path: root/kconfig/eglibc-kconfigs/eglibc-trunk.kconfig

# This file documents the option groups EGLIBC currently supports, in
# a format akin to the Linux Kconfig system's.  The syntax may change
# over time.
#
# An entry of the form:
#
#   config OPTION_GROUP_NAME
#       bool "one-line explanation of what this option group controls"
#       help
#           Multi-line help explaining the option group's meaning in
#           some detail, terminated by indentation level.
#
# defines an option group whose variable is OPTION_GROUP_NAME, with
# meaningful values 'y' (enabled) and 'n' (disabled).  The
# documentation is formatted to be consumed by some sort of
# interactive configuration interface, but EGLIBC doesn't have such an
# interface yet.
#
# An option may have a 'depends' line, indicating which other options
# must also be enabled if this option is.  At present, EGLIBC doesn't
# check that these dependencies are satisfied.
#
# Option group variables get their default values from the file
# 'option-groups.defaults', in the top directory of the EGLIBC source
# tree.  By default, all EGLIBC option groups are enabled --- their
# variables are set to 'y'.
#
# After including 'option-groups.defaults', the EGLIBC make machinery
# includes the file 'option-groups.config' from the top of the build
# tree, if it is present.  Developers can place assignments to option
# group variables in that file to override the defaults.  For example,
# to disable an option group, place a line of the form:
#
#    OPTION_GROUP_NAME = n
#
# in 'option-groups.config' at the top of your build tree.  To
# explicitly enable an option group, you may also write:
#
#    OPTION_GROUP_NAME = y
#
# although this simply reestablishes the value already set by
# 'option-groups.defaults'.

config KEMBTK_EGLIBC_OPTION_EGLIBC_BACKTRACE
	bool "Functions for producing backtraces"
	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

config KEMBTK_EGLIBC_OPTION_EGLIBC_BIG_MACROS
	bool "Use extensive inline code"
	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 KEMBTK_EGLIBC_OPTION_EGLIBC_BSD
	bool "BSD-specific functions, and their compatibility stubs"
	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 KEMBTK_EGLIBC_OPTION_EGLIBC_CXX_TESTS
	bool "Tests that link against the standard C++ library."
	depends on KEMBTK_EGLIBC_OPTION_POSIX_WIDE_CHAR_DEVICE_IO
	depends on KEMBTK_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 KEMBTK_EGLIBC_OPTION_EGLIBC_CHARSETS
	bool "iconv/gconv character set conversion libraries"
	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 KEMBTK_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 KEMBTK_EGLIBC_OPTION_EGLIBC_CRYPT_UFC
	bool "Ultra fast `crypt' implementation"
	depends on KEMBTK_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 KEMBTK_EGLIBC_OPTION_EGLIBC_DB_ALIASES
	bool "Functions for accessing the mail aliases database"
	help
		This option group includues 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 KEMBTK_EGLIBC_OPTION_EGLIBC_ENVZ
	bool "Functions for handling envz-style environment vectors."
	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 KEMBTK_EGLIBC_OPTION_EGLIBC_FCVT
	bool "Functions for converting floating-point numbers to strings"
	help
		This option group includes functions for converting
		floating-point numbers to strings.

		This option group includes the following functions:

		ecvt           qecvt
		ecvt_r		qecvt_r
		fcvt		qfcvt
		fcvt_r		qfcvt_r
		gcvt		qgcvt

config KEMBTK_EGLIBC_OPTION_EGLIBC_FMTMSG
	bool "Functions for formatting messages"
	default y
	help
		This option group includes the following functions:

		addseverity    fmtmsg

config KEMBTK_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.

		This option group includes the following functions:

		endfsent       getfsspec
		getfsent       setfsent
		getfsfile

config KEMBTK_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

config KEMBTK_EGLIBC_OPTION_EGLIBC_INET
	bool "Networking support"
	default y
	help
		This option group includes networking-specific functions and
		data.  With 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 KEMBTK_EGLIBC_OPTION_EGLIBC_SUNRPC
	bool "Support for the Sun 'RPC' protocol."
	default y
	depends on KEMBTK_EGLIBC_OPTION_EGLIBC_INET
	help
		This option group includes support for the Sun RPC protocols,
		including the 'rpcgen' and 'rpcinfo' programs.

config KEMBTK_EGLIBC_OPTION_EGLIBC_NIS
	bool "Support for NIS, NIS+, and the special 'compat' services."
	depends on KEMBTK_EGLIBC_OPTION_EGLIBC_INET
	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 OPTION_EGLIBC_INET option
		group; you must enable that to enable this option group.

config KEMBTK_EGLIBC_OPTION_EGLIBC_ADVANCED_INET6
	bool "IPv6 Advanced Sockets API support (RFC3542)"
	depends on KEMBTK_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 KEMBTK_EGLIBC_OPTION_EGLIBC_INET_ANL
	bool "Asynchronous name lookup"
	depends on KEMBTK_EGLIBC_OPTION_EGLIBC_INET
	help
		This option group includes the `libanl' library which
		provides support for asynchronous name lookup.

config KEMBTK_EGLIBC_OPTION_EGLIBC_RCMD
	bool "Support for 'rcmd' and related library functions"
	depends on KEMBTK_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 KEMBTK_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.

config KEMBTK_EGLIBC_OPTION_EGLIBC_LIBM_BIG
	depends on KEMBTK_EGLIBC_OPTION_EGLIBC_LIBM
	bool "Math library with double precision functions"
	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 KEMBTK_EGLIBC_OPTION_EGLIBC_LOCALES
	bool "Locale definitions"
	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 KEMBTK_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.

config EMBTK_EGLIBC_OPTION_EGLIBC_MEMUSAGE_DEFAULT_BUFFER_SIZE
	int "Libmemusage library buffers size"
	default 512
	depends on KEMBTK_EGLIBC_OPTION_EGLIBC_MEMUSAGE
	help
		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.  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.

config EMBTK_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:

config KEMBTK_EGLIBC_OPTION_EGLIBC_NSSWITCH_FIXED_CONFIG
	string "Alternate file for nsswitch.conf (see below help please)"
	depends on !KEMBTK_EGLIBC_OPTION_EGLIBC_NSSWITCH
	help
		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 OPTION_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.

config KEMBTK_EGLIBC_OPTION_EGLIBC_NSSWITCH_FIXED_FUNCTIONS
	string "Alternate nss/fixed-nsswitch.functions file (see below help please)"
	depends on !KEMBTK_EGLIBC_OPTION_EGLIBC_NSSWITCH
	help
		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 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 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 KEMBTK_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 KEMBTK_EGLIBC_OPTION_EGLIBC_SPAWN
	bool "Support for POSIX posix_spawn functions"
	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 KEMBTK_EGLIBC_OPTION_EGLIBC_STREAMS
	bool "Support for accessing STREAMS."
	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
		<stdio.h> FILE objects, also called 'streams'.)

		This option group includes the following functions:

		getmsg          putpmsg
		getpmsg         fattach
		isastream       fdetach
		putmsg

config KEMBTK_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)

config KEMBTK_EGLIBC_OPTION_EGLIBC_GETLOGIN
	bool "The getlogin function"
	depends on KEMBTK_EGLIBC_OPTION_EGLIBC_UTMP
	default y
	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 KEMBTK_EGLIBC_OPTION_EGLIBC_UTMPX
	bool "POSIX access functions for 'utmp' login records"
	depends on KEMBTK_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 KEMBTK_EGLIBC_OPTION_EGLIBC_IDN
	bool "International domain names support"
	help
		This option group includes the `libcidn' library which
		provides support for international domain names.

config KEMBTK_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.

config KEMBTK_EGLIBC_OPTION_POSIX_C_LANG_WIDE_CHAR
	bool "ISO C library wide character functions, excluding I/O"
	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
		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 KEMBTK_EGLIBC_OPTION_POSIX_WIDE_CHAR_DEVICE_IO
	bool "Input and output functions for wide characters"
	depends on KEMBTK_EGLIBC_OPTION_POSIX_C_LANG_WIDE_CHAR
	help
		This option group includes functions for reading and writing
		wide characters to and from <stdio.h> 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.

config KEMBTK_EGLIBC_OPTION_EGLIBC_LOCALE_CODE
	bool "Locale functions"
	depends on KEMBTK_EGLIBC_OPTION_POSIX_C_LANG_WIDE_CHAR
	help
		This option group includes locale support functions, programs,
		and libraries.  With OPTION_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 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 OPTION_EGLIBC_CATGETS option group depends on this option
		group; if you disable OPTION_EGLIBC_LOCALE_CODE, you must also
		disable OPTION_EGLIBC_CATGETS.

config KEMBTK_EGLIBC_OPTION_EGLIBC_CATGETS
	bool "Functions for accessing message catalogs"
	depends on KEMBTK_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 OPTION_EGLIBC_LOCALE_CODE
		option group; if you disable that, you must also disable this.

config KEMBTK_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 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
		<regexp.h> header file, 'compile', 'step', and 'advance', is
		omitted.

config KEMBTK_EGLIBC_OPTION_POSIX_REGEXP_GLIBC
	bool "Regular expressions from GLIBC"
	depends on KEMBTK_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.


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