libc {
  GLIBC_2.0 {
    # Exception handling support functions from libgcc
    __register_frame; __register_frame_table; __deregister_frame;
    __register_frame_info; __deregister_frame_info; __frame_state_for;
    __register_frame_info_table;
  }
  GLIBC_2.1 {
    ioperm; iopl;
    inb; inw; inl;
    outb; outw; outl;
  }
  GLIBC_2.2 {
    # New rlimit interface
    getrlimit; setrlimit; getrlimit64;
  }
}