X-Git-Url: https://git.rohieb.name/openwrt.git/blobdiff_plain/57b9777668b6930626e27d1576f5ddf74239f598..8c1109a28dbb93dc858530d0efc81033ce9193f4:/toolchain/eglibc/config/Config.in diff --git a/toolchain/eglibc/config/Config.in b/toolchain/eglibc/config/Config.in index f67ae45ba..a1e2eb60c 100644 --- a/toolchain/eglibc/config/Config.in +++ b/toolchain/eglibc/config/Config.in @@ -1,726 +1,903 @@ config EGLIBC_OPTION_EGLIBC_ADVANCED_INET6 - bool "IPv6 Advanced Sockets API support (RFC3542)" - default y - depends EGLIBC_OPTION_EGLIBC_INET - help - This option group includes the functions specified by RFC 3542, - "Advanced Sockets Application Program Interface (API) for - IPv6". - - This option group includes the following functions: - - inet6_opt_append - inet6_opt_find - inet6_opt_finish - inet6_opt_get_val - inet6_opt_init - inet6_alloc - inet6_append - inet6_find - inet6_init - inet6_next - inet6_space - inet6_opt_next - inet6_opt_set_val - inet6_rth_add - inet6_rth_getaddr - inet6_rth_init - inet6_rth_reverse - inet6_rth_segments - inet6_rth_space + bool "IPv6 Advanced Sockets API support (RFC3542)" + default y + select EGLIBC_OPTION_EGLIBC_INET + help + This option group includes the functions specified by RFC 3542, + "Advanced Sockets Application Program Interface (API) for + IPv6". + + This option group includes the following functions: + + inet6_opt_append + inet6_opt_find + inet6_opt_finish + inet6_opt_get_val + inet6_opt_init + inet6_option_alloc + inet6_option_append + inet6_option_find + inet6_option_init + inet6_option_next + inet6_option_space + inet6_opt_next + inet6_opt_set_val + inet6_rth_add + inet6_rth_getaddr + inet6_rth_init + inet6_rth_reverse + inet6_rth_segments + inet6_rth_space + config EGLIBC_OPTION_EGLIBC_BACKTRACE - bool "Functions for producing backtraces" - default y - help - This option group includes functions for producing a list of - the function calls that are currently active in a thread, from - within the thread itself. These functions are often used - within signal handlers, to produce diagnostic output. + bool "Functions for producing backtraces" + default y + help + This option group includes functions for producing a list of + the function calls that are currently active in a thread, from + within the thread itself. These functions are often used + within signal handlers, to produce diagnostic output. + + This option group includes the following functions: + + backtrace + backtrace_symbols + backtrace_symbols_fd - This option group includes the following functions: - backtrace - backtrace_symbols - backtrace_symbols_fd +config EGLIBC_OPTION_EGLIBC_BIG_MACROS + bool "Use extensive inline code" + default y + help + This option group specifies whether certain pieces of code + should be inlined to achieve maximum speed. If this option + group is not selected, function calls will be used instead, + hence reducing the library footprint. + config EGLIBC_OPTION_EGLIBC_BSD - bool "BSD-specific functions, and their compatibility stubs" - default y - help - This option group includes functions specific to BSD kernels. - A number of these functions have stub versions that are also - included in libraries built for non-BSD systems for - compatibility. - - This option group includes the following functions: - - chflags - fchflags - lchmod - revoke - setlogin + bool "BSD-specific functions, and their compatibility stubs" + default y + help + This option group includes functions specific to BSD kernels. + A number of these functions have stub versions that are also + included in libraries built for non-BSD systems for + compatibility. + + This option group includes the following functions: + + chflags + fchflags + lchmod + revoke + setlogin + config EGLIBC_OPTION_EGLIBC_CXX_TESTS - bool "Tests that link against the standard C++ library." - default y - depends EGLIBC_OPTION_POSIX_WIDE_CHAR_DEVICE_IO - depends EGLIBC_OPTION_EGLIBC_LIBM - help - This option group does not include any C library functions; - instead, it controls which EGLIBC tests an ordinary 'make - tests' runs. With this group disabled, tests that would - normally link against the standard C++ library are not - run. - - The standard C++ library depends on the math library 'libm' and - the wide character I/O functions included in EGLIBC. If those - option groups are disabled, this test must also be disabled. + bool "Tests that link against the standard C++ library." + default y + select EGLIBC_OPTION_POSIX_WIDE_CHAR_DEVICE_IO + select EGLIBC_OPTION_EGLIBC_LIBM + help + This option group does not include any C library functions; + instead, it controls which EGLIBC tests an ordinary 'make + tests' runs. With this group disabled, tests that would + normally link against the standard C++ library are not + run. + + The standard C++ library depends on the math library 'libm' and + the wide character I/O functions included in EGLIBC. If those + option groups are disabled, this test must also be disabled. + config EGLIBC_OPTION_EGLIBC_CATGETS - bool "Functions for accessing message catalogs" - default y - depends EGLIBC_OPTION_EGLIBC_LOCALE_CODE - help - This option group includes functions for accessing message - catalogs: catopen, catclose, and catgets. + bool "Functions for accessing message catalogs" + default y + select EGLIBC_OPTION_EGLIBC_LOCALE_CODE + help + This option group includes functions for accessing message + catalogs: catopen, catclose, and catgets. + + This option group depends on the EGLIBC_OPTION_EGLIBC_LOCALE_CODE + option group; if you disable that, you must also disable this. - This option group depends on the EGLIBC_LOCALE_CODE - option group; if you disable that, you must also disable this. config EGLIBC_OPTION_EGLIBC_CHARSETS - bool "iconv/gconv character set conversion libraries" - default y - help - - This option group includes support for character sets other - than ASCII (ANSI_X3.4-1968) and Unicode and ISO-10646 in their - various encodings. This affects both the character sets - supported by the wide and multibyte character functions, and - those supported by the 'iconv' functions. - - With this option group disabled, EGLIBC supports only the - following character sets: - - ANSI_X3.4 - ASCII - ANSI_X3.4-1968 - ANSI_X3.4-1986 - ASCII - CP367 - CSASCII - IBM367 - ISO-IR-6 - ISO646-US - ISO_646.IRV:1991 - OSF00010020 - US - US-ASCII - - 10646-1:1993 - ISO 10646, in big-endian UCS4 form - 10646-1:1993/UCS4 - CSUCS4 - ISO-10646 - ISO-10646/UCS4 - OSF00010104 - OSF00010105 - OSF00010106 - UCS-4 - UCS-4BE - UCS4 - - UCS-4LE - ISO 10646, in little-endian UCS4 form - - ISO-10646/UTF-8 - ISO 10646, in UTF-8 form - ISO-10646/UTF8 - ISO-IR-193 - OSF05010001 - UTF-8 - UTF8 - - ISO-10646/UCS2 - ISO 10646, in target-endian UCS2 form - OSF00010100 - OSF00010101 - OSF00010102 - UCS-2 - UCS2 - - UCS-2BE - ISO 10646, in big-endian UCS2 form - UNICODEBIG - - UCS-2LE - ISO 10646, in little-endian UCS2 form - UNICODELITTLE - - WCHAR_T - EGLIBC's internal form (target-endian, - 32-bit ISO 10646) + bool "iconv/gconv character set conversion libraries" + default y + help + + This option group includes support for character sets other + than ASCII (ANSI_X3.4-1968) and Unicode and ISO-10646 in their + various encodings. This affects both the character sets + supported by the wide and multibyte character functions, and + those supported by the 'iconv' functions. + + With this option group disabled, EGLIBC supports only the + following character sets: + + ANSI_X3.4 - ASCII + ANSI_X3.4-1968 + ANSI_X3.4-1986 + ASCII + CP367 + CSASCII + IBM367 + ISO-IR-6 + ISO646-US + ISO_646.IRV:1991 + OSF00010020 + US + US-ASCII + + 10646-1:1993 - ISO 10646, in big-endian UCS4 form + 10646-1:1993/UCS4 + CSUCS4 + ISO-10646 + ISO-10646/UCS4 + OSF00010104 + OSF00010105 + OSF00010106 + UCS-4 + UCS-4BE + UCS4 + + UCS-4LE - ISO 10646, in little-endian UCS4 form + + ISO-10646/UTF-8 - ISO 10646, in UTF-8 form + ISO-10646/UTF8 + ISO-IR-193 + OSF05010001 + UTF-8 + UTF8 + + ISO-10646/UCS2 - ISO 10646, in target-endian UCS2 form + OSF00010100 + OSF00010101 + OSF00010102 + UCS-2 + UCS2 + + UCS-2BE - ISO 10646, in big-endian UCS2 form + UNICODEBIG + + UCS-2LE - ISO 10646, in little-endian UCS2 form + UNICODELITTLE + + WCHAR_T - EGLIBC's internal form (target-endian, + 32-bit ISO 10646) + + +config EGLIBC_OPTION_EGLIBC_CRYPT + bool "Encryption library" + default y + help + This option group includes the `libcrypt' library which + provides functions for one-way encryption. Supported + encryption algorithms include MD5, SHA-256, SHA-512 and DES. + + +config EGLIBC_OPTION_EGLIBC_CRYPT_UFC + bool "Ultra fast `crypt' implementation" + default y + select EGLIBC_OPTION_EGLIBC_CRYPT + help + This option group provides ultra fast DES-based implementation of + the `crypt' function. When this option group is disabled, + (a) the library will not provide the setkey[_r] and encrypt[_r] + functions and (b) the crypt[_r] function will return NULL and set the + errno to ENOSYS if /salt/ passed does not correspond to either MD5, + SHA-256 or SHA-512 algorithm. + config EGLIBC_OPTION_EGLIBC_DB_ALIASES - bool "Functions for accessing the mail aliases database" - default y - help - This option group includes functions for looking up mail - aliases in '/etc/aliases' or using nsswitch. It includes the - following functions: - - endaliasent - getaliasbyname - getaliasbyname_r - getaliasent - getaliasent_r - setaliasent - - When this option group is disabled, the NSS service libraries - also lack support for querying their mail alias tables. + bool "Functions for accessing the mail aliases database" + default y + help + This option group includes functions for looking up mail + aliases in '/etc/aliases' or using nsswitch. It includes the + following functions: + + endaliasent + getaliasbyname + getaliasbyname_r + getaliasent + getaliasent_r + setaliasent + + When this option group is disabled, the NSS service libraries + also lack support for querying their mail alias tables. + config EGLIBC_OPTION_EGLIBC_ENVZ - bool "Functions for handling envz-style environment vectors." - default y - help - This option group contains functions for creating and operating - on envz vectors. An "envz vector" is a vector of strings in a - contiguous block of memory, where each element is a name-value - pair, and elements are separated from their neighbors by null - characters. + bool "Functions for handling envz-style environment vectors." + default y + help + This option group contains functions for creating and operating + on envz vectors. An "envz vector" is a vector of strings in a + contiguous block of memory, where each element is a name-value + pair, and elements are separated from their neighbors by null + characters. + + This option group includes the following functions: + + envz_add envz_merge + envz_entry envz_remove + envz_get envz_strip + + +config EGLIBC_OPTION_EGLIBC_FCVT + bool "Functions for converting floating-point numbers to strings" + default y + help + This option group includes functions for converting + floating-point numbers to strings. + + This option group includes the following functions: - This option group includes the following functions: + ecvt qecvt + ecvt_r qecvt_r + fcvt qfcvt + fcvt_r qfcvt_r + gcvt qgcvt + + +config EGLIBC_OPTION_EGLIBC_FMTMSG + bool "Functions for formatting messages" + default y + help + This option group includes the following functions: + + addseverity fmtmsg - envz_add envz_merge - envz_entry envz_remove - envz_get envz_strip config EGLIBC_OPTION_EGLIBC_FSTAB - bool "Access functions for 'fstab'" - default y - help - This option group includes functions for reading the mount - point specification table, '/etc/fstab'. These functions are - not included in the POSIX standard, which provides the - 'getmntent' family of functions instead. + bool "Access functions for 'fstab'" + default y + help + This option group includes functions for reading the mount + point specification table, '/etc/fstab'. These functions are + not included in the POSIX standard, which provides the + 'getmntent' family of functions instead. + + This option group includes the following functions: + + endfsent getfsspec + getfsent setfsent + getfsfile + - This option group includes the following functions: +config EGLIBC_OPTION_EGLIBC_FTRAVERSE + bool "Functions for traversing file hierarchies" + default y + help + This option group includes functions for traversing file + UNIX file hierachies. + + This option group includes the following functions: + + fts_open ftw + fts_read nftw + fts_children ftw64 + fts_set nftw64 + fts_close - endfsent getfsspec - getfsent setfsent - getfsfile config EGLIBC_OPTION_EGLIBC_GETLOGIN - bool "The getlogin function" - default y - depends EGLIBC_OPTION_EGLIBC_UTMP - help - This function group includes the 'getlogin' and 'getlogin_r' - functions, which return the user name associated by the login - activity with the current process's controlling terminal. - - With this option group disabled, the 'glob' function will not - fall back on 'getlogin' to find the user's login name for tilde - expansion when the 'HOME' environment variable is not set. + bool "The getlogin function" + default y + select EGLIBC_OPTION_EGLIBC_UTMP + help + This function group includes the 'getlogin' and 'getlogin_r' + functions, which return the user name associated by the login + activity with the current process's controlling terminal. + + With this option group disabled, the 'glob' function will not + fall back on 'getlogin' to find the user's login name for tilde + expansion when the 'HOME' environment variable is not set. + + +config EGLIBC_OPTION_EGLIBC_IDN + bool "International domain names support" + default y + help + This option group includes the `libcidn' library which + provides support for international domain names. + config EGLIBC_OPTION_EGLIBC_INET - bool "Networking support" - default y - help - This option group includes networking-specific functions and - data. With EGLIBC_INET disabled, the EGLIBC - installation and API changes as follows: - - - The following libraries are not installed: - - libanl - libnsl - libnss_compat - libnss_dns - libnss_hesiod - libnss_nis - libnss_nisplus - libresolv - - - The following functions and variables are omitted from libc: - - authdes_create hstrerror svc_fdset - authdes_getucred htonl svc_getreq - authdes_pk_create htons svc_getreq_common - authnone_create if_freenameindex svc_getreq_poll - authunix_create if_indextoname svc_getreqset - authunix_create_default if_nameindex svc_max_pollfd - bindresvport if_nametoindex svc_pollfd - callrpc in6addr_any svcraw_create - cbc_crypt in6addr_loopback svc_register - clnt_broadcast inet6_opt_append svc_run - clnt_create inet6_opt_find svc_sendreply - clnt_pcreateerror inet6_opt_finish svctcp_create - clnt_perrno inet6_opt_get_val svcudp_bufcreate - clnt_perror inet6_opt_init svcudp_create - clntraw_create inet6_alloc svcudp_enablecache - clnt_spcreateerror inet6_append svcunix_create - clnt_sperrno inet6_find svcunixfd_create - clnt_sperror inet6_init svc_unregister - clnttcp_create inet6_next user2netname - clntudp_bufcreate inet6_space xdecrypt - clntudp_create inet6_opt_next xdr_accepted_reply - clntunix_create inet6_opt_set_val xdr_array - des_setparity inet6_rth_add xdr_authdes_cred - ecb_crypt inet6_rth_getaddr xdr_authdes_verf - endaliasent inet6_rth_init xdr_authunix_parms - endhostent inet6_rth_reverse xdr_bool - endnetent inet6_rth_segments xdr_bytes - endnetgrent inet6_rth_space xdr_callhdr - endprotoent inet_addr xdr_callmsg - endrpcent inet_aton xdr_char - endservent inet_lnaof xdr_cryptkeyarg - ether_aton inet_makeaddr xdr_cryptkeyarg2 - ether_aton_r inet_netof xdr_cryptkeyres - ether_hostton inet_network xdr_des_block - ether_line inet_nsap_addr xdr_double - ether_ntoa inet_nsap_ntoa xdr_enum - ether_ntoa_r inet_ntoa xdr_float - ether_ntohost inet_ntop xdr_free - freeaddrinfo inet_pton xdr_getcredres - freeifaddrs innetgr xdr_hyper - gai_strerror iruserok xdr_int - getaddrinfo iruserok_af xdr_int16_t - getaliasbyname key_decryptsession xdr_int32_t - getaliasbyname_r key_decryptsession_pk xdr_int64_t - getaliasent key_encryptsession xdr_int8_t - getaliasent_r key_encryptsession_pk xdr_keybuf - gethostbyaddr key_gendes xdr_key_netstarg - gethostbyaddr_r key_get_conv xdr_key_netstres - gethostbyname key_secretkey_is_set xdr_keystatus - gethostbyname2 key_setnet xdr_long - gethostbyname2_r key_setsecret xdr_longlong_t - gethostbyname_r netname2host xdrmem_create - gethostent netname2user xdr_netnamestr - gethostent_r ntohl xdr_netobj - getifaddrs ntohs xdr_opaque - getipv4sourcefilter passwd2des xdr_opaque_auth - get_myaddress pmap_getmaps xdr_pmap - getnameinfo pmap_getport xdr_pmaplist - getnetbyaddr pmap_rmtcall xdr_pointer - getnetbyaddr_r pmap_set xdr_quad_t - getnetbyname pmap_unset xdrrec_create - getnetbyname_r rcmd xdrrec_endofrecord - getnetent rcmd_af xdrrec_eof - getnetent_r registerrpc xdrrec_skiprecord - getnetgrent res_init xdr_reference - getnetgrent_r rexec xdr_rejected_reply - getnetname rexec_af xdr_replymsg - getprotobyname rexecoptions xdr_rmtcall_args - getprotobyname_r rpc_createerr xdr_rmtcallres - getprotobynumber rresvport xdr_short - getprotobynumber_r rresvport_af xdr_sizeof - getprotoent rtime xdrstdio_create - getprotoent_r ruserok xdr_string - getpublickey ruserok_af xdr_u_char - getrpcbyname ruserpass xdr_u_hyper - getrpcbyname_r setaliasent xdr_u_int - getrpcbynumber sethostent xdr_uint16_t - getrpcbynumber_r setipv4sourcefilter xdr_uint32_t - getrpcent setnetent xdr_uint64_t - getrpcent_r setnetgrent xdr_uint8_t - getrpcport setprotoent xdr_u_long - getsecretkey setrpcent xdr_u_longlong_t - getservbyname setservent xdr_union - getservbyname_r setsourcefilter xdr_unixcred - getservbyport svcauthdes_stats xdr_u_quad_t - getservbyport_r svcerr_auth xdr_u_short - getservent svcerr_decode xdr_vector - getservent_r svcerr_noproc xdr_void - getsourcefilter svcerr_noprog xdr_wrapstring - h_errlist svcerr_progvers xencrypt - h_errno svcerr_systemerr xprt_register - herror svcerr_weakauth xprt_unregister - h_nerr svc_exit - host2netname svcfd_create - - - The rpcgen, nscd, and rpcinfo commands are not installed. - - - The 'rpc' file (a text file listing RPC services) is not installed. - - Socket-related system calls do not fall in this option group, - because many are also used for other inter-process - communication mechanisms. For example, the 'syslog' routines - use Unix-domain sockets to communicate with the syslog daemon; - syslog is valuable in non-networked contexts. + bool "Networking support" + default y + help + This option group includes networking-specific functions and + data. With EGLIBC_OPTION_EGLIBC_INET disabled, the EGLIBC + installation and API changes as follows: + + - The following libraries are not installed: + + libanl + libnsl + libnss_compat + libnss_dns + libnss_hesiod + libnss_nis + libnss_nisplus + libresolv + + - The following functions and variables are omitted from libc: + + authdes_create hstrerror svc_fdset + authdes_getucred htonl svc_getreq + authdes_pk_create htons svc_getreq_common + authnone_create if_freenameindex svc_getreq_poll + authunix_create if_indextoname svc_getreqset + authunix_create_default if_nameindex svc_max_pollfd + bindresvport if_nametoindex svc_pollfd + callrpc in6addr_any svcraw_create + cbc_crypt in6addr_loopback svc_register + clnt_broadcast inet6_opt_append svc_run + clnt_create inet6_opt_find svc_sendreply + clnt_pcreateerror inet6_opt_finish svctcp_create + clnt_perrno inet6_opt_get_val svcudp_bufcreate + clnt_perror inet6_opt_init svcudp_create + clntraw_create inet6_option_alloc svcudp_enablecache + clnt_spcreateerror inet6_option_append svcunix_create + clnt_sperrno inet6_option_find svcunixfd_create + clnt_sperror inet6_option_init svc_unregister + clnttcp_create inet6_option_next user2netname + clntudp_bufcreate inet6_option_space xdecrypt + clntudp_create inet6_opt_next xdr_accepted_reply + clntunix_create inet6_opt_set_val xdr_array + des_setparity inet6_rth_add xdr_authdes_cred + ecb_crypt inet6_rth_getaddr xdr_authdes_verf + endaliasent inet6_rth_init xdr_authunix_parms + endhostent inet6_rth_reverse xdr_bool + endnetent inet6_rth_segments xdr_bytes + endnetgrent inet6_rth_space xdr_callhdr + endprotoent inet_addr xdr_callmsg + endrpcent inet_aton xdr_char + endservent inet_lnaof xdr_cryptkeyarg + ether_aton inet_makeaddr xdr_cryptkeyarg2 + ether_aton_r inet_netof xdr_cryptkeyres + ether_hostton inet_network xdr_des_block + ether_line inet_nsap_addr xdr_double + ether_ntoa inet_nsap_ntoa xdr_enum + ether_ntoa_r inet_ntoa xdr_float + ether_ntohost inet_ntop xdr_free + freeaddrinfo inet_pton xdr_getcredres + freeifaddrs innetgr xdr_hyper + gai_strerror iruserok xdr_int + getaddrinfo iruserok_af xdr_int16_t + getaliasbyname key_decryptsession xdr_int32_t + getaliasbyname_r key_decryptsession_pk xdr_int64_t + getaliasent key_encryptsession xdr_int8_t + getaliasent_r key_encryptsession_pk xdr_keybuf + gethostbyaddr key_gendes xdr_key_netstarg + gethostbyaddr_r key_get_conv xdr_key_netstres + gethostbyname key_secretkey_is_set xdr_keystatus + gethostbyname2 key_setnet xdr_long + gethostbyname2_r key_setsecret xdr_longlong_t + gethostbyname_r netname2host xdrmem_create + gethostent netname2user xdr_netnamestr + gethostent_r ntohl xdr_netobj + getifaddrs ntohs xdr_opaque + getipv4sourcefilter passwd2des xdr_opaque_auth + get_myaddress pmap_getmaps xdr_pmap + getnameinfo pmap_getport xdr_pmaplist + getnetbyaddr pmap_rmtcall xdr_pointer + getnetbyaddr_r pmap_set xdr_quad_t + getnetbyname pmap_unset xdrrec_create + getnetbyname_r rcmd xdrrec_endofrecord + getnetent rcmd_af xdrrec_eof + getnetent_r registerrpc xdrrec_skiprecord + getnetgrent res_init xdr_reference + getnetgrent_r rexec xdr_rejected_reply + getnetname rexec_af xdr_replymsg + getprotobyname rexecoptions xdr_rmtcall_args + getprotobyname_r rpc_createerr xdr_rmtcallres + getprotobynumber rresvport xdr_short + getprotobynumber_r rresvport_af xdr_sizeof + getprotoent rtime xdrstdio_create + getprotoent_r ruserok xdr_string + getpublickey ruserok_af xdr_u_char + getrpcbyname ruserpass xdr_u_hyper + getrpcbyname_r setaliasent xdr_u_int + getrpcbynumber sethostent xdr_uint16_t + getrpcbynumber_r setipv4sourcefilter xdr_uint32_t + getrpcent setnetent xdr_uint64_t + getrpcent_r setnetgrent xdr_uint8_t + getrpcport setprotoent xdr_u_long + getsecretkey setrpcent xdr_u_longlong_t + getservbyname setservent xdr_union + getservbyname_r setsourcefilter xdr_unixcred + getservbyport svcauthdes_stats xdr_u_quad_t + getservbyport_r svcerr_auth xdr_u_short + getservent svcerr_decode xdr_vector + getservent_r svcerr_noproc xdr_void + getsourcefilter svcerr_noprog xdr_wrapstring + h_errlist svcerr_progvers xencrypt + h_errno svcerr_systemerr xprt_register + herror svcerr_weakauth xprt_unregister + h_nerr svc_exit + host2netname svcfd_create + + - The rpcgen, nscd, and rpcinfo commands are not installed. + + - The 'rpc' file (a text file listing RPC services) is not installed. + + Socket-related system calls do not fall in this option group, + because many are also used for other inter-process + communication mechanisms. For example, the 'syslog' routines + use Unix-domain sockets to communicate with the syslog daemon; + syslog is valuable in non-networked contexts. + + +config EGLIBC_OPTION_EGLIBC_INET_ANL + bool "Asynchronous name lookup" + default y + select EGLIBC_OPTION_EGLIBC_INET + help + This option group includes the `libanl' library which + provides support for asynchronous name lookup. + config EGLIBC_OPTION_EGLIBC_LIBM - bool "libm (math library)" - default y - help - This option group includes the 'libm' library, containing - mathematical functions. If this option group is omitted, then - an EGLIBC installation does not include shared or unshared versions - of the math library. - - Note that this does not remove all floating-point related - functionality from EGLIBC; for example, 'printf' and 'scanf' - can still print and read floating-point values with this option - group disabled. - - Note that the ISO Standard C++ library 'libstdc++' depends on - EGLIBC's math library 'libm'. If you disable this option - group, you will not be able to build 'libstdc++' against the - resulting EGLIBC installation. + bool "libm (math library)" + default y + help + This option group includes the 'libm' library, containing + mathematical functions. If this option group is omitted, then + an EGLIBC installation does not include shared or unshared versions + of the math library. + + Note that this does not remove all floating-point related + functionality from EGLIBC; for example, 'printf' and 'scanf' + can still print and read floating-point values with this option + group disabled. + + Note that the ISO Standard C++ library 'libstdc++' depends on + EGLIBC's math library 'libm'. If you disable this option + group, you will not be able to build 'libstdc++' against the + resulting EGLIBC installation. + + +config EGLIBC_OPTION_EGLIBC_LIBM_BIG + bool "Math library size" + default y + help + This option group enables default configuration of the math library. + Not selecting this option group removes most of the extended and + double precision math functions and replaces them with wrappers + to the single precision couterparts. + Doing so greatly degrades quality of calculations carried + out by the functions of the math library, but also significantly + reduces the size of the libm. + This option group is useful for systems that do not rely on precise + floating point math. + config EGLIBC_OPTION_EGLIBC_LOCALES - bool "Locale definitions" - default y - help - This option group includes all locale definitions other than - that for the "C" locale. If this option group is omitted, then - only the "C" locale is supported. + bool "Locale definitions" + default y + help + This option group includes all locale definitions other than + that for the "C" locale. If this option group is omitted, then + only the "C" locale is supported. config EGLIBC_OPTION_EGLIBC_LOCALE_CODE - bool "Locale functions" - default y - depends EGLIBC_OPTION_POSIX_C_LANG_WIDE_CHAR - help - This option group includes locale support functions, programs, - and libraries. With EGLIBC_LOCALE_FUNCTIONS disabled, - EGLIBC supports only the 'C' locale (also known as 'POSIX'), - and ignores the settings of the 'LANG' and 'LC_*' environment - variables. - - With EGLIBC_LOCALE_CODE disabled, the following - functions are omitted from libc: + bool "Locale functions" + default y + select EGLIBC_OPTION_POSIX_C_LANG_WIDE_CHAR + help + This option group includes locale support functions, programs, + and libraries. With EGLIBC_OPTION_EGLIBC_LOCALE_CODE disabled, + EGLIBC supports only the 'C' locale (also known as 'POSIX'), + and ignores the settings of the 'LANG' and 'LC_*' environment + variables. + + With EGLIBC_OPTION_EGLIBC_LOCALE_CODE disabled, the following + functions are omitted from libc: + + duplocale localeconv nl_langinfo rpmatch strfmon_l + freelocale newlocale nl_langinfo_l strfmon uselocale + + Furthermore, only the LC_CTYPE and LC_TIME categories of the + standard "C" locale are available. + + The EGLIBC_OPTION_EGLIBC_CATGETS option group depends on this option + group; if you disable EGLIBC_OPTION_EGLIBC_LOCALE_CODE, you must also + disable EGLIBC_OPTION_EGLIBC_CATGETS. + + +config EGLIBC_OPTION_EGLIBC_MEMUSAGE + bool "Memory profiling library" + default y + help + This option group includes the `libmemusage' library and + the `memusage' and `memusagestat' utilities. + These components provide memory profiling functions. + + EGLIBC_OPTION_EGLIBC_MEMUSAGE_DEFAULT_BUFFER_SIZE + + Libmemusage library buffers the profiling data in memory + before writing it out to disk. By default, the library + allocates 1.5M buffer, which can be substantial for some + systems. EGLIBC_OPTION_EGLIBC_MEMUSAGE_DEFAULT_BUFFER_SIZE option + allows to change the default buffer size. It specifies + the number of entries the buffer should have. + On most architectures one buffer entry amounts to 48 bytes, + so setting this option to the value of 512 will reduce the size of + the memory buffer to 24K. - duplocale localeconv nl_langinfo rpmatch strfmon_l - freelocale newlocale nl_langinfo_l strfmon uselocale - Furthermore, only the LC_CTYPE and LC_TIME categories of the - standard "C" locale are available. +config EGLIBC_OPTION_EGLIBC_NIS + bool "Support for NIS, NIS+, and the special 'compat' services." + default y + select EGLIBC_OPTION_EGLIBC_INET + select EGLIBC_OPTION_EGLIBC_SUNRPC + help + This option group includes the NIS, NIS+, and 'compat' Name + Service Switch service libraries. When it is disabled, those + services libraries are not installed; you should remove any + references to them from your 'nsswitch.conf' file. - The EGLIBC_CATGETS option group depends on this option - group; if you disable EGLIBC_LOCALE_CODE, you must also - disable EGLIBC_CATGETS. + This option group depends on the EGLIBC_OPTION_EGLIBC_INET option + group; you must enable that to enable this option group. -config EGLIBC_OPTION_EGLIBC_NIS - bool "Support for NIS, NIS+, and the special 'compat' services." - default y - depends EGLIBC_OPTION_EGLIBC_INET - depends EGLIBC_OPTION_EGLIBC_SUNRPC - help - This option group includes the NIS, NIS+, and 'compat' Name - Service Switch service libraries. When it is disabled, those - services libraries are not installed; you should remove any - references to them from your 'nsswitch.conf' file. - - This option group depends on the EGLIBC_INET option - group; you must enable that to enable this option group. config EGLIBC_OPTION_EGLIBC_NSSWITCH - bool "Name service switch (nsswitch) support" - default y - help - - This option group includes support for the 'nsswitch' facility. - With this option group enabled, all EGLIBC functions for - accessing various system databases (passwords and groups; - networking; aliases; public keys; and so on) consult the - '/etc/nsswitch.conf' configuration file to decide how to handle - queries. - - With this option group disabled, EGLIBC uses a fixed list of - services to satisfy queries on each database, as requested by - configuration files specified when EGLIBC is built. Your - 'option-groups.config' file must set the following two - variables: - - EGLIBC_NSSWITCH_FIXED_CONFIG - - Set this to the name of a file whose contents observe the - same syntax as an ordinary '/etc/nsswitch.conf' file. The - EGLIBC build process parses this file just as EGLIBC would - at run time if EGLIBC_NSSWITCH were enabled, and - produces a C library that uses the nsswitch service - libraries to search for database entries as this file - specifies, instead of consulting '/etc/nsswitch.conf' at run - time. - - This should be an absolute filename. The EGLIBC build - process may use it from several different working - directories. It may include references to Makefile - variables like 'common-objpfx' (the top of the build tree, - with a trailing slash), or '..' (the top of the source tree, - with a trailing slash). - - The EGLIBC source tree includes a sample configuration file - named 'nss/fixed-nsswitch.conf'; for simple configurations, - you will probably want to delete references to databases not - needed on your system. - - EGLIBC_NSSWITCH_FIXED_FUNCTIONS - - The EGLIBC build process uses this file to decide which - functions to make available from which service libraries. - The file 'nss/fixed-nsswitch.functions' serves as a sample - configuration file for this setting, and explains its syntax - and meaning in more detail. - - This should be an absolute file name. The EGLIBC build - process may use it from several different working - directories. It may include references to Makefile - variables like 'common-objpfx' (the top of the build tree, - with a trailing slash), or '..' (the top of the source tree, - with a trailing slash). - - Be sure to mention each function in each service you wish to - use. If you do not mention a service's function here, the - EGLIBC database access functions will not find it, even if - it is listed in the EGLIBC_NSSWITCH_FIXED_CONFIG - file. - - In this arrangement, EGLIBC will not use the 'dlopen' and - 'dlsym' functions to find database access functions. Instead, - libc hard-codes references to the service libraries' database - access functions. You must explicitly link your program - against the name service libraries (those whose names start - with 'libnss_', in the sysroot's '/lib' directory) whose - functions you intend to use. This arrangement helps - system-wide static analysis tools decide which functions a - system actually uses. - - Note that some nsswitch service libraries require other option - groups to be enabled; for example, the EGLIBC_INET - option group must be enabled to use the 'libnss_dns.so.2' - service library, which uses the Domain Name System network - protocol to answer queries. + bool "Name service switch (nsswitch) support" + default y + select EGLIBC_OPTION_EGLIBC_INET + help + + This option group includes support for the 'nsswitch' facility. + With this option group enabled, all EGLIBC functions for + accessing various system databases (passwords and groups; + networking; aliases; public keys; and so on) consult the + '/etc/nsswitch.conf' configuration file to decide how to handle + queries. + + With this option group disabled, EGLIBC uses a fixed list of + services to satisfy queries on each database, as requested by + configuration files specified when EGLIBC is built. Your + 'option-groups.config' file must set the following two + variables: + + EGLIBC_OPTION_EGLIBC_NSSWITCH_FIXED_CONFIG + + Set this to the name of a file whose contents observe the + same syntax as an ordinary '/etc/nsswitch.conf' file. The + EGLIBC build process parses this file just as EGLIBC would + at run time if EGLIBC_NSSWITCH were enabled, and + produces a C library that uses the nsswitch service + libraries to search for database entries as this file + specifies, instead of consulting '/etc/nsswitch.conf' at run + time. + + This should be an absolute filename. The EGLIBC build + process may use it from several different working + directories. It may include references to Makefile + variables like 'common-objpfx' (the top of the build tree, + with a trailing slash), or '..' (the top of the source tree, + with a trailing slash). + + The EGLIBC source tree includes a sample configuration file + named 'nss/fixed-nsswitch.conf'; for simple configurations, + you will probably want to delete references to databases not + needed on your system. + + EGLIBC_OPTION_EGLIBC_NSSWITCH_FIXED_FUNCTIONS + + The EGLIBC build process uses this file to decide which + functions to make available from which service libraries. + The file 'nss/fixed-nsswitch.functions' serves as a sample + configuration file for this setting, and explains its syntax + and meaning in more detail. + + This should be an absolute file name. The EGLIBC build + process may use it from several different working + directories. It may include references to Makefile + variables like 'common-objpfx' (the top of the build tree, + with a trailing slash), or '..' (the top of the source tree, + with a trailing slash). + + Be sure to mention each function in each service you wish to + use. If you do not mention a service's function here, the + EGLIBC database access functions will not find it, even if + it is listed in the EGLIBC_OPTION_EGLIBC_NSSWITCH_FIXED_CONFIG + file. + + In this arrangement, EGLIBC will not use the 'dlopen' and + 'dlsym' functions to find database access functions. Instead, + libc hard-codes references to the service libraries' database + access functions. You must explicitly link your program + against the name service libraries (those whose names start + with 'libnss_', in the sysroot's '/lib' directory) whose + functions you intend to use. This arrangement helps + system-wide static analysis tools decide which functions a + system actually uses. + + Note that some nsswitch service libraries require other option + groups to be enabled; for example, the EGLIBC_OPTION_EGLIBC_INET + option group must be enabled to use the 'libnss_dns.so.2' + service library, which uses the Domain Name System network + protocol to answer queries. + config EGLIBC_OPTION_EGLIBC_RCMD - bool "Support for 'rcmd' and related library functions" - default y - depends EGLIBC_OPTION_EGLIBC_INET - help - This option group includes functions for running commands on - remote machines via the 'rsh' protocol, and doing authentication - related to those functions. This also includes functions that - use the 'rexec' protocol. - - This option group includes the following functions: - - rcmd ruserok - rcmd_af ruserok_af - rexec iruserok - rexec_af iruserok_af - rresvport ruserpass - rresvport_af - + bool "Support for 'rcmd' and related library functions" + default y + select EGLIBC_OPTION_EGLIBC_INET + help + This option group includes functions for running commands on + remote machines via the 'rsh' protocol, and doing authentication + related to those functions. This also includes functions that + use the 'rexec' protocol. + + This option group includes the following functions: + + rcmd ruserok + rcmd_af ruserok_af + rexec iruserok + rexec_af iruserok_af + rresvport ruserpass + rresvport_af + + +config EGLIBC_OPTION_EGLIBC_RTLD_DEBUG + bool "Runtime linker debug print outs" + default y + help + This option group enables debug output of the runtime linker + which is activated via LD_DEBUG and LD_TRACE_PRELINKING + environment variables. Disabling this option group yields + a smaller runtime linker binary. + BEWARE: Disabling this option group is likely to break + the `ldd' utility which may also be used by the prelinker. + In particular, the `--unused' ldd option will not work correctly. + + config EGLIBC_OPTION_EGLIBC_SPAWN - bool "Support for POSIX posix_spawn functions" - default y - help - This option group includes the POSIX functions for executing - programs in child processes without using 'fork' or 'vfork'. - - This option group includes the following functions: - - posix_spawn - posix_spawnattr_destroy - posix_spawnattr_getflags - posix_spawnattr_getpgroup - posix_spawnattr_getschedparam - posix_spawnattr_getschedpolicy - posix_spawnattr_getsigdefault - posix_spawnattr_getsigmask - posix_spawnattr_init - posix_spawnattr_setflags - posix_spawnattr_setpgroup - posix_spawnattr_setschedparam - posix_spawnattr_setschedpolicy - posix_spawnattr_setsigdefault - posix_spawnattr_setsigmask - posix_spawn_file_actions_addclose - posix_spawn_file_actions_adddup2 - posix_spawn_file_actions_addopen - posix_spawn_file_actions_destroy - posix_spawn_file_actions_init - posix_spawnp - - This option group also provides the ability for the iconv, - localedef, and locale programs to operate transparently on - compressed charset definitions. When this option group is - disabled, those programs will only operate on uncompressed - charmap files. + bool "Support for POSIX posix_spawn functions" + default y + help + This option group includes the POSIX functions for executing + programs in child processes without using 'fork' or 'vfork'. + + This option group includes the following functions: + + posix_spawn + posix_spawnattr_destroy + posix_spawnattr_getflags + posix_spawnattr_getpgroup + posix_spawnattr_getschedparam + posix_spawnattr_getschedpolicy + posix_spawnattr_getsigdefault + posix_spawnattr_getsigmask + posix_spawnattr_init + posix_spawnattr_setflags + posix_spawnattr_setpgroup + posix_spawnattr_setschedparam + posix_spawnattr_setschedpolicy + posix_spawnattr_setsigdefault + posix_spawnattr_setsigmask + posix_spawn_file_actions_addclose + posix_spawn_file_actions_adddup2 + posix_spawn_file_actions_addopen + posix_spawn_file_actions_destroy + posix_spawn_file_actions_init + posix_spawnp + + This option group also provides the ability for the iconv, + localedef, and locale programs to operate transparently on + compressed charset definitions. When this option group is + disabled, those programs will only operate on uncompressed + charmap files. + config EGLIBC_OPTION_EGLIBC_STREAMS - bool "Support for accessing STREAMS." - default y - help - This option group includes functions for reading and writing - messages to and from STREAMS. The STREAMS interface provides a - uniform mechanism for implementing networking services and other - character-based I/O. (STREAMS are not to be confused with - FILE objects, also called 'streams'.) - - This option group includes the following functions: - - getmsg putpmsg - getpmsg fattach - isastream fdetach - putmsg + bool "Support for accessing STREAMS." + default y + help + This option group includes functions for reading and writing + messages to and from STREAMS. The STREAMS interface provides a + uniform mechanism for implementing networking services and other + character-based I/O. (STREAMS are not to be confused with + FILE objects, also called 'streams'.) + + This option group includes the following functions: + + getmsg putpmsg + getpmsg fattach + isastream fdetach + putmsg + config EGLIBC_OPTION_EGLIBC_SUNRPC - bool "Support for the Sun 'RPC' protocol." - default y - depends EGLIBC_OPTION_EGLIBC_INET - help - This option group includes support for the Sun RPC protocols, - including the 'rpcgen' and 'rpcinfo' programs. + bool "Support for the Sun 'RPC' protocol." + default y + select EGLIBC_OPTION_EGLIBC_INET + help + This option group includes support for the Sun RPC protocols, + including the 'rpcgen' and 'rpcinfo' programs. + config EGLIBC_OPTION_EGLIBC_UTMP - bool "Older access functions for 'utmp' login records" - default y - help - This option group includes the older 'utent' family of - functions for accessing user login records in the 'utmp' file. - POSIX omits these functions in favor of the 'utxent' family, - and they are obsolete on systems other than Linux. - - This option group includes the following functions: - - endutent - getutent - getutent_r - getutid - getutid_r - getutline - getutline_r - logwtmp - pututline - setutent - updwtmp - utmpname - - This option group includes the following libraries: - - libutil.so (and libutil.a) + bool "Older access functions for 'utmp' login records" + default y + help + This option group includes the older 'utent' family of + functions for accessing user login records in the 'utmp' file. + POSIX omits these functions in favor of the 'utxent' family, + and they are obsolete on systems other than Linux. + + This option group includes the following functions: + + endutent + getutent + getutent_r + getutid + getutid_r + getutline + getutline_r + logwtmp + pututline + setutent + updwtmp + utmpname + + This option group includes the following libraries: + + libutil.so (and libutil.a) + config EGLIBC_OPTION_EGLIBC_UTMPX - bool "POSIX access functions for 'utmp' login records" - default y - depends EGLIBC_OPTION_EGLIBC_UTMP - help - This option group includes the POSIX functions for reading and - writing user login records in the 'utmp' file (usually - '/var/run/utmp'). The POSIX functions operate on 'struct - utmpx' structures, as opposed to the family of older 'utent' - functions, which operate on 'struct utmp' structures. - - This option group includes the following functions: - - endutxent - getutmp - getutmpx - getutxent - getutxid - getutxline - pututxline - setutxent - updwtmpx - utmpxname + bool "POSIX access functions for 'utmp' login records" + default y + select EGLIBC_OPTION_EGLIBC_UTMP + help + This option group includes the POSIX functions for reading and + writing user login records in the 'utmp' file (usually + '/var/run/utmp'). The POSIX functions operate on 'struct + utmpx' structures, as opposed to the family of older 'utent' + functions, which operate on 'struct utmp' structures. + + This option group includes the following functions: + + endutxent + getutmp + getutmpx + getutxent + getutxid + getutxline + pututxline + setutxent + updwtmpx + utmpxname + config EGLIBC_OPTION_EGLIBC_WORDEXP - bool "Shell-style word expansion" - default y - help - This option group includes the 'wordexp' function for - performing word expansion in the manner of the shell, and the - accompanying 'wordfree' function. + bool "Shell-style word expansion" + default y + help + This option group includes the 'wordexp' function for + performing word expansion in the manner of the shell, and the + accompanying 'wordfree' function. + config EGLIBC_OPTION_POSIX_C_LANG_WIDE_CHAR - bool "ISO C library wide character functions, excluding I/O" - default y - help - This option group includes the functions defined by the ISO C - standard for working with wide and multibyte characters in - memory. Functions for reading and writing wide and multibyte - characters from and to files call in the - POSIX_WIDE_CHAR_DEVICE_IO option group. - - This option group includes the following functions: - - btowc mbsinit wcscspn wcstoll - iswalnum mbsrtowcs wcsftime wcstombs - iswalpha mbstowcs wcslen wcstoul - iswblank mbtowc wcsncat wcstoull - iswcntrl swprintf wcsncmp wcstoumax - iswctype swscanf wcsncpy wcsxfrm - iswdigit towctrans wcspbrk wctob - iswgraph towlower wcsrchr wctomb - iswlower towupper wcsrtombs wctrans - iswprint vswprintf wcsspn wctype - iswpunct vswscanf wcsstr wmemchr - iswspace wcrtomb wcstod wmemcmp - iswupper wcscat wcstof wmemcpy - iswxdigit wcschr wcstoimax wmemmove - mblen wcscmp wcstok wmemset - mbrlen wcscoll wcstol - mbrtowc wcscpy wcstold + bool "ISO C library wide character functions, excluding I/O" + default y + help + This option group includes the functions defined by the ISO C + standard for working with wide and multibyte characters in + memory. Functions for reading and writing wide and multibyte + characters from and to files call in the + EGLIBC_OPTION_POSIX_WIDE_CHAR_DEVICE_IO option group. + + This option group includes the following functions: + + btowc mbsinit wcscspn wcstoll + iswalnum mbsrtowcs wcsftime wcstombs + iswalpha mbstowcs wcslen wcstoul + iswblank mbtowc wcsncat wcstoull + iswcntrl swprintf wcsncmp wcstoumax + iswctype swscanf wcsncpy wcsxfrm + iswdigit towctrans wcspbrk wctob + iswgraph towlower wcsrchr wctomb + iswlower towupper wcsrtombs wctrans + iswprint vswprintf wcsspn wctype + iswpunct vswscanf wcsstr wmemchr + iswspace wcrtomb wcstod wmemcmp + iswupper wcscat wcstof wmemcpy + iswxdigit wcschr wcstoimax wmemmove + mblen wcscmp wcstok wmemset + mbrlen wcscoll wcstol + mbrtowc wcscpy wcstold + config EGLIBC_OPTION_POSIX_REGEXP - bool "Regular expressions" - default y - help - This option group includes the POSIX regular expression - functions, and the associated non-POSIX extensions and - compatibility functions. - - With POSIX_REGEXP disabled, the following functions are - omitted from libc: - - re_comp re_max_failures regcomp - re_compile_fastmap re_search regerror - re_compile_pattern re_search_2 regexec - re_exec re_set_registers regfree - re_match re_set_syntax rpmatch - re_match_2 re_syntax_options - - Furthermore, the compatibility regexp interface defined in the - header file, 'compile', 'step', and 'advance', is - omitted. + bool "Regular expressions" + default y + help + This option group includes the POSIX regular expression + functions, and the associated non-POSIX extensions and + compatibility functions. + + With EGLIBC_OPTION_POSIX_REGEXP disabled, the following functions are + omitted from libc: + + re_comp re_max_failures regcomp + re_compile_fastmap re_search regerror + re_compile_pattern re_search_2 regexec + re_exec re_set_registers regfree + re_match re_set_syntax rpmatch + re_match_2 re_syntax_options + + Furthermore, the compatibility regexp interface defined in the + header file, 'compile', 'step', and 'advance', is + omitted. + + +config EGLIBC_OPTION_POSIX_REGEXP_GLIBC + bool "Regular expressions from GLIBC" + default y + select EGLIBC_OPTION_POSIX_REGEXP + help + This option group specifies which regular expression + library to use. The choice is between regex + implementation from GLIBC and regex implementation from + libiberty. The GLIBC variant is fully POSIX conformant and + optimized for speed; regex from libiberty is more than twice + as small while still is enough for most practical purposes. + config EGLIBC_OPTION_POSIX_WIDE_CHAR_DEVICE_IO - bool "Input and output functions for wide characters" - default y - depends EGLIBC_OPTION_POSIX_C_LANG_WIDE_CHAR - help - This option group includes functions for reading and writing - wide characters to and from streams. - - This option group includes the following functions: - - fgetwc fwprintf putwchar vwscanf - fgetws fwscanf ungetwc wprintf - fputwc getwc vfwprintf wscanf - fputws getwchar vfwscanf - fwide putwc vwprintf - - This option group further includes the following unlocked - variants of the above functions: - - fgetwc_unlocked getwc_unlocked - fgetws_unlocked getwchar_unlocked - fputwc_unlocked putwc_unlocked - fputws_unlocked putwchar_unlocked - - Note that the GNU standard C++ library, 'libstdc++.so', uses - some of these functions; you will not be able to link or run - C++ programs if you disable this option group. - - This option group also affects the behavior of the following - functions: - - fdopen - fopen - fopen64 - freopen - freopen64 - - These functions all take an OPENTYPE parameter which may - contain a string of the form ",ccs=CHARSET", indicating that - the underlying file uses the character set named CHARSET. - This produces a wide-oriented stream, which is only useful - when the functions included in this option group are present. - If the user attempts to open a file specifying a character set - in the OPENTYPE parameter, and EGLIBC was built with this - option group disabled, the function returns NULL, and sets - errno to EINVAL. + bool "Input and output functions for wide characters" + default y + select EGLIBC_OPTION_POSIX_C_LANG_WIDE_CHAR + help + This option group includes functions for reading and writing + wide characters to and from streams. + + This option group includes the following functions: + + fgetwc fwprintf putwchar vwscanf + fgetws fwscanf ungetwc wprintf + fputwc getwc vfwprintf wscanf + fputws getwchar vfwscanf + fwide putwc vwprintf + + This option group further includes the following unlocked + variants of the above functions: + + fgetwc_unlocked getwc_unlocked + fgetws_unlocked getwchar_unlocked + fputwc_unlocked putwc_unlocked + fputws_unlocked putwchar_unlocked + + Note that the GNU standard C++ library, 'libstdc++.so', uses + some of these functions; you will not be able to link or run + C++ programs if you disable this option group. + + This option group also affects the behavior of the following + functions: + + fdopen + fopen + fopen64 + freopen + freopen64 + + These functions all take an OPENTYPE parameter which may + contain a string of the form ",ccs=CHARSET", indicating that + the underlying file uses the character set named CHARSET. + This produces a wide-oriented stream, which is only useful + when the functions included in this option group are present. + If the user attempts to open a file specifying a character set + in the OPENTYPE parameter, and EGLIBC was built with this + option group disabled, the function returns NULL, and sets + errno to EINVAL.