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1 GNU C Library NEWS -- history of user-visible changes. 2006-07-28
2 Copyright (C) 1992-2002,2003,2004,2005,2006 Free Software Foundation, Inc.
3 See the end for copying conditions.
5 Please send GNU C library bug reports via <http://sources.redhat.com/bugzilla/>
6 using `glibc' in the "product" field.
7 \f
8 Version 2.5
10 * For Linux, the sorting of addresses returned by getaddrinfo now also
11 handles rules 3 and 7 from RFC 3484. Implemented by Ulrich Drepper.
13 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
14 Implemented by Ulrich Drepper.
16 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
18 * New iconv module for MIK. Contributed by Alexander Shopov.
20 * For sites with broken group and/or passwd database, the auto-propagate
21 option of nscd can prevent creating ID lookup entries from the results
22 of a name lookup and vice versa. This usually is no problem but some
23 site might have problems with default behavior.
24 Implemented by Ulrich Drepper.
26 * Iterating over entire database in NIS can be slow. With the
27 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
28 to trade time for memory. The entire database will be read at once.
29 Implemented by Ulrich Drepper.
31 * The interfaces introduced in RFC 3542 have been implemented by
32 Ulrich Drepper.
34 * Support for the new ELF hash table format was added by Ulrich Drepper.
36 * Support for priority inheritance mutexes added by Jakub Jelinek and
37 Ulrich Drepper.
39 \f
40 Version 2.4
42 * More overflow detection functions.
44 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
45 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
47 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
48 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
49 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
50 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
51 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
52 by Masahide Washizawa.
54 * It is now possible to install audit libraries for the dynamic linker using
55 LD_AUDIT. Implemented by Ulrich Drepper.
57 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
58 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
59 For a libc and libpthread that works well on Linux 2.4 kernels, we
60 recommend using the stable 2.3 branch.
62 * The new function open_wmemstream acts like open_memstream,
63 but uses a wchar_t wide character buffer.
65 * The new function ppoll is an improved version of poll, similar to pselect.
67 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
68 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
69 renameat, unlinkat, linkat, symlinkat, readlinkat.
71 * New Linux kernel system calls: unshare,
72 inotify_init, inotify_add_watch, inotify_rm_watch.
74 * The euidaccess function is now also known by the alias eaccess,
75 for compatibility with some other systems.
77 * Timezone data updated to 2006b version.
78 \f
79 Version 2.3.6
81 * The following bugs are resolved with this release:
83 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
84 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
85 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
86 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
87 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
88 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
90 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
92 * As of this release, GCC 4 can be used to compile the C Library.
94 * Timezone data updated to 2005m version.
95 \f
96 Version 2.3.5
98 * The following bugs are resolved with this release:
100 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
101 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
102 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
103 777, 787, 821, 822, 823, 825
105 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
106 \f
107 Version 2.3.4
109 * Support for RFC 3678. Real implementations exist only for Linux so far.
110 Implemented by Ulrich Drepper.
112 * nscd can now cache entries persistently. Expiring entries are reloaded.
113 For speedups the cache can be shared in memory with client processes.
114 Implemented by Ulrich Drepper.
116 * nscd can now perform SELinux checks.
117 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
119 * getaddrinfo queries are now cached. Canonical name lookup is performed
120 efficiently.
121 Implemented by Ulrich Drepper.
123 * The nothrow function attribute is used when headers are used by gcc when
124 compiling C code. This can avoid significant amounts of exception
125 handling data.
127 * The malloc functions perform more error checking and are stricter when
128 it comes to reacting on errors. The default action is to terminate
129 the process after showing an error message. Implemented by Ulrich Drepper.
131 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
132 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
134 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
135 namespaces using the new function dlmopen(). This feature is of course,
136 like most other dynamic loading functionality, not available in statically
137 linked applications. Implemented by Ulrich Drepper.
139 * Low-overhead boundary checking variants of string and some stdio functions
140 were added. These are to be used in conjunction with a gcc patch by
141 Jakub Jelinek which adds calls to these functions if possible.
142 Implemented by Jakub Jelinek and Ulrich Drepper.
144 * Old code for several operating systems and machine architectures that
145 have not been in working condition in a long time have been removed from
146 the main source tree maintained by the GNU C Library's maintainers.
147 These files are now reside in the separate `ports' source module
148 that is usable as an add-on when building the library.
149 \f
150 Version 2.3.3
152 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
153 interrogate the dynamic linker, compatible with the Solaris interface.
155 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
156 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
158 * getifaddrs now uses the netlink interface on Linux to get its information.
159 Implemented by Thorsten Kukuk.
161 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
162 Implemented by Ulrich Drepper.
164 * support for non-executable stacks on x86 has been added. Changes mostly
165 by Roland McGrath.
167 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
168 and Ulrich Drepper.
170 * getaddrinfo now performs destination address selection according to
171 RFC 3484.
172 \f
173 Version 2.3.2
175 * Thread-safe interfaces for many functions that access locale data
176 were added in version 2.3, but these features were omitted from NEWS.
177 Many functions have variants with an `_l' suffix that take a `locale_t'
178 object as a parameter rather than consulting the current locale.
179 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
180 create and maintain `locale_t' objects. Additionally, the new function
181 `uselocale' sets "the current locale" (as used by functions not so
182 parameterized) set for an individual thread. These features were added
183 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
185 * The functions getresuid, getresgid, setresuid, and setresgid, which
186 have long been available on Linux, are now declared in <unistd.h>
187 and are now also available on the Hurd.
189 * ELF thread-local storage support (TLS) now works on x86-64.
191 * The new dynamic string token $LIB is expanded in shared library names.
192 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
194 * Aldy Hernandez contributed complete software floating point support for
195 PowerPC machines with no FPU.
197 * fexecve is implemented on Linux.
199 * The `btowc' function should work at least twice as fast due to
200 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
202 * With approriate thread add-ons cancelable functions are now implemented
203 in libc.so as well. No need to call the function in libpthread. This
204 change allowed to finally disable the incorrect and expensive handling
205 of weak definition in ld.so.
207 * Yet more PLT entries in libc.so have been removed. We finally arrived
208 at the bare minimum. Startup times improved appropriately.
210 * Support for the new Linux/x86 system call interface was added. The
211 AT_SYSINFO auxiliary vector entry is recognized and handled.
212 \f
213 Version 2.3
215 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
216 charsets.
218 * iconv (the program and the interface) now accepts empty names (excluding
219 options like //TRANSLIT) to mean "use charset of current locale".
221 * localedef can now transliterate characters in strings which are not in
222 the provided charmap. The information from the input locale is used.
224 * Prelinking support was added for ELF targets. This requires additional
225 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
227 * Read-only stdio streams now use mmap to speed up operation by eliminating
228 copying and buffer underflows. To use add 'm' to the mode string of
229 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
231 * The malloc functions were completely rewritten by Wolfram Gloger based
232 on Doug Lea's malloc-2.7.0.c.
234 * Isamu Hasegawa contributed a completely new and POSIX-conformant
235 implementation of regex.
237 * Bruno Haible upgraded the iconv and locale implementation to support
238 Unicode 3.2.
240 * Contents of the LC_* and LANG environment variables in the CEN style are
241 not recognized anymore. It never was used. Change by Ulrich Drepper.
243 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
244 thread-local storage (TLS) ABI on some platforms.
245 Changes by Ulrich Drepper. SH support by Kaz Kojima.
247 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
248 EUC-JISX0213, and TSCII.
250 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
251 BSD-compatible interface for getting all network interface addresses.
252 Implementation for IPv4 by Roland McGrath.
254 * Loading of locale data is faster due to the introduction of a locale
255 archive. Implemented by Roland McGrath and Ulrich Drepper.
257 * Startup times are significantly reduced by not using exported functions
258 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
259 and Ulrich Drepper.
261 * Steven Munroe contributed a port to PowerPC64/Linux.
262 \f
263 Version 2.2.6
265 * The Hurd now uses the GNU libio implementation of stdio rather than the
266 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
268 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
269 with the same behavior as the Linux system call of the same name.
270 \f
271 Version 2.2.5
273 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
274 128-bit long double format.
276 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
277 IBM1161, and IBM1162 charsets.
279 * Andreas Jaeger contributed a port to x86-64/Linux.
281 * Peter Bruin contributed a port to PowerPC/Hurd.
283 * libc functions using I/O streams now can handle wide-oriented streams
284 as well.
286 * optimizations in the dynamic linker. Binaries created by recent binutils
287 versions start up quicker due to reduced time spent on relocations.
289 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
290 \f
291 Version 2.2.4
293 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
294 asinh, atanh, j0 for the 128-bit long double format.
296 * Bruno Haible updated all the code handling Unicode in some form to
297 support Unicode 3.1.
299 * Speed of regex for single-byte locales is back to previous levels.
300 Patch by Isamu Hasegawa.
302 * Alpha, SPARC, and IA-64 now also using floating stacks.
304 * Startup time of internationalized applications greatly improved through
305 iconv cache. Use iconvconfig to generate the cache file.
306 Contributed by Ulrich Drepper.
308 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
309 severe performance problems. Patch by David Mosberger.
311 * The Hurd port got a lot more functionality like AIO, various stdio
312 extensions, etc. Mainly done by Roland McGrath.
314 * mtrace can now lookup symbols in shared libraries.
315 \f
316 Version 2.2.3
318 * Intel's IA-64 math library is largely integrated. It provides fast and
319 accurate implementatations for most basic and standard math functions
320 in float, double, and long double format.
322 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
323 and asin for the 96-bit long double format and asin, log, tan for the
324 128-bit long double format.
326 * The beginning of a last-bit accurate math library by IBM Haifa were added.
327 The basic double functions exist today. Contributed by Abraham Ziv
328 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
329 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
331 * An asynchronous name lookup library was added. The interface is designed
332 after POSIX AIO. The proposal was circulated beforehand to get comments.
333 No negative ones came in. Implemented by Ulrich Drepper.
335 * Port to S390/64bit contributed by Martin Schwidefsky
336 <schwidefsky@de.ibm.com>.
338 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
339 of functions for Linux/IA-64.
341 * The RPC code is now thread safe. Threads can now use the same service
342 of different services at the same time. Patch by Eric Norum
343 <eric.norum@usask.ca> with some help by Ulrich Drepper.
345 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
346 family of functions for Linux/S390.
348 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
349 of functions for Linux/x86.
351 * Port to Linux/CRIS contributed by Axis Communications.
352 \f
353 Version 2.2.2
355 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
356 we can now check for namespace violations and missing declarations. The
357 result is that almost all headers are now Unix-compliant (as defined in
358 the upcoming XPG6). The negative side is that some programs might need
359 corrections, too, if they depend on the incorrect form of the headers in
360 previous versions which defined too many symbols and included too many
361 other headers.
363 * regex now handles multibyte character sets correctly.
364 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
366 * iconv (the program) does now conform to the upcoming XPG6 and handles
367 charmaps. Instead of the charset names the path of charmaps can be
368 provided and the conversion happens based on this data.
369 Contributed by Ulrich Drepper.
371 * The locale program now provides detailed information about the installed
372 locales. While
374 locale -a
376 only lists the names of the supported locales
378 locale -a --verbose
380 provides details such as country, language, and codeset name.
381 Contributed by Ulrich Drepper.
382 \f
383 Version 2.2.1
385 * The gencat program now parses the input file according to the charset
386 selected by the LC_CTYPE category. This is important for stateful
387 character sets. To make generating catalogs easier there is a way
388 to overwrite the charset selected by the locale: before the first
389 message or $ quote line the catalog can contain a line like
391 $ codeset=ISO-8859-2
393 to select the charset (ISO-8859-2 in this case).
395 Implemented by Shinya Hanataka and Ulrich Drepper.
397 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
398 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
399 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
401 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
402 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
404 * The LANGUAGE environment variable is now ignored unless the locale is
405 changed from the default "C" locale.
407 * The usual bug fixes.
408 \f
409 Version 2.2
411 * Greg McGary added runtime support for bounds checking using gcc's
412 new -fbounded-pointers option. ix86 target is complete. PowerPC
413 is in progress.
415 * Thorsten Kukuk added secure mode support to nscd.
417 * The Berkeley db libraries have been removed.
419 Related, the nss_db module is now in a separate package since it
420 obviously requires a database library being available.
422 * Wide character I/O streams implemented by Ulrich Drepper.
424 * Functions from the extended socket API added by Ulrich Drepper.
426 * Functions feenableexcept and fedisableexcept to control the
427 behaviour of individual exceptions have been added by Andreas Jaeger.
429 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
431 * The resolver code has been updated from bind 8.2.3-T5B which supports
432 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
433 and Mark Kettenis.
435 This change could in some situations effect backward compatibility. Since
436 now `_res' is a thread-local instead of a global variable, modifying it
437 in one thread does not have any effect in other threads.
439 The resolver library was also extended to allow IPv6 as the transport
440 protocol for the requests. This work was done by Stig Venaas.
442 * Compatibility code for K&R C compilers has been removed from the
443 header files. A ISO C compiler is needed to use the library
444 (conforming to either C89 or C99 standard).
446 * Complete rewrite of the localedef program to support multibyte character
447 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
448 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
449 Implemented by Ulrich Drepper.
451 Bruno Haible significantly improved the generation and use of the data
452 structures for the wide character tables.
454 * Plural handling in gettext implemented by Ulrich Drepper.
456 * The utmp daemon has been removed.
458 * The port to MIPS-Linux has been finished by Andreas Jaeger.
460 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
461 and Yutaka Niibe.
463 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
465 * POSIX barriers implemented by Kaz Kylheku.
467 * POSIX spawn function family implemented by Ulrich Drepper.
469 * POSIX spinlocks are now available.
471 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
473 * the configure option --enable-kernel=X.Y.Z allows to strip out
474 compatibility for kernel versions before X.Y.Z. This is currently only
475 implemented for Linux.
477 * the sockaddr_in6 structure changed. The IPv6 working group added a new
478 field sin6_scope_id. This means that all programs using IPv6 should be
479 recompiled. Don't expect binary compatibility with previous glibc
480 versions.
482 * various conversion modules for IBM character sets contributed by
483 Masahide Washizawa.
485 * IA-64 port by Jes Sorensen and HJ Lu.
487 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
488 Compiling the GNU C Library for Linux/ia64
489 ******************************************
491 Please refer to the file INSTALL in the same directory as you found
492 this file for general information about configuring and compiling
493 glibc.
495 For general inquiries about glibc under Linux/ia64 please use the
496 following mailing list linux-ia64@linuxia64.org or one of the relevant
497 glibc mailing lists.
499 Recommended Tools for Compilation
500 =================================
502 In order for glibc-2.2 to build correctly on the ia64 you need at
503 least the following versions of the GNU tools (the :
505 * The Cygnus toolchain snapshot for the ia64 as of August 4
506 including the provided set of patches. It is however recommend
507 you use the October 24 toolchain snapshot or a more recent version.
509 OR alternatively you can try the following (the Cygnus toolchain is
510 the recommended solution):
512 * GCC and binutils, GAS and GNU LD out of CVS from
513 sources.redhat.com as of August 28, 2000 or later. The CVS tree
514 may require special patches to work properly on the ia64.
516 Configuring and compiling GNU Libc for Linux/ia64
517 =================================================
519 The library requires Linux kernel version 2.4.0-test4-000728 or
520 later to funtion properly. Besides that it support for debug libraries
521 is currently untested. Hence the following options
522 are required for configuring the library:
524 --disable-debug --enable-kernel=2.4.0
526 It is also important that you make sure the library picks up the
527 appropriate kernel header files, if you do not have recent enough
528 kernel headers in /usr/src/linux/include, you should use the
529 --with-headers=<path> option to specify the location.
531 As an example I personally use the following options to configure
532 the library:
534 --disable-debug
535 --disable-cvs
536 --enable-kernel=2.4.0
537 --host=ia64-linux
538 --enable-add-ons=yes
539 --prefix=/usr
540 --with-headers=/home/jes/linux/include
543 Good luck
545 Jes Sorensen <jes@linuxcare.com>,
546 November 14th, 2000
547 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
548 \f
549 Version 2.1.3
551 * bug fixes
553 \f
554 Version 2.1.2
556 * bug fixes
558 \f
559 Version 2.1.1
561 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
563 * New xdr functions are added; some rpc functions are now 64bit clean.
565 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
567 * Fixed known incompatibilities with glibc 2.0.
569 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
571 * Optimized a number of functions (especially the ELF dynamic loader).
573 * Update timezone data files.
575 * lots of charmaps corrections
577 * some new locale definitions and charmaps
579 \f
580 Version 2.1
582 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
583 conform to POSIX member type requirements. Symbol versions have been
584 adjusted as needed within the library, and for direct use by applications,
585 but there is potential for problems if third-party libraries use
586 struct timeval as part of their interface. This does not present
587 a problem for X and other "essential" system libraries.
589 * An additional locale model to support C++ Standard Library locale
590 model and probably more was implemented by Ulrich Drepper.
592 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
593 symbol level.
595 * Miles Bader provided the `argp' function family to support hierachical
596 command line argument parsing, layered on top of getopt.
598 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
600 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
601 numbers.
603 * scanf recognizes the %a and %A format for scanning floating point numbers.
605 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
606 information and interfaces for the available integer types.
608 * about 130 new math functions were added to implement the ISO C9x math
609 library.
611 * the new header <complex.h> contains definitions of the complex math
612 functions from ISO C 9X.
614 * the new header <tgmath.h> defines generic macros to use complex or
615 real valued functions.
617 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
619 * Andreas Jaeger provided a test suite for the math library.
621 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
623 * Ulrich Drepper added character set conversion functions (iconv).
625 * Optimized string functions have been added.
627 * The localedata addon is now part of glibc.
629 * An implementation of profiling shared libraries was added by Ulrich Drepper.
631 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
632 daemon for NSS (nscd).
634 Missing a better place here are some numbers on improvements. Under
635 Linux 2.1.125 un-tar-ing the kernel sources takes
637 user system wall
639 using local files 12.19s 6.88s 22.91s
641 using NIS 13.92s 8.91s 26.34s
643 using NIS & nscd 10.37s 7.34s 25.30s
645 using NIS+ 27.57s 30.37s 640.46s
647 using NIS+ & nscd 10.25s 7.83s 26.51s
649 using NIS & old nscd [1] 13.83s 8.32s 29.60s
651 Keep in mind that non-namelookup related operations dominate above times.
652 It was just a common complain that using NIS+ unpacking the kernel is
653 horribly slow.
655 [1] The old nscd implementation is not available anymore since it was
656 distributed with glibc up to version 2.0.98 and thus is now replaced.
658 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
660 * Mark Kettenis provided a Hesiod NSS module.
662 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
663 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
665 * rcmd can now handle netgroups (Dick Streefland).
667 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
668 Bambrough.
670 * Support for the IPv6 protocol has been added to the socket API, as per the
671 latest draft standards.
673 * Support for Linux 2.2 has been added.
675 * Interface changes relative to the latest 2.0.x release:
676 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
677 addseverity NEW: Unix98
678 alphasort64 NEW: LFS
679 argp_err_exit_status NEW: argp, GNU ext
680 argp_error NEW: argp, GNU ext
681 argp_failure NEW: argp, GNU ext
682 argp_help NEW: argp, GNU ext
683 argp_parse NEW: argp, GNU ext
684 argp_program_bug_address NEW: argp, GNU ext
685 argp_program_version NEW: argp, GNU ext
686 argp_program_version_hook NEW: argp, GNU ext
687 argp_state_help NEW: argp, GNU ext
688 argp_usage NEW: argp, GNU ext
689 authdes_create NEW: Secure RPC
690 authdes_getucred NEW: Secure RPC
691 authdes_pk_create NEW: Secure RPC
692 backtrace NEW: GNU ext.
693 backtrace_symbols NEW: GNU ext.
694 backtrace_symbols_fd NEW: GNU ext.
695 cacos NEW: ISO C 9x
696 cacosf NEW: ISO C 9x
697 cacosh NEW: ISO C 9x
698 cacoshf NEW: ISO C 9x
699 cacoshl NEW: ISO C 9x
700 cacosl NEW: ISO C 9x
701 capget NEW: kernel
702 capset NEW: kernel
703 carg NEW: ISO C 9x
704 cargf NEW: ISO C 9x
705 cargl NEW: ISO C 9x
706 casin NEW: ISO C 9x
707 casinf NEW: ISO C 9x
708 casinh NEW: ISO C 9x
709 casinhf NEW: ISO C 9x
710 casinhl NEW: ISO C 9x
711 casinl NEW: ISO C 9x
712 catan NEW: ISO C 9x
713 catanf NEW: ISO C 9x
714 catanh NEW: ISO C 9x
715 catanhf NEW: ISO C 9x
716 catanhl NEW: ISO C 9x
717 catanl NEW: ISO C 9x
718 cbc_crypt NEW: Secure RPC
719 ccos NEW: ISO C 9x
720 ccosf NEW: ISO C 9x
721 ccosh NEW: ISO C 9x
722 ccoshf NEW: ISO C 9x
723 ccoshl NEW: ISO C 9x
724 ccosl NEW: ISO C 9x
725 cexp NEW: ISO C 9x
726 cexpf NEW: ISO C 9x
727 cexpl NEW: ISO C 9x
728 cimag NEW: ISO C 9x
729 cimagf NEW: ISO C 9x
730 cimagl NEW: ISO C 9x
731 clearerr_locked REMOVED
732 clntunix_create NEW: sunrpc ext
733 clog NEW: ISO C 9x
734 clog10 NEW: ISO C 9x
735 clog10f NEW: ISO C 9x
736 clog10l NEW: ISO C 9x
737 clogf NEW: ISO C 9x
738 clogl NEW: ISO C 9x
739 conj NEW: ISO C 9x
740 conjf NEW: ISO C 9x
741 conjl NEW: ISO C 9x
742 cpow NEW: ISO C 9x
743 cpowf NEW: ISO C 9x
744 cpowl NEW: ISO C 9x
745 cproj NEW: ISO C 9x
746 cprojf NEW: ISO C 9x
747 cprojl NEW: ISO C 9x
748 creal NEW: ISO C 9x
749 crealf NEW: ISO C 9x
750 creall NEW: ISO C 9x
751 creat64 NEW: LFS
752 csin NEW: ISO C 9x
753 csinf NEW: ISO C 9x
754 csinh NEW: ISO C 9x
755 csinhf NEW: ISO C 9x
756 csinhl NEW: ISO C 9x
757 csinl NEW: ISO C 9x
758 csqrt NEW: ISO C 9x
759 csqrtf NEW: ISO C 9x
760 csqrtl NEW: ISO C 9x
761 ctan NEW: ISO C 9x
762 ctanf NEW: ISO C 9x
763 ctanh NEW: ISO C 9x
764 ctanhf NEW: ISO C 9x
765 ctanhl NEW: ISO C 9x
766 ctanl NEW: ISO C 9x
767 des_setparity NEW: Secure RPC
768 ecb_crypt NEW: Secure RPC
769 endutxent NEW: Unix98
770 exp10 NEW: ISO C 9x
771 exp10f NEW: ISO C 9x
772 exp10l NEW: ISO C 9x
773 exp2 NEW: ISO C 9x
774 exp2f NEW: ISO C 9x
775 exp2l NEW: ISO C 9x
776 fattach NEW: STREAMS
777 fdetach NEW: STREAMS
778 fdim NEW: ISO C 9x
779 fdimf NEW: ISO C 9x
780 fdiml NEW: ISO C 9x
781 feclearexcept NEW: ISO C 9x
782 fegetenv NEW: ISO C 9x
783 fegetexceptflag NEW: ISO C 9x
784 fegetround NEW: ISO C 9x
785 feholdexcept NEW: ISO C 9x
786 feof_locked REMOVED
787 feraiseexcept NEW: ISO C 9x
788 ferror_locked REMOVED
789 fesetenv NEW: ISO C 9x
790 fesetexceptflag NEW: ISO C 9x
791 fesetround NEW: ISO C 9x
792 fetestexcept NEW: ISO C 9x
793 feupdateenv NEW: ISO C 9x
794 fflush_locked REMOVED
795 ffsl NEW: GNU ext.
796 ffsll NEW: GNU ext.
797 fgetpos64 NEW: LFS
798 fgets_unlocked NEW: GNU ext.
799 fileno_locked REMOVED
800 fma NEW: ISO C 9x
801 fmaf NEW: ISO C 9x
802 fmal NEW: ISO C 9x
803 fmax NEW: ISO C 9x
804 fmaxf NEW: ISO C 9x
805 fmaxl NEW: ISO C 9x
806 fmin NEW: ISO C 9x
807 fminf NEW: ISO C 9x
808 fminl NEW: ISO C 9x
809 fmtmsg NEW: Unix98
810 fopen64 NEW: LFS
811 fputc_locked REMOVED
812 fputs_unlocked NEW: GNU ext.
813 fread_unlocked NEW: GNU ext.
814 freopen64 NEW: LFS
815 fseeko NEW: Unix98
816 fsetpos64 NEW: LFS
817 fstatfs64 NEW: LFS
818 fstatvfs NEW: Unix98
819 fstatvfs64 NEW: LFS
820 ftello NEW: Unix98
821 ftello64 NEW: LFS
822 ftruncate64 NEW: LFS
823 ftw64 NEW: LFS
824 fwrite_unlocked NEW: GNU ext.
825 gai_strerror NEW: IPv6
826 gamma_r REMOVED
827 gammaf_r REMOVED
828 gammal_r REMOVED
829 getchar_locked REMOVED
830 getdate NEW: Unix98
831 getdate_err NEW: Unix98
832 getdate_r NEW: GNU ext.
833 getmsg NEW: STREAMS
834 getnameinfo NEW: IPv6
835 getnetname NEW: Secure RPC
836 getpmsg NEW: STREAMS
837 getpt NEW: Unix98 PTY
838 getrlimit64 NEW: LFS
839 getutxent NEW: Unix98
840 getutxid NEW: Unix98
841 getutxline NEW: Unix98
842 glob64 NEW: GNU ext.
843 globfree64 NEW: GNU ext.
844 gnu_get_libc_release NEW: GNU ext.
845 gnu_get_libc_version NEW: GNU ext.
846 grantpt NEW: Unix98 PTY
847 host2netname NEW: Secure RPC
848 iconv NEW: iconv
849 iconv_close NEW: iconv
850 iconv_open NEW: iconv
851 if_freenameindex NEW: IPv6
852 if_indextoname NEW: IPv6
853 if_nameindex NEW: IPv6
854 if_nametoindex NEW: IPv6
855 in6addr_any NEW: IPv6
856 in6addr_loopback NEW: IPv6
857 inet6_isipv4mapped NEW: IPv6
858 isastream NEW: STREAMS
859 iswblank NEW: GNU ext.
860 key_decryptsession NEW: Secure RPC
861 key_decryptsession_pk NEW: Secure RPC
862 key_encryptsession NEW: Secure RPC
863 key_encryptsession_pk NEW: Secure RPC
864 key_gendes NEW: Secure RPC
865 key_get_conv NEW: Secure RPC
866 key_secretkey_is_set NEW: Secure RPC
867 key_setnet NEW: Secure RPC
868 key_setsecret NEW: Secure RPC
869 llrint NEW: ISO C 9x
870 llrintf NEW: ISO C 9x
871 llrintl NEW: ISO C 9x
872 llround NEW: ISO C 9x
873 llroundf NEW: ISO C 9x
874 llroundl NEW: ISO C 9x
875 log2 NEW: ISO C 9x
876 log2f NEW: ISO C 9x
877 log2l NEW: ISO C 9x
878 lrint NEW: ISO C 9x
879 lrintf NEW: ISO C 9x
880 lrintl NEW: ISO C 9x
881 lround NEW: ISO C 9x
882 lroundf NEW: ISO C 9x
883 lroundl NEW: ISO C 9x
884 lseek64 NEW: LFS
885 makecontext NEW: Unix98
886 mempcpy NEW: GNU ext.
887 mmap64 NEW: LFS
888 moncontrol REMOVED
889 modify_ldt NEW: kernel
890 nan NEW: ISO C 9x
891 nanf NEW: ISO C 9x
892 nanl NEW: ISO C 9x
893 nearbyint NEW: ISO C 9x
894 nearbyintf NEW: ISO C 9x
895 nearbyintl NEW: ISO C 9x
896 netname2host NEW: Secure RPC
897 netname2user NEW: Secure RPC
898 nexttoward NEW: ISO C 9x
899 nexttowardf NEW: ISO C 9x
900 nexttowardl NEW: ISO C 9x
901 nftw NEW: Unix98
902 nftw64 NEW: LFS
903 open64 NEW: LFS
904 passwd2des NEW: Secure RPC
905 pow10 NEW: GNU ext.
906 pow10f NEW: GNU ext.
907 pow10l NEW: GNU ext.
908 pread NEW: Unix98
909 pread64 NEW: LFS
910 printf_size NEW: GNU ext.
911 printf_size_info NEW: GNU ext.
912 profil_counter REMOVED
913 pthread_mutexattr_getkind_np REPLACED
914 pthread_mutexattr_setkind_np REPLACED
915 ptsname NEW: Unix98 PTY
916 ptsname_r NEW: Unix98 PTY
917 putc_locked REMOVED
918 putchar_locked REMOVED
919 putgrent NEW: GNU ext.
920 putmsg NEW: STREAMS
921 putpmsg NEW: STREAMS
922 pututxline NEW: Unix98
923 pwrite NEW: Unix98
924 pwrite64 NEW: LFS
925 readdir64 NEW: LFS
926 readdir64_r NEW: LFS
927 remquo NEW: ISO C 9x
928 remquof NEW: ISO C 9x
929 remquol NEW: ISO C 9x
930 round NEW: ISO C 9x
931 roundf NEW: ISO C 9x
932 roundl NEW: ISO C 9x
933 rtime NEW: GNU ext.
934 scalbln NEW: ISO C 9x
935 scalblnf NEW: ISO C 9x
936 scalblnl NEW: ISO C 9x
937 scandir64 NEW: LFS
938 sendfile NEW: kernel
939 setcontext NEW: Unix98
940 setrlimit64 NEW: LFS
941 setutxent NEW: Unix98
942 sighold NEW: Unix98
943 sigignore NEW: Unix98
944 sigqueue NEW: POSIX.1b
945 sigrelse NEW: Unix98
946 sigset NEW: POSIX.1b
947 sigtimedwait NEW: POSIX.1b
948 sigwaitinfo NEW: POSIX.1b
949 sincos NEW: GNU ext.
950 sincosf NEW: GNU ext.
951 sincosl NEW: GNU ext.
952 statfs64 NEW: LFS
953 statvfs NEW: Unix98
954 statvfs64 NEW: LFS
955 strcasestr NEW: GNU ext.
956 strtoimax NEW: ISO C 9x
957 strtoumax NEW: ISO C 9x
958 strverscmp NEW: GNU ext.
959 svcauthdes_stats NEW: Secure RPC
960 svcunix_create NEW: sunrpc etx
961 svcunixfd_create NEW: sunrpc ext
962 swapcontext NEW: Unix98
963 tcgetsid NEW: Unix98 PTY
964 tdestroy NEW: GNU ext.
965 tgamma NEW: ISO C 9x
966 tgammaf NEW: ISO C 9x
967 tgammal NEW: ISO C 9x
968 tmpfile64 NEW: LFS
969 trunc NEW: ISO C 9x
970 truncate64 NEW: LFS
971 truncf NEW: ISO C 9x
972 truncl NEW: ISO C 9x
973 umount2 NEW: kernel
974 unlockpt NEW: Unix98 PTY
975 updwtmpx NEW: Unix98
976 user2netname NEW: Secure RPC
977 utmpxname NEW: Unix98
978 versionsort NEW: GNU ext.
979 versionsort64 NEW: GNU ext.
980 waitid NEW: Unix98
981 wcscasecmp NEW: GNU ext.
982 wcsncasecmp NEW: GNU ext.
983 wcsnlen NEW: GNU ext.
984 wcstoimax NEW: ISO C 9x
985 wcstoll NEW: ISO C 9x
986 wcstoull NEW: ISO C 9x
987 wcstoumax NEW: ISO C 9x
988 wcswcs NEW: Unix98
989 wordexp NEW: POSIX.2
990 wordfree NEW: POSIX.2
991 write_profiling REMOVED
992 xdecrypt NEW: Secure RPC
993 xdr_authdes_cred NEW: Secure RPC
994 xdr_authdes_verf NEW: Secure RPC
995 xdr_cryptkeyarg NEW: Secure RPC
996 xdr_cryptkeyarg2 NEW: Secure RPC
997 xdr_cryptkeyres NEW: Secure RPC
998 xdr_getcredres NEW: Secure RPC
999 xdr_key_netstarg NEW: Secure RPC
1000 xdr_key_netstres NEW: Secure RPC
1001 xdr_keybuf NEW: Secure RPC
1002 xdr_keystatus NEW: Secure RPC
1003 xdr_netnamestr NEW: Secure RPC
1004 xdr_sizeof NEW: Secure RPC
1005 xdr_unixcred NEW: sunrpc ext
1006 xencrypt NEW: Secure RPC
1007 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1008 \f
1009 Version 2.0.6
1011 * more bug fixes
1013 \f
1014 Version 2.0.5
1016 * more bug fixes
1018 * inet_ntoa is thread-safe
1020 * updwtmp is moved from libutil to libc
1022 * rewrite of cbrt function
1024 * update of timezone data
1025 \f
1026 Version 2.0.4
1028 * more bug fixes
1029 \f
1030 Version 2.0.3
1032 * more bug fixes
1033 \f
1034 Version 2.0.2
1036 * more bug fixes
1038 * add atoll function
1040 * fix complex problems in Berkeley DB code
1042 * fix math functions
1043 \f
1044 Version 2.0.1
1046 * fixed lots of header problems (especially Linux/GNU specific)
1048 * dynamic loader preserves all registers
1050 * Roland McGrath provided support for handling of auxiliary objects in
1051 the ELF dynamic loader.
1053 * support for parallel builds is improved
1054 \f
1055 Version 2.0
1057 * GNU extensions are no longer declared by default. To enable them you
1058 must define the macro `_GNU_SOURCE' in your program or compile with
1059 `-D_GNU_SOURCE'.
1061 * The library has changed from using GNU ld symbol aliases to using weak
1062 symbols where available. The ELF object file format supports weak
1063 symbols; GNU ld also supports weak symbols in the a.out format. (There
1064 is also now support for other GNU ld extensions in ELF. Use the
1065 `--with-elf' option to configure to indicate you have ELF, and
1066 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1067 of many files which contained only symbol aliases, reducing the size of
1068 the source and the compiled library; many other files were renamed to
1069 less cryptic names previously occupied by the symbol alias files.
1070 There is a new header file <elf.h> for programs which operate on
1071 files in the ELF format.
1073 * Converted to Autoconf version 2, so `configure' has more options.
1074 Run `configure --help' to see the details.
1076 * The library can now be configured to build profiling, highly-optimized
1077 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1078 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1079 `configure' enable building these extra libraries. The shared library is
1080 built by default when using both ELF and GNU ld. When shared libraries
1081 are enabled, the new library `-ldl' is available for arbitrary run-time
1082 loading of shared objects; its interface is defined in <dlfcn.h>. The
1083 new header file <link.h> gives access to the internals of the run-time
1084 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1085 application of same name on other systems and it provides information
1086 about dynamically linked binaries.
1088 * The C library now provides the run-time support code for profiling
1089 executables compiled with `-pg'. Programs can control the profiling code
1090 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1091 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1092 the support for this file format was contributed by David Mosberger-Tang.
1094 * The math code has been replaced with a math library based on fdlibm from
1095 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1096 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1097 functions. The math functions now reside in a separate library, so
1098 programs using them will need to use `-lm' their linking commands.
1100 * John C. Bowman contributed optimized ix87 assembler inline functions.
1102 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1103 mechanism similar to that found in Solaris 2. This is now used for the
1104 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1105 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1106 file controls what services are used for each individual database. This
1107 works by loading shared libraries with names specified in `nsswitch.conf',
1108 so service modules can be changed or added at any time without even
1109 relinking any program. Currently there are the file, db, and NIS based
1110 NSS services available.
1112 * The new functions `strtoq' and `strtouq' parse integer values from
1113 strings, like `strtol' and `strtoul', but they return `long long int' and
1114 `unsigned long long int' values, respectively (64-bit quantities).
1116 * The new functions `strtof' and `strtold' parse floating-point values from
1117 strings, like `strtod', but they return `float' and `long double' values,
1118 respectively (on some machines `double' and `long double' are the same).
1120 * Ulrich Drepper has contributed new implementations of the floating-point
1121 printing and reading code used in the `printf' family of functions and
1122 `strtod', `strtof', and `strtold'. These new functions are perfectly
1123 accurate, and much faster than the old ones.
1125 * The implementation of the POSIX locale model was completely rewritten by
1126 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1127 to compile the POSIX locale definition.
1129 * The former dummy implementations of the strcoll and strxfrm function are
1130 now replaced by fully functional code contributed by Ulrich Drepper. The
1131 collation information comes from the POSIX locale definitions.
1133 * The new header <langinfo.h> defines an interface for accessing
1134 various locale-dependent data (using the locale chosen with `setlocale').
1136 * Ulrich Drepper has contributed a new suite of functions for operation on
1137 wide-character and multibyte-character strings, in <wchar.h>;
1138 and classification and case conversion of wide characters, in <wctype.h>.
1139 These new functions are conforming to the ISO C, Amendement 1 specification.
1141 * There is now a second implementation of the standard I/O library available.
1142 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1143 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1145 * You can now use positional parameter specifications in format strings
1146 for the `printf' and `scanf' families of functions. For example,
1147 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1148 ``Number 6, Mr Jones''. This is mainly useful when providing different
1149 format strings for different languages, whose grammars may dictate
1150 different orderings of the values being printed. To support this
1151 feature, the interface for `register_printf_handler' has changed; see
1152 the header file <printf.h> for details.
1154 * The `printf' and `scanf' families of functions now understand a new
1155 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1156 to group numbers as indicated by the locale; for `scanf' and friends, this
1157 says to accept as valid only a number with all the proper grouping
1158 separators in the right places. In the default "C" locale, numbers are
1159 not grouped; but locales for specific countries will define the usual
1160 conventions (i.e. separate thousands with `,' in the US locale).
1162 * The pgrp functions have been regularized, slightly incompatibly but much
1163 less confusingly. The core functions are now `getpgid' and `setpgid',
1164 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1165 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1166 provided for compatibility. There is no longer an incompatible `getpgrp'
1167 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1169 * The new header file <fts.h> and suite of functions simplify programs that
1170 operate on directory trees. This code comes from 4.4 BSD.
1172 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1173 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1174 NSS scheme used in glibc.
1176 * There is a new malloc debugging hook `__memalign_hook'.
1178 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1179 `unsigned int' in <sys/types.h>. These are for compatibility only and
1180 their use is discouraged.
1182 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1183 done differently, so that it works even without GNU ld.
1185 * New function `euidaccess' checks allowed access to a file like `access',
1186 but using the effective IDs instead of the real IDs.
1188 * The time zone data files have been updated for the latest and greatest
1189 local time conventions of the countries of the world.
1191 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1192 see <dirent.h>.
1194 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1195 for formatting floating-point numbers. They are provided only for
1196 compatibility; new programs should use `sprintf' instead. There are
1197 also equivalent function for the `long double' floating-point type and
1198 all functions also exist in a reentrant form.
1200 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1201 functions for maintaining the login-record files (primarily of use to
1202 system programs such as `login'), and convenient functions for
1203 allocating and initializing a pseudo-terminal (pty) device.
1205 * Ulrich Drepper has contributed new support for System V style
1206 shared memory and IPC on systems that support it.
1208 * Ulrich Drepper has contributed several miscellaneous new functions found
1209 in System V: The `hsearch' family of functions provide an effective
1210 implementation of hash tables; `a64l' and `l64a' provide a very simple
1211 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1212 number generator.
1214 * Ulrich Drepper has contributed new reentrant counterparts for the
1215 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1217 * Ulrich Drepper has contributed new, highly-optimized versions of several
1218 string functions for the i486/Pentium family of processors.
1220 * Ulrich Drepper has updated the Linux-specific code, based largely
1221 on work done in Hongjiu Lu's version of GNU libc for Linux.
1222 The GNU library now supports Linux versions 2.0.10 and later,
1223 using the ELF object file format (i[3456]86-*-linux).
1225 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1227 * David Mosberger-Tang and Richard Henderson have ported the C library
1228 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1229 dynamic linking support for ELF/Alpha.
1231 * Richard Henderson contributed several Alpha optimized assembler function
1232 for arithmetic and string handling.
1234 * Ulrich Drepper has contributed a new set of message catalog functions to
1235 support multiple languages using the <libintl.h> interface, for use with
1236 his new package GNU gettext. Translation volunteers have contributed
1237 catalogs of the library's messages in Spanish, German, and Korean.
1239 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1240 program and the `catgets' function for reading the catalog files it
1241 creates. (The <libintl.h> interface is preferred; we include the
1242 <nl_types.h> interface using `catgets' only for source compatibility with
1243 programs already written to use it.)
1245 * New header file <values.h> gives SVID-compatible names for <limits.h>
1246 constants.
1248 * Various new macros, declarations, and small header files for compatibility
1249 with 4.4 BSD.
1251 * New function `group_member' is a convenient way to check if a process has
1252 a given effective group ID.
1254 * When using GCC 2.7 and later, the socket functions are now declared in a
1255 special way so that passing an argument of type `struct sockaddr_in *',
1256 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1257 `struct sockaddr *' type, does not generate a type-clash warning.
1259 * New function `error' declared in header file <error.h> is a convenient
1260 function for printing error messages and optionally exiting; this is the
1261 canonical function used in GNU programs. The new functions `err', `warn',
1262 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1263 doing the same thing.
1265 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1266 POSIX.2 `glob' function to do ~ and {...} expansion.
1268 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1269 `clearenv' which is used in POSIX.9 is also available.
1271 * New function `getsid' returns session ID number on systems that support it.
1273 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1274 files <db.h> and <mpool.h> provide a rich set of functions for several
1275 types of simple databases stored in memory and in files, and <ndbm.h> is
1276 an old `ndbm'-compatible interface using the `db' functions. Link with
1277 `-ldb' to get these functions.
1279 * New macro `strdupa' copies a string like `strdup', but uses local stack
1280 space from `alloca' instead of dynamic heap space from `malloc'.
1282 * New function `strnlen' is like `strlen' but searches only a given maximum
1283 number of characters for the null terminator. `stpncpy', `strndup' and
1284 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1285 function.
1287 * New function `statfs' in header <sys/statfs.h>.
1289 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1290 provide convenient functions for operating on blocks of null-terminated
1291 strings.
1293 * A new suite of functions in <utmp.h> handle all the details of reading
1294 and writing the utmp file.
1296 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1297 Thorsten Kukuk.
1299 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1300 completely POSIX compliant and also implemented the extended functionality
1301 to handle alternate digit representation and alternate era date formats.
1303 * Ulrich Drepper provided an implementation of the `strptime' function
1304 defined in XPG4.2 which transforms a string into a `struct tm' value.
1306 * Paul Eggert provided the tzselect shell script as part of the timezone
1307 code. The shell script makes it easy to select the correct timezone
1308 specification.
1310 * The implementation of the malloc family of functions is completely replaced
1311 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1312 The implementation uses the mmap function (if available) and it is
1313 optimized for the use in multi threaded programs.
1315 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1316 functions. This new functionality is usable by specifying a special
1317 salt string and it is compatible with implementation on *BSD systems.
1319 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1320 `getsubopt' to handle second level command line options, `bsd_signal'
1321 to access BSD style `signal' functionality, the obsolete `regexp' style
1322 expression matcher.
1324 * the `lchown' function is available on system which support this
1325 functionality.
1327 * The implementation of the shadow password handling function was contributed
1328 by Ulrich Drepper.
1330 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1332 * POSIX.1g support was added. The <sys/select.h> header is available,
1333 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1334 implementation of `getaddrinfo'.
1335 \f
1336 Version 1.09
1338 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1340 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1341 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1343 * The new function `daemon' from 4.4 BSD is useful for server programs that
1344 want to put themselves in the background.
1346 * Joel Sherrill has contributed support for several standalone boards that
1347 run without an operating system.
1349 * `printf', `scanf' and friends now accept a `q' type modifier for long
1350 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1352 * All of the code taken from BSD (notably most of the math and networking
1353 routines) has been updated from the BSD 4.4-Lite release.
1355 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1357 * The new functions `getdomainname' and `setdomainname' fetch or change the
1358 YP/NIS domain name. These are system calls which exist on systems which
1359 have YP (aka NIS).
1361 * The time zone data files have been updated for the latest international
1362 conventions.
1364 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1365 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1366 \f
1367 Version 1.08
1369 * The C library now includes support for Sun RPC, from Sun's free
1370 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1371 are included. (There is still no support for YP.)
1373 * Tom Quinn has contributed a port of the C library to SGI machines running
1374 Irix 4 (mips-sgi-irix4).
1376 * The new `lockf' function is a simplified interface to the locking
1377 facilities of `fcntl', included for compatibility.
1379 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1381 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1383 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1384 compatibility.
1386 * The error message printed by `assert' for a failed assertion now includes
1387 the name of the program (if using GNU ld) and the name of the calling
1388 function (with versions of GCC that support this).
1390 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1392 * The library now includes the <sys/mman.h> header file and memory
1393 management functions `mmap', `munmap', `mprotect', `msync', and
1394 `madvise', on systems that support those facilities.
1396 * The interface for `mcheck' has changed slightly: the function called to
1397 abort the program when an allocation inconsistency is detected now takes
1398 an argument that indicates the type of failure. The new function
1399 `mprobe' lets you request a consistency check for a particular block at
1400 any time (checks are normally done only when you call `free' or `realloc'
1401 on a block).
1403 * It is now possible to easily cross-compile the C library, building on one
1404 system a library to run on another machine and/or operating system. All
1405 you need to do is set the variable `HOST_CC' in `configparms' to the
1406 native compiler for programs to run on the machine you are building on (a
1407 few generator programs are used on Unix systems); set `CC' to the
1408 cross-compiler.
1410 * The new function `fexecve' (only implemented on the GNU system) executes
1411 a program file given a file descriptor already open on the file.
1412 \f
1413 Version 1.07
1415 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1416 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1418 * You can set the variable `libprefix' in `configparms' to specify a prefix
1419 to be prepended to installed library files; this makes it easy to install
1420 the GNU C library to be linked as `-lgnuc' or whatever.
1422 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1423 copies a limited number of characters from a string, and returns the
1424 address of the last character written.
1426 * You no longer need to check for whether the installed `stddef.h' is
1427 compatible with the GNU C library. configure now checks for you.
1429 * You can now define a per-stream `fileno' function to convert the
1430 stream's cookie into an integral file descriptor.
1432 * ``malloc (0)'' no longer returns a null pointer. Instead, it
1433 allocates zero bytes of storage, and returns a unique pointer which
1434 you can pass to `realloc' or `free'. The behavior is undefined if
1435 you dereference this pointer.
1437 * The C library now runs on Sony NEWS m68k machines running either
1438 NewsOS 3 or NewsOS 4.
1440 * The new `syscall' function is a system-dependent primitive function
1441 for invoking system calls. It has the canonical behavior on Unix
1442 systems, including unreliable return values for some calls (such as
1443 `pipe', `fork' and `getppid').
1445 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
1446 to `EAGAIN', which is the preferred name. On systems whose kernels
1447 use two distinct codes, the C library now translates EWOULDBLOCK to
1448 EAGAIN in every system call function.
1449 \f
1450 Version 1.06
1452 * The GNU C Library Reference Manual is now distributed with the library.
1453 `make dvi' will produce a DVI file of the printed manual.
1454 `make info' will produce Info files that you can read on line using C-h i
1455 in Emacs or the `info' program.
1456 Please send comments on the manual to bug-glibc-manual@gnu.org.
1458 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
1460 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
1462 * Jason Merrill has contributed a port to the Sequent Symmetry running
1463 Dynix version 3 (i386-sequent-dynix).
1465 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
1466 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
1468 * New function `memory_warnings' lets you arrange to get warnings when
1469 malloc is running out of memory to allocate, like Emacs gives you.
1471 * The C library now contains the relocating allocator used in Emacs 19 for
1472 its editing buffers. This allocator (ralloc) minimizes allocation
1473 overhead and fragmentation by moving allocated regions around whenever it
1474 needs to. You always refer to a ralloc'd region with a "handle" (a
1475 pointer to a pointer--an object of type `void **').
1477 * There is a new `printf' format: `%m' gives you the string corresponding
1478 to the error code in `errno'.
1480 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
1481 or `%[' conversion, but instead of filling in a fixed-sized buffer you
1482 pass, the `a' modifier says to fill in a `char **' you pass with a
1483 malloc'd string.
1485 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
1486 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
1487 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
1489 * `mkstemp' is a traditional Unix function to atomically create and open a
1490 uniquely-named temporary file.
1491 \f
1492 Version 1.05
1494 * The standard location for the file that says what the local timezone is
1495 has changed again. It is now `/usr/local/etc/localtime' (or more
1496 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
1498 * The distribution no longer contains any files with names longer than 14
1499 characters.
1501 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
1502 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
1504 * New functions `ttyslot' and `syslog' from 4.4 BSD.
1505 \f
1506 Version 1.04
1508 * The configuration process has changed quite a bit. The `configure'
1509 script is now used just like the configuration scripts for other GNU
1510 packages. The `sysdeps' directory hierarchy is much rearranged.
1511 The file `INSTALL' explains the new scheme in detail.
1513 * The header files no longer need to be processed into ANSI C and
1514 traditional C versions. There is just one set of files to install, and
1515 it will work with ANSI or old C compilers (including `gcc -traditional').
1517 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
1518 MIPS DECStation running Ultrix 4.
1520 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
1521 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
1522 made itself into a shared library.
1524 * Yet further improved support for the i386, running 4.3 BSD-like systems
1525 (such as Mach 3 with the Unix single-server), or System V.
1527 * New function `strncasecmp' to do case-insensitive string comparison
1528 with limited length.
1530 * New function `strsep' is a reentrant alternative to `strtok'.
1532 * New functions `scandir' and `alphasort' for searching directories.
1534 * New function `setenv' is a better interface to `putenv'.
1536 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
1537 function for traversing a directory tree.
1539 * The GNU obstack package is now also part of the C library.
1540 The new function `open_obstack_stream' creates a stdio stream that
1541 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
1542 formatted output directly to an obstack.
1544 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
1545 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
1547 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
1549 * The new functions `strfry' and `memfrob' do mysterious and wonderful
1550 things to your strings.
1552 * There are some new test programs: test-fseek, testmb, and testrand.
1554 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
1555 These ports are not finished, but are a good starting place for really
1556 supporting those systems.
1558 * `/etc/localtime' is now the standard location for the file that says what
1559 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
1560 This follows the general principle that `/etc' is the place for all local
1561 configuration files.
1563 * The C library header files now use `extern "C"' when used by the C++
1564 compiler, so the C library should now work with C++ code.
1566 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
1567 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
1568 in <strings.h>.)
1570 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
1571 function which uses the `merge sort' algorithm, and is said to be
1572 significantly faster than the old GNU `qsort' function. Merge sort is
1573 now the standard `qsort' function. The new algorithm can require a lot
1574 of temporary storage; so, the old sorting function is called when the
1575 required storage is not available.
1577 * The C library now includes Michael Glad's Ultra Fast Crypt, which
1578 provides the Unix `crypt' function, plus some other entry points.
1580 * The code and header files taken from 4.4 BSD have been updated with the
1581 latest files released from Berkeley.
1582 \f
1583 ----------------------------------------------------------------------
1584 Copyright information:
1586 Copyright (C) 1992-1999,2000,2001,2002,2003,2004,2005,2006
1587 Free Software Foundation, Inc.
1589 Permission is granted to anyone to make or distribute verbatim copies
1590 of this document as received, in any medium, provided that the
1591 copyright notice and this permission notice are preserved,
1592 thus giving the recipient permission to redistribute in turn.
1594 Permission is granted to distribute modified versions
1595 of this document, or of portions of it,
1596 under the above conditions, provided also that they
1597 carry prominent notices stating who last changed them.
1598 \f
1599 Local variables:
1600 version-control: never
1601 End: