libc {
  GLIBC_2.0 {
    # global variables
    _IO_list_all; _IO_stderr_; _IO_stdin_; _IO_stdout_;

    # functions used in inline functions or macros
    __getdelim;

    # functions used in inline functions or macros
    _IO_getc; _IO_peekc_unlocked; _IO_putc; _IO_feof; _IO_ferror;
    __uflow; __underflow; __overflow;

    # functions used in other libraries
    __vsscanf; __vsnprintf;

    # libio
    _IO_adjust_column; _IO_clearerr; _IO_default_doallocate;
    _IO_default_finish; _IO_default_pbackfail; _IO_default_uflow;
    _IO_default_xsgetn; _IO_default_xsputn; _IO_do_write;
    _IO_doallocbuf; _IO_fclose; _IO_fdopen; _IO_feof; _IO_ferror;
    _IO_fflush; _IO_fgetc; _IO_fgetpos; _IO_fgets; _IO_file_attach;
    _IO_file_close; _IO_file_close_it; _IO_file_doallocate;
    _IO_file_fopen; _IO_file_init; _IO_file_jumps; _IO_file_open;
    _IO_file_overflow; _IO_file_read; _IO_file_seek; _IO_file_seekoff;
    _IO_file_setbuf; _IO_file_stat; _IO_file_sync; _IO_file_underflow;
    _IO_file_write; _IO_file_xsputn; _IO_fileno; _IO_flockfile;
    _IO_flush_all; _IO_flush_all_linebuffered; _IO_fopen; _IO_fprintf;
    _IO_fputs; _IO_fread; _IO_free_backup_area; _IO_freopen;
    _IO_fscanf; _IO_fseek; _IO_fsetpos; _IO_ftell; _IO_ftrylockfile;
    _IO_funlockfile; _IO_fwrite; _IO_getc; _IO_getline; _IO_gets;
    _IO_init; _IO_init_marker; _IO_link_in; _IO_marker_delta;
    _IO_marker_difference; _IO_padn; _IO_pclose; _IO_peekc_locked;
    _IO_perror; _IO_popen; _IO_printf; _IO_proc_close; _IO_proc_open;
    _IO_putc; _IO_puts; _IO_remove_marker; _IO_rewind; _IO_scanf;
    _IO_seekmark; _IO_seekoff; _IO_seekpos; _IO_setb; _IO_setbuf;
    _IO_setbuffer; _IO_setlinebuf; _IO_setvbuf; _IO_sgetn;
    _IO_sprintf; _IO_sputbackc; _IO_sscanf; _IO_str_init_readonly;
    _IO_str_init_static; _IO_str_overflow; _IO_str_pbackfail;
    _IO_str_seekoff; _IO_str_underflow; _IO_sungetc;
    _IO_switch_to_get_mode; _IO_un_link; _IO_ungetc;
    _IO_unsave_markers; _IO_vfprintf; _IO_vfscanf; _IO_vsprintf;

    # variables in normal name space
    stderr; stdin; stdout;

    # c*
    clearerr; clearerr_unlocked;

    # f*
    fclose; fcloseall; fdopen; feof; feof_locked; feof_unlocked; ferror;
    ferror_locked; ferror_unlocked; fflush; fflush_locked; fflush_unlocked;
    fgetc; fgetpos; fgets; fileno; fileno_locked; fileno_unlocked;
    fopen; fopencookie; fputc; fputc_locked; fputc_unlocked; fputs;
    fread; freopen; fseek; fsetpos; ftell; fwrite;

    # g*
    getc; getc_locked; getc_unlocked; getchar; getchar_unlocked; getdelim;
    gets;

    # o*
    open_memstream; obstack_printf; obstack_vprintf;

    # p*
    pclose; popen; putc; putc_locked; putc_unlocked; putchar;
    putchar_unlocked; puts;

    # r*
    rewind;

    # s*
    setbuf; setbuffer; setlinebuf; setvbuf;

    # u*
    ungetc;

    # v*
    vasprintf; vdprintf; vscanf; vsnprintf; vsprintf; vsscanf;
  }
  GLIBC_2.1 {
    # global variables
    _IO_2_1_stdin_; _IO_2_1_stdout_; _IO_2_1_stderr_;

    # functions used in other libraries
    _IO_fclose; _IO_fopen; _IO_fdopen; _IO_popen; __asprintf;

    # functions used in libstdc++
    _IO_do_write; _IO_file_attach; _IO_file_close_it; _IO_file_finish;
    _IO_file_fopen; _IO_file_init; _IO_file_overflow; _IO_file_seekoff;
    _IO_file_setbuf; _IO_file_sync; _IO_file_underflow;
    _IO_file_write; _IO_file_xsputn; _IO_proc_open; _IO_proc_close;

    # Changed getline function in libio.
    _IO_getline_info;

    # f*
    fgetpos64; fopen64; freopen64; fseeko; fseeko64; fsetpos64; ftello;
    ftello64; fopen; fclose; fdopen; fread_unlocked; fwrite_unlocked;
    fgets_unlocked; fputs_unlocked; fgetc_unlocked;

    # p*
    pclose; popen;
  }
  GLIBC_2.2 {
    # functions used in libstdc++
    _IO_fgetpos; _IO_fgetpos64; _IO_fsetpos; _IO_fsetpos64;
    _IO_wdo_write; _IO_wfile_jumps; _IO_wfile_overflow; _IO_wfile_seekoff;
    _IO_wfile_setbuf; _IO_wfile_sync; _IO_wfile_underflow; _IO_wfile_xsputn;
    _IO_adjust_wcolumn; _IO_free_wbackup_area; _IO_init_wmarker;
    _IO_least_wmarker; _IO_seekwmark; _IO_sputbackwc; _IO_sungetwc;
    _IO_switch_to_main_wget_area; _IO_switch_to_wbackup_area;
    _IO_switch_to_wget_mode; _IO_unsave_wmarkers; _IO_wdefault_doallocate;
    _IO_wdefault_finish; _IO_wdefault_pbackfail; _IO_wdefault_setbuf;
    _IO_wdefault_uflow; _IO_wdefault_xsgetn; _IO_wdefault_xsputn;
    _IO_wdoallocbuf; _IO_wmarker_delta; _IO_wsetb; __woverflow; __wuflow;
    __wunderflow;

    # LinuxThreads uses this protected interface
    _IO_iter_begin; _IO_iter_end; _IO_iter_next; _IO_iter_file;
    _IO_list_lock; _IO_list_unlock; _IO_list_resetlock;

    # Functions to access FILE internals.
    __fbufsize; __freading; __fwriting; __freadable; __fwritable; __flbf;
    __fpurge; __fpending; __fsetlocking; _flushlbf;

    # f*
    fgetpos; fgetpos64; fgetwc; fgetwc_unlocked; fgetws; fgetws_unlocked;
    fputwc; fputwc_unlocked; fputws; fputws_unlocked; fsetpos; fsetpos64;
    fwide; fwprintf; fwscanf; fopencookie; fmemopen;

    # g*
    getwc; getwc_unlocked; getwchar; getwchar_unlocked;

    # p*
    putwc; putwc_unlocked; putwchar; putwchar_unlocked;

    # s*
    swprintf; swscanf;

    # u*
    ungetwc;

    # v*
    vfwprintf; vswprintf; vwprintf; vfwscanf; vswscanf; vwscanf;

    # w*
    wprintf; wscanf;
  }
  GLIBC_2.4 {
    open_wmemstream;
  }
  GLIBC_2.22 {
    # f*
    fmemopen;
  }
  GLIBC_PRIVATE {
    # Used by NPTL and librt
    __libc_fatal;
  }
}