source: trunk/toolchain/eglibc/config/Config.in @ 17751

Last change on this file since 17751 was 17751, checked in by nico, 7 years ago

[toolchain] eglibc: use 'select' instead of 'depends' for configuration options, add dependencies for features avalaible in 2.8 or later

File size: 30.6 KB
Line 
1config EGLIBC_OPTION_EGLIBC_ADVANCED_INET6
2   bool "IPv6 Advanced Sockets API support (RFC3542)"
3   default y
4   select 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
32config 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
47config 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
64config EGLIBC_OPTION_EGLIBC_CXX_TESTS
65   bool "Tests that link against the standard C++ library."
66   default y
67   select EGLIBC_OPTION_POSIX_WIDE_CHAR_DEVICE_IO
68   select 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
80config EGLIBC_OPTION_EGLIBC_CATGETS
81   bool "Functions for accessing message catalogs"
82   default y
83   select 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
91config 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
156config 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
174config 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
190config EGLIBC_OPTION_EGLIBC_FCVT
191   bool "Functions for converting floating-point numbers to strings"
192   default y
193   depends EGLIBC_VERSION_2_10
194   help
195       This option group includes functions for converting
196       floating-point numbers to strings.
197
198       This option group includes the following functions:
199
200         ecvt           qecvt
201         ecvt_r         qecvt_r
202         fcvt           qfcvt
203         fcvt_r         qfcvt_r
204         gcvt           qgcvt
205
206config EGLIBC_OPTION_EGLIBC_FMTMSG
207   bool "Functions for formatting messages"
208   default y
209   depends EGLIBC_VERSION_2_10
210   help
211       This option group includes the following functions:
212
213         addseverity    fmtmsg
214
215config EGLIBC_OPTION_EGLIBC_FSTAB
216   bool "Access functions for 'fstab'"
217   default y
218   help
219       This option group includes functions for reading the mount
220       point specification table, '/etc/fstab'.  These functions are
221       not included in the POSIX standard, which provides the
222       'getmntent' family of functions instead.
223
224       This option group includes the following functions:
225
226         endfsent       getfsspec
227         getfsent       setfsent
228         getfsfile
229
230config OPTION_EGLIBC_FTRAVERSE
231   bool "Functions for traversing file hierarchies"
232   default y
233   depends EGLIBC_VERSION_2_10
234   help
235       This option group includes functions for traversing file
236       UNIX file hierachies.
237
238       This option group includes the following functions:
239
240         fts_open       ftw
241         fts_read       nftw
242         fts_children   ftw64
243         fts_set        nftw64
244         fts_close
245
246config EGLIBC_OPTION_EGLIBC_GETLOGIN
247   bool "The getlogin function"
248   default y
249   select EGLIBC_OPTION_EGLIBC_UTMP
250   help
251       This function group includes the 'getlogin' and 'getlogin_r'
252       functions, which return the user name associated by the login
253       activity with the current process's controlling terminal.
254
255       With this option group disabled, the 'glob' function will not
256       fall back on 'getlogin' to find the user's login name for tilde
257       expansion when the 'HOME' environment variable is not set.
258
259config EGLIBC_OPTION_EGLIBC_INET
260   bool "Networking support"
261   default y
262   help
263       This option group includes networking-specific functions and
264       data.  With EGLIBC_INET disabled, the EGLIBC
265       installation and API changes as follows:
266
267       - The following libraries are not installed:
268
269         libanl
270         libnsl
271         libnss_compat
272         libnss_dns
273         libnss_hesiod
274         libnss_nis
275         libnss_nisplus
276         libresolv
277         
278       - The following functions and variables are omitted from libc:
279
280         authdes_create           hstrerror              svc_fdset
281         authdes_getucred         htonl                  svc_getreq
282         authdes_pk_create        htons                  svc_getreq_common
283         authnone_create          if_freenameindex       svc_getreq_poll
284         authunix_create          if_indextoname         svc_getreqset
285         authunix_create_default  if_nameindex           svc_max_pollfd
286         bindresvport             if_nametoindex         svc_pollfd
287         callrpc                  in6addr_any            svcraw_create
288         cbc_crypt                in6addr_loopback       svc_register
289         clnt_broadcast           inet6_opt_append       svc_run
290         clnt_create              inet6_opt_find         svc_sendreply
291         clnt_pcreateerror        inet6_opt_finish       svctcp_create
292         clnt_perrno              inet6_opt_get_val      svcudp_bufcreate
293         clnt_perror              inet6_opt_init         svcudp_create
294         clntraw_create           inet6_alloc     svcudp_enablecache
295         clnt_spcreateerror       inet6_append    svcunix_create
296         clnt_sperrno             inet6_find      svcunixfd_create
297         clnt_sperror             inet6_init      svc_unregister
298         clnttcp_create           inet6_next      user2netname
299         clntudp_bufcreate        inet6_space     xdecrypt
300         clntudp_create           inet6_opt_next         xdr_accepted_reply
301         clntunix_create          inet6_opt_set_val      xdr_array
302         des_setparity            inet6_rth_add          xdr_authdes_cred
303         ecb_crypt                inet6_rth_getaddr      xdr_authdes_verf
304         endaliasent              inet6_rth_init         xdr_authunix_parms
305         endhostent               inet6_rth_reverse      xdr_bool
306         endnetent                inet6_rth_segments     xdr_bytes
307         endnetgrent              inet6_rth_space        xdr_callhdr
308         endprotoent              inet_addr              xdr_callmsg
309         endrpcent                inet_aton              xdr_char
310         endservent               inet_lnaof             xdr_cryptkeyarg
311         ether_aton               inet_makeaddr          xdr_cryptkeyarg2
312         ether_aton_r             inet_netof             xdr_cryptkeyres
313         ether_hostton            inet_network           xdr_des_block
314         ether_line               inet_nsap_addr         xdr_double
315         ether_ntoa               inet_nsap_ntoa         xdr_enum
316         ether_ntoa_r             inet_ntoa              xdr_float
317         ether_ntohost            inet_ntop              xdr_free
318         freeaddrinfo             inet_pton              xdr_getcredres
319         freeifaddrs              innetgr                xdr_hyper
320         gai_strerror             iruserok               xdr_int
321         getaddrinfo              iruserok_af            xdr_int16_t
322         getaliasbyname           key_decryptsession     xdr_int32_t
323         getaliasbyname_r         key_decryptsession_pk  xdr_int64_t
324         getaliasent              key_encryptsession     xdr_int8_t
325         getaliasent_r            key_encryptsession_pk  xdr_keybuf
326         gethostbyaddr            key_gendes             xdr_key_netstarg
327         gethostbyaddr_r          key_get_conv           xdr_key_netstres
328         gethostbyname            key_secretkey_is_set   xdr_keystatus
329         gethostbyname2           key_setnet             xdr_long
330         gethostbyname2_r         key_setsecret          xdr_longlong_t
331         gethostbyname_r          netname2host           xdrmem_create
332         gethostent               netname2user           xdr_netnamestr
333         gethostent_r             ntohl                  xdr_netobj
334         getifaddrs               ntohs                  xdr_opaque
335         getipv4sourcefilter      passwd2des             xdr_opaque_auth
336         get_myaddress            pmap_getmaps           xdr_pmap
337         getnameinfo              pmap_getport           xdr_pmaplist
338         getnetbyaddr             pmap_rmtcall           xdr_pointer
339         getnetbyaddr_r           pmap_set               xdr_quad_t
340         getnetbyname             pmap_unset             xdrrec_create
341         getnetbyname_r           rcmd                   xdrrec_endofrecord
342         getnetent                rcmd_af                xdrrec_eof
343         getnetent_r              registerrpc            xdrrec_skiprecord
344         getnetgrent              res_init               xdr_reference
345         getnetgrent_r            rexec                  xdr_rejected_reply
346         getnetname               rexec_af               xdr_replymsg
347         getprotobyname           rexecoptions           xdr_rmtcall_args
348         getprotobyname_r         rpc_createerr          xdr_rmtcallres
349         getprotobynumber         rresvport              xdr_short
350         getprotobynumber_r       rresvport_af           xdr_sizeof
351         getprotoent              rtime                  xdrstdio_create
352         getprotoent_r            ruserok                xdr_string
353         getpublickey             ruserok_af             xdr_u_char
354         getrpcbyname             ruserpass              xdr_u_hyper
355         getrpcbyname_r           setaliasent            xdr_u_int
356         getrpcbynumber           sethostent             xdr_uint16_t
357         getrpcbynumber_r         setipv4sourcefilter    xdr_uint32_t
358         getrpcent                setnetent              xdr_uint64_t
359         getrpcent_r              setnetgrent            xdr_uint8_t
360         getrpcport               setprotoent            xdr_u_long
361         getsecretkey             setrpcent              xdr_u_longlong_t
362         getservbyname            setservent             xdr_union
363         getservbyname_r          setsourcefilter        xdr_unixcred
364         getservbyport            svcauthdes_stats       xdr_u_quad_t
365         getservbyport_r          svcerr_auth            xdr_u_short
366         getservent               svcerr_decode          xdr_vector
367         getservent_r             svcerr_noproc          xdr_void
368         getsourcefilter          svcerr_noprog          xdr_wrapstring
369         h_errlist                svcerr_progvers        xencrypt
370         h_errno                  svcerr_systemerr       xprt_register
371         herror                   svcerr_weakauth        xprt_unregister
372         h_nerr                   svc_exit
373         host2netname             svcfd_create
374
375       - The rpcgen, nscd, and rpcinfo commands are not installed.
376
377       - The 'rpc' file (a text file listing RPC services) is not installed.
378
379       Socket-related system calls do not fall in this option group,
380       because many are also used for other inter-process
381       communication mechanisms.  For example, the 'syslog' routines
382       use Unix-domain sockets to communicate with the syslog daemon;
383       syslog is valuable in non-networked contexts.
384
385config EGLIBC_OPTION_EGLIBC_LIBM
386   bool "libm (math library)"
387   default y
388   help
389       This option group includes the 'libm' library, containing
390       mathematical functions.  If this option group is omitted, then
391       an EGLIBC installation does not include shared or unshared versions
392       of the math library.
393
394       Note that this does not remove all floating-point related
395       functionality from EGLIBC; for example, 'printf' and 'scanf'
396       can still print and read floating-point values with this option
397       group disabled.
398
399       Note that the ISO Standard C++ library 'libstdc++' depends on
400       EGLIBC's math library 'libm'.  If you disable this option
401       group, you will not be able to build 'libstdc++' against the
402       resulting EGLIBC installation.
403
404config EGLIBC_OPTION_EGLIBC_LOCALES
405   bool "Locale definitions"
406   default y
407   help
408       This option group includes all locale definitions other than
409       that for the "C" locale.  If this option group is omitted, then
410       only the "C" locale is supported.
411
412
413config EGLIBC_OPTION_EGLIBC_LOCALE_CODE
414   bool "Locale functions"
415   default y
416   select EGLIBC_OPTION_POSIX_C_LANG_WIDE_CHAR if EGLIBC_VERSION_2_8 || EGLIBC_VERSION_2_9 || EGLIBC_VERSION_2_10
417   help
418       This option group includes locale support functions, programs,
419       and libraries.  With EGLIBC_LOCALE_FUNCTIONS disabled,
420       EGLIBC supports only the 'C' locale (also known as 'POSIX'),
421       and ignores the settings of the 'LANG' and 'LC_*' environment
422       variables.
423
424       With EGLIBC_LOCALE_CODE disabled, the following
425       functions are omitted from libc:
426
427         duplocale   localeconv  nl_langinfo    rpmatch  strfmon_l
428         freelocale  newlocale   nl_langinfo_l  strfmon  uselocale
429
430       Furthermore, only the LC_CTYPE and LC_TIME categories of the
431       standard "C" locale are available.
432
433       The EGLIBC_CATGETS option group depends on this option
434       group; if you disable EGLIBC_LOCALE_CODE, you must also
435       disable EGLIBC_CATGETS.
436
437config EGLIBC_OPTION_EGLIBC_NIS
438   bool "Support for NIS, NIS+, and the special 'compat' services."
439   default y
440   select EGLIBC_OPTION_EGLIBC_INET
441   select EGLIBC_OPTION_EGLIBC_SUNRPC
442   help
443       This option group includes the NIS, NIS+, and 'compat' Name
444       Service Switch service libraries.  When it is disabled, those
445       services libraries are not installed; you should remove any
446       references to them from your 'nsswitch.conf' file.
447
448       This option group depends on the EGLIBC_INET option
449       group; you must enable that to enable this option group.
450
451config EGLIBC_OPTION_EGLIBC_NSSWITCH
452   bool "Name service switch (nsswitch) support"
453   default y
454   help
455
456       This option group includes support for the 'nsswitch' facility.
457       With this option group enabled, all EGLIBC functions for
458       accessing various system databases (passwords and groups;
459       networking; aliases; public keys; and so on) consult the
460       '/etc/nsswitch.conf' configuration file to decide how to handle
461       queries.
462
463       With this option group disabled, EGLIBC uses a fixed list of
464       services to satisfy queries on each database, as requested by
465       configuration files specified when EGLIBC is built.  Your
466       'option-groups.config' file must set the following two
467       variables:
468
469       EGLIBC_NSSWITCH_FIXED_CONFIG
470
471          Set this to the name of a file whose contents observe the
472          same syntax as an ordinary '/etc/nsswitch.conf' file.  The
473          EGLIBC build process parses this file just as EGLIBC would
474          at run time if EGLIBC_NSSWITCH were enabled, and
475          produces a C library that uses the nsswitch service
476          libraries to search for database entries as this file
477          specifies, instead of consulting '/etc/nsswitch.conf' at run
478          time.
479
480          This should be an absolute filename.  The EGLIBC build
481          process may use it from several different working
482          directories.  It may include references to Makefile
483          variables like 'common-objpfx' (the top of the build tree,
484          with a trailing slash), or '..' (the top of the source tree,
485          with a trailing slash).
486
487          The EGLIBC source tree includes a sample configuration file
488          named 'nss/fixed-nsswitch.conf'; for simple configurations,
489          you will probably want to delete references to databases not
490          needed on your system.
491
492       EGLIBC_NSSWITCH_FIXED_FUNCTIONS
493
494          The EGLIBC build process uses this file to decide which
495          functions to make available from which service libraries.
496          The file 'nss/fixed-nsswitch.functions' serves as a sample
497          configuration file for this setting, and explains its syntax
498          and meaning in more detail.
499
500          This should be an absolute file name.  The EGLIBC build
501          process may use it from several different working
502          directories.  It may include references to Makefile
503          variables like 'common-objpfx' (the top of the build tree,
504          with a trailing slash), or '..' (the top of the source tree,
505          with a trailing slash).
506
507          Be sure to mention each function in each service you wish to
508          use.  If you do not mention a service's function here, the
509          EGLIBC database access functions will not find it, even if
510          it is listed in the EGLIBC_NSSWITCH_FIXED_CONFIG
511          file.
512
513       In this arrangement, EGLIBC will not use the 'dlopen' and
514       'dlsym' functions to find database access functions.  Instead,
515       libc hard-codes references to the service libraries' database
516       access functions.  You must explicitly link your program
517       against the name service libraries (those whose names start
518       with 'libnss_', in the sysroot's '/lib' directory) whose
519       functions you intend to use.  This arrangement helps
520       system-wide static analysis tools decide which functions a
521       system actually uses.
522
523       Note that some nsswitch service libraries require other option
524       groups to be enabled; for example, the EGLIBC_INET
525       option group must be enabled to use the 'libnss_dns.so.2'
526       service library, which uses the Domain Name System network
527       protocol to answer queries.
528
529config EGLIBC_OPTION_EGLIBC_RCMD
530   bool "Support for 'rcmd' and related library functions"
531   default y
532   select EGLIBC_OPTION_EGLIBC_INET
533   help
534      This option group includes functions for running commands on
535      remote machines via the 'rsh' protocol, and doing authentication
536      related to those functions.  This also includes functions that
537      use the 'rexec' protocol.
538
539      This option group includes the following functions:
540
541        rcmd            ruserok
542        rcmd_af         ruserok_af
543        rexec           iruserok
544        rexec_af        iruserok_af
545        rresvport       ruserpass
546        rresvport_af
547       
548config EGLIBC_OPTION_EGLIBC_SPAWN
549   bool "Support for POSIX posix_spawn functions"
550   default y
551   help
552      This option group includes the POSIX functions for executing
553      programs in child processes without using 'fork' or 'vfork'.
554
555      This option group includes the following functions:
556
557        posix_spawn
558        posix_spawnattr_destroy
559        posix_spawnattr_getflags
560        posix_spawnattr_getpgroup
561        posix_spawnattr_getschedparam
562        posix_spawnattr_getschedpolicy
563        posix_spawnattr_getsigdefault
564        posix_spawnattr_getsigmask
565        posix_spawnattr_init
566        posix_spawnattr_setflags
567        posix_spawnattr_setpgroup
568        posix_spawnattr_setschedparam
569        posix_spawnattr_setschedpolicy
570        posix_spawnattr_setsigdefault
571        posix_spawnattr_setsigmask
572        posix_spawn_file_actions_addclose
573        posix_spawn_file_actions_adddup2
574        posix_spawn_file_actions_addopen
575        posix_spawn_file_actions_destroy
576        posix_spawn_file_actions_init
577        posix_spawnp
578
579      This option group also provides the ability for the iconv,
580      localedef, and locale programs to operate transparently on
581      compressed charset definitions.  When this option group is
582      disabled, those programs will only operate on uncompressed
583      charmap files.
584
585config EGLIBC_OPTION_EGLIBC_STREAMS
586   bool "Support for accessing STREAMS."
587   default y
588   help
589      This option group includes functions for reading and writing
590      messages to and from STREAMS.  The STREAMS interface provides a
591      uniform mechanism for implementing networking services and other
592      character-based I/O.  (STREAMS are not to be confused with
593      <stdio.h> FILE objects, also called 'streams'.)
594
595      This option group includes the following functions:
596
597        getmsg          putpmsg
598        getpmsg         fattach
599        isastream       fdetach
600        putmsg
601
602config EGLIBC_OPTION_EGLIBC_SUNRPC
603   bool "Support for the Sun 'RPC' protocol."
604   default y
605   select EGLIBC_OPTION_EGLIBC_INET
606   help
607      This option group includes support for the Sun RPC protocols,
608      including the 'rpcgen' and 'rpcinfo' programs.
609
610config EGLIBC_OPTION_EGLIBC_UTMP
611   bool "Older access functions for 'utmp' login records"
612   default y
613   help
614       This option group includes the older 'utent' family of
615       functions for accessing user login records in the 'utmp' file.
616       POSIX omits these functions in favor of the 'utxent' family,
617       and they are obsolete on systems other than Linux.
618
619       This option group includes the following functions:
620
621         endutent
622         getutent
623         getutent_r
624         getutid
625         getutid_r
626         getutline
627         getutline_r
628         logwtmp
629         pututline
630         setutent
631         updwtmp
632         utmpname
633
634       This option group includes the following libraries:
635
636         libutil.so (and libutil.a)
637
638config EGLIBC_OPTION_EGLIBC_UTMPX
639   bool "POSIX access functions for 'utmp' login records"
640   default y
641   select EGLIBC_OPTION_EGLIBC_UTMP   
642   help
643       This option group includes the POSIX functions for reading and
644       writing user login records in the 'utmp' file (usually
645       '/var/run/utmp').  The POSIX functions operate on 'struct
646       utmpx' structures, as opposed to the family of older 'utent'
647       functions, which operate on 'struct utmp' structures.
648
649       This option group includes the following functions:
650
651         endutxent
652         getutmp
653         getutmpx
654         getutxent
655         getutxid
656         getutxline
657         pututxline
658         setutxent
659         updwtmpx
660         utmpxname
661
662config EGLIBC_OPTION_EGLIBC_WORDEXP
663   bool "Shell-style word expansion"
664   default y
665   help
666        This option group includes the 'wordexp' function for
667        performing word expansion in the manner of the shell, and the
668        accompanying 'wordfree' function.
669
670config EGLIBC_OPTION_POSIX_C_LANG_WIDE_CHAR
671   bool "ISO C library wide character functions, excluding I/O"
672   default y
673   depends EGLIBC_VERSION_2_8 || EGLIBC_VERSION_2_9 || EGLIBC_VERSION_2_10
674   help
675        This option group includes the functions defined by the ISO C
676        standard for working with wide and multibyte characters in
677        memory.  Functions for reading and writing wide and multibyte
678        characters from and to files call in the
679        POSIX_WIDE_CHAR_DEVICE_IO option group.
680
681        This option group includes the following functions:
682
683          btowc         mbsinit       wcscspn       wcstoll
684          iswalnum      mbsrtowcs     wcsftime      wcstombs
685          iswalpha      mbstowcs      wcslen        wcstoul
686          iswblank      mbtowc        wcsncat       wcstoull
687          iswcntrl      swprintf      wcsncmp       wcstoumax
688          iswctype      swscanf       wcsncpy       wcsxfrm
689          iswdigit      towctrans     wcspbrk       wctob
690          iswgraph      towlower      wcsrchr       wctomb
691          iswlower      towupper      wcsrtombs     wctrans
692          iswprint      vswprintf     wcsspn        wctype
693          iswpunct      vswscanf      wcsstr        wmemchr
694          iswspace      wcrtomb       wcstod        wmemcmp
695          iswupper      wcscat        wcstof        wmemcpy
696          iswxdigit     wcschr        wcstoimax     wmemmove
697          mblen         wcscmp        wcstok        wmemset
698          mbrlen        wcscoll       wcstol
699          mbrtowc       wcscpy        wcstold
700
701config EGLIBC_OPTION_POSIX_REGEXP
702   bool "Regular expressions"
703   default y
704   help
705        This option group includes the POSIX regular expression
706        functions, and the associated non-POSIX extensions and
707        compatibility functions.
708
709        With POSIX_REGEXP disabled, the following functions are
710        omitted from libc:
711
712          re_comp                 re_max_failures         regcomp
713          re_compile_fastmap      re_search               regerror
714          re_compile_pattern      re_search_2             regexec
715          re_exec                 re_set_registers        regfree
716          re_match                re_set_syntax           rpmatch
717          re_match_2              re_syntax_options
718
719        Furthermore, the compatibility regexp interface defined in the
720        <regexp.h> header file, 'compile', 'step', and 'advance', is
721        omitted.
722
723config EGLIBC_OPTION_POSIX_REGEXP_GLIBC
724   bool "Regular expressions from GLIBC"
725   default y
726   select EGLIBC_OPTION_POSIX_REGEXP
727   depends EGLIBC_VERSION_2_10
728   help
729        This option group specifies which regular expression
730        library to use.  The choice is between regex
731        implementation from GLIBC and regex implementation from
732        libiberty.  The GLIBC variant is fully POSIX conformant and
733        optimized for speed; regex from libiberty is more than twice
734        as small while still is enough for most practical purposes.
735
736config EGLIBC_OPTION_POSIX_WIDE_CHAR_DEVICE_IO
737   bool "Input and output functions for wide characters"
738   default y
739   select EGLIBC_OPTION_POSIX_C_LANG_WIDE_CHAR if EGLIBC_VERSION_2_8 || EGLIBC_VERSION_2_9 || EGLIBC_VERSION_2_10
740   help
741        This option group includes functions for reading and writing
742        wide characters to and from <stdio.h> streams.
743
744        This option group includes the following functions:
745
746          fgetwc        fwprintf      putwchar      vwscanf
747          fgetws        fwscanf       ungetwc       wprintf
748          fputwc        getwc         vfwprintf     wscanf
749          fputws        getwchar      vfwscanf
750          fwide         putwc         vwprintf
751
752        This option group further includes the following unlocked
753        variants of the above functions:
754
755          fgetwc_unlocked           getwc_unlocked
756          fgetws_unlocked           getwchar_unlocked
757          fputwc_unlocked           putwc_unlocked
758          fputws_unlocked           putwchar_unlocked
759                   
760        Note that the GNU standard C++ library, 'libstdc++.so', uses
761        some of these functions; you will not be able to link or run
762        C++ programs if you disable this option group.
763
764        This option group also affects the behavior of the following
765        functions:
766
767          fdopen
768          fopen
769          fopen64
770          freopen
771          freopen64
772
773        These functions all take an OPENTYPE parameter which may
774        contain a string of the form ",ccs=CHARSET", indicating that
775        the underlying file uses the character set named CHARSET.
776        This produces a wide-oriented stream, which is only useful
777        when the functions included in this option group are present.
778        If the user attempts to open a file specifying a character set
779        in the OPENTYPE parameter, and EGLIBC was built with this
780        option group disabled, the function returns NULL, and sets
781        errno to EINVAL.
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