libc {

  GLIBC_2.0 {

    # functions with special/multiple interfaces

    __sigpause;  __sysv_signal;

    # functions formerly used in inline functions or macros

    __sigaddset; __sigdelset; __sigismember;

    # functions used in other libraries

    __sigaction;

    # b*

    bsd_signal;

    # g*

    gsignal;

    # k*

    kill; killpg;

    # p*

    psignal;

    # r*

    raise;

    # s*

    sigaction; sigaddset; sigaltstack; sigandset; sigblock; sigdelset;

    sigemptyset; sigfillset; siggetmask; siginterrupt; sigisemptyset;

    sigismember; siglongjmp; signal; sigorset; sigpause; sigpending;

    sigprocmask; sigreturn; sigsetmask; sigstack; sigsuspend; sigvec;

    sigwait; ssignal;

  }

  GLIBC_2.1 {

    # helper functions

    __libc_current_sigrtmin; __libc_current_sigrtmax; __libc_allocate_rtsig;

    # s*

    sighold; sigrelse; sigignore; sigset; sysv_signal;

    # New RT signal functions.

    sigqueue; sigtimedwait; sigwaitinfo;

  }

  GLIBC_2.1.3 {

    # LinuxThreads needs this entry point.

    __sigsuspend;

  }

  GLIBC_2.2 {

    # Needed to provide a pointer to the XPG sigpause function.

    __xpg_sigpause;

  }

  GLIBC_2.21 {

  }

}