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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.
17 \f
18 Version 2.3.5
20 * The following bugs are resolved with this release:
22 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
23 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
24 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
25 777, 787, 821, 822, 823, 825
27 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
28 \f
29 Version 2.3.4
31 * Support for RFC 3678. Real implementations exist only for Linux so far.
32 Implemented by Ulrich Drepper.
34 * nscd can now cache entries persistently. Expiring entries are reloaded.
35 For speedups the cache can be shared in memory with client processes.
36 Implemented by Ulrich Drepper.
38 * nscd can now perform SELinux checks.
39 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
41 * getaddrinfo queries are now cached. Canonical name lookup is performed
42 efficiently.
43 Implemented by Ulrich Drepper.
45 * The nothrow function attribute is used when headers are used by gcc when
46 compiling C code. This can avoid significant amounts of exception
47 handling data.
49 * The malloc functions perform more error checking and are stricter when
50 it comes to reacting on errors. The default action is to terminate
51 the process after showing an error message. Implemented by Ulrich Drepper.
53 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
54 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
56 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
57 namespaces using the new function dlmopen(). This feature is of course,
58 like most other dynamic loading functionality, not available in statically
59 linked applications. Implemented by Ulrich Drepper.
61 * Low-overhead boundary checking variants of string and some stdio functions
62 were added. These are to be used in conjunction with a gcc patch by
63 Jakub Jelinek which adds calls to these functions if possible.
64 Implemented by Jakub Jelinek and Ulrich Drepper.
66 * Old code for several operating systems and machine architectures that
67 have not been in working condition in a long time have been removed from
68 the main source tree maintained by the GNU C Library's maintainers.
69 These files are now reside in the separate `ports' source module
70 that is usable as an add-on when building the library.
71 \f
72 Version 2.3.3
74 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
75 interrogate the dynamic linker, compatible with the Solaris interface.
77 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
78 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
80 * getifaddrs now uses the netlink interface on Linux to get its information.
81 Implemented by Thorsten Kukuk.
83 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
84 Implemented by Ulrich Drepper.
86 * support for non-executable stacks on x86 has been added. Changes mostly
87 by Roland McGrath.
89 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
90 and Ulrich Drepper.
92 * getaddrinfo now performs destination address selection according to
93 RFC 3484.
94 \f
95 Version 2.3.2
97 * Thread-safe interfaces for many functions that access locale data
98 were added in version 2.3, but these features were omitted from NEWS.
99 Many functions have variants with an `_l' suffix that take a `locale_t'
100 object as a parameter rather than consulting the current locale.
101 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
102 create and maintain `locale_t' objects. Additionally, the new function
103 `uselocale' sets "the current locale" (as used by functions not so
104 parameterized) set for an individual thread. These features were added
105 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
107 * The functions getresuid, getresgid, setresuid, and setresgid, which
108 have long been available on Linux, are now declared in <unistd.h>
109 and are now also available on the Hurd.
111 * ELF thread-local storage support (TLS) now works on x86-64.
113 * The new dynamic string token $LIB is expanded in shared library names.
114 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
116 * Aldy Hernandez contributed complete software floating point support for
117 PowerPC machines with no FPU.
119 * fexecve is implemented on Linux.
121 * The `btowc' function should work at least twice as fast due to
122 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
124 * With approriate thread add-ons cancelable functions are now implemented
125 in libc.so as well. No need to call the function in libpthread. This
126 change allowed to finally disable the incorrect and expensive handling
127 of weak definition in ld.so.
129 * Yet more PLT entries in libc.so have been removed. We finally arrived
130 at the bare minimum. Startup times improved appropriately.
132 * Support for the new Linux/x86 system call interface was added. The
133 AT_SYSINFO auxiliary vector entry is recognized and handled.
134 \f
135 Version 2.3
137 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
138 charsets.
140 * iconv (the program and the interface) now accepts empty names (excluding
141 options like //TRANSLIT) to mean "use charset of current locale".
143 * localedef can now transliterate characters in strings which are not in
144 the provided charmap. The information from the input locale is used.
146 * Prelinking support was added for ELF targets. This requires additional
147 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
149 * Read-only stdio streams now use mmap to speed up operation by eliminating
150 copying and buffer underflows. To use add 'm' to the mode string of
151 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
153 * The malloc functions were completely rewritten by Wolfram Gloger based
154 on Doug Lea's malloc-2.7.0.c.
156 * Isamu Hasegawa contributed a completely new and POSIX-conformant
157 implementation of regex.
159 * Bruno Haible upgraded the iconv and locale implementation to support
160 Unicode 3.2.
162 * Contents of the LC_* and LANG environment variables in the CEN style are
163 not recognized anymore. It never was used. Change by Ulrich Drepper.
165 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
166 thread-local storage (TLS) ABI on some platforms.
167 Changes by Ulrich Drepper. SH support by Kaz Kojima.
169 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
170 EUC-JISX0213, and TSCII.
172 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
173 BSD-compatible interface for getting all network interface addresses.
174 Implementation for IPv4 by Roland McGrath.
176 * Loading of locale data is faster due to the introduction of a locale
177 archive. Implemented by Roland McGrath and Ulrich Drepper.
179 * Startup times are significantly reduced by not using exported functions
180 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
181 and Ulrich Drepper.
183 * Steven Munroe contributed a port to PowerPC64/Linux.
184 \f
185 Version 2.2.6
187 * The Hurd now uses the GNU libio implementation of stdio rather than the
188 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
190 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
191 with the same behavior as the Linux system call of the same name.
192 \f
193 Version 2.2.5
195 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
196 128-bit long double format.
198 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
199 IBM1161, and IBM1162 charsets.
201 * Andreas Jaeger contributed a port to x86-64/Linux.
203 * Peter Bruin contributed a port to PowerPC/Hurd.
205 * libc functions using I/O streams now can handle wide-oriented streams
206 as well.
208 * optimizations in the dynamic linker. Binaries created by recent binutils
209 versions start up quicker due to reduced time spent on relocations.
211 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
212 \f
213 Version 2.2.4
215 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
216 asinh, atanh, j0 for the 128-bit long double format.
218 * Bruno Haible updated all the code handling Unicode in some form to
219 support Unicode 3.1.
221 * Speed of regex for single-byte locales is back to previous levels.
222 Patch by Isamu Hasegawa.
224 * Alpha, SPARC, and IA-64 now also using floating stacks.
226 * Startup time of internationalized applications greatly improved through
227 iconv cache. Use iconvconfig to generate the cache file.
228 Contributed by Ulrich Drepper.
230 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
231 severe performance problems. Patch by David Mosberger.
233 * The Hurd port got a lot more functionality like AIO, various stdio
234 extensions, etc. Mainly done by Roland McGrath.
236 * mtrace can now lookup symbols in shared libraries.
237 \f
238 Version 2.2.3
240 * Intel's IA-64 math library is largely integrated. It provides fast and
241 accurate implementatations for most basic and standard math functions
242 in float, double, and long double format.
244 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
245 and asin for the 96-bit long double format and asin, log, tan for the
246 128-bit long double format.
248 * The beginning of a last-bit accurate math library by IBM Haifa were added.
249 The basic double functions exist today. Contributed by Abraham Ziv
250 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
251 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
253 * An asynchronous name lookup library was added. The interface is designed
254 after POSIX AIO. The proposal was circulated beforehand to get comments.
255 No negative ones came in. Implemented by Ulrich Drepper.
257 * Port to S390/64bit contributed by Martin Schwidefsky
258 <schwidefsky@de.ibm.com>.
260 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
261 of functions for Linux/IA-64.
263 * The RPC code is now thread safe. Threads can now use the same service
264 of different services at the same time. Patch by Eric Norum
265 <eric.norum@usask.ca> with some help by Ulrich Drepper.
267 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
268 family of functions for Linux/S390.
270 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
271 of functions for Linux/x86.
273 * Port to Linux/CRIS contributed by Axis Communications.
274 \f
275 Version 2.2.2
277 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
278 we can now check for namespace violations and missing declarations. The
279 result is that almost all headers are now Unix-compliant (as defined in
280 the upcoming XPG6). The negative side is that some programs might need
281 corrections, too, if they depend on the incorrect form of the headers in
282 previous versions which defined too many symbols and included too many
283 other headers.
285 * regex now handles multibyte character sets correctly.
286 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
288 * iconv (the program) does now conform to the upcoming XPG6 and handles
289 charmaps. Instead of the charset names the path of charmaps can be
290 provided and the conversion happens based on this data.
291 Contributed by Ulrich Drepper.
293 * The locale program now provides detailed information about the installed
294 locales. While
296 locale -a
298 only lists the names of the supported locales
300 locale -a --verbose
302 provides details such as country, language, and codeset name.
303 Contributed by Ulrich Drepper.
304 \f
305 Version 2.2.1
307 * The gencat program now parses the input file according to the charset
308 selected by the LC_CTYPE category. This is important for stateful
309 character sets. To make generating catalogs easier there is a way
310 to overwrite the charset selected by the locale: before the first
311 message or $ quote line the catalog can contain a line like
313 $ codeset=ISO-8859-2
315 to select the charset (ISO-8859-2 in this case).
317 Implemented by Shinya Hanataka and Ulrich Drepper.
319 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
320 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
321 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
323 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
324 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
326 * The LANGUAGE environment variable is now ignored unless the locale is
327 changed from the default "C" locale.
329 * The usual bug fixes.
330 \f
331 Version 2.2
333 * Greg McGary added runtime support for bounds checking using gcc's
334 new -fbounded-pointers option. ix86 target is complete. PowerPC
335 is in progress.
337 * Thorsten Kukuk added secure mode support to nscd.
339 * The Berkeley db libraries have been removed.
341 Related, the nss_db module is now in a separate package since it
342 obviously requires a database library being available.
344 * Wide character I/O streams implemented by Ulrich Drepper.
346 * Functions from the extended socket API added by Ulrich Drepper.
348 * Functions feenableexcept and fedisableexcept to control the
349 behaviour of individual exceptions have been added by Andreas Jaeger.
351 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
353 * The resolver code has been updated from bind 8.2.3-T5B which supports
354 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
355 and Mark Kettenis.
357 This change could in some situations effect backward compatibility. Since
358 now `_res' is a thread-local instead of a global variable, modifying it
359 in one thread does not have any effect in other threads.
361 The resolver library was also extended to allow IPv6 as the transport
362 protocol for the requests. This work was done by Stig Venaas.
364 * Compatibility code for K&R C compilers has been removed from the
365 header files. A ISO C compiler is needed to use the library
366 (conforming to either C89 or C99 standard).
368 * Complete rewrite of the localedef program to support multibyte character
369 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
370 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
371 Implemented by Ulrich Drepper.
373 Bruno Haible significantly improved the generation and use of the data
374 structures for the wide character tables.
376 * Plural handling in gettext implemented by Ulrich Drepper.
378 * The utmp daemon has been removed.
380 * The port to MIPS-Linux has been finished by Andreas Jaeger.
382 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
383 and Yutaka Niibe.
385 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
387 * POSIX barriers implemented by Kaz Kylheku.
389 * POSIX spawn function family implemented by Ulrich Drepper.
391 * POSIX spinlocks are now available.
393 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
395 * the configure option --enable-kernel=X.Y.Z allows to strip out
396 compatibility for kernel versions before X.Y.Z. This is currently only
397 implemented for Linux.
399 * the sockaddr_in6 structure changed. The IPv6 working group added a new
400 field sin6_scope_id. This means that all programs using IPv6 should be
401 recompiled. Don't expect binary compatibility with previous glibc
402 versions.
404 * various conversion modules for IBM character sets contributed by
405 Masahide Washizawa.
407 * IA-64 port by Jes Sorensen and HJ Lu.
409 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
410 Compiling the GNU C Library for Linux/ia64
411 ******************************************
413 Please refer to the file INSTALL in the same directory as you found
414 this file for general information about configuring and compiling
415 glibc.
417 For general inquiries about glibc under Linux/ia64 please use the
418 following mailing list linux-ia64@linuxia64.org or one of the relevant
419 glibc mailing lists.
421 Recommended Tools for Compilation
422 =================================
424 In order for glibc-2.2 to build correctly on the ia64 you need at
425 least the following versions of the GNU tools (the :
427 * The Cygnus toolchain snapshot for the ia64 as of August 4
428 including the provided set of patches. It is however recommend
429 you use the October 24 toolchain snapshot or a more recent version.
431 OR alternatively you can try the following (the Cygnus toolchain is
432 the recommended solution):
434 * GCC and binutils, GAS and GNU LD out of CVS from
435 sources.redhat.com as of August 28, 2000 or later. The CVS tree
436 may require special patches to work properly on the ia64.
438 Configuring and compiling GNU Libc for Linux/ia64
439 =================================================
441 The library requires Linux kernel version 2.4.0-test4-000728 or
442 later to funtion properly. Besides that it support for debug libraries
443 is currently untested. Hence the following options
444 are required for configuring the library:
446 --disable-debug --enable-kernel=2.4.0
448 It is also important that you make sure the library picks up the
449 appropriate kernel header files, if you do not have recent enough
450 kernel headers in /usr/src/linux/include, you should use the
451 --with-headers=<path> option to specify the location.
453 As an example I personally use the following options to configure
454 the library:
456 --disable-debug
457 --disable-cvs
458 --enable-kernel=2.4.0
459 --host=ia64-linux
460 --enable-add-ons=yes
461 --prefix=/usr
462 --with-headers=/home/jes/linux/include
465 Good luck
467 Jes Sorensen <jes@linuxcare.com>,
468 November 14th, 2000
469 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
470 \f
471 Version 2.1.3
473 * bug fixes
475 \f
476 Version 2.1.2
478 * bug fixes
480 \f
481 Version 2.1.1
483 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
485 * New xdr functions are added; some rpc functions are now 64bit clean.
487 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
489 * Fixed known incompatibilities with glibc 2.0.
491 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
493 * Optimized a number of functions (especially the ELF dynamic loader).
495 * Update timezone data files.
497 * lots of charmaps corrections
499 * some new locale definitions and charmaps
501 \f
502 Version 2.1
504 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
505 conform to POSIX member type requirements. Symbol versions have been
506 adjusted as needed within the library, and for direct use by applications,
507 but there is potential for problems if third-party libraries use
508 struct timeval as part of their interface. This does not present
509 a problem for X and other "essential" system libraries.
511 * An additional locale model to support C++ Standard Library locale
512 model and probably more was implemented by Ulrich Drepper.
514 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
515 symbol level.
517 * Miles Bader provided the `argp' function family to support hierachical
518 command line argument parsing, layered on top of getopt.
520 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
522 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
523 numbers.
525 * scanf recognizes the %a and %A format for scanning floating point numbers.
527 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
528 information and interfaces for the available integer types.
530 * about 130 new math functions were added to implement the ISO C9x math
531 library.
533 * the new header <complex.h> contains definitions of the complex math
534 functions from ISO C 9X.
536 * the new header <tgmath.h> defines generic macros to use complex or
537 real valued functions.
539 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
541 * Andreas Jaeger provided a test suite for the math library.
543 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
545 * Ulrich Drepper added character set conversion functions (iconv).
547 * Optimized string functions have been added.
549 * The localedata addon is now part of glibc.
551 * An implementation of profiling shared libraries was added by Ulrich Drepper.
553 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
554 daemon for NSS (nscd).
556 Missing a better place here are some numbers on improvements. Under
557 Linux 2.1.125 un-tar-ing the kernel sources takes
559 user system wall
561 using local files 12.19s 6.88s 22.91s
563 using NIS 13.92s 8.91s 26.34s
565 using NIS & nscd 10.37s 7.34s 25.30s
567 using NIS+ 27.57s 30.37s 640.46s
569 using NIS+ & nscd 10.25s 7.83s 26.51s
571 using NIS & old nscd [1] 13.83s 8.32s 29.60s
573 Keep in mind that non-namelookup related operations dominate above times.
574 It was just a common complain that using NIS+ unpacking the kernel is
575 horribly slow.
577 [1] The old nscd implementation is not available anymore since it was
578 distributed with glibc up to version 2.0.98 and thus is now replaced.
580 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
582 * Mark Kettenis provided a Hesiod NSS module.
584 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
585 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
587 * rcmd can now handle netgroups (Dick Streefland).
589 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
590 Bambrough.
592 * Support for the IPv6 protocol has been added to the socket API, as per the
593 latest draft standards.
595 * Support for Linux 2.2 has been added.
597 * Interface changes relative to the latest 2.0.x release:
598 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
599 addseverity NEW: Unix98
600 alphasort64 NEW: LFS
601 argp_err_exit_status NEW: argp, GNU ext
602 argp_error NEW: argp, GNU ext
603 argp_failure NEW: argp, GNU ext
604 argp_help NEW: argp, GNU ext
605 argp_parse NEW: argp, GNU ext
606 argp_program_bug_address NEW: argp, GNU ext
607 argp_program_version NEW: argp, GNU ext
608 argp_program_version_hook NEW: argp, GNU ext
609 argp_state_help NEW: argp, GNU ext
610 argp_usage NEW: argp, GNU ext
611 authdes_create NEW: Secure RPC
612 authdes_getucred NEW: Secure RPC
613 authdes_pk_create NEW: Secure RPC
614 backtrace NEW: GNU ext.
615 backtrace_symbols NEW: GNU ext.
616 backtrace_symbols_fd NEW: GNU ext.
617 cacos NEW: ISO C 9x
618 cacosf NEW: ISO C 9x
619 cacosh NEW: ISO C 9x
620 cacoshf NEW: ISO C 9x
621 cacoshl NEW: ISO C 9x
622 cacosl NEW: ISO C 9x
623 capget NEW: kernel
624 capset NEW: kernel
625 carg NEW: ISO C 9x
626 cargf NEW: ISO C 9x
627 cargl NEW: ISO C 9x
628 casin NEW: ISO C 9x
629 casinf NEW: ISO C 9x
630 casinh NEW: ISO C 9x
631 casinhf NEW: ISO C 9x
632 casinhl NEW: ISO C 9x
633 casinl NEW: ISO C 9x
634 catan NEW: ISO C 9x
635 catanf NEW: ISO C 9x
636 catanh NEW: ISO C 9x
637 catanhf NEW: ISO C 9x
638 catanhl NEW: ISO C 9x
639 catanl NEW: ISO C 9x
640 cbc_crypt NEW: Secure RPC
641 ccos NEW: ISO C 9x
642 ccosf NEW: ISO C 9x
643 ccosh NEW: ISO C 9x
644 ccoshf NEW: ISO C 9x
645 ccoshl NEW: ISO C 9x
646 ccosl NEW: ISO C 9x
647 cexp NEW: ISO C 9x
648 cexpf NEW: ISO C 9x
649 cexpl NEW: ISO C 9x
650 cimag NEW: ISO C 9x
651 cimagf NEW: ISO C 9x
652 cimagl NEW: ISO C 9x
653 clearerr_locked REMOVED
654 clntunix_create NEW: sunrpc ext
655 clog NEW: ISO C 9x
656 clog10 NEW: ISO C 9x
657 clog10f NEW: ISO C 9x
658 clog10l NEW: ISO C 9x
659 clogf NEW: ISO C 9x
660 clogl NEW: ISO C 9x
661 conj NEW: ISO C 9x
662 conjf NEW: ISO C 9x
663 conjl NEW: ISO C 9x
664 cpow NEW: ISO C 9x
665 cpowf NEW: ISO C 9x
666 cpowl NEW: ISO C 9x
667 cproj NEW: ISO C 9x
668 cprojf NEW: ISO C 9x
669 cprojl NEW: ISO C 9x
670 creal NEW: ISO C 9x
671 crealf NEW: ISO C 9x
672 creall NEW: ISO C 9x
673 creat64 NEW: LFS
674 csin NEW: ISO C 9x
675 csinf NEW: ISO C 9x
676 csinh NEW: ISO C 9x
677 csinhf NEW: ISO C 9x
678 csinhl NEW: ISO C 9x
679 csinl NEW: ISO C 9x
680 csqrt NEW: ISO C 9x
681 csqrtf NEW: ISO C 9x
682 csqrtl NEW: ISO C 9x
683 ctan NEW: ISO C 9x
684 ctanf NEW: ISO C 9x
685 ctanh NEW: ISO C 9x
686 ctanhf NEW: ISO C 9x
687 ctanhl NEW: ISO C 9x
688 ctanl NEW: ISO C 9x
689 des_setparity NEW: Secure RPC
690 ecb_crypt NEW: Secure RPC
691 endutxent NEW: Unix98
692 exp10 NEW: ISO C 9x
693 exp10f NEW: ISO C 9x
694 exp10l NEW: ISO C 9x
695 exp2 NEW: ISO C 9x
696 exp2f NEW: ISO C 9x
697 exp2l NEW: ISO C 9x
698 fattach NEW: STREAMS
699 fdetach NEW: STREAMS
700 fdim NEW: ISO C 9x
701 fdimf NEW: ISO C 9x
702 fdiml NEW: ISO C 9x
703 feclearexcept NEW: ISO C 9x
704 fegetenv NEW: ISO C 9x
705 fegetexceptflag NEW: ISO C 9x
706 fegetround NEW: ISO C 9x
707 feholdexcept NEW: ISO C 9x
708 feof_locked REMOVED
709 feraiseexcept NEW: ISO C 9x
710 ferror_locked REMOVED
711 fesetenv NEW: ISO C 9x
712 fesetexceptflag NEW: ISO C 9x
713 fesetround NEW: ISO C 9x
714 fetestexcept NEW: ISO C 9x
715 feupdateenv NEW: ISO C 9x
716 fflush_locked REMOVED
717 ffsl NEW: GNU ext.
718 ffsll NEW: GNU ext.
719 fgetpos64 NEW: LFS
720 fgets_unlocked NEW: GNU ext.
721 fileno_locked REMOVED
722 fma NEW: ISO C 9x
723 fmaf NEW: ISO C 9x
724 fmal NEW: ISO C 9x
725 fmax NEW: ISO C 9x
726 fmaxf NEW: ISO C 9x
727 fmaxl NEW: ISO C 9x
728 fmin NEW: ISO C 9x
729 fminf NEW: ISO C 9x
730 fminl NEW: ISO C 9x
731 fmtmsg NEW: Unix98
732 fopen64 NEW: LFS
733 fputc_locked REMOVED
734 fputs_unlocked NEW: GNU ext.
735 fread_unlocked NEW: GNU ext.
736 freopen64 NEW: LFS
737 fseeko NEW: Unix98
738 fsetpos64 NEW: LFS
739 fstatfs64 NEW: LFS
740 fstatvfs NEW: Unix98
741 fstatvfs64 NEW: LFS
742 ftello NEW: Unix98
743 ftello64 NEW: LFS
744 ftruncate64 NEW: LFS
745 ftw64 NEW: LFS
746 fwrite_unlocked NEW: GNU ext.
747 gai_strerror NEW: IPv6
748 gamma_r REMOVED
749 gammaf_r REMOVED
750 gammal_r REMOVED
751 getchar_locked REMOVED
752 getdate NEW: Unix98
753 getdate_err NEW: Unix98
754 getdate_r NEW: GNU ext.
755 getmsg NEW: STREAMS
756 getnameinfo NEW: IPv6
757 getnetname NEW: Secure RPC
758 getpmsg NEW: STREAMS
759 getpt NEW: Unix98 PTY
760 getrlimit64 NEW: LFS
761 getutxent NEW: Unix98
762 getutxid NEW: Unix98
763 getutxline NEW: Unix98
764 glob64 NEW: GNU ext.
765 globfree64 NEW: GNU ext.
766 gnu_get_libc_release NEW: GNU ext.
767 gnu_get_libc_version NEW: GNU ext.
768 grantpt NEW: Unix98 PTY
769 host2netname NEW: Secure RPC
770 iconv NEW: iconv
771 iconv_close NEW: iconv
772 iconv_open NEW: iconv
773 if_freenameindex NEW: IPv6
774 if_indextoname NEW: IPv6
775 if_nameindex NEW: IPv6
776 if_nametoindex NEW: IPv6
777 in6addr_any NEW: IPv6
778 in6addr_loopback NEW: IPv6
779 inet6_isipv4mapped NEW: IPv6
780 isastream NEW: STREAMS
781 iswblank NEW: GNU ext.
782 key_decryptsession NEW: Secure RPC
783 key_decryptsession_pk NEW: Secure RPC
784 key_encryptsession NEW: Secure RPC
785 key_encryptsession_pk NEW: Secure RPC
786 key_gendes NEW: Secure RPC
787 key_get_conv NEW: Secure RPC
788 key_secretkey_is_set NEW: Secure RPC
789 key_setnet NEW: Secure RPC
790 key_setsecret NEW: Secure RPC
791 llrint NEW: ISO C 9x
792 llrintf NEW: ISO C 9x
793 llrintl NEW: ISO C 9x
794 llround NEW: ISO C 9x
795 llroundf NEW: ISO C 9x
796 llroundl NEW: ISO C 9x
797 log2 NEW: ISO C 9x
798 log2f NEW: ISO C 9x
799 log2l NEW: ISO C 9x
800 lrint NEW: ISO C 9x
801 lrintf NEW: ISO C 9x
802 lrintl NEW: ISO C 9x
803 lround NEW: ISO C 9x
804 lroundf NEW: ISO C 9x
805 lroundl NEW: ISO C 9x
806 lseek64 NEW: LFS
807 makecontext NEW: Unix98
808 mempcpy NEW: GNU ext.
809 mmap64 NEW: LFS
810 moncontrol REMOVED
811 modify_ldt NEW: kernel
812 nan NEW: ISO C 9x
813 nanf NEW: ISO C 9x
814 nanl NEW: ISO C 9x
815 nearbyint NEW: ISO C 9x
816 nearbyintf NEW: ISO C 9x
817 nearbyintl NEW: ISO C 9x
818 netname2host NEW: Secure RPC
819 netname2user NEW: Secure RPC
820 nexttoward NEW: ISO C 9x
821 nexttowardf NEW: ISO C 9x
822 nexttowardl NEW: ISO C 9x
823 nftw NEW: Unix98
824 nftw64 NEW: LFS
825 open64 NEW: LFS
826 passwd2des NEW: Secure RPC
827 pow10 NEW: GNU ext.
828 pow10f NEW: GNU ext.
829 pow10l NEW: GNU ext.
830 pread NEW: Unix98
831 pread64 NEW: LFS
832 printf_size NEW: GNU ext.
833 printf_size_info NEW: GNU ext.
834 profil_counter REMOVED
835 pthread_mutexattr_getkind_np REPLACED
836 pthread_mutexattr_setkind_np REPLACED
837 ptsname NEW: Unix98 PTY
838 ptsname_r NEW: Unix98 PTY
839 putc_locked REMOVED
840 putchar_locked REMOVED
841 putgrent NEW: GNU ext.
842 putmsg NEW: STREAMS
843 putpmsg NEW: STREAMS
844 pututxline NEW: Unix98
845 pwrite NEW: Unix98
846 pwrite64 NEW: LFS
847 readdir64 NEW: LFS
848 readdir64_r NEW: LFS
849 remquo NEW: ISO C 9x
850 remquof NEW: ISO C 9x
851 remquol NEW: ISO C 9x
852 round NEW: ISO C 9x
853 roundf NEW: ISO C 9x
854 roundl NEW: ISO C 9x
855 rtime NEW: GNU ext.
856 scalbln NEW: ISO C 9x
857 scalblnf NEW: ISO C 9x
858 scalblnl NEW: ISO C 9x
859 scandir64 NEW: LFS
860 sendfile NEW: kernel
861 setcontext NEW: Unix98
862 setrlimit64 NEW: LFS
863 setutxent NEW: Unix98
864 sighold NEW: Unix98
865 sigignore NEW: Unix98
866 sigqueue NEW: POSIX.1b
867 sigrelse NEW: Unix98
868 sigset NEW: POSIX.1b
869 sigtimedwait NEW: POSIX.1b
870 sigwaitinfo NEW: POSIX.1b
871 sincos NEW: GNU ext.
872 sincosf NEW: GNU ext.
873 sincosl NEW: GNU ext.
874 statfs64 NEW: LFS
875 statvfs NEW: Unix98
876 statvfs64 NEW: LFS
877 strcasestr NEW: GNU ext.
878 strtoimax NEW: ISO C 9x
879 strtoumax NEW: ISO C 9x
880 strverscmp NEW: GNU ext.
881 svcauthdes_stats NEW: Secure RPC
882 svcunix_create NEW: sunrpc etx
883 svcunixfd_create NEW: sunrpc ext
884 swapcontext NEW: Unix98
885 tcgetsid NEW: Unix98 PTY
886 tdestroy NEW: GNU ext.
887 tgamma NEW: ISO C 9x
888 tgammaf NEW: ISO C 9x
889 tgammal NEW: ISO C 9x
890 tmpfile64 NEW: LFS
891 trunc NEW: ISO C 9x
892 truncate64 NEW: LFS
893 truncf NEW: ISO C 9x
894 truncl NEW: ISO C 9x
895 umount2 NEW: kernel
896 unlockpt NEW: Unix98 PTY
897 updwtmpx NEW: Unix98
898 user2netname NEW: Secure RPC
899 utmpxname NEW: Unix98
900 versionsort NEW: GNU ext.
901 versionsort64 NEW: GNU ext.
902 waitid NEW: Unix98
903 wcscasecmp NEW: GNU ext.
904 wcsncasecmp NEW: GNU ext.
905 wcsnlen NEW: GNU ext.
906 wcstoimax NEW: ISO C 9x
907 wcstoll NEW: ISO C 9x
908 wcstoull NEW: ISO C 9x
909 wcstoumax NEW: ISO C 9x
910 wcswcs NEW: Unix98
911 wordexp NEW: POSIX.2
912 wordfree NEW: POSIX.2
913 write_profiling REMOVED
914 xdecrypt NEW: Secure RPC
915 xdr_authdes_cred NEW: Secure RPC
916 xdr_authdes_verf NEW: Secure RPC
917 xdr_cryptkeyarg NEW: Secure RPC
918 xdr_cryptkeyarg2 NEW: Secure RPC
919 xdr_cryptkeyres NEW: Secure RPC
920 xdr_getcredres NEW: Secure RPC
921 xdr_key_netstarg NEW: Secure RPC
922 xdr_key_netstres NEW: Secure RPC
923 xdr_keybuf NEW: Secure RPC
924 xdr_keystatus NEW: Secure RPC
925 xdr_netnamestr NEW: Secure RPC
926 xdr_sizeof NEW: Secure RPC
927 xdr_unixcred NEW: sunrpc ext
928 xencrypt NEW: Secure RPC
929 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
930 \f
931 Version 2.0.6
933 * more bug fixes
935 \f
936 Version 2.0.5
938 * more bug fixes
940 * inet_ntoa is thread-safe
942 * updwtmp is moved from libutil to libc
944 * rewrite of cbrt function
946 * update of timezone data
947 \f
948 Version 2.0.4
950 * more bug fixes
951 \f
952 Version 2.0.3
954 * more bug fixes
955 \f
956 Version 2.0.2
958 * more bug fixes
960 * add atoll function
962 * fix complex problems in Berkeley DB code
964 * fix math functions
965 \f
966 Version 2.0.1
968 * fixed lots of header problems (especially Linux/GNU specific)
970 * dynamic loader preserves all registers
972 * Roland McGrath provided support for handling of auxiliary objects in
973 the ELF dynamic loader.
975 * support for parallel builds is improved
976 \f
977 Version 2.0
979 * GNU extensions are no longer declared by default. To enable them you
980 must define the macro `_GNU_SOURCE' in your program or compile with
981 `-D_GNU_SOURCE'.
983 * The library has changed from using GNU ld symbol aliases to using weak
984 symbols where available. The ELF object file format supports weak
985 symbols; GNU ld also supports weak symbols in the a.out format. (There
986 is also now support for other GNU ld extensions in ELF. Use the
987 `--with-elf' option to configure to indicate you have ELF, and
988 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
989 of many files which contained only symbol aliases, reducing the size of
990 the source and the compiled library; many other files were renamed to
991 less cryptic names previously occupied by the symbol alias files.
992 There is a new header file <elf.h> for programs which operate on
993 files in the ELF format.
995 * Converted to Autoconf version 2, so `configure' has more options.
996 Run `configure --help' to see the details.
998 * The library can now be configured to build profiling, highly-optimized
999 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1000 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1001 `configure' enable building these extra libraries. The shared library is
1002 built by default when using both ELF and GNU ld. When shared libraries
1003 are enabled, the new library `-ldl' is available for arbitrary run-time
1004 loading of shared objects; its interface is defined in <dlfcn.h>. The
1005 new header file <link.h> gives access to the internals of the run-time
1006 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1007 application of same name on other systems and it provides information
1008 about dynamically linked binaries.
1010 * The C library now provides the run-time support code for profiling
1011 executables compiled with `-pg'. Programs can control the profiling code
1012 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1013 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1014 the support for this file format was contributed by David Mosberger-Tang.
1016 * The math code has been replaced with a math library based on fdlibm from
1017 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1018 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1019 functions. The math functions now reside in a separate library, so
1020 programs using them will need to use `-lm' their linking commands.
1022 * John C. Bowman contributed optimized ix87 assembler inline functions.
1024 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1025 mechanism similar to that found in Solaris 2. This is now used for the
1026 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1027 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1028 file controls what services are used for each individual database. This
1029 works by loading shared libraries with names specified in `nsswitch.conf',
1030 so service modules can be changed or added at any time without even
1031 relinking any program. Currently there are the file, db, and NIS based
1032 NSS services available.
1034 * The new functions `strtoq' and `strtouq' parse integer values from
1035 strings, like `strtol' and `strtoul', but they return `long long int' and
1036 `unsigned long long int' values, respectively (64-bit quantities).
1038 * The new functions `strtof' and `strtold' parse floating-point values from
1039 strings, like `strtod', but they return `float' and `long double' values,
1040 respectively (on some machines `double' and `long double' are the same).
1042 * Ulrich Drepper has contributed new implementations of the floating-point
1043 printing and reading code used in the `printf' family of functions and
1044 `strtod', `strtof', and `strtold'. These new functions are perfectly
1045 accurate, and much faster than the old ones.
1047 * The implementation of the POSIX locale model was completely rewritten by
1048 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1049 to compile the POSIX locale definition.
1051 * The former dummy implementations of the strcoll and strxfrm function are
1052 now replaced by fully functional code contributed by Ulrich Drepper. The
1053 collation information comes from the POSIX locale definitions.
1055 * The new header <langinfo.h> defines an interface for accessing
1056 various locale-dependent data (using the locale chosen with `setlocale').
1058 * Ulrich Drepper has contributed a new suite of functions for operation on
1059 wide-character and multibyte-character strings, in <wchar.h>;
1060 and classification and case conversion of wide characters, in <wctype.h>.
1061 These new functions are conforming to the ISO C, Amendement 1 specification.
1063 * There is now a second implementation of the standard I/O library available.
1064 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1065 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1067 * You can now use positional parameter specifications in format strings
1068 for the `printf' and `scanf' families of functions. For example,
1069 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1070 ``Number 6, Mr Jones''. This is mainly useful when providing different
1071 format strings for different languages, whose grammars may dictate
1072 different orderings of the values being printed. To support this
1073 feature, the interface for `register_printf_handler' has changed; see
1074 the header file <printf.h> for details.
1076 * The `printf' and `scanf' families of functions now understand a new
1077 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1078 to group numbers as indicated by the locale; for `scanf' and friends, this
1079 says to accept as valid only a number with all the proper grouping
1080 separators in the right places. In the default "C" locale, numbers are
1081 not grouped; but locales for specific countries will define the usual
1082 conventions (i.e. separate thousands with `,' in the US locale).
1084 * The pgrp functions have been regularized, slightly incompatibly but much
1085 less confusingly. The core functions are now `getpgid' and `setpgid',
1086 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1087 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1088 provided for compatibility. There is no longer an incompatible `getpgrp'
1089 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1091 * The new header file <fts.h> and suite of functions simplify programs that
1092 operate on directory trees. This code comes from 4.4 BSD.
1094 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1095 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1096 NSS scheme used in glibc.
1098 * There is a new malloc debugging hook `__memalign_hook'.
1100 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1101 `unsigned int' in <sys/types.h>. These are for compatibility only and
1102 their use is discouraged.
1104 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1105 done differently, so that it works even without GNU ld.
1107 * New function `euidaccess' checks allowed access to a file like `access',
1108 but using the effective IDs instead of the real IDs.
1110 * The time zone data files have been updated for the latest and greatest
1111 local time conventions of the countries of the world.
1113 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1114 see <dirent.h>.
1116 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1117 for formatting floating-point numbers. They are provided only for
1118 compatibility; new programs should use `sprintf' instead. There are
1119 also equivalent function for the `long double' floating-point type and
1120 all functions also exist in a reentrant form.
1122 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1123 functions for maintaining the login-record files (primarily of use to
1124 system programs such as `login'), and convenient functions for
1125 allocating and initializing a pseudo-terminal (pty) device.
1127 * Ulrich Drepper has contributed new support for System V style
1128 shared memory and IPC on systems that support it.
1130 * Ulrich Drepper has contributed several miscellaneous new functions found
1131 in System V: The `hsearch' family of functions provide an effective
1132 implementation of hash tables; `a64l' and `l64a' provide a very simple
1133 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1134 number generator.
1136 * Ulrich Drepper has contributed new reentrant counterparts for the
1137 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1139 * Ulrich Drepper has contributed new, highly-optimized versions of several
1140 string functions for the i486/Pentium family of processors.
1142 * Ulrich Drepper has updated the Linux-specific code, based largely
1143 on work done in Hongjiu Lu's version of GNU libc for Linux.
1144 The GNU library now supports Linux versions 2.0.10 and later,
1145 using the ELF object file format (i[3456]86-*-linux).
1147 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1149 * David Mosberger-Tang and Richard Henderson have ported the C library
1150 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1151 dynamic linking support for ELF/Alpha.
1153 * Richard Henderson contributed several Alpha optimized assembler function
1154 for arithmetic and string handling.
1156 * Ulrich Drepper has contributed a new set of message catalog functions to
1157 support multiple languages using the <libintl.h> interface, for use with
1158 his new package GNU gettext. Translation volunteers have contributed
1159 catalogs of the library's messages in Spanish, German, and Korean.
1161 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1162 program and the `catgets' function for reading the catalog files it
1163 creates. (The <libintl.h> interface is preferred; we include the
1164 <nl_types.h> interface using `catgets' only for source compatibility with
1165 programs already written to use it.)
1167 * New header file <values.h> gives SVID-compatible names for <limits.h>
1168 constants.
1170 * Various new macros, declarations, and small header files for compatibility
1171 with 4.4 BSD.
1173 * New function `group_member' is a convenient way to check if a process has
1174 a given effective group ID.
1176 * When using GCC 2.7 and later, the socket functions are now declared in a
1177 special way so that passing an argument of type `struct sockaddr_in *',
1178 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1179 `struct sockaddr *' type, does not generate a type-clash warning.
1181 * New function `error' declared in header file <error.h> is a convenient
1182 function for printing error messages and optionally exiting; this is the
1183 canonical function used in GNU programs. The new functions `err', `warn',
1184 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1185 doing the same thing.
1187 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1188 POSIX.2 `glob' function to do ~ and {...} expansion.
1190 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1191 `clearenv' which is used in POSIX.9 is also available.
1193 * New function `getsid' returns session ID number on systems that support it.
1195 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1196 files <db.h> and <mpool.h> provide a rich set of functions for several
1197 types of simple databases stored in memory and in files, and <ndbm.h> is
1198 an old `ndbm'-compatible interface using the `db' functions. Link with
1199 `-ldb' to get these functions.
1201 * New macro `strdupa' copies a string like `strdup', but uses local stack
1202 space from `alloca' instead of dynamic heap space from `malloc'.
1204 * New function `strnlen' is like `strlen' but searches only a given maximum
1205 number of characters for the null terminator. `stpncpy', `strndup' and
1206 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1207 function.
1209 * New function `statfs' in header <sys/statfs.h>.
1211 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1212 provide convenient functions for operating on blocks of null-terminated
1213 strings.
1215 * A new suite of functions in <utmp.h> handle all the details of reading
1216 and writing the utmp file.
1218 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1219 Thorsten Kukuk.
1221 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1222 completely POSIX compliant and also implemented the extended functionality
1223 to handle alternate digit representation and alternate era date formats.
1225 * Ulrich Drepper provided an implementation of the `strptime' function
1226 defined in XPG4.2 which transforms a string into a `struct tm' value.
1228 * Paul Eggert provided the tzselect shell script as part of the timezone
1229 code. The shell script makes it easy to select the correct timezone
1230 specification.
1232 * The implementation of the malloc family of functions is completely replaced
1233 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1234 The implementation uses the mmap function (if available) and it is
1235 optimized for the use in multi threaded programs.
1237 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1238 functions. This new functionality is usable by specifying a special
1239 salt string and it is compatible with implementation on *BSD systems.
1241 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1242 `getsubopt' to handle second level command line options, `bsd_signal'
1243 to access BSD style `signal' functionality, the obsolete `regexp' style
1244 expression matcher.
1246 * the `lchown' function is available on system which support this
1247 functionality.
1249 * The implementation of the shadow password handling function was contributed
1250 by Ulrich Drepper.
1252 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1254 * POSIX.1g support was added. The <sys/select.h> header is available,
1255 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1256 implementation of `getaddrinfo'.
1257 \f
1258 Version 1.09
1260 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1262 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1263 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1265 * The new function `daemon' from 4.4 BSD is useful for server programs that
1266 want to put themselves in the background.
1268 * Joel Sherrill has contributed support for several standalone boards that
1269 run without an operating system.
1271 * `printf', `scanf' and friends now accept a `q' type modifier for long
1272 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1274 * All of the code taken from BSD (notably most of the math and networking
1275 routines) has been updated from the BSD 4.4-Lite release.
1277 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1279 * The new functions `getdomainname' and `setdomainname' fetch or change the
1280 YP/NIS domain name. These are system calls which exist on systems which
1281 have YP (aka NIS).
1283 * The time zone data files have been updated for the latest international
1284 conventions.
1286 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1287 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1288 \f
1289 Version 1.08
1291 * The C library now includes support for Sun RPC, from Sun's free
1292 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1293 are included. (There is still no support for YP.)
1295 * Tom Quinn has contributed a port of the C library to SGI machines running
1296 Irix 4 (mips-sgi-irix4).
1298 * The new `lockf' function is a simplified interface to the locking
1299 facilities of `fcntl', included for compatibility.
1301 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1303 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1305 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1306 compatibility.
1308 * The error message printed by `assert' for a failed assertion now includes
1309 the name of the program (if using GNU ld) and the name of the calling
1310 function (with versions of GCC that support this).
1312 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1314 * The library now includes the <sys/mman.h> header file and memory
1315 management functions `mmap', `munmap', `mprotect', `msync', and
1316 `madvise', on systems that support those facilities.
1318 * The interface for `mcheck' has changed slightly: the function called to
1319 abort the program when an allocation inconsistency is detected now takes
1320 an argument that indicates the type of failure. The new function
1321 `mprobe' lets you request a consistency check for a particular block at
1322 any time (checks are normally done only when you call `free' or `realloc'
1323 on a block).
1325 * It is now possible to easily cross-compile the C library, building on one
1326 system a library to run on another machine and/or operating system. All
1327 you need to do is set the variable `HOST_CC' in `configparms' to the
1328 native compiler for programs to run on the machine you are building on (a
1329 few generator programs are used on Unix systems); set `CC' to the
1330 cross-compiler.
1332 * The new function `fexecve' (only implemented on the GNU system) executes
1333 a program file given a file descriptor already open on the file.
1334 \f
1335 Version 1.07
1337 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1338 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1340 * You can set the variable `libprefix' in `configparms' to specify a prefix
1341 to be prepended to installed library files; this makes it easy to install
1342 the GNU C library to be linked as `-lgnuc' or whatever.
1344 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1345 copies a limited number of characters from a string, and returns the
1346 address of the last character written.
1348 * You no longer need to check for whether the installed `stddef.h' is
1349 compatible with the GNU C library. configure now checks for you.
1351 * You can now define a per-stream `fileno' function to convert the
1352 stream's cookie into an integral file descriptor.
1354 * ``malloc (0)'' no longer returns a null pointer. Instead, it
1355 allocates zero bytes of storage, and returns a unique pointer which
1356 you can pass to `realloc' or `free'. The behavior is undefined if
1357 you dereference this pointer.
1359 * The C library now runs on Sony NEWS m68k machines running either
1360 NewsOS 3 or NewsOS 4.
1362 * The new `syscall' function is a system-dependent primitive function
1363 for invoking system calls. It has the canonical behavior on Unix
1364 systems, including unreliable return values for some calls (such as
1365 `pipe', `fork' and `getppid').
1367 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
1368 to `EAGAIN', which is the preferred name. On systems whose kernels
1369 use two distinct codes, the C library now translates EWOULDBLOCK to
1370 EAGAIN in every system call function.
1371 \f
1372 Version 1.06
1374 * The GNU C Library Reference Manual is now distributed with the library.
1375 `make dvi' will produce a DVI file of the printed manual.
1376 `make info' will produce Info files that you can read on line using C-h i
1377 in Emacs or the `info' program.
1378 Please send comments on the manual to bug-glibc-manual@gnu.org.
1380 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
1382 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
1384 * Jason Merrill has contributed a port to the Sequent Symmetry running
1385 Dynix version 3 (i386-sequent-dynix).
1387 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
1388 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
1390 * New function `memory_warnings' lets you arrange to get warnings when
1391 malloc is running out of memory to allocate, like Emacs gives you.
1393 * The C library now contains the relocating allocator used in Emacs 19 for
1394 its editing buffers. This allocator (ralloc) minimizes allocation
1395 overhead and fragmentation by moving allocated regions around whenever it
1396 needs to. You always refer to a ralloc'd region with a "handle" (a
1397 pointer to a pointer--an object of type `void **').
1399 * There is a new `printf' format: `%m' gives you the string corresponding
1400 to the error code in `errno'.
1402 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
1403 or `%[' conversion, but instead of filling in a fixed-sized buffer you
1404 pass, the `a' modifier says to fill in a `char **' you pass with a
1405 malloc'd string.
1407 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
1408 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
1409 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
1411 * `mkstemp' is a traditional Unix function to atomically create and open a
1412 uniquely-named temporary file.
1413 \f
1414 Version 1.05
1416 * The standard location for the file that says what the local timezone is
1417 has changed again. It is now `/usr/local/etc/localtime' (or more
1418 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
1420 * The distribution no longer contains any files with names longer than 14
1421 characters.
1423 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
1424 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
1426 * New functions `ttyslot' and `syslog' from 4.4 BSD.
1427 \f
1428 Version 1.04
1430 * The configuration process has changed quite a bit. The `configure'
1431 script is now used just like the configuration scripts for other GNU
1432 packages. The `sysdeps' directory hierarchy is much rearranged.
1433 The file `INSTALL' explains the new scheme in detail.
1435 * The header files no longer need to be processed into ANSI C and
1436 traditional C versions. There is just one set of files to install, and
1437 it will work with ANSI or old C compilers (including `gcc -traditional').
1439 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
1440 MIPS DECStation running Ultrix 4.
1442 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
1443 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
1444 made itself into a shared library.
1446 * Yet further improved support for the i386, running 4.3 BSD-like systems
1447 (such as Mach 3 with the Unix single-server), or System V.
1449 * New function `strncasecmp' to do case-insensitive string comparison
1450 with limited length.
1452 * New function `strsep' is a reentrant alternative to `strtok'.
1454 * New functions `scandir' and `alphasort' for searching directories.
1456 * New function `setenv' is a better interface to `putenv'.
1458 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
1459 function for traversing a directory tree.
1461 * The GNU obstack package is now also part of the C library.
1462 The new function `open_obstack_stream' creates a stdio stream that
1463 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
1464 formatted output directly to an obstack.
1466 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
1467 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
1469 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
1471 * The new functions `strfry' and `memfrob' do mysterious and wonderful
1472 things to your strings.
1474 * There are some new test programs: test-fseek, testmb, and testrand.
1476 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
1477 These ports are not finished, but are a good starting place for really
1478 supporting those systems.
1480 * `/etc/localtime' is now the standard location for the file that says what
1481 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
1482 This follows the general principle that `/etc' is the place for all local
1483 configuration files.
1485 * The C library header files now use `extern "C"' when used by the C++
1486 compiler, so the C library should now work with C++ code.
1488 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
1489 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
1490 in <strings.h>.)
1492 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
1493 function which uses the `merge sort' algorithm, and is said to be
1494 significantly faster than the old GNU `qsort' function. Merge sort is
1495 now the standard `qsort' function. The new algorithm can require a lot
1496 of temporary storage; so, the old sorting function is called when the
1497 required storage is not available.
1499 * The C library now includes Michael Glad's Ultra Fast Crypt, which
1500 provides the Unix `crypt' function, plus some other entry points.
1502 * The code and header files taken from 4.4 BSD have been updated with the
1503 latest files released from Berkeley.
1504 \f
1505 ----------------------------------------------------------------------
1506 Copyright information:
1508 Copyright (C) 1992-1999,2000,2001,2002 Free Software Foundation, Inc.
1510 Permission is granted to anyone to make or distribute verbatim copies
1511 of this document as received, in any medium, provided that the
1512 copyright notice and this permission notice are preserved,
1513 thus giving the recipient permission to redistribute in turn.
1515 Permission is granted to distribute modified versions
1516 of this document, or of portions of it,
1517 under the above conditions, provided also that they
1518 carry prominent notices stating who last changed them.
1519 \f
1520 Local variables:
1521 version-control: never
1522 End: