NEWS

   1 GNU C Library NEWS -- history of user-visible changes.  2005-3-19
   2 Copyright (C) 1992-2004, 2005 Free Software Foundation, Inc.
   3 See the end for copying conditions.
   4
   5 Please send GNU C library bug reports via <http://sources.redhat.com/bugzilla/>
   6 using `glibc' in the "product" field.
   7 \f
   8 Version 2.4
   9
  10 * More overflow detection functions.
  11
  12 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
  13   IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
  14
  15 * It is now possible to install audit libraries for the dynamic linker using
  16   LD_AUDIT.  Implemented by Ulrich Drepper.
  17 \f
  18 Version 2.3.4
  19
  20 * Support for RFC 3678.  Real implementations exist only for Linux so far.
  21   Implemented by Ulrich Drepper.
  22
  23 * nscd can now cache entries persistently.  Expiring entries are reloaded.
  24   For speedups the cache can be shared in memory with client processes.
  25   Implemented by Ulrich Drepper.
  26
  27 * nscd can now perform SELinux checks.
  28   Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
  29
  30 * getaddrinfo queries are now cached.  Canonical name lookup is performed
  31   efficiently.
  32   Implemented by Ulrich Drepper.
  33
  34 * The nothrow function attribute is used when headers are used by gcc when
  35   compiling C code.  This can avoid significant amounts of exception
  36   handling data.
  37
  38 * The malloc functions perform more error checking and are stricter when
  39   it comes to reacting on errors.  The default action is to terminate
  40   the process after showing an error message.  Implemented by Ulrich Drepper.
  41
  42 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
  43   lookups anymore unless explicitly requested.  Implemented by Ulrich Drepper.
  44
  45 * Namespaces in ld.so are implemented.  DSOs can be loaded in separate
  46   namespaces using the new function dlmopen().  This feature is of course,
  47   like most other dynamic loading functionality, not available in statically
  48   linked applications.  Implemented by Ulrich Drepper.
  49
  50 * Low-overhead boundary checking variants of string and some stdio functions
  51   were added.  These are to be used in conjunction with a gcc patch by
  52   Jakub Jelinek which adds calls to these functions if possible.
  53   Implemented by Jakub Jelinek and Ulrich Drepper.
  54
  55 * Old code for several operating systems and machine architectures that
  56   have not been in working condition in a long time have been removed from
  57   the main source tree maintained by the GNU C Library's maintainers.
  58   These files are now reside in the separate `ports' source module
  59   that is usable as an add-on when building the library.
  60 \f
  61 Version 2.3.3
  62
  63 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
  64   interrogate the dynamic linker, compatible with the Solaris interface.
  65
  66 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
  67   implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
  68
  69 * getifaddrs now uses the netlink interface on Linux to get its information.
  70   Implemented by Thorsten Kukuk.
  71
  72 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
  73   Implemented by Ulrich Drepper.
  74
  75 * support for non-executable stacks on x86 has been added.  Changes mostly
  76   by Roland McGrath.
  77
  78 * regex is now much faster for multibyte locales.  Changes by Jakub Jelinek
  79   and Ulrich Drepper.
  80
  81 * getaddrinfo now performs destination address selection according to
  82   RFC 3484.
  83 \f
  84 Version 2.3.2
  85
  86 * Thread-safe interfaces for many functions that access locale data
  87   were added in version 2.3, but these features were omitted from NEWS.
  88   Many functions have variants with an `_l' suffix that take a `locale_t'
  89   object as a parameter rather than consulting the current locale.
  90   The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
  91   create and maintain `locale_t' objects.  Additionally, the new function
  92   `uselocale' sets "the current locale" (as used by functions not so
  93   parameterized) set for an individual thread.  These features were added
  94   in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
  95
  96 * The functions getresuid, getresgid, setresuid, and setresgid, which
  97   have long been available on Linux, are now declared in <unistd.h>
  98   and are now also available on the Hurd.
  99
 100 * ELF thread-local storage support (TLS) now works on x86-64.
 101
 102 * The new dynamic string token $LIB is expanded in shared library names.
 103   This normally expands to lib, but on some 64-bit platforms to lib64 instead.
 104
 105 * Aldy Hernandez contributed complete software floating point support for
 106   PowerPC machines with no FPU.
 107
 108 * fexecve is implemented on Linux.
 109
 110 * The `btowc' function should work at least twice as fast due to
 111   specialized callbacks in the iconv modules.  Implemented by Bruno Haible.
 112
 113 * With approriate thread add-ons cancelable functions are now implemented
 114   in libc.so as well.  No need to call the function in libpthread.  This
 115   change allowed to finally disable the incorrect and expensive handling
 116   of weak definition in ld.so.
 117
 118 * Yet more PLT entries in libc.so have been removed.  We finally arrived
 119   at the bare minimum.  Startup times improved appropriately.
 120
 121 * Support for the new Linux/x86 system call interface was added.  The
 122   AT_SYSINFO auxiliary vector entry is recognized and handled.
 123 \f
 124 Version 2.3
 125
 126 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
 127   charsets.
 128
 129 * iconv (the program and the interface) now accepts empty names (excluding
 130   options like //TRANSLIT) to mean "use charset of current locale".
 131
 132 * localedef can now transliterate characters in strings which are not in
 133   the provided charmap.  The information from the input locale is used.
 134
 135 * Prelinking support was added for ELF targets.  This requires additional
 136   tools and recent versions of the GNU binutils.  Contributed by Jakub Jelinek.
 137
 138 * Read-only stdio streams now use mmap to speed up operation by eliminating
 139   copying and buffer underflows.  To use add 'm' to the mode string of
 140   the fopen/fdopen/freopen call.  Implemented by Ulrich Drepper.
 141
 142 * The malloc functions were completely rewritten by Wolfram Gloger based
 143   on Doug Lea's malloc-2.7.0.c.
 144
 145 * Isamu Hasegawa contributed a completely new and POSIX-conformant
 146   implementation of regex.
 147
 148 * Bruno Haible upgraded the iconv and locale implementation to support
 149   Unicode 3.2.
 150
 151 * Contents of the LC_* and LANG environment variables in the CEN style are
 152   not recognized anymore.   It never was used.  Change by Ulrich Drepper.
 153
 154 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
 155   thread-local storage (TLS) ABI on some platforms.
 156   Changes by Ulrich Drepper.  SH support by Kaz Kojima.
 157
 158 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
 159   EUC-JISX0213, and TSCII.
 160
 161 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
 162   BSD-compatible interface for getting all network interface addresses.
 163   Implementation for IPv4 by Roland McGrath.
 164
 165 * Loading of locale data is faster due to the introduction of a locale
 166   archive.  Implemented by Roland McGrath and Ulrich Drepper.
 167
 168 * Startup times are significantly reduced by not using exported functions
 169   inside the library itself.  Changes by Jakub Jelinek, Roland McGrath,
 170   and Ulrich Drepper.
 171
 172 * Steven Munroe contributed a port to PowerPC64/Linux.
 173 \f
 174 Version 2.2.6
 175
 176 * The Hurd now uses the GNU libio implementation of stdio rather than the
 177   old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
 178
 179 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
 180   with the same behavior as the Linux system call of the same name.
 181 \f
 182 Version 2.2.5
 183
 184 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
 185   128-bit long double format.
 186
 187 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
 188   IBM1161, and IBM1162 charsets.
 189
 190 * Andreas Jaeger contributed a port to x86-64/Linux.
 191
 192 * Peter Bruin contributed a port to PowerPC/Hurd.
 193
 194 * libc functions using I/O streams now can handle wide-oriented streams
 195   as well.
 196
 197 * optimizations in the dynamic linker.  Binaries created by recent binutils
 198   versions start up quicker due to reduced time spent on relocations.
 199
 200 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
 201 \f
 202 Version 2.2.4
 203
 204 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
 205   asinh, atanh, j0 for the 128-bit long double format.
 206
 207 * Bruno Haible updated all the code handling Unicode in some form to
 208   support Unicode 3.1.
 209
 210 * Speed of regex for single-byte locales is back to previous levels.
 211   Patch by Isamu Hasegawa.
 212
 213 * Alpha, SPARC, and IA-64 now also using floating stacks.
 214
 215 * Startup time of internationalized applications greatly improved through
 216   iconv cache.  Use iconvconfig to generate the cache file.
 217   Contributed by Ulrich Drepper.
 218
 219 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
 220   severe performance problems.  Patch by David Mosberger.
 221
 222 * The Hurd port got a lot more functionality like AIO, various stdio
 223   extensions, etc.  Mainly done by Roland McGrath.
 224
 225 * mtrace can now lookup symbols in shared libraries.
 226 \f
 227 Version 2.2.3
 228
 229 * Intel's IA-64 math library is largely integrated.  It provides fast and
 230   accurate implementatations for most basic and standard math functions
 231   in float, double, and long double format.
 232
 233 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
 234   and asin for the 96-bit long double format and asin, log, tan for the
 235   128-bit long double format.
 236
 237 * The beginning of a last-bit accurate math library by IBM Haifa were added.
 238   The basic double functions exist today.  Contributed by Abraham Ziv
 239   <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
 240   <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
 241
 242 * An asynchronous name lookup library was added.  The interface is designed
 243   after POSIX AIO.  The proposal was circulated beforehand to get comments.
 244   No negative ones came in.  Implemented by Ulrich Drepper.
 245
 246 * Port to S390/64bit contributed by Martin Schwidefsky
 247   <schwidefsky@de.ibm.com>.
 248
 249 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
 250   of functions for Linux/IA-64.
 251
 252 * The RPC code is now thread safe.  Threads can now use the same service
 253   of different services at the same time.  Patch by Eric Norum
 254   <eric.norum@usask.ca> with some help by Ulrich Drepper.
 255
 256 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
 257   family of functions for Linux/S390.
 258
 259 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
 260   of functions for Linux/x86.
 261
 262 * Port to Linux/CRIS contributed by Axis Communications.
 263 \f
 264 Version 2.2.2
 265
 266 * Lots of headers were cleaned up.  Using the tool in the conform/ subdir
 267   we can now check for namespace violations and missing declarations.  The
 268   result is that almost all headers are now Unix-compliant (as defined in
 269   the upcoming XPG6).  The negative side is that some programs might need
 270   corrections, too, if they depend on the incorrect form of the headers in
 271   previous versions which defined too many symbols and included too many
 272   other headers.
 273
 274 * regex now handles multibyte character sets correctly.
 275   Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
 276
 277 * iconv (the program) does now conform to the upcoming XPG6 and handles
 278   charmaps.  Instead of the charset names the path of charmaps can be
 279   provided and the conversion happens based on this data.
 280   Contributed by Ulrich Drepper.
 281
 282 * The locale program now provides detailed information about the installed
 283   locales.  While
 284
 285     locale -a
 286
 287   only lists the names of the supported locales
 288
 289     locale -a --verbose
 290
 291   provides details such as country, language, and codeset name.
 292   Contributed by Ulrich Drepper.
 293 \f
 294 Version 2.2.1
 295
 296 * The gencat program now parses the input file according to the charset
 297   selected by the LC_CTYPE category.  This is important for stateful
 298   character sets.  To make generating catalogs easier there is a way
 299   to overwrite the charset selected by the locale: before the first
 300   message or $ quote line the catalog can contain a line like
 301
 302     $ codeset=ISO-8859-2
 303
 304   to select the charset (ISO-8859-2 in this case).
 305
 306   Implemented by Shinya Hanataka and Ulrich Drepper.
 307
 308 * New codeset conversion modules: IBM-922  (Estonia PC codeset),
 309   IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
 310   Contributed by Masahide Washizawa <washi@jp.ibm.com>.
 311
 312 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
 313   <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
 314
 315 * The LANGUAGE environment variable is now ignored unless the locale is
 316   changed from the default "C" locale.
 317
 318 * The usual bug fixes.
 319 \f
 320 Version 2.2
 321
 322 * Greg McGary added runtime support for bounds checking using gcc's
 323   new -fbounded-pointers option.  ix86 target is complete.  PowerPC
 324   is in progress.
 325
 326 * Thorsten Kukuk added secure mode support to nscd.
 327
 328 * The Berkeley db libraries have been removed.
 329
 330   Related, the nss_db module is now in a separate package since it
 331   obviously requires a database library being available.
 332
 333 * Wide character I/O streams implemented by Ulrich Drepper.
 334
 335 * Functions from the extended socket API added by Ulrich Drepper.
 336
 337 * Functions feenableexcept and fedisableexcept to control the
 338   behaviour of individual exceptions have been added by Andreas Jaeger.
 339
 340 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
 341
 342 * The resolver code has been updated from bind 8.2.3-T5B which supports
 343   threads.  The integration was done by Andreas Jaeger, Adam D. Bradley,
 344   and Mark Kettenis.
 345
 346   This change could in some situations effect backward compatibility.  Since
 347   now `_res' is a thread-local instead of a global variable, modifying it
 348   in one thread does not have any effect in other threads.
 349
 350   The resolver library was also extended to allow IPv6 as the transport
 351   protocol for the requests.  This work was done by Stig Venaas.
 352
 353 * Compatibility code for K&R C compilers has been removed from the
 354   header files.  A ISO C compiler is needed to use the library
 355   (conforming to either C89 or C99 standard).
 356
 357 * Complete rewrite of the localedef program to support multibyte character
 358   sets.  Implement handling of ISO 14651 and ISO 14652.  Rewrite strcoll,
 359   strxfrm, wcscoll, and wcsxfrm functions.  Make isw*() functions work.
 360   Implemented by Ulrich Drepper.
 361
 362   Bruno Haible significantly improved the generation and use of the data
 363   structures for the wide character tables.
 364
 365 * Plural handling in gettext implemented by Ulrich Drepper.
 366
 367 * The utmp daemon has been removed.
 368
 369 * The port to MIPS-Linux has been finished by Andreas Jaeger.
 370
 371 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
 372   and Yutaka Niibe.
 373
 374 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
 375
 376 * POSIX barriers implemented by Kaz Kylheku.
 377
 378 * POSIX spawn function family implemented by Ulrich Drepper.
 379
 380 * POSIX spinlocks are now available.
 381
 382 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
 383
 384 * the configure option --enable-kernel=X.Y.Z allows to strip out
 385   compatibility for kernel versions before X.Y.Z.  This is currently only
 386   implemented for Linux.
 387
 388 * the sockaddr_in6 structure changed.  The IPv6 working group added a new
 389   field sin6_scope_id.  This means that all programs using IPv6 should be
 390   recompiled.  Don't expect binary compatibility with previous glibc
 391   versions.
 392
 393 * various conversion modules for IBM character sets contributed by
 394   Masahide Washizawa.
 395
 396 * IA-64 port by Jes Sorensen and HJ Lu.
 397
 398 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 399 Compiling the GNU C Library for Linux/ia64
 400 ******************************************
 401
 402    Please refer to the file INSTALL in the same directory as you found
 403 this file for general information about configuring and compiling
 404 glibc.
 405
 406    For general inquiries about glibc under Linux/ia64 please use the
 407 following mailing list linux-ia64@linuxia64.org or one of the relevant
 408 glibc mailing lists.
 409
 410 Recommended Tools for Compilation
 411 =================================
 412
 413    In order for glibc-2.2 to build correctly on the ia64 you need at
 414 least the following versions of the GNU tools (the :
 415
 416    * The Cygnus toolchain snapshot for the ia64 as of August 4
 417      including the provided set of patches.  It is however recommend
 418      you use the October 24 toolchain snapshot or a more recent version.
 419
 420    OR alternatively you can try the following (the Cygnus toolchain is
 421    the recommended solution):
 422
 423    * GCC and binutils, GAS and GNU LD out of CVS from
 424      sources.redhat.com as of August 28, 2000 or later.  The CVS tree
 425      may require special patches to work properly on the ia64.
 426
 427 Configuring and compiling GNU Libc for Linux/ia64
 428 =================================================
 429
 430    The library requires Linux kernel version 2.4.0-test4-000728 or
 431 later to funtion properly. Besides that it support for debug libraries
 432 is currently untested. Hence the following options
 433 are required for configuring the library:
 434
 435    --disable-debug --enable-kernel=2.4.0
 436
 437    It is also important that you make sure the library picks up the
 438 appropriate kernel header files, if you do not have recent enough
 439 kernel headers in /usr/src/linux/include, you should use the
 440 --with-headers=<path> option to specify the location.
 441
 442    As an example I personally use the following options to configure
 443 the library:
 444
 445    --disable-debug
 446    --disable-cvs
 447    --enable-kernel=2.4.0
 448    --host=ia64-linux
 449    --enable-add-ons=yes
 450    --prefix=/usr
 451    --with-headers=/home/jes/linux/include
 452
 453
 454 Good luck
 455
 456 Jes Sorensen <jes@linuxcare.com>,
 457 November 14th, 2000
 458 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 459 \f
 460 Version 2.1.3
 461
 462 * bug fixes
 463
 464 \f
 465 Version 2.1.2
 466
 467 * bug fixes
 468
 469 \f
 470 Version 2.1.1
 471
 472 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
 473
 474 * New xdr functions are added; some rpc functions are now 64bit clean.
 475
 476 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
 477
 478 * Fixed known incompatibilities with glibc 2.0.
 479
 480 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
 481
 482 * Optimized a number of functions (especially the ELF dynamic loader).
 483
 484 * Update timezone data files.
 485
 486 * lots of charmaps corrections
 487
 488 * some new locale definitions and charmaps
 489
 490 \f
 491 Version 2.1
 492
 493 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
 494   conform to POSIX member type requirements.  Symbol versions have been
 495   adjusted as needed within the library, and for direct use by applications,
 496   but there is potential for problems if third-party libraries use
 497   struct timeval as part of their interface.  This does not present
 498   a problem for X and other "essential" system libraries.
 499
 500 * An additional locale model to support C++ Standard Library locale
 501   model and probably more was implemented by Ulrich Drepper.
 502
 503 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
 504   symbol level.
 505
 506 * Miles Bader provided the `argp' function family to support hierachical
 507   command line argument parsing, layered on top of getopt.
 508
 509 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
 510
 511 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
 512   numbers.
 513
 514 * scanf recognizes the %a and %A format for scanning floating point numbers.
 515
 516 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
 517   information and interfaces for the available integer types.
 518
 519 * about 130 new math functions were added to implement the ISO C9x math
 520   library.
 521
 522 * the new header <complex.h> contains definitions of the complex math
 523   functions from ISO C 9X.
 524
 525 * the new header <tgmath.h> defines generic macros to use complex or
 526   real valued functions.
 527
 528 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
 529
 530 * Andreas Jaeger provided a test suite for the math library.
 531
 532 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
 533
 534 * Ulrich Drepper added character set conversion functions (iconv).
 535
 536 * Optimized string functions have been added.
 537
 538 * The localedata addon is now part of glibc.
 539
 540 * An implementation of profiling shared libraries was added by Ulrich Drepper.
 541
 542 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
 543   daemon for NSS (nscd).
 544
 545   Missing a better place here are some numbers on improvements.  Under
 546   Linux 2.1.125 un-tar-ing the kernel sources takes
 547
 548                                   user  system     wall
 549
 550     using local files           12.19s   6.88s   22.91s
 551
 552     using NIS                   13.92s   8.91s   26.34s
 553
 554     using NIS & nscd            10.37s   7.34s   25.30s
 555
 556     using NIS+                  27.57s  30.37s  640.46s
 557
 558     using NIS+ & nscd           10.25s   7.83s   26.51s
 559
 560     using NIS & old nscd [1]    13.83s   8.32s   29.60s
 561
 562   Keep in mind that non-namelookup related operations dominate above times.
 563   It was just a common complain that using NIS+ unpacking the kernel is
 564   horribly slow.
 565
 566   [1] The old nscd implementation is not available anymore since it was
 567   distributed with glibc up to version 2.0.98 and thus is now replaced.
 568
 569 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
 570
 571 * Mark Kettenis provided a Hesiod NSS module.
 572
 573 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
 574   and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
 575
 576 * rcmd can now handle netgroups (Dick Streefland).
 577
 578 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
 579   Bambrough.
 580
 581 * Support for the IPv6 protocol has been added to the socket API, as per the
 582   latest draft standards.
 583
 584 * Support for Linux 2.2 has been added.
 585
 586 * Interface changes relative to the latest 2.0.x release:
 587 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 588 addseverity                     NEW: Unix98
 589 alphasort64                     NEW: LFS
 590 argp_err_exit_status            NEW: argp, GNU ext
 591 argp_error                      NEW: argp, GNU ext
 592 argp_failure                    NEW: argp, GNU ext
 593 argp_help                       NEW: argp, GNU ext
 594 argp_parse                      NEW: argp, GNU ext
 595 argp_program_bug_address        NEW: argp, GNU ext
 596 argp_program_version            NEW: argp, GNU ext
 597 argp_program_version_hook       NEW: argp, GNU ext
 598 argp_state_help                 NEW: argp, GNU ext
 599 argp_usage                      NEW: argp, GNU ext
 600 authdes_create                  NEW: Secure RPC
 601 authdes_getucred                NEW: Secure RPC
 602 authdes_pk_create               NEW: Secure RPC
 603 backtrace                       NEW: GNU ext.
 604 backtrace_symbols               NEW: GNU ext.
 605 backtrace_symbols_fd            NEW: GNU ext.
 606 cacos                           NEW: ISO C 9x
 607 cacosf                          NEW: ISO C 9x
 608 cacosh                          NEW: ISO C 9x
 609 cacoshf                         NEW: ISO C 9x
 610 cacoshl                         NEW: ISO C 9x
 611 cacosl                          NEW: ISO C 9x
 612 capget                          NEW: kernel
 613 capset                          NEW: kernel
 614 carg                            NEW: ISO C 9x
 615 cargf                           NEW: ISO C 9x
 616 cargl                           NEW: ISO C 9x
 617 casin                           NEW: ISO C 9x
 618 casinf                          NEW: ISO C 9x
 619 casinh                          NEW: ISO C 9x
 620 casinhf                         NEW: ISO C 9x
 621 casinhl                         NEW: ISO C 9x
 622 casinl                          NEW: ISO C 9x
 623 catan                           NEW: ISO C 9x
 624 catanf                          NEW: ISO C 9x
 625 catanh                          NEW: ISO C 9x
 626 catanhf                         NEW: ISO C 9x
 627 catanhl                         NEW: ISO C 9x
 628 catanl                          NEW: ISO C 9x
 629 cbc_crypt                       NEW: Secure RPC
 630 ccos                            NEW: ISO C 9x
 631 ccosf                           NEW: ISO C 9x
 632 ccosh                           NEW: ISO C 9x
 633 ccoshf                          NEW: ISO C 9x
 634 ccoshl                          NEW: ISO C 9x
 635 ccosl                           NEW: ISO C 9x
 636 cexp                            NEW: ISO C 9x
 637 cexpf                           NEW: ISO C 9x
 638 cexpl                           NEW: ISO C 9x
 639 cimag                           NEW: ISO C 9x
 640 cimagf                          NEW: ISO C 9x
 641 cimagl                          NEW: ISO C 9x
 642 clearerr_locked                 REMOVED
 643 clntunix_create                 NEW: sunrpc ext
 644 clog                            NEW: ISO C 9x
 645 clog10                          NEW: ISO C 9x
 646 clog10f                         NEW: ISO C 9x
 647 clog10l                         NEW: ISO C 9x
 648 clogf                           NEW: ISO C 9x
 649 clogl                           NEW: ISO C 9x
 650 conj                            NEW: ISO C 9x
 651 conjf                           NEW: ISO C 9x
 652 conjl                           NEW: ISO C 9x
 653 cpow                            NEW: ISO C 9x
 654 cpowf                           NEW: ISO C 9x
 655 cpowl                           NEW: ISO C 9x
 656 cproj                           NEW: ISO C 9x
 657 cprojf                          NEW: ISO C 9x
 658 cprojl                          NEW: ISO C 9x
 659 creal                           NEW: ISO C 9x
 660 crealf                          NEW: ISO C 9x
 661 creall                          NEW: ISO C 9x
 662 creat64                         NEW: LFS
 663 csin                            NEW: ISO C 9x
 664 csinf                           NEW: ISO C 9x
 665 csinh                           NEW: ISO C 9x
 666 csinhf                          NEW: ISO C 9x
 667 csinhl                          NEW: ISO C 9x
 668 csinl                           NEW: ISO C 9x
 669 csqrt                           NEW: ISO C 9x
 670 csqrtf                          NEW: ISO C 9x
 671 csqrtl                          NEW: ISO C 9x
 672 ctan                            NEW: ISO C 9x
 673 ctanf                           NEW: ISO C 9x
 674 ctanh                           NEW: ISO C 9x
 675 ctanhf                          NEW: ISO C 9x
 676 ctanhl                          NEW: ISO C 9x
 677 ctanl                           NEW: ISO C 9x
 678 des_setparity                   NEW: Secure RPC
 679 ecb_crypt                       NEW: Secure RPC
 680 endutxent                       NEW: Unix98
 681 exp10                           NEW: ISO C 9x
 682 exp10f                          NEW: ISO C 9x
 683 exp10l                          NEW: ISO C 9x
 684 exp2                            NEW: ISO C 9x
 685 exp2f                           NEW: ISO C 9x
 686 exp2l                           NEW: ISO C 9x
 687 fattach                         NEW: STREAMS
 688 fdetach                         NEW: STREAMS
 689 fdim                            NEW: ISO C 9x
 690 fdimf                           NEW: ISO C 9x
 691 fdiml                           NEW: ISO C 9x
 692 feclearexcept                   NEW: ISO C 9x
 693 fegetenv                        NEW: ISO C 9x
 694 fegetexceptflag                 NEW: ISO C 9x
 695 fegetround                      NEW: ISO C 9x
 696 feholdexcept                    NEW: ISO C 9x
 697 feof_locked                     REMOVED
 698 feraiseexcept                   NEW: ISO C 9x
 699 ferror_locked                   REMOVED
 700 fesetenv                        NEW: ISO C 9x
 701 fesetexceptflag                 NEW: ISO C 9x
 702 fesetround                      NEW: ISO C 9x
 703 fetestexcept                    NEW: ISO C 9x
 704 feupdateenv                     NEW: ISO C 9x
 705 fflush_locked                   REMOVED
 706 ffsl                            NEW: GNU ext.
 707 ffsll                           NEW: GNU ext.
 708 fgetpos64                       NEW: LFS
 709 fgets_unlocked                  NEW: GNU ext.
 710 fileno_locked                   REMOVED
 711 fma                             NEW: ISO C 9x
 712 fmaf                            NEW: ISO C 9x
 713 fmal                            NEW: ISO C 9x
 714 fmax                            NEW: ISO C 9x
 715 fmaxf                           NEW: ISO C 9x
 716 fmaxl                           NEW: ISO C 9x
 717 fmin                            NEW: ISO C 9x
 718 fminf                           NEW: ISO C 9x
 719 fminl                           NEW: ISO C 9x
 720 fmtmsg                          NEW: Unix98
 721 fopen64                         NEW: LFS
 722 fputc_locked                    REMOVED
 723 fputs_unlocked                  NEW: GNU ext.
 724 fread_unlocked                  NEW: GNU ext.
 725 freopen64                       NEW: LFS
 726 fseeko                          NEW: Unix98
 727 fsetpos64                       NEW: LFS
 728 fstatfs64                       NEW: LFS
 729 fstatvfs                        NEW: Unix98
 730 fstatvfs64                      NEW: LFS
 731 ftello                          NEW: Unix98
 732 ftello64                        NEW: LFS
 733 ftruncate64                     NEW: LFS
 734 ftw64                           NEW: LFS
 735 fwrite_unlocked                 NEW: GNU ext.
 736 gai_strerror                    NEW: IPv6
 737 gamma_r                         REMOVED
 738 gammaf_r                        REMOVED
 739 gammal_r                        REMOVED
 740 getchar_locked                  REMOVED
 741 getdate                         NEW: Unix98
 742 getdate_err                     NEW: Unix98
 743 getdate_r                       NEW: GNU ext.
 744 getmsg                          NEW: STREAMS
 745 getnameinfo                     NEW: IPv6
 746 getnetname                      NEW: Secure RPC
 747 getpmsg                         NEW: STREAMS
 748 getpt                           NEW: Unix98 PTY
 749 getrlimit64                     NEW: LFS
 750 getutxent                       NEW: Unix98
 751 getutxid                        NEW: Unix98
 752 getutxline                      NEW: Unix98
 753 glob64                          NEW: GNU ext.
 754 globfree64                      NEW: GNU ext.
 755 gnu_get_libc_release            NEW: GNU ext.
 756 gnu_get_libc_version            NEW: GNU ext.
 757 grantpt                         NEW: Unix98 PTY
 758 host2netname                    NEW: Secure RPC
 759 iconv                           NEW: iconv
 760 iconv_close                     NEW: iconv
 761 iconv_open                      NEW: iconv
 762 if_freenameindex                NEW: IPv6
 763 if_indextoname                  NEW: IPv6
 764 if_nameindex                    NEW: IPv6
 765 if_nametoindex                  NEW: IPv6
 766 in6addr_any                     NEW: IPv6
 767 in6addr_loopback                NEW: IPv6
 768 inet6_isipv4mapped              NEW: IPv6
 769 isastream                       NEW: STREAMS
 770 iswblank                        NEW: GNU ext.
 771 key_decryptsession              NEW: Secure RPC
 772 key_decryptsession_pk           NEW: Secure RPC
 773 key_encryptsession              NEW: Secure RPC
 774 key_encryptsession_pk           NEW: Secure RPC
 775 key_gendes                      NEW: Secure RPC
 776 key_get_conv                    NEW: Secure RPC
 777 key_secretkey_is_set            NEW: Secure RPC
 778 key_setnet                      NEW: Secure RPC
 779 key_setsecret                   NEW: Secure RPC
 780 llrint                          NEW: ISO C 9x
 781 llrintf                         NEW: ISO C 9x
 782 llrintl                         NEW: ISO C 9x
 783 llround                         NEW: ISO C 9x
 784 llroundf                        NEW: ISO C 9x
 785 llroundl                        NEW: ISO C 9x
 786 log2                            NEW: ISO C 9x
 787 log2f                           NEW: ISO C 9x
 788 log2l                           NEW: ISO C 9x
 789 lrint                           NEW: ISO C 9x
 790 lrintf                          NEW: ISO C 9x
 791 lrintl                          NEW: ISO C 9x
 792 lround                          NEW: ISO C 9x
 793 lroundf                         NEW: ISO C 9x
 794 lroundl                         NEW: ISO C 9x
 795 lseek64                         NEW: LFS
 796 makecontext                     NEW: Unix98
 797 mempcpy                         NEW: GNU ext.
 798 mmap64                          NEW: LFS
 799 moncontrol                      REMOVED
 800 modify_ldt                      NEW: kernel
 801 nan                             NEW: ISO C 9x
 802 nanf                            NEW: ISO C 9x
 803 nanl                            NEW: ISO C 9x
 804 nearbyint                       NEW: ISO C 9x
 805 nearbyintf                      NEW: ISO C 9x
 806 nearbyintl                      NEW: ISO C 9x
 807 netname2host                    NEW: Secure RPC
 808 netname2user                    NEW: Secure RPC
 809 nexttoward                      NEW: ISO C 9x
 810 nexttowardf                     NEW: ISO C 9x
 811 nexttowardl                     NEW: ISO C 9x
 812 nftw                            NEW: Unix98
 813 nftw64                          NEW: LFS
 814 open64                          NEW: LFS
 815 passwd2des                      NEW: Secure RPC
 816 pow10                           NEW: GNU ext.
 817 pow10f                          NEW: GNU ext.
 818 pow10l                          NEW: GNU ext.
 819 pread                           NEW: Unix98
 820 pread64                         NEW: LFS
 821 printf_size                     NEW: GNU ext.
 822 printf_size_info                NEW: GNU ext.
 823 profil_counter                  REMOVED
 824 pthread_mutexattr_getkind_np    REPLACED
 825 pthread_mutexattr_setkind_np    REPLACED
 826 ptsname                         NEW: Unix98 PTY
 827 ptsname_r                       NEW: Unix98 PTY
 828 putc_locked                     REMOVED
 829 putchar_locked                  REMOVED
 830 putgrent                        NEW: GNU ext.
 831 putmsg                          NEW: STREAMS
 832 putpmsg                         NEW: STREAMS
 833 pututxline                      NEW: Unix98
 834 pwrite                          NEW: Unix98
 835 pwrite64                        NEW: LFS
 836 readdir64                       NEW: LFS
 837 readdir64_r                     NEW: LFS
 838 remquo                          NEW: ISO C 9x
 839 remquof                         NEW: ISO C 9x
 840 remquol                         NEW: ISO C 9x
 841 round                           NEW: ISO C 9x
 842 roundf                          NEW: ISO C 9x
 843 roundl                          NEW: ISO C 9x
 844 rtime                           NEW: GNU ext.
 845 scalbln                         NEW: ISO C 9x
 846 scalblnf                        NEW: ISO C 9x
 847 scalblnl                        NEW: ISO C 9x
 848 scandir64                       NEW: LFS
 849 sendfile                        NEW: kernel
 850 setcontext                      NEW: Unix98
 851 setrlimit64                     NEW: LFS
 852 setutxent                       NEW: Unix98
 853 sighold                         NEW: Unix98
 854 sigignore                       NEW: Unix98
 855 sigqueue                        NEW: POSIX.1b
 856 sigrelse                        NEW: Unix98
 857 sigset                          NEW: POSIX.1b
 858 sigtimedwait                    NEW: POSIX.1b
 859 sigwaitinfo                     NEW: POSIX.1b
 860 sincos                          NEW: GNU ext.
 861 sincosf                         NEW: GNU ext.
 862 sincosl                         NEW: GNU ext.
 863 statfs64                        NEW: LFS
 864 statvfs                         NEW: Unix98
 865 statvfs64                       NEW: LFS
 866 strcasestr                      NEW: GNU ext.
 867 strtoimax                       NEW: ISO C 9x
 868 strtoumax                       NEW: ISO C 9x
 869 strverscmp                      NEW: GNU ext.
 870 svcauthdes_stats                NEW: Secure RPC
 871 svcunix_create                  NEW: sunrpc etx
 872 svcunixfd_create                NEW: sunrpc ext
 873 swapcontext                     NEW: Unix98
 874 tcgetsid                        NEW: Unix98 PTY
 875 tdestroy                        NEW: GNU ext.
 876 tgamma                          NEW: ISO C 9x
 877 tgammaf                         NEW: ISO C 9x
 878 tgammal                         NEW: ISO C 9x
 879 tmpfile64                       NEW: LFS
 880 trunc                           NEW: ISO C 9x
 881 truncate64                      NEW: LFS
 882 truncf                          NEW: ISO C 9x
 883 truncl                          NEW: ISO C 9x
 884 umount2                         NEW: kernel
 885 unlockpt                        NEW: Unix98 PTY
 886 updwtmpx                        NEW: Unix98
 887 user2netname                    NEW: Secure RPC
 888 utmpxname                       NEW: Unix98
 889 versionsort                     NEW: GNU ext.
 890 versionsort64                   NEW: GNU ext.
 891 waitid                          NEW: Unix98
 892 wcscasecmp                      NEW: GNU ext.
 893 wcsncasecmp                     NEW: GNU ext.
 894 wcsnlen                         NEW: GNU ext.
 895 wcstoimax                       NEW: ISO C 9x
 896 wcstoll                         NEW: ISO C 9x
 897 wcstoull                        NEW: ISO C 9x
 898 wcstoumax                       NEW: ISO C 9x
 899 wcswcs                          NEW: Unix98
 900 wordexp                         NEW: POSIX.2
 901 wordfree                        NEW: POSIX.2
 902 write_profiling                 REMOVED
 903 xdecrypt                        NEW: Secure RPC
 904 xdr_authdes_cred                NEW: Secure RPC
 905 xdr_authdes_verf                NEW: Secure RPC
 906 xdr_cryptkeyarg                 NEW: Secure RPC
 907 xdr_cryptkeyarg2                NEW: Secure RPC
 908 xdr_cryptkeyres                 NEW: Secure RPC
 909 xdr_getcredres                  NEW: Secure RPC
 910 xdr_key_netstarg                NEW: Secure RPC
 911 xdr_key_netstres                NEW: Secure RPC
 912 xdr_keybuf                      NEW: Secure RPC
 913 xdr_keystatus                   NEW: Secure RPC
 914 xdr_netnamestr                  NEW: Secure RPC
 915 xdr_sizeof                      NEW: Secure RPC
 916 xdr_unixcred                    NEW: sunrpc ext
 917 xencrypt                        NEW: Secure RPC
 918 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 919 \f
 920 Version 2.0.6
 921
 922 * more bug fixes
 923
 924 \f
 925 Version 2.0.5
 926
 927 * more bug fixes
 928
 929 * inet_ntoa is thread-safe
 930
 931 * updwtmp is moved from libutil to libc
 932
 933 * rewrite of cbrt function
 934
 935 * update of timezone data
 936 \f
 937 Version 2.0.4
 938
 939 * more bug fixes
 940 \f
 941 Version 2.0.3
 942
 943 * more bug fixes
 944 \f
 945 Version 2.0.2
 946
 947 * more bug fixes
 948
 949 * add atoll function
 950
 951 * fix complex problems in Berkeley DB code
 952
 953 * fix math functions
 954 \f
 955 Version 2.0.1
 956
 957 * fixed lots of header problems (especially Linux/GNU specific)
 958
 959 * dynamic loader preserves all registers
 960
 961 * Roland McGrath provided support for handling of auxiliary objects in
 962   the ELF dynamic loader.
 963
 964 * support for parallel builds is improved
 965 \f
 966 Version 2.0
 967
 968 * GNU extensions are no longer declared by default.  To enable them you
 969   must define the macro `_GNU_SOURCE' in your program or compile with
 970   `-D_GNU_SOURCE'.
 971
 972 * The library has changed from using GNU ld symbol aliases to using weak
 973   symbols where available.  The ELF object file format supports weak
 974   symbols; GNU ld also supports weak symbols in the a.out format.  (There
 975   is also now support for other GNU ld extensions in ELF.  Use the
 976   `--with-elf' option to configure to indicate you have ELF, and
 977   `--with-gnu-ld' if using GNU ld.)  This change resulted in the deletion
 978   of many files which contained only symbol aliases, reducing the size of
 979   the source and the compiled library; many other files were renamed to
 980   less cryptic names previously occupied by the symbol alias files.
 981   There is a new header file <elf.h> for programs which operate on
 982   files in the ELF format.
 983
 984 * Converted to Autoconf version 2, so `configure' has more options.
 985   Run `configure --help' to see the details.
 986
 987 * The library can now be configured to build profiling, highly-optimized
 988   (but undebuggable), and/or shared libraries (ELF with GNU ld only).  The
 989   `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
 990   `configure' enable building these extra libraries.  The shared library is
 991   built by default when using both ELF and GNU ld.  When shared libraries
 992   are enabled, the new library `-ldl' is available for arbitrary run-time
 993   loading of shared objects; its interface is defined in <dlfcn.h>.  The
 994   new header file <link.h> gives access to the internals of the run-time
 995   dynamic linker, `ld.so'.  The shell script `ldd' is similar to the
 996   application of same name on other systems and it provides information
 997   about dynamically linked binaries.
 998
 999 * The C library now provides the run-time support code for profiling
1000   executables compiled with `-pg'.  Programs can control the profiling code
1001   through the interface in <sys/gmon.h>.  The `gmon.out' files written by
1002   the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1003   the support for this file format was contributed by David Mosberger-Tang.
1004
1005 * The math code has been replaced with a math library based on fdlibm from
1006   Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1007   Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1008   functions.  The math functions now reside in a separate library,  so
1009   programs using them will need to use `-lm' their linking commands.
1010
1011 * John C. Bowman contributed optimized ix87 assembler inline functions.
1012
1013 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1014   mechanism similar to that found in Solaris 2.  This is now used for the
1015   group, passwd, hosts, networks, services, protocols, rpc, ethers,
1016   shadow, netgroup, publickey, and alias databases.  The `nsswitch.conf'
1017   file controls what services are used for each individual database.  This
1018   works by loading shared libraries with names specified in `nsswitch.conf',
1019   so service modules can be changed or added at any time without even
1020   relinking any program.  Currently there are the file, db, and NIS based
1021   NSS services available.
1022
1023 * The new functions `strtoq' and `strtouq' parse integer values from
1024   strings, like `strtol' and `strtoul', but they return `long long int' and
1025   `unsigned long long int' values, respectively (64-bit quantities).
1026
1027 * The new functions `strtof' and `strtold' parse floating-point values from
1028   strings, like `strtod', but they return `float' and `long double' values,
1029   respectively (on some machines `double' and `long double' are the same).
1030
1031 * Ulrich Drepper has contributed new implementations of the floating-point
1032   printing and reading code used in the `printf' family of functions and
1033   `strtod', `strtof', and `strtold'.  These new functions are perfectly
1034   accurate, and much faster than the old ones.
1035
1036 * The implementation of the POSIX locale model was completely rewritten by
1037   Ulrich Drepper.  This includes the new programs `localedef' and `locale'
1038   to compile the POSIX locale definition.
1039
1040 * The former dummy implementations of the strcoll and strxfrm function are
1041   now replaced by fully functional code contributed by Ulrich Drepper.  The
1042   collation information comes from the POSIX locale definitions.
1043
1044 * The new header <langinfo.h> defines an interface for accessing
1045   various locale-dependent data (using the locale chosen with `setlocale').
1046
1047 * Ulrich Drepper has contributed a new suite of functions for operation on
1048   wide-character and multibyte-character strings, in <wchar.h>;
1049   and classification and case conversion of wide characters, in <wctype.h>.
1050   These new functions are conforming to the ISO C, Amendement 1 specification.
1051
1052 * There is now a second implementation of the standard I/O library available.
1053   It comes from GNU libg++ as was written by Per Bothner, heavily modified
1054   by Hongjiu Lu and made thread safe by Ulrich Drepper.
1055
1056 * You can now use positional parameter specifications in format strings
1057   for the `printf' and `scanf' families of functions.  For example,
1058   `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1059   ``Number 6, Mr Jones''.  This is mainly useful when providing different
1060   format strings for different languages, whose grammars may dictate
1061   different orderings of the values being printed.  To support this
1062   feature, the interface for `register_printf_handler' has changed; see
1063   the header file <printf.h> for details.
1064
1065 * The `printf' and `scanf' families of functions now understand a new
1066   formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1067   to group numbers as indicated by the locale; for `scanf' and friends, this
1068   says to accept as valid only a number with all the proper grouping
1069   separators in the right places.  In the default "C" locale, numbers are
1070   not grouped; but locales for specific countries will define the usual
1071   conventions (i.e. separate thousands with `,' in the US locale).
1072
1073 * The pgrp functions have been regularized, slightly incompatibly but much
1074   less confusingly.  The core functions are now `getpgid' and `setpgid',
1075   which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1076   argument) and BSD `setpgrp' (identical to `setpgid') functions are
1077   provided for compatibility.  There is no longer an incompatible `getpgrp'
1078   with an argument declared under _BSD_SOURCE; no BSD code uses it.
1079
1080 * The new header file <fts.h> and suite of functions simplify programs that
1081   operate on directory trees.  This code comes from 4.4 BSD.
1082
1083 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1084   Parts of the code were heavily modified by Ulrich Drepper to fit in the
1085   NSS scheme used in glibc.
1086
1087 * There is a new malloc debugging hook `__memalign_hook'.
1088
1089 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1090   `unsigned int' in <sys/types.h>.  These are for compatibility only and
1091   their use is discouraged.
1092
1093 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1094   done differently, so that it works even without GNU ld.
1095
1096 * New function `euidaccess' checks allowed access to a file like `access',
1097   but using the effective IDs instead of the real IDs.
1098
1099 * The time zone data files have been updated for the latest and greatest
1100   local time conventions of the countries of the world.
1101
1102 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1103   see <dirent.h>.
1104
1105 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1106   for formatting floating-point numbers.  They are provided only for
1107   compatibility; new programs should use `sprintf' instead.  There are
1108   also equivalent function for the `long double' floating-point type and
1109   all functions also exist in a reentrant form.
1110
1111 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1112   functions for maintaining the login-record files (primarily of use to
1113   system programs such as `login'), and convenient functions for
1114   allocating and initializing a pseudo-terminal (pty) device.
1115
1116 * Ulrich Drepper has contributed new support for System V style
1117   shared memory and IPC on systems that support it.
1118
1119 * Ulrich Drepper has contributed several miscellaneous new functions found
1120   in System V: The `hsearch' family of functions provide an effective
1121   implementation of hash tables; `a64l' and `l64a' provide a very simple
1122   binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1123   number generator.
1124
1125 * Ulrich Drepper has contributed new reentrant counterparts for the
1126   `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1127
1128 * Ulrich Drepper has contributed new, highly-optimized versions of several
1129   string functions for the i486/Pentium family of processors.
1130
1131 * Ulrich Drepper has updated the Linux-specific code, based largely
1132   on work done in Hongjiu Lu's version of GNU libc for Linux.
1133   The GNU library now supports Linux versions 2.0.10 and later,
1134   using the ELF object file format (i[3456]86-*-linux).
1135
1136 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1137
1138 * David Mosberger-Tang and Richard Henderson have ported the C library
1139   to Linux/Alpha (alpha-*-linux).  Richard Henderson contributed the
1140   dynamic linking support for ELF/Alpha.
1141
1142 * Richard Henderson contributed several Alpha optimized assembler function
1143   for arithmetic and string handling.
1144
1145 * Ulrich Drepper has contributed a new set of message catalog functions to
1146   support multiple languages using the <libintl.h> interface, for use with
1147   his new package GNU gettext.  Translation volunteers have contributed
1148   catalogs of the library's messages in Spanish, German, and Korean.
1149
1150 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1151   program and the `catgets' function for reading the catalog files it
1152   creates.  (The <libintl.h> interface is preferred; we include the
1153   <nl_types.h> interface using `catgets' only for source compatibility with
1154   programs already written to use it.)
1155
1156 * New header file <values.h> gives SVID-compatible names for <limits.h>
1157   constants.
1158
1159 * Various new macros, declarations, and small header files for compatibility
1160   with 4.4 BSD.
1161
1162 * New function `group_member' is a convenient way to check if a process has
1163   a given effective group ID.
1164
1165 * When using GCC 2.7 and later, the socket functions are now declared in a
1166   special way so that passing an argument of type `struct sockaddr_in *',
1167   `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1168   `struct sockaddr *' type, does not generate a type-clash warning.
1169
1170 * New function `error' declared in header file <error.h> is a convenient
1171   function for printing error messages and optionally exiting; this is the
1172   canonical function used in GNU programs.  The new functions `err', `warn',
1173   and friends in header file <err.h> are the canonical 4.4 BSD interface for
1174   doing the same thing.
1175
1176 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1177   POSIX.2 `glob' function to do ~ and {...} expansion.
1178
1179 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1180   `clearenv' which is used in POSIX.9 is also available.
1181
1182 * New function `getsid' returns session ID number on systems that support it.
1183
1184 * We have incorporated the 4.4 BSD `db' library (version 1.85).  New header
1185   files <db.h> and <mpool.h> provide a rich set of functions for several
1186   types of simple databases stored in memory and in files, and <ndbm.h> is
1187   an old `ndbm'-compatible interface using the `db' functions.  Link with
1188   `-ldb' to get these functions.
1189
1190 * New macro `strdupa' copies a string like `strdup', but uses local stack
1191   space from `alloca' instead of dynamic heap space from `malloc'.
1192
1193 * New function `strnlen' is like `strlen' but searches only a given maximum
1194   number of characters for the null terminator.  `stpncpy', `strndup' and
1195   `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1196   function.
1197
1198 * New function `statfs' in header <sys/statfs.h>.
1199
1200 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1201   provide convenient functions for operating on blocks of null-terminated
1202   strings.
1203
1204 * A new suite of functions in <utmp.h> handle all the details of reading
1205   and writing the utmp file.
1206
1207 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1208   Thorsten Kukuk.
1209
1210 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1211   completely POSIX compliant and also implemented the extended functionality
1212   to handle alternate digit representation and alternate era date formats.
1213
1214 * Ulrich Drepper provided an implementation of the `strptime' function
1215   defined in XPG4.2 which transforms a string into a `struct tm' value.
1216
1217 * Paul Eggert provided the tzselect shell script as part of the timezone
1218   code.  The shell script makes it easy to select the correct timezone
1219   specification.
1220
1221 * The implementation of the malloc family of functions is completely replaced
1222   by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1223   The implementation uses the mmap function (if available) and it is
1224   optimized for the use in multi threaded programs.
1225
1226 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1227   functions.  This new functionality is usable by specifying a special
1228   salt string and it is compatible with implementation on *BSD systems.
1229
1230 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1231   `getsubopt' to handle second level command line options, `bsd_signal'
1232   to access BSD style `signal' functionality, the obsolete `regexp' style
1233   expression matcher.
1234
1235 * the `lchown' function is available on system which support this
1236   functionality.
1237
1238 * The implementation of the shadow password handling function was contributed
1239   by Ulrich Drepper.
1240
1241 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1242
1243 * POSIX.1g support was added.  The <sys/select.h> header is available,
1244   `isfdtype' and `pselect' are implemented.  Craig Metz contributed an
1245   implementation of `getaddrinfo'.
1246 \f
1247 Version 1.09
1248
1249 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1250
1251 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1252   friends, for parsing /etc/fstab.  This code comes from 4.4 BSD.
1253
1254 * The new function `daemon' from 4.4 BSD is useful for server programs that
1255   want to put themselves in the background.
1256
1257 * Joel Sherrill has contributed support for several standalone boards that
1258   run without an operating system.
1259
1260 * `printf', `scanf' and friends now accept a `q' type modifier for long
1261   long int as well as `ll'.  Formats using these might be `%qu' or `%lld'.
1262
1263 * All of the code taken from BSD (notably most of the math and networking
1264   routines) has been updated from the BSD 4.4-Lite release.
1265
1266 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1267
1268 * The new functions `getdomainname' and `setdomainname' fetch or change the
1269   YP/NIS domain name.  These are system calls which exist on systems which
1270   have YP (aka NIS).
1271
1272 * The time zone data files have been updated for the latest international
1273   conventions.
1274
1275 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1276   $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1277 \f
1278 Version 1.08
1279
1280 * The C library now includes support for Sun RPC, from Sun's free
1281   RPCSRC-4.0 distribution.  The `portmap', `rpcinfo', and `rpcgen' programs
1282   are included.  (There is still no support for YP.)
1283
1284 * Tom Quinn has contributed a port of the C library to SGI machines running
1285   Irix 4 (mips-sgi-irix4).
1286
1287 * The new `lockf' function is a simplified interface to the locking
1288   facilities of `fcntl', included for compatibility.
1289
1290 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1291
1292 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1293
1294 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1295   compatibility.
1296
1297 * The error message printed by `assert' for a failed assertion now includes
1298   the name of the program (if using GNU ld) and the name of the calling
1299   function (with versions of GCC that support this).
1300
1301 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1302
1303 * The library now includes the <sys/mman.h> header file and memory
1304   management functions `mmap', `munmap', `mprotect', `msync', and
1305   `madvise', on systems that support those facilities.
1306
1307 * The interface for `mcheck' has changed slightly: the function called to
1308   abort the program when an allocation inconsistency is detected now takes
1309   an argument that indicates the type of failure.  The new function
1310   `mprobe' lets you request a consistency check for a particular block at
1311   any time (checks are normally done only when you call `free' or `realloc'
1312   on a block).
1313
1314 * It is now possible to easily cross-compile the C library, building on one
1315   system a library to run on another machine and/or operating system.  All
1316   you need to do is set the variable `HOST_CC' in `configparms' to the
1317   native compiler for programs to run on the machine you are building on (a
1318   few generator programs are used on Unix systems); set `CC' to the
1319   cross-compiler.
1320
1321 * The new function `fexecve' (only implemented on the GNU system) executes
1322   a program file given a file descriptor already open on the file.
1323 \f
1324 Version 1.07
1325
1326 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1327   running OSF/1 (alpha-dec-osf1).  He says it is 75% complete.
1328
1329 * You can set the variable `libprefix' in `configparms' to specify a prefix
1330   to be prepended to installed library files; this makes it easy to install
1331   the GNU C library to be linked as `-lgnuc' or whatever.
1332
1333 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1334   copies a limited number of characters from a string, and returns the
1335   address of the last character written.
1336
1337 * You no longer need to check for whether the installed `stddef.h' is
1338   compatible with the GNU C library.  configure now checks for you.
1339
1340 * You can now define a per-stream `fileno' function to convert the
1341   stream's cookie into an integral file descriptor.
1342
1343 * ``malloc (0)'' no longer returns a null pointer.  Instead, it
1344   allocates zero bytes of storage, and returns a unique pointer which
1345   you can pass to `realloc' or `free'.  The behavior is undefined if
1346   you dereference this pointer.
1347
1348 * The C library now runs on Sony NEWS m68k machines running either
1349   NewsOS 3 or NewsOS 4.
1350
1351 * The new `syscall' function is a system-dependent primitive function
1352   for invoking system calls.  It has the canonical behavior on Unix
1353   systems, including unreliable return values for some calls (such as
1354   `pipe', `fork' and `getppid').
1355
1356 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
1357   to `EAGAIN', which is the preferred name.  On systems whose kernels
1358   use two distinct codes, the C library now translates EWOULDBLOCK to
1359   EAGAIN in every system call function.
1360 \f
1361 Version 1.06
1362
1363 * The GNU C Library Reference Manual is now distributed with the library.
1364   `make dvi' will produce a DVI file of the printed manual.
1365   `make info' will produce Info files that you can read on line using C-h i
1366   in Emacs or the `info' program.
1367   Please send comments on the manual to bug-glibc-manual@gnu.org.
1368
1369 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
1370
1371 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
1372
1373 * Jason Merrill has contributed a port to the Sequent Symmetry running
1374   Dynix version 3 (i386-sequent-dynix).
1375
1376 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
1377   ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
1378
1379 * New function `memory_warnings' lets you arrange to get warnings when
1380   malloc is running out of memory to allocate, like Emacs gives you.
1381
1382 * The C library now contains the relocating allocator used in Emacs 19 for
1383   its editing buffers.  This allocator (ralloc) minimizes allocation
1384   overhead and fragmentation by moving allocated regions around whenever it
1385   needs to.  You always refer to a ralloc'd region with a "handle" (a
1386   pointer to a pointer--an object of type `void **').
1387
1388 * There is a new `printf' format: `%m' gives you the string corresponding
1389   to the error code in `errno'.
1390
1391 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
1392   or `%[' conversion, but instead of filling in a fixed-sized buffer you
1393   pass, the `a' modifier says to fill in a `char **' you pass with a
1394   malloc'd string.
1395
1396 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
1397   `FNM_CASEFOLD'.  `FNM_LEADING_DIR' lets a pattern like `foo*' match a
1398   name like `foo/bar'.  `FNM_CASEFOLD' says to ignore case in matching.
1399
1400 * `mkstemp' is a traditional Unix function to atomically create and open a
1401   uniquely-named temporary file.
1402 \f
1403 Version 1.05
1404
1405 * The standard location for the file that says what the local timezone is
1406   has changed again.  It is now `/usr/local/etc/localtime' (or more
1407   precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
1408
1409 * The distribution no longer contains any files with names longer than 14
1410   characters.
1411
1412 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
1413   These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
1414
1415 * New functions `ttyslot' and `syslog' from 4.4 BSD.
1416 \f
1417 Version 1.04
1418
1419 * The configuration process has changed quite a bit.  The `configure'
1420   script is now used just like the configuration scripts for other GNU
1421   packages.  The `sysdeps' directory hierarchy is much rearranged.
1422   The file `INSTALL' explains the new scheme in detail.
1423
1424 * The header files no longer need to be processed into ANSI C and
1425   traditional C versions.  There is just one set of files to install, and
1426   it will work with ANSI or old C compilers (including `gcc -traditional').
1427
1428 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
1429   MIPS DECStation running Ultrix 4.
1430
1431 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
1432   Tom Quinn contributed the initial code.  The GNU C library can NOT yet be
1433   made itself into a shared library.
1434
1435 * Yet further improved support for the i386, running 4.3 BSD-like systems
1436   (such as Mach 3 with the Unix single-server), or System V.
1437
1438 * New function `strncasecmp' to do case-insensitive string comparison
1439   with limited length.
1440
1441 * New function `strsep' is a reentrant alternative to `strtok'.
1442
1443 * New functions `scandir' and `alphasort' for searching directories.
1444
1445 * New function `setenv' is a better interface to `putenv'.
1446
1447 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
1448   function for traversing a directory tree.
1449
1450 * The GNU obstack package is now also part of the C library.
1451   The new function `open_obstack_stream' creates a stdio stream that
1452   writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
1453   formatted output directly to an obstack.
1454
1455 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
1456   cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
1457
1458 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
1459
1460 * The new functions `strfry' and `memfrob' do mysterious and wonderful
1461   things to your strings.
1462
1463 * There are some new test programs: test-fseek, testmb, and testrand.
1464
1465 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
1466   These ports are not finished, but are a good starting place for really
1467   supporting those systems.
1468
1469 * `/etc/localtime' is now the standard location for the file that says what
1470   the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
1471   This follows the general principle that `/etc' is the place for all local
1472   configuration files.
1473
1474 * The C library header files now use `extern "C"' when used by the C++
1475   compiler, so the C library should now work with C++ code.
1476
1477 * The header file <bstring.h> is gone.  <string.h> now declares bcopy,
1478   bcmp, bzero, and ffs.  (Update: nowadays these functions are declared
1479   in <strings.h>.)
1480
1481 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
1482   function which uses the `merge sort' algorithm, and is said to be
1483   significantly faster than the old GNU `qsort' function.  Merge sort is
1484   now the standard `qsort' function.  The new algorithm can require a lot
1485   of temporary storage; so, the old sorting function is called when the
1486   required storage is not available.
1487
1488 * The C library now includes Michael Glad's Ultra Fast Crypt, which
1489   provides the Unix `crypt' function, plus some other entry points.
1490
1491 * The code and header files taken from 4.4 BSD have been updated with the
1492   latest files released from Berkeley.
1493 \f
1494 ----------------------------------------------------------------------
1495 Copyright information:
1496
1497 Copyright (C) 1992-1999,2000,2001,2002 Free Software Foundation, Inc.
1498
1499    Permission is granted to anyone to make or distribute verbatim copies
1500    of this document as received, in any medium, provided that the
1501    copyright notice and this permission notice are preserved,
1502    thus giving the recipient permission to redistribute in turn.
1503
1504    Permission is granted to distribute modified versions
1505    of this document, or of portions of it,
1506    under the above conditions, provided also that they
1507    carry prominent notices stating who last changed them.
1508 \f
1509 Local variables:
1510 version-control: never
1511 End: