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poky/meta/recipes-core/glibc/glibc/option-groups.patch
Juro Bystricky 9fc63c57a8 eglibc: modified option-groups.h generation 
option-groups.h only explicitely #defines options that are enabled.
EGLIBC options are typically pre-processed under the assumption that if
an option is not explicitely defined then it evaluates as 0.
This assumption is correct, but it generates a compiler warning
message each time an undefined symbol is being evaluated.
In order to remove the warnings, each EGLIBC option is now defined
as 1 if the option is enabled or as 0 otherwise.
The consequence is we cannot use #ifdef OPTION_XXX when evaluating
the option, we must always use #if OPTION_XXX.

[YOCTO #7001]

(From OE-Core rev: 7f1bdc331304a61a4836a5752bca210450b6c5b5)

Signed-off-by: Juro Bystricky <jurobystricky@hotmail.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
2014-12-05 18:01:06 +00:00

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Eglibc option group infrastructure
Upstream-Status: Pending
Index: git/option-groups.def
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ git/option-groups.def 2014-08-27 07:26:51.652070587 +0000
@@ -0,0 +1,868 @@
+# 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 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 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 on' 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 EGLIBC_ADVANCED_INET6
+ bool "IPv6 Advanced Sockets API support (RFC3542)"
+ depends on 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_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 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 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 EGLIBC_CXX_TESTS
+ bool "Tests that link against the standard C++ library."
+ depends on POSIX_WIDE_CHAR_DEVICE_IO && 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. So those
+ option groups must be enabled if this test is enabled.
+
+config EGLIBC_CATGETS
+ bool "Functions for accessing message catalogs"
+ depends on EGLIBC_LOCALE_CODE
+ help
+ This option group includes functions for accessing message
+ catalogs: catopen, catclose, and catgets.
+
+ This option group depends on the EGLIBC_LOCALE_CODE
+ option group.
+
+config 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 EGLIBC_CRYPT
+ bool "Encryption library"
+ 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_CRYPT_UFC
+ bool "Ultra fast `crypt' implementation"
+ depends on 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_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 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 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 EGLIBC_FMTMSG
+ bool "Functions for formatting messages"
+ help
+ This option group includes the following functions:
+
+ addseverity fmtmsg
+
+config EGLIBC_FSTAB
+ bool "Access functions for 'fstab'"
+ 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 EGLIBC_FTRAVERSE
+ bool "Functions for traversing file hierarchies"
+ 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 EGLIBC_GETLOGIN
+ bool "The getlogin function"
+ depends on 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_IDN
+ bool "International domain names support"
+ help
+ This option group includes the `libcidn' library which
+ provides support for international domain names.
+
+config EGLIBC_INET
+ bool "Networking support"
+ 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:
+
+ 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_INET_ANL
+ bool "Asynchronous name lookup"
+ depends on EGLIBC_INET
+ help
+ This option group includes the `libanl' library which
+ provides support for asynchronous name lookup.
+
+config EGLIBC_LIBM
+ bool "libm (math library)"
+ 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_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 EGLIBC_LOCALE_CODE
+ bool "Locale functions"
+ depends on POSIX_C_LANG_WIDE_CHAR
+ help
+ This option group includes locale support functions, programs,
+ and libraries. With 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_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_CATGETS option group depends on this option group.
+
+
+config EGLIBC_MEMUSAGE
+ bool "Memory profiling library"
+ help
+ This option group includes the `libmemusage' library and
+ the `memusage' and `memusagestat' utilities.
+ These components provide memory profiling functions.
+
+config EGLIBC_MEMUSAGE_DEFAULT_BUFFER_SIZE
+ int "Memory profiling library buffer size"
+ depends on EGLIBC_MEMUSAGE
+ default "32768"
+ 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. 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 EGLIBC_NIS
+ bool "Support for NIS, NIS+, and the special 'compat' services."
+ depends on EGLIBC_INET && 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_NSSWITCH
+ bool "Name service switch (nsswitch) support"
+ 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 EGLIBC_NSSWITCH_FIXED_CONFIG
+ string "Nsswitch fixed config filename"
+ depends on !EGLIBC_NSSWITCH
+ default ""
+ 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 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 EGLIBC_NSSWITCH_FIXED_FUNCTIONS
+ string "Nsswitch fixed functions filename"
+ depends on !EGLIBC_NSSWITCH
+ default ""
+ 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 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.
+
+config EGLIBC_RCMD
+ bool "Support for 'rcmd' and related library functions"
+ depends on 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_RTLD_DEBUG
+ bool "Runtime linker debug print outs"
+ 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_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 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 EGLIBC_SUNRPC
+ bool "Support for the Sun 'RPC' protocol."
+ depends on EGLIBC_INET
+ help
+ This option group includes support for the Sun RPC protocols,
+ including the 'rpcgen' and 'rpcinfo' programs.
+
+config EGLIBC_UTMP
+ bool "Older access functions for 'utmp' login records"
+ 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_UTMPX
+ bool "POSIX access functions for 'utmp' login records"
+ depends on 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_WORDEXP
+ bool "Shell-style word expansion"
+ help
+ This option group includes the 'wordexp' function for
+ performing word expansion in the manner of the shell, and the
+ accompanying 'wordfree' function.
+
+config 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
+ 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 POSIX_REGEXP
+ bool "Regular expressions"
+ 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
+ <regexp.h> header file, 'compile', 'step', and 'advance', is
+ omitted.
+
+config POSIX_REGEXP_GLIBC
+ bool "Regular expressions from GLIBC"
+ depends on 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 POSIX_WIDE_CHAR_DEVICE_IO
+ bool "Input and output functions for wide characters"
+ depends on 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.
+
+
+# This helps Emacs users browse this file using the page motion commands
+# and commands like 'pages-directory'.
+# Local Variables:
+# page-delimiter: "^config\\s-"
+# End:
Index: git/option-groups.mak
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ git/option-groups.mak 2014-08-27 07:26:51.652070587 +0000
@@ -0,0 +1,41 @@
+# Setup file for subdirectory Makefiles that define EGLIBC option groups.
+
+# EGLIBC shouldn't need to override this. However, the
+# cross-build-friendly localedef includes this makefile to get option
+# group variable definitions; it uses a single build tree for all the
+# multilibs, and needs to be able to specify a different option group
+# configuration file for each multilib.
+option_group_config_file ?= $(objdir)/option-groups.config
+
+# Read the default settings for all options.
+# We're included before ../Rules, so we can't assume $(..) is set.
+include $(firstword $(..) ../)option-groups.defaults
+
+# Read the developer's option group selections, overriding the
+# defaults from option-groups.defaults.
+-include $(option_group_config_file)
+
+# $(call option-disabled, VAR) is 'y' if VAR is not 'y', or 'n' otherwise.
+# VAR should be a variable name, not a variable reference; this is
+# less general, but more terse for the intended use.
+# You can use it to add a file to a list if an option group is
+# disabled, like this:
+# routines-$(call option-disabled, OPTION_POSIX_C_LANG_WIDE_CHAR) += ...
+define option-disabled
+$(firstword $(subst y,n,$(filter y,$($(strip $(1))))) y)
+endef
+
+# Establish 'routines-y', etc. as simply-expanded variables.
+aux-y :=
+extra-libs-others-y :=
+extra-libs-y :=
+extra-objs-y :=
+install-bin-y :=
+install-others-y :=
+install-sbin-y :=
+others-y :=
+others-pie-y :=
+routines-y :=
+test-srcs-y :=
+tests-y :=
+xtests-y :=
Index: git/option-groups.defaults
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ git/option-groups.defaults 2014-08-27 07:24:41.652070587 +0000
@@ -0,0 +1,47 @@
+# This file sets default values for all option group variables
+# mentioned in option-groups.def; see that file for a description of
+# each option group.
+#
+# Subdirectory makefiles include this file before including the user's
+# settings from option-groups.config at the top of the build tree;
+# that file need only refer to those options whose default settings
+# are to be changed.
+#
+# By default, all option groups are enabled.
+OPTION_EGLIBC_ADVANCED_INET6 = y
+OPTION_EGLIBC_BACKTRACE = y
+OPTION_EGLIBC_BIG_MACROS = y
+OPTION_EGLIBC_BSD = y
+OPTION_EGLIBC_CXX_TESTS = y
+OPTION_EGLIBC_CATGETS = y
+OPTION_EGLIBC_CHARSETS = y
+OPTION_EGLIBC_CRYPT = y
+OPTION_EGLIBC_CRYPT_UFC = y
+OPTION_EGLIBC_DB_ALIASES = y
+OPTION_EGLIBC_ENVZ = y
+OPTION_EGLIBC_FCVT = y
+OPTION_EGLIBC_FMTMSG = y
+OPTION_EGLIBC_FSTAB = y
+OPTION_EGLIBC_FTRAVERSE = y
+OPTION_EGLIBC_GETLOGIN = y
+OPTION_EGLIBC_IDN = y
+OPTION_EGLIBC_INET = y
+OPTION_EGLIBC_INET_ANL = y
+OPTION_EGLIBC_LIBM = y
+OPTION_EGLIBC_LOCALES = y
+OPTION_EGLIBC_LOCALE_CODE = y
+OPTION_EGLIBC_MEMUSAGE = y
+OPTION_EGLIBC_NIS = y
+OPTION_EGLIBC_NSSWITCH = y
+OPTION_EGLIBC_RCMD = y
+OPTION_EGLIBC_RTLD_DEBUG = y
+OPTION_EGLIBC_SPAWN = y
+OPTION_EGLIBC_STREAMS = y
+OPTION_EGLIBC_SUNRPC = y
+OPTION_EGLIBC_UTMP = y
+OPTION_EGLIBC_UTMPX = y
+OPTION_EGLIBC_WORDEXP = y
+OPTION_POSIX_C_LANG_WIDE_CHAR = y
+OPTION_POSIX_REGEXP = y
+OPTION_POSIX_REGEXP_GLIBC = y
+OPTION_POSIX_WIDE_CHAR_DEVICE_IO = y
Index: git/Makefile
===================================================================
--- git.orig/Makefile 2014-08-27 07:24:37.540070587 +0000
+++ git/Makefile 2014-08-27 07:24:41.656070587 +0000
@@ -24,6 +24,7 @@
include Makeconfig
+include options-config/Makefile
# This is the default target; it makes everything except the tests.
.PHONY: all
Index: git/EGLIBC.option-groups
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ git/EGLIBC.option-groups 2014-08-27 07:24:41.656070587 +0000
@@ -0,0 +1,122 @@
+ -*- mode: text -*-
+
+ The EGLIBC Component Configuration System
+ Jim Blandy <jimb@codesourcery.com>
+
+Introduction
+
+The GNU C library (GLIBC) provides a broad range of functionality,
+ranging from internationalization support to transcendental
+mathematical functions. Its website boasts that "nearly all known and
+useful functions from any other C library are available." This
+exhaustive approach has been one of GLIBC's strengths on desktop and
+server systems, but it has also given GLIBC a large footprint, both in
+memory and on disk, making it a challenge to use in embedded systems
+with limited resources.
+
+The Embedded GNU C library (EGLIBC) is a variant of the GNU C library
+designed to work well on embedded systems. In particular, EGLIBC's
+component configuration system allows embedded developers to build
+customized versions of the library that include only the features
+their application uses, reducing its space requirements.
+
+EGLIBC's component configuration system categorizes the library's
+functions into "option groups", and allows you to include or exclude
+option groups individually. Some option groups depend on others;
+EGLIBC tracks these relationships, and ensures that the selected
+configuration yields a functioning library.
+
+
+Consistent and Predictable Behavior
+
+A flexible configuration system is a mixed blessing: if the options
+offered are poorly designed, it can be hard to see which choices will
+have the desired effects, and choices with obscure consequences can
+make debugging difficult. EGLIBC's configuration follows some general
+principles to reduce these risks:
+
+- EGLIBC has a single default configuration for each target
+ architecture.
+
+- In the default configuration, all option groups are enabled, and
+ EGLIBC is upwardly API- and ABI-compatible with GLIBC.
+
+- As much as possible, configurations only affect what functions are
+ present, not how they behave. If the system works with an option
+ group disabled, it will still work with it enabled.
+
+- As much as possible, configurations only select option groups ---
+ they do not describe characteristics of the target architecture.
+
+These rules mean that you have a simple debugging strategy available
+if you suspect that your EGLIBC configuration might be the source of a
+problem: fall back to the default configuration, re-test, and then
+disable option groups one by one, until the problem reappears.
+
+
+The Option Groups
+
+To see the current full list of implemented option groups, refer to the
+file 'option-groups.def' at the top of the source tree, or run
+'make menuconfig' from the top-level build directory.
+
+The POSIX.1-2001 specification includes a suggested partition of all
+the functions in the POSIX C API into option groups: math functions
+like 'sin' and 'cos'; networking functions like 'socket' and
+'connect'; and so on. EGLIBC could use this partitioning as the basis
+for future option groups.
+
+
+Implementation
+
+The EGLIBC component configuration system resembles the approach used
+by the Linux kernel to select device drivers, network protocols, and
+other features. A file named 'option-groups.config' in the top-level
+build directory contains assignments to Make variables, each of which
+enables or disables a particular option group. If the variable's
+value is set to 'y', then the option group is enabled; if it set to
+anything else, the option group is omitted. The file
+'option-groups.defaults', at the top of the source tree, establishes
+default values for all variables; all option groups are enabled by
+default.
+
+For example, the following 'option-groups.config' would omit locale
+data, but include mathematical functions, and everything else:
+
+ OPTION_EGLIBC_LOCALES = n
+ OPTION_EGLIBC_LIBM = y
+
+Like the Linux kernel, EGLIBC supports a similar set of '*config' make
+targets to make it easier to create 'option-groups.config', with all
+dependencies between option groups automatically satisfied. Run
+'make help' to see the list of supported make config targets. For
+example, 'make menuconfig' will update the current config utilising a
+menu based program.
+
+The option group names and their type (boolean, int, hex, string), help
+description, and dependencies with other option groups, are described by
+'option-groups.def' at the top of the source tree, analogous to the
+'Kconfig' files in the Linux kernel.
+
+In general, each option group variable controls whether a given set of
+object files in EGLIBC is compiled and included in the final
+libraries, or omitted from the build.
+
+Each subdirectory's Makefile categorizes its routines, libraries, and
+executables by option group. For example, EGLIBC's 'math/Makefile'
+places the 'libm' library in the OPTION_EGLIBC_LIBM group as follows:
+
+ extra-libs-$(OPTION_EGLIBC_LIBM) := libm
+
+Finally, common code in 'Makerules' cites the value of the variable
+'extra-libs-y', selecting only those libraries that belong to enabled
+option groups to be built.
+
+
+Current Status and Future Directions
+
+The EGLIBC component configuration system described here is still
+under development.
+
+We have used the system to subset some portions of EGLIBC's
+Index: libc/configure.ac
Index: git/configure.ac
===================================================================
--- git.orig/configure.ac 2014-08-27 07:24:41.196070587 +0000
+++ git/configure.ac 2014-08-27 07:24:41.656070587 +0000
@@ -127,6 +127,16 @@
[sysheaders=''])
AC_SUBST(sysheaders)
+AC_ARG_WITH([kconfig],
+ AC_HELP_STRING([--with-kconfig=PATH],
+ [location of kconfig tools to use (from Linux
+ kernel builds) to re-use for configuring EGLIBC
+ option groups]),
+ [KCONFIG_TOOLS=$withval],
+ [KCONFIG_TOOLS=''])
+AC_SUBST(KCONFIG_TOOLS)
+
+
AC_SUBST(use_default_link)
AC_ARG_WITH([default-link],
AC_HELP_STRING([--with-default-link],
Index: git/config.make.in
===================================================================
--- git.orig/config.make.in 2014-08-27 07:24:37.560070587 +0000
+++ git/config.make.in 2014-08-27 07:24:41.656070587 +0000
@@ -46,6 +46,8 @@
c++-sysincludes = @CXX_SYSINCLUDES@
all-warnings = @all_warnings@
+kconfig_tools = @KCONFIG_TOOLS@
+
have-z-combreloc = @libc_cv_z_combreloc@
have-z-execstack = @libc_cv_z_execstack@
have-Bgroup = @libc_cv_Bgroup@
Index: git/configure
===================================================================
--- git.orig/configure 2014-08-27 07:24:41.192070587 +0000
+++ git/configure 2014-08-27 07:24:41.660070587 +0000
@@ -619,6 +619,7 @@
PERL
BASH_SHELL
libc_cv_gcc_static_libgcc
+KCONFIG_TOOLS
CXX_SYSINCLUDES
SYSINCLUDES
AUTOCONF
@@ -733,6 +734,7 @@
with_binutils
with_selinux
with_headers
+with_kconfig
with_default_link
enable_sanity_checks
enable_shared
@@ -1437,6 +1439,9 @@
--with-selinux if building with SELinux support
--with-headers=PATH location of system headers to use (for example
/usr/src/linux/include) [default=compiler default]
+ --with-kconfig=PATH location of kconfig tools to use (from Linux kernel
+ builds) to re-use for configuring EGLIBC option
+ groups
--with-default-link do not use explicit linker scripts
--with-cpu=CPU select code for CPU variant
@@ -3400,6 +3405,14 @@
+# Check whether --with-kconfig was given.
+if test "${with_kconfig+set}" = set; then
+ withval=$with_kconfig; KCONFIG_TOOLS=$withval
+else
+ KCONFIG_TOOLS=''
+fi
+
+
# Check whether --with-default-link was given.
if test "${with_default_link+set}" = set; then :
Index: git/options-config/Makefile
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ git/options-config/Makefile 2014-08-27 07:24:41.652070587 +0000
@@ -0,0 +1,55 @@
+# ===========================================================================
+# EGLIBC option-groups configuration targets
+# These targets are included from top-level makefile
+
+ifneq ($(kconfig_tools),)
+ifneq (no,$(PERL))
+
+ocdir := options-config
+
+OconfigDefaults := option-groups.defaults
+OconfigDefaults_tmp := $(common-objpfx).tmp.defconfig
+OconfigDef := option-groups.def
+Oconfig := $(common-objpfx)option-groups.config
+Oconfig_tmp := $(common-objpfx).tmp.config
+
+conf := $(kconfig_tools)/conf
+mconf := $(kconfig_tools)/mconf
+
+preproc := $(PERL) $(ocdir)/config-preproc.pl
+postproc := $(PERL) $(ocdir)/config-postproc.pl
+
+PHONY += defconfig config menuconfig
+
+defconfig: $(conf) $(OconfigDefaults) $(OconfigDef)
+ rm -f $(OconfigDefaults_tmp)
+ rm -f $(Oconfig_tmp)
+ $(preproc) $(OconfigDefaults) > $(OconfigDefaults_tmp)
+ KCONFIG_CONFIG=$(Oconfig_tmp) $< --defconfig=$(OconfigDefaults_tmp) \
+ $(OconfigDef)
+ $(postproc) $(OconfigDefaults) $(Oconfig_tmp) > $(Oconfig)
+ rm $(Oconfig_tmp)
+ rm $(OconfigDefaults_tmp)
+
+config: $(conf) $(OconfigDefaults) $(OconfigDef)
+ rm -f $(Oconfig_tmp)
+ $(preproc) $(wildcard $(Oconfig)) > $(Oconfig_tmp)
+ KCONFIG_CONFIG=$(Oconfig_tmp) $< --oldaskconfig $(OconfigDef)
+ $(postproc) $(OconfigDefaults) $(Oconfig_tmp) > $(Oconfig)
+ rm $(Oconfig_tmp)
+
+menuconfig: $(mconf) $(OconfigDefaults) $(OconfigDef)
+ rm -f $(Oconfig_tmp)
+ $(preproc) $(wildcard $(Oconfig)) > $(Oconfig_tmp)
+ KCONFIG_CONFIG=$(Oconfig_tmp) $< $(OconfigDef)
+ $(postproc) $(OconfigDefaults) $(Oconfig_tmp) > $(Oconfig)
+ rm $(Oconfig_tmp)
+
+# Help text used by make help
+help:
+ @echo ' defconfig - New config with default from default config'
+ @echo ' config - Update current config utilising a line-oriented program'
+ @echo ' menuconfig - Update current config utilising a menu based program'
+
+endif
+endif
Index: git/options-config/config-postproc.pl
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ git/options-config/config-postproc.pl 2014-08-27 07:24:41.652070587 +0000
@@ -0,0 +1,58 @@
+#!/usr/bin/perl
+
+$usage = "usage: $0 <default config file> <config file>\n";
+
+die "$usage" unless @ARGV;
+$defaults = shift @ARGV;
+die "$usage" unless @ARGV;
+die "Could not open $ARGV[0]" unless -T $ARGV[0];
+
+sub yank {
+ @option = grep(!($_ =~ /$_[0]\s*=/), @option);
+}
+
+open(DEFAULTS, $defaults) || die "Could not open $defaults\n";
+
+# get the full list of available options using the default config file
+$i = 0;
+while (<DEFAULTS>) {
+ if (/^\s*OPTION_(\w+\s*=.*$)/) {
+ $option[$i++] = $1;
+ }
+}
+
+# now go through the config file, making the necessary changes
+while (<>) {
+ if (/Linux Kernel Configuration/) {
+ # change title
+ s/Linux Kernel/Option Groups/;
+ print;
+ } elsif (/^\s*CONFIG_(\w+)\s*=/) {
+ # this is an explicit option set line, change CONFIG_ to OPTION_
+ # before printing and remove this option from option list
+ $opt = $1;
+ yank($opt);
+ s/CONFIG_/OPTION_/g;
+ print;
+ } elsif (/^\s*#\s+CONFIG_(\w+) is not set/) {
+ # this is a comment line for an unset boolean option, change CONFIG_
+ # to OPTION_, remove this option from option list, and convert to
+ # explicit OPTION_FOO=n
+ $opt = $1;
+ yank($opt);
+ s/CONFIG_/OPTION_/g;
+ print "OPTION_$opt=n\n";
+ } else {
+ print;
+ }
+}
+
+# any boolean options left in @options, are options that were not mentioned in
+# the config file, and implicitly that means the option must be set =n,
+# so do that here.
+foreach $opt (@option) {
+ if ($opt =~ /=\s*[yn]/) {
+ $opt =~ s/=\s*[yn]/=n/;
+ print "OPTION_$opt\n";
+ }
+}
Index: git/options-config/config-preproc.pl
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ git/options-config/config-preproc.pl 2014-08-27 07:24:41.652070587 +0000
@@ -0,0 +1,8 @@
+#!/usr/bin/perl
+
+if (@ARGV) {
+ while (<>) {
+ s/OPTION_/CONFIG_/g;
+ print;
+ }
+}
Index: git/scripts/option-groups.awk
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ git/scripts/option-groups.awk 2014-08-27 07:26:51.652070587 +0000
@@ -0,0 +1,63 @@
+# option-groups.awk --- generate option group header file
+# Given input files containing makefile-style assignments to variables,
+# print out a header file that #defines an appropriate preprocessor
+# symbol for each variable left set to 'y'.
+
+BEGIN { FS="=" }
+
+# Trim spaces.
+{ gsub (/[[:blank:]]/, "") }
+
+# Skip comments.
+/^#/ { next }
+
+# Process assignments.
+NF == 2 {
+ vars[$1] = $2
+}
+
+# Print final values.
+END {
+ print "/* This file is automatically generated by scripts/option-groups.awk"
+ print " in the EGLIBC source tree."
+ print ""
+ print " It defines macros that indicate which EGLIBC option groups were"
+ print " configured in 'option-groups.config' when this C library was"
+ print " built. For each option group named OPTION_foo, it #defines"
+ print " __OPTION_foo to be 1 if the group is enabled, or #defines that"
+ print " symbol to be 0 if the group is disabled. */"
+ print ""
+ print "#ifndef __GNU_OPTION_GROUPS_H"
+ print "#define __GNU_OPTION_GROUPS_H"
+ print ""
+
+ # Produce a sorted list of variable names.
+ i=0
+ for (var in vars)
+ names[i++] = var
+ n = asort (names)
+
+ for (i = 1; i <= n; i++)
+ {
+ var = names[i]
+ if (var ~ /^OPTION_/)
+ {
+ if (vars[var] == "y")
+ print "#define __" var " 1"
+ else if (vars[var] == "n")
+ print "#define __" var " 0"
+ else if (vars[var] ~ /^[0-9]+/ ||
+ vars[var] ~ /^0x[0-9aAbBcCdDeEfF]+/ ||
+ vars[var] ~ /^\"/)
+ print "#define __" var " " vars[var]
+ else
+ print "/* #undef __" var " */"
+ # Ignore variables that don't have boolean, int, hex, or
+ # string values. Ideally, this would be driven by the types
+ # given in option-groups.def.
+ }
+ }
+
+ print ""
+ print "#endif /* __GNU_OPTION_GROUPS_H */"
+}
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