toolchain/eglibc/config/Config.in

   1 config EGLIBC_OPTION_EGLIBC_ADVANCED_INET6
   2    bool "IPv6 Advanced Sockets API support (RFC3542)"
   3    default y
   4    depends EGLIBC_OPTION_EGLIBC_INET
   5    help
   6        This option group includes the functions specified by RFC 3542,
   7        "Advanced Sockets Application Program Interface (API) for
   8        IPv6".
   9
  10        This option group includes the following functions:
  11
  12          inet6_opt_append
  13          inet6_opt_find
  14          inet6_opt_finish
  15          inet6_opt_get_val
  16          inet6_opt_init
  17          inet6_alloc
  18          inet6_append
  19          inet6_find
  20          inet6_init
  21          inet6_next
  22          inet6_space
  23          inet6_opt_next
  24          inet6_opt_set_val
  25          inet6_rth_add
  26          inet6_rth_getaddr
  27          inet6_rth_init
  28          inet6_rth_reverse
  29          inet6_rth_segments
  30          inet6_rth_space
  31
  32 config EGLIBC_OPTION_EGLIBC_BACKTRACE
  33    bool "Functions for producing backtraces"
  34    default y
  35    help
  36        This option group includes functions for producing a list of
  37        the function calls that are currently active in a thread, from
  38        within the thread itself.  These functions are often used
  39        within signal handlers, to produce diagnostic output.
  40
  41        This option group includes the following functions:
  42
  43          backtrace
  44          backtrace_symbols
  45          backtrace_symbols_fd
  46
  47 config EGLIBC_OPTION_EGLIBC_BSD
  48    bool "BSD-specific functions, and their compatibility stubs"
  49    default y
  50    help
  51        This option group includes functions specific to BSD kernels.
  52        A number of these functions have stub versions that are also
  53        included in libraries built for non-BSD systems for
  54        compatibility.
  55
  56        This option group includes the following functions:
  57
  58          chflags
  59          fchflags
  60          lchmod
  61          revoke
  62          setlogin
  63
  64 config EGLIBC_OPTION_EGLIBC_CXX_TESTS
  65    bool "Tests that link against the standard C++ library."
  66    default y
  67    depends EGLIBC_OPTION_POSIX_WIDE_CHAR_DEVICE_IO
  68    depends EGLIBC_OPTION_EGLIBC_LIBM
  69    help
  70        This option group does not include any C library functions;
  71        instead, it controls which EGLIBC tests an ordinary 'make
  72        tests' runs.  With this group disabled, tests that would
  73        normally link against the standard C++ library are not
  74        run.
  75
  76        The standard C++ library depends on the math library 'libm' and
  77        the wide character I/O functions included in EGLIBC.  If those
  78        option groups are disabled, this test must also be disabled.
  79
  80 config EGLIBC_OPTION_EGLIBC_CATGETS
  81    bool "Functions for accessing message catalogs"
  82    default y
  83    depends EGLIBC_OPTION_EGLIBC_LOCALE_CODE
  84    help
  85        This option group includes functions for accessing message
  86        catalogs: catopen, catclose, and catgets.
  87
  88        This option group depends on the EGLIBC_LOCALE_CODE
  89        option group; if you disable that, you must also disable this.
  90
  91 config EGLIBC_OPTION_EGLIBC_CHARSETS
  92    bool "iconv/gconv character set conversion libraries"
  93    default y
  94    help
  95
  96        This option group includes support for character sets other
  97        than ASCII (ANSI_X3.4-1968) and Unicode and ISO-10646 in their
  98        various encodings.  This affects both the character sets
  99        supported by the wide and multibyte character functions, and
 100        those supported by the 'iconv' functions.
 101
 102        With this option group disabled, EGLIBC supports only the
 103        following character sets:
 104
 105           ANSI_X3.4         - ASCII
 106           ANSI_X3.4-1968
 107           ANSI_X3.4-1986
 108           ASCII
 109           CP367
 110           CSASCII
 111           IBM367
 112           ISO-IR-6
 113           ISO646-US
 114           ISO_646.IRV:1991
 115           OSF00010020
 116           US
 117           US-ASCII
 118
 119           10646-1:1993      - ISO 10646, in big-endian UCS4 form
 120           10646-1:1993/UCS4
 121           CSUCS4
 122           ISO-10646
 123           ISO-10646/UCS4
 124           OSF00010104
 125           OSF00010105
 126           OSF00010106
 127           UCS-4
 128           UCS-4BE
 129           UCS4
 130
 131           UCS-4LE           - ISO 10646, in little-endian UCS4 form
 132
 133           ISO-10646/UTF-8   - ISO 10646, in UTF-8 form
 134           ISO-10646/UTF8
 135           ISO-IR-193
 136           OSF05010001
 137           UTF-8
 138           UTF8
 139
 140           ISO-10646/UCS2    - ISO 10646, in target-endian UCS2 form
 141           OSF00010100
 142           OSF00010101
 143           OSF00010102
 144           UCS-2
 145           UCS2
 146
 147           UCS-2BE           - ISO 10646, in big-endian UCS2 form
 148           UNICODEBIG
 149
 150           UCS-2LE           - ISO 10646, in little-endian UCS2 form
 151           UNICODELITTLE
 152
 153           WCHAR_T           - EGLIBC's internal form (target-endian,
 154                               32-bit ISO 10646)
 155
 156 config EGLIBC_OPTION_EGLIBC_DB_ALIASES
 157    bool "Functions for accessing the mail aliases database"
 158    default y
 159    help
 160        This option group includes functions for looking up mail
 161        aliases in '/etc/aliases' or using nsswitch.  It includes the
 162        following functions:
 163
 164          endaliasent
 165          getaliasbyname
 166          getaliasbyname_r
 167          getaliasent
 168          getaliasent_r
 169          setaliasent
 170
 171        When this option group is disabled, the NSS service libraries
 172        also lack support for querying their mail alias tables.
 173
 174 config EGLIBC_OPTION_EGLIBC_ENVZ
 175    bool "Functions for handling envz-style environment vectors."
 176    default y
 177    help
 178        This option group contains functions for creating and operating
 179        on envz vectors.  An "envz vector" is a vector of strings in a
 180        contiguous block of memory, where each element is a name-value
 181        pair, and elements are separated from their neighbors by null
 182        characters.
 183
 184        This option group includes the following functions:
 185
 186         envz_add        envz_merge
 187         envz_entry      envz_remove
 188         envz_get        envz_strip
 189
 190 config EGLIBC_OPTION_EGLIBC_FSTAB
 191    bool "Access functions for 'fstab'"
 192    default y
 193    help
 194        This option group includes functions for reading the mount
 195        point specification table, '/etc/fstab'.  These functions are
 196        not included in the POSIX standard, which provides the
 197        'getmntent' family of functions instead.
 198
 199        This option group includues the following functions:
 200
 201          endfsent       getfsspec
 202          getfsent       setfsent
 203          getfsfile
 204
 205 config EGLIBC_OPTION_EGLIBC_GETLOGIN
 206    bool "The getlogin function"
 207    default y
 208    depends EGLIBC_OPTION_EGLIBC_UTMP
 209    help
 210        This function group includes the 'getlogin' and 'getlogin_r'
 211        functions, which return the user name associated by the login
 212        activity with the current process's controlling terminal.
 213
 214        With this option group disabled, the 'glob' function will not
 215        fall back on 'getlogin' to find the user's login name for tilde
 216        expansion when the 'HOME' environment variable is not set.
 217
 218 config EGLIBC_OPTION_EGLIBC_INET
 219    bool "Networking support"
 220    default y
 221    help
 222        This option group includes networking-specific functions and
 223        data.  With EGLIBC_INET disabled, the EGLIBC
 224        installation and API changes as follows:
 225
 226        - The following libraries are not installed:
 227
 228          libanl
 229          libnsl
 230          libnss_compat
 231          libnss_dns
 232          libnss_hesiod
 233          libnss_nis
 234          libnss_nisplus
 235          libresolv
 236
 237        - The following functions and variables are omitted from libc:
 238
 239          authdes_create           hstrerror              svc_fdset
 240          authdes_getucred         htonl                  svc_getreq
 241          authdes_pk_create        htons                  svc_getreq_common
 242          authnone_create          if_freenameindex       svc_getreq_poll
 243          authunix_create          if_indextoname         svc_getreqset
 244          authunix_create_default  if_nameindex           svc_max_pollfd
 245          bindresvport             if_nametoindex         svc_pollfd
 246          callrpc                  in6addr_any            svcraw_create
 247          cbc_crypt                in6addr_loopback       svc_register
 248          clnt_broadcast           inet6_opt_append       svc_run
 249          clnt_create              inet6_opt_find         svc_sendreply
 250          clnt_pcreateerror        inet6_opt_finish       svctcp_create
 251          clnt_perrno              inet6_opt_get_val      svcudp_bufcreate
 252          clnt_perror              inet6_opt_init         svcudp_create
 253          clntraw_create           inet6_alloc     svcudp_enablecache
 254          clnt_spcreateerror       inet6_append    svcunix_create
 255          clnt_sperrno             inet6_find      svcunixfd_create
 256          clnt_sperror             inet6_init      svc_unregister
 257          clnttcp_create           inet6_next      user2netname
 258          clntudp_bufcreate        inet6_space     xdecrypt
 259          clntudp_create           inet6_opt_next         xdr_accepted_reply
 260          clntunix_create          inet6_opt_set_val      xdr_array
 261          des_setparity            inet6_rth_add          xdr_authdes_cred
 262          ecb_crypt                inet6_rth_getaddr      xdr_authdes_verf
 263          endaliasent              inet6_rth_init         xdr_authunix_parms
 264          endhostent               inet6_rth_reverse      xdr_bool
 265          endnetent                inet6_rth_segments     xdr_bytes
 266          endnetgrent              inet6_rth_space        xdr_callhdr
 267          endprotoent              inet_addr              xdr_callmsg
 268          endrpcent                inet_aton              xdr_char
 269          endservent               inet_lnaof             xdr_cryptkeyarg
 270          ether_aton               inet_makeaddr          xdr_cryptkeyarg2
 271          ether_aton_r             inet_netof             xdr_cryptkeyres
 272          ether_hostton            inet_network           xdr_des_block
 273          ether_line               inet_nsap_addr         xdr_double
 274          ether_ntoa               inet_nsap_ntoa         xdr_enum
 275          ether_ntoa_r             inet_ntoa              xdr_float
 276          ether_ntohost            inet_ntop              xdr_free
 277          freeaddrinfo             inet_pton              xdr_getcredres
 278          freeifaddrs              innetgr                xdr_hyper
 279          gai_strerror             iruserok               xdr_int
 280          getaddrinfo              iruserok_af            xdr_int16_t
 281          getaliasbyname           key_decryptsession     xdr_int32_t
 282          getaliasbyname_r         key_decryptsession_pk  xdr_int64_t
 283          getaliasent              key_encryptsession     xdr_int8_t
 284          getaliasent_r            key_encryptsession_pk  xdr_keybuf
 285          gethostbyaddr            key_gendes             xdr_key_netstarg
 286          gethostbyaddr_r          key_get_conv           xdr_key_netstres
 287          gethostbyname            key_secretkey_is_set   xdr_keystatus
 288          gethostbyname2           key_setnet             xdr_long
 289          gethostbyname2_r         key_setsecret          xdr_longlong_t
 290          gethostbyname_r          netname2host           xdrmem_create
 291          gethostent               netname2user           xdr_netnamestr
 292          gethostent_r             ntohl                  xdr_netobj
 293          getifaddrs               ntohs                  xdr_opaque
 294          getipv4sourcefilter      passwd2des             xdr_opaque_auth
 295          get_myaddress            pmap_getmaps           xdr_pmap
 296          getnameinfo              pmap_getport           xdr_pmaplist
 297          getnetbyaddr             pmap_rmtcall           xdr_pointer
 298          getnetbyaddr_r           pmap_set               xdr_quad_t
 299          getnetbyname             pmap_unset             xdrrec_create
 300          getnetbyname_r           rcmd                   xdrrec_endofrecord
 301          getnetent                rcmd_af                xdrrec_eof
 302          getnetent_r              registerrpc            xdrrec_skiprecord
 303          getnetgrent              res_init               xdr_reference
 304          getnetgrent_r            rexec                  xdr_rejected_reply
 305          getnetname               rexec_af               xdr_replymsg
 306          getprotobyname           rexecoptions           xdr_rmtcall_args
 307          getprotobyname_r         rpc_createerr          xdr_rmtcallres
 308          getprotobynumber         rresvport              xdr_short
 309          getprotobynumber_r       rresvport_af           xdr_sizeof
 310          getprotoent              rtime                  xdrstdio_create
 311          getprotoent_r            ruserok                xdr_string
 312          getpublickey             ruserok_af             xdr_u_char
 313          getrpcbyname             ruserpass              xdr_u_hyper
 314          getrpcbyname_r           setaliasent            xdr_u_int
 315          getrpcbynumber           sethostent             xdr_uint16_t
 316          getrpcbynumber_r         setipv4sourcefilter    xdr_uint32_t
 317          getrpcent                setnetent              xdr_uint64_t
 318          getrpcent_r              setnetgrent            xdr_uint8_t
 319          getrpcport               setprotoent            xdr_u_long
 320          getsecretkey             setrpcent              xdr_u_longlong_t
 321          getservbyname            setservent             xdr_union
 322          getservbyname_r          setsourcefilter        xdr_unixcred
 323          getservbyport            svcauthdes_stats       xdr_u_quad_t
 324          getservbyport_r          svcerr_auth            xdr_u_short
 325          getservent               svcerr_decode          xdr_vector
 326          getservent_r             svcerr_noproc          xdr_void
 327          getsourcefilter          svcerr_noprog          xdr_wrapstring
 328          h_errlist                svcerr_progvers        xencrypt
 329          h_errno                  svcerr_systemerr       xprt_register
 330          herror                   svcerr_weakauth        xprt_unregister
 331          h_nerr                   svc_exit
 332          host2netname             svcfd_create
 333
 334        - The rpcgen, nscd, and rpcinfo commands are not installed.
 335
 336        - The 'rpc' file (a text file listing RPC services) is not installed.
 337
 338        Socket-related system calls do not fall in this option group,
 339        because many are also used for other inter-process
 340        communication mechanisms.  For example, the 'syslog' routines
 341        use Unix-domain sockets to communicate with the syslog daemon;
 342        syslog is valuable in non-networked contexts.
 343
 344 config EGLIBC_OPTION_EGLIBC_LIBM
 345    bool "libm (math library)"
 346    default y
 347    help
 348        This option group includes the 'libm' library, containing
 349        mathematical functions.  If this option group is omitted, then
 350        an EGLIBC installation does not include shared or unshared versions
 351        of the math library.
 352
 353        Note that this does not remove all floating-point related
 354        functionality from EGLIBC; for example, 'printf' and 'scanf'
 355        can still print and read floating-point values with this option
 356        group disabled.
 357
 358        Note that the ISO Standard C++ library 'libstdc++' depends on
 359        EGLIBC's math library 'libm'.  If you disable this option
 360        group, you will not be able to build 'libstdc++' against the
 361        resulting EGLIBC installation.
 362
 363 config EGLIBC_OPTION_EGLIBC_LOCALES
 364    bool "Locale definitions"
 365    default y
 366    help
 367        This option group includes all locale definitions other than
 368        that for the "C" locale.  If this option group is omitted, then
 369        only the "C" locale is supported.
 370
 371
 372 config EGLIBC_OPTION_EGLIBC_LOCALE_CODE
 373    bool "Locale functions"
 374    default y
 375    depends EGLIBC_OPTION_POSIX_C_LANG_WIDE_CHAR
 376    help
 377        This option group includes locale support functions, programs,
 378        and libraries.  With EGLIBC_LOCALE_FUNCTIONS disabled,
 379        EGLIBC supports only the 'C' locale (also known as 'POSIX'),
 380        and ignores the settings of the 'LANG' and 'LC_*' environment
 381        variables.
 382
 383        With EGLIBC_LOCALE_CODE disabled, the following
 384        functions are omitted from libc:
 385
 386          duplocale   localeconv  nl_langinfo    rpmatch  strfmon_l
 387          freelocale  newlocale   nl_langinfo_l  strfmon  uselocale
 388
 389        Furthermore, only the LC_CTYPE and LC_TIME categories of the
 390        standard "C" locale are available.
 391
 392        The EGLIBC_CATGETS option group depends on this option
 393        group; if you disable EGLIBC_LOCALE_CODE, you must also
 394        disable EGLIBC_CATGETS.
 395
 396 config EGLIBC_OPTION_EGLIBC_NIS
 397    bool "Support for NIS, NIS+, and the special 'compat' services."
 398    default y
 399    depends EGLIBC_OPTION_EGLIBC_INET
 400    depends EGLIBC_OPTION_EGLIBC_SUNRPC
 401    help
 402        This option group includes the NIS, NIS+, and 'compat' Name
 403        Service Switch service libraries.  When it is disabled, those
 404        services libraries are not installed; you should remove any
 405        references to them from your 'nsswitch.conf' file.
 406
 407        This option group depends on the EGLIBC_INET option
 408        group; you must enable that to enable this option group.
 409
 410 config EGLIBC_OPTION_EGLIBC_NSSWITCH
 411    bool "Name service switch (nsswitch) support"
 412    default y
 413    help
 414
 415        This option group includes support for the 'nsswitch' facility.
 416        With this option group enabled, all EGLIBC functions for
 417        accessing various system databases (passwords and groups;
 418        networking; aliases; public keys; and so on) consult the
 419        '/etc/nsswitch.conf' configuration file to decide how to handle
 420        queries.
 421
 422        With this option group disabled, EGLIBC uses a fixed list of
 423        services to satisfy queries on each database, as requested by
 424        configuration files specified when EGLIBC is built.  Your
 425        'option-groups.config' file must set the following two
 426        variables:
 427
 428        EGLIBC_NSSWITCH_FIXED_CONFIG
 429
 430           Set this to the name of a file whose contents observe the
 431           same syntax as an ordinary '/etc/nsswitch.conf' file.  The
 432           EGLIBC build process parses this file just as EGLIBC would
 433           at run time if EGLIBC_NSSWITCH were enabled, and
 434           produces a C library that uses the nsswitch service
 435           libraries to search for database entries as this file
 436           specifies, instead of consulting '/etc/nsswitch.conf' at run
 437           time.
 438
 439           This should be an absolute filename.  The EGLIBC build
 440           process may use it from several different working
 441           directories.  It may include references to Makefile
 442           variables like 'common-objpfx' (the top of the build tree,
 443           with a trailing slash), or '..' (the top of the source tree,
 444           with a trailing slash).
 445
 446           The EGLIBC source tree includes a sample configuration file
 447           named 'nss/fixed-nsswitch.conf'; for simple configurations,
 448           you will probably want to delete references to databases not
 449           needed on your system.
 450
 451        EGLIBC_NSSWITCH_FIXED_FUNCTIONS
 452
 453           The EGLIBC build process uses this file to decide which
 454           functions to make available from which service libraries.
 455           The file 'nss/fixed-nsswitch.functions' serves as a sample
 456           configuration file for this setting, and explains its syntax
 457           and meaning in more detail.
 458
 459           This should be an absolute file name.  The EGLIBC build
 460           process may use it from several different working
 461           directories.  It may include references to Makefile
 462           variables like 'common-objpfx' (the top of the build tree,
 463           with a trailing slash), or '..' (the top of the source tree,
 464           with a trailing slash).
 465
 466           Be sure to mention each function in each service you wish to
 467           use.  If you do not mention a service's function here, the
 468           EGLIBC database access functions will not find it, even if
 469           it is listed in the EGLIBC_NSSWITCH_FIXED_CONFIG
 470           file.
 471
 472        In this arrangement, EGLIBC will not use the 'dlopen' and
 473        'dlsym' functions to find database access functions.  Instead,
 474        libc hard-codes references to the service libraries' database
 475        access functions.  You must explicitly link your program
 476        against the name service libraries (those whose names start
 477        with 'libnss_', in the sysroot's '/lib' directory) whose
 478        functions you intend to use.  This arrangement helps
 479        system-wide static analysis tools decide which functions a
 480        system actually uses.
 481
 482        Note that some nsswitch service libraries require other option
 483        groups to be enabled; for example, the EGLIBC_INET
 484        option group must be enabled to use the 'libnss_dns.so.2'
 485        service library, which uses the Domain Name System network
 486        protocol to answer queries.
 487
 488 config EGLIBC_OPTION_EGLIBC_RCMD
 489    bool "Support for 'rcmd' and related library functions"
 490    default y
 491    depends EGLIBC_OPTION_EGLIBC_INET
 492    help
 493       This option group includes functions for running commands on
 494       remote machines via the 'rsh' protocol, and doing authentication
 495       related to those functions.  This also includes functions that
 496       use the 'rexec' protocol.
 497
 498       This option group includes the following functions:
 499
 500         rcmd            ruserok
 501         rcmd_af         ruserok_af
 502         rexec           iruserok
 503         rexec_af        iruserok_af
 504         rresvport       ruserpass
 505         rresvport_af
 506
 507 config EGLIBC_OPTION_EGLIBC_SPAWN
 508    bool "Support for POSIX posix_spawn functions"
 509    default y
 510    help
 511       This option group includes the POSIX functions for executing
 512       programs in child processes without using 'fork' or 'vfork'.
 513
 514       This option group includes the following functions:
 515
 516         posix_spawn
 517         posix_spawnattr_destroy
 518         posix_spawnattr_getflags
 519         posix_spawnattr_getpgroup
 520         posix_spawnattr_getschedparam
 521         posix_spawnattr_getschedpolicy
 522         posix_spawnattr_getsigdefault
 523         posix_spawnattr_getsigmask
 524         posix_spawnattr_init
 525         posix_spawnattr_setflags
 526         posix_spawnattr_setpgroup
 527         posix_spawnattr_setschedparam
 528         posix_spawnattr_setschedpolicy
 529         posix_spawnattr_setsigdefault
 530         posix_spawnattr_setsigmask
 531         posix_spawn_file_actions_addclose
 532         posix_spawn_file_actions_adddup2
 533         posix_spawn_file_actions_addopen
 534         posix_spawn_file_actions_destroy
 535         posix_spawn_file_actions_init
 536         posix_spawnp
 537
 538       This option group also provides the ability for the iconv,
 539       localedef, and locale programs to operate transparently on
 540       compressed charset definitions.  When this option group is
 541       disabled, those programs will only operate on uncompressed
 542       charmap files.
 543
 544 config EGLIBC_OPTION_EGLIBC_STREAMS
 545    bool "Support for accessing STREAMS."
 546    default y
 547    help
 548       This option group includes functions for reading and writing
 549       messages to and from STREAMS.  The STREAMS interface provides a
 550       uniform mechanism for implementing networking services and other
 551       character-based I/O.  (STREAMS are not to be confused with
 552       <stdio.h> FILE objects, also called 'streams'.)
 553
 554       This option group includes the following functions:
 555
 556         getmsg          putpmsg
 557         getpmsg         fattach
 558         isastream       fdetach
 559         putmsg
 560
 561 config EGLIBC_OPTION_EGLIBC_SUNRPC
 562    bool "Support for the Sun 'RPC' protocol."
 563    default y
 564    depends EGLIBC_OPTION_EGLIBC_INET
 565    help
 566       This option group includes support for the Sun RPC protocols,
 567       including the 'rpcgen' and 'rpcinfo' programs.
 568
 569 config EGLIBC_OPTION_EGLIBC_UTMP
 570    bool "Older access functions for 'utmp' login records"
 571    default y
 572    help
 573        This option group includes the older 'utent' family of
 574        functions for accessing user login records in the 'utmp' file.
 575        POSIX omits these functions in favor of the 'utxent' family,
 576        and they are obsolete on systems other than Linux.
 577
 578        This option group includes the following functions:
 579
 580          endutent
 581          getutent
 582          getutent_r
 583          getutid
 584          getutid_r
 585          getutline
 586          getutline_r
 587          logwtmp
 588          pututline
 589          setutent
 590          updwtmp
 591          utmpname
 592
 593        This option group includes the following libraries:
 594
 595          libutil.so (and libutil.a)
 596
 597 config EGLIBC_OPTION_EGLIBC_UTMPX
 598    bool "POSIX access functions for 'utmp' login records"
 599    default y
 600    depends EGLIBC_OPTION_EGLIBC_UTMP
 601    help
 602        This option group includes the POSIX functions for reading and
 603        writing user login records in the 'utmp' file (usually
 604        '/var/run/utmp').  The POSIX functions operate on 'struct
 605        utmpx' structures, as opposed to the family of older 'utent'
 606        functions, which operate on 'struct utmp' structures.
 607
 608        This option group includes the following functions:
 609
 610          endutxent
 611          getutmp
 612          getutmpx
 613          getutxent
 614          getutxid
 615          getutxline
 616          pututxline
 617          setutxent
 618          updwtmpx
 619          utmpxname
 620
 621 config EGLIBC_OPTION_EGLIBC_WORDEXP
 622    bool "Shell-style word expansion"
 623    default y
 624    help
 625         This option group includes the 'wordexp' function for
 626         performing word expansion in the manner of the shell, and the
 627         accompanying 'wordfree' function.
 628
 629 config EGLIBC_OPTION_POSIX_C_LANG_WIDE_CHAR
 630    bool "ISO C library wide character functions, excluding I/O"
 631    default y
 632    help
 633         This option group includes the functions defined by the ISO C
 634         standard for working with wide and multibyte characters in
 635         memory.  Functions for reading and writing wide and multibyte
 636         characters from and to files call in the
 637         POSIX_WIDE_CHAR_DEVICE_IO option group.
 638
 639         This option group includes the following functions:
 640
 641           btowc         mbsinit       wcscspn       wcstoll
 642           iswalnum      mbsrtowcs     wcsftime      wcstombs
 643           iswalpha      mbstowcs      wcslen        wcstoul
 644           iswblank      mbtowc        wcsncat       wcstoull
 645           iswcntrl      swprintf      wcsncmp       wcstoumax
 646           iswctype      swscanf       wcsncpy       wcsxfrm
 647           iswdigit      towctrans     wcspbrk       wctob
 648           iswgraph      towlower      wcsrchr       wctomb
 649           iswlower      towupper      wcsrtombs     wctrans
 650           iswprint      vswprintf     wcsspn        wctype
 651           iswpunct      vswscanf      wcsstr        wmemchr
 652           iswspace      wcrtomb       wcstod        wmemcmp
 653           iswupper      wcscat        wcstof        wmemcpy
 654           iswxdigit     wcschr        wcstoimax     wmemmove
 655           mblen         wcscmp        wcstok        wmemset
 656           mbrlen        wcscoll       wcstol
 657           mbrtowc       wcscpy        wcstold
 658
 659 config EGLIBC_OPTION_POSIX_REGEXP
 660    bool "Regular expressions"
 661    default y
 662    help
 663         This option group includes the POSIX regular expression
 664         functions, and the associated non-POSIX extensions and
 665         compatibility functions.
 666
 667         With POSIX_REGEXP disabled, the following functions are
 668         omitted from libc:
 669
 670           re_comp                 re_max_failures         regcomp
 671           re_compile_fastmap      re_search               regerror
 672           re_compile_pattern      re_search_2             regexec
 673           re_exec                 re_set_registers        regfree
 674           re_match                re_set_syntax           rpmatch
 675           re_match_2              re_syntax_options
 676
 677         Furthermore, the compatibility regexp interface defined in the
 678         <regexp.h> header file, 'compile', 'step', and 'advance', is
 679         omitted.
 680
 681 config EGLIBC_OPTION_POSIX_WIDE_CHAR_DEVICE_IO
 682    bool "Input and output functions for wide characters"
 683    default y
 684    depends EGLIBC_OPTION_POSIX_C_LANG_WIDE_CHAR
 685    help
 686         This option group includes functions for reading and writing
 687         wide characters to and from <stdio.h> streams.
 688
 689         This option group includes the following functions:
 690
 691           fgetwc        fwprintf      putwchar      vwscanf
 692           fgetws        fwscanf       ungetwc       wprintf
 693           fputwc        getwc         vfwprintf     wscanf
 694           fputws        getwchar      vfwscanf
 695           fwide         putwc         vwprintf
 696
 697         This option group further includes the following unlocked
 698         variants of the above functions:
 699
 700           fgetwc_unlocked           getwc_unlocked
 701           fgetws_unlocked           getwchar_unlocked
 702           fputwc_unlocked           putwc_unlocked
 703           fputws_unlocked           putwchar_unlocked
 704
 705         Note that the GNU standard C++ library, 'libstdc++.so', uses
 706         some of these functions; you will not be able to link or run
 707         C++ programs if you disable this option group.
 708
 709         This option group also affects the behavior of the following
 710         functions:
 711
 712           fdopen
 713           fopen
 714           fopen64
 715           freopen
 716           freopen64
 717
 718         These functions all take an OPENTYPE parameter which may
 719         contain a string of the form ",ccs=CHARSET", indicating that
 720         the underlying file uses the character set named CHARSET.
 721         This produces a wide-oriented stream, which is only useful
 722         when the functions included in this option group are present.
 723         If the user attempts to open a file specifying a character set
 724         in the OPENTYPE parameter, and EGLIBC was built with this
 725         option group disabled, the function returns NULL, and sets
 726         errno to EINVAL.