutex_trylock; __pthread_mutex_unlock;

    __pthread_mutexattr_init; __pthread_mutexattr_destroy;

    __pthread_mutexattr_settype;

    __pthread_key_create; __pthread_getspecific; __pthread_setspecific;

    __pthread_once; __pthread_atfork;

    _IO_flockfile; _IO_ftrylockfile; _IO_funlockfile;

    # Semaphores.

    sem_destroy; sem_getvalue; sem_init; sem_post; sem_trywait; sem_wait;

    # Special fork handling.

    fork; __fork;

    # Cancellation points.

    close; __close; fcntl; __fcntl; read; __read; write; __write; accept;

    connect; __connect; recv; recvfrom; recvmsg; send; __send; sendmsg; sendto;

    fsync; lseek; __lseek; msync; nanosleep; open; __open; pause; tcdrain;

    system; wait; __wait; waitpid;

    # Hidden entry point (through macros).

    _pthread_cleanup_push; _pthread_cleanup_pop;

    _pthread_cleanup_push_defer; _pthread_cleanup_pop_restore;

    pthread_kill_other_threads_np;

    # The error functions.

    __errno_location; __h_errno_location;

    # Functions which previously have been overwritten.

    sigwait; sigaction; __sigaction; _exit; _Exit; longjmp; siglongjmp;

    raise;

  }

  GLIBC_2.1 {

    pthread_create;

    pthread_attr_init;

    pthread_attr_getguardsize; pthread_attr_setguardsize;

    pthread_attr_getstackaddr; pthread_attr_setstackaddr;

    pthread_attr_getstacksize; pthread_attr_setstacksize;

    pthread_mutexattr_gettype; pthread_mutexattr_settype;

    pthread_rwlock_init; pthread_rwlock_destroy;

    pthread_rwlock_rdlock; pthread_rwlock_wrlock; pthread_rwlock_unlock;

    pthread_rwlock_tryrdlock; pthread_rwlock_trywrlock;

    pthread_rwlockattr_init; pthread_rwlockattr_destroy;

    pthread_rwlockattr_getpshared; pthread_rwlockattr_setpshared;

    pthread_rwlockattr_getkind_np; pthread_rwlockattr_setkind_np;

    pthread_getconcurrency; pthread_setconcurrency;

    # Semaphores.

    sem_destroy; sem_getvalue; sem_init; sem_post; sem_trywait; sem_wait;

    __libc_current_sigrtmin; __libc_current_sigrtmax;

    __libc_allocate_rtsig;

  }

  GLIBC_2.1.1 {

    sem_close; sem_open; sem_unlink;

  }

  GLIBC_2.1.2 {

    __libpthread_version_placeholder;

  }

  GLIBC_2.2 {

    pthread_mutexattr_getpshared; pthread_mutexattr_setpshared;

    pthread_condattr_getpshared; pthread_condattr_setpshared;

    # New functions from IEEE Std. 1003.1-2001.

    pthread_mutex_timedlock;

    pthread_rwlock_timedrdlock; pthread_rwlock_timedwrlock;

    pthread_attr_getstack; pthread_attr_setstack;

    pthread_spin_destroy; pthread_spin_init; pthread_spin_lock;

    pthread_spin_trylock; pthread_spin_unlock;

    pthread_barrier_init; pthread_barrier_destroy; pthread_barrier_wait;

    pthread_barrierattr_destroy; pthread_barrierattr_init;

    pthread_barrierattr_setpshared;

    sem_timedwait;

    pthread_yield;

    pthread_getcpuclockid;

    # Cancellation points.

    lseek64; open64; __open64; pread; pread64; __pread64; pwrite; pwrite64;

    __pwrite64;

    # Names used internally.

    __pthread_rwlock_init; __pthread_rwlock_destroy;

    __pthread_rwlock_rdlock; __pthread_rwlock_tryrdlock;

    __pthread_rwlock_wrlock; __pthread_rwlock_trywrlock;

    __pthread_rwlock_unlock;

    __res_state;

  }

  GLIBC_2.2.3 {

    # Extensions.

    pthread_getattr_np;

  }

  GLIBC_2.2.6 {

    # Cancellation wrapper

    __nanosleep;

  }

  GLIBC_2.3.2 {

    # Changed pthread_cond_t.

    pthread_cond_init; pthread_cond_destroy;

    pthread_cond_wait; pthread_cond_timedwait;

    pthread_cond_signal; pthread_cond_broadcast;

  }

  GLIBC_2.3.3 {

    # 1003.1-2001 function accidentally left out in 2.2.

    pthread_barrierattr_getpshared;

    # Unix CS option.

    pthread_condattr_getclock; pthread_condattr_setclock;

    # Proposed API extensions.

    pthread_tryjoin_np; pthread_timedjoin_np;

    # New cancellation cleanup handling.

    __pthread_register_cancel; __pthread_unregister_cancel;

    __pthread_register_cancel_defer; __pthread_unregister_cancel_restore;

    __pthread_unwind_next;

    __pthread_cleanup_routine;

    # affinity interfaces without size parameter

    pthread_getaffinity_np; pthread_setaffinity_np;

    pthread_attr_getaffinity_np; pthread_attr_setaffinity_np;

  }

  GLIBC_2.3.4 {

    # New affinity interfaces.

    pthread_getaffinity_np; pthread_setaffinity_np;

    pthread_attr_getaffinity_np; pthread_attr_setaffinity_np;

    pthread_setschedprio;

  }

  GLIBC_2.4 {

    pthread_mutexattr_getrobust_np; pthread_mutexattr_setrobust_np;

    pthread_mutex_consistent_np;

    pthread_mutexattr_getprotocol; pthread_mutexattr_setprotocol;

    pthread_mutexattr_getprioceiling; pthread_mutexattr_setprioceiling;

    pthread_mutex_getprioceiling; pthread_mutex_setprioceiling;

  };

  GLIBC_2.11 {

    pthread_sigqueue;

  };

  GLIBC_2.12 {

    pthread_mutex_consistent; pthread_mutexattr_getrobust;

    pthread_mutexattr_setrobust;

    pthread_setname_np; pthread_getname_np;

  };

  GLIBC_2.18 {

    pthread_getattr_default_np;

    pthread_setattr_default_np;

  }

  GLIBC_2.20 {

  }

  GLIBC_2.22 {

  }

  # C11 thread symbols.

  GLIBC_2.28 {

    thrd_create; thrd_detach; thrd_exit; thrd_join;

    mtx_init; mtx_lock; mtx_timedlock; mtx_trylock; mtx_unlock; mtx_destroy;

    call_once; cnd_broadcast; cnd_destroy; cnd_init; cnd_signal;

    cnd_timedwait; cnd_wait; tss_create; tss_delete; tss_get; tss_set;

  }

  GLIBC_PRIVATE {

    __pthread_initialize_minimal;

    __pthread_clock_gettime; __pthread_clock_settime;

    __pthread_unwind; __pthread_get_minstack;

    __pthread_barrier_init; __pthread_barrier_wait;

    __shm_directory;

    __libpthread_freeres;

  }

}