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1 GNU C Library NEWS -- history of user-visible changes. 2006-05-24
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, vmsplace.
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 \f
35 Version 2.4
37 * More overflow detection functions.
39 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
40 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
42 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
43 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
44 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
45 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
46 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
47 by Masahide Washizawa.
49 * It is now possible to install audit libraries for the dynamic linker using
50 LD_AUDIT. Implemented by Ulrich Drepper.
52 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
53 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
54 For a libc and libpthread that works well on Linux 2.4 kernels, we
55 recommend using the stable 2.3 branch.
57 * The new function open_wmemstream acts like open_memstream,
58 but uses a wchar_t wide character buffer.
60 * The new function ppoll is an improved version of poll, similar to pselect.
62 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
63 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
64 renameat, unlinkat, linkat, symlinkat, readlinkat.
66 * New Linux kernel system calls: unshare,
67 inotify_init, inotify_add_watch, inotify_rm_watch.
69 * The euidaccess function is now also known by the alias eaccess,
70 for compatibility with some other systems.
72 * Timezone data updated to 2006b version.
73 \f
74 Version 2.3.6
76 * The following bugs are resolved with this release:
78 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
79 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
80 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
81 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
82 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
83 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
85 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
87 * As of this release, GCC 4 can be used to compile the C Library.
89 * Timezone data updated to 2005m version.
90 \f
91 Version 2.3.5
93 * The following bugs are resolved with this release:
95 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
96 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
97 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
98 777, 787, 821, 822, 823, 825
100 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
101 \f
102 Version 2.3.4
104 * Support for RFC 3678. Real implementations exist only for Linux so far.
105 Implemented by Ulrich Drepper.
107 * nscd can now cache entries persistently. Expiring entries are reloaded.
108 For speedups the cache can be shared in memory with client processes.
109 Implemented by Ulrich Drepper.
111 * nscd can now perform SELinux checks.
112 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
114 * getaddrinfo queries are now cached. Canonical name lookup is performed
115 efficiently.
116 Implemented by Ulrich Drepper.
118 * The nothrow function attribute is used when headers are used by gcc when
119 compiling C code. This can avoid significant amounts of exception
120 handling data.
122 * The malloc functions perform more error checking and are stricter when
123 it comes to reacting on errors. The default action is to terminate
124 the process after showing an error message. Implemented by Ulrich Drepper.
126 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
127 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
129 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
130 namespaces using the new function dlmopen(). This feature is of course,
131 like most other dynamic loading functionality, not available in statically
132 linked applications. Implemented by Ulrich Drepper.
134 * Low-overhead boundary checking variants of string and some stdio functions
135 were added. These are to be used in conjunction with a gcc patch by
136 Jakub Jelinek which adds calls to these functions if possible.
137 Implemented by Jakub Jelinek and Ulrich Drepper.
139 * Old code for several operating systems and machine architectures that
140 have not been in working condition in a long time have been removed from
141 the main source tree maintained by the GNU C Library's maintainers.
142 These files are now reside in the separate `ports' source module
143 that is usable as an add-on when building the library.
144 \f
145 Version 2.3.3
147 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
148 interrogate the dynamic linker, compatible with the Solaris interface.
150 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
151 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
153 * getifaddrs now uses the netlink interface on Linux to get its information.
154 Implemented by Thorsten Kukuk.
156 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
157 Implemented by Ulrich Drepper.
159 * support for non-executable stacks on x86 has been added. Changes mostly
160 by Roland McGrath.
162 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
163 and Ulrich Drepper.
165 * getaddrinfo now performs destination address selection according to
166 RFC 3484.
167 \f
168 Version 2.3.2
170 * Thread-safe interfaces for many functions that access locale data
171 were added in version 2.3, but these features were omitted from NEWS.
172 Many functions have variants with an `_l' suffix that take a `locale_t'
173 object as a parameter rather than consulting the current locale.
174 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
175 create and maintain `locale_t' objects. Additionally, the new function
176 `uselocale' sets "the current locale" (as used by functions not so
177 parameterized) set for an individual thread. These features were added
178 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
180 * The functions getresuid, getresgid, setresuid, and setresgid, which
181 have long been available on Linux, are now declared in <unistd.h>
182 and are now also available on the Hurd.
184 * ELF thread-local storage support (TLS) now works on x86-64.
186 * The new dynamic string token $LIB is expanded in shared library names.
187 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
189 * Aldy Hernandez contributed complete software floating point support for
190 PowerPC machines with no FPU.
192 * fexecve is implemented on Linux.
194 * The `btowc' function should work at least twice as fast due to
195 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
197 * With approriate thread add-ons cancelable functions are now implemented
198 in libc.so as well. No need to call the function in libpthread. This
199 change allowed to finally disable the incorrect and expensive handling
200 of weak definition in ld.so.
202 * Yet more PLT entries in libc.so have been removed. We finally arrived
203 at the bare minimum. Startup times improved appropriately.
205 * Support for the new Linux/x86 system call interface was added. The
206 AT_SYSINFO auxiliary vector entry is recognized and handled.
207 \f
208 Version 2.3
210 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
211 charsets.
213 * iconv (the program and the interface) now accepts empty names (excluding
214 options like //TRANSLIT) to mean "use charset of current locale".
216 * localedef can now transliterate characters in strings which are not in
217 the provided charmap. The information from the input locale is used.
219 * Prelinking support was added for ELF targets. This requires additional
220 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
222 * Read-only stdio streams now use mmap to speed up operation by eliminating
223 copying and buffer underflows. To use add 'm' to the mode string of
224 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
226 * The malloc functions were completely rewritten by Wolfram Gloger based
227 on Doug Lea's malloc-2.7.0.c.
229 * Isamu Hasegawa contributed a completely new and POSIX-conformant
230 implementation of regex.
232 * Bruno Haible upgraded the iconv and locale implementation to support
233 Unicode 3.2.
235 * Contents of the LC_* and LANG environment variables in the CEN style are
236 not recognized anymore. It never was used. Change by Ulrich Drepper.
238 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
239 thread-local storage (TLS) ABI on some platforms.
240 Changes by Ulrich Drepper. SH support by Kaz Kojima.
242 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
243 EUC-JISX0213, and TSCII.
245 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
246 BSD-compatible interface for getting all network interface addresses.
247 Implementation for IPv4 by Roland McGrath.
249 * Loading of locale data is faster due to the introduction of a locale
250 archive. Implemented by Roland McGrath and Ulrich Drepper.
252 * Startup times are significantly reduced by not using exported functions
253 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
254 and Ulrich Drepper.
256 * Steven Munroe contributed a port to PowerPC64/Linux.
257 \f
258 Version 2.2.6
260 * The Hurd now uses the GNU libio implementation of stdio rather than the
261 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
263 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
264 with the same behavior as the Linux system call of the same name.
265 \f
266 Version 2.2.5
268 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
269 128-bit long double format.
271 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
272 IBM1161, and IBM1162 charsets.
274 * Andreas Jaeger contributed a port to x86-64/Linux.
276 * Peter Bruin contributed a port to PowerPC/Hurd.
278 * libc functions using I/O streams now can handle wide-oriented streams
279 as well.
281 * optimizations in the dynamic linker. Binaries created by recent binutils
282 versions start up quicker due to reduced time spent on relocations.
284 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
285 \f
286 Version 2.2.4
288 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
289 asinh, atanh, j0 for the 128-bit long double format.
291 * Bruno Haible updated all the code handling Unicode in some form to
292 support Unicode 3.1.
294 * Speed of regex for single-byte locales is back to previous levels.
295 Patch by Isamu Hasegawa.
297 * Alpha, SPARC, and IA-64 now also using floating stacks.
299 * Startup time of internationalized applications greatly improved through
300 iconv cache. Use iconvconfig to generate the cache file.
301 Contributed by Ulrich Drepper.
303 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
304 severe performance problems. Patch by David Mosberger.
306 * The Hurd port got a lot more functionality like AIO, various stdio
307 extensions, etc. Mainly done by Roland McGrath.
309 * mtrace can now lookup symbols in shared libraries.
310 \f
311 Version 2.2.3
313 * Intel's IA-64 math library is largely integrated. It provides fast and
314 accurate implementatations for most basic and standard math functions
315 in float, double, and long double format.
317 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
318 and asin for the 96-bit long double format and asin, log, tan for the
319 128-bit long double format.
321 * The beginning of a last-bit accurate math library by IBM Haifa were added.
322 The basic double functions exist today. Contributed by Abraham Ziv
323 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
324 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
326 * An asynchronous name lookup library was added. The interface is designed
327 after POSIX AIO. The proposal was circulated beforehand to get comments.
328 No negative ones came in. Implemented by Ulrich Drepper.
330 * Port to S390/64bit contributed by Martin Schwidefsky
331 <schwidefsky@de.ibm.com>.
333 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
334 of functions for Linux/IA-64.
336 * The RPC code is now thread safe. Threads can now use the same service
337 of different services at the same time. Patch by Eric Norum
338 <eric.norum@usask.ca> with some help by Ulrich Drepper.
340 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
341 family of functions for Linux/S390.
343 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
344 of functions for Linux/x86.
346 * Port to Linux/CRIS contributed by Axis Communications.
347 \f
348 Version 2.2.2
350 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
351 we can now check for namespace violations and missing declarations. The
352 result is that almost all headers are now Unix-compliant (as defined in
353 the upcoming XPG6). The negative side is that some programs might need
354 corrections, too, if they depend on the incorrect form of the headers in
355 previous versions which defined too many symbols and included too many
356 other headers.
358 * regex now handles multibyte character sets correctly.
359 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
361 * iconv (the program) does now conform to the upcoming XPG6 and handles
362 charmaps. Instead of the charset names the path of charmaps can be
363 provided and the conversion happens based on this data.
364 Contributed by Ulrich Drepper.
366 * The locale program now provides detailed information about the installed
367 locales. While
369 locale -a
371 only lists the names of the supported locales
373 locale -a --verbose
375 provides details such as country, language, and codeset name.
376 Contributed by Ulrich Drepper.
377 \f
378 Version 2.2.1
380 * The gencat program now parses the input file according to the charset
381 selected by the LC_CTYPE category. This is important for stateful
382 character sets. To make generating catalogs easier there is a way
383 to overwrite the charset selected by the locale: before the first
384 message or $ quote line the catalog can contain a line like
386 $ codeset=ISO-8859-2
388 to select the charset (ISO-8859-2 in this case).
390 Implemented by Shinya Hanataka and Ulrich Drepper.
392 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
393 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
394 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
396 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
397 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
399 * The LANGUAGE environment variable is now ignored unless the locale is
400 changed from the default "C" locale.
402 * The usual bug fixes.
403 \f
404 Version 2.2
406 * Greg McGary added runtime support for bounds checking using gcc's
407 new -fbounded-pointers option. ix86 target is complete. PowerPC
408 is in progress.
410 * Thorsten Kukuk added secure mode support to nscd.
412 * The Berkeley db libraries have been removed.
414 Related, the nss_db module is now in a separate package since it
415 obviously requires a database library being available.
417 * Wide character I/O streams implemented by Ulrich Drepper.
419 * Functions from the extended socket API added by Ulrich Drepper.
421 * Functions feenableexcept and fedisableexcept to control the
422 behaviour of individual exceptions have been added by Andreas Jaeger.
424 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
426 * The resolver code has been updated from bind 8.2.3-T5B which supports
427 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
428 and Mark Kettenis.
430 This change could in some situations effect backward compatibility. Since
431 now `_res' is a thread-local instead of a global variable, modifying it
432 in one thread does not have any effect in other threads.
434 The resolver library was also extended to allow IPv6 as the transport
435 protocol for the requests. This work was done by Stig Venaas.
437 * Compatibility code for K&R C compilers has been removed from the
438 header files. A ISO C compiler is needed to use the library
439 (conforming to either C89 or C99 standard).
441 * Complete rewrite of the localedef program to support multibyte character
442 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
443 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
444 Implemented by Ulrich Drepper.
446 Bruno Haible significantly improved the generation and use of the data
447 structures for the wide character tables.
449 * Plural handling in gettext implemented by Ulrich Drepper.
451 * The utmp daemon has been removed.
453 * The port to MIPS-Linux has been finished by Andreas Jaeger.
455 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
456 and Yutaka Niibe.
458 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
460 * POSIX barriers implemented by Kaz Kylheku.
462 * POSIX spawn function family implemented by Ulrich Drepper.
464 * POSIX spinlocks are now available.
466 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
468 * the configure option --enable-kernel=X.Y.Z allows to strip out
469 compatibility for kernel versions before X.Y.Z. This is currently only
470 implemented for Linux.
472 * the sockaddr_in6 structure changed. The IPv6 working group added a new
473 field sin6_scope_id. This means that all programs using IPv6 should be
474 recompiled. Don't expect binary compatibility with previous glibc
475 versions.
477 * various conversion modules for IBM character sets contributed by
478 Masahide Washizawa.
480 * IA-64 port by Jes Sorensen and HJ Lu.
482 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
483 Compiling the GNU C Library for Linux/ia64
484 ******************************************
486 Please refer to the file INSTALL in the same directory as you found
487 this file for general information about configuring and compiling
488 glibc.
490 For general inquiries about glibc under Linux/ia64 please use the
491 following mailing list linux-ia64@linuxia64.org or one of the relevant
492 glibc mailing lists.
494 Recommended Tools for Compilation
495 =================================
497 In order for glibc-2.2 to build correctly on the ia64 you need at
498 least the following versions of the GNU tools (the :
500 * The Cygnus toolchain snapshot for the ia64 as of August 4
501 including the provided set of patches. It is however recommend
502 you use the October 24 toolchain snapshot or a more recent version.
504 OR alternatively you can try the following (the Cygnus toolchain is
505 the recommended solution):
507 * GCC and binutils, GAS and GNU LD out of CVS from
508 sources.redhat.com as of August 28, 2000 or later. The CVS tree
509 may require special patches to work properly on the ia64.
511 Configuring and compiling GNU Libc for Linux/ia64
512 =================================================
514 The library requires Linux kernel version 2.4.0-test4-000728 or
515 later to funtion properly. Besides that it support for debug libraries
516 is currently untested. Hence the following options
517 are required for configuring the library:
519 --disable-debug --enable-kernel=2.4.0
521 It is also important that you make sure the library picks up the
522 appropriate kernel header files, if you do not have recent enough
523 kernel headers in /usr/src/linux/include, you should use the
524 --with-headers=<path> option to specify the location.
526 As an example I personally use the following options to configure
527 the library:
529 --disable-debug
530 --disable-cvs
531 --enable-kernel=2.4.0
532 --host=ia64-linux
533 --enable-add-ons=yes
534 --prefix=/usr
535 --with-headers=/home/jes/linux/include
538 Good luck
540 Jes Sorensen <jes@linuxcare.com>,
541 November 14th, 2000
542 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
543 \f
544 Version 2.1.3
546 * bug fixes
548 \f
549 Version 2.1.2
551 * bug fixes
553 \f
554 Version 2.1.1
556 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
558 * New xdr functions are added; some rpc functions are now 64bit clean.
560 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
562 * Fixed known incompatibilities with glibc 2.0.
564 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
566 * Optimized a number of functions (especially the ELF dynamic loader).
568 * Update timezone data files.
570 * lots of charmaps corrections
572 * some new locale definitions and charmaps
574 \f
575 Version 2.1
577 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
578 conform to POSIX member type requirements. Symbol versions have been
579 adjusted as needed within the library, and for direct use by applications,
580 but there is potential for problems if third-party libraries use
581 struct timeval as part of their interface. This does not present
582 a problem for X and other "essential" system libraries.
584 * An additional locale model to support C++ Standard Library locale
585 model and probably more was implemented by Ulrich Drepper.
587 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
588 symbol level.
590 * Miles Bader provided the `argp' function family to support hierachical
591 command line argument parsing, layered on top of getopt.
593 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
595 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
596 numbers.
598 * scanf recognizes the %a and %A format for scanning floating point numbers.
600 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
601 information and interfaces for the available integer types.
603 * about 130 new math functions were added to implement the ISO C9x math
604 library.
606 * the new header <complex.h> contains definitions of the complex math
607 functions from ISO C 9X.
609 * the new header <tgmath.h> defines generic macros to use complex or
610 real valued functions.
612 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
614 * Andreas Jaeger provided a test suite for the math library.
616 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
618 * Ulrich Drepper added character set conversion functions (iconv).
620 * Optimized string functions have been added.
622 * The localedata addon is now part of glibc.
624 * An implementation of profiling shared libraries was added by Ulrich Drepper.
626 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
627 daemon for NSS (nscd).
629 Missing a better place here are some numbers on improvements. Under
630 Linux 2.1.125 un-tar-ing the kernel sources takes
632 user system wall
634 using local files 12.19s 6.88s 22.91s
636 using NIS 13.92s 8.91s 26.34s
638 using NIS & nscd 10.37s 7.34s 25.30s
640 using NIS+ 27.57s 30.37s 640.46s
642 using NIS+ & nscd 10.25s 7.83s 26.51s
644 using NIS & old nscd [1] 13.83s 8.32s 29.60s
646 Keep in mind that non-namelookup related operations dominate above times.
647 It was just a common complain that using NIS+ unpacking the kernel is
648 horribly slow.
650 [1] The old nscd implementation is not available anymore since it was
651 distributed with glibc up to version 2.0.98 and thus is now replaced.
653 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
655 * Mark Kettenis provided a Hesiod NSS module.
657 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
658 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
660 * rcmd can now handle netgroups (Dick Streefland).
662 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
663 Bambrough.
665 * Support for the IPv6 protocol has been added to the socket API, as per the
666 latest draft standards.
668 * Support for Linux 2.2 has been added.
670 * Interface changes relative to the latest 2.0.x release:
671 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
672 addseverity NEW: Unix98
673 alphasort64 NEW: LFS
674 argp_err_exit_status NEW: argp, GNU ext
675 argp_error NEW: argp, GNU ext
676 argp_failure NEW: argp, GNU ext
677 argp_help NEW: argp, GNU ext
678 argp_parse NEW: argp, GNU ext
679 argp_program_bug_address NEW: argp, GNU ext
680 argp_program_version NEW: argp, GNU ext
681 argp_program_version_hook NEW: argp, GNU ext
682 argp_state_help NEW: argp, GNU ext
683 argp_usage NEW: argp, GNU ext
684 authdes_create NEW: Secure RPC
685 authdes_getucred NEW: Secure RPC
686 authdes_pk_create NEW: Secure RPC
687 backtrace NEW: GNU ext.
688 backtrace_symbols NEW: GNU ext.
689 backtrace_symbols_fd NEW: GNU ext.
690 cacos NEW: ISO C 9x
691 cacosf NEW: ISO C 9x
692 cacosh NEW: ISO C 9x
693 cacoshf NEW: ISO C 9x
694 cacoshl NEW: ISO C 9x
695 cacosl NEW: ISO C 9x
696 capget NEW: kernel
697 capset NEW: kernel
698 carg NEW: ISO C 9x
699 cargf NEW: ISO C 9x
700 cargl NEW: ISO C 9x
701 casin NEW: ISO C 9x
702 casinf NEW: ISO C 9x
703 casinh NEW: ISO C 9x
704 casinhf NEW: ISO C 9x
705 casinhl NEW: ISO C 9x
706 casinl NEW: ISO C 9x
707 catan NEW: ISO C 9x
708 catanf NEW: ISO C 9x
709 catanh NEW: ISO C 9x
710 catanhf NEW: ISO C 9x
711 catanhl NEW: ISO C 9x
712 catanl NEW: ISO C 9x
713 cbc_crypt NEW: Secure RPC
714 ccos NEW: ISO C 9x
715 ccosf NEW: ISO C 9x
716 ccosh NEW: ISO C 9x
717 ccoshf NEW: ISO C 9x
718 ccoshl NEW: ISO C 9x
719 ccosl NEW: ISO C 9x
720 cexp NEW: ISO C 9x
721 cexpf NEW: ISO C 9x
722 cexpl NEW: ISO C 9x
723 cimag NEW: ISO C 9x
724 cimagf NEW: ISO C 9x
725 cimagl NEW: ISO C 9x
726 clearerr_locked REMOVED
727 clntunix_create NEW: sunrpc ext
728 clog NEW: ISO C 9x
729 clog10 NEW: ISO C 9x
730 clog10f NEW: ISO C 9x
731 clog10l NEW: ISO C 9x
732 clogf NEW: ISO C 9x
733 clogl NEW: ISO C 9x
734 conj NEW: ISO C 9x
735 conjf NEW: ISO C 9x
736 conjl NEW: ISO C 9x
737 cpow NEW: ISO C 9x
738 cpowf NEW: ISO C 9x
739 cpowl NEW: ISO C 9x
740 cproj NEW: ISO C 9x
741 cprojf NEW: ISO C 9x
742 cprojl NEW: ISO C 9x
743 creal NEW: ISO C 9x
744 crealf NEW: ISO C 9x
745 creall NEW: ISO C 9x
746 creat64 NEW: LFS
747 csin NEW: ISO C 9x
748 csinf NEW: ISO C 9x
749 csinh NEW: ISO C 9x
750 csinhf NEW: ISO C 9x
751 csinhl NEW: ISO C 9x
752 csinl NEW: ISO C 9x
753 csqrt NEW: ISO C 9x
754 csqrtf NEW: ISO C 9x
755 csqrtl NEW: ISO C 9x
756 ctan NEW: ISO C 9x
757 ctanf NEW: ISO C 9x
758 ctanh NEW: ISO C 9x
759 ctanhf NEW: ISO C 9x
760 ctanhl NEW: ISO C 9x
761 ctanl NEW: ISO C 9x
762 des_setparity NEW: Secure RPC
763 ecb_crypt NEW: Secure RPC
764 endutxent NEW: Unix98
765 exp10 NEW: ISO C 9x
766 exp10f NEW: ISO C 9x
767 exp10l NEW: ISO C 9x
768 exp2 NEW: ISO C 9x
769 exp2f NEW: ISO C 9x
770 exp2l NEW: ISO C 9x
771 fattach NEW: STREAMS
772 fdetach NEW: STREAMS
773 fdim NEW: ISO C 9x
774 fdimf NEW: ISO C 9x
775 fdiml NEW: ISO C 9x
776 feclearexcept NEW: ISO C 9x
777 fegetenv NEW: ISO C 9x
778 fegetexceptflag NEW: ISO C 9x
779 fegetround NEW: ISO C 9x
780 feholdexcept NEW: ISO C 9x
781 feof_locked REMOVED
782 feraiseexcept NEW: ISO C 9x
783 ferror_locked REMOVED
784 fesetenv NEW: ISO C 9x
785 fesetexceptflag NEW: ISO C 9x
786 fesetround NEW: ISO C 9x
787 fetestexcept NEW: ISO C 9x
788 feupdateenv NEW: ISO C 9x
789 fflush_locked REMOVED
790 ffsl NEW: GNU ext.
791 ffsll NEW: GNU ext.
792 fgetpos64 NEW: LFS
793 fgets_unlocked NEW: GNU ext.
794 fileno_locked REMOVED
795 fma NEW: ISO C 9x
796 fmaf NEW: ISO C 9x
797 fmal NEW: ISO C 9x
798 fmax NEW: ISO C 9x
799 fmaxf NEW: ISO C 9x
800 fmaxl NEW: ISO C 9x
801 fmin NEW: ISO C 9x
802 fminf NEW: ISO C 9x
803 fminl NEW: ISO C 9x
804 fmtmsg NEW: Unix98
805 fopen64 NEW: LFS
806 fputc_locked REMOVED
807 fputs_unlocked NEW: GNU ext.
808 fread_unlocked NEW: GNU ext.
809 freopen64 NEW: LFS
810 fseeko NEW: Unix98
811 fsetpos64 NEW: LFS
812 fstatfs64 NEW: LFS
813 fstatvfs NEW: Unix98
814 fstatvfs64 NEW: LFS
815 ftello NEW: Unix98
816 ftello64 NEW: LFS
817 ftruncate64 NEW: LFS
818 ftw64 NEW: LFS
819 fwrite_unlocked NEW: GNU ext.
820 gai_strerror NEW: IPv6
821 gamma_r REMOVED
822 gammaf_r REMOVED
823 gammal_r REMOVED
824 getchar_locked REMOVED
825 getdate NEW: Unix98
826 getdate_err NEW: Unix98
827 getdate_r NEW: GNU ext.
828 getmsg NEW: STREAMS
829 getnameinfo NEW: IPv6
830 getnetname NEW: Secure RPC
831 getpmsg NEW: STREAMS
832 getpt NEW: Unix98 PTY
833 getrlimit64 NEW: LFS
834 getutxent NEW: Unix98
835 getutxid NEW: Unix98
836 getutxline NEW: Unix98
837 glob64 NEW: GNU ext.
838 globfree64 NEW: GNU ext.
839 gnu_get_libc_release NEW: GNU ext.
840 gnu_get_libc_version NEW: GNU ext.
841 grantpt NEW: Unix98 PTY
842 host2netname NEW: Secure RPC
843 iconv NEW: iconv
844 iconv_close NEW: iconv
845 iconv_open NEW: iconv
846 if_freenameindex NEW: IPv6
847 if_indextoname NEW: IPv6
848 if_nameindex NEW: IPv6
849 if_nametoindex NEW: IPv6
850 in6addr_any NEW: IPv6
851 in6addr_loopback NEW: IPv6
852 inet6_isipv4mapped NEW: IPv6
853 isastream NEW: STREAMS
854 iswblank NEW: GNU ext.
855 key_decryptsession NEW: Secure RPC
856 key_decryptsession_pk NEW: Secure RPC
857 key_encryptsession NEW: Secure RPC
858 key_encryptsession_pk NEW: Secure RPC
859 key_gendes NEW: Secure RPC
860 key_get_conv NEW: Secure RPC
861 key_secretkey_is_set NEW: Secure RPC
862 key_setnet NEW: Secure RPC
863 key_setsecret NEW: Secure RPC
864 llrint NEW: ISO C 9x
865 llrintf NEW: ISO C 9x
866 llrintl NEW: ISO C 9x
867 llround NEW: ISO C 9x
868 llroundf NEW: ISO C 9x
869 llroundl NEW: ISO C 9x
870 log2 NEW: ISO C 9x
871 log2f NEW: ISO C 9x
872 log2l NEW: ISO C 9x
873 lrint NEW: ISO C 9x
874 lrintf NEW: ISO C 9x
875 lrintl NEW: ISO C 9x
876 lround NEW: ISO C 9x
877 lroundf NEW: ISO C 9x
878 lroundl NEW: ISO C 9x
879 lseek64 NEW: LFS
880 makecontext NEW: Unix98
881 mempcpy NEW: GNU ext.
882 mmap64 NEW: LFS
883 moncontrol REMOVED
884 modify_ldt NEW: kernel
885 nan NEW: ISO C 9x
886 nanf NEW: ISO C 9x
887 nanl NEW: ISO C 9x
888 nearbyint NEW: ISO C 9x
889 nearbyintf NEW: ISO C 9x
890 nearbyintl NEW: ISO C 9x
891 netname2host NEW: Secure RPC
892 netname2user NEW: Secure RPC
893 nexttoward NEW: ISO C 9x
894 nexttowardf NEW: ISO C 9x
895 nexttowardl NEW: ISO C 9x
896 nftw NEW: Unix98
897 nftw64 NEW: LFS
898 open64 NEW: LFS
899 passwd2des NEW: Secure RPC
900 pow10 NEW: GNU ext.
901 pow10f NEW: GNU ext.
902 pow10l NEW: GNU ext.
903 pread NEW: Unix98
904 pread64 NEW: LFS
905 printf_size NEW: GNU ext.
906 printf_size_info NEW: GNU ext.
907 profil_counter REMOVED
908 pthread_mutexattr_getkind_np REPLACED
909 pthread_mutexattr_setkind_np REPLACED
910 ptsname NEW: Unix98 PTY
911 ptsname_r NEW: Unix98 PTY
912 putc_locked REMOVED
913 putchar_locked REMOVED
914 putgrent NEW: GNU ext.
915 putmsg NEW: STREAMS
916 putpmsg NEW: STREAMS
917 pututxline NEW: Unix98
918 pwrite NEW: Unix98
919 pwrite64 NEW: LFS
920 readdir64 NEW: LFS
921 readdir64_r NEW: LFS
922 remquo NEW: ISO C 9x
923 remquof NEW: ISO C 9x
924 remquol NEW: ISO C 9x
925 round NEW: ISO C 9x
926 roundf NEW: ISO C 9x
927 roundl NEW: ISO C 9x
928 rtime NEW: GNU ext.
929 scalbln NEW: ISO C 9x
930 scalblnf NEW: ISO C 9x
931 scalblnl NEW: ISO C 9x
932 scandir64 NEW: LFS
933 sendfile NEW: kernel
934 setcontext NEW: Unix98
935 setrlimit64 NEW: LFS
936 setutxent NEW: Unix98
937 sighold NEW: Unix98
938 sigignore NEW: Unix98
939 sigqueue NEW: POSIX.1b
940 sigrelse NEW: Unix98
941 sigset NEW: POSIX.1b
942 sigtimedwait NEW: POSIX.1b
943 sigwaitinfo NEW: POSIX.1b
944 sincos NEW: GNU ext.
945 sincosf NEW: GNU ext.
946 sincosl NEW: GNU ext.
947 statfs64 NEW: LFS
948 statvfs NEW: Unix98
949 statvfs64 NEW: LFS
950 strcasestr NEW: GNU ext.
951 strtoimax NEW: ISO C 9x
952 strtoumax NEW: ISO C 9x
953 strverscmp NEW: GNU ext.
954 svcauthdes_stats NEW: Secure RPC
955 svcunix_create NEW: sunrpc etx
956 svcunixfd_create NEW: sunrpc ext
957 swapcontext NEW: Unix98
958 tcgetsid NEW: Unix98 PTY
959 tdestroy NEW: GNU ext.
960 tgamma NEW: ISO C 9x
961 tgammaf NEW: ISO C 9x
962 tgammal NEW: ISO C 9x
963 tmpfile64 NEW: LFS
964 trunc NEW: ISO C 9x
965 truncate64 NEW: LFS
966 truncf NEW: ISO C 9x
967 truncl NEW: ISO C 9x
968 umount2 NEW: kernel
969 unlockpt NEW: Unix98 PTY
970 updwtmpx NEW: Unix98
971 user2netname NEW: Secure RPC
972 utmpxname NEW: Unix98
973 versionsort NEW: GNU ext.
974 versionsort64 NEW: GNU ext.
975 waitid NEW: Unix98
976 wcscasecmp NEW: GNU ext.
977 wcsncasecmp NEW: GNU ext.
978 wcsnlen NEW: GNU ext.
979 wcstoimax NEW: ISO C 9x
980 wcstoll NEW: ISO C 9x
981 wcstoull NEW: ISO C 9x
982 wcstoumax NEW: ISO C 9x
983 wcswcs NEW: Unix98
984 wordexp NEW: POSIX.2
985 wordfree NEW: POSIX.2
986 write_profiling REMOVED
987 xdecrypt NEW: Secure RPC
988 xdr_authdes_cred NEW: Secure RPC
989 xdr_authdes_verf NEW: Secure RPC
990 xdr_cryptkeyarg NEW: Secure RPC
991 xdr_cryptkeyarg2 NEW: Secure RPC
992 xdr_cryptkeyres NEW: Secure RPC
993 xdr_getcredres NEW: Secure RPC
994 xdr_key_netstarg NEW: Secure RPC
995 xdr_key_netstres NEW: Secure RPC
996 xdr_keybuf NEW: Secure RPC
997 xdr_keystatus NEW: Secure RPC
998 xdr_netnamestr NEW: Secure RPC
999 xdr_sizeof NEW: Secure RPC
1000 xdr_unixcred NEW: sunrpc ext
1001 xencrypt NEW: Secure RPC
1002 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1003 \f
1004 Version 2.0.6
1006 * more bug fixes
1008 \f
1009 Version 2.0.5
1011 * more bug fixes
1013 * inet_ntoa is thread-safe
1015 * updwtmp is moved from libutil to libc
1017 * rewrite of cbrt function
1019 * update of timezone data
1020 \f
1021 Version 2.0.4
1023 * more bug fixes
1024 \f
1025 Version 2.0.3
1027 * more bug fixes
1028 \f
1029 Version 2.0.2
1031 * more bug fixes
1033 * add atoll function
1035 * fix complex problems in Berkeley DB code
1037 * fix math functions
1038 \f
1039 Version 2.0.1
1041 * fixed lots of header problems (especially Linux/GNU specific)
1043 * dynamic loader preserves all registers
1045 * Roland McGrath provided support for handling of auxiliary objects in
1046 the ELF dynamic loader.
1048 * support for parallel builds is improved
1049 \f
1050 Version 2.0
1052 * GNU extensions are no longer declared by default. To enable them you
1053 must define the macro `_GNU_SOURCE' in your program or compile with
1054 `-D_GNU_SOURCE'.
1056 * The library has changed from using GNU ld symbol aliases to using weak
1057 symbols where available. The ELF object file format supports weak
1058 symbols; GNU ld also supports weak symbols in the a.out format. (There
1059 is also now support for other GNU ld extensions in ELF. Use the
1060 `--with-elf' option to configure to indicate you have ELF, and
1061 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1062 of many files which contained only symbol aliases, reducing the size of
1063 the source and the compiled library; many other files were renamed to
1064 less cryptic names previously occupied by the symbol alias files.
1065 There is a new header file <elf.h> for programs which operate on
1066 files in the ELF format.
1068 * Converted to Autoconf version 2, so `configure' has more options.
1069 Run `configure --help' to see the details.
1071 * The library can now be configured to build profiling, highly-optimized
1072 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1073 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1074 `configure' enable building these extra libraries. The shared library is
1075 built by default when using both ELF and GNU ld. When shared libraries
1076 are enabled, the new library `-ldl' is available for arbitrary run-time
1077 loading of shared objects; its interface is defined in <dlfcn.h>. The
1078 new header file <link.h> gives access to the internals of the run-time
1079 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1080 application of same name on other systems and it provides information
1081 about dynamically linked binaries.
1083 * The C library now provides the run-time support code for profiling
1084 executables compiled with `-pg'. Programs can control the profiling code
1085 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1086 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1087 the support for this file format was contributed by David Mosberger-Tang.
1089 * The math code has been replaced with a math library based on fdlibm from
1090 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1091 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1092 functions. The math functions now reside in a separate library, so
1093 programs using them will need to use `-lm' their linking commands.
1095 * John C. Bowman contributed optimized ix87 assembler inline functions.
1097 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1098 mechanism similar to that found in Solaris 2. This is now used for the
1099 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1100 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1101 file controls what services are used for each individual database. This
1102 works by loading shared libraries with names specified in `nsswitch.conf',
1103 so service modules can be changed or added at any time without even
1104 relinking any program. Currently there are the file, db, and NIS based
1105 NSS services available.
1107 * The new functions `strtoq' and `strtouq' parse integer values from
1108 strings, like `strtol' and `strtoul', but they return `long long int' and
1109 `unsigned long long int' values, respectively (64-bit quantities).
1111 * The new functions `strtof' and `strtold' parse floating-point values from
1112 strings, like `strtod', but they return `float' and `long double' values,
1113 respectively (on some machines `double' and `long double' are the same).
1115 * Ulrich Drepper has contributed new implementations of the floating-point
1116 printing and reading code used in the `printf' family of functions and
1117 `strtod', `strtof', and `strtold'. These new functions are perfectly
1118 accurate, and much faster than the old ones.
1120 * The implementation of the POSIX locale model was completely rewritten by
1121 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1122 to compile the POSIX locale definition.
1124 * The former dummy implementations of the strcoll and strxfrm function are
1125 now replaced by fully functional code contributed by Ulrich Drepper. The
1126 collation information comes from the POSIX locale definitions.
1128 * The new header <langinfo.h> defines an interface for accessing
1129 various locale-dependent data (using the locale chosen with `setlocale').
1131 * Ulrich Drepper has contributed a new suite of functions for operation on
1132 wide-character and multibyte-character strings, in <wchar.h>;
1133 and classification and case conversion of wide characters, in <wctype.h>.
1134 These new functions are conforming to the ISO C, Amendement 1 specification.
1136 * There is now a second implementation of the standard I/O library available.
1137 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1138 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1140 * You can now use positional parameter specifications in format strings
1141 for the `printf' and `scanf' families of functions. For example,
1142 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1143 ``Number 6, Mr Jones''. This is mainly useful when providing different
1144 format strings for different languages, whose grammars may dictate
1145 different orderings of the values being printed. To support this
1146 feature, the interface for `register_printf_handler' has changed; see
1147 the header file <printf.h> for details.
1149 * The `printf' and `scanf' families of functions now understand a new
1150 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1151 to group numbers as indicated by the locale; for `scanf' and friends, this
1152 says to accept as valid only a number with all the proper grouping
1153 separators in the right places. In the default "C" locale, numbers are
1154 not grouped; but locales for specific countries will define the usual
1155 conventions (i.e. separate thousands with `,' in the US locale).
1157 * The pgrp functions have been regularized, slightly incompatibly but much
1158 less confusingly. The core functions are now `getpgid' and `setpgid',
1159 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1160 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1161 provided for compatibility. There is no longer an incompatible `getpgrp'
1162 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1164 * The new header file <fts.h> and suite of functions simplify programs that
1165 operate on directory trees. This code comes from 4.4 BSD.
1167 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1168 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1169 NSS scheme used in glibc.
1171 * There is a new malloc debugging hook `__memalign_hook'.
1173 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1174 `unsigned int' in <sys/types.h>. These are for compatibility only and
1175 their use is discouraged.
1177 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1178 done differently, so that it works even without GNU ld.
1180 * New function `euidaccess' checks allowed access to a file like `access',
1181 but using the effective IDs instead of the real IDs.
1183 * The time zone data files have been updated for the latest and greatest
1184 local time conventions of the countries of the world.
1186 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1187 see <dirent.h>.
1189 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1190 for formatting floating-point numbers. They are provided only for
1191 compatibility; new programs should use `sprintf' instead. There are
1192 also equivalent function for the `long double' floating-point type and
1193 all functions also exist in a reentrant form.
1195 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1196 functions for maintaining the login-record files (primarily of use to
1197 system programs such as `login'), and convenient functions for
1198 allocating and initializing a pseudo-terminal (pty) device.
1200 * Ulrich Drepper has contributed new support for System V style
1201 shared memory and IPC on systems that support it.
1203 * Ulrich Drepper has contributed several miscellaneous new functions found
1204 in System V: The `hsearch' family of functions provide an effective
1205 implementation of hash tables; `a64l' and `l64a' provide a very simple
1206 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1207 number generator.
1209 * Ulrich Drepper has contributed new reentrant counterparts for the
1210 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1212 * Ulrich Drepper has contributed new, highly-optimized versions of several
1213 string functions for the i486/Pentium family of processors.
1215 * Ulrich Drepper has updated the Linux-specific code, based largely
1216 on work done in Hongjiu Lu's version of GNU libc for Linux.
1217 The GNU library now supports Linux versions 2.0.10 and later,
1218 using the ELF object file format (i[3456]86-*-linux).
1220 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1222 * David Mosberger-Tang and Richard Henderson have ported the C library
1223 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1224 dynamic linking support for ELF/Alpha.
1226 * Richard Henderson contributed several Alpha optimized assembler function
1227 for arithmetic and string handling.
1229 * Ulrich Drepper has contributed a new set of message catalog functions to
1230 support multiple languages using the <libintl.h> interface, for use with
1231 his new package GNU gettext. Translation volunteers have contributed
1232 catalogs of the library's messages in Spanish, German, and Korean.
1234 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1235 program and the `catgets' function for reading the catalog files it
1236 creates. (The <libintl.h> interface is preferred; we include the
1237 <nl_types.h> interface using `catgets' only for source compatibility with
1238 programs already written to use it.)
1240 * New header file <values.h> gives SVID-compatible names for <limits.h>
1241 constants.
1243 * Various new macros, declarations, and small header files for compatibility
1244 with 4.4 BSD.
1246 * New function `group_member' is a convenient way to check if a process has
1247 a given effective group ID.
1249 * When using GCC 2.7 and later, the socket functions are now declared in a
1250 special way so that passing an argument of type `struct sockaddr_in *',
1251 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1252 `struct sockaddr *' type, does not generate a type-clash warning.
1254 * New function `error' declared in header file <error.h> is a convenient
1255 function for printing error messages and optionally exiting; this is the
1256 canonical function used in GNU programs. The new functions `err', `warn',
1257 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1258 doing the same thing.
1260 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1261 POSIX.2 `glob' function to do ~ and {...} expansion.
1263 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1264 `clearenv' which is used in POSIX.9 is also available.
1266 * New function `getsid' returns session ID number on systems that support it.
1268 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1269 files <db.h> and <mpool.h> provide a rich set of functions for several
1270 types of simple databases stored in memory and in files, and <ndbm.h> is
1271 an old `ndbm'-compatible interface using the `db' functions. Link with
1272 `-ldb' to get these functions.
1274 * New macro `strdupa' copies a string like `strdup', but uses local stack
1275 space from `alloca' instead of dynamic heap space from `malloc'.
1277 * New function `strnlen' is like `strlen' but searches only a given maximum
1278 number of characters for the null terminator. `stpncpy', `strndup' and
1279 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1280 function.
1282 * New function `statfs' in header <sys/statfs.h>.
1284 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1285 provide convenient functions for operating on blocks of null-terminated
1286 strings.
1288 * A new suite of functions in <utmp.h> handle all the details of reading
1289 and writing the utmp file.
1291 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1292 Thorsten Kukuk.
1294 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1295 completely POSIX compliant and also implemented the extended functionality
1296 to handle alternate digit representation and alternate era date formats.
1298 * Ulrich Drepper provided an implementation of the `strptime' function
1299 defined in XPG4.2 which transforms a string into a `struct tm' value.
1301 * Paul Eggert provided the tzselect shell script as part of the timezone
1302 code. The shell script makes it easy to select the correct timezone
1303 specification.
1305 * The implementation of the malloc family of functions is completely replaced
1306 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1307 The implementation uses the mmap function (if available) and it is
1308 optimized for the use in multi threaded programs.
1310 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1311 functions. This new functionality is usable by specifying a special
1312 salt string and it is compatible with implementation on *BSD systems.
1314 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1315 `getsubopt' to handle second level command line options, `bsd_signal'
1316 to access BSD style `signal' functionality, the obsolete `regexp' style
1317 expression matcher.
1319 * the `lchown' function is available on system which support this
1320 functionality.
1322 * The implementation of the shadow password handling function was contributed
1323 by Ulrich Drepper.
1325 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1327 * POSIX.1g support was added. The <sys/select.h> header is available,
1328 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1329 implementation of `getaddrinfo'.
1330 \f
1331 Version 1.09
1333 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1335 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1336 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1338 * The new function `daemon' from 4.4 BSD is useful for server programs that
1339 want to put themselves in the background.
1341 * Joel Sherrill has contributed support for several standalone boards that
1342 run without an operating system.
1344 * `printf', `scanf' and friends now accept a `q' type modifier for long
1345 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1347 * All of the code taken from BSD (notably most of the math and networking
1348 routines) has been updated from the BSD 4.4-Lite release.
1350 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1352 * The new functions `getdomainname' and `setdomainname' fetch or change the
1353 YP/NIS domain name. These are system calls which exist on systems which
1354 have YP (aka NIS).
1356 * The time zone data files have been updated for the latest international
1357 conventions.
1359 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1360 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1361 \f
1362 Version 1.08
1364 * The C library now includes support for Sun RPC, from Sun's free
1365 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1366 are included. (There is still no support for YP.)
1368 * Tom Quinn has contributed a port of the C library to SGI machines running
1369 Irix 4 (mips-sgi-irix4).
1371 * The new `lockf' function is a simplified interface to the locking
1372 facilities of `fcntl', included for compatibility.
1374 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1376 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1378 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1379 compatibility.
1381 * The error message printed by `assert' for a failed assertion now includes
1382 the name of the program (if using GNU ld) and the name of the calling
1383 function (with versions of GCC that support this).
1385 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1387 * The library now includes the <sys/mman.h> header file and memory
1388 management functions `mmap', `munmap', `mprotect', `msync', and
1389 `madvise', on systems that support those facilities.
1391 * The interface for `mcheck' has changed slightly: the function called to
1392 abort the program when an allocation inconsistency is detected now takes
1393 an argument that indicates the type of failure. The new function
1394 `mprobe' lets you request a consistency check for a particular block at
1395 any time (checks are normally done only when you call `free' or `realloc'
1396 on a block).
1398 * It is now possible to easily cross-compile the C library, building on one
1399 system a library to run on another machine and/or operating system. All
1400 you need to do is set the variable `HOST_CC' in `configparms' to the
1401 native compiler for programs to run on the machine you are building on (a
1402 few generator programs are used on Unix systems); set `CC' to the
1403 cross-compiler.
1405 * The new function `fexecve' (only implemented on the GNU system) executes
1406 a program file given a file descriptor already open on the file.
1407 \f
1408 Version 1.07
1410 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1411 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1413 * You can set the variable `libprefix' in `configparms' to specify a prefix
1414 to be prepended to installed library files; this makes it easy to install
1415 the GNU C library to be linked as `-lgnuc' or whatever.
1417 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1418 copies a limited number of characters from a string, and returns the
1419 address of the last character written.
1421 * You no longer need to check for whether the installed `stddef.h' is
1422 compatible with the GNU C library. configure now checks for you.
1424 * You can now define a per-stream `fileno' function to convert the
1425 stream's cookie into an integral file descriptor.
1427 * ``malloc (0)'' no longer returns a null pointer. Instead, it
1428 allocates zero bytes of storage, and returns a unique pointer which
1429 you can pass to `realloc' or `free'. The behavior is undefined if
1430 you dereference this pointer.
1432 * The C library now runs on Sony NEWS m68k machines running either
1433 NewsOS 3 or NewsOS 4.
1435 * The new `syscall' function is a system-dependent primitive function
1436 for invoking system calls. It has the canonical behavior on Unix
1437 systems, including unreliable return values for some calls (such as
1438 `pipe', `fork' and `getppid').
1440 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
1441 to `EAGAIN', which is the preferred name. On systems whose kernels
1442 use two distinct codes, the C library now translates EWOULDBLOCK to
1443 EAGAIN in every system call function.
1444 \f
1445 Version 1.06
1447 * The GNU C Library Reference Manual is now distributed with the library.
1448 `make dvi' will produce a DVI file of the printed manual.
1449 `make info' will produce Info files that you can read on line using C-h i
1450 in Emacs or the `info' program.
1451 Please send comments on the manual to bug-glibc-manual@gnu.org.
1453 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
1455 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
1457 * Jason Merrill has contributed a port to the Sequent Symmetry running
1458 Dynix version 3 (i386-sequent-dynix).
1460 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
1461 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
1463 * New function `memory_warnings' lets you arrange to get warnings when
1464 malloc is running out of memory to allocate, like Emacs gives you.
1466 * The C library now contains the relocating allocator used in Emacs 19 for
1467 its editing buffers. This allocator (ralloc) minimizes allocation
1468 overhead and fragmentation by moving allocated regions around whenever it
1469 needs to. You always refer to a ralloc'd region with a "handle" (a
1470 pointer to a pointer--an object of type `void **').
1472 * There is a new `printf' format: `%m' gives you the string corresponding
1473 to the error code in `errno'.
1475 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
1476 or `%[' conversion, but instead of filling in a fixed-sized buffer you
1477 pass, the `a' modifier says to fill in a `char **' you pass with a
1478 malloc'd string.
1480 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
1481 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
1482 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
1484 * `mkstemp' is a traditional Unix function to atomically create and open a
1485 uniquely-named temporary file.
1486 \f
1487 Version 1.05
1489 * The standard location for the file that says what the local timezone is
1490 has changed again. It is now `/usr/local/etc/localtime' (or more
1491 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
1493 * The distribution no longer contains any files with names longer than 14
1494 characters.
1496 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
1497 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
1499 * New functions `ttyslot' and `syslog' from 4.4 BSD.
1500 \f
1501 Version 1.04
1503 * The configuration process has changed quite a bit. The `configure'
1504 script is now used just like the configuration scripts for other GNU
1505 packages. The `sysdeps' directory hierarchy is much rearranged.
1506 The file `INSTALL' explains the new scheme in detail.
1508 * The header files no longer need to be processed into ANSI C and
1509 traditional C versions. There is just one set of files to install, and
1510 it will work with ANSI or old C compilers (including `gcc -traditional').
1512 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
1513 MIPS DECStation running Ultrix 4.
1515 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
1516 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
1517 made itself into a shared library.
1519 * Yet further improved support for the i386, running 4.3 BSD-like systems
1520 (such as Mach 3 with the Unix single-server), or System V.
1522 * New function `strncasecmp' to do case-insensitive string comparison
1523 with limited length.
1525 * New function `strsep' is a reentrant alternative to `strtok'.
1527 * New functions `scandir' and `alphasort' for searching directories.
1529 * New function `setenv' is a better interface to `putenv'.
1531 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
1532 function for traversing a directory tree.
1534 * The GNU obstack package is now also part of the C library.
1535 The new function `open_obstack_stream' creates a stdio stream that
1536 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
1537 formatted output directly to an obstack.
1539 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
1540 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
1542 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
1544 * The new functions `strfry' and `memfrob' do mysterious and wonderful
1545 things to your strings.
1547 * There are some new test programs: test-fseek, testmb, and testrand.
1549 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
1550 These ports are not finished, but are a good starting place for really
1551 supporting those systems.
1553 * `/etc/localtime' is now the standard location for the file that says what
1554 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
1555 This follows the general principle that `/etc' is the place for all local
1556 configuration files.
1558 * The C library header files now use `extern "C"' when used by the C++
1559 compiler, so the C library should now work with C++ code.
1561 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
1562 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
1563 in <strings.h>.)
1565 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
1566 function which uses the `merge sort' algorithm, and is said to be
1567 significantly faster than the old GNU `qsort' function. Merge sort is
1568 now the standard `qsort' function. The new algorithm can require a lot
1569 of temporary storage; so, the old sorting function is called when the
1570 required storage is not available.
1572 * The C library now includes Michael Glad's Ultra Fast Crypt, which
1573 provides the Unix `crypt' function, plus some other entry points.
1575 * The code and header files taken from 4.4 BSD have been updated with the
1576 latest files released from Berkeley.
1577 \f
1578 ----------------------------------------------------------------------
1579 Copyright information:
1581 Copyright (C) 1992-1999,2000,2001,2002,2003,2004,2005,2006
1582 Free Software Foundation, Inc.
1584 Permission is granted to anyone to make or distribute verbatim copies
1585 of this document as received, in any medium, provided that the
1586 copyright notice and this permission notice are preserved,
1587 thus giving the recipient permission to redistribute in turn.
1589 Permission is granted to distribute modified versions
1590 of this document, or of portions of it,
1591 under the above conditions, provided also that they
1592 carry prominent notices stating who last changed them.
1593 \f
1594 Local variables:
1595 version-control: never
1596 End: