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1 GNU C Library NEWS -- history of user-visible changes. 2006-07-10
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 \f
37 Version 2.4
39 * More overflow detection functions.
41 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
42 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
44 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
45 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
46 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
47 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
48 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
49 by Masahide Washizawa.
51 * It is now possible to install audit libraries for the dynamic linker using
52 LD_AUDIT. Implemented by Ulrich Drepper.
54 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
55 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
56 For a libc and libpthread that works well on Linux 2.4 kernels, we
57 recommend using the stable 2.3 branch.
59 * The new function open_wmemstream acts like open_memstream,
60 but uses a wchar_t wide character buffer.
62 * The new function ppoll is an improved version of poll, similar to pselect.
64 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
65 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
66 renameat, unlinkat, linkat, symlinkat, readlinkat.
68 * New Linux kernel system calls: unshare,
69 inotify_init, inotify_add_watch, inotify_rm_watch.
71 * The euidaccess function is now also known by the alias eaccess,
72 for compatibility with some other systems.
74 * Timezone data updated to 2006b version.
75 \f
76 Version 2.3.6
78 * The following bugs are resolved with this release:
80 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
81 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
82 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
83 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
84 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
85 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
87 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
89 * As of this release, GCC 4 can be used to compile the C Library.
91 * Timezone data updated to 2005m version.
92 \f
93 Version 2.3.5
95 * The following bugs are resolved with this release:
97 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
98 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
99 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
100 777, 787, 821, 822, 823, 825
102 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
103 \f
104 Version 2.3.4
106 * Support for RFC 3678. Real implementations exist only for Linux so far.
107 Implemented by Ulrich Drepper.
109 * nscd can now cache entries persistently. Expiring entries are reloaded.
110 For speedups the cache can be shared in memory with client processes.
111 Implemented by Ulrich Drepper.
113 * nscd can now perform SELinux checks.
114 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
116 * getaddrinfo queries are now cached. Canonical name lookup is performed
117 efficiently.
118 Implemented by Ulrich Drepper.
120 * The nothrow function attribute is used when headers are used by gcc when
121 compiling C code. This can avoid significant amounts of exception
122 handling data.
124 * The malloc functions perform more error checking and are stricter when
125 it comes to reacting on errors. The default action is to terminate
126 the process after showing an error message. Implemented by Ulrich Drepper.
128 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
129 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
131 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
132 namespaces using the new function dlmopen(). This feature is of course,
133 like most other dynamic loading functionality, not available in statically
134 linked applications. Implemented by Ulrich Drepper.
136 * Low-overhead boundary checking variants of string and some stdio functions
137 were added. These are to be used in conjunction with a gcc patch by
138 Jakub Jelinek which adds calls to these functions if possible.
139 Implemented by Jakub Jelinek and Ulrich Drepper.
141 * Old code for several operating systems and machine architectures that
142 have not been in working condition in a long time have been removed from
143 the main source tree maintained by the GNU C Library's maintainers.
144 These files are now reside in the separate `ports' source module
145 that is usable as an add-on when building the library.
146 \f
147 Version 2.3.3
149 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
150 interrogate the dynamic linker, compatible with the Solaris interface.
152 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
153 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
155 * getifaddrs now uses the netlink interface on Linux to get its information.
156 Implemented by Thorsten Kukuk.
158 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
159 Implemented by Ulrich Drepper.
161 * support for non-executable stacks on x86 has been added. Changes mostly
162 by Roland McGrath.
164 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
165 and Ulrich Drepper.
167 * getaddrinfo now performs destination address selection according to
168 RFC 3484.
169 \f
170 Version 2.3.2
172 * Thread-safe interfaces for many functions that access locale data
173 were added in version 2.3, but these features were omitted from NEWS.
174 Many functions have variants with an `_l' suffix that take a `locale_t'
175 object as a parameter rather than consulting the current locale.
176 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
177 create and maintain `locale_t' objects. Additionally, the new function
178 `uselocale' sets "the current locale" (as used by functions not so
179 parameterized) set for an individual thread. These features were added
180 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
182 * The functions getresuid, getresgid, setresuid, and setresgid, which
183 have long been available on Linux, are now declared in <unistd.h>
184 and are now also available on the Hurd.
186 * ELF thread-local storage support (TLS) now works on x86-64.
188 * The new dynamic string token $LIB is expanded in shared library names.
189 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
191 * Aldy Hernandez contributed complete software floating point support for
192 PowerPC machines with no FPU.
194 * fexecve is implemented on Linux.
196 * The `btowc' function should work at least twice as fast due to
197 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
199 * With approriate thread add-ons cancelable functions are now implemented
200 in libc.so as well. No need to call the function in libpthread. This
201 change allowed to finally disable the incorrect and expensive handling
202 of weak definition in ld.so.
204 * Yet more PLT entries in libc.so have been removed. We finally arrived
205 at the bare minimum. Startup times improved appropriately.
207 * Support for the new Linux/x86 system call interface was added. The
208 AT_SYSINFO auxiliary vector entry is recognized and handled.
209 \f
210 Version 2.3
212 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
213 charsets.
215 * iconv (the program and the interface) now accepts empty names (excluding
216 options like //TRANSLIT) to mean "use charset of current locale".
218 * localedef can now transliterate characters in strings which are not in
219 the provided charmap. The information from the input locale is used.
221 * Prelinking support was added for ELF targets. This requires additional
222 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
224 * Read-only stdio streams now use mmap to speed up operation by eliminating
225 copying and buffer underflows. To use add 'm' to the mode string of
226 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
228 * The malloc functions were completely rewritten by Wolfram Gloger based
229 on Doug Lea's malloc-2.7.0.c.
231 * Isamu Hasegawa contributed a completely new and POSIX-conformant
232 implementation of regex.
234 * Bruno Haible upgraded the iconv and locale implementation to support
235 Unicode 3.2.
237 * Contents of the LC_* and LANG environment variables in the CEN style are
238 not recognized anymore. It never was used. Change by Ulrich Drepper.
240 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
241 thread-local storage (TLS) ABI on some platforms.
242 Changes by Ulrich Drepper. SH support by Kaz Kojima.
244 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
245 EUC-JISX0213, and TSCII.
247 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
248 BSD-compatible interface for getting all network interface addresses.
249 Implementation for IPv4 by Roland McGrath.
251 * Loading of locale data is faster due to the introduction of a locale
252 archive. Implemented by Roland McGrath and Ulrich Drepper.
254 * Startup times are significantly reduced by not using exported functions
255 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
256 and Ulrich Drepper.
258 * Steven Munroe contributed a port to PowerPC64/Linux.
259 \f
260 Version 2.2.6
262 * The Hurd now uses the GNU libio implementation of stdio rather than the
263 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
265 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
266 with the same behavior as the Linux system call of the same name.
267 \f
268 Version 2.2.5
270 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
271 128-bit long double format.
273 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
274 IBM1161, and IBM1162 charsets.
276 * Andreas Jaeger contributed a port to x86-64/Linux.
278 * Peter Bruin contributed a port to PowerPC/Hurd.
280 * libc functions using I/O streams now can handle wide-oriented streams
281 as well.
283 * optimizations in the dynamic linker. Binaries created by recent binutils
284 versions start up quicker due to reduced time spent on relocations.
286 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
287 \f
288 Version 2.2.4
290 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
291 asinh, atanh, j0 for the 128-bit long double format.
293 * Bruno Haible updated all the code handling Unicode in some form to
294 support Unicode 3.1.
296 * Speed of regex for single-byte locales is back to previous levels.
297 Patch by Isamu Hasegawa.
299 * Alpha, SPARC, and IA-64 now also using floating stacks.
301 * Startup time of internationalized applications greatly improved through
302 iconv cache. Use iconvconfig to generate the cache file.
303 Contributed by Ulrich Drepper.
305 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
306 severe performance problems. Patch by David Mosberger.
308 * The Hurd port got a lot more functionality like AIO, various stdio
309 extensions, etc. Mainly done by Roland McGrath.
311 * mtrace can now lookup symbols in shared libraries.
312 \f
313 Version 2.2.3
315 * Intel's IA-64 math library is largely integrated. It provides fast and
316 accurate implementatations for most basic and standard math functions
317 in float, double, and long double format.
319 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
320 and asin for the 96-bit long double format and asin, log, tan for the
321 128-bit long double format.
323 * The beginning of a last-bit accurate math library by IBM Haifa were added.
324 The basic double functions exist today. Contributed by Abraham Ziv
325 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
326 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
328 * An asynchronous name lookup library was added. The interface is designed
329 after POSIX AIO. The proposal was circulated beforehand to get comments.
330 No negative ones came in. Implemented by Ulrich Drepper.
332 * Port to S390/64bit contributed by Martin Schwidefsky
333 <schwidefsky@de.ibm.com>.
335 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
336 of functions for Linux/IA-64.
338 * The RPC code is now thread safe. Threads can now use the same service
339 of different services at the same time. Patch by Eric Norum
340 <eric.norum@usask.ca> with some help by Ulrich Drepper.
342 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
343 family of functions for Linux/S390.
345 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
346 of functions for Linux/x86.
348 * Port to Linux/CRIS contributed by Axis Communications.
349 \f
350 Version 2.2.2
352 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
353 we can now check for namespace violations and missing declarations. The
354 result is that almost all headers are now Unix-compliant (as defined in
355 the upcoming XPG6). The negative side is that some programs might need
356 corrections, too, if they depend on the incorrect form of the headers in
357 previous versions which defined too many symbols and included too many
358 other headers.
360 * regex now handles multibyte character sets correctly.
361 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
363 * iconv (the program) does now conform to the upcoming XPG6 and handles
364 charmaps. Instead of the charset names the path of charmaps can be
365 provided and the conversion happens based on this data.
366 Contributed by Ulrich Drepper.
368 * The locale program now provides detailed information about the installed
369 locales. While
371 locale -a
373 only lists the names of the supported locales
375 locale -a --verbose
377 provides details such as country, language, and codeset name.
378 Contributed by Ulrich Drepper.
379 \f
380 Version 2.2.1
382 * The gencat program now parses the input file according to the charset
383 selected by the LC_CTYPE category. This is important for stateful
384 character sets. To make generating catalogs easier there is a way
385 to overwrite the charset selected by the locale: before the first
386 message or $ quote line the catalog can contain a line like
388 $ codeset=ISO-8859-2
390 to select the charset (ISO-8859-2 in this case).
392 Implemented by Shinya Hanataka and Ulrich Drepper.
394 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
395 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
396 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
398 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
399 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
401 * The LANGUAGE environment variable is now ignored unless the locale is
402 changed from the default "C" locale.
404 * The usual bug fixes.
405 \f
406 Version 2.2
408 * Greg McGary added runtime support for bounds checking using gcc's
409 new -fbounded-pointers option. ix86 target is complete. PowerPC
410 is in progress.
412 * Thorsten Kukuk added secure mode support to nscd.
414 * The Berkeley db libraries have been removed.
416 Related, the nss_db module is now in a separate package since it
417 obviously requires a database library being available.
419 * Wide character I/O streams implemented by Ulrich Drepper.
421 * Functions from the extended socket API added by Ulrich Drepper.
423 * Functions feenableexcept and fedisableexcept to control the
424 behaviour of individual exceptions have been added by Andreas Jaeger.
426 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
428 * The resolver code has been updated from bind 8.2.3-T5B which supports
429 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
430 and Mark Kettenis.
432 This change could in some situations effect backward compatibility. Since
433 now `_res' is a thread-local instead of a global variable, modifying it
434 in one thread does not have any effect in other threads.
436 The resolver library was also extended to allow IPv6 as the transport
437 protocol for the requests. This work was done by Stig Venaas.
439 * Compatibility code for K&R C compilers has been removed from the
440 header files. A ISO C compiler is needed to use the library
441 (conforming to either C89 or C99 standard).
443 * Complete rewrite of the localedef program to support multibyte character
444 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
445 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
446 Implemented by Ulrich Drepper.
448 Bruno Haible significantly improved the generation and use of the data
449 structures for the wide character tables.
451 * Plural handling in gettext implemented by Ulrich Drepper.
453 * The utmp daemon has been removed.
455 * The port to MIPS-Linux has been finished by Andreas Jaeger.
457 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
458 and Yutaka Niibe.
460 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
462 * POSIX barriers implemented by Kaz Kylheku.
464 * POSIX spawn function family implemented by Ulrich Drepper.
466 * POSIX spinlocks are now available.
468 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
470 * the configure option --enable-kernel=X.Y.Z allows to strip out
471 compatibility for kernel versions before X.Y.Z. This is currently only
472 implemented for Linux.
474 * the sockaddr_in6 structure changed. The IPv6 working group added a new
475 field sin6_scope_id. This means that all programs using IPv6 should be
476 recompiled. Don't expect binary compatibility with previous glibc
477 versions.
479 * various conversion modules for IBM character sets contributed by
480 Masahide Washizawa.
482 * IA-64 port by Jes Sorensen and HJ Lu.
484 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
485 Compiling the GNU C Library for Linux/ia64
486 ******************************************
488 Please refer to the file INSTALL in the same directory as you found
489 this file for general information about configuring and compiling
490 glibc.
492 For general inquiries about glibc under Linux/ia64 please use the
493 following mailing list linux-ia64@linuxia64.org or one of the relevant
494 glibc mailing lists.
496 Recommended Tools for Compilation
497 =================================
499 In order for glibc-2.2 to build correctly on the ia64 you need at
500 least the following versions of the GNU tools (the :
502 * The Cygnus toolchain snapshot for the ia64 as of August 4
503 including the provided set of patches. It is however recommend
504 you use the October 24 toolchain snapshot or a more recent version.
506 OR alternatively you can try the following (the Cygnus toolchain is
507 the recommended solution):
509 * GCC and binutils, GAS and GNU LD out of CVS from
510 sources.redhat.com as of August 28, 2000 or later. The CVS tree
511 may require special patches to work properly on the ia64.
513 Configuring and compiling GNU Libc for Linux/ia64
514 =================================================
516 The library requires Linux kernel version 2.4.0-test4-000728 or
517 later to funtion properly. Besides that it support for debug libraries
518 is currently untested. Hence the following options
519 are required for configuring the library:
521 --disable-debug --enable-kernel=2.4.0
523 It is also important that you make sure the library picks up the
524 appropriate kernel header files, if you do not have recent enough
525 kernel headers in /usr/src/linux/include, you should use the
526 --with-headers=<path> option to specify the location.
528 As an example I personally use the following options to configure
529 the library:
531 --disable-debug
532 --disable-cvs
533 --enable-kernel=2.4.0
534 --host=ia64-linux
535 --enable-add-ons=yes
536 --prefix=/usr
537 --with-headers=/home/jes/linux/include
540 Good luck
542 Jes Sorensen <jes@linuxcare.com>,
543 November 14th, 2000
544 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
545 \f
546 Version 2.1.3
548 * bug fixes
550 \f
551 Version 2.1.2
553 * bug fixes
555 \f
556 Version 2.1.1
558 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
560 * New xdr functions are added; some rpc functions are now 64bit clean.
562 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
564 * Fixed known incompatibilities with glibc 2.0.
566 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
568 * Optimized a number of functions (especially the ELF dynamic loader).
570 * Update timezone data files.
572 * lots of charmaps corrections
574 * some new locale definitions and charmaps
576 \f
577 Version 2.1
579 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
580 conform to POSIX member type requirements. Symbol versions have been
581 adjusted as needed within the library, and for direct use by applications,
582 but there is potential for problems if third-party libraries use
583 struct timeval as part of their interface. This does not present
584 a problem for X and other "essential" system libraries.
586 * An additional locale model to support C++ Standard Library locale
587 model and probably more was implemented by Ulrich Drepper.
589 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
590 symbol level.
592 * Miles Bader provided the `argp' function family to support hierachical
593 command line argument parsing, layered on top of getopt.
595 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
597 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
598 numbers.
600 * scanf recognizes the %a and %A format for scanning floating point numbers.
602 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
603 information and interfaces for the available integer types.
605 * about 130 new math functions were added to implement the ISO C9x math
606 library.
608 * the new header <complex.h> contains definitions of the complex math
609 functions from ISO C 9X.
611 * the new header <tgmath.h> defines generic macros to use complex or
612 real valued functions.
614 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
616 * Andreas Jaeger provided a test suite for the math library.
618 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
620 * Ulrich Drepper added character set conversion functions (iconv).
622 * Optimized string functions have been added.
624 * The localedata addon is now part of glibc.
626 * An implementation of profiling shared libraries was added by Ulrich Drepper.
628 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
629 daemon for NSS (nscd).
631 Missing a better place here are some numbers on improvements. Under
632 Linux 2.1.125 un-tar-ing the kernel sources takes
634 user system wall
636 using local files 12.19s 6.88s 22.91s
638 using NIS 13.92s 8.91s 26.34s
640 using NIS & nscd 10.37s 7.34s 25.30s
642 using NIS+ 27.57s 30.37s 640.46s
644 using NIS+ & nscd 10.25s 7.83s 26.51s
646 using NIS & old nscd [1] 13.83s 8.32s 29.60s
648 Keep in mind that non-namelookup related operations dominate above times.
649 It was just a common complain that using NIS+ unpacking the kernel is
650 horribly slow.
652 [1] The old nscd implementation is not available anymore since it was
653 distributed with glibc up to version 2.0.98 and thus is now replaced.
655 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
657 * Mark Kettenis provided a Hesiod NSS module.
659 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
660 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
662 * rcmd can now handle netgroups (Dick Streefland).
664 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
665 Bambrough.
667 * Support for the IPv6 protocol has been added to the socket API, as per the
668 latest draft standards.
670 * Support for Linux 2.2 has been added.
672 * Interface changes relative to the latest 2.0.x release:
673 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
674 addseverity NEW: Unix98
675 alphasort64 NEW: LFS
676 argp_err_exit_status NEW: argp, GNU ext
677 argp_error NEW: argp, GNU ext
678 argp_failure NEW: argp, GNU ext
679 argp_help NEW: argp, GNU ext
680 argp_parse NEW: argp, GNU ext
681 argp_program_bug_address NEW: argp, GNU ext
682 argp_program_version NEW: argp, GNU ext
683 argp_program_version_hook NEW: argp, GNU ext
684 argp_state_help NEW: argp, GNU ext
685 argp_usage NEW: argp, GNU ext
686 authdes_create NEW: Secure RPC
687 authdes_getucred NEW: Secure RPC
688 authdes_pk_create NEW: Secure RPC
689 backtrace NEW: GNU ext.
690 backtrace_symbols NEW: GNU ext.
691 backtrace_symbols_fd NEW: GNU ext.
692 cacos NEW: ISO C 9x
693 cacosf NEW: ISO C 9x
694 cacosh NEW: ISO C 9x
695 cacoshf NEW: ISO C 9x
696 cacoshl NEW: ISO C 9x
697 cacosl NEW: ISO C 9x
698 capget NEW: kernel
699 capset NEW: kernel
700 carg NEW: ISO C 9x
701 cargf NEW: ISO C 9x
702 cargl NEW: ISO C 9x
703 casin NEW: ISO C 9x
704 casinf NEW: ISO C 9x
705 casinh NEW: ISO C 9x
706 casinhf NEW: ISO C 9x
707 casinhl NEW: ISO C 9x
708 casinl NEW: ISO C 9x
709 catan NEW: ISO C 9x
710 catanf NEW: ISO C 9x
711 catanh NEW: ISO C 9x
712 catanhf NEW: ISO C 9x
713 catanhl NEW: ISO C 9x
714 catanl NEW: ISO C 9x
715 cbc_crypt NEW: Secure RPC
716 ccos NEW: ISO C 9x
717 ccosf NEW: ISO C 9x
718 ccosh NEW: ISO C 9x
719 ccoshf NEW: ISO C 9x
720 ccoshl NEW: ISO C 9x
721 ccosl NEW: ISO C 9x
722 cexp NEW: ISO C 9x
723 cexpf NEW: ISO C 9x
724 cexpl NEW: ISO C 9x
725 cimag NEW: ISO C 9x
726 cimagf NEW: ISO C 9x
727 cimagl NEW: ISO C 9x
728 clearerr_locked REMOVED
729 clntunix_create NEW: sunrpc ext
730 clog NEW: ISO C 9x
731 clog10 NEW: ISO C 9x
732 clog10f NEW: ISO C 9x
733 clog10l NEW: ISO C 9x
734 clogf NEW: ISO C 9x
735 clogl NEW: ISO C 9x
736 conj NEW: ISO C 9x
737 conjf NEW: ISO C 9x
738 conjl NEW: ISO C 9x
739 cpow NEW: ISO C 9x
740 cpowf NEW: ISO C 9x
741 cpowl NEW: ISO C 9x
742 cproj NEW: ISO C 9x
743 cprojf NEW: ISO C 9x
744 cprojl NEW: ISO C 9x
745 creal NEW: ISO C 9x
746 crealf NEW: ISO C 9x
747 creall NEW: ISO C 9x
748 creat64 NEW: LFS
749 csin NEW: ISO C 9x
750 csinf NEW: ISO C 9x
751 csinh NEW: ISO C 9x
752 csinhf NEW: ISO C 9x
753 csinhl NEW: ISO C 9x
754 csinl NEW: ISO C 9x
755 csqrt NEW: ISO C 9x
756 csqrtf NEW: ISO C 9x
757 csqrtl NEW: ISO C 9x
758 ctan NEW: ISO C 9x
759 ctanf NEW: ISO C 9x
760 ctanh NEW: ISO C 9x
761 ctanhf NEW: ISO C 9x
762 ctanhl NEW: ISO C 9x
763 ctanl NEW: ISO C 9x
764 des_setparity NEW: Secure RPC
765 ecb_crypt NEW: Secure RPC
766 endutxent NEW: Unix98
767 exp10 NEW: ISO C 9x
768 exp10f NEW: ISO C 9x
769 exp10l NEW: ISO C 9x
770 exp2 NEW: ISO C 9x
771 exp2f NEW: ISO C 9x
772 exp2l NEW: ISO C 9x
773 fattach NEW: STREAMS
774 fdetach NEW: STREAMS
775 fdim NEW: ISO C 9x
776 fdimf NEW: ISO C 9x
777 fdiml NEW: ISO C 9x
778 feclearexcept NEW: ISO C 9x
779 fegetenv NEW: ISO C 9x
780 fegetexceptflag NEW: ISO C 9x
781 fegetround NEW: ISO C 9x
782 feholdexcept NEW: ISO C 9x
783 feof_locked REMOVED
784 feraiseexcept NEW: ISO C 9x
785 ferror_locked REMOVED
786 fesetenv NEW: ISO C 9x
787 fesetexceptflag NEW: ISO C 9x
788 fesetround NEW: ISO C 9x
789 fetestexcept NEW: ISO C 9x
790 feupdateenv NEW: ISO C 9x
791 fflush_locked REMOVED
792 ffsl NEW: GNU ext.
793 ffsll NEW: GNU ext.
794 fgetpos64 NEW: LFS
795 fgets_unlocked NEW: GNU ext.
796 fileno_locked REMOVED
797 fma NEW: ISO C 9x
798 fmaf NEW: ISO C 9x
799 fmal NEW: ISO C 9x
800 fmax NEW: ISO C 9x
801 fmaxf NEW: ISO C 9x
802 fmaxl NEW: ISO C 9x
803 fmin NEW: ISO C 9x
804 fminf NEW: ISO C 9x
805 fminl NEW: ISO C 9x
806 fmtmsg NEW: Unix98
807 fopen64 NEW: LFS
808 fputc_locked REMOVED
809 fputs_unlocked NEW: GNU ext.
810 fread_unlocked NEW: GNU ext.
811 freopen64 NEW: LFS
812 fseeko NEW: Unix98
813 fsetpos64 NEW: LFS
814 fstatfs64 NEW: LFS
815 fstatvfs NEW: Unix98
816 fstatvfs64 NEW: LFS
817 ftello NEW: Unix98
818 ftello64 NEW: LFS
819 ftruncate64 NEW: LFS
820 ftw64 NEW: LFS
821 fwrite_unlocked NEW: GNU ext.
822 gai_strerror NEW: IPv6
823 gamma_r REMOVED
824 gammaf_r REMOVED
825 gammal_r REMOVED
826 getchar_locked REMOVED
827 getdate NEW: Unix98
828 getdate_err NEW: Unix98
829 getdate_r NEW: GNU ext.
830 getmsg NEW: STREAMS
831 getnameinfo NEW: IPv6
832 getnetname NEW: Secure RPC
833 getpmsg NEW: STREAMS
834 getpt NEW: Unix98 PTY
835 getrlimit64 NEW: LFS
836 getutxent NEW: Unix98
837 getutxid NEW: Unix98
838 getutxline NEW: Unix98
839 glob64 NEW: GNU ext.
840 globfree64 NEW: GNU ext.
841 gnu_get_libc_release NEW: GNU ext.
842 gnu_get_libc_version NEW: GNU ext.
843 grantpt NEW: Unix98 PTY
844 host2netname NEW: Secure RPC
845 iconv NEW: iconv
846 iconv_close NEW: iconv
847 iconv_open NEW: iconv
848 if_freenameindex NEW: IPv6
849 if_indextoname NEW: IPv6
850 if_nameindex NEW: IPv6
851 if_nametoindex NEW: IPv6
852 in6addr_any NEW: IPv6
853 in6addr_loopback NEW: IPv6
854 inet6_isipv4mapped NEW: IPv6
855 isastream NEW: STREAMS
856 iswblank NEW: GNU ext.
857 key_decryptsession NEW: Secure RPC
858 key_decryptsession_pk NEW: Secure RPC
859 key_encryptsession NEW: Secure RPC
860 key_encryptsession_pk NEW: Secure RPC
861 key_gendes NEW: Secure RPC
862 key_get_conv NEW: Secure RPC
863 key_secretkey_is_set NEW: Secure RPC
864 key_setnet NEW: Secure RPC
865 key_setsecret NEW: Secure RPC
866 llrint NEW: ISO C 9x
867 llrintf NEW: ISO C 9x
868 llrintl NEW: ISO C 9x
869 llround NEW: ISO C 9x
870 llroundf NEW: ISO C 9x
871 llroundl NEW: ISO C 9x
872 log2 NEW: ISO C 9x
873 log2f NEW: ISO C 9x
874 log2l NEW: ISO C 9x
875 lrint NEW: ISO C 9x
876 lrintf NEW: ISO C 9x
877 lrintl NEW: ISO C 9x
878 lround NEW: ISO C 9x
879 lroundf NEW: ISO C 9x
880 lroundl NEW: ISO C 9x
881 lseek64 NEW: LFS
882 makecontext NEW: Unix98
883 mempcpy NEW: GNU ext.
884 mmap64 NEW: LFS
885 moncontrol REMOVED
886 modify_ldt NEW: kernel
887 nan NEW: ISO C 9x
888 nanf NEW: ISO C 9x
889 nanl NEW: ISO C 9x
890 nearbyint NEW: ISO C 9x
891 nearbyintf NEW: ISO C 9x
892 nearbyintl NEW: ISO C 9x
893 netname2host NEW: Secure RPC
894 netname2user NEW: Secure RPC
895 nexttoward NEW: ISO C 9x
896 nexttowardf NEW: ISO C 9x
897 nexttowardl NEW: ISO C 9x
898 nftw NEW: Unix98
899 nftw64 NEW: LFS
900 open64 NEW: LFS
901 passwd2des NEW: Secure RPC
902 pow10 NEW: GNU ext.
903 pow10f NEW: GNU ext.
904 pow10l NEW: GNU ext.
905 pread NEW: Unix98
906 pread64 NEW: LFS
907 printf_size NEW: GNU ext.
908 printf_size_info NEW: GNU ext.
909 profil_counter REMOVED
910 pthread_mutexattr_getkind_np REPLACED
911 pthread_mutexattr_setkind_np REPLACED
912 ptsname NEW: Unix98 PTY
913 ptsname_r NEW: Unix98 PTY
914 putc_locked REMOVED
915 putchar_locked REMOVED
916 putgrent NEW: GNU ext.
917 putmsg NEW: STREAMS
918 putpmsg NEW: STREAMS
919 pututxline NEW: Unix98
920 pwrite NEW: Unix98
921 pwrite64 NEW: LFS
922 readdir64 NEW: LFS
923 readdir64_r NEW: LFS
924 remquo NEW: ISO C 9x
925 remquof NEW: ISO C 9x
926 remquol NEW: ISO C 9x
927 round NEW: ISO C 9x
928 roundf NEW: ISO C 9x
929 roundl NEW: ISO C 9x
930 rtime NEW: GNU ext.
931 scalbln NEW: ISO C 9x
932 scalblnf NEW: ISO C 9x
933 scalblnl NEW: ISO C 9x
934 scandir64 NEW: LFS
935 sendfile NEW: kernel
936 setcontext NEW: Unix98
937 setrlimit64 NEW: LFS
938 setutxent NEW: Unix98
939 sighold NEW: Unix98
940 sigignore NEW: Unix98
941 sigqueue NEW: POSIX.1b
942 sigrelse NEW: Unix98
943 sigset NEW: POSIX.1b
944 sigtimedwait NEW: POSIX.1b
945 sigwaitinfo NEW: POSIX.1b
946 sincos NEW: GNU ext.
947 sincosf NEW: GNU ext.
948 sincosl NEW: GNU ext.
949 statfs64 NEW: LFS
950 statvfs NEW: Unix98
951 statvfs64 NEW: LFS
952 strcasestr NEW: GNU ext.
953 strtoimax NEW: ISO C 9x
954 strtoumax NEW: ISO C 9x
955 strverscmp NEW: GNU ext.
956 svcauthdes_stats NEW: Secure RPC
957 svcunix_create NEW: sunrpc etx
958 svcunixfd_create NEW: sunrpc ext
959 swapcontext NEW: Unix98
960 tcgetsid NEW: Unix98 PTY
961 tdestroy NEW: GNU ext.
962 tgamma NEW: ISO C 9x
963 tgammaf NEW: ISO C 9x
964 tgammal NEW: ISO C 9x
965 tmpfile64 NEW: LFS
966 trunc NEW: ISO C 9x
967 truncate64 NEW: LFS
968 truncf NEW: ISO C 9x
969 truncl NEW: ISO C 9x
970 umount2 NEW: kernel
971 unlockpt NEW: Unix98 PTY
972 updwtmpx NEW: Unix98
973 user2netname NEW: Secure RPC
974 utmpxname NEW: Unix98
975 versionsort NEW: GNU ext.
976 versionsort64 NEW: GNU ext.
977 waitid NEW: Unix98
978 wcscasecmp NEW: GNU ext.
979 wcsncasecmp NEW: GNU ext.
980 wcsnlen NEW: GNU ext.
981 wcstoimax NEW: ISO C 9x
982 wcstoll NEW: ISO C 9x
983 wcstoull NEW: ISO C 9x
984 wcstoumax NEW: ISO C 9x
985 wcswcs NEW: Unix98
986 wordexp NEW: POSIX.2
987 wordfree NEW: POSIX.2
988 write_profiling REMOVED
989 xdecrypt NEW: Secure RPC
990 xdr_authdes_cred NEW: Secure RPC
991 xdr_authdes_verf NEW: Secure RPC
992 xdr_cryptkeyarg NEW: Secure RPC
993 xdr_cryptkeyarg2 NEW: Secure RPC
994 xdr_cryptkeyres NEW: Secure RPC
995 xdr_getcredres NEW: Secure RPC
996 xdr_key_netstarg NEW: Secure RPC
997 xdr_key_netstres NEW: Secure RPC
998 xdr_keybuf NEW: Secure RPC
999 xdr_keystatus NEW: Secure RPC
1000 xdr_netnamestr NEW: Secure RPC
1001 xdr_sizeof NEW: Secure RPC
1002 xdr_unixcred NEW: sunrpc ext
1003 xencrypt NEW: Secure RPC
1004 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1005 \f
1006 Version 2.0.6
1008 * more bug fixes
1010 \f
1011 Version 2.0.5
1013 * more bug fixes
1015 * inet_ntoa is thread-safe
1017 * updwtmp is moved from libutil to libc
1019 * rewrite of cbrt function
1021 * update of timezone data
1022 \f
1023 Version 2.0.4
1025 * more bug fixes
1026 \f
1027 Version 2.0.3
1029 * more bug fixes
1030 \f
1031 Version 2.0.2
1033 * more bug fixes
1035 * add atoll function
1037 * fix complex problems in Berkeley DB code
1039 * fix math functions
1040 \f
1041 Version 2.0.1
1043 * fixed lots of header problems (especially Linux/GNU specific)
1045 * dynamic loader preserves all registers
1047 * Roland McGrath provided support for handling of auxiliary objects in
1048 the ELF dynamic loader.
1050 * support for parallel builds is improved
1051 \f
1052 Version 2.0
1054 * GNU extensions are no longer declared by default. To enable them you
1055 must define the macro `_GNU_SOURCE' in your program or compile with
1056 `-D_GNU_SOURCE'.
1058 * The library has changed from using GNU ld symbol aliases to using weak
1059 symbols where available. The ELF object file format supports weak
1060 symbols; GNU ld also supports weak symbols in the a.out format. (There
1061 is also now support for other GNU ld extensions in ELF. Use the
1062 `--with-elf' option to configure to indicate you have ELF, and
1063 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1064 of many files which contained only symbol aliases, reducing the size of
1065 the source and the compiled library; many other files were renamed to
1066 less cryptic names previously occupied by the symbol alias files.
1067 There is a new header file <elf.h> for programs which operate on
1068 files in the ELF format.
1070 * Converted to Autoconf version 2, so `configure' has more options.
1071 Run `configure --help' to see the details.
1073 * The library can now be configured to build profiling, highly-optimized
1074 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1075 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1076 `configure' enable building these extra libraries. The shared library is
1077 built by default when using both ELF and GNU ld. When shared libraries
1078 are enabled, the new library `-ldl' is available for arbitrary run-time
1079 loading of shared objects; its interface is defined in <dlfcn.h>. The
1080 new header file <link.h> gives access to the internals of the run-time
1081 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1082 application of same name on other systems and it provides information
1083 about dynamically linked binaries.
1085 * The C library now provides the run-time support code for profiling
1086 executables compiled with `-pg'. Programs can control the profiling code
1087 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1088 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1089 the support for this file format was contributed by David Mosberger-Tang.
1091 * The math code has been replaced with a math library based on fdlibm from
1092 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1093 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1094 functions. The math functions now reside in a separate library, so
1095 programs using them will need to use `-lm' their linking commands.
1097 * John C. Bowman contributed optimized ix87 assembler inline functions.
1099 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1100 mechanism similar to that found in Solaris 2. This is now used for the
1101 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1102 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1103 file controls what services are used for each individual database. This
1104 works by loading shared libraries with names specified in `nsswitch.conf',
1105 so service modules can be changed or added at any time without even
1106 relinking any program. Currently there are the file, db, and NIS based
1107 NSS services available.
1109 * The new functions `strtoq' and `strtouq' parse integer values from
1110 strings, like `strtol' and `strtoul', but they return `long long int' and
1111 `unsigned long long int' values, respectively (64-bit quantities).
1113 * The new functions `strtof' and `strtold' parse floating-point values from
1114 strings, like `strtod', but they return `float' and `long double' values,
1115 respectively (on some machines `double' and `long double' are the same).
1117 * Ulrich Drepper has contributed new implementations of the floating-point
1118 printing and reading code used in the `printf' family of functions and
1119 `strtod', `strtof', and `strtold'. These new functions are perfectly
1120 accurate, and much faster than the old ones.
1122 * The implementation of the POSIX locale model was completely rewritten by
1123 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1124 to compile the POSIX locale definition.
1126 * The former dummy implementations of the strcoll and strxfrm function are
1127 now replaced by fully functional code contributed by Ulrich Drepper. The
1128 collation information comes from the POSIX locale definitions.
1130 * The new header <langinfo.h> defines an interface for accessing
1131 various locale-dependent data (using the locale chosen with `setlocale').
1133 * Ulrich Drepper has contributed a new suite of functions for operation on
1134 wide-character and multibyte-character strings, in <wchar.h>;
1135 and classification and case conversion of wide characters, in <wctype.h>.
1136 These new functions are conforming to the ISO C, Amendement 1 specification.
1138 * There is now a second implementation of the standard I/O library available.
1139 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1140 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1142 * You can now use positional parameter specifications in format strings
1143 for the `printf' and `scanf' families of functions. For example,
1144 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1145 ``Number 6, Mr Jones''. This is mainly useful when providing different
1146 format strings for different languages, whose grammars may dictate
1147 different orderings of the values being printed. To support this
1148 feature, the interface for `register_printf_handler' has changed; see
1149 the header file <printf.h> for details.
1151 * The `printf' and `scanf' families of functions now understand a new
1152 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1153 to group numbers as indicated by the locale; for `scanf' and friends, this
1154 says to accept as valid only a number with all the proper grouping
1155 separators in the right places. In the default "C" locale, numbers are
1156 not grouped; but locales for specific countries will define the usual
1157 conventions (i.e. separate thousands with `,' in the US locale).
1159 * The pgrp functions have been regularized, slightly incompatibly but much
1160 less confusingly. The core functions are now `getpgid' and `setpgid',
1161 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1162 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1163 provided for compatibility. There is no longer an incompatible `getpgrp'
1164 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1166 * The new header file <fts.h> and suite of functions simplify programs that
1167 operate on directory trees. This code comes from 4.4 BSD.
1169 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1170 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1171 NSS scheme used in glibc.
1173 * There is a new malloc debugging hook `__memalign_hook'.
1175 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1176 `unsigned int' in <sys/types.h>. These are for compatibility only and
1177 their use is discouraged.
1179 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1180 done differently, so that it works even without GNU ld.
1182 * New function `euidaccess' checks allowed access to a file like `access',
1183 but using the effective IDs instead of the real IDs.
1185 * The time zone data files have been updated for the latest and greatest
1186 local time conventions of the countries of the world.
1188 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1189 see <dirent.h>.
1191 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1192 for formatting floating-point numbers. They are provided only for
1193 compatibility; new programs should use `sprintf' instead. There are
1194 also equivalent function for the `long double' floating-point type and
1195 all functions also exist in a reentrant form.
1197 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1198 functions for maintaining the login-record files (primarily of use to
1199 system programs such as `login'), and convenient functions for
1200 allocating and initializing a pseudo-terminal (pty) device.
1202 * Ulrich Drepper has contributed new support for System V style
1203 shared memory and IPC on systems that support it.
1205 * Ulrich Drepper has contributed several miscellaneous new functions found
1206 in System V: The `hsearch' family of functions provide an effective
1207 implementation of hash tables; `a64l' and `l64a' provide a very simple
1208 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1209 number generator.
1211 * Ulrich Drepper has contributed new reentrant counterparts for the
1212 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1214 * Ulrich Drepper has contributed new, highly-optimized versions of several
1215 string functions for the i486/Pentium family of processors.
1217 * Ulrich Drepper has updated the Linux-specific code, based largely
1218 on work done in Hongjiu Lu's version of GNU libc for Linux.
1219 The GNU library now supports Linux versions 2.0.10 and later,
1220 using the ELF object file format (i[3456]86-*-linux).
1222 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1224 * David Mosberger-Tang and Richard Henderson have ported the C library
1225 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1226 dynamic linking support for ELF/Alpha.
1228 * Richard Henderson contributed several Alpha optimized assembler function
1229 for arithmetic and string handling.
1231 * Ulrich Drepper has contributed a new set of message catalog functions to
1232 support multiple languages using the <libintl.h> interface, for use with
1233 his new package GNU gettext. Translation volunteers have contributed
1234 catalogs of the library's messages in Spanish, German, and Korean.
1236 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1237 program and the `catgets' function for reading the catalog files it
1238 creates. (The <libintl.h> interface is preferred; we include the
1239 <nl_types.h> interface using `catgets' only for source compatibility with
1240 programs already written to use it.)
1242 * New header file <values.h> gives SVID-compatible names for <limits.h>
1243 constants.
1245 * Various new macros, declarations, and small header files for compatibility
1246 with 4.4 BSD.
1248 * New function `group_member' is a convenient way to check if a process has
1249 a given effective group ID.
1251 * When using GCC 2.7 and later, the socket functions are now declared in a
1252 special way so that passing an argument of type `struct sockaddr_in *',
1253 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1254 `struct sockaddr *' type, does not generate a type-clash warning.
1256 * New function `error' declared in header file <error.h> is a convenient
1257 function for printing error messages and optionally exiting; this is the
1258 canonical function used in GNU programs. The new functions `err', `warn',
1259 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1260 doing the same thing.
1262 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1263 POSIX.2 `glob' function to do ~ and {...} expansion.
1265 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1266 `clearenv' which is used in POSIX.9 is also available.
1268 * New function `getsid' returns session ID number on systems that support it.
1270 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1271 files <db.h> and <mpool.h> provide a rich set of functions for several
1272 types of simple databases stored in memory and in files, and <ndbm.h> is
1273 an old `ndbm'-compatible interface using the `db' functions. Link with
1274 `-ldb' to get these functions.
1276 * New macro `strdupa' copies a string like `strdup', but uses local stack
1277 space from `alloca' instead of dynamic heap space from `malloc'.
1279 * New function `strnlen' is like `strlen' but searches only a given maximum
1280 number of characters for the null terminator. `stpncpy', `strndup' and
1281 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1282 function.
1284 * New function `statfs' in header <sys/statfs.h>.
1286 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1287 provide convenient functions for operating on blocks of null-terminated
1288 strings.
1290 * A new suite of functions in <utmp.h> handle all the details of reading
1291 and writing the utmp file.
1293 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1294 Thorsten Kukuk.
1296 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1297 completely POSIX compliant and also implemented the extended functionality
1298 to handle alternate digit representation and alternate era date formats.
1300 * Ulrich Drepper provided an implementation of the `strptime' function
1301 defined in XPG4.2 which transforms a string into a `struct tm' value.
1303 * Paul Eggert provided the tzselect shell script as part of the timezone
1304 code. The shell script makes it easy to select the correct timezone
1305 specification.
1307 * The implementation of the malloc family of functions is completely replaced
1308 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1309 The implementation uses the mmap function (if available) and it is
1310 optimized for the use in multi threaded programs.
1312 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1313 functions. This new functionality is usable by specifying a special
1314 salt string and it is compatible with implementation on *BSD systems.
1316 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1317 `getsubopt' to handle second level command line options, `bsd_signal'
1318 to access BSD style `signal' functionality, the obsolete `regexp' style
1319 expression matcher.
1321 * the `lchown' function is available on system which support this
1322 functionality.
1324 * The implementation of the shadow password handling function was contributed
1325 by Ulrich Drepper.
1327 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1329 * POSIX.1g support was added. The <sys/select.h> header is available,
1330 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1331 implementation of `getaddrinfo'.
1332 \f
1333 Version 1.09
1335 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1337 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1338 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1340 * The new function `daemon' from 4.4 BSD is useful for server programs that
1341 want to put themselves in the background.
1343 * Joel Sherrill has contributed support for several standalone boards that
1344 run without an operating system.
1346 * `printf', `scanf' and friends now accept a `q' type modifier for long
1347 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1349 * All of the code taken from BSD (notably most of the math and networking
1350 routines) has been updated from the BSD 4.4-Lite release.
1352 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1354 * The new functions `getdomainname' and `setdomainname' fetch or change the
1355 YP/NIS domain name. These are system calls which exist on systems which
1356 have YP (aka NIS).
1358 * The time zone data files have been updated for the latest international
1359 conventions.
1361 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1362 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1363 \f
1364 Version 1.08
1366 * The C library now includes support for Sun RPC, from Sun's free
1367 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1368 are included. (There is still no support for YP.)
1370 * Tom Quinn has contributed a port of the C library to SGI machines running
1371 Irix 4 (mips-sgi-irix4).
1373 * The new `lockf' function is a simplified interface to the locking
1374 facilities of `fcntl', included for compatibility.
1376 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1378 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1380 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1381 compatibility.
1383 * The error message printed by `assert' for a failed assertion now includes
1384 the name of the program (if using GNU ld) and the name of the calling
1385 function (with versions of GCC that support this).
1387 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1389 * The library now includes the <sys/mman.h> header file and memory
1390 management functions `mmap', `munmap', `mprotect', `msync', and
1391 `madvise', on systems that support those facilities.
1393 * The interface for `mcheck' has changed slightly: the function called to
1394 abort the program when an allocation inconsistency is detected now takes
1395 an argument that indicates the type of failure. The new function
1396 `mprobe' lets you request a consistency check for a particular block at
1397 any time (checks are normally done only when you call `free' or `realloc'
1398 on a block).
1400 * It is now possible to easily cross-compile the C library, building on one
1401 system a library to run on another machine and/or operating system. All
1402 you need to do is set the variable `HOST_CC' in `configparms' to the
1403 native compiler for programs to run on the machine you are building on (a
1404 few generator programs are used on Unix systems); set `CC' to the
1405 cross-compiler.
1407 * The new function `fexecve' (only implemented on the GNU system) executes
1408 a program file given a file descriptor already open on the file.
1409 \f
1410 Version 1.07
1412 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1413 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1415 * You can set the variable `libprefix' in `configparms' to specify a prefix
1416 to be prepended to installed library files; this makes it easy to install
1417 the GNU C library to be linked as `-lgnuc' or whatever.
1419 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1420 copies a limited number of characters from a string, and returns the
1421 address of the last character written.
1423 * You no longer need to check for whether the installed `stddef.h' is
1424 compatible with the GNU C library. configure now checks for you.
1426 * You can now define a per-stream `fileno' function to convert the
1427 stream's cookie into an integral file descriptor.
1429 * ``malloc (0)'' no longer returns a null pointer. Instead, it
1430 allocates zero bytes of storage, and returns a unique pointer which
1431 you can pass to `realloc' or `free'. The behavior is undefined if
1432 you dereference this pointer.
1434 * The C library now runs on Sony NEWS m68k machines running either
1435 NewsOS 3 or NewsOS 4.
1437 * The new `syscall' function is a system-dependent primitive function
1438 for invoking system calls. It has the canonical behavior on Unix
1439 systems, including unreliable return values for some calls (such as
1440 `pipe', `fork' and `getppid').
1442 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
1443 to `EAGAIN', which is the preferred name. On systems whose kernels
1444 use two distinct codes, the C library now translates EWOULDBLOCK to
1445 EAGAIN in every system call function.
1446 \f
1447 Version 1.06
1449 * The GNU C Library Reference Manual is now distributed with the library.
1450 `make dvi' will produce a DVI file of the printed manual.
1451 `make info' will produce Info files that you can read on line using C-h i
1452 in Emacs or the `info' program.
1453 Please send comments on the manual to bug-glibc-manual@gnu.org.
1455 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
1457 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
1459 * Jason Merrill has contributed a port to the Sequent Symmetry running
1460 Dynix version 3 (i386-sequent-dynix).
1462 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
1463 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
1465 * New function `memory_warnings' lets you arrange to get warnings when
1466 malloc is running out of memory to allocate, like Emacs gives you.
1468 * The C library now contains the relocating allocator used in Emacs 19 for
1469 its editing buffers. This allocator (ralloc) minimizes allocation
1470 overhead and fragmentation by moving allocated regions around whenever it
1471 needs to. You always refer to a ralloc'd region with a "handle" (a
1472 pointer to a pointer--an object of type `void **').
1474 * There is a new `printf' format: `%m' gives you the string corresponding
1475 to the error code in `errno'.
1477 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
1478 or `%[' conversion, but instead of filling in a fixed-sized buffer you
1479 pass, the `a' modifier says to fill in a `char **' you pass with a
1480 malloc'd string.
1482 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
1483 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
1484 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
1486 * `mkstemp' is a traditional Unix function to atomically create and open a
1487 uniquely-named temporary file.
1488 \f
1489 Version 1.05
1491 * The standard location for the file that says what the local timezone is
1492 has changed again. It is now `/usr/local/etc/localtime' (or more
1493 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
1495 * The distribution no longer contains any files with names longer than 14
1496 characters.
1498 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
1499 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
1501 * New functions `ttyslot' and `syslog' from 4.4 BSD.
1502 \f
1503 Version 1.04
1505 * The configuration process has changed quite a bit. The `configure'
1506 script is now used just like the configuration scripts for other GNU
1507 packages. The `sysdeps' directory hierarchy is much rearranged.
1508 The file `INSTALL' explains the new scheme in detail.
1510 * The header files no longer need to be processed into ANSI C and
1511 traditional C versions. There is just one set of files to install, and
1512 it will work with ANSI or old C compilers (including `gcc -traditional').
1514 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
1515 MIPS DECStation running Ultrix 4.
1517 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
1518 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
1519 made itself into a shared library.
1521 * Yet further improved support for the i386, running 4.3 BSD-like systems
1522 (such as Mach 3 with the Unix single-server), or System V.
1524 * New function `strncasecmp' to do case-insensitive string comparison
1525 with limited length.
1527 * New function `strsep' is a reentrant alternative to `strtok'.
1529 * New functions `scandir' and `alphasort' for searching directories.
1531 * New function `setenv' is a better interface to `putenv'.
1533 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
1534 function for traversing a directory tree.
1536 * The GNU obstack package is now also part of the C library.
1537 The new function `open_obstack_stream' creates a stdio stream that
1538 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
1539 formatted output directly to an obstack.
1541 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
1542 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
1544 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
1546 * The new functions `strfry' and `memfrob' do mysterious and wonderful
1547 things to your strings.
1549 * There are some new test programs: test-fseek, testmb, and testrand.
1551 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
1552 These ports are not finished, but are a good starting place for really
1553 supporting those systems.
1555 * `/etc/localtime' is now the standard location for the file that says what
1556 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
1557 This follows the general principle that `/etc' is the place for all local
1558 configuration files.
1560 * The C library header files now use `extern "C"' when used by the C++
1561 compiler, so the C library should now work with C++ code.
1563 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
1564 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
1565 in <strings.h>.)
1567 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
1568 function which uses the `merge sort' algorithm, and is said to be
1569 significantly faster than the old GNU `qsort' function. Merge sort is
1570 now the standard `qsort' function. The new algorithm can require a lot
1571 of temporary storage; so, the old sorting function is called when the
1572 required storage is not available.
1574 * The C library now includes Michael Glad's Ultra Fast Crypt, which
1575 provides the Unix `crypt' function, plus some other entry points.
1577 * The code and header files taken from 4.4 BSD have been updated with the
1578 latest files released from Berkeley.
1579 \f
1580 ----------------------------------------------------------------------
1581 Copyright information:
1583 Copyright (C) 1992-1999,2000,2001,2002,2003,2004,2005,2006
1584 Free Software Foundation, Inc.
1586 Permission is granted to anyone to make or distribute verbatim copies
1587 of this document as received, in any medium, provided that the
1588 copyright notice and this permission notice are preserved,
1589 thus giving the recipient permission to redistribute in turn.
1591 Permission is granted to distribute modified versions
1592 of this document, or of portions of it,
1593 under the above conditions, provided also that they
1594 carry prominent notices stating who last changed them.
1595 \f
1596 Local variables:
1597 version-control: never
1598 End: