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1 GNU C Library NEWS -- history of user-visible changes. 2006-05-01
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, vmsplace.
15 * New iconv module for MIK. Contributed by Alexander Shopov.
17 \f
18 Version 2.4
20 * More overflow detection functions.
22 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
23 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
25 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
26 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
27 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
28 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
29 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
30 by Masahide Washizawa.
32 * It is now possible to install audit libraries for the dynamic linker using
33 LD_AUDIT. Implemented by Ulrich Drepper.
35 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
36 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
37 For a libc and libpthread that works well on Linux 2.4 kernels, we
38 recommend using the stable 2.3 branch.
40 * The new function open_wmemstream acts like open_memstream,
41 but uses a wchar_t wide character buffer.
43 * The new function ppoll is an improved version of poll, similar to pselect.
45 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
46 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
47 renameat, unlinkat, linkat, symlinkat, readlinkat.
49 * New Linux kernel system calls: unshare,
50 inotify_init, inotify_add_watch, inotify_rm_watch.
52 * The euidaccess function is now also known by the alias eaccess,
53 for compatibility with some other systems.
55 * Timezone data updated to 2006b version.
56 \f
57 Version 2.3.6
59 * The following bugs are resolved with this release:
61 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
62 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
63 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
64 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
65 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
66 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
68 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
70 * As of this release, GCC 4 can be used to compile the C Library.
72 * Timezone data updated to 2005m version.
73 \f
74 Version 2.3.5
76 * The following bugs are resolved with this release:
78 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
79 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
80 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
81 777, 787, 821, 822, 823, 825
83 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
84 \f
85 Version 2.3.4
87 * Support for RFC 3678. Real implementations exist only for Linux so far.
88 Implemented by Ulrich Drepper.
90 * nscd can now cache entries persistently. Expiring entries are reloaded.
91 For speedups the cache can be shared in memory with client processes.
92 Implemented by Ulrich Drepper.
94 * nscd can now perform SELinux checks.
95 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
97 * getaddrinfo queries are now cached. Canonical name lookup is performed
98 efficiently.
99 Implemented by Ulrich Drepper.
101 * The nothrow function attribute is used when headers are used by gcc when
102 compiling C code. This can avoid significant amounts of exception
103 handling data.
105 * The malloc functions perform more error checking and are stricter when
106 it comes to reacting on errors. The default action is to terminate
107 the process after showing an error message. Implemented by Ulrich Drepper.
109 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
110 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
112 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
113 namespaces using the new function dlmopen(). This feature is of course,
114 like most other dynamic loading functionality, not available in statically
115 linked applications. Implemented by Ulrich Drepper.
117 * Low-overhead boundary checking variants of string and some stdio functions
118 were added. These are to be used in conjunction with a gcc patch by
119 Jakub Jelinek which adds calls to these functions if possible.
120 Implemented by Jakub Jelinek and Ulrich Drepper.
122 * Old code for several operating systems and machine architectures that
123 have not been in working condition in a long time have been removed from
124 the main source tree maintained by the GNU C Library's maintainers.
125 These files are now reside in the separate `ports' source module
126 that is usable as an add-on when building the library.
127 \f
128 Version 2.3.3
130 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
131 interrogate the dynamic linker, compatible with the Solaris interface.
133 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
134 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
136 * getifaddrs now uses the netlink interface on Linux to get its information.
137 Implemented by Thorsten Kukuk.
139 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
140 Implemented by Ulrich Drepper.
142 * support for non-executable stacks on x86 has been added. Changes mostly
143 by Roland McGrath.
145 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
146 and Ulrich Drepper.
148 * getaddrinfo now performs destination address selection according to
149 RFC 3484.
150 \f
151 Version 2.3.2
153 * Thread-safe interfaces for many functions that access locale data
154 were added in version 2.3, but these features were omitted from NEWS.
155 Many functions have variants with an `_l' suffix that take a `locale_t'
156 object as a parameter rather than consulting the current locale.
157 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
158 create and maintain `locale_t' objects. Additionally, the new function
159 `uselocale' sets "the current locale" (as used by functions not so
160 parameterized) set for an individual thread. These features were added
161 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
163 * The functions getresuid, getresgid, setresuid, and setresgid, which
164 have long been available on Linux, are now declared in <unistd.h>
165 and are now also available on the Hurd.
167 * ELF thread-local storage support (TLS) now works on x86-64.
169 * The new dynamic string token $LIB is expanded in shared library names.
170 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
172 * Aldy Hernandez contributed complete software floating point support for
173 PowerPC machines with no FPU.
175 * fexecve is implemented on Linux.
177 * The `btowc' function should work at least twice as fast due to
178 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
180 * With approriate thread add-ons cancelable functions are now implemented
181 in libc.so as well. No need to call the function in libpthread. This
182 change allowed to finally disable the incorrect and expensive handling
183 of weak definition in ld.so.
185 * Yet more PLT entries in libc.so have been removed. We finally arrived
186 at the bare minimum. Startup times improved appropriately.
188 * Support for the new Linux/x86 system call interface was added. The
189 AT_SYSINFO auxiliary vector entry is recognized and handled.
190 \f
191 Version 2.3
193 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
194 charsets.
196 * iconv (the program and the interface) now accepts empty names (excluding
197 options like //TRANSLIT) to mean "use charset of current locale".
199 * localedef can now transliterate characters in strings which are not in
200 the provided charmap. The information from the input locale is used.
202 * Prelinking support was added for ELF targets. This requires additional
203 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
205 * Read-only stdio streams now use mmap to speed up operation by eliminating
206 copying and buffer underflows. To use add 'm' to the mode string of
207 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
209 * The malloc functions were completely rewritten by Wolfram Gloger based
210 on Doug Lea's malloc-2.7.0.c.
212 * Isamu Hasegawa contributed a completely new and POSIX-conformant
213 implementation of regex.
215 * Bruno Haible upgraded the iconv and locale implementation to support
216 Unicode 3.2.
218 * Contents of the LC_* and LANG environment variables in the CEN style are
219 not recognized anymore. It never was used. Change by Ulrich Drepper.
221 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
222 thread-local storage (TLS) ABI on some platforms.
223 Changes by Ulrich Drepper. SH support by Kaz Kojima.
225 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
226 EUC-JISX0213, and TSCII.
228 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
229 BSD-compatible interface for getting all network interface addresses.
230 Implementation for IPv4 by Roland McGrath.
232 * Loading of locale data is faster due to the introduction of a locale
233 archive. Implemented by Roland McGrath and Ulrich Drepper.
235 * Startup times are significantly reduced by not using exported functions
236 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
237 and Ulrich Drepper.
239 * Steven Munroe contributed a port to PowerPC64/Linux.
240 \f
241 Version 2.2.6
243 * The Hurd now uses the GNU libio implementation of stdio rather than the
244 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
246 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
247 with the same behavior as the Linux system call of the same name.
248 \f
249 Version 2.2.5
251 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
252 128-bit long double format.
254 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
255 IBM1161, and IBM1162 charsets.
257 * Andreas Jaeger contributed a port to x86-64/Linux.
259 * Peter Bruin contributed a port to PowerPC/Hurd.
261 * libc functions using I/O streams now can handle wide-oriented streams
262 as well.
264 * optimizations in the dynamic linker. Binaries created by recent binutils
265 versions start up quicker due to reduced time spent on relocations.
267 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
268 \f
269 Version 2.2.4
271 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
272 asinh, atanh, j0 for the 128-bit long double format.
274 * Bruno Haible updated all the code handling Unicode in some form to
275 support Unicode 3.1.
277 * Speed of regex for single-byte locales is back to previous levels.
278 Patch by Isamu Hasegawa.
280 * Alpha, SPARC, and IA-64 now also using floating stacks.
282 * Startup time of internationalized applications greatly improved through
283 iconv cache. Use iconvconfig to generate the cache file.
284 Contributed by Ulrich Drepper.
286 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
287 severe performance problems. Patch by David Mosberger.
289 * The Hurd port got a lot more functionality like AIO, various stdio
290 extensions, etc. Mainly done by Roland McGrath.
292 * mtrace can now lookup symbols in shared libraries.
293 \f
294 Version 2.2.3
296 * Intel's IA-64 math library is largely integrated. It provides fast and
297 accurate implementatations for most basic and standard math functions
298 in float, double, and long double format.
300 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
301 and asin for the 96-bit long double format and asin, log, tan for the
302 128-bit long double format.
304 * The beginning of a last-bit accurate math library by IBM Haifa were added.
305 The basic double functions exist today. Contributed by Abraham Ziv
306 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
307 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
309 * An asynchronous name lookup library was added. The interface is designed
310 after POSIX AIO. The proposal was circulated beforehand to get comments.
311 No negative ones came in. Implemented by Ulrich Drepper.
313 * Port to S390/64bit contributed by Martin Schwidefsky
314 <schwidefsky@de.ibm.com>.
316 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
317 of functions for Linux/IA-64.
319 * The RPC code is now thread safe. Threads can now use the same service
320 of different services at the same time. Patch by Eric Norum
321 <eric.norum@usask.ca> with some help by Ulrich Drepper.
323 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
324 family of functions for Linux/S390.
326 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
327 of functions for Linux/x86.
329 * Port to Linux/CRIS contributed by Axis Communications.
330 \f
331 Version 2.2.2
333 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
334 we can now check for namespace violations and missing declarations. The
335 result is that almost all headers are now Unix-compliant (as defined in
336 the upcoming XPG6). The negative side is that some programs might need
337 corrections, too, if they depend on the incorrect form of the headers in
338 previous versions which defined too many symbols and included too many
339 other headers.
341 * regex now handles multibyte character sets correctly.
342 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
344 * iconv (the program) does now conform to the upcoming XPG6 and handles
345 charmaps. Instead of the charset names the path of charmaps can be
346 provided and the conversion happens based on this data.
347 Contributed by Ulrich Drepper.
349 * The locale program now provides detailed information about the installed
350 locales. While
352 locale -a
354 only lists the names of the supported locales
356 locale -a --verbose
358 provides details such as country, language, and codeset name.
359 Contributed by Ulrich Drepper.
360 \f
361 Version 2.2.1
363 * The gencat program now parses the input file according to the charset
364 selected by the LC_CTYPE category. This is important for stateful
365 character sets. To make generating catalogs easier there is a way
366 to overwrite the charset selected by the locale: before the first
367 message or $ quote line the catalog can contain a line like
369 $ codeset=ISO-8859-2
371 to select the charset (ISO-8859-2 in this case).
373 Implemented by Shinya Hanataka and Ulrich Drepper.
375 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
376 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
377 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
379 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
380 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
382 * The LANGUAGE environment variable is now ignored unless the locale is
383 changed from the default "C" locale.
385 * The usual bug fixes.
386 \f
387 Version 2.2
389 * Greg McGary added runtime support for bounds checking using gcc's
390 new -fbounded-pointers option. ix86 target is complete. PowerPC
391 is in progress.
393 * Thorsten Kukuk added secure mode support to nscd.
395 * The Berkeley db libraries have been removed.
397 Related, the nss_db module is now in a separate package since it
398 obviously requires a database library being available.
400 * Wide character I/O streams implemented by Ulrich Drepper.
402 * Functions from the extended socket API added by Ulrich Drepper.
404 * Functions feenableexcept and fedisableexcept to control the
405 behaviour of individual exceptions have been added by Andreas Jaeger.
407 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
409 * The resolver code has been updated from bind 8.2.3-T5B which supports
410 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
411 and Mark Kettenis.
413 This change could in some situations effect backward compatibility. Since
414 now `_res' is a thread-local instead of a global variable, modifying it
415 in one thread does not have any effect in other threads.
417 The resolver library was also extended to allow IPv6 as the transport
418 protocol for the requests. This work was done by Stig Venaas.
420 * Compatibility code for K&R C compilers has been removed from the
421 header files. A ISO C compiler is needed to use the library
422 (conforming to either C89 or C99 standard).
424 * Complete rewrite of the localedef program to support multibyte character
425 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
426 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
427 Implemented by Ulrich Drepper.
429 Bruno Haible significantly improved the generation and use of the data
430 structures for the wide character tables.
432 * Plural handling in gettext implemented by Ulrich Drepper.
434 * The utmp daemon has been removed.
436 * The port to MIPS-Linux has been finished by Andreas Jaeger.
438 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
439 and Yutaka Niibe.
441 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
443 * POSIX barriers implemented by Kaz Kylheku.
445 * POSIX spawn function family implemented by Ulrich Drepper.
447 * POSIX spinlocks are now available.
449 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
451 * the configure option --enable-kernel=X.Y.Z allows to strip out
452 compatibility for kernel versions before X.Y.Z. This is currently only
453 implemented for Linux.
455 * the sockaddr_in6 structure changed. The IPv6 working group added a new
456 field sin6_scope_id. This means that all programs using IPv6 should be
457 recompiled. Don't expect binary compatibility with previous glibc
458 versions.
460 * various conversion modules for IBM character sets contributed by
461 Masahide Washizawa.
463 * IA-64 port by Jes Sorensen and HJ Lu.
465 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
466 Compiling the GNU C Library for Linux/ia64
467 ******************************************
469 Please refer to the file INSTALL in the same directory as you found
470 this file for general information about configuring and compiling
471 glibc.
473 For general inquiries about glibc under Linux/ia64 please use the
474 following mailing list linux-ia64@linuxia64.org or one of the relevant
475 glibc mailing lists.
477 Recommended Tools for Compilation
478 =================================
480 In order for glibc-2.2 to build correctly on the ia64 you need at
481 least the following versions of the GNU tools (the :
483 * The Cygnus toolchain snapshot for the ia64 as of August 4
484 including the provided set of patches. It is however recommend
485 you use the October 24 toolchain snapshot or a more recent version.
487 OR alternatively you can try the following (the Cygnus toolchain is
488 the recommended solution):
490 * GCC and binutils, GAS and GNU LD out of CVS from
491 sources.redhat.com as of August 28, 2000 or later. The CVS tree
492 may require special patches to work properly on the ia64.
494 Configuring and compiling GNU Libc for Linux/ia64
495 =================================================
497 The library requires Linux kernel version 2.4.0-test4-000728 or
498 later to funtion properly. Besides that it support for debug libraries
499 is currently untested. Hence the following options
500 are required for configuring the library:
502 --disable-debug --enable-kernel=2.4.0
504 It is also important that you make sure the library picks up the
505 appropriate kernel header files, if you do not have recent enough
506 kernel headers in /usr/src/linux/include, you should use the
507 --with-headers=<path> option to specify the location.
509 As an example I personally use the following options to configure
510 the library:
512 --disable-debug
513 --disable-cvs
514 --enable-kernel=2.4.0
515 --host=ia64-linux
516 --enable-add-ons=yes
517 --prefix=/usr
518 --with-headers=/home/jes/linux/include
521 Good luck
523 Jes Sorensen <jes@linuxcare.com>,
524 November 14th, 2000
525 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
526 \f
527 Version 2.1.3
529 * bug fixes
531 \f
532 Version 2.1.2
534 * bug fixes
536 \f
537 Version 2.1.1
539 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
541 * New xdr functions are added; some rpc functions are now 64bit clean.
543 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
545 * Fixed known incompatibilities with glibc 2.0.
547 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
549 * Optimized a number of functions (especially the ELF dynamic loader).
551 * Update timezone data files.
553 * lots of charmaps corrections
555 * some new locale definitions and charmaps
557 \f
558 Version 2.1
560 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
561 conform to POSIX member type requirements. Symbol versions have been
562 adjusted as needed within the library, and for direct use by applications,
563 but there is potential for problems if third-party libraries use
564 struct timeval as part of their interface. This does not present
565 a problem for X and other "essential" system libraries.
567 * An additional locale model to support C++ Standard Library locale
568 model and probably more was implemented by Ulrich Drepper.
570 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
571 symbol level.
573 * Miles Bader provided the `argp' function family to support hierachical
574 command line argument parsing, layered on top of getopt.
576 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
578 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
579 numbers.
581 * scanf recognizes the %a and %A format for scanning floating point numbers.
583 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
584 information and interfaces for the available integer types.
586 * about 130 new math functions were added to implement the ISO C9x math
587 library.
589 * the new header <complex.h> contains definitions of the complex math
590 functions from ISO C 9X.
592 * the new header <tgmath.h> defines generic macros to use complex or
593 real valued functions.
595 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
597 * Andreas Jaeger provided a test suite for the math library.
599 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
601 * Ulrich Drepper added character set conversion functions (iconv).
603 * Optimized string functions have been added.
605 * The localedata addon is now part of glibc.
607 * An implementation of profiling shared libraries was added by Ulrich Drepper.
609 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
610 daemon for NSS (nscd).
612 Missing a better place here are some numbers on improvements. Under
613 Linux 2.1.125 un-tar-ing the kernel sources takes
615 user system wall
617 using local files 12.19s 6.88s 22.91s
619 using NIS 13.92s 8.91s 26.34s
621 using NIS & nscd 10.37s 7.34s 25.30s
623 using NIS+ 27.57s 30.37s 640.46s
625 using NIS+ & nscd 10.25s 7.83s 26.51s
627 using NIS & old nscd [1] 13.83s 8.32s 29.60s
629 Keep in mind that non-namelookup related operations dominate above times.
630 It was just a common complain that using NIS+ unpacking the kernel is
631 horribly slow.
633 [1] The old nscd implementation is not available anymore since it was
634 distributed with glibc up to version 2.0.98 and thus is now replaced.
636 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
638 * Mark Kettenis provided a Hesiod NSS module.
640 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
641 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
643 * rcmd can now handle netgroups (Dick Streefland).
645 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
646 Bambrough.
648 * Support for the IPv6 protocol has been added to the socket API, as per the
649 latest draft standards.
651 * Support for Linux 2.2 has been added.
653 * Interface changes relative to the latest 2.0.x release:
654 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
655 addseverity NEW: Unix98
656 alphasort64 NEW: LFS
657 argp_err_exit_status NEW: argp, GNU ext
658 argp_error NEW: argp, GNU ext
659 argp_failure NEW: argp, GNU ext
660 argp_help NEW: argp, GNU ext
661 argp_parse NEW: argp, GNU ext
662 argp_program_bug_address NEW: argp, GNU ext
663 argp_program_version NEW: argp, GNU ext
664 argp_program_version_hook NEW: argp, GNU ext
665 argp_state_help NEW: argp, GNU ext
666 argp_usage NEW: argp, GNU ext
667 authdes_create NEW: Secure RPC
668 authdes_getucred NEW: Secure RPC
669 authdes_pk_create NEW: Secure RPC
670 backtrace NEW: GNU ext.
671 backtrace_symbols NEW: GNU ext.
672 backtrace_symbols_fd NEW: GNU ext.
673 cacos NEW: ISO C 9x
674 cacosf NEW: ISO C 9x
675 cacosh NEW: ISO C 9x
676 cacoshf NEW: ISO C 9x
677 cacoshl NEW: ISO C 9x
678 cacosl NEW: ISO C 9x
679 capget NEW: kernel
680 capset NEW: kernel
681 carg NEW: ISO C 9x
682 cargf NEW: ISO C 9x
683 cargl NEW: ISO C 9x
684 casin NEW: ISO C 9x
685 casinf NEW: ISO C 9x
686 casinh NEW: ISO C 9x
687 casinhf NEW: ISO C 9x
688 casinhl NEW: ISO C 9x
689 casinl NEW: ISO C 9x
690 catan NEW: ISO C 9x
691 catanf NEW: ISO C 9x
692 catanh NEW: ISO C 9x
693 catanhf NEW: ISO C 9x
694 catanhl NEW: ISO C 9x
695 catanl NEW: ISO C 9x
696 cbc_crypt NEW: Secure RPC
697 ccos NEW: ISO C 9x
698 ccosf NEW: ISO C 9x
699 ccosh NEW: ISO C 9x
700 ccoshf NEW: ISO C 9x
701 ccoshl NEW: ISO C 9x
702 ccosl NEW: ISO C 9x
703 cexp NEW: ISO C 9x
704 cexpf NEW: ISO C 9x
705 cexpl NEW: ISO C 9x
706 cimag NEW: ISO C 9x
707 cimagf NEW: ISO C 9x
708 cimagl NEW: ISO C 9x
709 clearerr_locked REMOVED
710 clntunix_create NEW: sunrpc ext
711 clog NEW: ISO C 9x
712 clog10 NEW: ISO C 9x
713 clog10f NEW: ISO C 9x
714 clog10l NEW: ISO C 9x
715 clogf NEW: ISO C 9x
716 clogl NEW: ISO C 9x
717 conj NEW: ISO C 9x
718 conjf NEW: ISO C 9x
719 conjl NEW: ISO C 9x
720 cpow NEW: ISO C 9x
721 cpowf NEW: ISO C 9x
722 cpowl NEW: ISO C 9x
723 cproj NEW: ISO C 9x
724 cprojf NEW: ISO C 9x
725 cprojl NEW: ISO C 9x
726 creal NEW: ISO C 9x
727 crealf NEW: ISO C 9x
728 creall NEW: ISO C 9x
729 creat64 NEW: LFS
730 csin NEW: ISO C 9x
731 csinf NEW: ISO C 9x
732 csinh NEW: ISO C 9x
733 csinhf NEW: ISO C 9x
734 csinhl NEW: ISO C 9x
735 csinl NEW: ISO C 9x
736 csqrt NEW: ISO C 9x
737 csqrtf NEW: ISO C 9x
738 csqrtl NEW: ISO C 9x
739 ctan NEW: ISO C 9x
740 ctanf NEW: ISO C 9x
741 ctanh NEW: ISO C 9x
742 ctanhf NEW: ISO C 9x
743 ctanhl NEW: ISO C 9x
744 ctanl NEW: ISO C 9x
745 des_setparity NEW: Secure RPC
746 ecb_crypt NEW: Secure RPC
747 endutxent NEW: Unix98
748 exp10 NEW: ISO C 9x
749 exp10f NEW: ISO C 9x
750 exp10l NEW: ISO C 9x
751 exp2 NEW: ISO C 9x
752 exp2f NEW: ISO C 9x
753 exp2l NEW: ISO C 9x
754 fattach NEW: STREAMS
755 fdetach NEW: STREAMS
756 fdim NEW: ISO C 9x
757 fdimf NEW: ISO C 9x
758 fdiml NEW: ISO C 9x
759 feclearexcept NEW: ISO C 9x
760 fegetenv NEW: ISO C 9x
761 fegetexceptflag NEW: ISO C 9x
762 fegetround NEW: ISO C 9x
763 feholdexcept NEW: ISO C 9x
764 feof_locked REMOVED
765 feraiseexcept NEW: ISO C 9x
766 ferror_locked REMOVED
767 fesetenv NEW: ISO C 9x
768 fesetexceptflag NEW: ISO C 9x
769 fesetround NEW: ISO C 9x
770 fetestexcept NEW: ISO C 9x
771 feupdateenv NEW: ISO C 9x
772 fflush_locked REMOVED
773 ffsl NEW: GNU ext.
774 ffsll NEW: GNU ext.
775 fgetpos64 NEW: LFS
776 fgets_unlocked NEW: GNU ext.
777 fileno_locked REMOVED
778 fma NEW: ISO C 9x
779 fmaf NEW: ISO C 9x
780 fmal NEW: ISO C 9x
781 fmax NEW: ISO C 9x
782 fmaxf NEW: ISO C 9x
783 fmaxl NEW: ISO C 9x
784 fmin NEW: ISO C 9x
785 fminf NEW: ISO C 9x
786 fminl NEW: ISO C 9x
787 fmtmsg NEW: Unix98
788 fopen64 NEW: LFS
789 fputc_locked REMOVED
790 fputs_unlocked NEW: GNU ext.
791 fread_unlocked NEW: GNU ext.
792 freopen64 NEW: LFS
793 fseeko NEW: Unix98
794 fsetpos64 NEW: LFS
795 fstatfs64 NEW: LFS
796 fstatvfs NEW: Unix98
797 fstatvfs64 NEW: LFS
798 ftello NEW: Unix98
799 ftello64 NEW: LFS
800 ftruncate64 NEW: LFS
801 ftw64 NEW: LFS
802 fwrite_unlocked NEW: GNU ext.
803 gai_strerror NEW: IPv6
804 gamma_r REMOVED
805 gammaf_r REMOVED
806 gammal_r REMOVED
807 getchar_locked REMOVED
808 getdate NEW: Unix98
809 getdate_err NEW: Unix98
810 getdate_r NEW: GNU ext.
811 getmsg NEW: STREAMS
812 getnameinfo NEW: IPv6
813 getnetname NEW: Secure RPC
814 getpmsg NEW: STREAMS
815 getpt NEW: Unix98 PTY
816 getrlimit64 NEW: LFS
817 getutxent NEW: Unix98
818 getutxid NEW: Unix98
819 getutxline NEW: Unix98
820 glob64 NEW: GNU ext.
821 globfree64 NEW: GNU ext.
822 gnu_get_libc_release NEW: GNU ext.
823 gnu_get_libc_version NEW: GNU ext.
824 grantpt NEW: Unix98 PTY
825 host2netname NEW: Secure RPC
826 iconv NEW: iconv
827 iconv_close NEW: iconv
828 iconv_open NEW: iconv
829 if_freenameindex NEW: IPv6
830 if_indextoname NEW: IPv6
831 if_nameindex NEW: IPv6
832 if_nametoindex NEW: IPv6
833 in6addr_any NEW: IPv6
834 in6addr_loopback NEW: IPv6
835 inet6_isipv4mapped NEW: IPv6
836 isastream NEW: STREAMS
837 iswblank NEW: GNU ext.
838 key_decryptsession NEW: Secure RPC
839 key_decryptsession_pk NEW: Secure RPC
840 key_encryptsession NEW: Secure RPC
841 key_encryptsession_pk NEW: Secure RPC
842 key_gendes NEW: Secure RPC
843 key_get_conv NEW: Secure RPC
844 key_secretkey_is_set NEW: Secure RPC
845 key_setnet NEW: Secure RPC
846 key_setsecret NEW: Secure RPC
847 llrint NEW: ISO C 9x
848 llrintf NEW: ISO C 9x
849 llrintl NEW: ISO C 9x
850 llround NEW: ISO C 9x
851 llroundf NEW: ISO C 9x
852 llroundl NEW: ISO C 9x
853 log2 NEW: ISO C 9x
854 log2f NEW: ISO C 9x
855 log2l NEW: ISO C 9x
856 lrint NEW: ISO C 9x
857 lrintf NEW: ISO C 9x
858 lrintl NEW: ISO C 9x
859 lround NEW: ISO C 9x
860 lroundf NEW: ISO C 9x
861 lroundl NEW: ISO C 9x
862 lseek64 NEW: LFS
863 makecontext NEW: Unix98
864 mempcpy NEW: GNU ext.
865 mmap64 NEW: LFS
866 moncontrol REMOVED
867 modify_ldt NEW: kernel
868 nan NEW: ISO C 9x
869 nanf NEW: ISO C 9x
870 nanl NEW: ISO C 9x
871 nearbyint NEW: ISO C 9x
872 nearbyintf NEW: ISO C 9x
873 nearbyintl NEW: ISO C 9x
874 netname2host NEW: Secure RPC
875 netname2user NEW: Secure RPC
876 nexttoward NEW: ISO C 9x
877 nexttowardf NEW: ISO C 9x
878 nexttowardl NEW: ISO C 9x
879 nftw NEW: Unix98
880 nftw64 NEW: LFS
881 open64 NEW: LFS
882 passwd2des NEW: Secure RPC
883 pow10 NEW: GNU ext.
884 pow10f NEW: GNU ext.
885 pow10l NEW: GNU ext.
886 pread NEW: Unix98
887 pread64 NEW: LFS
888 printf_size NEW: GNU ext.
889 printf_size_info NEW: GNU ext.
890 profil_counter REMOVED
891 pthread_mutexattr_getkind_np REPLACED
892 pthread_mutexattr_setkind_np REPLACED
893 ptsname NEW: Unix98 PTY
894 ptsname_r NEW: Unix98 PTY
895 putc_locked REMOVED
896 putchar_locked REMOVED
897 putgrent NEW: GNU ext.
898 putmsg NEW: STREAMS
899 putpmsg NEW: STREAMS
900 pututxline NEW: Unix98
901 pwrite NEW: Unix98
902 pwrite64 NEW: LFS
903 readdir64 NEW: LFS
904 readdir64_r NEW: LFS
905 remquo NEW: ISO C 9x
906 remquof NEW: ISO C 9x
907 remquol NEW: ISO C 9x
908 round NEW: ISO C 9x
909 roundf NEW: ISO C 9x
910 roundl NEW: ISO C 9x
911 rtime NEW: GNU ext.
912 scalbln NEW: ISO C 9x
913 scalblnf NEW: ISO C 9x
914 scalblnl NEW: ISO C 9x
915 scandir64 NEW: LFS
916 sendfile NEW: kernel
917 setcontext NEW: Unix98
918 setrlimit64 NEW: LFS
919 setutxent NEW: Unix98
920 sighold NEW: Unix98
921 sigignore NEW: Unix98
922 sigqueue NEW: POSIX.1b
923 sigrelse NEW: Unix98
924 sigset NEW: POSIX.1b
925 sigtimedwait NEW: POSIX.1b
926 sigwaitinfo NEW: POSIX.1b
927 sincos NEW: GNU ext.
928 sincosf NEW: GNU ext.
929 sincosl NEW: GNU ext.
930 statfs64 NEW: LFS
931 statvfs NEW: Unix98
932 statvfs64 NEW: LFS
933 strcasestr NEW: GNU ext.
934 strtoimax NEW: ISO C 9x
935 strtoumax NEW: ISO C 9x
936 strverscmp NEW: GNU ext.
937 svcauthdes_stats NEW: Secure RPC
938 svcunix_create NEW: sunrpc etx
939 svcunixfd_create NEW: sunrpc ext
940 swapcontext NEW: Unix98
941 tcgetsid NEW: Unix98 PTY
942 tdestroy NEW: GNU ext.
943 tgamma NEW: ISO C 9x
944 tgammaf NEW: ISO C 9x
945 tgammal NEW: ISO C 9x
946 tmpfile64 NEW: LFS
947 trunc NEW: ISO C 9x
948 truncate64 NEW: LFS
949 truncf NEW: ISO C 9x
950 truncl NEW: ISO C 9x
951 umount2 NEW: kernel
952 unlockpt NEW: Unix98 PTY
953 updwtmpx NEW: Unix98
954 user2netname NEW: Secure RPC
955 utmpxname NEW: Unix98
956 versionsort NEW: GNU ext.
957 versionsort64 NEW: GNU ext.
958 waitid NEW: Unix98
959 wcscasecmp NEW: GNU ext.
960 wcsncasecmp NEW: GNU ext.
961 wcsnlen NEW: GNU ext.
962 wcstoimax NEW: ISO C 9x
963 wcstoll NEW: ISO C 9x
964 wcstoull NEW: ISO C 9x
965 wcstoumax NEW: ISO C 9x
966 wcswcs NEW: Unix98
967 wordexp NEW: POSIX.2
968 wordfree NEW: POSIX.2
969 write_profiling REMOVED
970 xdecrypt NEW: Secure RPC
971 xdr_authdes_cred NEW: Secure RPC
972 xdr_authdes_verf NEW: Secure RPC
973 xdr_cryptkeyarg NEW: Secure RPC
974 xdr_cryptkeyarg2 NEW: Secure RPC
975 xdr_cryptkeyres NEW: Secure RPC
976 xdr_getcredres NEW: Secure RPC
977 xdr_key_netstarg NEW: Secure RPC
978 xdr_key_netstres NEW: Secure RPC
979 xdr_keybuf NEW: Secure RPC
980 xdr_keystatus NEW: Secure RPC
981 xdr_netnamestr NEW: Secure RPC
982 xdr_sizeof NEW: Secure RPC
983 xdr_unixcred NEW: sunrpc ext
984 xencrypt NEW: Secure RPC
985 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
986 \f
987 Version 2.0.6
989 * more bug fixes
991 \f
992 Version 2.0.5
994 * more bug fixes
996 * inet_ntoa is thread-safe
998 * updwtmp is moved from libutil to libc
1000 * rewrite of cbrt function
1002 * update of timezone data
1003 \f
1004 Version 2.0.4
1006 * more bug fixes
1007 \f
1008 Version 2.0.3
1010 * more bug fixes
1011 \f
1012 Version 2.0.2
1014 * more bug fixes
1016 * add atoll function
1018 * fix complex problems in Berkeley DB code
1020 * fix math functions
1021 \f
1022 Version 2.0.1
1024 * fixed lots of header problems (especially Linux/GNU specific)
1026 * dynamic loader preserves all registers
1028 * Roland McGrath provided support for handling of auxiliary objects in
1029 the ELF dynamic loader.
1031 * support for parallel builds is improved
1032 \f
1033 Version 2.0
1035 * GNU extensions are no longer declared by default. To enable them you
1036 must define the macro `_GNU_SOURCE' in your program or compile with
1037 `-D_GNU_SOURCE'.
1039 * The library has changed from using GNU ld symbol aliases to using weak
1040 symbols where available. The ELF object file format supports weak
1041 symbols; GNU ld also supports weak symbols in the a.out format. (There
1042 is also now support for other GNU ld extensions in ELF. Use the
1043 `--with-elf' option to configure to indicate you have ELF, and
1044 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1045 of many files which contained only symbol aliases, reducing the size of
1046 the source and the compiled library; many other files were renamed to
1047 less cryptic names previously occupied by the symbol alias files.
1048 There is a new header file <elf.h> for programs which operate on
1049 files in the ELF format.
1051 * Converted to Autoconf version 2, so `configure' has more options.
1052 Run `configure --help' to see the details.
1054 * The library can now be configured to build profiling, highly-optimized
1055 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1056 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1057 `configure' enable building these extra libraries. The shared library is
1058 built by default when using both ELF and GNU ld. When shared libraries
1059 are enabled, the new library `-ldl' is available for arbitrary run-time
1060 loading of shared objects; its interface is defined in <dlfcn.h>. The
1061 new header file <link.h> gives access to the internals of the run-time
1062 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1063 application of same name on other systems and it provides information
1064 about dynamically linked binaries.
1066 * The C library now provides the run-time support code for profiling
1067 executables compiled with `-pg'. Programs can control the profiling code
1068 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1069 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1070 the support for this file format was contributed by David Mosberger-Tang.
1072 * The math code has been replaced with a math library based on fdlibm from
1073 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1074 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1075 functions. The math functions now reside in a separate library, so
1076 programs using them will need to use `-lm' their linking commands.
1078 * John C. Bowman contributed optimized ix87 assembler inline functions.
1080 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1081 mechanism similar to that found in Solaris 2. This is now used for the
1082 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1083 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1084 file controls what services are used for each individual database. This
1085 works by loading shared libraries with names specified in `nsswitch.conf',
1086 so service modules can be changed or added at any time without even
1087 relinking any program. Currently there are the file, db, and NIS based
1088 NSS services available.
1090 * The new functions `strtoq' and `strtouq' parse integer values from
1091 strings, like `strtol' and `strtoul', but they return `long long int' and
1092 `unsigned long long int' values, respectively (64-bit quantities).
1094 * The new functions `strtof' and `strtold' parse floating-point values from
1095 strings, like `strtod', but they return `float' and `long double' values,
1096 respectively (on some machines `double' and `long double' are the same).
1098 * Ulrich Drepper has contributed new implementations of the floating-point
1099 printing and reading code used in the `printf' family of functions and
1100 `strtod', `strtof', and `strtold'. These new functions are perfectly
1101 accurate, and much faster than the old ones.
1103 * The implementation of the POSIX locale model was completely rewritten by
1104 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1105 to compile the POSIX locale definition.
1107 * The former dummy implementations of the strcoll and strxfrm function are
1108 now replaced by fully functional code contributed by Ulrich Drepper. The
1109 collation information comes from the POSIX locale definitions.
1111 * The new header <langinfo.h> defines an interface for accessing
1112 various locale-dependent data (using the locale chosen with `setlocale').
1114 * Ulrich Drepper has contributed a new suite of functions for operation on
1115 wide-character and multibyte-character strings, in <wchar.h>;
1116 and classification and case conversion of wide characters, in <wctype.h>.
1117 These new functions are conforming to the ISO C, Amendement 1 specification.
1119 * There is now a second implementation of the standard I/O library available.
1120 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1121 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1123 * You can now use positional parameter specifications in format strings
1124 for the `printf' and `scanf' families of functions. For example,
1125 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1126 ``Number 6, Mr Jones''. This is mainly useful when providing different
1127 format strings for different languages, whose grammars may dictate
1128 different orderings of the values being printed. To support this
1129 feature, the interface for `register_printf_handler' has changed; see
1130 the header file <printf.h> for details.
1132 * The `printf' and `scanf' families of functions now understand a new
1133 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1134 to group numbers as indicated by the locale; for `scanf' and friends, this
1135 says to accept as valid only a number with all the proper grouping
1136 separators in the right places. In the default "C" locale, numbers are
1137 not grouped; but locales for specific countries will define the usual
1138 conventions (i.e. separate thousands with `,' in the US locale).
1140 * The pgrp functions have been regularized, slightly incompatibly but much
1141 less confusingly. The core functions are now `getpgid' and `setpgid',
1142 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1143 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1144 provided for compatibility. There is no longer an incompatible `getpgrp'
1145 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1147 * The new header file <fts.h> and suite of functions simplify programs that
1148 operate on directory trees. This code comes from 4.4 BSD.
1150 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1151 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1152 NSS scheme used in glibc.
1154 * There is a new malloc debugging hook `__memalign_hook'.
1156 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1157 `unsigned int' in <sys/types.h>. These are for compatibility only and
1158 their use is discouraged.
1160 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1161 done differently, so that it works even without GNU ld.
1163 * New function `euidaccess' checks allowed access to a file like `access',
1164 but using the effective IDs instead of the real IDs.
1166 * The time zone data files have been updated for the latest and greatest
1167 local time conventions of the countries of the world.
1169 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1170 see <dirent.h>.
1172 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1173 for formatting floating-point numbers. They are provided only for
1174 compatibility; new programs should use `sprintf' instead. There are
1175 also equivalent function for the `long double' floating-point type and
1176 all functions also exist in a reentrant form.
1178 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1179 functions for maintaining the login-record files (primarily of use to
1180 system programs such as `login'), and convenient functions for
1181 allocating and initializing a pseudo-terminal (pty) device.
1183 * Ulrich Drepper has contributed new support for System V style
1184 shared memory and IPC on systems that support it.
1186 * Ulrich Drepper has contributed several miscellaneous new functions found
1187 in System V: The `hsearch' family of functions provide an effective
1188 implementation of hash tables; `a64l' and `l64a' provide a very simple
1189 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1190 number generator.
1192 * Ulrich Drepper has contributed new reentrant counterparts for the
1193 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1195 * Ulrich Drepper has contributed new, highly-optimized versions of several
1196 string functions for the i486/Pentium family of processors.
1198 * Ulrich Drepper has updated the Linux-specific code, based largely
1199 on work done in Hongjiu Lu's version of GNU libc for Linux.
1200 The GNU library now supports Linux versions 2.0.10 and later,
1201 using the ELF object file format (i[3456]86-*-linux).
1203 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1205 * David Mosberger-Tang and Richard Henderson have ported the C library
1206 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1207 dynamic linking support for ELF/Alpha.
1209 * Richard Henderson contributed several Alpha optimized assembler function
1210 for arithmetic and string handling.
1212 * Ulrich Drepper has contributed a new set of message catalog functions to
1213 support multiple languages using the <libintl.h> interface, for use with
1214 his new package GNU gettext. Translation volunteers have contributed
1215 catalogs of the library's messages in Spanish, German, and Korean.
1217 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1218 program and the `catgets' function for reading the catalog files it
1219 creates. (The <libintl.h> interface is preferred; we include the
1220 <nl_types.h> interface using `catgets' only for source compatibility with
1221 programs already written to use it.)
1223 * New header file <values.h> gives SVID-compatible names for <limits.h>
1224 constants.
1226 * Various new macros, declarations, and small header files for compatibility
1227 with 4.4 BSD.
1229 * New function `group_member' is a convenient way to check if a process has
1230 a given effective group ID.
1232 * When using GCC 2.7 and later, the socket functions are now declared in a
1233 special way so that passing an argument of type `struct sockaddr_in *',
1234 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1235 `struct sockaddr *' type, does not generate a type-clash warning.
1237 * New function `error' declared in header file <error.h> is a convenient
1238 function for printing error messages and optionally exiting; this is the
1239 canonical function used in GNU programs. The new functions `err', `warn',
1240 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1241 doing the same thing.
1243 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1244 POSIX.2 `glob' function to do ~ and {...} expansion.
1246 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1247 `clearenv' which is used in POSIX.9 is also available.
1249 * New function `getsid' returns session ID number on systems that support it.
1251 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1252 files <db.h> and <mpool.h> provide a rich set of functions for several
1253 types of simple databases stored in memory and in files, and <ndbm.h> is
1254 an old `ndbm'-compatible interface using the `db' functions. Link with
1255 `-ldb' to get these functions.
1257 * New macro `strdupa' copies a string like `strdup', but uses local stack
1258 space from `alloca' instead of dynamic heap space from `malloc'.
1260 * New function `strnlen' is like `strlen' but searches only a given maximum
1261 number of characters for the null terminator. `stpncpy', `strndup' and
1262 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1263 function.
1265 * New function `statfs' in header <sys/statfs.h>.
1267 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1268 provide convenient functions for operating on blocks of null-terminated
1269 strings.
1271 * A new suite of functions in <utmp.h> handle all the details of reading
1272 and writing the utmp file.
1274 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1275 Thorsten Kukuk.
1277 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1278 completely POSIX compliant and also implemented the extended functionality
1279 to handle alternate digit representation and alternate era date formats.
1281 * Ulrich Drepper provided an implementation of the `strptime' function
1282 defined in XPG4.2 which transforms a string into a `struct tm' value.
1284 * Paul Eggert provided the tzselect shell script as part of the timezone
1285 code. The shell script makes it easy to select the correct timezone
1286 specification.
1288 * The implementation of the malloc family of functions is completely replaced
1289 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1290 The implementation uses the mmap function (if available) and it is
1291 optimized for the use in multi threaded programs.
1293 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1294 functions. This new functionality is usable by specifying a special
1295 salt string and it is compatible with implementation on *BSD systems.
1297 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1298 `getsubopt' to handle second level command line options, `bsd_signal'
1299 to access BSD style `signal' functionality, the obsolete `regexp' style
1300 expression matcher.
1302 * the `lchown' function is available on system which support this
1303 functionality.
1305 * The implementation of the shadow password handling function was contributed
1306 by Ulrich Drepper.
1308 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1310 * POSIX.1g support was added. The <sys/select.h> header is available,
1311 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1312 implementation of `getaddrinfo'.
1313 \f
1314 Version 1.09
1316 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1318 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1319 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1321 * The new function `daemon' from 4.4 BSD is useful for server programs that
1322 want to put themselves in the background.
1324 * Joel Sherrill has contributed support for several standalone boards that
1325 run without an operating system.
1327 * `printf', `scanf' and friends now accept a `q' type modifier for long
1328 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1330 * All of the code taken from BSD (notably most of the math and networking
1331 routines) has been updated from the BSD 4.4-Lite release.
1333 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1335 * The new functions `getdomainname' and `setdomainname' fetch or change the
1336 YP/NIS domain name. These are system calls which exist on systems which
1337 have YP (aka NIS).
1339 * The time zone data files have been updated for the latest international
1340 conventions.
1342 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1343 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1344 \f
1345 Version 1.08
1347 * The C library now includes support for Sun RPC, from Sun's free
1348 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1349 are included. (There is still no support for YP.)
1351 * Tom Quinn has contributed a port of the C library to SGI machines running
1352 Irix 4 (mips-sgi-irix4).
1354 * The new `lockf' function is a simplified interface to the locking
1355 facilities of `fcntl', included for compatibility.
1357 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1359 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1361 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1362 compatibility.
1364 * The error message printed by `assert' for a failed assertion now includes
1365 the name of the program (if using GNU ld) and the name of the calling
1366 function (with versions of GCC that support this).
1368 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1370 * The library now includes the <sys/mman.h> header file and memory
1371 management functions `mmap', `munmap', `mprotect', `msync', and
1372 `madvise', on systems that support those facilities.
1374 * The interface for `mcheck' has changed slightly: the function called to
1375 abort the program when an allocation inconsistency is detected now takes
1376 an argument that indicates the type of failure. The new function
1377 `mprobe' lets you request a consistency check for a particular block at
1378 any time (checks are normally done only when you call `free' or `realloc'
1379 on a block).
1381 * It is now possible to easily cross-compile the C library, building on one
1382 system a library to run on another machine and/or operating system. All
1383 you need to do is set the variable `HOST_CC' in `configparms' to the
1384 native compiler for programs to run on the machine you are building on (a
1385 few generator programs are used on Unix systems); set `CC' to the
1386 cross-compiler.
1388 * The new function `fexecve' (only implemented on the GNU system) executes
1389 a program file given a file descriptor already open on the file.
1390 \f
1391 Version 1.07
1393 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1394 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1396 * You can set the variable `libprefix' in `configparms' to specify a prefix
1397 to be prepended to installed library files; this makes it easy to install
1398 the GNU C library to be linked as `-lgnuc' or whatever.
1400 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1401 copies a limited number of characters from a string, and returns the
1402 address of the last character written.
1404 * You no longer need to check for whether the installed `stddef.h' is
1405 compatible with the GNU C library. configure now checks for you.
1407 * You can now define a per-stream `fileno' function to convert the
1408 stream's cookie into an integral file descriptor.
1410 * ``malloc (0)'' no longer returns a null pointer. Instead, it
1411 allocates zero bytes of storage, and returns a unique pointer which
1412 you can pass to `realloc' or `free'. The behavior is undefined if
1413 you dereference this pointer.
1415 * The C library now runs on Sony NEWS m68k machines running either
1416 NewsOS 3 or NewsOS 4.
1418 * The new `syscall' function is a system-dependent primitive function
1419 for invoking system calls. It has the canonical behavior on Unix
1420 systems, including unreliable return values for some calls (such as
1421 `pipe', `fork' and `getppid').
1423 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
1424 to `EAGAIN', which is the preferred name. On systems whose kernels
1425 use two distinct codes, the C library now translates EWOULDBLOCK to
1426 EAGAIN in every system call function.
1427 \f
1428 Version 1.06
1430 * The GNU C Library Reference Manual is now distributed with the library.
1431 `make dvi' will produce a DVI file of the printed manual.
1432 `make info' will produce Info files that you can read on line using C-h i
1433 in Emacs or the `info' program.
1434 Please send comments on the manual to bug-glibc-manual@gnu.org.
1436 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
1438 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
1440 * Jason Merrill has contributed a port to the Sequent Symmetry running
1441 Dynix version 3 (i386-sequent-dynix).
1443 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
1444 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
1446 * New function `memory_warnings' lets you arrange to get warnings when
1447 malloc is running out of memory to allocate, like Emacs gives you.
1449 * The C library now contains the relocating allocator used in Emacs 19 for
1450 its editing buffers. This allocator (ralloc) minimizes allocation
1451 overhead and fragmentation by moving allocated regions around whenever it
1452 needs to. You always refer to a ralloc'd region with a "handle" (a
1453 pointer to a pointer--an object of type `void **').
1455 * There is a new `printf' format: `%m' gives you the string corresponding
1456 to the error code in `errno'.
1458 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
1459 or `%[' conversion, but instead of filling in a fixed-sized buffer you
1460 pass, the `a' modifier says to fill in a `char **' you pass with a
1461 malloc'd string.
1463 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
1464 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
1465 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
1467 * `mkstemp' is a traditional Unix function to atomically create and open a
1468 uniquely-named temporary file.
1469 \f
1470 Version 1.05
1472 * The standard location for the file that says what the local timezone is
1473 has changed again. It is now `/usr/local/etc/localtime' (or more
1474 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
1476 * The distribution no longer contains any files with names longer than 14
1477 characters.
1479 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
1480 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
1482 * New functions `ttyslot' and `syslog' from 4.4 BSD.
1483 \f
1484 Version 1.04
1486 * The configuration process has changed quite a bit. The `configure'
1487 script is now used just like the configuration scripts for other GNU
1488 packages. The `sysdeps' directory hierarchy is much rearranged.
1489 The file `INSTALL' explains the new scheme in detail.
1491 * The header files no longer need to be processed into ANSI C and
1492 traditional C versions. There is just one set of files to install, and
1493 it will work with ANSI or old C compilers (including `gcc -traditional').
1495 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
1496 MIPS DECStation running Ultrix 4.
1498 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
1499 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
1500 made itself into a shared library.
1502 * Yet further improved support for the i386, running 4.3 BSD-like systems
1503 (such as Mach 3 with the Unix single-server), or System V.
1505 * New function `strncasecmp' to do case-insensitive string comparison
1506 with limited length.
1508 * New function `strsep' is a reentrant alternative to `strtok'.
1510 * New functions `scandir' and `alphasort' for searching directories.
1512 * New function `setenv' is a better interface to `putenv'.
1514 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
1515 function for traversing a directory tree.
1517 * The GNU obstack package is now also part of the C library.
1518 The new function `open_obstack_stream' creates a stdio stream that
1519 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
1520 formatted output directly to an obstack.
1522 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
1523 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
1525 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
1527 * The new functions `strfry' and `memfrob' do mysterious and wonderful
1528 things to your strings.
1530 * There are some new test programs: test-fseek, testmb, and testrand.
1532 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
1533 These ports are not finished, but are a good starting place for really
1534 supporting those systems.
1536 * `/etc/localtime' is now the standard location for the file that says what
1537 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
1538 This follows the general principle that `/etc' is the place for all local
1539 configuration files.
1541 * The C library header files now use `extern "C"' when used by the C++
1542 compiler, so the C library should now work with C++ code.
1544 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
1545 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
1546 in <strings.h>.)
1548 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
1549 function which uses the `merge sort' algorithm, and is said to be
1550 significantly faster than the old GNU `qsort' function. Merge sort is
1551 now the standard `qsort' function. The new algorithm can require a lot
1552 of temporary storage; so, the old sorting function is called when the
1553 required storage is not available.
1555 * The C library now includes Michael Glad's Ultra Fast Crypt, which
1556 provides the Unix `crypt' function, plus some other entry points.
1558 * The code and header files taken from 4.4 BSD have been updated with the
1559 latest files released from Berkeley.
1560 \f
1561 ----------------------------------------------------------------------
1562 Copyright information:
1564 Copyright (C) 1992-1999,2000,2001,2002,2003,2004,2005,2006
1565 Free Software Foundation, Inc.
1567 Permission is granted to anyone to make or distribute verbatim copies
1568 of this document as received, in any medium, provided that the
1569 copyright notice and this permission notice are preserved,
1570 thus giving the recipient permission to redistribute in turn.
1572 Permission is granted to distribute modified versions
1573 of this document, or of portions of it,
1574 under the above conditions, provided also that they
1575 carry prominent notices stating who last changed them.
1576 \f
1577 Local variables:
1578 version-control: never
1579 End: