Squashed 'yocto-poky/' content from commit ea562de
git-subtree-dir: yocto-poky
git-subtree-split: ea562de57590c966cd5a75fda8defecd397e6436
diff --git a/meta/recipes-core/glibc/glibc/0019-eglibc-Bring-Eglibc-option-group-infrastructure-to-g.patch b/meta/recipes-core/glibc/glibc/0019-eglibc-Bring-Eglibc-option-group-infrastructure-to-g.patch
new file mode 100644
index 0000000..dcb80f9
--- /dev/null
+++ b/meta/recipes-core/glibc/glibc/0019-eglibc-Bring-Eglibc-option-group-infrastructure-to-g.patch
@@ -0,0 +1,1436 @@
+From aa7c5fe86d04584a9aed4dc40ba856c65a1ef9c4 Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Wed, 18 Mar 2015 00:45:18 +0000
+Subject: [PATCH 19/27] eglibc: Bring Eglibc option group infrastructure to
+ glibc
+
+Upstream-Status: Pending
+
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+ EGLIBC.option-groups | 122 ++++++
+ Makefile | 1 +
+ config.make.in | 2 +
+ configure | 13 +
+ configure.ac | 10 +
+ option-groups.def | 868 ++++++++++++++++++++++++++++++++++++++
+ option-groups.defaults | 47 +++
+ option-groups.mak | 41 ++
+ options-config/Makefile | 55 +++
+ options-config/config-postproc.pl | 58 +++
+ options-config/config-preproc.pl | 8 +
+ scripts/option-groups.awk | 63 +++
+ 12 files changed, 1288 insertions(+)
+ create mode 100644 EGLIBC.option-groups
+ create mode 100644 option-groups.def
+ create mode 100644 option-groups.defaults
+ create mode 100644 option-groups.mak
+ create mode 100644 options-config/Makefile
+ create mode 100644 options-config/config-postproc.pl
+ create mode 100644 options-config/config-preproc.pl
+ create mode 100644 scripts/option-groups.awk
+
+diff --git a/EGLIBC.option-groups b/EGLIBC.option-groups
+new file mode 100644
+index 0000000..6a50b8d
+--- /dev/null
++++ b/EGLIBC.option-groups
+@@ -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
+diff --git a/Makefile b/Makefile
+index 658ccfa..f906391 100644
+--- a/Makefile
++++ b/Makefile
+@@ -24,6 +24,7 @@ endif
+
+ include Makeconfig
+
++include options-config/Makefile
+
+ # This is the default target; it makes everything except the tests.
+ .PHONY: all
+diff --git a/config.make.in b/config.make.in
+index a9f5696..294f8d1 100644
+--- a/config.make.in
++++ b/config.make.in
+@@ -47,6 +47,8 @@ c++-sysincludes = @CXX_SYSINCLUDES@
+ all-warnings = @all_warnings@
+ enable-werror = @enable_werror@
+
++kconfig_tools = @KCONFIG_TOOLS@
++
+ have-z-combreloc = @libc_cv_z_combreloc@
+ have-z-execstack = @libc_cv_z_execstack@
+ have-Bgroup = @libc_cv_Bgroup@
+diff --git a/configure b/configure
+index 7d7299a..4116404 100755
+--- a/configure
++++ b/configure
+@@ -641,6 +641,7 @@ INSTALL_INFO
+ PERL
+ BASH_SHELL
+ libc_cv_gcc_static_libgcc
++KCONFIG_TOOLS
+ CXX_SYSINCLUDES
+ SYSINCLUDES
+ AUTOCONF
+@@ -755,6 +756,7 @@ with_fp
+ with_binutils
+ with_selinux
+ with_headers
++with_kconfig
+ with_default_link
+ enable_sanity_checks
+ enable_shared
+@@ -1459,6 +1461,9 @@ Optional Packages:
+ --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
+
+@@ -3517,6 +3522,14 @@ fi
+
+
+
++# 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 "${with_default_link+set}" = set; then :
+diff --git a/configure.ac b/configure.ac
+index a467a69..fc0ed4d 100644
+--- a/configure.ac
++++ b/configure.ac
+@@ -136,6 +136,16 @@ AC_ARG_WITH([headers],
+ [sysheaders=''])
+ AC_SUBST(sysheaders)
+
++AC_ARG_WITH([kconfig],
++ AC_HELP_STRING([--with-kconfig=PATH],
++ [location of kconfig tools to use (from Linux
++ kernel builds) to re-use for configuring EGLIBC
++ option groups]),
++ [KCONFIG_TOOLS=$withval],
++ [KCONFIG_TOOLS=''])
++AC_SUBST(KCONFIG_TOOLS)
++
++
+ AC_SUBST(use_default_link)
+ AC_ARG_WITH([default-link],
+ AC_HELP_STRING([--with-default-link],
+diff --git a/option-groups.def b/option-groups.def
+new file mode 100644
+index 0000000..6aebd94
+--- /dev/null
++++ b/option-groups.def
+@@ -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:
+diff --git a/option-groups.defaults b/option-groups.defaults
+new file mode 100644
+index 0000000..8141201
+--- /dev/null
++++ b/option-groups.defaults
+@@ -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
+diff --git a/option-groups.mak b/option-groups.mak
+new file mode 100644
+index 0000000..f83e0c1
+--- /dev/null
++++ b/option-groups.mak
+@@ -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 $(1))))) y)
++endef
++
++# Establish 'routines-y', etc. as simply-expanded variables.
++aux-y :=
++extra-libs-others-y :=
++extra-libs-y :=
++extra-objs-y :=
++install-bin-y :=
++install-others-y :=
++install-sbin-y :=
++others-y :=
++others-pie-y :=
++routines-y :=
++test-srcs-y :=
++tests-y :=
++xtests-y :=
+diff --git a/options-config/Makefile b/options-config/Makefile
+new file mode 100644
+index 0000000..db00708
+--- /dev/null
++++ b/options-config/Makefile
+@@ -0,0 +1,55 @@
++# ===========================================================================
++# EGLIBC option-groups configuration targets
++# These targets are included from top-level makefile
++
++ifneq ($(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 $(Oconfig_tmp)
++
++# Help text used by make help
++help:
++ @echo ' defconfig - New config with default from default config'
++ @echo ' config - Update current config utilising a line-oriented program'
++ @echo ' menuconfig - Update current config utilising a menu based program'
++
++endif
++endif
+diff --git a/options-config/config-postproc.pl b/options-config/config-postproc.pl
+new file mode 100644
+index 0000000..4dd1c63
+--- /dev/null
++++ b/options-config/config-postproc.pl
+@@ -0,0 +1,58 @@
++#!/usr/bin/perl
++
++$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";
++ }
++}
+diff --git a/options-config/config-preproc.pl b/options-config/config-preproc.pl
+new file mode 100644
+index 0000000..b83bb85
+--- /dev/null
++++ b/options-config/config-preproc.pl
+@@ -0,0 +1,8 @@
++#!/usr/bin/perl
++
++if (@ARGV) {
++ while (<>) {
++ s/OPTION_/CONFIG_/g;
++ print;
++ }
++}
+diff --git a/scripts/option-groups.awk b/scripts/option-groups.awk
+new file mode 100644
+index 0000000..533af0c
+--- /dev/null
++++ b/scripts/option-groups.awk
+@@ -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 */"
++}
+--
+2.1.4
+