libc {
  GLIBC_2.0 {
    # Functions from libgcc.
    __divdi3; __moddi3; __udivdi3; __umoddi3;
  }
  GLIBC_2.1 {
    # global variable
    _fp_hw;
  }
  GLIBC_2.1.1 {
    # extern inline functions used by <bits/string.h>
    __memcpy_c; __memset_cc; __memset_cg; __memset_gg; __strchr_c; __strchr_g;
    __strchrnul_c; __strchrnul_g;
  }
}