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1 GNU C Library NEWS -- history of user-visible changes. 2006-08-14
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 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
14 Implemented by Ulrich Drepper.
16 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
18 * New iconv module for MIK. Contributed by Alexander Shopov.
20 * For sites with broken group and/or passwd database, the auto-propagate
21 option of nscd can prevent creating ID lookup entries from the results
22 of a name lookup and vice versa. This usually is no problem but some
23 site might have problems with default behavior.
24 Implemented by Ulrich Drepper.
26 * Iterating over entire database in NIS can be slow. With the
27 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
28 to trade time for memory. The entire database will be read at once.
29 Implemented by Ulrich Drepper.
31 * The interfaces introduced in RFC 3542 have been implemented by
32 Ulrich Drepper.
34 * Support for the new ELF hash table format was added by Ulrich Drepper.
36 * Support for priority inheritance mutexes added by Jakub Jelinek and
37 Ulrich Drepper.
39 * Support for priority protected mutexes added by Jakub Jelinek.
41 \f
42 Version 2.4
44 * More overflow detection functions.
46 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
47 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
49 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
50 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
51 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
52 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
53 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
54 by Masahide Washizawa.
56 * It is now possible to install audit libraries for the dynamic linker using
57 LD_AUDIT. Implemented by Ulrich Drepper.
59 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
60 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
61 For a libc and libpthread that works well on Linux 2.4 kernels, we
62 recommend using the stable 2.3 branch.
64 * The new function open_wmemstream acts like open_memstream,
65 but uses a wchar_t wide character buffer.
67 * The new function ppoll is an improved version of poll, similar to pselect.
69 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
70 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
71 renameat, unlinkat, linkat, symlinkat, readlinkat.
73 * New Linux kernel system calls: unshare,
74 inotify_init, inotify_add_watch, inotify_rm_watch.
76 * The euidaccess function is now also known by the alias eaccess,
77 for compatibility with some other systems.
79 * Timezone data updated to 2006b version.
80 \f
81 Version 2.3.6
83 * The following bugs are resolved with this release:
85 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
86 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
87 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
88 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
89 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
90 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
92 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
94 * As of this release, GCC 4 can be used to compile the C Library.
96 * Timezone data updated to 2005m version.
97 \f
98 Version 2.3.5
100 * The following bugs are resolved with this release:
102 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
103 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
104 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
105 777, 787, 821, 822, 823, 825
107 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
108 \f
109 Version 2.3.4
111 * Support for RFC 3678. Real implementations exist only for Linux so far.
112 Implemented by Ulrich Drepper.
114 * nscd can now cache entries persistently. Expiring entries are reloaded.
115 For speedups the cache can be shared in memory with client processes.
116 Implemented by Ulrich Drepper.
118 * nscd can now perform SELinux checks.
119 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
121 * getaddrinfo queries are now cached. Canonical name lookup is performed
122 efficiently.
123 Implemented by Ulrich Drepper.
125 * The nothrow function attribute is used when headers are used by gcc when
126 compiling C code. This can avoid significant amounts of exception
127 handling data.
129 * The malloc functions perform more error checking and are stricter when
130 it comes to reacting on errors. The default action is to terminate
131 the process after showing an error message. Implemented by Ulrich Drepper.
133 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
134 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
136 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
137 namespaces using the new function dlmopen(). This feature is of course,
138 like most other dynamic loading functionality, not available in statically
139 linked applications. Implemented by Ulrich Drepper.
141 * Low-overhead boundary checking variants of string and some stdio functions
142 were added. These are to be used in conjunction with a gcc patch by
143 Jakub Jelinek which adds calls to these functions if possible.
144 Implemented by Jakub Jelinek and Ulrich Drepper.
146 * Old code for several operating systems and machine architectures that
147 have not been in working condition in a long time have been removed from
148 the main source tree maintained by the GNU C Library's maintainers.
149 These files are now reside in the separate `ports' source module
150 that is usable as an add-on when building the library.
151 \f
152 Version 2.3.3
154 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
155 interrogate the dynamic linker, compatible with the Solaris interface.
157 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
158 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
160 * getifaddrs now uses the netlink interface on Linux to get its information.
161 Implemented by Thorsten Kukuk.
163 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
164 Implemented by Ulrich Drepper.
166 * support for non-executable stacks on x86 has been added. Changes mostly
167 by Roland McGrath.
169 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
170 and Ulrich Drepper.
172 * getaddrinfo now performs destination address selection according to
173 RFC 3484.
174 \f
175 Version 2.3.2
177 * Thread-safe interfaces for many functions that access locale data
178 were added in version 2.3, but these features were omitted from NEWS.
179 Many functions have variants with an `_l' suffix that take a `locale_t'
180 object as a parameter rather than consulting the current locale.
181 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
182 create and maintain `locale_t' objects. Additionally, the new function
183 `uselocale' sets "the current locale" (as used by functions not so
184 parameterized) set for an individual thread. These features were added
185 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
187 * The functions getresuid, getresgid, setresuid, and setresgid, which
188 have long been available on Linux, are now declared in <unistd.h>
189 and are now also available on the Hurd.
191 * ELF thread-local storage support (TLS) now works on x86-64.
193 * The new dynamic string token $LIB is expanded in shared library names.
194 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
196 * Aldy Hernandez contributed complete software floating point support for
197 PowerPC machines with no FPU.
199 * fexecve is implemented on Linux.
201 * The `btowc' function should work at least twice as fast due to
202 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
204 * With approriate thread add-ons cancelable functions are now implemented
205 in libc.so as well. No need to call the function in libpthread. This
206 change allowed to finally disable the incorrect and expensive handling
207 of weak definition in ld.so.
209 * Yet more PLT entries in libc.so have been removed. We finally arrived
210 at the bare minimum. Startup times improved appropriately.
212 * Support for the new Linux/x86 system call interface was added. The
213 AT_SYSINFO auxiliary vector entry is recognized and handled.
214 \f
215 Version 2.3
217 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
218 charsets.
220 * iconv (the program and the interface) now accepts empty names (excluding
221 options like //TRANSLIT) to mean "use charset of current locale".
223 * localedef can now transliterate characters in strings which are not in
224 the provided charmap. The information from the input locale is used.
226 * Prelinking support was added for ELF targets. This requires additional
227 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
229 * Read-only stdio streams now use mmap to speed up operation by eliminating
230 copying and buffer underflows. To use add 'm' to the mode string of
231 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
233 * The malloc functions were completely rewritten by Wolfram Gloger based
234 on Doug Lea's malloc-2.7.0.c.
236 * Isamu Hasegawa contributed a completely new and POSIX-conformant
237 implementation of regex.
239 * Bruno Haible upgraded the iconv and locale implementation to support
240 Unicode 3.2.
242 * Contents of the LC_* and LANG environment variables in the CEN style are
243 not recognized anymore. It never was used. Change by Ulrich Drepper.
245 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
246 thread-local storage (TLS) ABI on some platforms.
247 Changes by Ulrich Drepper. SH support by Kaz Kojima.
249 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
250 EUC-JISX0213, and TSCII.
252 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
253 BSD-compatible interface for getting all network interface addresses.
254 Implementation for IPv4 by Roland McGrath.
256 * Loading of locale data is faster due to the introduction of a locale
257 archive. Implemented by Roland McGrath and Ulrich Drepper.
259 * Startup times are significantly reduced by not using exported functions
260 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
261 and Ulrich Drepper.
263 * Steven Munroe contributed a port to PowerPC64/Linux.
264 \f
265 Version 2.2.6
267 * The Hurd now uses the GNU libio implementation of stdio rather than the
268 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
270 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
271 with the same behavior as the Linux system call of the same name.
272 \f
273 Version 2.2.5
275 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
276 128-bit long double format.
278 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
279 IBM1161, and IBM1162 charsets.
281 * Andreas Jaeger contributed a port to x86-64/Linux.
283 * Peter Bruin contributed a port to PowerPC/Hurd.
285 * libc functions using I/O streams now can handle wide-oriented streams
286 as well.
288 * optimizations in the dynamic linker. Binaries created by recent binutils
289 versions start up quicker due to reduced time spent on relocations.
291 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
292 \f
293 Version 2.2.4
295 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
296 asinh, atanh, j0 for the 128-bit long double format.
298 * Bruno Haible updated all the code handling Unicode in some form to
299 support Unicode 3.1.
301 * Speed of regex for single-byte locales is back to previous levels.
302 Patch by Isamu Hasegawa.
304 * Alpha, SPARC, and IA-64 now also using floating stacks.
306 * Startup time of internationalized applications greatly improved through
307 iconv cache. Use iconvconfig to generate the cache file.
308 Contributed by Ulrich Drepper.
310 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
311 severe performance problems. Patch by David Mosberger.
313 * The Hurd port got a lot more functionality like AIO, various stdio
314 extensions, etc. Mainly done by Roland McGrath.
316 * mtrace can now lookup symbols in shared libraries.
317 \f
318 Version 2.2.3
320 * Intel's IA-64 math library is largely integrated. It provides fast and
321 accurate implementatations for most basic and standard math functions
322 in float, double, and long double format.
324 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
325 and asin for the 96-bit long double format and asin, log, tan for the
326 128-bit long double format.
328 * The beginning of a last-bit accurate math library by IBM Haifa were added.
329 The basic double functions exist today. Contributed by Abraham Ziv
330 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
331 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
333 * An asynchronous name lookup library was added. The interface is designed
334 after POSIX AIO. The proposal was circulated beforehand to get comments.
335 No negative ones came in. Implemented by Ulrich Drepper.
337 * Port to S390/64bit contributed by Martin Schwidefsky
338 <schwidefsky@de.ibm.com>.
340 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
341 of functions for Linux/IA-64.
343 * The RPC code is now thread safe. Threads can now use the same service
344 of different services at the same time. Patch by Eric Norum
345 <eric.norum@usask.ca> with some help by Ulrich Drepper.
347 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
348 family of functions for Linux/S390.
350 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
351 of functions for Linux/x86.
353 * Port to Linux/CRIS contributed by Axis Communications.
354 \f
355 Version 2.2.2
357 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
358 we can now check for namespace violations and missing declarations. The
359 result is that almost all headers are now Unix-compliant (as defined in
360 the upcoming XPG6). The negative side is that some programs might need
361 corrections, too, if they depend on the incorrect form of the headers in
362 previous versions which defined too many symbols and included too many
363 other headers.
365 * regex now handles multibyte character sets correctly.
366 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
368 * iconv (the program) does now conform to the upcoming XPG6 and handles
369 charmaps. Instead of the charset names the path of charmaps can be
370 provided and the conversion happens based on this data.
371 Contributed by Ulrich Drepper.
373 * The locale program now provides detailed information about the installed
374 locales. While
376 locale -a
378 only lists the names of the supported locales
380 locale -a --verbose
382 provides details such as country, language, and codeset name.
383 Contributed by Ulrich Drepper.
384 \f
385 Version 2.2.1
387 * The gencat program now parses the input file according to the charset
388 selected by the LC_CTYPE category. This is important for stateful
389 character sets. To make generating catalogs easier there is a way
390 to overwrite the charset selected by the locale: before the first
391 message or $ quote line the catalog can contain a line like
393 $ codeset=ISO-8859-2
395 to select the charset (ISO-8859-2 in this case).
397 Implemented by Shinya Hanataka and Ulrich Drepper.
399 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
400 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
401 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
403 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
404 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
406 * The LANGUAGE environment variable is now ignored unless the locale is
407 changed from the default "C" locale.
409 * The usual bug fixes.
410 \f
411 Version 2.2
413 * Greg McGary added runtime support for bounds checking using gcc's
414 new -fbounded-pointers option. ix86 target is complete. PowerPC
415 is in progress.
417 * Thorsten Kukuk added secure mode support to nscd.
419 * The Berkeley db libraries have been removed.
421 Related, the nss_db module is now in a separate package since it
422 obviously requires a database library being available.
424 * Wide character I/O streams implemented by Ulrich Drepper.
426 * Functions from the extended socket API added by Ulrich Drepper.
428 * Functions feenableexcept and fedisableexcept to control the
429 behaviour of individual exceptions have been added by Andreas Jaeger.
431 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
433 * The resolver code has been updated from bind 8.2.3-T5B which supports
434 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
435 and Mark Kettenis.
437 This change could in some situations effect backward compatibility. Since
438 now `_res' is a thread-local instead of a global variable, modifying it
439 in one thread does not have any effect in other threads.
441 The resolver library was also extended to allow IPv6 as the transport
442 protocol for the requests. This work was done by Stig Venaas.
444 * Compatibility code for K&R C compilers has been removed from the
445 header files. A ISO C compiler is needed to use the library
446 (conforming to either C89 or C99 standard).
448 * Complete rewrite of the localedef program to support multibyte character
449 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
450 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
451 Implemented by Ulrich Drepper.
453 Bruno Haible significantly improved the generation and use of the data
454 structures for the wide character tables.
456 * Plural handling in gettext implemented by Ulrich Drepper.
458 * The utmp daemon has been removed.
460 * The port to MIPS-Linux has been finished by Andreas Jaeger.
462 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
463 and Yutaka Niibe.
465 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
467 * POSIX barriers implemented by Kaz Kylheku.
469 * POSIX spawn function family implemented by Ulrich Drepper.
471 * POSIX spinlocks are now available.
473 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
475 * the configure option --enable-kernel=X.Y.Z allows to strip out
476 compatibility for kernel versions before X.Y.Z. This is currently only
477 implemented for Linux.
479 * the sockaddr_in6 structure changed. The IPv6 working group added a new
480 field sin6_scope_id. This means that all programs using IPv6 should be
481 recompiled. Don't expect binary compatibility with previous glibc
482 versions.
484 * various conversion modules for IBM character sets contributed by
485 Masahide Washizawa.
487 * IA-64 port by Jes Sorensen and HJ Lu.
489 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
490 Compiling the GNU C Library for Linux/ia64
491 ******************************************
493 Please refer to the file INSTALL in the same directory as you found
494 this file for general information about configuring and compiling
495 glibc.
497 For general inquiries about glibc under Linux/ia64 please use the
498 following mailing list linux-ia64@linuxia64.org or one of the relevant
499 glibc mailing lists.
501 Recommended Tools for Compilation
502 =================================
504 In order for glibc-2.2 to build correctly on the ia64 you need at
505 least the following versions of the GNU tools (the :
507 * The Cygnus toolchain snapshot for the ia64 as of August 4
508 including the provided set of patches. It is however recommend
509 you use the October 24 toolchain snapshot or a more recent version.
511 OR alternatively you can try the following (the Cygnus toolchain is
512 the recommended solution):
514 * GCC and binutils, GAS and GNU LD out of CVS from
515 sources.redhat.com as of August 28, 2000 or later. The CVS tree
516 may require special patches to work properly on the ia64.
518 Configuring and compiling GNU Libc for Linux/ia64
519 =================================================
521 The library requires Linux kernel version 2.4.0-test4-000728 or
522 later to funtion properly. Besides that it support for debug libraries
523 is currently untested. Hence the following options
524 are required for configuring the library:
526 --disable-debug --enable-kernel=2.4.0
528 It is also important that you make sure the library picks up the
529 appropriate kernel header files, if you do not have recent enough
530 kernel headers in /usr/src/linux/include, you should use the
531 --with-headers=<path> option to specify the location.
533 As an example I personally use the following options to configure
534 the library:
536 --disable-debug
537 --disable-cvs
538 --enable-kernel=2.4.0
539 --host=ia64-linux
540 --enable-add-ons=yes
541 --prefix=/usr
542 --with-headers=/home/jes/linux/include
545 Good luck
547 Jes Sorensen <jes@linuxcare.com>,
548 November 14th, 2000
549 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
550 \f
551 Version 2.1.3
553 * bug fixes
555 \f
556 Version 2.1.2
558 * bug fixes
560 \f
561 Version 2.1.1
563 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
565 * New xdr functions are added; some rpc functions are now 64bit clean.
567 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
569 * Fixed known incompatibilities with glibc 2.0.
571 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
573 * Optimized a number of functions (especially the ELF dynamic loader).
575 * Update timezone data files.
577 * lots of charmaps corrections
579 * some new locale definitions and charmaps
581 \f
582 Version 2.1
584 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
585 conform to POSIX member type requirements. Symbol versions have been
586 adjusted as needed within the library, and for direct use by applications,
587 but there is potential for problems if third-party libraries use
588 struct timeval as part of their interface. This does not present
589 a problem for X and other "essential" system libraries.
591 * An additional locale model to support C++ Standard Library locale
592 model and probably more was implemented by Ulrich Drepper.
594 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
595 symbol level.
597 * Miles Bader provided the `argp' function family to support hierachical
598 command line argument parsing, layered on top of getopt.
600 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
602 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
603 numbers.
605 * scanf recognizes the %a and %A format for scanning floating point numbers.
607 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
608 information and interfaces for the available integer types.
610 * about 130 new math functions were added to implement the ISO C9x math
611 library.
613 * the new header <complex.h> contains definitions of the complex math
614 functions from ISO C 9X.
616 * the new header <tgmath.h> defines generic macros to use complex or
617 real valued functions.
619 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
621 * Andreas Jaeger provided a test suite for the math library.
623 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
625 * Ulrich Drepper added character set conversion functions (iconv).
627 * Optimized string functions have been added.
629 * The localedata addon is now part of glibc.
631 * An implementation of profiling shared libraries was added by Ulrich Drepper.
633 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
634 daemon for NSS (nscd).
636 Missing a better place here are some numbers on improvements. Under
637 Linux 2.1.125 un-tar-ing the kernel sources takes
639 user system wall
641 using local files 12.19s 6.88s 22.91s
643 using NIS 13.92s 8.91s 26.34s
645 using NIS & nscd 10.37s 7.34s 25.30s
647 using NIS+ 27.57s 30.37s 640.46s
649 using NIS+ & nscd 10.25s 7.83s 26.51s
651 using NIS & old nscd [1] 13.83s 8.32s 29.60s
653 Keep in mind that non-namelookup related operations dominate above times.
654 It was just a common complain that using NIS+ unpacking the kernel is
655 horribly slow.
657 [1] The old nscd implementation is not available anymore since it was
658 distributed with glibc up to version 2.0.98 and thus is now replaced.
660 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
662 * Mark Kettenis provided a Hesiod NSS module.
664 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
665 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
667 * rcmd can now handle netgroups (Dick Streefland).
669 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
670 Bambrough.
672 * Support for the IPv6 protocol has been added to the socket API, as per the
673 latest draft standards.
675 * Support for Linux 2.2 has been added.
677 * Interface changes relative to the latest 2.0.x release:
678 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
679 addseverity NEW: Unix98
680 alphasort64 NEW: LFS
681 argp_err_exit_status NEW: argp, GNU ext
682 argp_error NEW: argp, GNU ext
683 argp_failure NEW: argp, GNU ext
684 argp_help NEW: argp, GNU ext
685 argp_parse NEW: argp, GNU ext
686 argp_program_bug_address NEW: argp, GNU ext
687 argp_program_version NEW: argp, GNU ext
688 argp_program_version_hook NEW: argp, GNU ext
689 argp_state_help NEW: argp, GNU ext
690 argp_usage NEW: argp, GNU ext
691 authdes_create NEW: Secure RPC
692 authdes_getucred NEW: Secure RPC
693 authdes_pk_create NEW: Secure RPC
694 backtrace NEW: GNU ext.
695 backtrace_symbols NEW: GNU ext.
696 backtrace_symbols_fd NEW: GNU ext.
697 cacos NEW: ISO C 9x
698 cacosf NEW: ISO C 9x
699 cacosh NEW: ISO C 9x
700 cacoshf NEW: ISO C 9x
701 cacoshl NEW: ISO C 9x
702 cacosl NEW: ISO C 9x
703 capget NEW: kernel
704 capset NEW: kernel
705 carg NEW: ISO C 9x
706 cargf NEW: ISO C 9x
707 cargl NEW: ISO C 9x
708 casin NEW: ISO C 9x
709 casinf NEW: ISO C 9x
710 casinh NEW: ISO C 9x
711 casinhf NEW: ISO C 9x
712 casinhl NEW: ISO C 9x
713 casinl NEW: ISO C 9x
714 catan NEW: ISO C 9x
715 catanf NEW: ISO C 9x
716 catanh NEW: ISO C 9x
717 catanhf NEW: ISO C 9x
718 catanhl NEW: ISO C 9x
719 catanl NEW: ISO C 9x
720 cbc_crypt NEW: Secure RPC
721 ccos NEW: ISO C 9x
722 ccosf NEW: ISO C 9x
723 ccosh NEW: ISO C 9x
724 ccoshf NEW: ISO C 9x
725 ccoshl NEW: ISO C 9x
726 ccosl NEW: ISO C 9x
727 cexp NEW: ISO C 9x
728 cexpf NEW: ISO C 9x
729 cexpl NEW: ISO C 9x
730 cimag NEW: ISO C 9x
731 cimagf NEW: ISO C 9x
732 cimagl NEW: ISO C 9x
733 clearerr_locked REMOVED
734 clntunix_create NEW: sunrpc ext
735 clog NEW: ISO C 9x
736 clog10 NEW: ISO C 9x
737 clog10f NEW: ISO C 9x
738 clog10l NEW: ISO C 9x
739 clogf NEW: ISO C 9x
740 clogl NEW: ISO C 9x
741 conj NEW: ISO C 9x
742 conjf NEW: ISO C 9x
743 conjl NEW: ISO C 9x
744 cpow NEW: ISO C 9x
745 cpowf NEW: ISO C 9x
746 cpowl NEW: ISO C 9x
747 cproj NEW: ISO C 9x
748 cprojf NEW: ISO C 9x
749 cprojl NEW: ISO C 9x
750 creal NEW: ISO C 9x
751 crealf NEW: ISO C 9x
752 creall NEW: ISO C 9x
753 creat64 NEW: LFS
754 csin NEW: ISO C 9x
755 csinf NEW: ISO C 9x
756 csinh NEW: ISO C 9x
757 csinhf NEW: ISO C 9x
758 csinhl NEW: ISO C 9x
759 csinl NEW: ISO C 9x
760 csqrt NEW: ISO C 9x
761 csqrtf NEW: ISO C 9x
762 csqrtl NEW: ISO C 9x
763 ctan NEW: ISO C 9x
764 ctanf NEW: ISO C 9x
765 ctanh NEW: ISO C 9x
766 ctanhf NEW: ISO C 9x
767 ctanhl NEW: ISO C 9x
768 ctanl NEW: ISO C 9x
769 des_setparity NEW: Secure RPC
770 ecb_crypt NEW: Secure RPC
771 endutxent NEW: Unix98
772 exp10 NEW: ISO C 9x
773 exp10f NEW: ISO C 9x
774 exp10l NEW: ISO C 9x
775 exp2 NEW: ISO C 9x
776 exp2f NEW: ISO C 9x
777 exp2l NEW: ISO C 9x
778 fattach NEW: STREAMS
779 fdetach NEW: STREAMS
780 fdim NEW: ISO C 9x
781 fdimf NEW: ISO C 9x
782 fdiml NEW: ISO C 9x
783 feclearexcept NEW: ISO C 9x
784 fegetenv NEW: ISO C 9x
785 fegetexceptflag NEW: ISO C 9x
786 fegetround NEW: ISO C 9x
787 feholdexcept NEW: ISO C 9x
788 feof_locked REMOVED
789 feraiseexcept NEW: ISO C 9x
790 ferror_locked REMOVED
791 fesetenv NEW: ISO C 9x
792 fesetexceptflag NEW: ISO C 9x
793 fesetround NEW: ISO C 9x
794 fetestexcept NEW: ISO C 9x
795 feupdateenv NEW: ISO C 9x
796 fflush_locked REMOVED
797 ffsl NEW: GNU ext.
798 ffsll NEW: GNU ext.
799 fgetpos64 NEW: LFS
800 fgets_unlocked NEW: GNU ext.
801 fileno_locked REMOVED
802 fma NEW: ISO C 9x
803 fmaf NEW: ISO C 9x
804 fmal NEW: ISO C 9x
805 fmax NEW: ISO C 9x
806 fmaxf NEW: ISO C 9x
807 fmaxl NEW: ISO C 9x
808 fmin NEW: ISO C 9x
809 fminf NEW: ISO C 9x
810 fminl NEW: ISO C 9x
811 fmtmsg NEW: Unix98
812 fopen64 NEW: LFS
813 fputc_locked REMOVED
814 fputs_unlocked NEW: GNU ext.
815 fread_unlocked NEW: GNU ext.
816 freopen64 NEW: LFS
817 fseeko NEW: Unix98
818 fsetpos64 NEW: LFS
819 fstatfs64 NEW: LFS
820 fstatvfs NEW: Unix98
821 fstatvfs64 NEW: LFS
822 ftello NEW: Unix98
823 ftello64 NEW: LFS
824 ftruncate64 NEW: LFS
825 ftw64 NEW: LFS
826 fwrite_unlocked NEW: GNU ext.
827 gai_strerror NEW: IPv6
828 gamma_r REMOVED
829 gammaf_r REMOVED
830 gammal_r REMOVED
831 getchar_locked REMOVED
832 getdate NEW: Unix98
833 getdate_err NEW: Unix98
834 getdate_r NEW: GNU ext.
835 getmsg NEW: STREAMS
836 getnameinfo NEW: IPv6
837 getnetname NEW: Secure RPC
838 getpmsg NEW: STREAMS
839 getpt NEW: Unix98 PTY
840 getrlimit64 NEW: LFS
841 getutxent NEW: Unix98
842 getutxid NEW: Unix98
843 getutxline NEW: Unix98
844 glob64 NEW: GNU ext.
845 globfree64 NEW: GNU ext.
846 gnu_get_libc_release NEW: GNU ext.
847 gnu_get_libc_version NEW: GNU ext.
848 grantpt NEW: Unix98 PTY
849 host2netname NEW: Secure RPC
850 iconv NEW: iconv
851 iconv_close NEW: iconv
852 iconv_open NEW: iconv
853 if_freenameindex NEW: IPv6
854 if_indextoname NEW: IPv6
855 if_nameindex NEW: IPv6
856 if_nametoindex NEW: IPv6
857 in6addr_any NEW: IPv6
858 in6addr_loopback NEW: IPv6
859 inet6_isipv4mapped NEW: IPv6
860 isastream NEW: STREAMS
861 iswblank NEW: GNU ext.
862 key_decryptsession NEW: Secure RPC
863 key_decryptsession_pk NEW: Secure RPC
864 key_encryptsession NEW: Secure RPC
865 key_encryptsession_pk NEW: Secure RPC
866 key_gendes NEW: Secure RPC
867 key_get_conv NEW: Secure RPC
868 key_secretkey_is_set NEW: Secure RPC
869 key_setnet NEW: Secure RPC
870 key_setsecret NEW: Secure RPC
871 llrint NEW: ISO C 9x
872 llrintf NEW: ISO C 9x
873 llrintl NEW: ISO C 9x
874 llround NEW: ISO C 9x
875 llroundf NEW: ISO C 9x
876 llroundl NEW: ISO C 9x
877 log2 NEW: ISO C 9x
878 log2f NEW: ISO C 9x
879 log2l NEW: ISO C 9x
880 lrint NEW: ISO C 9x
881 lrintf NEW: ISO C 9x
882 lrintl NEW: ISO C 9x
883 lround NEW: ISO C 9x
884 lroundf NEW: ISO C 9x
885 lroundl NEW: ISO C 9x
886 lseek64 NEW: LFS
887 makecontext NEW: Unix98
888 mempcpy NEW: GNU ext.
889 mmap64 NEW: LFS
890 moncontrol REMOVED
891 modify_ldt NEW: kernel
892 nan NEW: ISO C 9x
893 nanf NEW: ISO C 9x
894 nanl NEW: ISO C 9x
895 nearbyint NEW: ISO C 9x
896 nearbyintf NEW: ISO C 9x
897 nearbyintl NEW: ISO C 9x
898 netname2host NEW: Secure RPC
899 netname2user NEW: Secure RPC
900 nexttoward NEW: ISO C 9x
901 nexttowardf NEW: ISO C 9x
902 nexttowardl NEW: ISO C 9x
903 nftw NEW: Unix98
904 nftw64 NEW: LFS
905 open64 NEW: LFS
906 passwd2des NEW: Secure RPC
907 pow10 NEW: GNU ext.
908 pow10f NEW: GNU ext.
909 pow10l NEW: GNU ext.
910 pread NEW: Unix98
911 pread64 NEW: LFS
912 printf_size NEW: GNU ext.
913 printf_size_info NEW: GNU ext.
914 profil_counter REMOVED
915 pthread_mutexattr_getkind_np REPLACED
916 pthread_mutexattr_setkind_np REPLACED
917 ptsname NEW: Unix98 PTY
918 ptsname_r NEW: Unix98 PTY
919 putc_locked REMOVED
920 putchar_locked REMOVED
921 putgrent NEW: GNU ext.
922 putmsg NEW: STREAMS
923 putpmsg NEW: STREAMS
924 pututxline NEW: Unix98
925 pwrite NEW: Unix98
926 pwrite64 NEW: LFS
927 readdir64 NEW: LFS
928 readdir64_r NEW: LFS
929 remquo NEW: ISO C 9x
930 remquof NEW: ISO C 9x
931 remquol NEW: ISO C 9x
932 round NEW: ISO C 9x
933 roundf NEW: ISO C 9x
934 roundl NEW: ISO C 9x
935 rtime NEW: GNU ext.
936 scalbln NEW: ISO C 9x
937 scalblnf NEW: ISO C 9x
938 scalblnl NEW: ISO C 9x
939 scandir64 NEW: LFS
940 sendfile NEW: kernel
941 setcontext NEW: Unix98
942 setrlimit64 NEW: LFS
943 setutxent NEW: Unix98
944 sighold NEW: Unix98
945 sigignore NEW: Unix98
946 sigqueue NEW: POSIX.1b
947 sigrelse NEW: Unix98
948 sigset NEW: POSIX.1b
949 sigtimedwait NEW: POSIX.1b
950 sigwaitinfo NEW: POSIX.1b
951 sincos NEW: GNU ext.
952 sincosf NEW: GNU ext.
953 sincosl NEW: GNU ext.
954 statfs64 NEW: LFS
955 statvfs NEW: Unix98
956 statvfs64 NEW: LFS
957 strcasestr NEW: GNU ext.
958 strtoimax NEW: ISO C 9x
959 strtoumax NEW: ISO C 9x
960 strverscmp NEW: GNU ext.
961 svcauthdes_stats NEW: Secure RPC
962 svcunix_create NEW: sunrpc etx
963 svcunixfd_create NEW: sunrpc ext
964 swapcontext NEW: Unix98
965 tcgetsid NEW: Unix98 PTY
966 tdestroy NEW: GNU ext.
967 tgamma NEW: ISO C 9x
968 tgammaf NEW: ISO C 9x
969 tgammal NEW: ISO C 9x
970 tmpfile64 NEW: LFS
971 trunc NEW: ISO C 9x
972 truncate64 NEW: LFS
973 truncf NEW: ISO C 9x
974 truncl NEW: ISO C 9x
975 umount2 NEW: kernel
976 unlockpt NEW: Unix98 PTY
977 updwtmpx NEW: Unix98
978 user2netname NEW: Secure RPC
979 utmpxname NEW: Unix98
980 versionsort NEW: GNU ext.
981 versionsort64 NEW: GNU ext.
982 waitid NEW: Unix98
983 wcscasecmp NEW: GNU ext.
984 wcsncasecmp NEW: GNU ext.
985 wcsnlen NEW: GNU ext.
986 wcstoimax NEW: ISO C 9x
987 wcstoll NEW: ISO C 9x
988 wcstoull NEW: ISO C 9x
989 wcstoumax NEW: ISO C 9x
990 wcswcs NEW: Unix98
991 wordexp NEW: POSIX.2
992 wordfree NEW: POSIX.2
993 write_profiling REMOVED
994 xdecrypt NEW: Secure RPC
995 xdr_authdes_cred NEW: Secure RPC
996 xdr_authdes_verf NEW: Secure RPC
997 xdr_cryptkeyarg NEW: Secure RPC
998 xdr_cryptkeyarg2 NEW: Secure RPC
999 xdr_cryptkeyres NEW: Secure RPC
1000 xdr_getcredres NEW: Secure RPC
1001 xdr_key_netstarg NEW: Secure RPC
1002 xdr_key_netstres NEW: Secure RPC
1003 xdr_keybuf NEW: Secure RPC
1004 xdr_keystatus NEW: Secure RPC
1005 xdr_netnamestr NEW: Secure RPC
1006 xdr_sizeof NEW: Secure RPC
1007 xdr_unixcred NEW: sunrpc ext
1008 xencrypt NEW: Secure RPC
1009 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1010 \f
1011 Version 2.0.6
1013 * more bug fixes
1015 \f
1016 Version 2.0.5
1018 * more bug fixes
1020 * inet_ntoa is thread-safe
1022 * updwtmp is moved from libutil to libc
1024 * rewrite of cbrt function
1026 * update of timezone data
1027 \f
1028 Version 2.0.4
1030 * more bug fixes
1031 \f
1032 Version 2.0.3
1034 * more bug fixes
1035 \f
1036 Version 2.0.2
1038 * more bug fixes
1040 * add atoll function
1042 * fix complex problems in Berkeley DB code
1044 * fix math functions
1045 \f
1046 Version 2.0.1
1048 * fixed lots of header problems (especially Linux/GNU specific)
1050 * dynamic loader preserves all registers
1052 * Roland McGrath provided support for handling of auxiliary objects in
1053 the ELF dynamic loader.
1055 * support for parallel builds is improved
1056 \f
1057 Version 2.0
1059 * GNU extensions are no longer declared by default. To enable them you
1060 must define the macro `_GNU_SOURCE' in your program or compile with
1061 `-D_GNU_SOURCE'.
1063 * The library has changed from using GNU ld symbol aliases to using weak
1064 symbols where available. The ELF object file format supports weak
1065 symbols; GNU ld also supports weak symbols in the a.out format. (There
1066 is also now support for other GNU ld extensions in ELF. Use the
1067 `--with-elf' option to configure to indicate you have ELF, and
1068 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1069 of many files which contained only symbol aliases, reducing the size of
1070 the source and the compiled library; many other files were renamed to
1071 less cryptic names previously occupied by the symbol alias files.
1072 There is a new header file <elf.h> for programs which operate on
1073 files in the ELF format.
1075 * Converted to Autoconf version 2, so `configure' has more options.
1076 Run `configure --help' to see the details.
1078 * The library can now be configured to build profiling, highly-optimized
1079 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1080 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1081 `configure' enable building these extra libraries. The shared library is
1082 built by default when using both ELF and GNU ld. When shared libraries
1083 are enabled, the new library `-ldl' is available for arbitrary run-time
1084 loading of shared objects; its interface is defined in <dlfcn.h>. The
1085 new header file <link.h> gives access to the internals of the run-time
1086 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1087 application of same name on other systems and it provides information
1088 about dynamically linked binaries.
1090 * The C library now provides the run-time support code for profiling
1091 executables compiled with `-pg'. Programs can control the profiling code
1092 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1093 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1094 the support for this file format was contributed by David Mosberger-Tang.
1096 * The math code has been replaced with a math library based on fdlibm from
1097 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1098 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1099 functions. The math functions now reside in a separate library, so
1100 programs using them will need to use `-lm' their linking commands.
1102 * John C. Bowman contributed optimized ix87 assembler inline functions.
1104 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1105 mechanism similar to that found in Solaris 2. This is now used for the
1106 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1107 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1108 file controls what services are used for each individual database. This
1109 works by loading shared libraries with names specified in `nsswitch.conf',
1110 so service modules can be changed or added at any time without even
1111 relinking any program. Currently there are the file, db, and NIS based
1112 NSS services available.
1114 * The new functions `strtoq' and `strtouq' parse integer values from
1115 strings, like `strtol' and `strtoul', but they return `long long int' and
1116 `unsigned long long int' values, respectively (64-bit quantities).
1118 * The new functions `strtof' and `strtold' parse floating-point values from
1119 strings, like `strtod', but they return `float' and `long double' values,
1120 respectively (on some machines `double' and `long double' are the same).
1122 * Ulrich Drepper has contributed new implementations of the floating-point
1123 printing and reading code used in the `printf' family of functions and
1124 `strtod', `strtof', and `strtold'. These new functions are perfectly
1125 accurate, and much faster than the old ones.
1127 * The implementation of the POSIX locale model was completely rewritten by
1128 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1129 to compile the POSIX locale definition.
1131 * The former dummy implementations of the strcoll and strxfrm function are
1132 now replaced by fully functional code contributed by Ulrich Drepper. The
1133 collation information comes from the POSIX locale definitions.
1135 * The new header <langinfo.h> defines an interface for accessing
1136 various locale-dependent data (using the locale chosen with `setlocale').
1138 * Ulrich Drepper has contributed a new suite of functions for operation on
1139 wide-character and multibyte-character strings, in <wchar.h>;
1140 and classification and case conversion of wide characters, in <wctype.h>.
1141 These new functions are conforming to the ISO C, Amendement 1 specification.
1143 * There is now a second implementation of the standard I/O library available.
1144 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1145 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1147 * You can now use positional parameter specifications in format strings
1148 for the `printf' and `scanf' families of functions. For example,
1149 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1150 ``Number 6, Mr Jones''. This is mainly useful when providing different
1151 format strings for different languages, whose grammars may dictate
1152 different orderings of the values being printed. To support this
1153 feature, the interface for `register_printf_handler' has changed; see
1154 the header file <printf.h> for details.
1156 * The `printf' and `scanf' families of functions now understand a new
1157 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1158 to group numbers as indicated by the locale; for `scanf' and friends, this
1159 says to accept as valid only a number with all the proper grouping
1160 separators in the right places. In the default "C" locale, numbers are
1161 not grouped; but locales for specific countries will define the usual
1162 conventions (i.e. separate thousands with `,' in the US locale).
1164 * The pgrp functions have been regularized, slightly incompatibly but much
1165 less confusingly. The core functions are now `getpgid' and `setpgid',
1166 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1167 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1168 provided for compatibility. There is no longer an incompatible `getpgrp'
1169 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1171 * The new header file <fts.h> and suite of functions simplify programs that
1172 operate on directory trees. This code comes from 4.4 BSD.
1174 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1175 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1176 NSS scheme used in glibc.
1178 * There is a new malloc debugging hook `__memalign_hook'.
1180 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1181 `unsigned int' in <sys/types.h>. These are for compatibility only and
1182 their use is discouraged.
1184 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1185 done differently, so that it works even without GNU ld.
1187 * New function `euidaccess' checks allowed access to a file like `access',
1188 but using the effective IDs instead of the real IDs.
1190 * The time zone data files have been updated for the latest and greatest
1191 local time conventions of the countries of the world.
1193 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1194 see <dirent.h>.
1196 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1197 for formatting floating-point numbers. They are provided only for
1198 compatibility; new programs should use `sprintf' instead. There are
1199 also equivalent function for the `long double' floating-point type and
1200 all functions also exist in a reentrant form.
1202 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1203 functions for maintaining the login-record files (primarily of use to
1204 system programs such as `login'), and convenient functions for
1205 allocating and initializing a pseudo-terminal (pty) device.
1207 * Ulrich Drepper has contributed new support for System V style
1208 shared memory and IPC on systems that support it.
1210 * Ulrich Drepper has contributed several miscellaneous new functions found
1211 in System V: The `hsearch' family of functions provide an effective
1212 implementation of hash tables; `a64l' and `l64a' provide a very simple
1213 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1214 number generator.
1216 * Ulrich Drepper has contributed new reentrant counterparts for the
1217 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1219 * Ulrich Drepper has contributed new, highly-optimized versions of several
1220 string functions for the i486/Pentium family of processors.
1222 * Ulrich Drepper has updated the Linux-specific code, based largely
1223 on work done in Hongjiu Lu's version of GNU libc for Linux.
1224 The GNU library now supports Linux versions 2.0.10 and later,
1225 using the ELF object file format (i[3456]86-*-linux).
1227 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1229 * David Mosberger-Tang and Richard Henderson have ported the C library
1230 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1231 dynamic linking support for ELF/Alpha.
1233 * Richard Henderson contributed several Alpha optimized assembler function
1234 for arithmetic and string handling.
1236 * Ulrich Drepper has contributed a new set of message catalog functions to
1237 support multiple languages using the <libintl.h> interface, for use with
1238 his new package GNU gettext. Translation volunteers have contributed
1239 catalogs of the library's messages in Spanish, German, and Korean.
1241 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1242 program and the `catgets' function for reading the catalog files it
1243 creates. (The <libintl.h> interface is preferred; we include the
1244 <nl_types.h> interface using `catgets' only for source compatibility with
1245 programs already written to use it.)
1247 * New header file <values.h> gives SVID-compatible names for <limits.h>
1248 constants.
1250 * Various new macros, declarations, and small header files for compatibility
1251 with 4.4 BSD.
1253 * New function `group_member' is a convenient way to check if a process has
1254 a given effective group ID.
1256 * When using GCC 2.7 and later, the socket functions are now declared in a
1257 special way so that passing an argument of type `struct sockaddr_in *',
1258 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1259 `struct sockaddr *' type, does not generate a type-clash warning.
1261 * New function `error' declared in header file <error.h> is a convenient
1262 function for printing error messages and optionally exiting; this is the
1263 canonical function used in GNU programs. The new functions `err', `warn',
1264 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1265 doing the same thing.
1267 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1268 POSIX.2 `glob' function to do ~ and {...} expansion.
1270 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1271 `clearenv' which is used in POSIX.9 is also available.
1273 * New function `getsid' returns session ID number on systems that support it.
1275 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1276 files <db.h> and <mpool.h> provide a rich set of functions for several
1277 types of simple databases stored in memory and in files, and <ndbm.h> is
1278 an old `ndbm'-compatible interface using the `db' functions. Link with
1279 `-ldb' to get these functions.
1281 * New macro `strdupa' copies a string like `strdup', but uses local stack
1282 space from `alloca' instead of dynamic heap space from `malloc'.
1284 * New function `strnlen' is like `strlen' but searches only a given maximum
1285 number of characters for the null terminator. `stpncpy', `strndup' and
1286 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1287 function.
1289 * New function `statfs' in header <sys/statfs.h>.
1291 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1292 provide convenient functions for operating on blocks of null-terminated
1293 strings.
1295 * A new suite of functions in <utmp.h> handle all the details of reading
1296 and writing the utmp file.
1298 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1299 Thorsten Kukuk.
1301 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1302 completely POSIX compliant and also implemented the extended functionality
1303 to handle alternate digit representation and alternate era date formats.
1305 * Ulrich Drepper provided an implementation of the `strptime' function
1306 defined in XPG4.2 which transforms a string into a `struct tm' value.
1308 * Paul Eggert provided the tzselect shell script as part of the timezone
1309 code. The shell script makes it easy to select the correct timezone
1310 specification.
1312 * The implementation of the malloc family of functions is completely replaced
1313 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1314 The implementation uses the mmap function (if available) and it is
1315 optimized for the use in multi threaded programs.
1317 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1318 functions. This new functionality is usable by specifying a special
1319 salt string and it is compatible with implementation on *BSD systems.
1321 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1322 `getsubopt' to handle second level command line options, `bsd_signal'
1323 to access BSD style `signal' functionality, the obsolete `regexp' style
1324 expression matcher.
1326 * the `lchown' function is available on system which support this
1327 functionality.
1329 * The implementation of the shadow password handling function was contributed
1330 by Ulrich Drepper.
1332 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1334 * POSIX.1g support was added. The <sys/select.h> header is available,
1335 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1336 implementation of `getaddrinfo'.
1337 \f
1338 Version 1.09
1340 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1342 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1343 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1345 * The new function `daemon' from 4.4 BSD is useful for server programs that
1346 want to put themselves in the background.
1348 * Joel Sherrill has contributed support for several standalone boards that
1349 run without an operating system.
1351 * `printf', `scanf' and friends now accept a `q' type modifier for long
1352 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1354 * All of the code taken from BSD (notably most of the math and networking
1355 routines) has been updated from the BSD 4.4-Lite release.
1357 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1359 * The new functions `getdomainname' and `setdomainname' fetch or change the
1360 YP/NIS domain name. These are system calls which exist on systems which
1361 have YP (aka NIS).
1363 * The time zone data files have been updated for the latest international
1364 conventions.
1366 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1367 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1368 \f
1369 Version 1.08
1371 * The C library now includes support for Sun RPC, from Sun's free
1372 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1373 are included. (There is still no support for YP.)
1375 * Tom Quinn has contributed a port of the C library to SGI machines running
1376 Irix 4 (mips-sgi-irix4).
1378 * The new `lockf' function is a simplified interface to the locking
1379 facilities of `fcntl', included for compatibility.
1381 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1383 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1385 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1386 compatibility.
1388 * The error message printed by `assert' for a failed assertion now includes
1389 the name of the program (if using GNU ld) and the name of the calling
1390 function (with versions of GCC that support this).
1392 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1394 * The library now includes the <sys/mman.h> header file and memory
1395 management functions `mmap', `munmap', `mprotect', `msync', and
1396 `madvise', on systems that support those facilities.
1398 * The interface for `mcheck' has changed slightly: the function called to
1399 abort the program when an allocation inconsistency is detected now takes
1400 an argument that indicates the type of failure. The new function
1401 `mprobe' lets you request a consistency check for a particular block at
1402 any time (checks are normally done only when you call `free' or `realloc'
1403 on a block).
1405 * It is now possible to easily cross-compile the C library, building on one
1406 system a library to run on another machine and/or operating system. All
1407 you need to do is set the variable `HOST_CC' in `configparms' to the
1408 native compiler for programs to run on the machine you are building on (a
1409 few generator programs are used on Unix systems); set `CC' to the
1410 cross-compiler.
1412 * The new function `fexecve' (only implemented on the GNU system) executes
1413 a program file given a file descriptor already open on the file.
1414 \f
1415 Version 1.07
1417 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1418 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1420 * You can set the variable `libprefix' in `configparms' to specify a prefix
1421 to be prepended to installed library files; this makes it easy to install
1422 the GNU C library to be linked as `-lgnuc' or whatever.
1424 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1425 copies a limited number of characters from a string, and returns the
1426 address of the last character written.
1428 * You no longer need to check for whether the installed `stddef.h' is
1429 compatible with the GNU C library. configure now checks for you.
1431 * You can now define a per-stream `fileno' function to convert the
1432 stream's cookie into an integral file descriptor.
1434 * ``malloc (0)'' no longer returns a null pointer. Instead, it
1435 allocates zero bytes of storage, and returns a unique pointer which
1436 you can pass to `realloc' or `free'. The behavior is undefined if
1437 you dereference this pointer.
1439 * The C library now runs on Sony NEWS m68k machines running either
1440 NewsOS 3 or NewsOS 4.
1442 * The new `syscall' function is a system-dependent primitive function
1443 for invoking system calls. It has the canonical behavior on Unix
1444 systems, including unreliable return values for some calls (such as
1445 `pipe', `fork' and `getppid').
1447 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
1448 to `EAGAIN', which is the preferred name. On systems whose kernels
1449 use two distinct codes, the C library now translates EWOULDBLOCK to
1450 EAGAIN in every system call function.
1451 \f
1452 Version 1.06
1454 * The GNU C Library Reference Manual is now distributed with the library.
1455 `make dvi' will produce a DVI file of the printed manual.
1456 `make info' will produce Info files that you can read on line using C-h i
1457 in Emacs or the `info' program.
1458 Please send comments on the manual to bug-glibc-manual@gnu.org.
1460 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
1462 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
1464 * Jason Merrill has contributed a port to the Sequent Symmetry running
1465 Dynix version 3 (i386-sequent-dynix).
1467 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
1468 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
1470 * New function `memory_warnings' lets you arrange to get warnings when
1471 malloc is running out of memory to allocate, like Emacs gives you.
1473 * The C library now contains the relocating allocator used in Emacs 19 for
1474 its editing buffers. This allocator (ralloc) minimizes allocation
1475 overhead and fragmentation by moving allocated regions around whenever it
1476 needs to. You always refer to a ralloc'd region with a "handle" (a
1477 pointer to a pointer--an object of type `void **').
1479 * There is a new `printf' format: `%m' gives you the string corresponding
1480 to the error code in `errno'.
1482 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
1483 or `%[' conversion, but instead of filling in a fixed-sized buffer you
1484 pass, the `a' modifier says to fill in a `char **' you pass with a
1485 malloc'd string.
1487 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
1488 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
1489 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
1491 * `mkstemp' is a traditional Unix function to atomically create and open a
1492 uniquely-named temporary file.
1493 \f
1494 Version 1.05
1496 * The standard location for the file that says what the local timezone is
1497 has changed again. It is now `/usr/local/etc/localtime' (or more
1498 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
1500 * The distribution no longer contains any files with names longer than 14
1501 characters.
1503 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
1504 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
1506 * New functions `ttyslot' and `syslog' from 4.4 BSD.
1507 \f
1508 Version 1.04
1510 * The configuration process has changed quite a bit. The `configure'
1511 script is now used just like the configuration scripts for other GNU
1512 packages. The `sysdeps' directory hierarchy is much rearranged.
1513 The file `INSTALL' explains the new scheme in detail.
1515 * The header files no longer need to be processed into ANSI C and
1516 traditional C versions. There is just one set of files to install, and
1517 it will work with ANSI or old C compilers (including `gcc -traditional').
1519 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
1520 MIPS DECStation running Ultrix 4.
1522 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
1523 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
1524 made itself into a shared library.
1526 * Yet further improved support for the i386, running 4.3 BSD-like systems
1527 (such as Mach 3 with the Unix single-server), or System V.
1529 * New function `strncasecmp' to do case-insensitive string comparison
1530 with limited length.
1532 * New function `strsep' is a reentrant alternative to `strtok'.
1534 * New functions `scandir' and `alphasort' for searching directories.
1536 * New function `setenv' is a better interface to `putenv'.
1538 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
1539 function for traversing a directory tree.
1541 * The GNU obstack package is now also part of the C library.
1542 The new function `open_obstack_stream' creates a stdio stream that
1543 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
1544 formatted output directly to an obstack.
1546 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
1547 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
1549 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
1551 * The new functions `strfry' and `memfrob' do mysterious and wonderful
1552 things to your strings.
1554 * There are some new test programs: test-fseek, testmb, and testrand.
1556 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
1557 These ports are not finished, but are a good starting place for really
1558 supporting those systems.
1560 * `/etc/localtime' is now the standard location for the file that says what
1561 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
1562 This follows the general principle that `/etc' is the place for all local
1563 configuration files.
1565 * The C library header files now use `extern "C"' when used by the C++
1566 compiler, so the C library should now work with C++ code.
1568 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
1569 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
1570 in <strings.h>.)
1572 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
1573 function which uses the `merge sort' algorithm, and is said to be
1574 significantly faster than the old GNU `qsort' function. Merge sort is
1575 now the standard `qsort' function. The new algorithm can require a lot
1576 of temporary storage; so, the old sorting function is called when the
1577 required storage is not available.
1579 * The C library now includes Michael Glad's Ultra Fast Crypt, which
1580 provides the Unix `crypt' function, plus some other entry points.
1582 * The code and header files taken from 4.4 BSD have been updated with the
1583 latest files released from Berkeley.
1584 \f
1585 ----------------------------------------------------------------------
1586 Copyright information:
1588 Copyright (C) 1992-1999,2000,2001,2002,2003,2004,2005,2006
1589 Free Software Foundation, Inc.
1591 Permission is granted to anyone to make or distribute verbatim copies
1592 of this document as received, in any medium, provided that the
1593 copyright notice and this permission notice are preserved,
1594 thus giving the recipient permission to redistribute in turn.
1596 Permission is granted to distribute modified versions
1597 of this document, or of portions of it,
1598 under the above conditions, provided also that they
1599 carry prominent notices stating who last changed them.
1600 \f
1601 Local variables:
1602 version-control: never
1603 End: