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1 GNU C Library NEWS -- history of user-visible changes. 2006-04-16
2 Copyright (C) 1992-2002,2003,2004,2005,2006 Free Software Foundation, Inc.
3 See the end for copying conditions.
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 2.5
10 * For Linux, the sorting of addresses returned by getaddrinfo now also
11 handles rules 3 and 7 from RFC 3484. Implemented by Ulrich Drepper.
13 * New Linux interfaces: splice, tee, sync_file_range.
15 \f
16 Version 2.4
18 * More overflow detection functions.
20 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
21 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
23 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
24 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
25 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
26 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
27 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
28 by Masahide Washizawa.
30 * It is now possible to install audit libraries for the dynamic linker using
31 LD_AUDIT. Implemented by Ulrich Drepper.
33 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
34 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
35 For a libc and libpthread that works well on Linux 2.4 kernels, we
36 recommend using the stable 2.3 branch.
38 * The new function open_wmemstream acts like open_memstream,
39 but uses a wchar_t wide character buffer.
41 * The new function ppoll is an improved version of poll, similar to pselect.
43 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
44 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
45 renameat, unlinkat, linkat, symlinkat, readlinkat.
47 * New Linux kernel system calls: unshare,
48 inotify_init, inotify_add_watch, inotify_rm_watch.
50 * The euidaccess function is now also known by the alias eaccess,
51 for compatibility with some other systems.
53 * Timezone data updated to 2006b version.
54 \f
55 Version 2.3.6
57 * The following bugs are resolved with this release:
59 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
60 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
61 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
62 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
63 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
64 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
66 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
68 * As of this release, GCC 4 can be used to compile the C Library.
70 * Timezone data updated to 2005m version.
71 \f
72 Version 2.3.5
74 * The following bugs are resolved with this release:
76 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
77 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
78 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
79 777, 787, 821, 822, 823, 825
81 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
82 \f
83 Version 2.3.4
85 * Support for RFC 3678. Real implementations exist only for Linux so far.
86 Implemented by Ulrich Drepper.
88 * nscd can now cache entries persistently. Expiring entries are reloaded.
89 For speedups the cache can be shared in memory with client processes.
90 Implemented by Ulrich Drepper.
92 * nscd can now perform SELinux checks.
93 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
95 * getaddrinfo queries are now cached. Canonical name lookup is performed
96 efficiently.
97 Implemented by Ulrich Drepper.
99 * The nothrow function attribute is used when headers are used by gcc when
100 compiling C code. This can avoid significant amounts of exception
101 handling data.
103 * The malloc functions perform more error checking and are stricter when
104 it comes to reacting on errors. The default action is to terminate
105 the process after showing an error message. Implemented by Ulrich Drepper.
107 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
108 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
110 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
111 namespaces using the new function dlmopen(). This feature is of course,
112 like most other dynamic loading functionality, not available in statically
113 linked applications. Implemented by Ulrich Drepper.
115 * Low-overhead boundary checking variants of string and some stdio functions
116 were added. These are to be used in conjunction with a gcc patch by
117 Jakub Jelinek which adds calls to these functions if possible.
118 Implemented by Jakub Jelinek and Ulrich Drepper.
120 * Old code for several operating systems and machine architectures that
121 have not been in working condition in a long time have been removed from
122 the main source tree maintained by the GNU C Library's maintainers.
123 These files are now reside in the separate `ports' source module
124 that is usable as an add-on when building the library.
125 \f
126 Version 2.3.3
128 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
129 interrogate the dynamic linker, compatible with the Solaris interface.
131 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
132 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
134 * getifaddrs now uses the netlink interface on Linux to get its information.
135 Implemented by Thorsten Kukuk.
137 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
138 Implemented by Ulrich Drepper.
140 * support for non-executable stacks on x86 has been added. Changes mostly
141 by Roland McGrath.
143 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
144 and Ulrich Drepper.
146 * getaddrinfo now performs destination address selection according to
147 RFC 3484.
148 \f
149 Version 2.3.2
151 * Thread-safe interfaces for many functions that access locale data
152 were added in version 2.3, but these features were omitted from NEWS.
153 Many functions have variants with an `_l' suffix that take a `locale_t'
154 object as a parameter rather than consulting the current locale.
155 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
156 create and maintain `locale_t' objects. Additionally, the new function
157 `uselocale' sets "the current locale" (as used by functions not so
158 parameterized) set for an individual thread. These features were added
159 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
161 * The functions getresuid, getresgid, setresuid, and setresgid, which
162 have long been available on Linux, are now declared in <unistd.h>
163 and are now also available on the Hurd.
165 * ELF thread-local storage support (TLS) now works on x86-64.
167 * The new dynamic string token $LIB is expanded in shared library names.
168 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
170 * Aldy Hernandez contributed complete software floating point support for
171 PowerPC machines with no FPU.
173 * fexecve is implemented on Linux.
175 * The `btowc' function should work at least twice as fast due to
176 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
178 * With approriate thread add-ons cancelable functions are now implemented
179 in libc.so as well. No need to call the function in libpthread. This
180 change allowed to finally disable the incorrect and expensive handling
181 of weak definition in ld.so.
183 * Yet more PLT entries in libc.so have been removed. We finally arrived
184 at the bare minimum. Startup times improved appropriately.
186 * Support for the new Linux/x86 system call interface was added. The
187 AT_SYSINFO auxiliary vector entry is recognized and handled.
188 \f
189 Version 2.3
191 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
192 charsets.
194 * iconv (the program and the interface) now accepts empty names (excluding
195 options like //TRANSLIT) to mean "use charset of current locale".
197 * localedef can now transliterate characters in strings which are not in
198 the provided charmap. The information from the input locale is used.
200 * Prelinking support was added for ELF targets. This requires additional
201 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
203 * Read-only stdio streams now use mmap to speed up operation by eliminating
204 copying and buffer underflows. To use add 'm' to the mode string of
205 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
207 * The malloc functions were completely rewritten by Wolfram Gloger based
208 on Doug Lea's malloc-2.7.0.c.
210 * Isamu Hasegawa contributed a completely new and POSIX-conformant
211 implementation of regex.
213 * Bruno Haible upgraded the iconv and locale implementation to support
214 Unicode 3.2.
216 * Contents of the LC_* and LANG environment variables in the CEN style are
217 not recognized anymore. It never was used. Change by Ulrich Drepper.
219 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
220 thread-local storage (TLS) ABI on some platforms.
221 Changes by Ulrich Drepper. SH support by Kaz Kojima.
223 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
224 EUC-JISX0213, and TSCII.
226 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
227 BSD-compatible interface for getting all network interface addresses.
228 Implementation for IPv4 by Roland McGrath.
230 * Loading of locale data is faster due to the introduction of a locale
231 archive. Implemented by Roland McGrath and Ulrich Drepper.
233 * Startup times are significantly reduced by not using exported functions
234 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
235 and Ulrich Drepper.
237 * Steven Munroe contributed a port to PowerPC64/Linux.
238 \f
239 Version 2.2.6
241 * The Hurd now uses the GNU libio implementation of stdio rather than the
242 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
244 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
245 with the same behavior as the Linux system call of the same name.
246 \f
247 Version 2.2.5
249 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
250 128-bit long double format.
252 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
253 IBM1161, and IBM1162 charsets.
255 * Andreas Jaeger contributed a port to x86-64/Linux.
257 * Peter Bruin contributed a port to PowerPC/Hurd.
259 * libc functions using I/O streams now can handle wide-oriented streams
260 as well.
262 * optimizations in the dynamic linker. Binaries created by recent binutils
263 versions start up quicker due to reduced time spent on relocations.
265 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
266 \f
267 Version 2.2.4
269 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
270 asinh, atanh, j0 for the 128-bit long double format.
272 * Bruno Haible updated all the code handling Unicode in some form to
273 support Unicode 3.1.
275 * Speed of regex for single-byte locales is back to previous levels.
276 Patch by Isamu Hasegawa.
278 * Alpha, SPARC, and IA-64 now also using floating stacks.
280 * Startup time of internationalized applications greatly improved through
281 iconv cache. Use iconvconfig to generate the cache file.
282 Contributed by Ulrich Drepper.
284 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
285 severe performance problems. Patch by David Mosberger.
287 * The Hurd port got a lot more functionality like AIO, various stdio
288 extensions, etc. Mainly done by Roland McGrath.
290 * mtrace can now lookup symbols in shared libraries.
291 \f
292 Version 2.2.3
294 * Intel's IA-64 math library is largely integrated. It provides fast and
295 accurate implementatations for most basic and standard math functions
296 in float, double, and long double format.
298 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
299 and asin for the 96-bit long double format and asin, log, tan for the
300 128-bit long double format.
302 * The beginning of a last-bit accurate math library by IBM Haifa were added.
303 The basic double functions exist today. Contributed by Abraham Ziv
304 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
305 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
307 * An asynchronous name lookup library was added. The interface is designed
308 after POSIX AIO. The proposal was circulated beforehand to get comments.
309 No negative ones came in. Implemented by Ulrich Drepper.
311 * Port to S390/64bit contributed by Martin Schwidefsky
312 <schwidefsky@de.ibm.com>.
314 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
315 of functions for Linux/IA-64.
317 * The RPC code is now thread safe. Threads can now use the same service
318 of different services at the same time. Patch by Eric Norum
319 <eric.norum@usask.ca> with some help by Ulrich Drepper.
321 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
322 family of functions for Linux/S390.
324 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
325 of functions for Linux/x86.
327 * Port to Linux/CRIS contributed by Axis Communications.
328 \f
329 Version 2.2.2
331 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
332 we can now check for namespace violations and missing declarations. The
333 result is that almost all headers are now Unix-compliant (as defined in
334 the upcoming XPG6). The negative side is that some programs might need
335 corrections, too, if they depend on the incorrect form of the headers in
336 previous versions which defined too many symbols and included too many
337 other headers.
339 * regex now handles multibyte character sets correctly.
340 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
342 * iconv (the program) does now conform to the upcoming XPG6 and handles
343 charmaps. Instead of the charset names the path of charmaps can be
344 provided and the conversion happens based on this data.
345 Contributed by Ulrich Drepper.
347 * The locale program now provides detailed information about the installed
348 locales. While
350 locale -a
352 only lists the names of the supported locales
354 locale -a --verbose
356 provides details such as country, language, and codeset name.
357 Contributed by Ulrich Drepper.
358 \f
359 Version 2.2.1
361 * The gencat program now parses the input file according to the charset
362 selected by the LC_CTYPE category. This is important for stateful
363 character sets. To make generating catalogs easier there is a way
364 to overwrite the charset selected by the locale: before the first
365 message or $ quote line the catalog can contain a line like
367 $ codeset=ISO-8859-2
369 to select the charset (ISO-8859-2 in this case).
371 Implemented by Shinya Hanataka and Ulrich Drepper.
373 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
374 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
375 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
377 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
378 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
380 * The LANGUAGE environment variable is now ignored unless the locale is
381 changed from the default "C" locale.
383 * The usual bug fixes.
384 \f
385 Version 2.2
387 * Greg McGary added runtime support for bounds checking using gcc's
388 new -fbounded-pointers option. ix86 target is complete. PowerPC
389 is in progress.
391 * Thorsten Kukuk added secure mode support to nscd.
393 * The Berkeley db libraries have been removed.
395 Related, the nss_db module is now in a separate package since it
396 obviously requires a database library being available.
398 * Wide character I/O streams implemented by Ulrich Drepper.
400 * Functions from the extended socket API added by Ulrich Drepper.
402 * Functions feenableexcept and fedisableexcept to control the
403 behaviour of individual exceptions have been added by Andreas Jaeger.
405 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
407 * The resolver code has been updated from bind 8.2.3-T5B which supports
408 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
409 and Mark Kettenis.
411 This change could in some situations effect backward compatibility. Since
412 now `_res' is a thread-local instead of a global variable, modifying it
413 in one thread does not have any effect in other threads.
415 The resolver library was also extended to allow IPv6 as the transport
416 protocol for the requests. This work was done by Stig Venaas.
418 * Compatibility code for K&R C compilers has been removed from the
419 header files. A ISO C compiler is needed to use the library
420 (conforming to either C89 or C99 standard).
422 * Complete rewrite of the localedef program to support multibyte character
423 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
424 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
425 Implemented by Ulrich Drepper.
427 Bruno Haible significantly improved the generation and use of the data
428 structures for the wide character tables.
430 * Plural handling in gettext implemented by Ulrich Drepper.
432 * The utmp daemon has been removed.
434 * The port to MIPS-Linux has been finished by Andreas Jaeger.
436 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
437 and Yutaka Niibe.
439 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
441 * POSIX barriers implemented by Kaz Kylheku.
443 * POSIX spawn function family implemented by Ulrich Drepper.
445 * POSIX spinlocks are now available.
447 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
449 * the configure option --enable-kernel=X.Y.Z allows to strip out
450 compatibility for kernel versions before X.Y.Z. This is currently only
451 implemented for Linux.
453 * the sockaddr_in6 structure changed. The IPv6 working group added a new
454 field sin6_scope_id. This means that all programs using IPv6 should be
455 recompiled. Don't expect binary compatibility with previous glibc
456 versions.
458 * various conversion modules for IBM character sets contributed by
459 Masahide Washizawa.
461 * IA-64 port by Jes Sorensen and HJ Lu.
463 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
464 Compiling the GNU C Library for Linux/ia64
465 ******************************************
467 Please refer to the file INSTALL in the same directory as you found
468 this file for general information about configuring and compiling
469 glibc.
471 For general inquiries about glibc under Linux/ia64 please use the
472 following mailing list linux-ia64@linuxia64.org or one of the relevant
473 glibc mailing lists.
475 Recommended Tools for Compilation
476 =================================
478 In order for glibc-2.2 to build correctly on the ia64 you need at
479 least the following versions of the GNU tools (the :
481 * The Cygnus toolchain snapshot for the ia64 as of August 4
482 including the provided set of patches. It is however recommend
483 you use the October 24 toolchain snapshot or a more recent version.
485 OR alternatively you can try the following (the Cygnus toolchain is
486 the recommended solution):
488 * GCC and binutils, GAS and GNU LD out of CVS from
489 sources.redhat.com as of August 28, 2000 or later. The CVS tree
490 may require special patches to work properly on the ia64.
492 Configuring and compiling GNU Libc for Linux/ia64
493 =================================================
495 The library requires Linux kernel version 2.4.0-test4-000728 or
496 later to funtion properly. Besides that it support for debug libraries
497 is currently untested. Hence the following options
498 are required for configuring the library:
500 --disable-debug --enable-kernel=2.4.0
502 It is also important that you make sure the library picks up the
503 appropriate kernel header files, if you do not have recent enough
504 kernel headers in /usr/src/linux/include, you should use the
505 --with-headers=<path> option to specify the location.
507 As an example I personally use the following options to configure
508 the library:
510 --disable-debug
511 --disable-cvs
512 --enable-kernel=2.4.0
513 --host=ia64-linux
514 --enable-add-ons=yes
515 --prefix=/usr
516 --with-headers=/home/jes/linux/include
519 Good luck
521 Jes Sorensen <jes@linuxcare.com>,
522 November 14th, 2000
523 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
524 \f
525 Version 2.1.3
527 * bug fixes
529 \f
530 Version 2.1.2
532 * bug fixes
534 \f
535 Version 2.1.1
537 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
539 * New xdr functions are added; some rpc functions are now 64bit clean.
541 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
543 * Fixed known incompatibilities with glibc 2.0.
545 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
547 * Optimized a number of functions (especially the ELF dynamic loader).
549 * Update timezone data files.
551 * lots of charmaps corrections
553 * some new locale definitions and charmaps
555 \f
556 Version 2.1
558 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
559 conform to POSIX member type requirements. Symbol versions have been
560 adjusted as needed within the library, and for direct use by applications,
561 but there is potential for problems if third-party libraries use
562 struct timeval as part of their interface. This does not present
563 a problem for X and other "essential" system libraries.
565 * An additional locale model to support C++ Standard Library locale
566 model and probably more was implemented by Ulrich Drepper.
568 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
569 symbol level.
571 * Miles Bader provided the `argp' function family to support hierachical
572 command line argument parsing, layered on top of getopt.
574 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
576 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
577 numbers.
579 * scanf recognizes the %a and %A format for scanning floating point numbers.
581 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
582 information and interfaces for the available integer types.
584 * about 130 new math functions were added to implement the ISO C9x math
585 library.
587 * the new header <complex.h> contains definitions of the complex math
588 functions from ISO C 9X.
590 * the new header <tgmath.h> defines generic macros to use complex or
591 real valued functions.
593 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
595 * Andreas Jaeger provided a test suite for the math library.
597 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
599 * Ulrich Drepper added character set conversion functions (iconv).
601 * Optimized string functions have been added.
603 * The localedata addon is now part of glibc.
605 * An implementation of profiling shared libraries was added by Ulrich Drepper.
607 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
608 daemon for NSS (nscd).
610 Missing a better place here are some numbers on improvements. Under
611 Linux 2.1.125 un-tar-ing the kernel sources takes
613 user system wall
615 using local files 12.19s 6.88s 22.91s
617 using NIS 13.92s 8.91s 26.34s
619 using NIS & nscd 10.37s 7.34s 25.30s
621 using NIS+ 27.57s 30.37s 640.46s
623 using NIS+ & nscd 10.25s 7.83s 26.51s
625 using NIS & old nscd [1] 13.83s 8.32s 29.60s
627 Keep in mind that non-namelookup related operations dominate above times.
628 It was just a common complain that using NIS+ unpacking the kernel is
629 horribly slow.
631 [1] The old nscd implementation is not available anymore since it was
632 distributed with glibc up to version 2.0.98 and thus is now replaced.
634 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
636 * Mark Kettenis provided a Hesiod NSS module.
638 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
639 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
641 * rcmd can now handle netgroups (Dick Streefland).
643 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
644 Bambrough.
646 * Support for the IPv6 protocol has been added to the socket API, as per the
647 latest draft standards.
649 * Support for Linux 2.2 has been added.
651 * Interface changes relative to the latest 2.0.x release:
652 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
653 addseverity NEW: Unix98
654 alphasort64 NEW: LFS
655 argp_err_exit_status NEW: argp, GNU ext
656 argp_error NEW: argp, GNU ext
657 argp_failure NEW: argp, GNU ext
658 argp_help NEW: argp, GNU ext
659 argp_parse NEW: argp, GNU ext
660 argp_program_bug_address NEW: argp, GNU ext
661 argp_program_version NEW: argp, GNU ext
662 argp_program_version_hook NEW: argp, GNU ext
663 argp_state_help NEW: argp, GNU ext
664 argp_usage NEW: argp, GNU ext
665 authdes_create NEW: Secure RPC
666 authdes_getucred NEW: Secure RPC
667 authdes_pk_create NEW: Secure RPC
668 backtrace NEW: GNU ext.
669 backtrace_symbols NEW: GNU ext.
670 backtrace_symbols_fd NEW: GNU ext.
671 cacos NEW: ISO C 9x
672 cacosf NEW: ISO C 9x
673 cacosh NEW: ISO C 9x
674 cacoshf NEW: ISO C 9x
675 cacoshl NEW: ISO C 9x
676 cacosl NEW: ISO C 9x
677 capget NEW: kernel
678 capset NEW: kernel
679 carg NEW: ISO C 9x
680 cargf NEW: ISO C 9x
681 cargl NEW: ISO C 9x
682 casin NEW: ISO C 9x
683 casinf NEW: ISO C 9x
684 casinh NEW: ISO C 9x
685 casinhf NEW: ISO C 9x
686 casinhl NEW: ISO C 9x
687 casinl NEW: ISO C 9x
688 catan NEW: ISO C 9x
689 catanf NEW: ISO C 9x
690 catanh NEW: ISO C 9x
691 catanhf NEW: ISO C 9x
692 catanhl NEW: ISO C 9x
693 catanl NEW: ISO C 9x
694 cbc_crypt NEW: Secure RPC
695 ccos NEW: ISO C 9x
696 ccosf NEW: ISO C 9x
697 ccosh NEW: ISO C 9x
698 ccoshf NEW: ISO C 9x
699 ccoshl NEW: ISO C 9x
700 ccosl NEW: ISO C 9x
701 cexp NEW: ISO C 9x
702 cexpf NEW: ISO C 9x
703 cexpl NEW: ISO C 9x
704 cimag NEW: ISO C 9x
705 cimagf NEW: ISO C 9x
706 cimagl NEW: ISO C 9x
707 clearerr_locked REMOVED
708 clntunix_create NEW: sunrpc ext
709 clog NEW: ISO C 9x
710 clog10 NEW: ISO C 9x
711 clog10f NEW: ISO C 9x
712 clog10l NEW: ISO C 9x
713 clogf NEW: ISO C 9x
714 clogl NEW: ISO C 9x
715 conj NEW: ISO C 9x
716 conjf NEW: ISO C 9x
717 conjl NEW: ISO C 9x
718 cpow NEW: ISO C 9x
719 cpowf NEW: ISO C 9x
720 cpowl NEW: ISO C 9x
721 cproj NEW: ISO C 9x
722 cprojf NEW: ISO C 9x
723 cprojl NEW: ISO C 9x
724 creal NEW: ISO C 9x
725 crealf NEW: ISO C 9x
726 creall NEW: ISO C 9x
727 creat64 NEW: LFS
728 csin NEW: ISO C 9x
729 csinf NEW: ISO C 9x
730 csinh NEW: ISO C 9x
731 csinhf NEW: ISO C 9x
732 csinhl NEW: ISO C 9x
733 csinl NEW: ISO C 9x
734 csqrt NEW: ISO C 9x
735 csqrtf NEW: ISO C 9x
736 csqrtl NEW: ISO C 9x
737 ctan NEW: ISO C 9x
738 ctanf NEW: ISO C 9x
739 ctanh NEW: ISO C 9x
740 ctanhf NEW: ISO C 9x
741 ctanhl NEW: ISO C 9x
742 ctanl NEW: ISO C 9x
743 des_setparity NEW: Secure RPC
744 ecb_crypt NEW: Secure RPC
745 endutxent NEW: Unix98
746 exp10 NEW: ISO C 9x
747 exp10f NEW: ISO C 9x
748 exp10l NEW: ISO C 9x
749 exp2 NEW: ISO C 9x
750 exp2f NEW: ISO C 9x
751 exp2l NEW: ISO C 9x
752 fattach NEW: STREAMS
753 fdetach NEW: STREAMS
754 fdim NEW: ISO C 9x
755 fdimf NEW: ISO C 9x
756 fdiml NEW: ISO C 9x
757 feclearexcept NEW: ISO C 9x
758 fegetenv NEW: ISO C 9x
759 fegetexceptflag NEW: ISO C 9x
760 fegetround NEW: ISO C 9x
761 feholdexcept NEW: ISO C 9x
762 feof_locked REMOVED
763 feraiseexcept NEW: ISO C 9x
764 ferror_locked REMOVED
765 fesetenv NEW: ISO C 9x
766 fesetexceptflag NEW: ISO C 9x
767 fesetround NEW: ISO C 9x
768 fetestexcept NEW: ISO C 9x
769 feupdateenv NEW: ISO C 9x
770 fflush_locked REMOVED
771 ffsl NEW: GNU ext.
772 ffsll NEW: GNU ext.
773 fgetpos64 NEW: LFS
774 fgets_unlocked NEW: GNU ext.
775 fileno_locked REMOVED
776 fma NEW: ISO C 9x
777 fmaf NEW: ISO C 9x
778 fmal NEW: ISO C 9x
779 fmax NEW: ISO C 9x
780 fmaxf NEW: ISO C 9x
781 fmaxl NEW: ISO C 9x
782 fmin NEW: ISO C 9x
783 fminf NEW: ISO C 9x
784 fminl NEW: ISO C 9x
785 fmtmsg NEW: Unix98
786 fopen64 NEW: LFS
787 fputc_locked REMOVED
788 fputs_unlocked NEW: GNU ext.
789 fread_unlocked NEW: GNU ext.
790 freopen64 NEW: LFS
791 fseeko NEW: Unix98
792 fsetpos64 NEW: LFS
793 fstatfs64 NEW: LFS
794 fstatvfs NEW: Unix98
795 fstatvfs64 NEW: LFS
796 ftello NEW: Unix98
797 ftello64 NEW: LFS
798 ftruncate64 NEW: LFS
799 ftw64 NEW: LFS
800 fwrite_unlocked NEW: GNU ext.
801 gai_strerror NEW: IPv6
802 gamma_r REMOVED
803 gammaf_r REMOVED
804 gammal_r REMOVED
805 getchar_locked REMOVED
806 getdate NEW: Unix98
807 getdate_err NEW: Unix98
808 getdate_r NEW: GNU ext.
809 getmsg NEW: STREAMS
810 getnameinfo NEW: IPv6
811 getnetname NEW: Secure RPC
812 getpmsg NEW: STREAMS
813 getpt NEW: Unix98 PTY
814 getrlimit64 NEW: LFS
815 getutxent NEW: Unix98
816 getutxid NEW: Unix98
817 getutxline NEW: Unix98
818 glob64 NEW: GNU ext.
819 globfree64 NEW: GNU ext.
820 gnu_get_libc_release NEW: GNU ext.
821 gnu_get_libc_version NEW: GNU ext.
822 grantpt NEW: Unix98 PTY
823 host2netname NEW: Secure RPC
824 iconv NEW: iconv
825 iconv_close NEW: iconv
826 iconv_open NEW: iconv
827 if_freenameindex NEW: IPv6
828 if_indextoname NEW: IPv6
829 if_nameindex NEW: IPv6
830 if_nametoindex NEW: IPv6
831 in6addr_any NEW: IPv6
832 in6addr_loopback NEW: IPv6
833 inet6_isipv4mapped NEW: IPv6
834 isastream NEW: STREAMS
835 iswblank NEW: GNU ext.
836 key_decryptsession NEW: Secure RPC
837 key_decryptsession_pk NEW: Secure RPC
838 key_encryptsession NEW: Secure RPC
839 key_encryptsession_pk NEW: Secure RPC
840 key_gendes NEW: Secure RPC
841 key_get_conv NEW: Secure RPC
842 key_secretkey_is_set NEW: Secure RPC
843 key_setnet NEW: Secure RPC
844 key_setsecret NEW: Secure RPC
845 llrint NEW: ISO C 9x
846 llrintf NEW: ISO C 9x
847 llrintl NEW: ISO C 9x
848 llround NEW: ISO C 9x
849 llroundf NEW: ISO C 9x
850 llroundl NEW: ISO C 9x
851 log2 NEW: ISO C 9x
852 log2f NEW: ISO C 9x
853 log2l NEW: ISO C 9x
854 lrint NEW: ISO C 9x
855 lrintf NEW: ISO C 9x
856 lrintl NEW: ISO C 9x
857 lround NEW: ISO C 9x
858 lroundf NEW: ISO C 9x
859 lroundl NEW: ISO C 9x
860 lseek64 NEW: LFS
861 makecontext NEW: Unix98
862 mempcpy NEW: GNU ext.
863 mmap64 NEW: LFS
864 moncontrol REMOVED
865 modify_ldt NEW: kernel
866 nan NEW: ISO C 9x
867 nanf NEW: ISO C 9x
868 nanl NEW: ISO C 9x
869 nearbyint NEW: ISO C 9x
870 nearbyintf NEW: ISO C 9x
871 nearbyintl NEW: ISO C 9x
872 netname2host NEW: Secure RPC
873 netname2user NEW: Secure RPC
874 nexttoward NEW: ISO C 9x
875 nexttowardf NEW: ISO C 9x
876 nexttowardl NEW: ISO C 9x
877 nftw NEW: Unix98
878 nftw64 NEW: LFS
879 open64 NEW: LFS
880 passwd2des NEW: Secure RPC
881 pow10 NEW: GNU ext.
882 pow10f NEW: GNU ext.
883 pow10l NEW: GNU ext.
884 pread NEW: Unix98
885 pread64 NEW: LFS
886 printf_size NEW: GNU ext.
887 printf_size_info NEW: GNU ext.
888 profil_counter REMOVED
889 pthread_mutexattr_getkind_np REPLACED
890 pthread_mutexattr_setkind_np REPLACED
891 ptsname NEW: Unix98 PTY
892 ptsname_r NEW: Unix98 PTY
893 putc_locked REMOVED
894 putchar_locked REMOVED
895 putgrent NEW: GNU ext.
896 putmsg NEW: STREAMS
897 putpmsg NEW: STREAMS
898 pututxline NEW: Unix98
899 pwrite NEW: Unix98
900 pwrite64 NEW: LFS
901 readdir64 NEW: LFS
902 readdir64_r NEW: LFS
903 remquo NEW: ISO C 9x
904 remquof NEW: ISO C 9x
905 remquol NEW: ISO C 9x
906 round NEW: ISO C 9x
907 roundf NEW: ISO C 9x
908 roundl NEW: ISO C 9x
909 rtime NEW: GNU ext.
910 scalbln NEW: ISO C 9x
911 scalblnf NEW: ISO C 9x
912 scalblnl NEW: ISO C 9x
913 scandir64 NEW: LFS
914 sendfile NEW: kernel
915 setcontext NEW: Unix98
916 setrlimit64 NEW: LFS
917 setutxent NEW: Unix98
918 sighold NEW: Unix98
919 sigignore NEW: Unix98
920 sigqueue NEW: POSIX.1b
921 sigrelse NEW: Unix98
922 sigset NEW: POSIX.1b
923 sigtimedwait NEW: POSIX.1b
924 sigwaitinfo NEW: POSIX.1b
925 sincos NEW: GNU ext.
926 sincosf NEW: GNU ext.
927 sincosl NEW: GNU ext.
928 statfs64 NEW: LFS
929 statvfs NEW: Unix98
930 statvfs64 NEW: LFS
931 strcasestr NEW: GNU ext.
932 strtoimax NEW: ISO C 9x
933 strtoumax NEW: ISO C 9x
934 strverscmp NEW: GNU ext.
935 svcauthdes_stats NEW: Secure RPC
936 svcunix_create NEW: sunrpc etx
937 svcunixfd_create NEW: sunrpc ext
938 swapcontext NEW: Unix98
939 tcgetsid NEW: Unix98 PTY
940 tdestroy NEW: GNU ext.
941 tgamma NEW: ISO C 9x
942 tgammaf NEW: ISO C 9x
943 tgammal NEW: ISO C 9x
944 tmpfile64 NEW: LFS
945 trunc NEW: ISO C 9x
946 truncate64 NEW: LFS
947 truncf NEW: ISO C 9x
948 truncl NEW: ISO C 9x
949 umount2 NEW: kernel
950 unlockpt NEW: Unix98 PTY
951 updwtmpx NEW: Unix98
952 user2netname NEW: Secure RPC
953 utmpxname NEW: Unix98
954 versionsort NEW: GNU ext.
955 versionsort64 NEW: GNU ext.
956 waitid NEW: Unix98
957 wcscasecmp NEW: GNU ext.
958 wcsncasecmp NEW: GNU ext.
959 wcsnlen NEW: GNU ext.
960 wcstoimax NEW: ISO C 9x
961 wcstoll NEW: ISO C 9x
962 wcstoull NEW: ISO C 9x
963 wcstoumax NEW: ISO C 9x
964 wcswcs NEW: Unix98
965 wordexp NEW: POSIX.2
966 wordfree NEW: POSIX.2
967 write_profiling REMOVED
968 xdecrypt NEW: Secure RPC
969 xdr_authdes_cred NEW: Secure RPC
970 xdr_authdes_verf NEW: Secure RPC
971 xdr_cryptkeyarg NEW: Secure RPC
972 xdr_cryptkeyarg2 NEW: Secure RPC
973 xdr_cryptkeyres NEW: Secure RPC
974 xdr_getcredres NEW: Secure RPC
975 xdr_key_netstarg NEW: Secure RPC
976 xdr_key_netstres NEW: Secure RPC
977 xdr_keybuf NEW: Secure RPC
978 xdr_keystatus NEW: Secure RPC
979 xdr_netnamestr NEW: Secure RPC
980 xdr_sizeof NEW: Secure RPC
981 xdr_unixcred NEW: sunrpc ext
982 xencrypt NEW: Secure RPC
983 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
984 \f
985 Version 2.0.6
987 * more bug fixes
989 \f
990 Version 2.0.5
992 * more bug fixes
994 * inet_ntoa is thread-safe
996 * updwtmp is moved from libutil to libc
998 * rewrite of cbrt function
1000 * update of timezone data
1001 \f
1002 Version 2.0.4
1004 * more bug fixes
1005 \f
1006 Version 2.0.3
1008 * more bug fixes
1009 \f
1010 Version 2.0.2
1012 * more bug fixes
1014 * add atoll function
1016 * fix complex problems in Berkeley DB code
1018 * fix math functions
1019 \f
1020 Version 2.0.1
1022 * fixed lots of header problems (especially Linux/GNU specific)
1024 * dynamic loader preserves all registers
1026 * Roland McGrath provided support for handling of auxiliary objects in
1027 the ELF dynamic loader.
1029 * support for parallel builds is improved
1030 \f
1031 Version 2.0
1033 * GNU extensions are no longer declared by default. To enable them you
1034 must define the macro `_GNU_SOURCE' in your program or compile with
1035 `-D_GNU_SOURCE'.
1037 * The library has changed from using GNU ld symbol aliases to using weak
1038 symbols where available. The ELF object file format supports weak
1039 symbols; GNU ld also supports weak symbols in the a.out format. (There
1040 is also now support for other GNU ld extensions in ELF. Use the
1041 `--with-elf' option to configure to indicate you have ELF, and
1042 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1043 of many files which contained only symbol aliases, reducing the size of
1044 the source and the compiled library; many other files were renamed to
1045 less cryptic names previously occupied by the symbol alias files.
1046 There is a new header file <elf.h> for programs which operate on
1047 files in the ELF format.
1049 * Converted to Autoconf version 2, so `configure' has more options.
1050 Run `configure --help' to see the details.
1052 * The library can now be configured to build profiling, highly-optimized
1053 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1054 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1055 `configure' enable building these extra libraries. The shared library is
1056 built by default when using both ELF and GNU ld. When shared libraries
1057 are enabled, the new library `-ldl' is available for arbitrary run-time
1058 loading of shared objects; its interface is defined in <dlfcn.h>. The
1059 new header file <link.h> gives access to the internals of the run-time
1060 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1061 application of same name on other systems and it provides information
1062 about dynamically linked binaries.
1064 * The C library now provides the run-time support code for profiling
1065 executables compiled with `-pg'. Programs can control the profiling code
1066 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1067 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1068 the support for this file format was contributed by David Mosberger-Tang.
1070 * The math code has been replaced with a math library based on fdlibm from
1071 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1072 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1073 functions. The math functions now reside in a separate library, so
1074 programs using them will need to use `-lm' their linking commands.
1076 * John C. Bowman contributed optimized ix87 assembler inline functions.
1078 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1079 mechanism similar to that found in Solaris 2. This is now used for the
1080 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1081 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1082 file controls what services are used for each individual database. This
1083 works by loading shared libraries with names specified in `nsswitch.conf',
1084 so service modules can be changed or added at any time without even
1085 relinking any program. Currently there are the file, db, and NIS based
1086 NSS services available.
1088 * The new functions `strtoq' and `strtouq' parse integer values from
1089 strings, like `strtol' and `strtoul', but they return `long long int' and
1090 `unsigned long long int' values, respectively (64-bit quantities).
1092 * The new functions `strtof' and `strtold' parse floating-point values from
1093 strings, like `strtod', but they return `float' and `long double' values,
1094 respectively (on some machines `double' and `long double' are the same).
1096 * Ulrich Drepper has contributed new implementations of the floating-point
1097 printing and reading code used in the `printf' family of functions and
1098 `strtod', `strtof', and `strtold'. These new functions are perfectly
1099 accurate, and much faster than the old ones.
1101 * The implementation of the POSIX locale model was completely rewritten by
1102 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1103 to compile the POSIX locale definition.
1105 * The former dummy implementations of the strcoll and strxfrm function are
1106 now replaced by fully functional code contributed by Ulrich Drepper. The
1107 collation information comes from the POSIX locale definitions.
1109 * The new header <langinfo.h> defines an interface for accessing
1110 various locale-dependent data (using the locale chosen with `setlocale').
1112 * Ulrich Drepper has contributed a new suite of functions for operation on
1113 wide-character and multibyte-character strings, in <wchar.h>;
1114 and classification and case conversion of wide characters, in <wctype.h>.
1115 These new functions are conforming to the ISO C, Amendement 1 specification.
1117 * There is now a second implementation of the standard I/O library available.
1118 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1119 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1121 * You can now use positional parameter specifications in format strings
1122 for the `printf' and `scanf' families of functions. For example,
1123 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1124 ``Number 6, Mr Jones''. This is mainly useful when providing different
1125 format strings for different languages, whose grammars may dictate
1126 different orderings of the values being printed. To support this
1127 feature, the interface for `register_printf_handler' has changed; see
1128 the header file <printf.h> for details.
1130 * The `printf' and `scanf' families of functions now understand a new
1131 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1132 to group numbers as indicated by the locale; for `scanf' and friends, this
1133 says to accept as valid only a number with all the proper grouping
1134 separators in the right places. In the default "C" locale, numbers are
1135 not grouped; but locales for specific countries will define the usual
1136 conventions (i.e. separate thousands with `,' in the US locale).
1138 * The pgrp functions have been regularized, slightly incompatibly but much
1139 less confusingly. The core functions are now `getpgid' and `setpgid',
1140 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1141 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1142 provided for compatibility. There is no longer an incompatible `getpgrp'
1143 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1145 * The new header file <fts.h> and suite of functions simplify programs that
1146 operate on directory trees. This code comes from 4.4 BSD.
1148 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1149 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1150 NSS scheme used in glibc.
1152 * There is a new malloc debugging hook `__memalign_hook'.
1154 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1155 `unsigned int' in <sys/types.h>. These are for compatibility only and
1156 their use is discouraged.
1158 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1159 done differently, so that it works even without GNU ld.
1161 * New function `euidaccess' checks allowed access to a file like `access',
1162 but using the effective IDs instead of the real IDs.
1164 * The time zone data files have been updated for the latest and greatest
1165 local time conventions of the countries of the world.
1167 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1168 see <dirent.h>.
1170 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1171 for formatting floating-point numbers. They are provided only for
1172 compatibility; new programs should use `sprintf' instead. There are
1173 also equivalent function for the `long double' floating-point type and
1174 all functions also exist in a reentrant form.
1176 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1177 functions for maintaining the login-record files (primarily of use to
1178 system programs such as `login'), and convenient functions for
1179 allocating and initializing a pseudo-terminal (pty) device.
1181 * Ulrich Drepper has contributed new support for System V style
1182 shared memory and IPC on systems that support it.
1184 * Ulrich Drepper has contributed several miscellaneous new functions found
1185 in System V: The `hsearch' family of functions provide an effective
1186 implementation of hash tables; `a64l' and `l64a' provide a very simple
1187 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1188 number generator.
1190 * Ulrich Drepper has contributed new reentrant counterparts for the
1191 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1193 * Ulrich Drepper has contributed new, highly-optimized versions of several
1194 string functions for the i486/Pentium family of processors.
1196 * Ulrich Drepper has updated the Linux-specific code, based largely
1197 on work done in Hongjiu Lu's version of GNU libc for Linux.
1198 The GNU library now supports Linux versions 2.0.10 and later,
1199 using the ELF object file format (i[3456]86-*-linux).
1201 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1203 * David Mosberger-Tang and Richard Henderson have ported the C library
1204 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1205 dynamic linking support for ELF/Alpha.
1207 * Richard Henderson contributed several Alpha optimized assembler function
1208 for arithmetic and string handling.
1210 * Ulrich Drepper has contributed a new set of message catalog functions to
1211 support multiple languages using the <libintl.h> interface, for use with
1212 his new package GNU gettext. Translation volunteers have contributed
1213 catalogs of the library's messages in Spanish, German, and Korean.
1215 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1216 program and the `catgets' function for reading the catalog files it
1217 creates. (The <libintl.h> interface is preferred; we include the
1218 <nl_types.h> interface using `catgets' only for source compatibility with
1219 programs already written to use it.)
1221 * New header file <values.h> gives SVID-compatible names for <limits.h>
1222 constants.
1224 * Various new macros, declarations, and small header files for compatibility
1225 with 4.4 BSD.
1227 * New function `group_member' is a convenient way to check if a process has
1228 a given effective group ID.
1230 * When using GCC 2.7 and later, the socket functions are now declared in a
1231 special way so that passing an argument of type `struct sockaddr_in *',
1232 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1233 `struct sockaddr *' type, does not generate a type-clash warning.
1235 * New function `error' declared in header file <error.h> is a convenient
1236 function for printing error messages and optionally exiting; this is the
1237 canonical function used in GNU programs. The new functions `err', `warn',
1238 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1239 doing the same thing.
1241 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1242 POSIX.2 `glob' function to do ~ and {...} expansion.
1244 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1245 `clearenv' which is used in POSIX.9 is also available.
1247 * New function `getsid' returns session ID number on systems that support it.
1249 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1250 files <db.h> and <mpool.h> provide a rich set of functions for several
1251 types of simple databases stored in memory and in files, and <ndbm.h> is
1252 an old `ndbm'-compatible interface using the `db' functions. Link with
1253 `-ldb' to get these functions.
1255 * New macro `strdupa' copies a string like `strdup', but uses local stack
1256 space from `alloca' instead of dynamic heap space from `malloc'.
1258 * New function `strnlen' is like `strlen' but searches only a given maximum
1259 number of characters for the null terminator. `stpncpy', `strndup' and
1260 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1261 function.
1263 * New function `statfs' in header <sys/statfs.h>.
1265 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1266 provide convenient functions for operating on blocks of null-terminated
1267 strings.
1269 * A new suite of functions in <utmp.h> handle all the details of reading
1270 and writing the utmp file.
1272 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1273 Thorsten Kukuk.
1275 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1276 completely POSIX compliant and also implemented the extended functionality
1277 to handle alternate digit representation and alternate era date formats.
1279 * Ulrich Drepper provided an implementation of the `strptime' function
1280 defined in XPG4.2 which transforms a string into a `struct tm' value.
1282 * Paul Eggert provided the tzselect shell script as part of the timezone
1283 code. The shell script makes it easy to select the correct timezone
1284 specification.
1286 * The implementation of the malloc family of functions is completely replaced
1287 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1288 The implementation uses the mmap function (if available) and it is
1289 optimized for the use in multi threaded programs.
1291 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1292 functions. This new functionality is usable by specifying a special
1293 salt string and it is compatible with implementation on *BSD systems.
1295 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1296 `getsubopt' to handle second level command line options, `bsd_signal'
1297 to access BSD style `signal' functionality, the obsolete `regexp' style
1298 expression matcher.
1300 * the `lchown' function is available on system which support this
1301 functionality.
1303 * The implementation of the shadow password handling function was contributed
1304 by Ulrich Drepper.
1306 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1308 * POSIX.1g support was added. The <sys/select.h> header is available,
1309 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1310 implementation of `getaddrinfo'.
1311 \f
1312 Version 1.09
1314 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1316 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1317 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1319 * The new function `daemon' from 4.4 BSD is useful for server programs that
1320 want to put themselves in the background.
1322 * Joel Sherrill has contributed support for several standalone boards that
1323 run without an operating system.
1325 * `printf', `scanf' and friends now accept a `q' type modifier for long
1326 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1328 * All of the code taken from BSD (notably most of the math and networking
1329 routines) has been updated from the BSD 4.4-Lite release.
1331 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1333 * The new functions `getdomainname' and `setdomainname' fetch or change the
1334 YP/NIS domain name. These are system calls which exist on systems which
1335 have YP (aka NIS).
1337 * The time zone data files have been updated for the latest international
1338 conventions.
1340 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1341 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1342 \f
1343 Version 1.08
1345 * The C library now includes support for Sun RPC, from Sun's free
1346 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1347 are included. (There is still no support for YP.)
1349 * Tom Quinn has contributed a port of the C library to SGI machines running
1350 Irix 4 (mips-sgi-irix4).
1352 * The new `lockf' function is a simplified interface to the locking
1353 facilities of `fcntl', included for compatibility.
1355 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1357 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1359 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1360 compatibility.
1362 * The error message printed by `assert' for a failed assertion now includes
1363 the name of the program (if using GNU ld) and the name of the calling
1364 function (with versions of GCC that support this).
1366 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1368 * The library now includes the <sys/mman.h> header file and memory
1369 management functions `mmap', `munmap', `mprotect', `msync', and
1370 `madvise', on systems that support those facilities.
1372 * The interface for `mcheck' has changed slightly: the function called to
1373 abort the program when an allocation inconsistency is detected now takes
1374 an argument that indicates the type of failure. The new function
1375 `mprobe' lets you request a consistency check for a particular block at
1376 any time (checks are normally done only when you call `free' or `realloc'
1377 on a block).
1379 * It is now possible to easily cross-compile the C library, building on one
1380 system a library to run on another machine and/or operating system. All
1381 you need to do is set the variable `HOST_CC' in `configparms' to the
1382 native compiler for programs to run on the machine you are building on (a
1383 few generator programs are used on Unix systems); set `CC' to the
1384 cross-compiler.
1386 * The new function `fexecve' (only implemented on the GNU system) executes
1387 a program file given a file descriptor already open on the file.
1388 \f
1389 Version 1.07
1391 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1392 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1394 * You can set the variable `libprefix' in `configparms' to specify a prefix
1395 to be prepended to installed library files; this makes it easy to install
1396 the GNU C library to be linked as `-lgnuc' or whatever.
1398 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1399 copies a limited number of characters from a string, and returns the
1400 address of the last character written.
1402 * You no longer need to check for whether the installed `stddef.h' is
1403 compatible with the GNU C library. configure now checks for you.
1405 * You can now define a per-stream `fileno' function to convert the
1406 stream's cookie into an integral file descriptor.
1408 * ``malloc (0)'' no longer returns a null pointer. Instead, it
1409 allocates zero bytes of storage, and returns a unique pointer which
1410 you can pass to `realloc' or `free'. The behavior is undefined if
1411 you dereference this pointer.
1413 * The C library now runs on Sony NEWS m68k machines running either
1414 NewsOS 3 or NewsOS 4.
1416 * The new `syscall' function is a system-dependent primitive function
1417 for invoking system calls. It has the canonical behavior on Unix
1418 systems, including unreliable return values for some calls (such as
1419 `pipe', `fork' and `getppid').
1421 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
1422 to `EAGAIN', which is the preferred name. On systems whose kernels
1423 use two distinct codes, the C library now translates EWOULDBLOCK to
1424 EAGAIN in every system call function.
1425 \f
1426 Version 1.06
1428 * The GNU C Library Reference Manual is now distributed with the library.
1429 `make dvi' will produce a DVI file of the printed manual.
1430 `make info' will produce Info files that you can read on line using C-h i
1431 in Emacs or the `info' program.
1432 Please send comments on the manual to bug-glibc-manual@gnu.org.
1434 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
1436 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
1438 * Jason Merrill has contributed a port to the Sequent Symmetry running
1439 Dynix version 3 (i386-sequent-dynix).
1441 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
1442 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
1444 * New function `memory_warnings' lets you arrange to get warnings when
1445 malloc is running out of memory to allocate, like Emacs gives you.
1447 * The C library now contains the relocating allocator used in Emacs 19 for
1448 its editing buffers. This allocator (ralloc) minimizes allocation
1449 overhead and fragmentation by moving allocated regions around whenever it
1450 needs to. You always refer to a ralloc'd region with a "handle" (a
1451 pointer to a pointer--an object of type `void **').
1453 * There is a new `printf' format: `%m' gives you the string corresponding
1454 to the error code in `errno'.
1456 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
1457 or `%[' conversion, but instead of filling in a fixed-sized buffer you
1458 pass, the `a' modifier says to fill in a `char **' you pass with a
1459 malloc'd string.
1461 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
1462 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
1463 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
1465 * `mkstemp' is a traditional Unix function to atomically create and open a
1466 uniquely-named temporary file.
1467 \f
1468 Version 1.05
1470 * The standard location for the file that says what the local timezone is
1471 has changed again. It is now `/usr/local/etc/localtime' (or more
1472 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
1474 * The distribution no longer contains any files with names longer than 14
1475 characters.
1477 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
1478 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
1480 * New functions `ttyslot' and `syslog' from 4.4 BSD.
1481 \f
1482 Version 1.04
1484 * The configuration process has changed quite a bit. The `configure'
1485 script is now used just like the configuration scripts for other GNU
1486 packages. The `sysdeps' directory hierarchy is much rearranged.
1487 The file `INSTALL' explains the new scheme in detail.
1489 * The header files no longer need to be processed into ANSI C and
1490 traditional C versions. There is just one set of files to install, and
1491 it will work with ANSI or old C compilers (including `gcc -traditional').
1493 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
1494 MIPS DECStation running Ultrix 4.
1496 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
1497 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
1498 made itself into a shared library.
1500 * Yet further improved support for the i386, running 4.3 BSD-like systems
1501 (such as Mach 3 with the Unix single-server), or System V.
1503 * New function `strncasecmp' to do case-insensitive string comparison
1504 with limited length.
1506 * New function `strsep' is a reentrant alternative to `strtok'.
1508 * New functions `scandir' and `alphasort' for searching directories.
1510 * New function `setenv' is a better interface to `putenv'.
1512 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
1513 function for traversing a directory tree.
1515 * The GNU obstack package is now also part of the C library.
1516 The new function `open_obstack_stream' creates a stdio stream that
1517 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
1518 formatted output directly to an obstack.
1520 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
1521 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
1523 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
1525 * The new functions `strfry' and `memfrob' do mysterious and wonderful
1526 things to your strings.
1528 * There are some new test programs: test-fseek, testmb, and testrand.
1530 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
1531 These ports are not finished, but are a good starting place for really
1532 supporting those systems.
1534 * `/etc/localtime' is now the standard location for the file that says what
1535 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
1536 This follows the general principle that `/etc' is the place for all local
1537 configuration files.
1539 * The C library header files now use `extern "C"' when used by the C++
1540 compiler, so the C library should now work with C++ code.
1542 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
1543 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
1544 in <strings.h>.)
1546 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
1547 function which uses the `merge sort' algorithm, and is said to be
1548 significantly faster than the old GNU `qsort' function. Merge sort is
1549 now the standard `qsort' function. The new algorithm can require a lot
1550 of temporary storage; so, the old sorting function is called when the
1551 required storage is not available.
1553 * The C library now includes Michael Glad's Ultra Fast Crypt, which
1554 provides the Unix `crypt' function, plus some other entry points.
1556 * The code and header files taken from 4.4 BSD have been updated with the
1557 latest files released from Berkeley.
1558 \f
1559 ----------------------------------------------------------------------
1560 Copyright information:
1562 Copyright (C) 1992-1999,2000,2001,2002,2003,2004,2005,2006
1563 Free Software Foundation, Inc.
1565 Permission is granted to anyone to make or distribute verbatim copies
1566 of this document as received, in any medium, provided that the
1567 copyright notice and this permission notice are preserved,
1568 thus giving the recipient permission to redistribute in turn.
1570 Permission is granted to distribute modified versions
1571 of this document, or of portions of it,
1572 under the above conditions, provided also that they
1573 carry prominent notices stating who last changed them.
1574 \f
1575 Local variables:
1576 version-control: never
1577 End: