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1 GNU C Library NEWS -- history of user-visible changes. 2005-04-05
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 2.3.5
10 * The following bugs are resolved with this release:
12 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
13 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
14 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
15 777, 787, 821, 822, 823, 825
17 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
18 \f
19 Version 2.3.4
21 * Support for RFC 3678. Real implementations exist only for Linux so far.
22 Implemented by Ulrich Drepper.
24 * nscd can now cache entries persistently. Expiring entries are reloaded.
25 For speedups the cache can be shared in memory with client processes.
26 Implemented by Ulrich Drepper.
28 * nscd can now perform SELinux checks.
29 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
31 * getaddrinfo queries are now cached. Canonical name lookup is performed
32 efficiently.
33 Implemented by Ulrich Drepper.
35 * The nothrow function attribute is used when headers are used by gcc when
36 compiling C code. This can avoid significant amounts of exception
37 handling data.
39 * The malloc functions perform more error checking and are stricter when
40 it comes to reacting on errors. The default action is to terminate
41 the process after showing an error message. Implemented by Ulrich Drepper.
43 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
44 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
46 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
47 namespaces using the new function dlmopen(). This feature is of course,
48 like most other dynamic loading functionality, not available in statically
49 linked applications. Implemented by Ulrich Drepper.
51 * Low-overhead boundary checking variants of string and some stdio functions
52 were added. These are to be used in conjunction with a gcc patch by
53 Jakub Jelinek which adds calls to these functions if possible.
54 Implemented by Jakub Jelinek and Ulrich Drepper.
56 * Old code for several operating systems and machine architectures that
57 have not been in working condition in a long time have been removed from
58 the main source tree maintained by the GNU C Library's maintainers.
59 These files are now reside in the separate `ports' source module
60 that is usable as an add-on when building the library.
61 \f
62 Version 2.3.3
64 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
65 interrogate the dynamic linker, compatible with the Solaris interface.
67 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
68 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
70 * getifaddrs now uses the netlink interface on Linux to get its information.
71 Implemented by Thorsten Kukuk.
73 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
74 Implemented by Ulrich Drepper.
76 * support for non-executable stacks on x86 has been added. Changes mostly
77 by Roland McGrath.
79 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
80 and Ulrich Drepper.
82 * getaddrinfo now performs destination address selection according to
83 RFC 3484.
84 \f
85 Version 2.3.2
87 * Thread-safe interfaces for many functions that access locale data
88 were added in version 2.3, but these features were omitted from NEWS.
89 Many functions have variants with an `_l' suffix that take a `locale_t'
90 object as a parameter rather than consulting the current locale.
91 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
92 create and maintain `locale_t' objects. Additionally, the new function
93 `uselocale' sets "the current locale" (as used by functions not so
94 parameterized) set for an individual thread. These features were added
95 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
97 * The functions getresuid, getresgid, setresuid, and setresgid, which
98 have long been available on Linux, are now declared in <unistd.h>
99 and are now also available on the Hurd.
101 * ELF thread-local storage support (TLS) now works on x86-64.
103 * The new dynamic string token $LIB is expanded in shared library names.
104 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
106 * Aldy Hernandez contributed complete software floating point support for
107 PowerPC machines with no FPU.
109 * fexecve is implemented on Linux.
111 * The `btowc' function should work at least twice as fast due to
112 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
114 * With approriate thread add-ons cancelable functions are now implemented
115 in libc.so as well. No need to call the function in libpthread. This
116 change allowed to finally disable the incorrect and expensive handling
117 of weak definition in ld.so.
119 * Yet more PLT entries in libc.so have been removed. We finally arrived
120 at the bare minimum. Startup times improved appropriately.
122 * Support for the new Linux/x86 system call interface was added. The
123 AT_SYSINFO auxiliary vector entry is recognized and handled.
124 \f
125 Version 2.3
127 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
128 charsets.
130 * iconv (the program and the interface) now accepts empty names (excluding
131 options like //TRANSLIT) to mean "use charset of current locale".
133 * localedef can now transliterate characters in strings which are not in
134 the provided charmap. The information from the input locale is used.
136 * Prelinking support was added for ELF targets. This requires additional
137 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
139 * Read-only stdio streams now use mmap to speed up operation by eliminating
140 copying and buffer underflows. To use add 'm' to the mode string of
141 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
143 * The malloc functions were completely rewritten by Wolfram Gloger based
144 on Doug Lea's malloc-2.7.0.c.
146 * Isamu Hasegawa contributed a completely new and POSIX-conformant
147 implementation of regex.
149 * Bruno Haible upgraded the iconv and locale implementation to support
150 Unicode 3.2.
152 * Contents of the LC_* and LANG environment variables in the CEN style are
153 not recognized anymore. It never was used. Change by Ulrich Drepper.
155 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
156 thread-local storage (TLS) ABI on some platforms.
157 Changes by Ulrich Drepper. SH support by Kaz Kojima.
159 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
160 EUC-JISX0213, and TSCII.
162 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
163 BSD-compatible interface for getting all network interface addresses.
164 Implementation for IPv4 by Roland McGrath.
166 * Loading of locale data is faster due to the introduction of a locale
167 archive. Implemented by Roland McGrath and Ulrich Drepper.
169 * Startup times are significantly reduced by not using exported functions
170 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
171 and Ulrich Drepper.
173 * Steven Munroe contributed a port to PowerPC64/Linux.
174 \f
175 Version 2.2.6
177 * The Hurd now uses the GNU libio implementation of stdio rather than the
178 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
180 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
181 with the same behavior as the Linux system call of the same name.
182 \f
183 Version 2.2.5
185 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
186 128-bit long double format.
188 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
189 IBM1161, and IBM1162 charsets.
191 * Andreas Jaeger contributed a port to x86-64/Linux.
193 * Peter Bruin contributed a port to PowerPC/Hurd.
195 * libc functions using I/O streams now can handle wide-oriented streams
196 as well.
198 * optimizations in the dynamic linker. Binaries created by recent binutils
199 versions start up quicker due to reduced time spent on relocations.
201 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
202 \f
203 Version 2.2.4
205 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
206 asinh, atanh, j0 for the 128-bit long double format.
208 * Bruno Haible updated all the code handling Unicode in some form to
209 support Unicode 3.1.
211 * Speed of regex for single-byte locales is back to previous levels.
212 Patch by Isamu Hasegawa.
214 * Alpha, SPARC, and IA-64 now also using floating stacks.
216 * Startup time of internationalized applications greatly improved through
217 iconv cache. Use iconvconfig to generate the cache file.
218 Contributed by Ulrich Drepper.
220 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
221 severe performance problems. Patch by David Mosberger.
223 * The Hurd port got a lot more functionality like AIO, various stdio
224 extensions, etc. Mainly done by Roland McGrath.
226 * mtrace can now lookup symbols in shared libraries.
227 \f
228 Version 2.2.3
230 * Intel's IA-64 math library is largely integrated. It provides fast and
231 accurate implementatations for most basic and standard math functions
232 in float, double, and long double format.
234 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
235 and asin for the 96-bit long double format and asin, log, tan for the
236 128-bit long double format.
238 * The beginning of a last-bit accurate math library by IBM Haifa were added.
239 The basic double functions exist today. Contributed by Abraham Ziv
240 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
241 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
243 * An asynchronous name lookup library was added. The interface is designed
244 after POSIX AIO. The proposal was circulated beforehand to get comments.
245 No negative ones came in. Implemented by Ulrich Drepper.
247 * Port to S390/64bit contributed by Martin Schwidefsky
248 <schwidefsky@de.ibm.com>.
250 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
251 of functions for Linux/IA-64.
253 * The RPC code is now thread safe. Threads can now use the same service
254 of different services at the same time. Patch by Eric Norum
255 <eric.norum@usask.ca> with some help by Ulrich Drepper.
257 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
258 family of functions for Linux/S390.
260 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
261 of functions for Linux/x86.
263 * Port to Linux/CRIS contributed by Axis Communications.
264 \f
265 Version 2.2.2
267 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
268 we can now check for namespace violations and missing declarations. The
269 result is that almost all headers are now Unix-compliant (as defined in
270 the upcoming XPG6). The negative side is that some programs might need
271 corrections, too, if they depend on the incorrect form of the headers in
272 previous versions which defined too many symbols and included too many
273 other headers.
275 * regex now handles multibyte character sets correctly.
276 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
278 * iconv (the program) does now conform to the upcoming XPG6 and handles
279 charmaps. Instead of the charset names the path of charmaps can be
280 provided and the conversion happens based on this data.
281 Contributed by Ulrich Drepper.
283 * The locale program now provides detailed information about the installed
284 locales. While
286 locale -a
288 only lists the names of the supported locales
290 locale -a --verbose
292 provides details such as country, language, and codeset name.
293 Contributed by Ulrich Drepper.
294 \f
295 Version 2.2.1
297 * The gencat program now parses the input file according to the charset
298 selected by the LC_CTYPE category. This is important for stateful
299 character sets. To make generating catalogs easier there is a way
300 to overwrite the charset selected by the locale: before the first
301 message or $ quote line the catalog can contain a line like
303 $ codeset=ISO-8859-2
305 to select the charset (ISO-8859-2 in this case).
307 Implemented by Shinya Hanataka and Ulrich Drepper.
309 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
310 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
311 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
313 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
314 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
316 * The LANGUAGE environment variable is now ignored unless the locale is
317 changed from the default "C" locale.
319 * The usual bug fixes.
320 \f
321 Version 2.2
323 * Greg McGary added runtime support for bounds checking using gcc's
324 new -fbounded-pointers option. ix86 target is complete. PowerPC
325 is in progress.
327 * Thorsten Kukuk added secure mode support to nscd.
329 * The Berkeley db libraries have been removed.
331 Related, the nss_db module is now in a separate package since it
332 obviously requires a database library being available.
334 * Wide character I/O streams implemented by Ulrich Drepper.
336 * Functions from the extended socket API added by Ulrich Drepper.
338 * Functions feenableexcept and fedisableexcept to control the
339 behaviour of individual exceptions have been added by Andreas Jaeger.
341 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
343 * The resolver code has been updated from bind 8.2.3-T5B which supports
344 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
345 and Mark Kettenis.
347 This change could in some situations effect backward compatibility. Since
348 now `_res' is a thread-local instead of a global variable, modifying it
349 in one thread does not have any effect in other threads.
351 The resolver library was also extended to allow IPv6 as the transport
352 protocol for the requests. This work was done by Stig Venaas.
354 * Compatibility code for K&R C compilers has been removed from the
355 header files. A ISO C compiler is needed to use the library
356 (conforming to either C89 or C99 standard).
358 * Complete rewrite of the localedef program to support multibyte character
359 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
360 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
361 Implemented by Ulrich Drepper.
363 Bruno Haible significantly improved the generation and use of the data
364 structures for the wide character tables.
366 * Plural handling in gettext implemented by Ulrich Drepper.
368 * The utmp daemon has been removed.
370 * The port to MIPS-Linux has been finished by Andreas Jaeger.
372 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
373 and Yutaka Niibe.
375 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
377 * POSIX barriers implemented by Kaz Kylheku.
379 * POSIX spawn function family implemented by Ulrich Drepper.
381 * POSIX spinlocks are now available.
383 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
385 * the configure option --enable-kernel=X.Y.Z allows to strip out
386 compatibility for kernel versions before X.Y.Z. This is currently only
387 implemented for Linux.
389 * the sockaddr_in6 structure changed. The IPv6 working group added a new
390 field sin6_scope_id. This means that all programs using IPv6 should be
391 recompiled. Don't expect binary compatibility with previous glibc
392 versions.
394 * various conversion modules for IBM character sets contributed by
395 Masahide Washizawa.
397 * IA-64 port by Jes Sorensen and HJ Lu.
399 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
400 Compiling the GNU C Library for Linux/ia64
401 ******************************************
403 Please refer to the file INSTALL in the same directory as you found
404 this file for general information about configuring and compiling
405 glibc.
407 For general inquiries about glibc under Linux/ia64 please use the
408 following mailing list linux-ia64@linuxia64.org or one of the relevant
409 glibc mailing lists.
411 Recommended Tools for Compilation
412 =================================
414 In order for glibc-2.2 to build correctly on the ia64 you need at
415 least the following versions of the GNU tools (the :
417 * The Cygnus toolchain snapshot for the ia64 as of August 4
418 including the provided set of patches. It is however recommend
419 you use the October 24 toolchain snapshot or a more recent version.
421 OR alternatively you can try the following (the Cygnus toolchain is
422 the recommended solution):
424 * GCC and binutils, GAS and GNU LD out of CVS from
425 sources.redhat.com as of August 28, 2000 or later. The CVS tree
426 may require special patches to work properly on the ia64.
428 Configuring and compiling GNU Libc for Linux/ia64
429 =================================================
431 The library requires Linux kernel version 2.4.0-test4-000728 or
432 later to funtion properly. Besides that it support for debug libraries
433 is currently untested. Hence the following options
434 are required for configuring the library:
436 --disable-debug --enable-kernel=2.4.0
438 It is also important that you make sure the library picks up the
439 appropriate kernel header files, if you do not have recent enough
440 kernel headers in /usr/src/linux/include, you should use the
441 --with-headers=<path> option to specify the location.
443 As an example I personally use the following options to configure
444 the library:
446 --disable-debug
447 --disable-cvs
448 --enable-kernel=2.4.0
449 --host=ia64-linux
450 --enable-add-ons=yes
451 --prefix=/usr
452 --with-headers=/home/jes/linux/include
455 Good luck
457 Jes Sorensen <jes@linuxcare.com>,
458 November 14th, 2000
459 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
460 \f
461 Version 2.1.3
463 * bug fixes
465 \f
466 Version 2.1.2
468 * bug fixes
470 \f
471 Version 2.1.1
473 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
475 * New xdr functions are added; some rpc functions are now 64bit clean.
477 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
479 * Fixed known incompatibilities with glibc 2.0.
481 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
483 * Optimized a number of functions (especially the ELF dynamic loader).
485 * Update timezone data files.
487 * lots of charmaps corrections
489 * some new locale definitions and charmaps
491 \f
492 Version 2.1
494 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
495 conform to POSIX member type requirements. Symbol versions have been
496 adjusted as needed within the library, and for direct use by applications,
497 but there is potential for problems if third-party libraries use
498 struct timeval as part of their interface. This does not present
499 a problem for X and other "essential" system libraries.
501 * An additional locale model to support C++ Standard Library locale
502 model and probably more was implemented by Ulrich Drepper.
504 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
505 symbol level.
507 * Miles Bader provided the `argp' function family to support hierachical
508 command line argument parsing, layered on top of getopt.
510 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
512 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
513 numbers.
515 * scanf recognizes the %a and %A format for scanning floating point numbers.
517 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
518 information and interfaces for the available integer types.
520 * about 130 new math functions were added to implement the ISO C9x math
521 library.
523 * the new header <complex.h> contains definitions of the complex math
524 functions from ISO C 9X.
526 * the new header <tgmath.h> defines generic macros to use complex or
527 real valued functions.
529 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
531 * Andreas Jaeger provided a test suite for the math library.
533 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
535 * Ulrich Drepper added character set conversion functions (iconv).
537 * Optimized string functions have been added.
539 * The localedata addon is now part of glibc.
541 * An implementation of profiling shared libraries was added by Ulrich Drepper.
543 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
544 daemon for NSS (nscd).
546 Missing a better place here are some numbers on improvements. Under
547 Linux 2.1.125 un-tar-ing the kernel sources takes
549 user system wall
551 using local files 12.19s 6.88s 22.91s
553 using NIS 13.92s 8.91s 26.34s
555 using NIS & nscd 10.37s 7.34s 25.30s
557 using NIS+ 27.57s 30.37s 640.46s
559 using NIS+ & nscd 10.25s 7.83s 26.51s
561 using NIS & old nscd [1] 13.83s 8.32s 29.60s
563 Keep in mind that non-namelookup related operations dominate above times.
564 It was just a common complain that using NIS+ unpacking the kernel is
565 horribly slow.
567 [1] The old nscd implementation is not available anymore since it was
568 distributed with glibc up to version 2.0.98 and thus is now replaced.
570 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
572 * Mark Kettenis provided a Hesiod NSS module.
574 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
575 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
577 * rcmd can now handle netgroups (Dick Streefland).
579 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
580 Bambrough.
582 * Support for the IPv6 protocol has been added to the socket API, as per the
583 latest draft standards.
585 * Support for Linux 2.2 has been added.
587 * Interface changes relative to the latest 2.0.x release:
588 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
589 addseverity NEW: Unix98
590 alphasort64 NEW: LFS
591 argp_err_exit_status NEW: argp, GNU ext
592 argp_error NEW: argp, GNU ext
593 argp_failure NEW: argp, GNU ext
594 argp_help NEW: argp, GNU ext
595 argp_parse NEW: argp, GNU ext
596 argp_program_bug_address NEW: argp, GNU ext
597 argp_program_version NEW: argp, GNU ext
598 argp_program_version_hook NEW: argp, GNU ext
599 argp_state_help NEW: argp, GNU ext
600 argp_usage NEW: argp, GNU ext
601 authdes_create NEW: Secure RPC
602 authdes_getucred NEW: Secure RPC
603 authdes_pk_create NEW: Secure RPC
604 backtrace NEW: GNU ext.
605 backtrace_symbols NEW: GNU ext.
606 backtrace_symbols_fd NEW: GNU ext.
607 cacos NEW: ISO C 9x
608 cacosf NEW: ISO C 9x
609 cacosh NEW: ISO C 9x
610 cacoshf NEW: ISO C 9x
611 cacoshl NEW: ISO C 9x
612 cacosl NEW: ISO C 9x
613 capget NEW: kernel
614 capset NEW: kernel
615 carg NEW: ISO C 9x
616 cargf NEW: ISO C 9x
617 cargl NEW: ISO C 9x
618 casin NEW: ISO C 9x
619 casinf NEW: ISO C 9x
620 casinh NEW: ISO C 9x
621 casinhf NEW: ISO C 9x
622 casinhl NEW: ISO C 9x
623 casinl NEW: ISO C 9x
624 catan NEW: ISO C 9x
625 catanf NEW: ISO C 9x
626 catanh NEW: ISO C 9x
627 catanhf NEW: ISO C 9x
628 catanhl NEW: ISO C 9x
629 catanl NEW: ISO C 9x
630 cbc_crypt NEW: Secure RPC
631 ccos NEW: ISO C 9x
632 ccosf NEW: ISO C 9x
633 ccosh NEW: ISO C 9x
634 ccoshf NEW: ISO C 9x
635 ccoshl NEW: ISO C 9x
636 ccosl NEW: ISO C 9x
637 cexp NEW: ISO C 9x
638 cexpf NEW: ISO C 9x
639 cexpl NEW: ISO C 9x
640 cimag NEW: ISO C 9x
641 cimagf NEW: ISO C 9x
642 cimagl NEW: ISO C 9x
643 clearerr_locked REMOVED
644 clntunix_create NEW: sunrpc ext
645 clog NEW: ISO C 9x
646 clog10 NEW: ISO C 9x
647 clog10f NEW: ISO C 9x
648 clog10l NEW: ISO C 9x
649 clogf NEW: ISO C 9x
650 clogl NEW: ISO C 9x
651 conj NEW: ISO C 9x
652 conjf NEW: ISO C 9x
653 conjl NEW: ISO C 9x
654 cpow NEW: ISO C 9x
655 cpowf NEW: ISO C 9x
656 cpowl NEW: ISO C 9x
657 cproj NEW: ISO C 9x
658 cprojf NEW: ISO C 9x
659 cprojl NEW: ISO C 9x
660 creal NEW: ISO C 9x
661 crealf NEW: ISO C 9x
662 creall NEW: ISO C 9x
663 creat64 NEW: LFS
664 csin NEW: ISO C 9x
665 csinf NEW: ISO C 9x
666 csinh NEW: ISO C 9x
667 csinhf NEW: ISO C 9x
668 csinhl NEW: ISO C 9x
669 csinl NEW: ISO C 9x
670 csqrt NEW: ISO C 9x
671 csqrtf NEW: ISO C 9x
672 csqrtl NEW: ISO C 9x
673 ctan NEW: ISO C 9x
674 ctanf NEW: ISO C 9x
675 ctanh NEW: ISO C 9x
676 ctanhf NEW: ISO C 9x
677 ctanhl NEW: ISO C 9x
678 ctanl NEW: ISO C 9x
679 des_setparity NEW: Secure RPC
680 ecb_crypt NEW: Secure RPC
681 endutxent NEW: Unix98
682 exp10 NEW: ISO C 9x
683 exp10f NEW: ISO C 9x
684 exp10l NEW: ISO C 9x
685 exp2 NEW: ISO C 9x
686 exp2f NEW: ISO C 9x
687 exp2l NEW: ISO C 9x
688 fattach NEW: STREAMS
689 fdetach NEW: STREAMS
690 fdim NEW: ISO C 9x
691 fdimf NEW: ISO C 9x
692 fdiml NEW: ISO C 9x
693 feclearexcept NEW: ISO C 9x
694 fegetenv NEW: ISO C 9x
695 fegetexceptflag NEW: ISO C 9x
696 fegetround NEW: ISO C 9x
697 feholdexcept NEW: ISO C 9x
698 feof_locked REMOVED
699 feraiseexcept NEW: ISO C 9x
700 ferror_locked REMOVED
701 fesetenv NEW: ISO C 9x
702 fesetexceptflag NEW: ISO C 9x
703 fesetround NEW: ISO C 9x
704 fetestexcept NEW: ISO C 9x
705 feupdateenv NEW: ISO C 9x
706 fflush_locked REMOVED
707 ffsl NEW: GNU ext.
708 ffsll NEW: GNU ext.
709 fgetpos64 NEW: LFS
710 fgets_unlocked NEW: GNU ext.
711 fileno_locked REMOVED
712 fma NEW: ISO C 9x
713 fmaf NEW: ISO C 9x
714 fmal NEW: ISO C 9x
715 fmax NEW: ISO C 9x
716 fmaxf NEW: ISO C 9x
717 fmaxl NEW: ISO C 9x
718 fmin NEW: ISO C 9x
719 fminf NEW: ISO C 9x
720 fminl NEW: ISO C 9x
721 fmtmsg NEW: Unix98
722 fopen64 NEW: LFS
723 fputc_locked REMOVED
724 fputs_unlocked NEW: GNU ext.
725 fread_unlocked NEW: GNU ext.
726 freopen64 NEW: LFS
727 fseeko NEW: Unix98
728 fsetpos64 NEW: LFS
729 fstatfs64 NEW: LFS
730 fstatvfs NEW: Unix98
731 fstatvfs64 NEW: LFS
732 ftello NEW: Unix98
733 ftello64 NEW: LFS
734 ftruncate64 NEW: LFS
735 ftw64 NEW: LFS
736 fwrite_unlocked NEW: GNU ext.
737 gai_strerror NEW: IPv6
738 gamma_r REMOVED
739 gammaf_r REMOVED
740 gammal_r REMOVED
741 getchar_locked REMOVED
742 getdate NEW: Unix98
743 getdate_err NEW: Unix98
744 getdate_r NEW: GNU ext.
745 getmsg NEW: STREAMS
746 getnameinfo NEW: IPv6
747 getnetname NEW: Secure RPC
748 getpmsg NEW: STREAMS
749 getpt NEW: Unix98 PTY
750 getrlimit64 NEW: LFS
751 getutxent NEW: Unix98
752 getutxid NEW: Unix98
753 getutxline NEW: Unix98
754 glob64 NEW: GNU ext.
755 globfree64 NEW: GNU ext.
756 gnu_get_libc_release NEW: GNU ext.
757 gnu_get_libc_version NEW: GNU ext.
758 grantpt NEW: Unix98 PTY
759 host2netname NEW: Secure RPC
760 iconv NEW: iconv
761 iconv_close NEW: iconv
762 iconv_open NEW: iconv
763 if_freenameindex NEW: IPv6
764 if_indextoname NEW: IPv6
765 if_nameindex NEW: IPv6
766 if_nametoindex NEW: IPv6
767 in6addr_any NEW: IPv6
768 in6addr_loopback NEW: IPv6
769 inet6_isipv4mapped NEW: IPv6
770 isastream NEW: STREAMS
771 iswblank NEW: GNU ext.
772 key_decryptsession NEW: Secure RPC
773 key_decryptsession_pk NEW: Secure RPC
774 key_encryptsession NEW: Secure RPC
775 key_encryptsession_pk NEW: Secure RPC
776 key_gendes NEW: Secure RPC
777 key_get_conv NEW: Secure RPC
778 key_secretkey_is_set NEW: Secure RPC
779 key_setnet NEW: Secure RPC
780 key_setsecret NEW: Secure RPC
781 llrint NEW: ISO C 9x
782 llrintf NEW: ISO C 9x
783 llrintl NEW: ISO C 9x
784 llround NEW: ISO C 9x
785 llroundf NEW: ISO C 9x
786 llroundl NEW: ISO C 9x
787 log2 NEW: ISO C 9x
788 log2f NEW: ISO C 9x
789 log2l NEW: ISO C 9x
790 lrint NEW: ISO C 9x
791 lrintf NEW: ISO C 9x
792 lrintl NEW: ISO C 9x
793 lround NEW: ISO C 9x
794 lroundf NEW: ISO C 9x
795 lroundl NEW: ISO C 9x
796 lseek64 NEW: LFS
797 makecontext NEW: Unix98
798 mempcpy NEW: GNU ext.
799 mmap64 NEW: LFS
800 moncontrol REMOVED
801 modify_ldt NEW: kernel
802 nan NEW: ISO C 9x
803 nanf NEW: ISO C 9x
804 nanl NEW: ISO C 9x
805 nearbyint NEW: ISO C 9x
806 nearbyintf NEW: ISO C 9x
807 nearbyintl NEW: ISO C 9x
808 netname2host NEW: Secure RPC
809 netname2user NEW: Secure RPC
810 nexttoward NEW: ISO C 9x
811 nexttowardf NEW: ISO C 9x
812 nexttowardl NEW: ISO C 9x
813 nftw NEW: Unix98
814 nftw64 NEW: LFS
815 open64 NEW: LFS
816 passwd2des NEW: Secure RPC
817 pow10 NEW: GNU ext.
818 pow10f NEW: GNU ext.
819 pow10l NEW: GNU ext.
820 pread NEW: Unix98
821 pread64 NEW: LFS
822 printf_size NEW: GNU ext.
823 printf_size_info NEW: GNU ext.
824 profil_counter REMOVED
825 pthread_mutexattr_getkind_np REPLACED
826 pthread_mutexattr_setkind_np REPLACED
827 ptsname NEW: Unix98 PTY
828 ptsname_r NEW: Unix98 PTY
829 putc_locked REMOVED
830 putchar_locked REMOVED
831 putgrent NEW: GNU ext.
832 putmsg NEW: STREAMS
833 putpmsg NEW: STREAMS
834 pututxline NEW: Unix98
835 pwrite NEW: Unix98
836 pwrite64 NEW: LFS
837 readdir64 NEW: LFS
838 readdir64_r NEW: LFS
839 remquo NEW: ISO C 9x
840 remquof NEW: ISO C 9x
841 remquol NEW: ISO C 9x
842 round NEW: ISO C 9x
843 roundf NEW: ISO C 9x
844 roundl NEW: ISO C 9x
845 rtime NEW: GNU ext.
846 scalbln NEW: ISO C 9x
847 scalblnf NEW: ISO C 9x
848 scalblnl NEW: ISO C 9x
849 scandir64 NEW: LFS
850 sendfile NEW: kernel
851 setcontext NEW: Unix98
852 setrlimit64 NEW: LFS
853 setutxent NEW: Unix98
854 sighold NEW: Unix98
855 sigignore NEW: Unix98
856 sigqueue NEW: POSIX.1b
857 sigrelse NEW: Unix98
858 sigset NEW: POSIX.1b
859 sigtimedwait NEW: POSIX.1b
860 sigwaitinfo NEW: POSIX.1b
861 sincos NEW: GNU ext.
862 sincosf NEW: GNU ext.
863 sincosl NEW: GNU ext.
864 statfs64 NEW: LFS
865 statvfs NEW: Unix98
866 statvfs64 NEW: LFS
867 strcasestr NEW: GNU ext.
868 strtoimax NEW: ISO C 9x
869 strtoumax NEW: ISO C 9x
870 strverscmp NEW: GNU ext.
871 svcauthdes_stats NEW: Secure RPC
872 svcunix_create NEW: sunrpc etx
873 svcunixfd_create NEW: sunrpc ext
874 swapcontext NEW: Unix98
875 tcgetsid NEW: Unix98 PTY
876 tdestroy NEW: GNU ext.
877 tgamma NEW: ISO C 9x
878 tgammaf NEW: ISO C 9x
879 tgammal NEW: ISO C 9x
880 tmpfile64 NEW: LFS
881 trunc NEW: ISO C 9x
882 truncate64 NEW: LFS
883 truncf NEW: ISO C 9x
884 truncl NEW: ISO C 9x
885 umount2 NEW: kernel
886 unlockpt NEW: Unix98 PTY
887 updwtmpx NEW: Unix98
888 user2netname NEW: Secure RPC
889 utmpxname NEW: Unix98
890 versionsort NEW: GNU ext.
891 versionsort64 NEW: GNU ext.
892 waitid NEW: Unix98
893 wcscasecmp NEW: GNU ext.
894 wcsncasecmp NEW: GNU ext.
895 wcsnlen NEW: GNU ext.
896 wcstoimax NEW: ISO C 9x
897 wcstoll NEW: ISO C 9x
898 wcstoull NEW: ISO C 9x
899 wcstoumax NEW: ISO C 9x
900 wcswcs NEW: Unix98
901 wordexp NEW: POSIX.2
902 wordfree NEW: POSIX.2
903 write_profiling REMOVED
904 xdecrypt NEW: Secure RPC
905 xdr_authdes_cred NEW: Secure RPC
906 xdr_authdes_verf NEW: Secure RPC
907 xdr_cryptkeyarg NEW: Secure RPC
908 xdr_cryptkeyarg2 NEW: Secure RPC
909 xdr_cryptkeyres NEW: Secure RPC
910 xdr_getcredres NEW: Secure RPC
911 xdr_key_netstarg NEW: Secure RPC
912 xdr_key_netstres NEW: Secure RPC
913 xdr_keybuf NEW: Secure RPC
914 xdr_keystatus NEW: Secure RPC
915 xdr_netnamestr NEW: Secure RPC
916 xdr_sizeof NEW: Secure RPC
917 xdr_unixcred NEW: sunrpc ext
918 xencrypt NEW: Secure RPC
919 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
920 \f
921 Version 2.0.6
923 * more bug fixes
925 \f
926 Version 2.0.5
928 * more bug fixes
930 * inet_ntoa is thread-safe
932 * updwtmp is moved from libutil to libc
934 * rewrite of cbrt function
936 * update of timezone data
937 \f
938 Version 2.0.4
940 * more bug fixes
941 \f
942 Version 2.0.3
944 * more bug fixes
945 \f
946 Version 2.0.2
948 * more bug fixes
950 * add atoll function
952 * fix complex problems in Berkeley DB code
954 * fix math functions
955 \f
956 Version 2.0.1
958 * fixed lots of header problems (especially Linux/GNU specific)
960 * dynamic loader preserves all registers
962 * Roland McGrath provided support for handling of auxiliary objects in
963 the ELF dynamic loader.
965 * support for parallel builds is improved
966 \f
967 Version 2.0
969 * GNU extensions are no longer declared by default. To enable them you
970 must define the macro `_GNU_SOURCE' in your program or compile with
971 `-D_GNU_SOURCE'.
973 * The library has changed from using GNU ld symbol aliases to using weak
974 symbols where available. The ELF object file format supports weak
975 symbols; GNU ld also supports weak symbols in the a.out format. (There
976 is also now support for other GNU ld extensions in ELF. Use the
977 `--with-elf' option to configure to indicate you have ELF, and
978 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
979 of many files which contained only symbol aliases, reducing the size of
980 the source and the compiled library; many other files were renamed to
981 less cryptic names previously occupied by the symbol alias files.
982 There is a new header file <elf.h> for programs which operate on
983 files in the ELF format.
985 * Converted to Autoconf version 2, so `configure' has more options.
986 Run `configure --help' to see the details.
988 * The library can now be configured to build profiling, highly-optimized
989 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
990 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
991 `configure' enable building these extra libraries. The shared library is
992 built by default when using both ELF and GNU ld. When shared libraries
993 are enabled, the new library `-ldl' is available for arbitrary run-time
994 loading of shared objects; its interface is defined in <dlfcn.h>. The
995 new header file <link.h> gives access to the internals of the run-time
996 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
997 application of same name on other systems and it provides information
998 about dynamically linked binaries.
1000 * The C library now provides the run-time support code for profiling
1001 executables compiled with `-pg'. Programs can control the profiling code
1002 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1003 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1004 the support for this file format was contributed by David Mosberger-Tang.
1006 * The math code has been replaced with a math library based on fdlibm from
1007 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1008 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1009 functions. The math functions now reside in a separate library, so
1010 programs using them will need to use `-lm' their linking commands.
1012 * John C. Bowman contributed optimized ix87 assembler inline functions.
1014 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1015 mechanism similar to that found in Solaris 2. This is now used for the
1016 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1017 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1018 file controls what services are used for each individual database. This
1019 works by loading shared libraries with names specified in `nsswitch.conf',
1020 so service modules can be changed or added at any time without even
1021 relinking any program. Currently there are the file, db, and NIS based
1022 NSS services available.
1024 * The new functions `strtoq' and `strtouq' parse integer values from
1025 strings, like `strtol' and `strtoul', but they return `long long int' and
1026 `unsigned long long int' values, respectively (64-bit quantities).
1028 * The new functions `strtof' and `strtold' parse floating-point values from
1029 strings, like `strtod', but they return `float' and `long double' values,
1030 respectively (on some machines `double' and `long double' are the same).
1032 * Ulrich Drepper has contributed new implementations of the floating-point
1033 printing and reading code used in the `printf' family of functions and
1034 `strtod', `strtof', and `strtold'. These new functions are perfectly
1035 accurate, and much faster than the old ones.
1037 * The implementation of the POSIX locale model was completely rewritten by
1038 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1039 to compile the POSIX locale definition.
1041 * The former dummy implementations of the strcoll and strxfrm function are
1042 now replaced by fully functional code contributed by Ulrich Drepper. The
1043 collation information comes from the POSIX locale definitions.
1045 * The new header <langinfo.h> defines an interface for accessing
1046 various locale-dependent data (using the locale chosen with `setlocale').
1048 * Ulrich Drepper has contributed a new suite of functions for operation on
1049 wide-character and multibyte-character strings, in <wchar.h>;
1050 and classification and case conversion of wide characters, in <wctype.h>.
1051 These new functions are conforming to the ISO C, Amendement 1 specification.
1053 * There is now a second implementation of the standard I/O library available.
1054 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1055 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1057 * You can now use positional parameter specifications in format strings
1058 for the `printf' and `scanf' families of functions. For example,
1059 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1060 ``Number 6, Mr Jones''. This is mainly useful when providing different
1061 format strings for different languages, whose grammars may dictate
1062 different orderings of the values being printed. To support this
1063 feature, the interface for `register_printf_handler' has changed; see
1064 the header file <printf.h> for details.
1066 * The `printf' and `scanf' families of functions now understand a new
1067 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1068 to group numbers as indicated by the locale; for `scanf' and friends, this
1069 says to accept as valid only a number with all the proper grouping
1070 separators in the right places. In the default "C" locale, numbers are
1071 not grouped; but locales for specific countries will define the usual
1072 conventions (i.e. separate thousands with `,' in the US locale).
1074 * The pgrp functions have been regularized, slightly incompatibly but much
1075 less confusingly. The core functions are now `getpgid' and `setpgid',
1076 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1077 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1078 provided for compatibility. There is no longer an incompatible `getpgrp'
1079 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1081 * The new header file <fts.h> and suite of functions simplify programs that
1082 operate on directory trees. This code comes from 4.4 BSD.
1084 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1085 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1086 NSS scheme used in glibc.
1088 * There is a new malloc debugging hook `__memalign_hook'.
1090 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1091 `unsigned int' in <sys/types.h>. These are for compatibility only and
1092 their use is discouraged.
1094 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1095 done differently, so that it works even without GNU ld.
1097 * New function `euidaccess' checks allowed access to a file like `access',
1098 but using the effective IDs instead of the real IDs.
1100 * The time zone data files have been updated for the latest and greatest
1101 local time conventions of the countries of the world.
1103 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1104 see <dirent.h>.
1106 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1107 for formatting floating-point numbers. They are provided only for
1108 compatibility; new programs should use `sprintf' instead. There are
1109 also equivalent function for the `long double' floating-point type and
1110 all functions also exist in a reentrant form.
1112 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1113 functions for maintaining the login-record files (primarily of use to
1114 system programs such as `login'), and convenient functions for
1115 allocating and initializing a pseudo-terminal (pty) device.
1117 * Ulrich Drepper has contributed new support for System V style
1118 shared memory and IPC on systems that support it.
1120 * Ulrich Drepper has contributed several miscellaneous new functions found
1121 in System V: The `hsearch' family of functions provide an effective
1122 implementation of hash tables; `a64l' and `l64a' provide a very simple
1123 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1124 number generator.
1126 * Ulrich Drepper has contributed new reentrant counterparts for the
1127 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1129 * Ulrich Drepper has contributed new, highly-optimized versions of several
1130 string functions for the i486/Pentium family of processors.
1132 * Ulrich Drepper has updated the Linux-specific code, based largely
1133 on work done in Hongjiu Lu's version of GNU libc for Linux.
1134 The GNU library now supports Linux versions 2.0.10 and later,
1135 using the ELF object file format (i[3456]86-*-linux).
1137 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1139 * David Mosberger-Tang and Richard Henderson have ported the C library
1140 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1141 dynamic linking support for ELF/Alpha.
1143 * Richard Henderson contributed several Alpha optimized assembler function
1144 for arithmetic and string handling.
1146 * Ulrich Drepper has contributed a new set of message catalog functions to
1147 support multiple languages using the <libintl.h> interface, for use with
1148 his new package GNU gettext. Translation volunteers have contributed
1149 catalogs of the library's messages in Spanish, German, and Korean.
1151 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1152 program and the `catgets' function for reading the catalog files it
1153 creates. (The <libintl.h> interface is preferred; we include the
1154 <nl_types.h> interface using `catgets' only for source compatibility with
1155 programs already written to use it.)
1157 * New header file <values.h> gives SVID-compatible names for <limits.h>
1158 constants.
1160 * Various new macros, declarations, and small header files for compatibility
1161 with 4.4 BSD.
1163 * New function `group_member' is a convenient way to check if a process has
1164 a given effective group ID.
1166 * When using GCC 2.7 and later, the socket functions are now declared in a
1167 special way so that passing an argument of type `struct sockaddr_in *',
1168 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1169 `struct sockaddr *' type, does not generate a type-clash warning.
1171 * New function `error' declared in header file <error.h> is a convenient
1172 function for printing error messages and optionally exiting; this is the
1173 canonical function used in GNU programs. The new functions `err', `warn',
1174 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1175 doing the same thing.
1177 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1178 POSIX.2 `glob' function to do ~ and {...} expansion.
1180 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1181 `clearenv' which is used in POSIX.9 is also available.
1183 * New function `getsid' returns session ID number on systems that support it.
1185 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1186 files <db.h> and <mpool.h> provide a rich set of functions for several
1187 types of simple databases stored in memory and in files, and <ndbm.h> is
1188 an old `ndbm'-compatible interface using the `db' functions. Link with
1189 `-ldb' to get these functions.
1191 * New macro `strdupa' copies a string like `strdup', but uses local stack
1192 space from `alloca' instead of dynamic heap space from `malloc'.
1194 * New function `strnlen' is like `strlen' but searches only a given maximum
1195 number of characters for the null terminator. `stpncpy', `strndup' and
1196 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1197 function.
1199 * New function `statfs' in header <sys/statfs.h>.
1201 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1202 provide convenient functions for operating on blocks of null-terminated
1203 strings.
1205 * A new suite of functions in <utmp.h> handle all the details of reading
1206 and writing the utmp file.
1208 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1209 Thorsten Kukuk.
1211 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1212 completely POSIX compliant and also implemented the extended functionality
1213 to handle alternate digit representation and alternate era date formats.
1215 * Ulrich Drepper provided an implementation of the `strptime' function
1216 defined in XPG4.2 which transforms a string into a `struct tm' value.
1218 * Paul Eggert provided the tzselect shell script as part of the timezone
1219 code. The shell script makes it easy to select the correct timezone
1220 specification.
1222 * The implementation of the malloc family of functions is completely replaced
1223 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1224 The implementation uses the mmap function (if available) and it is
1225 optimized for the use in multi threaded programs.
1227 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1228 functions. This new functionality is usable by specifying a special
1229 salt string and it is compatible with implementation on *BSD systems.
1231 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1232 `getsubopt' to handle second level command line options, `bsd_signal'
1233 to access BSD style `signal' functionality, the obsolete `regexp' style
1234 expression matcher.
1236 * the `lchown' function is available on system which support this
1237 functionality.
1239 * The implementation of the shadow password handling function was contributed
1240 by Ulrich Drepper.
1242 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1244 * POSIX.1g support was added. The <sys/select.h> header is available,
1245 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1246 implementation of `getaddrinfo'.
1247 \f
1248 Version 1.09
1250 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1252 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1253 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1255 * The new function `daemon' from 4.4 BSD is useful for server programs that
1256 want to put themselves in the background.
1258 * Joel Sherrill has contributed support for several standalone boards that
1259 run without an operating system.
1261 * `printf', `scanf' and friends now accept a `q' type modifier for long
1262 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1264 * All of the code taken from BSD (notably most of the math and networking
1265 routines) has been updated from the BSD 4.4-Lite release.
1267 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1269 * The new functions `getdomainname' and `setdomainname' fetch or change the
1270 YP/NIS domain name. These are system calls which exist on systems which
1271 have YP (aka NIS).
1273 * The time zone data files have been updated for the latest international
1274 conventions.
1276 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1277 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1278 \f
1279 Version 1.08
1281 * The C library now includes support for Sun RPC, from Sun's free
1282 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1283 are included. (There is still no support for YP.)
1285 * Tom Quinn has contributed a port of the C library to SGI machines running
1286 Irix 4 (mips-sgi-irix4).
1288 * The new `lockf' function is a simplified interface to the locking
1289 facilities of `fcntl', included for compatibility.
1291 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1293 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1295 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1296 compatibility.
1298 * The error message printed by `assert' for a failed assertion now includes
1299 the name of the program (if using GNU ld) and the name of the calling
1300 function (with versions of GCC that support this).
1302 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1304 * The library now includes the <sys/mman.h> header file and memory
1305 management functions `mmap', `munmap', `mprotect', `msync', and
1306 `madvise', on systems that support those facilities.
1308 * The interface for `mcheck' has changed slightly: the function called to
1309 abort the program when an allocation inconsistency is detected now takes
1310 an argument that indicates the type of failure. The new function
1311 `mprobe' lets you request a consistency check for a particular block at
1312 any time (checks are normally done only when you call `free' or `realloc'
1313 on a block).
1315 * It is now possible to easily cross-compile the C library, building on one
1316 system a library to run on another machine and/or operating system. All
1317 you need to do is set the variable `HOST_CC' in `configparms' to the
1318 native compiler for programs to run on the machine you are building on (a
1319 few generator programs are used on Unix systems); set `CC' to the
1320 cross-compiler.
1322 * The new function `fexecve' (only implemented on the GNU system) executes
1323 a program file given a file descriptor already open on the file.
1324 \f
1325 Version 1.07
1327 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1328 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1330 * You can set the variable `libprefix' in `configparms' to specify a prefix
1331 to be prepended to installed library files; this makes it easy to install
1332 the GNU C library to be linked as `-lgnuc' or whatever.
1334 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1335 copies a limited number of characters from a string, and returns the
1336 address of the last character written.
1338 * You no longer need to check for whether the installed `stddef.h' is
1339 compatible with the GNU C library. configure now checks for you.
1341 * You can now define a per-stream `fileno' function to convert the
1342 stream's cookie into an integral file descriptor.
1344 * ``malloc (0)'' no longer returns a null pointer. Instead, it
1345 allocates zero bytes of storage, and returns a unique pointer which
1346 you can pass to `realloc' or `free'. The behavior is undefined if
1347 you dereference this pointer.
1349 * The C library now runs on Sony NEWS m68k machines running either
1350 NewsOS 3 or NewsOS 4.
1352 * The new `syscall' function is a system-dependent primitive function
1353 for invoking system calls. It has the canonical behavior on Unix
1354 systems, including unreliable return values for some calls (such as
1355 `pipe', `fork' and `getppid').
1357 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
1358 to `EAGAIN', which is the preferred name. On systems whose kernels
1359 use two distinct codes, the C library now translates EWOULDBLOCK to
1360 EAGAIN in every system call function.
1361 \f
1362 Version 1.06
1364 * The GNU C Library Reference Manual is now distributed with the library.
1365 `make dvi' will produce a DVI file of the printed manual.
1366 `make info' will produce Info files that you can read on line using C-h i
1367 in Emacs or the `info' program.
1368 Please send comments on the manual to bug-glibc-manual@gnu.org.
1370 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
1372 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
1374 * Jason Merrill has contributed a port to the Sequent Symmetry running
1375 Dynix version 3 (i386-sequent-dynix).
1377 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
1378 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
1380 * New function `memory_warnings' lets you arrange to get warnings when
1381 malloc is running out of memory to allocate, like Emacs gives you.
1383 * The C library now contains the relocating allocator used in Emacs 19 for
1384 its editing buffers. This allocator (ralloc) minimizes allocation
1385 overhead and fragmentation by moving allocated regions around whenever it
1386 needs to. You always refer to a ralloc'd region with a "handle" (a
1387 pointer to a pointer--an object of type `void **').
1389 * There is a new `printf' format: `%m' gives you the string corresponding
1390 to the error code in `errno'.
1392 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
1393 or `%[' conversion, but instead of filling in a fixed-sized buffer you
1394 pass, the `a' modifier says to fill in a `char **' you pass with a
1395 malloc'd string.
1397 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
1398 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
1399 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
1401 * `mkstemp' is a traditional Unix function to atomically create and open a
1402 uniquely-named temporary file.
1403 \f
1404 Version 1.05
1406 * The standard location for the file that says what the local timezone is
1407 has changed again. It is now `/usr/local/etc/localtime' (or more
1408 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
1410 * The distribution no longer contains any files with names longer than 14
1411 characters.
1413 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
1414 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
1416 * New functions `ttyslot' and `syslog' from 4.4 BSD.
1417 \f
1418 Version 1.04
1420 * The configuration process has changed quite a bit. The `configure'
1421 script is now used just like the configuration scripts for other GNU
1422 packages. The `sysdeps' directory hierarchy is much rearranged.
1423 The file `INSTALL' explains the new scheme in detail.
1425 * The header files no longer need to be processed into ANSI C and
1426 traditional C versions. There is just one set of files to install, and
1427 it will work with ANSI or old C compilers (including `gcc -traditional').
1429 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
1430 MIPS DECStation running Ultrix 4.
1432 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
1433 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
1434 made itself into a shared library.
1436 * Yet further improved support for the i386, running 4.3 BSD-like systems
1437 (such as Mach 3 with the Unix single-server), or System V.
1439 * New function `strncasecmp' to do case-insensitive string comparison
1440 with limited length.
1442 * New function `strsep' is a reentrant alternative to `strtok'.
1444 * New functions `scandir' and `alphasort' for searching directories.
1446 * New function `setenv' is a better interface to `putenv'.
1448 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
1449 function for traversing a directory tree.
1451 * The GNU obstack package is now also part of the C library.
1452 The new function `open_obstack_stream' creates a stdio stream that
1453 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
1454 formatted output directly to an obstack.
1456 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
1457 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
1459 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
1461 * The new functions `strfry' and `memfrob' do mysterious and wonderful
1462 things to your strings.
1464 * There are some new test programs: test-fseek, testmb, and testrand.
1466 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
1467 These ports are not finished, but are a good starting place for really
1468 supporting those systems.
1470 * `/etc/localtime' is now the standard location for the file that says what
1471 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
1472 This follows the general principle that `/etc' is the place for all local
1473 configuration files.
1475 * The C library header files now use `extern "C"' when used by the C++
1476 compiler, so the C library should now work with C++ code.
1478 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
1479 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
1480 in <strings.h>.)
1482 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
1483 function which uses the `merge sort' algorithm, and is said to be
1484 significantly faster than the old GNU `qsort' function. Merge sort is
1485 now the standard `qsort' function. The new algorithm can require a lot
1486 of temporary storage; so, the old sorting function is called when the
1487 required storage is not available.
1489 * The C library now includes Michael Glad's Ultra Fast Crypt, which
1490 provides the Unix `crypt' function, plus some other entry points.
1492 * The code and header files taken from 4.4 BSD have been updated with the
1493 latest files released from Berkeley.
1494 \f
1495 ----------------------------------------------------------------------
1496 Copyright information:
1498 Copyright (C) 1992-1999,2000,2001,2002 Free Software Foundation, Inc.
1500 Permission is granted to anyone to make or distribute verbatim copies
1501 of this document as received, in any medium, provided that the
1502 copyright notice and this permission notice are preserved,
1503 thus giving the recipient permission to redistribute in turn.
1505 Permission is granted to distribute modified versions
1506 of this document, or of portions of it,
1507 under the above conditions, provided also that they
1508 carry prominent notices stating who last changed them.
1509 \f
1510 Local variables:
1511 version-control: never
1512 End: