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1 GNU C Library NEWS -- history of user-visible changes. 2005-4-5
2 Copyright (C) 1992-2002,2003,2004,2005 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 2.4
10 * More overflow detection functions.
12 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
13 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
15 * It is now possible to install audit libraries for the dynamic linker using
16 LD_AUDIT. Implemented by Ulrich Drepper.
18 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
19 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
20 For a libc and libpthread that works well on Linux 2.4 kernels, we
21 recommend using the stable 2.3 branch.
22 \f
23 Version 2.3.5
25 * The following bugs are resolved with this release:
27 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
28 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
29 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
30 777, 787, 821, 822, 823, 825
32 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
33 \f
34 Version 2.3.4
36 * Support for RFC 3678. Real implementations exist only for Linux so far.
37 Implemented by Ulrich Drepper.
39 * nscd can now cache entries persistently. Expiring entries are reloaded.
40 For speedups the cache can be shared in memory with client processes.
41 Implemented by Ulrich Drepper.
43 * nscd can now perform SELinux checks.
44 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
46 * getaddrinfo queries are now cached. Canonical name lookup is performed
47 efficiently.
48 Implemented by Ulrich Drepper.
50 * The nothrow function attribute is used when headers are used by gcc when
51 compiling C code. This can avoid significant amounts of exception
52 handling data.
54 * The malloc functions perform more error checking and are stricter when
55 it comes to reacting on errors. The default action is to terminate
56 the process after showing an error message. Implemented by Ulrich Drepper.
58 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
59 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
61 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
62 namespaces using the new function dlmopen(). This feature is of course,
63 like most other dynamic loading functionality, not available in statically
64 linked applications. Implemented by Ulrich Drepper.
66 * Low-overhead boundary checking variants of string and some stdio functions
67 were added. These are to be used in conjunction with a gcc patch by
68 Jakub Jelinek which adds calls to these functions if possible.
69 Implemented by Jakub Jelinek and Ulrich Drepper.
71 * Old code for several operating systems and machine architectures that
72 have not been in working condition in a long time have been removed from
73 the main source tree maintained by the GNU C Library's maintainers.
74 These files are now reside in the separate `ports' source module
75 that is usable as an add-on when building the library.
76 \f
77 Version 2.3.3
79 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
80 interrogate the dynamic linker, compatible with the Solaris interface.
82 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
83 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
85 * getifaddrs now uses the netlink interface on Linux to get its information.
86 Implemented by Thorsten Kukuk.
88 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
89 Implemented by Ulrich Drepper.
91 * support for non-executable stacks on x86 has been added. Changes mostly
92 by Roland McGrath.
94 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
95 and Ulrich Drepper.
97 * getaddrinfo now performs destination address selection according to
98 RFC 3484.
99 \f
100 Version 2.3.2
102 * Thread-safe interfaces for many functions that access locale data
103 were added in version 2.3, but these features were omitted from NEWS.
104 Many functions have variants with an `_l' suffix that take a `locale_t'
105 object as a parameter rather than consulting the current locale.
106 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
107 create and maintain `locale_t' objects. Additionally, the new function
108 `uselocale' sets "the current locale" (as used by functions not so
109 parameterized) set for an individual thread. These features were added
110 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
112 * The functions getresuid, getresgid, setresuid, and setresgid, which
113 have long been available on Linux, are now declared in <unistd.h>
114 and are now also available on the Hurd.
116 * ELF thread-local storage support (TLS) now works on x86-64.
118 * The new dynamic string token $LIB is expanded in shared library names.
119 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
121 * Aldy Hernandez contributed complete software floating point support for
122 PowerPC machines with no FPU.
124 * fexecve is implemented on Linux.
126 * The `btowc' function should work at least twice as fast due to
127 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
129 * With approriate thread add-ons cancelable functions are now implemented
130 in libc.so as well. No need to call the function in libpthread. This
131 change allowed to finally disable the incorrect and expensive handling
132 of weak definition in ld.so.
134 * Yet more PLT entries in libc.so have been removed. We finally arrived
135 at the bare minimum. Startup times improved appropriately.
137 * Support for the new Linux/x86 system call interface was added. The
138 AT_SYSINFO auxiliary vector entry is recognized and handled.
139 \f
140 Version 2.3
142 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
143 charsets.
145 * iconv (the program and the interface) now accepts empty names (excluding
146 options like //TRANSLIT) to mean "use charset of current locale".
148 * localedef can now transliterate characters in strings which are not in
149 the provided charmap. The information from the input locale is used.
151 * Prelinking support was added for ELF targets. This requires additional
152 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
154 * Read-only stdio streams now use mmap to speed up operation by eliminating
155 copying and buffer underflows. To use add 'm' to the mode string of
156 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
158 * The malloc functions were completely rewritten by Wolfram Gloger based
159 on Doug Lea's malloc-2.7.0.c.
161 * Isamu Hasegawa contributed a completely new and POSIX-conformant
162 implementation of regex.
164 * Bruno Haible upgraded the iconv and locale implementation to support
165 Unicode 3.2.
167 * Contents of the LC_* and LANG environment variables in the CEN style are
168 not recognized anymore. It never was used. Change by Ulrich Drepper.
170 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
171 thread-local storage (TLS) ABI on some platforms.
172 Changes by Ulrich Drepper. SH support by Kaz Kojima.
174 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
175 EUC-JISX0213, and TSCII.
177 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
178 BSD-compatible interface for getting all network interface addresses.
179 Implementation for IPv4 by Roland McGrath.
181 * Loading of locale data is faster due to the introduction of a locale
182 archive. Implemented by Roland McGrath and Ulrich Drepper.
184 * Startup times are significantly reduced by not using exported functions
185 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
186 and Ulrich Drepper.
188 * Steven Munroe contributed a port to PowerPC64/Linux.
189 \f
190 Version 2.2.6
192 * The Hurd now uses the GNU libio implementation of stdio rather than the
193 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
195 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
196 with the same behavior as the Linux system call of the same name.
197 \f
198 Version 2.2.5
200 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
201 128-bit long double format.
203 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
204 IBM1161, and IBM1162 charsets.
206 * Andreas Jaeger contributed a port to x86-64/Linux.
208 * Peter Bruin contributed a port to PowerPC/Hurd.
210 * libc functions using I/O streams now can handle wide-oriented streams
211 as well.
213 * optimizations in the dynamic linker. Binaries created by recent binutils
214 versions start up quicker due to reduced time spent on relocations.
216 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
217 \f
218 Version 2.2.4
220 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
221 asinh, atanh, j0 for the 128-bit long double format.
223 * Bruno Haible updated all the code handling Unicode in some form to
224 support Unicode 3.1.
226 * Speed of regex for single-byte locales is back to previous levels.
227 Patch by Isamu Hasegawa.
229 * Alpha, SPARC, and IA-64 now also using floating stacks.
231 * Startup time of internationalized applications greatly improved through
232 iconv cache. Use iconvconfig to generate the cache file.
233 Contributed by Ulrich Drepper.
235 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
236 severe performance problems. Patch by David Mosberger.
238 * The Hurd port got a lot more functionality like AIO, various stdio
239 extensions, etc. Mainly done by Roland McGrath.
241 * mtrace can now lookup symbols in shared libraries.
242 \f
243 Version 2.2.3
245 * Intel's IA-64 math library is largely integrated. It provides fast and
246 accurate implementatations for most basic and standard math functions
247 in float, double, and long double format.
249 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
250 and asin for the 96-bit long double format and asin, log, tan for the
251 128-bit long double format.
253 * The beginning of a last-bit accurate math library by IBM Haifa were added.
254 The basic double functions exist today. Contributed by Abraham Ziv
255 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
256 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
258 * An asynchronous name lookup library was added. The interface is designed
259 after POSIX AIO. The proposal was circulated beforehand to get comments.
260 No negative ones came in. Implemented by Ulrich Drepper.
262 * Port to S390/64bit contributed by Martin Schwidefsky
263 <schwidefsky@de.ibm.com>.
265 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
266 of functions for Linux/IA-64.
268 * The RPC code is now thread safe. Threads can now use the same service
269 of different services at the same time. Patch by Eric Norum
270 <eric.norum@usask.ca> with some help by Ulrich Drepper.
272 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
273 family of functions for Linux/S390.
275 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
276 of functions for Linux/x86.
278 * Port to Linux/CRIS contributed by Axis Communications.
279 \f
280 Version 2.2.2
282 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
283 we can now check for namespace violations and missing declarations. The
284 result is that almost all headers are now Unix-compliant (as defined in
285 the upcoming XPG6). The negative side is that some programs might need
286 corrections, too, if they depend on the incorrect form of the headers in
287 previous versions which defined too many symbols and included too many
288 other headers.
290 * regex now handles multibyte character sets correctly.
291 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
293 * iconv (the program) does now conform to the upcoming XPG6 and handles
294 charmaps. Instead of the charset names the path of charmaps can be
295 provided and the conversion happens based on this data.
296 Contributed by Ulrich Drepper.
298 * The locale program now provides detailed information about the installed
299 locales. While
301 locale -a
303 only lists the names of the supported locales
305 locale -a --verbose
307 provides details such as country, language, and codeset name.
308 Contributed by Ulrich Drepper.
309 \f
310 Version 2.2.1
312 * The gencat program now parses the input file according to the charset
313 selected by the LC_CTYPE category. This is important for stateful
314 character sets. To make generating catalogs easier there is a way
315 to overwrite the charset selected by the locale: before the first
316 message or $ quote line the catalog can contain a line like
318 $ codeset=ISO-8859-2
320 to select the charset (ISO-8859-2 in this case).
322 Implemented by Shinya Hanataka and Ulrich Drepper.
324 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
325 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
326 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
328 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
329 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
331 * The LANGUAGE environment variable is now ignored unless the locale is
332 changed from the default "C" locale.
334 * The usual bug fixes.
335 \f
336 Version 2.2
338 * Greg McGary added runtime support for bounds checking using gcc's
339 new -fbounded-pointers option. ix86 target is complete. PowerPC
340 is in progress.
342 * Thorsten Kukuk added secure mode support to nscd.
344 * The Berkeley db libraries have been removed.
346 Related, the nss_db module is now in a separate package since it
347 obviously requires a database library being available.
349 * Wide character I/O streams implemented by Ulrich Drepper.
351 * Functions from the extended socket API added by Ulrich Drepper.
353 * Functions feenableexcept and fedisableexcept to control the
354 behaviour of individual exceptions have been added by Andreas Jaeger.
356 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
358 * The resolver code has been updated from bind 8.2.3-T5B which supports
359 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
360 and Mark Kettenis.
362 This change could in some situations effect backward compatibility. Since
363 now `_res' is a thread-local instead of a global variable, modifying it
364 in one thread does not have any effect in other threads.
366 The resolver library was also extended to allow IPv6 as the transport
367 protocol for the requests. This work was done by Stig Venaas.
369 * Compatibility code for K&R C compilers has been removed from the
370 header files. A ISO C compiler is needed to use the library
371 (conforming to either C89 or C99 standard).
373 * Complete rewrite of the localedef program to support multibyte character
374 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
375 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
376 Implemented by Ulrich Drepper.
378 Bruno Haible significantly improved the generation and use of the data
379 structures for the wide character tables.
381 * Plural handling in gettext implemented by Ulrich Drepper.
383 * The utmp daemon has been removed.
385 * The port to MIPS-Linux has been finished by Andreas Jaeger.
387 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
388 and Yutaka Niibe.
390 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
392 * POSIX barriers implemented by Kaz Kylheku.
394 * POSIX spawn function family implemented by Ulrich Drepper.
396 * POSIX spinlocks are now available.
398 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
400 * the configure option --enable-kernel=X.Y.Z allows to strip out
401 compatibility for kernel versions before X.Y.Z. This is currently only
402 implemented for Linux.
404 * the sockaddr_in6 structure changed. The IPv6 working group added a new
405 field sin6_scope_id. This means that all programs using IPv6 should be
406 recompiled. Don't expect binary compatibility with previous glibc
407 versions.
409 * various conversion modules for IBM character sets contributed by
410 Masahide Washizawa.
412 * IA-64 port by Jes Sorensen and HJ Lu.
414 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
415 Compiling the GNU C Library for Linux/ia64
416 ******************************************
418 Please refer to the file INSTALL in the same directory as you found
419 this file for general information about configuring and compiling
420 glibc.
422 For general inquiries about glibc under Linux/ia64 please use the
423 following mailing list linux-ia64@linuxia64.org or one of the relevant
424 glibc mailing lists.
426 Recommended Tools for Compilation
427 =================================
429 In order for glibc-2.2 to build correctly on the ia64 you need at
430 least the following versions of the GNU tools (the :
432 * The Cygnus toolchain snapshot for the ia64 as of August 4
433 including the provided set of patches. It is however recommend
434 you use the October 24 toolchain snapshot or a more recent version.
436 OR alternatively you can try the following (the Cygnus toolchain is
437 the recommended solution):
439 * GCC and binutils, GAS and GNU LD out of CVS from
440 sources.redhat.com as of August 28, 2000 or later. The CVS tree
441 may require special patches to work properly on the ia64.
443 Configuring and compiling GNU Libc for Linux/ia64
444 =================================================
446 The library requires Linux kernel version 2.4.0-test4-000728 or
447 later to funtion properly. Besides that it support for debug libraries
448 is currently untested. Hence the following options
449 are required for configuring the library:
451 --disable-debug --enable-kernel=2.4.0
453 It is also important that you make sure the library picks up the
454 appropriate kernel header files, if you do not have recent enough
455 kernel headers in /usr/src/linux/include, you should use the
456 --with-headers=<path> option to specify the location.
458 As an example I personally use the following options to configure
459 the library:
461 --disable-debug
462 --disable-cvs
463 --enable-kernel=2.4.0
464 --host=ia64-linux
465 --enable-add-ons=yes
466 --prefix=/usr
467 --with-headers=/home/jes/linux/include
470 Good luck
472 Jes Sorensen <jes@linuxcare.com>,
473 November 14th, 2000
474 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
475 \f
476 Version 2.1.3
478 * bug fixes
480 \f
481 Version 2.1.2
483 * bug fixes
485 \f
486 Version 2.1.1
488 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
490 * New xdr functions are added; some rpc functions are now 64bit clean.
492 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
494 * Fixed known incompatibilities with glibc 2.0.
496 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
498 * Optimized a number of functions (especially the ELF dynamic loader).
500 * Update timezone data files.
502 * lots of charmaps corrections
504 * some new locale definitions and charmaps
506 \f
507 Version 2.1
509 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
510 conform to POSIX member type requirements. Symbol versions have been
511 adjusted as needed within the library, and for direct use by applications,
512 but there is potential for problems if third-party libraries use
513 struct timeval as part of their interface. This does not present
514 a problem for X and other "essential" system libraries.
516 * An additional locale model to support C++ Standard Library locale
517 model and probably more was implemented by Ulrich Drepper.
519 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
520 symbol level.
522 * Miles Bader provided the `argp' function family to support hierachical
523 command line argument parsing, layered on top of getopt.
525 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
527 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
528 numbers.
530 * scanf recognizes the %a and %A format for scanning floating point numbers.
532 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
533 information and interfaces for the available integer types.
535 * about 130 new math functions were added to implement the ISO C9x math
536 library.
538 * the new header <complex.h> contains definitions of the complex math
539 functions from ISO C 9X.
541 * the new header <tgmath.h> defines generic macros to use complex or
542 real valued functions.
544 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
546 * Andreas Jaeger provided a test suite for the math library.
548 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
550 * Ulrich Drepper added character set conversion functions (iconv).
552 * Optimized string functions have been added.
554 * The localedata addon is now part of glibc.
556 * An implementation of profiling shared libraries was added by Ulrich Drepper.
558 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
559 daemon for NSS (nscd).
561 Missing a better place here are some numbers on improvements. Under
562 Linux 2.1.125 un-tar-ing the kernel sources takes
564 user system wall
566 using local files 12.19s 6.88s 22.91s
568 using NIS 13.92s 8.91s 26.34s
570 using NIS & nscd 10.37s 7.34s 25.30s
572 using NIS+ 27.57s 30.37s 640.46s
574 using NIS+ & nscd 10.25s 7.83s 26.51s
576 using NIS & old nscd [1] 13.83s 8.32s 29.60s
578 Keep in mind that non-namelookup related operations dominate above times.
579 It was just a common complain that using NIS+ unpacking the kernel is
580 horribly slow.
582 [1] The old nscd implementation is not available anymore since it was
583 distributed with glibc up to version 2.0.98 and thus is now replaced.
585 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
587 * Mark Kettenis provided a Hesiod NSS module.
589 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
590 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
592 * rcmd can now handle netgroups (Dick Streefland).
594 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
595 Bambrough.
597 * Support for the IPv6 protocol has been added to the socket API, as per the
598 latest draft standards.
600 * Support for Linux 2.2 has been added.
602 * Interface changes relative to the latest 2.0.x release:
603 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
604 addseverity NEW: Unix98
605 alphasort64 NEW: LFS
606 argp_err_exit_status NEW: argp, GNU ext
607 argp_error NEW: argp, GNU ext
608 argp_failure NEW: argp, GNU ext
609 argp_help NEW: argp, GNU ext
610 argp_parse NEW: argp, GNU ext
611 argp_program_bug_address NEW: argp, GNU ext
612 argp_program_version NEW: argp, GNU ext
613 argp_program_version_hook NEW: argp, GNU ext
614 argp_state_help NEW: argp, GNU ext
615 argp_usage NEW: argp, GNU ext
616 authdes_create NEW: Secure RPC
617 authdes_getucred NEW: Secure RPC
618 authdes_pk_create NEW: Secure RPC
619 backtrace NEW: GNU ext.
620 backtrace_symbols NEW: GNU ext.
621 backtrace_symbols_fd NEW: GNU ext.
622 cacos NEW: ISO C 9x
623 cacosf NEW: ISO C 9x
624 cacosh NEW: ISO C 9x
625 cacoshf NEW: ISO C 9x
626 cacoshl NEW: ISO C 9x
627 cacosl NEW: ISO C 9x
628 capget NEW: kernel
629 capset NEW: kernel
630 carg NEW: ISO C 9x
631 cargf NEW: ISO C 9x
632 cargl NEW: ISO C 9x
633 casin NEW: ISO C 9x
634 casinf NEW: ISO C 9x
635 casinh NEW: ISO C 9x
636 casinhf NEW: ISO C 9x
637 casinhl NEW: ISO C 9x
638 casinl NEW: ISO C 9x
639 catan NEW: ISO C 9x
640 catanf NEW: ISO C 9x
641 catanh NEW: ISO C 9x
642 catanhf NEW: ISO C 9x
643 catanhl NEW: ISO C 9x
644 catanl NEW: ISO C 9x
645 cbc_crypt NEW: Secure RPC
646 ccos NEW: ISO C 9x
647 ccosf NEW: ISO C 9x
648 ccosh NEW: ISO C 9x
649 ccoshf NEW: ISO C 9x
650 ccoshl NEW: ISO C 9x
651 ccosl NEW: ISO C 9x
652 cexp NEW: ISO C 9x
653 cexpf NEW: ISO C 9x
654 cexpl NEW: ISO C 9x
655 cimag NEW: ISO C 9x
656 cimagf NEW: ISO C 9x
657 cimagl NEW: ISO C 9x
658 clearerr_locked REMOVED
659 clntunix_create NEW: sunrpc ext
660 clog NEW: ISO C 9x
661 clog10 NEW: ISO C 9x
662 clog10f NEW: ISO C 9x
663 clog10l NEW: ISO C 9x
664 clogf NEW: ISO C 9x
665 clogl NEW: ISO C 9x
666 conj NEW: ISO C 9x
667 conjf NEW: ISO C 9x
668 conjl NEW: ISO C 9x
669 cpow NEW: ISO C 9x
670 cpowf NEW: ISO C 9x
671 cpowl NEW: ISO C 9x
672 cproj NEW: ISO C 9x
673 cprojf NEW: ISO C 9x
674 cprojl NEW: ISO C 9x
675 creal NEW: ISO C 9x
676 crealf NEW: ISO C 9x
677 creall NEW: ISO C 9x
678 creat64 NEW: LFS
679 csin NEW: ISO C 9x
680 csinf NEW: ISO C 9x
681 csinh NEW: ISO C 9x
682 csinhf NEW: ISO C 9x
683 csinhl NEW: ISO C 9x
684 csinl NEW: ISO C 9x
685 csqrt NEW: ISO C 9x
686 csqrtf NEW: ISO C 9x
687 csqrtl NEW: ISO C 9x
688 ctan NEW: ISO C 9x
689 ctanf NEW: ISO C 9x
690 ctanh NEW: ISO C 9x
691 ctanhf NEW: ISO C 9x
692 ctanhl NEW: ISO C 9x
693 ctanl NEW: ISO C 9x
694 des_setparity NEW: Secure RPC
695 ecb_crypt NEW: Secure RPC
696 endutxent NEW: Unix98
697 exp10 NEW: ISO C 9x
698 exp10f NEW: ISO C 9x
699 exp10l NEW: ISO C 9x
700 exp2 NEW: ISO C 9x
701 exp2f NEW: ISO C 9x
702 exp2l NEW: ISO C 9x
703 fattach NEW: STREAMS
704 fdetach NEW: STREAMS
705 fdim NEW: ISO C 9x
706 fdimf NEW: ISO C 9x
707 fdiml NEW: ISO C 9x
708 feclearexcept NEW: ISO C 9x
709 fegetenv NEW: ISO C 9x
710 fegetexceptflag NEW: ISO C 9x
711 fegetround NEW: ISO C 9x
712 feholdexcept NEW: ISO C 9x
713 feof_locked REMOVED
714 feraiseexcept NEW: ISO C 9x
715 ferror_locked REMOVED
716 fesetenv NEW: ISO C 9x
717 fesetexceptflag NEW: ISO C 9x
718 fesetround NEW: ISO C 9x
719 fetestexcept NEW: ISO C 9x
720 feupdateenv NEW: ISO C 9x
721 fflush_locked REMOVED
722 ffsl NEW: GNU ext.
723 ffsll NEW: GNU ext.
724 fgetpos64 NEW: LFS
725 fgets_unlocked NEW: GNU ext.
726 fileno_locked REMOVED
727 fma NEW: ISO C 9x
728 fmaf NEW: ISO C 9x
729 fmal NEW: ISO C 9x
730 fmax NEW: ISO C 9x
731 fmaxf NEW: ISO C 9x
732 fmaxl NEW: ISO C 9x
733 fmin NEW: ISO C 9x
734 fminf NEW: ISO C 9x
735 fminl NEW: ISO C 9x
736 fmtmsg NEW: Unix98
737 fopen64 NEW: LFS
738 fputc_locked REMOVED
739 fputs_unlocked NEW: GNU ext.
740 fread_unlocked NEW: GNU ext.
741 freopen64 NEW: LFS
742 fseeko NEW: Unix98
743 fsetpos64 NEW: LFS
744 fstatfs64 NEW: LFS
745 fstatvfs NEW: Unix98
746 fstatvfs64 NEW: LFS
747 ftello NEW: Unix98
748 ftello64 NEW: LFS
749 ftruncate64 NEW: LFS
750 ftw64 NEW: LFS
751 fwrite_unlocked NEW: GNU ext.
752 gai_strerror NEW: IPv6
753 gamma_r REMOVED
754 gammaf_r REMOVED
755 gammal_r REMOVED
756 getchar_locked REMOVED
757 getdate NEW: Unix98
758 getdate_err NEW: Unix98
759 getdate_r NEW: GNU ext.
760 getmsg NEW: STREAMS
761 getnameinfo NEW: IPv6
762 getnetname NEW: Secure RPC
763 getpmsg NEW: STREAMS
764 getpt NEW: Unix98 PTY
765 getrlimit64 NEW: LFS
766 getutxent NEW: Unix98
767 getutxid NEW: Unix98
768 getutxline NEW: Unix98
769 glob64 NEW: GNU ext.
770 globfree64 NEW: GNU ext.
771 gnu_get_libc_release NEW: GNU ext.
772 gnu_get_libc_version NEW: GNU ext.
773 grantpt NEW: Unix98 PTY
774 host2netname NEW: Secure RPC
775 iconv NEW: iconv
776 iconv_close NEW: iconv
777 iconv_open NEW: iconv
778 if_freenameindex NEW: IPv6
779 if_indextoname NEW: IPv6
780 if_nameindex NEW: IPv6
781 if_nametoindex NEW: IPv6
782 in6addr_any NEW: IPv6
783 in6addr_loopback NEW: IPv6
784 inet6_isipv4mapped NEW: IPv6
785 isastream NEW: STREAMS
786 iswblank NEW: GNU ext.
787 key_decryptsession NEW: Secure RPC
788 key_decryptsession_pk NEW: Secure RPC
789 key_encryptsession NEW: Secure RPC
790 key_encryptsession_pk NEW: Secure RPC
791 key_gendes NEW: Secure RPC
792 key_get_conv NEW: Secure RPC
793 key_secretkey_is_set NEW: Secure RPC
794 key_setnet NEW: Secure RPC
795 key_setsecret NEW: Secure RPC
796 llrint NEW: ISO C 9x
797 llrintf NEW: ISO C 9x
798 llrintl NEW: ISO C 9x
799 llround NEW: ISO C 9x
800 llroundf NEW: ISO C 9x
801 llroundl NEW: ISO C 9x
802 log2 NEW: ISO C 9x
803 log2f NEW: ISO C 9x
804 log2l NEW: ISO C 9x
805 lrint NEW: ISO C 9x
806 lrintf NEW: ISO C 9x
807 lrintl NEW: ISO C 9x
808 lround NEW: ISO C 9x
809 lroundf NEW: ISO C 9x
810 lroundl NEW: ISO C 9x
811 lseek64 NEW: LFS
812 makecontext NEW: Unix98
813 mempcpy NEW: GNU ext.
814 mmap64 NEW: LFS
815 moncontrol REMOVED
816 modify_ldt NEW: kernel
817 nan NEW: ISO C 9x
818 nanf NEW: ISO C 9x
819 nanl NEW: ISO C 9x
820 nearbyint NEW: ISO C 9x
821 nearbyintf NEW: ISO C 9x
822 nearbyintl NEW: ISO C 9x
823 netname2host NEW: Secure RPC
824 netname2user NEW: Secure RPC
825 nexttoward NEW: ISO C 9x
826 nexttowardf NEW: ISO C 9x
827 nexttowardl NEW: ISO C 9x
828 nftw NEW: Unix98
829 nftw64 NEW: LFS
830 open64 NEW: LFS
831 passwd2des NEW: Secure RPC
832 pow10 NEW: GNU ext.
833 pow10f NEW: GNU ext.
834 pow10l NEW: GNU ext.
835 pread NEW: Unix98
836 pread64 NEW: LFS
837 printf_size NEW: GNU ext.
838 printf_size_info NEW: GNU ext.
839 profil_counter REMOVED
840 pthread_mutexattr_getkind_np REPLACED
841 pthread_mutexattr_setkind_np REPLACED
842 ptsname NEW: Unix98 PTY
843 ptsname_r NEW: Unix98 PTY
844 putc_locked REMOVED
845 putchar_locked REMOVED
846 putgrent NEW: GNU ext.
847 putmsg NEW: STREAMS
848 putpmsg NEW: STREAMS
849 pututxline NEW: Unix98
850 pwrite NEW: Unix98
851 pwrite64 NEW: LFS
852 readdir64 NEW: LFS
853 readdir64_r NEW: LFS
854 remquo NEW: ISO C 9x
855 remquof NEW: ISO C 9x
856 remquol NEW: ISO C 9x
857 round NEW: ISO C 9x
858 roundf NEW: ISO C 9x
859 roundl NEW: ISO C 9x
860 rtime NEW: GNU ext.
861 scalbln NEW: ISO C 9x
862 scalblnf NEW: ISO C 9x
863 scalblnl NEW: ISO C 9x
864 scandir64 NEW: LFS
865 sendfile NEW: kernel
866 setcontext NEW: Unix98
867 setrlimit64 NEW: LFS
868 setutxent NEW: Unix98
869 sighold NEW: Unix98
870 sigignore NEW: Unix98
871 sigqueue NEW: POSIX.1b
872 sigrelse NEW: Unix98
873 sigset NEW: POSIX.1b
874 sigtimedwait NEW: POSIX.1b
875 sigwaitinfo NEW: POSIX.1b
876 sincos NEW: GNU ext.
877 sincosf NEW: GNU ext.
878 sincosl NEW: GNU ext.
879 statfs64 NEW: LFS
880 statvfs NEW: Unix98
881 statvfs64 NEW: LFS
882 strcasestr NEW: GNU ext.
883 strtoimax NEW: ISO C 9x
884 strtoumax NEW: ISO C 9x
885 strverscmp NEW: GNU ext.
886 svcauthdes_stats NEW: Secure RPC
887 svcunix_create NEW: sunrpc etx
888 svcunixfd_create NEW: sunrpc ext
889 swapcontext NEW: Unix98
890 tcgetsid NEW: Unix98 PTY
891 tdestroy NEW: GNU ext.
892 tgamma NEW: ISO C 9x
893 tgammaf NEW: ISO C 9x
894 tgammal NEW: ISO C 9x
895 tmpfile64 NEW: LFS
896 trunc NEW: ISO C 9x
897 truncate64 NEW: LFS
898 truncf NEW: ISO C 9x
899 truncl NEW: ISO C 9x
900 umount2 NEW: kernel
901 unlockpt NEW: Unix98 PTY
902 updwtmpx NEW: Unix98
903 user2netname NEW: Secure RPC
904 utmpxname NEW: Unix98
905 versionsort NEW: GNU ext.
906 versionsort64 NEW: GNU ext.
907 waitid NEW: Unix98
908 wcscasecmp NEW: GNU ext.
909 wcsncasecmp NEW: GNU ext.
910 wcsnlen NEW: GNU ext.
911 wcstoimax NEW: ISO C 9x
912 wcstoll NEW: ISO C 9x
913 wcstoull NEW: ISO C 9x
914 wcstoumax NEW: ISO C 9x
915 wcswcs NEW: Unix98
916 wordexp NEW: POSIX.2
917 wordfree NEW: POSIX.2
918 write_profiling REMOVED
919 xdecrypt NEW: Secure RPC
920 xdr_authdes_cred NEW: Secure RPC
921 xdr_authdes_verf NEW: Secure RPC
922 xdr_cryptkeyarg NEW: Secure RPC
923 xdr_cryptkeyarg2 NEW: Secure RPC
924 xdr_cryptkeyres NEW: Secure RPC
925 xdr_getcredres NEW: Secure RPC
926 xdr_key_netstarg NEW: Secure RPC
927 xdr_key_netstres NEW: Secure RPC
928 xdr_keybuf NEW: Secure RPC
929 xdr_keystatus NEW: Secure RPC
930 xdr_netnamestr NEW: Secure RPC
931 xdr_sizeof NEW: Secure RPC
932 xdr_unixcred NEW: sunrpc ext
933 xencrypt NEW: Secure RPC
934 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
935 \f
936 Version 2.0.6
938 * more bug fixes
940 \f
941 Version 2.0.5
943 * more bug fixes
945 * inet_ntoa is thread-safe
947 * updwtmp is moved from libutil to libc
949 * rewrite of cbrt function
951 * update of timezone data
952 \f
953 Version 2.0.4
955 * more bug fixes
956 \f
957 Version 2.0.3
959 * more bug fixes
960 \f
961 Version 2.0.2
963 * more bug fixes
965 * add atoll function
967 * fix complex problems in Berkeley DB code
969 * fix math functions
970 \f
971 Version 2.0.1
973 * fixed lots of header problems (especially Linux/GNU specific)
975 * dynamic loader preserves all registers
977 * Roland McGrath provided support for handling of auxiliary objects in
978 the ELF dynamic loader.
980 * support for parallel builds is improved
981 \f
982 Version 2.0
984 * GNU extensions are no longer declared by default. To enable them you
985 must define the macro `_GNU_SOURCE' in your program or compile with
986 `-D_GNU_SOURCE'.
988 * The library has changed from using GNU ld symbol aliases to using weak
989 symbols where available. The ELF object file format supports weak
990 symbols; GNU ld also supports weak symbols in the a.out format. (There
991 is also now support for other GNU ld extensions in ELF. Use the
992 `--with-elf' option to configure to indicate you have ELF, and
993 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
994 of many files which contained only symbol aliases, reducing the size of
995 the source and the compiled library; many other files were renamed to
996 less cryptic names previously occupied by the symbol alias files.
997 There is a new header file <elf.h> for programs which operate on
998 files in the ELF format.
1000 * Converted to Autoconf version 2, so `configure' has more options.
1001 Run `configure --help' to see the details.
1003 * The library can now be configured to build profiling, highly-optimized
1004 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1005 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1006 `configure' enable building these extra libraries. The shared library is
1007 built by default when using both ELF and GNU ld. When shared libraries
1008 are enabled, the new library `-ldl' is available for arbitrary run-time
1009 loading of shared objects; its interface is defined in <dlfcn.h>. The
1010 new header file <link.h> gives access to the internals of the run-time
1011 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1012 application of same name on other systems and it provides information
1013 about dynamically linked binaries.
1015 * The C library now provides the run-time support code for profiling
1016 executables compiled with `-pg'. Programs can control the profiling code
1017 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1018 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1019 the support for this file format was contributed by David Mosberger-Tang.
1021 * The math code has been replaced with a math library based on fdlibm from
1022 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1023 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1024 functions. The math functions now reside in a separate library, so
1025 programs using them will need to use `-lm' their linking commands.
1027 * John C. Bowman contributed optimized ix87 assembler inline functions.
1029 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1030 mechanism similar to that found in Solaris 2. This is now used for the
1031 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1032 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1033 file controls what services are used for each individual database. This
1034 works by loading shared libraries with names specified in `nsswitch.conf',
1035 so service modules can be changed or added at any time without even
1036 relinking any program. Currently there are the file, db, and NIS based
1037 NSS services available.
1039 * The new functions `strtoq' and `strtouq' parse integer values from
1040 strings, like `strtol' and `strtoul', but they return `long long int' and
1041 `unsigned long long int' values, respectively (64-bit quantities).
1043 * The new functions `strtof' and `strtold' parse floating-point values from
1044 strings, like `strtod', but they return `float' and `long double' values,
1045 respectively (on some machines `double' and `long double' are the same).
1047 * Ulrich Drepper has contributed new implementations of the floating-point
1048 printing and reading code used in the `printf' family of functions and
1049 `strtod', `strtof', and `strtold'. These new functions are perfectly
1050 accurate, and much faster than the old ones.
1052 * The implementation of the POSIX locale model was completely rewritten by
1053 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1054 to compile the POSIX locale definition.
1056 * The former dummy implementations of the strcoll and strxfrm function are
1057 now replaced by fully functional code contributed by Ulrich Drepper. The
1058 collation information comes from the POSIX locale definitions.
1060 * The new header <langinfo.h> defines an interface for accessing
1061 various locale-dependent data (using the locale chosen with `setlocale').
1063 * Ulrich Drepper has contributed a new suite of functions for operation on
1064 wide-character and multibyte-character strings, in <wchar.h>;
1065 and classification and case conversion of wide characters, in <wctype.h>.
1066 These new functions are conforming to the ISO C, Amendement 1 specification.
1068 * There is now a second implementation of the standard I/O library available.
1069 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1070 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1072 * You can now use positional parameter specifications in format strings
1073 for the `printf' and `scanf' families of functions. For example,
1074 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1075 ``Number 6, Mr Jones''. This is mainly useful when providing different
1076 format strings for different languages, whose grammars may dictate
1077 different orderings of the values being printed. To support this
1078 feature, the interface for `register_printf_handler' has changed; see
1079 the header file <printf.h> for details.
1081 * The `printf' and `scanf' families of functions now understand a new
1082 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1083 to group numbers as indicated by the locale; for `scanf' and friends, this
1084 says to accept as valid only a number with all the proper grouping
1085 separators in the right places. In the default "C" locale, numbers are
1086 not grouped; but locales for specific countries will define the usual
1087 conventions (i.e. separate thousands with `,' in the US locale).
1089 * The pgrp functions have been regularized, slightly incompatibly but much
1090 less confusingly. The core functions are now `getpgid' and `setpgid',
1091 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1092 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1093 provided for compatibility. There is no longer an incompatible `getpgrp'
1094 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1096 * The new header file <fts.h> and suite of functions simplify programs that
1097 operate on directory trees. This code comes from 4.4 BSD.
1099 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1100 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1101 NSS scheme used in glibc.
1103 * There is a new malloc debugging hook `__memalign_hook'.
1105 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1106 `unsigned int' in <sys/types.h>. These are for compatibility only and
1107 their use is discouraged.
1109 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1110 done differently, so that it works even without GNU ld.
1112 * New function `euidaccess' checks allowed access to a file like `access',
1113 but using the effective IDs instead of the real IDs.
1115 * The time zone data files have been updated for the latest and greatest
1116 local time conventions of the countries of the world.
1118 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1119 see <dirent.h>.
1121 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1122 for formatting floating-point numbers. They are provided only for
1123 compatibility; new programs should use `sprintf' instead. There are
1124 also equivalent function for the `long double' floating-point type and
1125 all functions also exist in a reentrant form.
1127 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1128 functions for maintaining the login-record files (primarily of use to
1129 system programs such as `login'), and convenient functions for
1130 allocating and initializing a pseudo-terminal (pty) device.
1132 * Ulrich Drepper has contributed new support for System V style
1133 shared memory and IPC on systems that support it.
1135 * Ulrich Drepper has contributed several miscellaneous new functions found
1136 in System V: The `hsearch' family of functions provide an effective
1137 implementation of hash tables; `a64l' and `l64a' provide a very simple
1138 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1139 number generator.
1141 * Ulrich Drepper has contributed new reentrant counterparts for the
1142 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1144 * Ulrich Drepper has contributed new, highly-optimized versions of several
1145 string functions for the i486/Pentium family of processors.
1147 * Ulrich Drepper has updated the Linux-specific code, based largely
1148 on work done in Hongjiu Lu's version of GNU libc for Linux.
1149 The GNU library now supports Linux versions 2.0.10 and later,
1150 using the ELF object file format (i[3456]86-*-linux).
1152 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1154 * David Mosberger-Tang and Richard Henderson have ported the C library
1155 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1156 dynamic linking support for ELF/Alpha.
1158 * Richard Henderson contributed several Alpha optimized assembler function
1159 for arithmetic and string handling.
1161 * Ulrich Drepper has contributed a new set of message catalog functions to
1162 support multiple languages using the <libintl.h> interface, for use with
1163 his new package GNU gettext. Translation volunteers have contributed
1164 catalogs of the library's messages in Spanish, German, and Korean.
1166 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1167 program and the `catgets' function for reading the catalog files it
1168 creates. (The <libintl.h> interface is preferred; we include the
1169 <nl_types.h> interface using `catgets' only for source compatibility with
1170 programs already written to use it.)
1172 * New header file <values.h> gives SVID-compatible names for <limits.h>
1173 constants.
1175 * Various new macros, declarations, and small header files for compatibility
1176 with 4.4 BSD.
1178 * New function `group_member' is a convenient way to check if a process has
1179 a given effective group ID.
1181 * When using GCC 2.7 and later, the socket functions are now declared in a
1182 special way so that passing an argument of type `struct sockaddr_in *',
1183 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1184 `struct sockaddr *' type, does not generate a type-clash warning.
1186 * New function `error' declared in header file <error.h> is a convenient
1187 function for printing error messages and optionally exiting; this is the
1188 canonical function used in GNU programs. The new functions `err', `warn',
1189 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1190 doing the same thing.
1192 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1193 POSIX.2 `glob' function to do ~ and {...} expansion.
1195 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1196 `clearenv' which is used in POSIX.9 is also available.
1198 * New function `getsid' returns session ID number on systems that support it.
1200 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1201 files <db.h> and <mpool.h> provide a rich set of functions for several
1202 types of simple databases stored in memory and in files, and <ndbm.h> is
1203 an old `ndbm'-compatible interface using the `db' functions. Link with
1204 `-ldb' to get these functions.
1206 * New macro `strdupa' copies a string like `strdup', but uses local stack
1207 space from `alloca' instead of dynamic heap space from `malloc'.
1209 * New function `strnlen' is like `strlen' but searches only a given maximum
1210 number of characters for the null terminator. `stpncpy', `strndup' and
1211 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1212 function.
1214 * New function `statfs' in header <sys/statfs.h>.
1216 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1217 provide convenient functions for operating on blocks of null-terminated
1218 strings.
1220 * A new suite of functions in <utmp.h> handle all the details of reading
1221 and writing the utmp file.
1223 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1224 Thorsten Kukuk.
1226 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1227 completely POSIX compliant and also implemented the extended functionality
1228 to handle alternate digit representation and alternate era date formats.
1230 * Ulrich Drepper provided an implementation of the `strptime' function
1231 defined in XPG4.2 which transforms a string into a `struct tm' value.
1233 * Paul Eggert provided the tzselect shell script as part of the timezone
1234 code. The shell script makes it easy to select the correct timezone
1235 specification.
1237 * The implementation of the malloc family of functions is completely replaced
1238 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1239 The implementation uses the mmap function (if available) and it is
1240 optimized for the use in multi threaded programs.
1242 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1243 functions. This new functionality is usable by specifying a special
1244 salt string and it is compatible with implementation on *BSD systems.
1246 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1247 `getsubopt' to handle second level command line options, `bsd_signal'
1248 to access BSD style `signal' functionality, the obsolete `regexp' style
1249 expression matcher.
1251 * the `lchown' function is available on system which support this
1252 functionality.
1254 * The implementation of the shadow password handling function was contributed
1255 by Ulrich Drepper.
1257 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1259 * POSIX.1g support was added. The <sys/select.h> header is available,
1260 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1261 implementation of `getaddrinfo'.
1262 \f
1263 Version 1.09
1265 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1267 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1268 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1270 * The new function `daemon' from 4.4 BSD is useful for server programs that
1271 want to put themselves in the background.
1273 * Joel Sherrill has contributed support for several standalone boards that
1274 run without an operating system.
1276 * `printf', `scanf' and friends now accept a `q' type modifier for long
1277 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1279 * All of the code taken from BSD (notably most of the math and networking
1280 routines) has been updated from the BSD 4.4-Lite release.
1282 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1284 * The new functions `getdomainname' and `setdomainname' fetch or change the
1285 YP/NIS domain name. These are system calls which exist on systems which
1286 have YP (aka NIS).
1288 * The time zone data files have been updated for the latest international
1289 conventions.
1291 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1292 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1293 \f
1294 Version 1.08
1296 * The C library now includes support for Sun RPC, from Sun's free
1297 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1298 are included. (There is still no support for YP.)
1300 * Tom Quinn has contributed a port of the C library to SGI machines running
1301 Irix 4 (mips-sgi-irix4).
1303 * The new `lockf' function is a simplified interface to the locking
1304 facilities of `fcntl', included for compatibility.
1306 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1308 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1310 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1311 compatibility.
1313 * The error message printed by `assert' for a failed assertion now includes
1314 the name of the program (if using GNU ld) and the name of the calling
1315 function (with versions of GCC that support this).
1317 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1319 * The library now includes the <sys/mman.h> header file and memory
1320 management functions `mmap', `munmap', `mprotect', `msync', and
1321 `madvise', on systems that support those facilities.
1323 * The interface for `mcheck' has changed slightly: the function called to
1324 abort the program when an allocation inconsistency is detected now takes
1325 an argument that indicates the type of failure. The new function
1326 `mprobe' lets you request a consistency check for a particular block at
1327 any time (checks are normally done only when you call `free' or `realloc'
1328 on a block).
1330 * It is now possible to easily cross-compile the C library, building on one
1331 system a library to run on another machine and/or operating system. All
1332 you need to do is set the variable `HOST_CC' in `configparms' to the
1333 native compiler for programs to run on the machine you are building on (a
1334 few generator programs are used on Unix systems); set `CC' to the
1335 cross-compiler.
1337 * The new function `fexecve' (only implemented on the GNU system) executes
1338 a program file given a file descriptor already open on the file.
1339 \f
1340 Version 1.07
1342 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1343 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1345 * You can set the variable `libprefix' in `configparms' to specify a prefix
1346 to be prepended to installed library files; this makes it easy to install
1347 the GNU C library to be linked as `-lgnuc' or whatever.
1349 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1350 copies a limited number of characters from a string, and returns the
1351 address of the last character written.
1353 * You no longer need to check for whether the installed `stddef.h' is
1354 compatible with the GNU C library. configure now checks for you.
1356 * You can now define a per-stream `fileno' function to convert the
1357 stream's cookie into an integral file descriptor.
1359 * ``malloc (0)'' no longer returns a null pointer. Instead, it
1360 allocates zero bytes of storage, and returns a unique pointer which
1361 you can pass to `realloc' or `free'. The behavior is undefined if
1362 you dereference this pointer.
1364 * The C library now runs on Sony NEWS m68k machines running either
1365 NewsOS 3 or NewsOS 4.
1367 * The new `syscall' function is a system-dependent primitive function
1368 for invoking system calls. It has the canonical behavior on Unix
1369 systems, including unreliable return values for some calls (such as
1370 `pipe', `fork' and `getppid').
1372 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
1373 to `EAGAIN', which is the preferred name. On systems whose kernels
1374 use two distinct codes, the C library now translates EWOULDBLOCK to
1375 EAGAIN in every system call function.
1376 \f
1377 Version 1.06
1379 * The GNU C Library Reference Manual is now distributed with the library.
1380 `make dvi' will produce a DVI file of the printed manual.
1381 `make info' will produce Info files that you can read on line using C-h i
1382 in Emacs or the `info' program.
1383 Please send comments on the manual to bug-glibc-manual@gnu.org.
1385 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
1387 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
1389 * Jason Merrill has contributed a port to the Sequent Symmetry running
1390 Dynix version 3 (i386-sequent-dynix).
1392 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
1393 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
1395 * New function `memory_warnings' lets you arrange to get warnings when
1396 malloc is running out of memory to allocate, like Emacs gives you.
1398 * The C library now contains the relocating allocator used in Emacs 19 for
1399 its editing buffers. This allocator (ralloc) minimizes allocation
1400 overhead and fragmentation by moving allocated regions around whenever it
1401 needs to. You always refer to a ralloc'd region with a "handle" (a
1402 pointer to a pointer--an object of type `void **').
1404 * There is a new `printf' format: `%m' gives you the string corresponding
1405 to the error code in `errno'.
1407 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
1408 or `%[' conversion, but instead of filling in a fixed-sized buffer you
1409 pass, the `a' modifier says to fill in a `char **' you pass with a
1410 malloc'd string.
1412 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
1413 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
1414 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
1416 * `mkstemp' is a traditional Unix function to atomically create and open a
1417 uniquely-named temporary file.
1418 \f
1419 Version 1.05
1421 * The standard location for the file that says what the local timezone is
1422 has changed again. It is now `/usr/local/etc/localtime' (or more
1423 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
1425 * The distribution no longer contains any files with names longer than 14
1426 characters.
1428 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
1429 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
1431 * New functions `ttyslot' and `syslog' from 4.4 BSD.
1432 \f
1433 Version 1.04
1435 * The configuration process has changed quite a bit. The `configure'
1436 script is now used just like the configuration scripts for other GNU
1437 packages. The `sysdeps' directory hierarchy is much rearranged.
1438 The file `INSTALL' explains the new scheme in detail.
1440 * The header files no longer need to be processed into ANSI C and
1441 traditional C versions. There is just one set of files to install, and
1442 it will work with ANSI or old C compilers (including `gcc -traditional').
1444 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
1445 MIPS DECStation running Ultrix 4.
1447 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
1448 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
1449 made itself into a shared library.
1451 * Yet further improved support for the i386, running 4.3 BSD-like systems
1452 (such as Mach 3 with the Unix single-server), or System V.
1454 * New function `strncasecmp' to do case-insensitive string comparison
1455 with limited length.
1457 * New function `strsep' is a reentrant alternative to `strtok'.
1459 * New functions `scandir' and `alphasort' for searching directories.
1461 * New function `setenv' is a better interface to `putenv'.
1463 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
1464 function for traversing a directory tree.
1466 * The GNU obstack package is now also part of the C library.
1467 The new function `open_obstack_stream' creates a stdio stream that
1468 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
1469 formatted output directly to an obstack.
1471 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
1472 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
1474 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
1476 * The new functions `strfry' and `memfrob' do mysterious and wonderful
1477 things to your strings.
1479 * There are some new test programs: test-fseek, testmb, and testrand.
1481 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
1482 These ports are not finished, but are a good starting place for really
1483 supporting those systems.
1485 * `/etc/localtime' is now the standard location for the file that says what
1486 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
1487 This follows the general principle that `/etc' is the place for all local
1488 configuration files.
1490 * The C library header files now use `extern "C"' when used by the C++
1491 compiler, so the C library should now work with C++ code.
1493 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
1494 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
1495 in <strings.h>.)
1497 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
1498 function which uses the `merge sort' algorithm, and is said to be
1499 significantly faster than the old GNU `qsort' function. Merge sort is
1500 now the standard `qsort' function. The new algorithm can require a lot
1501 of temporary storage; so, the old sorting function is called when the
1502 required storage is not available.
1504 * The C library now includes Michael Glad's Ultra Fast Crypt, which
1505 provides the Unix `crypt' function, plus some other entry points.
1507 * The code and header files taken from 4.4 BSD have been updated with the
1508 latest files released from Berkeley.
1509 \f
1510 ----------------------------------------------------------------------
1511 Copyright information:
1513 Copyright (C) 1992-1999,2000,2001,2002 Free Software Foundation, Inc.
1515 Permission is granted to anyone to make or distribute verbatim copies
1516 of this document as received, in any medium, provided that the
1517 copyright notice and this permission notice are preserved,
1518 thus giving the recipient permission to redistribute in turn.
1520 Permission is granted to distribute modified versions
1521 of this document, or of portions of it,
1522 under the above conditions, provided also that they
1523 carry prominent notices stating who last changed them.
1524 \f
1525 Local variables:
1526 version-control: never
1527 End: