libc {
  GLIBC_2.0 {
    # functions with special/multiple interfaces
    _mcount;

    # Profiling support
    __monstartup; _mcleanup; __profile_frequency;

    # m*
    monstartup;

    # p*
    profil; profil_counter;
  }
  GLIBC_2.2 {
    # m*
    moncontrol;
  }
  GLIBC_2.2.3 {
    sprofil;
  }
}