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1 GNU C Library NEWS -- history of user-visible changes. 2005-3-19
2 Copyright (C) 1992-2004, 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 2.3.4
20 * Support for RFC 3678. Real implementations exist only for Linux so far.
21 Implemented by Ulrich Drepper.
23 * nscd can now cache entries persistently. Expiring entries are reloaded.
24 For speedups the cache can be shared in memory with client processes.
25 Implemented by Ulrich Drepper.
27 * nscd can now perform SELinux checks.
28 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
30 * getaddrinfo queries are now cached. Canonical name lookup is performed
31 efficiently.
32 Implemented by Ulrich Drepper.
34 * The nothrow function attribute is used when headers are used by gcc when
35 compiling C code. This can avoid significant amounts of exception
36 handling data.
38 * The malloc functions perform more error checking and are stricter when
39 it comes to reacting on errors. The default action is to terminate
40 the process after showing an error message. Implemented by Ulrich Drepper.
42 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
43 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
45 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
46 namespaces using the new function dlmopen(). This feature is of course,
47 like most other dynamic loading functionality, not available in statically
48 linked applications. Implemented by Ulrich Drepper.
50 * Low-overhead boundary checking variants of string and some stdio functions
51 were added. These are to be used in conjunction with a gcc patch by
52 Jakub Jelinek which adds calls to these functions if possible.
53 Implemented by Jakub Jelinek and Ulrich Drepper.
55 * Old code for several operating systems and machine architectures that
56 have not been in working condition in a long time have been removed from
57 the main source tree maintained by the GNU C Library's maintainers.
58 These files are now reside in the separate `ports' source module
59 that is usable as an add-on when building the library.
60 \f
61 Version 2.3.3
63 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
64 interrogate the dynamic linker, compatible with the Solaris interface.
66 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
67 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
69 * getifaddrs now uses the netlink interface on Linux to get its information.
70 Implemented by Thorsten Kukuk.
72 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
73 Implemented by Ulrich Drepper.
75 * support for non-executable stacks on x86 has been added. Changes mostly
76 by Roland McGrath.
78 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
79 and Ulrich Drepper.
81 * getaddrinfo now performs destination address selection according to
82 RFC 3484.
83 \f
84 Version 2.3.2
86 * Thread-safe interfaces for many functions that access locale data
87 were added in version 2.3, but these features were omitted from NEWS.
88 Many functions have variants with an `_l' suffix that take a `locale_t'
89 object as a parameter rather than consulting the current locale.
90 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
91 create and maintain `locale_t' objects. Additionally, the new function
92 `uselocale' sets "the current locale" (as used by functions not so
93 parameterized) set for an individual thread. These features were added
94 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
96 * The functions getresuid, getresgid, setresuid, and setresgid, which
97 have long been available on Linux, are now declared in <unistd.h>
98 and are now also available on the Hurd.
100 * ELF thread-local storage support (TLS) now works on x86-64.
102 * The new dynamic string token $LIB is expanded in shared library names.
103 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
105 * Aldy Hernandez contributed complete software floating point support for
106 PowerPC machines with no FPU.
108 * fexecve is implemented on Linux.
110 * The `btowc' function should work at least twice as fast due to
111 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
113 * With approriate thread add-ons cancelable functions are now implemented
114 in libc.so as well. No need to call the function in libpthread. This
115 change allowed to finally disable the incorrect and expensive handling
116 of weak definition in ld.so.
118 * Yet more PLT entries in libc.so have been removed. We finally arrived
119 at the bare minimum. Startup times improved appropriately.
121 * Support for the new Linux/x86 system call interface was added. The
122 AT_SYSINFO auxiliary vector entry is recognized and handled.
123 \f
124 Version 2.3
126 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
127 charsets.
129 * iconv (the program and the interface) now accepts empty names (excluding
130 options like //TRANSLIT) to mean "use charset of current locale".
132 * localedef can now transliterate characters in strings which are not in
133 the provided charmap. The information from the input locale is used.
135 * Prelinking support was added for ELF targets. This requires additional
136 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
138 * Read-only stdio streams now use mmap to speed up operation by eliminating
139 copying and buffer underflows. To use add 'm' to the mode string of
140 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
142 * The malloc functions were completely rewritten by Wolfram Gloger based
143 on Doug Lea's malloc-2.7.0.c.
145 * Isamu Hasegawa contributed a completely new and POSIX-conformant
146 implementation of regex.
148 * Bruno Haible upgraded the iconv and locale implementation to support
149 Unicode 3.2.
151 * Contents of the LC_* and LANG environment variables in the CEN style are
152 not recognized anymore. It never was used. Change by Ulrich Drepper.
154 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
155 thread-local storage (TLS) ABI on some platforms.
156 Changes by Ulrich Drepper. SH support by Kaz Kojima.
158 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
159 EUC-JISX0213, and TSCII.
161 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
162 BSD-compatible interface for getting all network interface addresses.
163 Implementation for IPv4 by Roland McGrath.
165 * Loading of locale data is faster due to the introduction of a locale
166 archive. Implemented by Roland McGrath and Ulrich Drepper.
168 * Startup times are significantly reduced by not using exported functions
169 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
170 and Ulrich Drepper.
172 * Steven Munroe contributed a port to PowerPC64/Linux.
173 \f
174 Version 2.2.6
176 * The Hurd now uses the GNU libio implementation of stdio rather than the
177 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
179 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
180 with the same behavior as the Linux system call of the same name.
181 \f
182 Version 2.2.5
184 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
185 128-bit long double format.
187 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
188 IBM1161, and IBM1162 charsets.
190 * Andreas Jaeger contributed a port to x86-64/Linux.
192 * Peter Bruin contributed a port to PowerPC/Hurd.
194 * libc functions using I/O streams now can handle wide-oriented streams
195 as well.
197 * optimizations in the dynamic linker. Binaries created by recent binutils
198 versions start up quicker due to reduced time spent on relocations.
200 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
201 \f
202 Version 2.2.4
204 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
205 asinh, atanh, j0 for the 128-bit long double format.
207 * Bruno Haible updated all the code handling Unicode in some form to
208 support Unicode 3.1.
210 * Speed of regex for single-byte locales is back to previous levels.
211 Patch by Isamu Hasegawa.
213 * Alpha, SPARC, and IA-64 now also using floating stacks.
215 * Startup time of internationalized applications greatly improved through
216 iconv cache. Use iconvconfig to generate the cache file.
217 Contributed by Ulrich Drepper.
219 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
220 severe performance problems. Patch by David Mosberger.
222 * The Hurd port got a lot more functionality like AIO, various stdio
223 extensions, etc. Mainly done by Roland McGrath.
225 * mtrace can now lookup symbols in shared libraries.
226 \f
227 Version 2.2.3
229 * Intel's IA-64 math library is largely integrated. It provides fast and
230 accurate implementatations for most basic and standard math functions
231 in float, double, and long double format.
233 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
234 and asin for the 96-bit long double format and asin, log, tan for the
235 128-bit long double format.
237 * The beginning of a last-bit accurate math library by IBM Haifa were added.
238 The basic double functions exist today. Contributed by Abraham Ziv
239 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
240 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
242 * An asynchronous name lookup library was added. The interface is designed
243 after POSIX AIO. The proposal was circulated beforehand to get comments.
244 No negative ones came in. Implemented by Ulrich Drepper.
246 * Port to S390/64bit contributed by Martin Schwidefsky
247 <schwidefsky@de.ibm.com>.
249 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
250 of functions for Linux/IA-64.
252 * The RPC code is now thread safe. Threads can now use the same service
253 of different services at the same time. Patch by Eric Norum
254 <eric.norum@usask.ca> with some help by Ulrich Drepper.
256 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
257 family of functions for Linux/S390.
259 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
260 of functions for Linux/x86.
262 * Port to Linux/CRIS contributed by Axis Communications.
263 \f
264 Version 2.2.2
266 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
267 we can now check for namespace violations and missing declarations. The
268 result is that almost all headers are now Unix-compliant (as defined in
269 the upcoming XPG6). The negative side is that some programs might need
270 corrections, too, if they depend on the incorrect form of the headers in
271 previous versions which defined too many symbols and included too many
272 other headers.
274 * regex now handles multibyte character sets correctly.
275 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
277 * iconv (the program) does now conform to the upcoming XPG6 and handles
278 charmaps. Instead of the charset names the path of charmaps can be
279 provided and the conversion happens based on this data.
280 Contributed by Ulrich Drepper.
282 * The locale program now provides detailed information about the installed
283 locales. While
285 locale -a
287 only lists the names of the supported locales
289 locale -a --verbose
291 provides details such as country, language, and codeset name.
292 Contributed by Ulrich Drepper.
293 \f
294 Version 2.2.1
296 * The gencat program now parses the input file according to the charset
297 selected by the LC_CTYPE category. This is important for stateful
298 character sets. To make generating catalogs easier there is a way
299 to overwrite the charset selected by the locale: before the first
300 message or $ quote line the catalog can contain a line like
302 $ codeset=ISO-8859-2
304 to select the charset (ISO-8859-2 in this case).
306 Implemented by Shinya Hanataka and Ulrich Drepper.
308 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
309 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
310 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
312 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
313 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
315 * The LANGUAGE environment variable is now ignored unless the locale is
316 changed from the default "C" locale.
318 * The usual bug fixes.
319 \f
320 Version 2.2
322 * Greg McGary added runtime support for bounds checking using gcc's
323 new -fbounded-pointers option. ix86 target is complete. PowerPC
324 is in progress.
326 * Thorsten Kukuk added secure mode support to nscd.
328 * The Berkeley db libraries have been removed.
330 Related, the nss_db module is now in a separate package since it
331 obviously requires a database library being available.
333 * Wide character I/O streams implemented by Ulrich Drepper.
335 * Functions from the extended socket API added by Ulrich Drepper.
337 * Functions feenableexcept and fedisableexcept to control the
338 behaviour of individual exceptions have been added by Andreas Jaeger.
340 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
342 * The resolver code has been updated from bind 8.2.3-T5B which supports
343 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
344 and Mark Kettenis.
346 This change could in some situations effect backward compatibility. Since
347 now `_res' is a thread-local instead of a global variable, modifying it
348 in one thread does not have any effect in other threads.
350 The resolver library was also extended to allow IPv6 as the transport
351 protocol for the requests. This work was done by Stig Venaas.
353 * Compatibility code for K&R C compilers has been removed from the
354 header files. A ISO C compiler is needed to use the library
355 (conforming to either C89 or C99 standard).
357 * Complete rewrite of the localedef program to support multibyte character
358 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
359 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
360 Implemented by Ulrich Drepper.
362 Bruno Haible significantly improved the generation and use of the data
363 structures for the wide character tables.
365 * Plural handling in gettext implemented by Ulrich Drepper.
367 * The utmp daemon has been removed.
369 * The port to MIPS-Linux has been finished by Andreas Jaeger.
371 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
372 and Yutaka Niibe.
374 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
376 * POSIX barriers implemented by Kaz Kylheku.
378 * POSIX spawn function family implemented by Ulrich Drepper.
380 * POSIX spinlocks are now available.
382 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
384 * the configure option --enable-kernel=X.Y.Z allows to strip out
385 compatibility for kernel versions before X.Y.Z. This is currently only
386 implemented for Linux.
388 * the sockaddr_in6 structure changed. The IPv6 working group added a new
389 field sin6_scope_id. This means that all programs using IPv6 should be
390 recompiled. Don't expect binary compatibility with previous glibc
391 versions.
393 * various conversion modules for IBM character sets contributed by
394 Masahide Washizawa.
396 * IA-64 port by Jes Sorensen and HJ Lu.
398 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
399 Compiling the GNU C Library for Linux/ia64
400 ******************************************
402 Please refer to the file INSTALL in the same directory as you found
403 this file for general information about configuring and compiling
404 glibc.
406 For general inquiries about glibc under Linux/ia64 please use the
407 following mailing list linux-ia64@linuxia64.org or one of the relevant
408 glibc mailing lists.
410 Recommended Tools for Compilation
411 =================================
413 In order for glibc-2.2 to build correctly on the ia64 you need at
414 least the following versions of the GNU tools (the :
416 * The Cygnus toolchain snapshot for the ia64 as of August 4
417 including the provided set of patches. It is however recommend
418 you use the October 24 toolchain snapshot or a more recent version.
420 OR alternatively you can try the following (the Cygnus toolchain is
421 the recommended solution):
423 * GCC and binutils, GAS and GNU LD out of CVS from
424 sources.redhat.com as of August 28, 2000 or later. The CVS tree
425 may require special patches to work properly on the ia64.
427 Configuring and compiling GNU Libc for Linux/ia64
428 =================================================
430 The library requires Linux kernel version 2.4.0-test4-000728 or
431 later to funtion properly. Besides that it support for debug libraries
432 is currently untested. Hence the following options
433 are required for configuring the library:
435 --disable-debug --enable-kernel=2.4.0
437 It is also important that you make sure the library picks up the
438 appropriate kernel header files, if you do not have recent enough
439 kernel headers in /usr/src/linux/include, you should use the
440 --with-headers=<path> option to specify the location.
442 As an example I personally use the following options to configure
443 the library:
445 --disable-debug
446 --disable-cvs
447 --enable-kernel=2.4.0
448 --host=ia64-linux
449 --enable-add-ons=yes
450 --prefix=/usr
451 --with-headers=/home/jes/linux/include
454 Good luck
456 Jes Sorensen <jes@linuxcare.com>,
457 November 14th, 2000
458 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
459 \f
460 Version 2.1.3
462 * bug fixes
464 \f
465 Version 2.1.2
467 * bug fixes
469 \f
470 Version 2.1.1
472 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
474 * New xdr functions are added; some rpc functions are now 64bit clean.
476 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
478 * Fixed known incompatibilities with glibc 2.0.
480 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
482 * Optimized a number of functions (especially the ELF dynamic loader).
484 * Update timezone data files.
486 * lots of charmaps corrections
488 * some new locale definitions and charmaps
490 \f
491 Version 2.1
493 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
494 conform to POSIX member type requirements. Symbol versions have been
495 adjusted as needed within the library, and for direct use by applications,
496 but there is potential for problems if third-party libraries use
497 struct timeval as part of their interface. This does not present
498 a problem for X and other "essential" system libraries.
500 * An additional locale model to support C++ Standard Library locale
501 model and probably more was implemented by Ulrich Drepper.
503 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
504 symbol level.
506 * Miles Bader provided the `argp' function family to support hierachical
507 command line argument parsing, layered on top of getopt.
509 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
511 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
512 numbers.
514 * scanf recognizes the %a and %A format for scanning floating point numbers.
516 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
517 information and interfaces for the available integer types.
519 * about 130 new math functions were added to implement the ISO C9x math
520 library.
522 * the new header <complex.h> contains definitions of the complex math
523 functions from ISO C 9X.
525 * the new header <tgmath.h> defines generic macros to use complex or
526 real valued functions.
528 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
530 * Andreas Jaeger provided a test suite for the math library.
532 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
534 * Ulrich Drepper added character set conversion functions (iconv).
536 * Optimized string functions have been added.
538 * The localedata addon is now part of glibc.
540 * An implementation of profiling shared libraries was added by Ulrich Drepper.
542 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
543 daemon for NSS (nscd).
545 Missing a better place here are some numbers on improvements. Under
546 Linux 2.1.125 un-tar-ing the kernel sources takes
548 user system wall
550 using local files 12.19s 6.88s 22.91s
552 using NIS 13.92s 8.91s 26.34s
554 using NIS & nscd 10.37s 7.34s 25.30s
556 using NIS+ 27.57s 30.37s 640.46s
558 using NIS+ & nscd 10.25s 7.83s 26.51s
560 using NIS & old nscd [1] 13.83s 8.32s 29.60s
562 Keep in mind that non-namelookup related operations dominate above times.
563 It was just a common complain that using NIS+ unpacking the kernel is
564 horribly slow.
566 [1] The old nscd implementation is not available anymore since it was
567 distributed with glibc up to version 2.0.98 and thus is now replaced.
569 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
571 * Mark Kettenis provided a Hesiod NSS module.
573 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
574 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
576 * rcmd can now handle netgroups (Dick Streefland).
578 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
579 Bambrough.
581 * Support for the IPv6 protocol has been added to the socket API, as per the
582 latest draft standards.
584 * Support for Linux 2.2 has been added.
586 * Interface changes relative to the latest 2.0.x release:
587 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
588 addseverity NEW: Unix98
589 alphasort64 NEW: LFS
590 argp_err_exit_status NEW: argp, GNU ext
591 argp_error NEW: argp, GNU ext
592 argp_failure NEW: argp, GNU ext
593 argp_help NEW: argp, GNU ext
594 argp_parse NEW: argp, GNU ext
595 argp_program_bug_address NEW: argp, GNU ext
596 argp_program_version NEW: argp, GNU ext
597 argp_program_version_hook NEW: argp, GNU ext
598 argp_state_help NEW: argp, GNU ext
599 argp_usage NEW: argp, GNU ext
600 authdes_create NEW: Secure RPC
601 authdes_getucred NEW: Secure RPC
602 authdes_pk_create NEW: Secure RPC
603 backtrace NEW: GNU ext.
604 backtrace_symbols NEW: GNU ext.
605 backtrace_symbols_fd NEW: GNU ext.
606 cacos NEW: ISO C 9x
607 cacosf NEW: ISO C 9x
608 cacosh NEW: ISO C 9x
609 cacoshf NEW: ISO C 9x
610 cacoshl NEW: ISO C 9x
611 cacosl NEW: ISO C 9x
612 capget NEW: kernel
613 capset NEW: kernel
614 carg NEW: ISO C 9x
615 cargf NEW: ISO C 9x
616 cargl NEW: ISO C 9x
617 casin NEW: ISO C 9x
618 casinf NEW: ISO C 9x
619 casinh NEW: ISO C 9x
620 casinhf NEW: ISO C 9x
621 casinhl NEW: ISO C 9x
622 casinl NEW: ISO C 9x
623 catan NEW: ISO C 9x
624 catanf NEW: ISO C 9x
625 catanh NEW: ISO C 9x
626 catanhf NEW: ISO C 9x
627 catanhl NEW: ISO C 9x
628 catanl NEW: ISO C 9x
629 cbc_crypt NEW: Secure RPC
630 ccos NEW: ISO C 9x
631 ccosf NEW: ISO C 9x
632 ccosh NEW: ISO C 9x
633 ccoshf NEW: ISO C 9x
634 ccoshl NEW: ISO C 9x
635 ccosl NEW: ISO C 9x
636 cexp NEW: ISO C 9x
637 cexpf NEW: ISO C 9x
638 cexpl NEW: ISO C 9x
639 cimag NEW: ISO C 9x
640 cimagf NEW: ISO C 9x
641 cimagl NEW: ISO C 9x
642 clearerr_locked REMOVED
643 clntunix_create NEW: sunrpc ext
644 clog NEW: ISO C 9x
645 clog10 NEW: ISO C 9x
646 clog10f NEW: ISO C 9x
647 clog10l NEW: ISO C 9x
648 clogf NEW: ISO C 9x
649 clogl NEW: ISO C 9x
650 conj NEW: ISO C 9x
651 conjf NEW: ISO C 9x
652 conjl NEW: ISO C 9x
653 cpow NEW: ISO C 9x
654 cpowf NEW: ISO C 9x
655 cpowl NEW: ISO C 9x
656 cproj NEW: ISO C 9x
657 cprojf NEW: ISO C 9x
658 cprojl NEW: ISO C 9x
659 creal NEW: ISO C 9x
660 crealf NEW: ISO C 9x
661 creall NEW: ISO C 9x
662 creat64 NEW: LFS
663 csin NEW: ISO C 9x
664 csinf NEW: ISO C 9x
665 csinh NEW: ISO C 9x
666 csinhf NEW: ISO C 9x
667 csinhl NEW: ISO C 9x
668 csinl NEW: ISO C 9x
669 csqrt NEW: ISO C 9x
670 csqrtf NEW: ISO C 9x
671 csqrtl NEW: ISO C 9x
672 ctan NEW: ISO C 9x
673 ctanf NEW: ISO C 9x
674 ctanh NEW: ISO C 9x
675 ctanhf NEW: ISO C 9x
676 ctanhl NEW: ISO C 9x
677 ctanl NEW: ISO C 9x
678 des_setparity NEW: Secure RPC
679 ecb_crypt NEW: Secure RPC
680 endutxent NEW: Unix98
681 exp10 NEW: ISO C 9x
682 exp10f NEW: ISO C 9x
683 exp10l NEW: ISO C 9x
684 exp2 NEW: ISO C 9x
685 exp2f NEW: ISO C 9x
686 exp2l NEW: ISO C 9x
687 fattach NEW: STREAMS
688 fdetach NEW: STREAMS
689 fdim NEW: ISO C 9x
690 fdimf NEW: ISO C 9x
691 fdiml NEW: ISO C 9x
692 feclearexcept NEW: ISO C 9x
693 fegetenv NEW: ISO C 9x
694 fegetexceptflag NEW: ISO C 9x
695 fegetround NEW: ISO C 9x
696 feholdexcept NEW: ISO C 9x
697 feof_locked REMOVED
698 feraiseexcept NEW: ISO C 9x
699 ferror_locked REMOVED
700 fesetenv NEW: ISO C 9x
701 fesetexceptflag NEW: ISO C 9x
702 fesetround NEW: ISO C 9x
703 fetestexcept NEW: ISO C 9x
704 feupdateenv NEW: ISO C 9x
705 fflush_locked REMOVED
706 ffsl NEW: GNU ext.
707 ffsll NEW: GNU ext.
708 fgetpos64 NEW: LFS
709 fgets_unlocked NEW: GNU ext.
710 fileno_locked REMOVED
711 fma NEW: ISO C 9x
712 fmaf NEW: ISO C 9x
713 fmal NEW: ISO C 9x
714 fmax NEW: ISO C 9x
715 fmaxf NEW: ISO C 9x
716 fmaxl NEW: ISO C 9x
717 fmin NEW: ISO C 9x
718 fminf NEW: ISO C 9x
719 fminl NEW: ISO C 9x
720 fmtmsg NEW: Unix98
721 fopen64 NEW: LFS
722 fputc_locked REMOVED
723 fputs_unlocked NEW: GNU ext.
724 fread_unlocked NEW: GNU ext.
725 freopen64 NEW: LFS
726 fseeko NEW: Unix98
727 fsetpos64 NEW: LFS
728 fstatfs64 NEW: LFS
729 fstatvfs NEW: Unix98
730 fstatvfs64 NEW: LFS
731 ftello NEW: Unix98
732 ftello64 NEW: LFS
733 ftruncate64 NEW: LFS
734 ftw64 NEW: LFS
735 fwrite_unlocked NEW: GNU ext.
736 gai_strerror NEW: IPv6
737 gamma_r REMOVED
738 gammaf_r REMOVED
739 gammal_r REMOVED
740 getchar_locked REMOVED
741 getdate NEW: Unix98
742 getdate_err NEW: Unix98
743 getdate_r NEW: GNU ext.
744 getmsg NEW: STREAMS
745 getnameinfo NEW: IPv6
746 getnetname NEW: Secure RPC
747 getpmsg NEW: STREAMS
748 getpt NEW: Unix98 PTY
749 getrlimit64 NEW: LFS
750 getutxent NEW: Unix98
751 getutxid NEW: Unix98
752 getutxline NEW: Unix98
753 glob64 NEW: GNU ext.
754 globfree64 NEW: GNU ext.
755 gnu_get_libc_release NEW: GNU ext.
756 gnu_get_libc_version NEW: GNU ext.
757 grantpt NEW: Unix98 PTY
758 host2netname NEW: Secure RPC
759 iconv NEW: iconv
760 iconv_close NEW: iconv
761 iconv_open NEW: iconv
762 if_freenameindex NEW: IPv6
763 if_indextoname NEW: IPv6
764 if_nameindex NEW: IPv6
765 if_nametoindex NEW: IPv6
766 in6addr_any NEW: IPv6
767 in6addr_loopback NEW: IPv6
768 inet6_isipv4mapped NEW: IPv6
769 isastream NEW: STREAMS
770 iswblank NEW: GNU ext.
771 key_decryptsession NEW: Secure RPC
772 key_decryptsession_pk NEW: Secure RPC
773 key_encryptsession NEW: Secure RPC
774 key_encryptsession_pk NEW: Secure RPC
775 key_gendes NEW: Secure RPC
776 key_get_conv NEW: Secure RPC
777 key_secretkey_is_set NEW: Secure RPC
778 key_setnet NEW: Secure RPC
779 key_setsecret NEW: Secure RPC
780 llrint NEW: ISO C 9x
781 llrintf NEW: ISO C 9x
782 llrintl NEW: ISO C 9x
783 llround NEW: ISO C 9x
784 llroundf NEW: ISO C 9x
785 llroundl NEW: ISO C 9x
786 log2 NEW: ISO C 9x
787 log2f NEW: ISO C 9x
788 log2l NEW: ISO C 9x
789 lrint NEW: ISO C 9x
790 lrintf NEW: ISO C 9x
791 lrintl NEW: ISO C 9x
792 lround NEW: ISO C 9x
793 lroundf NEW: ISO C 9x
794 lroundl NEW: ISO C 9x
795 lseek64 NEW: LFS
796 makecontext NEW: Unix98
797 mempcpy NEW: GNU ext.
798 mmap64 NEW: LFS
799 moncontrol REMOVED
800 modify_ldt NEW: kernel
801 nan NEW: ISO C 9x
802 nanf NEW: ISO C 9x
803 nanl NEW: ISO C 9x
804 nearbyint NEW: ISO C 9x
805 nearbyintf NEW: ISO C 9x
806 nearbyintl NEW: ISO C 9x
807 netname2host NEW: Secure RPC
808 netname2user NEW: Secure RPC
809 nexttoward NEW: ISO C 9x
810 nexttowardf NEW: ISO C 9x
811 nexttowardl NEW: ISO C 9x
812 nftw NEW: Unix98
813 nftw64 NEW: LFS
814 open64 NEW: LFS
815 passwd2des NEW: Secure RPC
816 pow10 NEW: GNU ext.
817 pow10f NEW: GNU ext.
818 pow10l NEW: GNU ext.
819 pread NEW: Unix98
820 pread64 NEW: LFS
821 printf_size NEW: GNU ext.
822 printf_size_info NEW: GNU ext.
823 profil_counter REMOVED
824 pthread_mutexattr_getkind_np REPLACED
825 pthread_mutexattr_setkind_np REPLACED
826 ptsname NEW: Unix98 PTY
827 ptsname_r NEW: Unix98 PTY
828 putc_locked REMOVED
829 putchar_locked REMOVED
830 putgrent NEW: GNU ext.
831 putmsg NEW: STREAMS
832 putpmsg NEW: STREAMS
833 pututxline NEW: Unix98
834 pwrite NEW: Unix98
835 pwrite64 NEW: LFS
836 readdir64 NEW: LFS
837 readdir64_r NEW: LFS
838 remquo NEW: ISO C 9x
839 remquof NEW: ISO C 9x
840 remquol NEW: ISO C 9x
841 round NEW: ISO C 9x
842 roundf NEW: ISO C 9x
843 roundl NEW: ISO C 9x
844 rtime NEW: GNU ext.
845 scalbln NEW: ISO C 9x
846 scalblnf NEW: ISO C 9x
847 scalblnl NEW: ISO C 9x
848 scandir64 NEW: LFS
849 sendfile NEW: kernel
850 setcontext NEW: Unix98
851 setrlimit64 NEW: LFS
852 setutxent NEW: Unix98
853 sighold NEW: Unix98
854 sigignore NEW: Unix98
855 sigqueue NEW: POSIX.1b
856 sigrelse NEW: Unix98
857 sigset NEW: POSIX.1b
858 sigtimedwait NEW: POSIX.1b
859 sigwaitinfo NEW: POSIX.1b
860 sincos NEW: GNU ext.
861 sincosf NEW: GNU ext.
862 sincosl NEW: GNU ext.
863 statfs64 NEW: LFS
864 statvfs NEW: Unix98
865 statvfs64 NEW: LFS
866 strcasestr NEW: GNU ext.
867 strtoimax NEW: ISO C 9x
868 strtoumax NEW: ISO C 9x
869 strverscmp NEW: GNU ext.
870 svcauthdes_stats NEW: Secure RPC
871 svcunix_create NEW: sunrpc etx
872 svcunixfd_create NEW: sunrpc ext
873 swapcontext NEW: Unix98
874 tcgetsid NEW: Unix98 PTY
875 tdestroy NEW: GNU ext.
876 tgamma NEW: ISO C 9x
877 tgammaf NEW: ISO C 9x
878 tgammal NEW: ISO C 9x
879 tmpfile64 NEW: LFS
880 trunc NEW: ISO C 9x
881 truncate64 NEW: LFS
882 truncf NEW: ISO C 9x
883 truncl NEW: ISO C 9x
884 umount2 NEW: kernel
885 unlockpt NEW: Unix98 PTY
886 updwtmpx NEW: Unix98
887 user2netname NEW: Secure RPC
888 utmpxname NEW: Unix98
889 versionsort NEW: GNU ext.
890 versionsort64 NEW: GNU ext.
891 waitid NEW: Unix98
892 wcscasecmp NEW: GNU ext.
893 wcsncasecmp NEW: GNU ext.
894 wcsnlen NEW: GNU ext.
895 wcstoimax NEW: ISO C 9x
896 wcstoll NEW: ISO C 9x
897 wcstoull NEW: ISO C 9x
898 wcstoumax NEW: ISO C 9x
899 wcswcs NEW: Unix98
900 wordexp NEW: POSIX.2
901 wordfree NEW: POSIX.2
902 write_profiling REMOVED
903 xdecrypt NEW: Secure RPC
904 xdr_authdes_cred NEW: Secure RPC
905 xdr_authdes_verf NEW: Secure RPC
906 xdr_cryptkeyarg NEW: Secure RPC
907 xdr_cryptkeyarg2 NEW: Secure RPC
908 xdr_cryptkeyres NEW: Secure RPC
909 xdr_getcredres NEW: Secure RPC
910 xdr_key_netstarg NEW: Secure RPC
911 xdr_key_netstres NEW: Secure RPC
912 xdr_keybuf NEW: Secure RPC
913 xdr_keystatus NEW: Secure RPC
914 xdr_netnamestr NEW: Secure RPC
915 xdr_sizeof NEW: Secure RPC
916 xdr_unixcred NEW: sunrpc ext
917 xencrypt NEW: Secure RPC
918 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
919 \f
920 Version 2.0.6
922 * more bug fixes
924 \f
925 Version 2.0.5
927 * more bug fixes
929 * inet_ntoa is thread-safe
931 * updwtmp is moved from libutil to libc
933 * rewrite of cbrt function
935 * update of timezone data
936 \f
937 Version 2.0.4
939 * more bug fixes
940 \f
941 Version 2.0.3
943 * more bug fixes
944 \f
945 Version 2.0.2
947 * more bug fixes
949 * add atoll function
951 * fix complex problems in Berkeley DB code
953 * fix math functions
954 \f
955 Version 2.0.1
957 * fixed lots of header problems (especially Linux/GNU specific)
959 * dynamic loader preserves all registers
961 * Roland McGrath provided support for handling of auxiliary objects in
962 the ELF dynamic loader.
964 * support for parallel builds is improved
965 \f
966 Version 2.0
968 * GNU extensions are no longer declared by default. To enable them you
969 must define the macro `_GNU_SOURCE' in your program or compile with
970 `-D_GNU_SOURCE'.
972 * The library has changed from using GNU ld symbol aliases to using weak
973 symbols where available. The ELF object file format supports weak
974 symbols; GNU ld also supports weak symbols in the a.out format. (There
975 is also now support for other GNU ld extensions in ELF. Use the
976 `--with-elf' option to configure to indicate you have ELF, and
977 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
978 of many files which contained only symbol aliases, reducing the size of
979 the source and the compiled library; many other files were renamed to
980 less cryptic names previously occupied by the symbol alias files.
981 There is a new header file <elf.h> for programs which operate on
982 files in the ELF format.
984 * Converted to Autoconf version 2, so `configure' has more options.
985 Run `configure --help' to see the details.
987 * The library can now be configured to build profiling, highly-optimized
988 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
989 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
990 `configure' enable building these extra libraries. The shared library is
991 built by default when using both ELF and GNU ld. When shared libraries
992 are enabled, the new library `-ldl' is available for arbitrary run-time
993 loading of shared objects; its interface is defined in <dlfcn.h>. The
994 new header file <link.h> gives access to the internals of the run-time
995 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
996 application of same name on other systems and it provides information
997 about dynamically linked binaries.
999 * The C library now provides the run-time support code for profiling
1000 executables compiled with `-pg'. Programs can control the profiling code
1001 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1002 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1003 the support for this file format was contributed by David Mosberger-Tang.
1005 * The math code has been replaced with a math library based on fdlibm from
1006 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1007 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1008 functions. The math functions now reside in a separate library, so
1009 programs using them will need to use `-lm' their linking commands.
1011 * John C. Bowman contributed optimized ix87 assembler inline functions.
1013 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1014 mechanism similar to that found in Solaris 2. This is now used for the
1015 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1016 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1017 file controls what services are used for each individual database. This
1018 works by loading shared libraries with names specified in `nsswitch.conf',
1019 so service modules can be changed or added at any time without even
1020 relinking any program. Currently there are the file, db, and NIS based
1021 NSS services available.
1023 * The new functions `strtoq' and `strtouq' parse integer values from
1024 strings, like `strtol' and `strtoul', but they return `long long int' and
1025 `unsigned long long int' values, respectively (64-bit quantities).
1027 * The new functions `strtof' and `strtold' parse floating-point values from
1028 strings, like `strtod', but they return `float' and `long double' values,
1029 respectively (on some machines `double' and `long double' are the same).
1031 * Ulrich Drepper has contributed new implementations of the floating-point
1032 printing and reading code used in the `printf' family of functions and
1033 `strtod', `strtof', and `strtold'. These new functions are perfectly
1034 accurate, and much faster than the old ones.
1036 * The implementation of the POSIX locale model was completely rewritten by
1037 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1038 to compile the POSIX locale definition.
1040 * The former dummy implementations of the strcoll and strxfrm function are
1041 now replaced by fully functional code contributed by Ulrich Drepper. The
1042 collation information comes from the POSIX locale definitions.
1044 * The new header <langinfo.h> defines an interface for accessing
1045 various locale-dependent data (using the locale chosen with `setlocale').
1047 * Ulrich Drepper has contributed a new suite of functions for operation on
1048 wide-character and multibyte-character strings, in <wchar.h>;
1049 and classification and case conversion of wide characters, in <wctype.h>.
1050 These new functions are conforming to the ISO C, Amendement 1 specification.
1052 * There is now a second implementation of the standard I/O library available.
1053 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1054 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1056 * You can now use positional parameter specifications in format strings
1057 for the `printf' and `scanf' families of functions. For example,
1058 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1059 ``Number 6, Mr Jones''. This is mainly useful when providing different
1060 format strings for different languages, whose grammars may dictate
1061 different orderings of the values being printed. To support this
1062 feature, the interface for `register_printf_handler' has changed; see
1063 the header file <printf.h> for details.
1065 * The `printf' and `scanf' families of functions now understand a new
1066 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1067 to group numbers as indicated by the locale; for `scanf' and friends, this
1068 says to accept as valid only a number with all the proper grouping
1069 separators in the right places. In the default "C" locale, numbers are
1070 not grouped; but locales for specific countries will define the usual
1071 conventions (i.e. separate thousands with `,' in the US locale).
1073 * The pgrp functions have been regularized, slightly incompatibly but much
1074 less confusingly. The core functions are now `getpgid' and `setpgid',
1075 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1076 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1077 provided for compatibility. There is no longer an incompatible `getpgrp'
1078 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1080 * The new header file <fts.h> and suite of functions simplify programs that
1081 operate on directory trees. This code comes from 4.4 BSD.
1083 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1084 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1085 NSS scheme used in glibc.
1087 * There is a new malloc debugging hook `__memalign_hook'.
1089 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1090 `unsigned int' in <sys/types.h>. These are for compatibility only and
1091 their use is discouraged.
1093 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1094 done differently, so that it works even without GNU ld.
1096 * New function `euidaccess' checks allowed access to a file like `access',
1097 but using the effective IDs instead of the real IDs.
1099 * The time zone data files have been updated for the latest and greatest
1100 local time conventions of the countries of the world.
1102 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1103 see <dirent.h>.
1105 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1106 for formatting floating-point numbers. They are provided only for
1107 compatibility; new programs should use `sprintf' instead. There are
1108 also equivalent function for the `long double' floating-point type and
1109 all functions also exist in a reentrant form.
1111 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1112 functions for maintaining the login-record files (primarily of use to
1113 system programs such as `login'), and convenient functions for
1114 allocating and initializing a pseudo-terminal (pty) device.
1116 * Ulrich Drepper has contributed new support for System V style
1117 shared memory and IPC on systems that support it.
1119 * Ulrich Drepper has contributed several miscellaneous new functions found
1120 in System V: The `hsearch' family of functions provide an effective
1121 implementation of hash tables; `a64l' and `l64a' provide a very simple
1122 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1123 number generator.
1125 * Ulrich Drepper has contributed new reentrant counterparts for the
1126 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1128 * Ulrich Drepper has contributed new, highly-optimized versions of several
1129 string functions for the i486/Pentium family of processors.
1131 * Ulrich Drepper has updated the Linux-specific code, based largely
1132 on work done in Hongjiu Lu's version of GNU libc for Linux.
1133 The GNU library now supports Linux versions 2.0.10 and later,
1134 using the ELF object file format (i[3456]86-*-linux).
1136 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1138 * David Mosberger-Tang and Richard Henderson have ported the C library
1139 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1140 dynamic linking support for ELF/Alpha.
1142 * Richard Henderson contributed several Alpha optimized assembler function
1143 for arithmetic and string handling.
1145 * Ulrich Drepper has contributed a new set of message catalog functions to
1146 support multiple languages using the <libintl.h> interface, for use with
1147 his new package GNU gettext. Translation volunteers have contributed
1148 catalogs of the library's messages in Spanish, German, and Korean.
1150 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1151 program and the `catgets' function for reading the catalog files it
1152 creates. (The <libintl.h> interface is preferred; we include the
1153 <nl_types.h> interface using `catgets' only for source compatibility with
1154 programs already written to use it.)
1156 * New header file <values.h> gives SVID-compatible names for <limits.h>
1157 constants.
1159 * Various new macros, declarations, and small header files for compatibility
1160 with 4.4 BSD.
1162 * New function `group_member' is a convenient way to check if a process has
1163 a given effective group ID.
1165 * When using GCC 2.7 and later, the socket functions are now declared in a
1166 special way so that passing an argument of type `struct sockaddr_in *',
1167 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1168 `struct sockaddr *' type, does not generate a type-clash warning.
1170 * New function `error' declared in header file <error.h> is a convenient
1171 function for printing error messages and optionally exiting; this is the
1172 canonical function used in GNU programs. The new functions `err', `warn',
1173 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1174 doing the same thing.
1176 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1177 POSIX.2 `glob' function to do ~ and {...} expansion.
1179 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1180 `clearenv' which is used in POSIX.9 is also available.
1182 * New function `getsid' returns session ID number on systems that support it.
1184 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1185 files <db.h> and <mpool.h> provide a rich set of functions for several
1186 types of simple databases stored in memory and in files, and <ndbm.h> is
1187 an old `ndbm'-compatible interface using the `db' functions. Link with
1188 `-ldb' to get these functions.
1190 * New macro `strdupa' copies a string like `strdup', but uses local stack
1191 space from `alloca' instead of dynamic heap space from `malloc'.
1193 * New function `strnlen' is like `strlen' but searches only a given maximum
1194 number of characters for the null terminator. `stpncpy', `strndup' and
1195 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1196 function.
1198 * New function `statfs' in header <sys/statfs.h>.
1200 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1201 provide convenient functions for operating on blocks of null-terminated
1202 strings.
1204 * A new suite of functions in <utmp.h> handle all the details of reading
1205 and writing the utmp file.
1207 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1208 Thorsten Kukuk.
1210 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1211 completely POSIX compliant and also implemented the extended functionality
1212 to handle alternate digit representation and alternate era date formats.
1214 * Ulrich Drepper provided an implementation of the `strptime' function
1215 defined in XPG4.2 which transforms a string into a `struct tm' value.
1217 * Paul Eggert provided the tzselect shell script as part of the timezone
1218 code. The shell script makes it easy to select the correct timezone
1219 specification.
1221 * The implementation of the malloc family of functions is completely replaced
1222 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1223 The implementation uses the mmap function (if available) and it is
1224 optimized for the use in multi threaded programs.
1226 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1227 functions. This new functionality is usable by specifying a special
1228 salt string and it is compatible with implementation on *BSD systems.
1230 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1231 `getsubopt' to handle second level command line options, `bsd_signal'
1232 to access BSD style `signal' functionality, the obsolete `regexp' style
1233 expression matcher.
1235 * the `lchown' function is available on system which support this
1236 functionality.
1238 * The implementation of the shadow password handling function was contributed
1239 by Ulrich Drepper.
1241 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1243 * POSIX.1g support was added. The <sys/select.h> header is available,
1244 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1245 implementation of `getaddrinfo'.
1246 \f
1247 Version 1.09
1249 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1251 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1252 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1254 * The new function `daemon' from 4.4 BSD is useful for server programs that
1255 want to put themselves in the background.
1257 * Joel Sherrill has contributed support for several standalone boards that
1258 run without an operating system.
1260 * `printf', `scanf' and friends now accept a `q' type modifier for long
1261 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1263 * All of the code taken from BSD (notably most of the math and networking
1264 routines) has been updated from the BSD 4.4-Lite release.
1266 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1268 * The new functions `getdomainname' and `setdomainname' fetch or change the
1269 YP/NIS domain name. These are system calls which exist on systems which
1270 have YP (aka NIS).
1272 * The time zone data files have been updated for the latest international
1273 conventions.
1275 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1276 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1277 \f
1278 Version 1.08
1280 * The C library now includes support for Sun RPC, from Sun's free
1281 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1282 are included. (There is still no support for YP.)
1284 * Tom Quinn has contributed a port of the C library to SGI machines running
1285 Irix 4 (mips-sgi-irix4).
1287 * The new `lockf' function is a simplified interface to the locking
1288 facilities of `fcntl', included for compatibility.
1290 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1292 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1294 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1295 compatibility.
1297 * The error message printed by `assert' for a failed assertion now includes
1298 the name of the program (if using GNU ld) and the name of the calling
1299 function (with versions of GCC that support this).
1301 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1303 * The library now includes the <sys/mman.h> header file and memory
1304 management functions `mmap', `munmap', `mprotect', `msync', and
1305 `madvise', on systems that support those facilities.
1307 * The interface for `mcheck' has changed slightly: the function called to
1308 abort the program when an allocation inconsistency is detected now takes
1309 an argument that indicates the type of failure. The new function
1310 `mprobe' lets you request a consistency check for a particular block at
1311 any time (checks are normally done only when you call `free' or `realloc'
1312 on a block).
1314 * It is now possible to easily cross-compile the C library, building on one
1315 system a library to run on another machine and/or operating system. All
1316 you need to do is set the variable `HOST_CC' in `configparms' to the
1317 native compiler for programs to run on the machine you are building on (a
1318 few generator programs are used on Unix systems); set `CC' to the
1319 cross-compiler.
1321 * The new function `fexecve' (only implemented on the GNU system) executes
1322 a program file given a file descriptor already open on the file.
1323 \f
1324 Version 1.07
1326 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1327 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1329 * You can set the variable `libprefix' in `configparms' to specify a prefix
1330 to be prepended to installed library files; this makes it easy to install
1331 the GNU C library to be linked as `-lgnuc' or whatever.
1333 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1334 copies a limited number of characters from a string, and returns the
1335 address of the last character written.
1337 * You no longer need to check for whether the installed `stddef.h' is
1338 compatible with the GNU C library. configure now checks for you.
1340 * You can now define a per-stream `fileno' function to convert the
1341 stream's cookie into an integral file descriptor.
1343 * ``malloc (0)'' no longer returns a null pointer. Instead, it
1344 allocates zero bytes of storage, and returns a unique pointer which
1345 you can pass to `realloc' or `free'. The behavior is undefined if
1346 you dereference this pointer.
1348 * The C library now runs on Sony NEWS m68k machines running either
1349 NewsOS 3 or NewsOS 4.
1351 * The new `syscall' function is a system-dependent primitive function
1352 for invoking system calls. It has the canonical behavior on Unix
1353 systems, including unreliable return values for some calls (such as
1354 `pipe', `fork' and `getppid').
1356 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
1357 to `EAGAIN', which is the preferred name. On systems whose kernels
1358 use two distinct codes, the C library now translates EWOULDBLOCK to
1359 EAGAIN in every system call function.
1360 \f
1361 Version 1.06
1363 * The GNU C Library Reference Manual is now distributed with the library.
1364 `make dvi' will produce a DVI file of the printed manual.
1365 `make info' will produce Info files that you can read on line using C-h i
1366 in Emacs or the `info' program.
1367 Please send comments on the manual to bug-glibc-manual@gnu.org.
1369 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
1371 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
1373 * Jason Merrill has contributed a port to the Sequent Symmetry running
1374 Dynix version 3 (i386-sequent-dynix).
1376 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
1377 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
1379 * New function `memory_warnings' lets you arrange to get warnings when
1380 malloc is running out of memory to allocate, like Emacs gives you.
1382 * The C library now contains the relocating allocator used in Emacs 19 for
1383 its editing buffers. This allocator (ralloc) minimizes allocation
1384 overhead and fragmentation by moving allocated regions around whenever it
1385 needs to. You always refer to a ralloc'd region with a "handle" (a
1386 pointer to a pointer--an object of type `void **').
1388 * There is a new `printf' format: `%m' gives you the string corresponding
1389 to the error code in `errno'.
1391 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
1392 or `%[' conversion, but instead of filling in a fixed-sized buffer you
1393 pass, the `a' modifier says to fill in a `char **' you pass with a
1394 malloc'd string.
1396 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
1397 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
1398 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
1400 * `mkstemp' is a traditional Unix function to atomically create and open a
1401 uniquely-named temporary file.
1402 \f
1403 Version 1.05
1405 * The standard location for the file that says what the local timezone is
1406 has changed again. It is now `/usr/local/etc/localtime' (or more
1407 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
1409 * The distribution no longer contains any files with names longer than 14
1410 characters.
1412 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
1413 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
1415 * New functions `ttyslot' and `syslog' from 4.4 BSD.
1416 \f
1417 Version 1.04
1419 * The configuration process has changed quite a bit. The `configure'
1420 script is now used just like the configuration scripts for other GNU
1421 packages. The `sysdeps' directory hierarchy is much rearranged.
1422 The file `INSTALL' explains the new scheme in detail.
1424 * The header files no longer need to be processed into ANSI C and
1425 traditional C versions. There is just one set of files to install, and
1426 it will work with ANSI or old C compilers (including `gcc -traditional').
1428 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
1429 MIPS DECStation running Ultrix 4.
1431 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
1432 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
1433 made itself into a shared library.
1435 * Yet further improved support for the i386, running 4.3 BSD-like systems
1436 (such as Mach 3 with the Unix single-server), or System V.
1438 * New function `strncasecmp' to do case-insensitive string comparison
1439 with limited length.
1441 * New function `strsep' is a reentrant alternative to `strtok'.
1443 * New functions `scandir' and `alphasort' for searching directories.
1445 * New function `setenv' is a better interface to `putenv'.
1447 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
1448 function for traversing a directory tree.
1450 * The GNU obstack package is now also part of the C library.
1451 The new function `open_obstack_stream' creates a stdio stream that
1452 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
1453 formatted output directly to an obstack.
1455 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
1456 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
1458 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
1460 * The new functions `strfry' and `memfrob' do mysterious and wonderful
1461 things to your strings.
1463 * There are some new test programs: test-fseek, testmb, and testrand.
1465 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
1466 These ports are not finished, but are a good starting place for really
1467 supporting those systems.
1469 * `/etc/localtime' is now the standard location for the file that says what
1470 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
1471 This follows the general principle that `/etc' is the place for all local
1472 configuration files.
1474 * The C library header files now use `extern "C"' when used by the C++
1475 compiler, so the C library should now work with C++ code.
1477 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
1478 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
1479 in <strings.h>.)
1481 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
1482 function which uses the `merge sort' algorithm, and is said to be
1483 significantly faster than the old GNU `qsort' function. Merge sort is
1484 now the standard `qsort' function. The new algorithm can require a lot
1485 of temporary storage; so, the old sorting function is called when the
1486 required storage is not available.
1488 * The C library now includes Michael Glad's Ultra Fast Crypt, which
1489 provides the Unix `crypt' function, plus some other entry points.
1491 * The code and header files taken from 4.4 BSD have been updated with the
1492 latest files released from Berkeley.
1493 \f
1494 ----------------------------------------------------------------------
1495 Copyright information:
1497 Copyright (C) 1992-1999,2000,2001,2002 Free Software Foundation, Inc.
1499 Permission is granted to anyone to make or distribute verbatim copies
1500 of this document as received, in any medium, provided that the
1501 copyright notice and this permission notice are preserved,
1502 thus giving the recipient permission to redistribute in turn.
1504 Permission is granted to distribute modified versions
1505 of this document, or of portions of it,
1506 under the above conditions, provided also that they
1507 carry prominent notices stating who last changed them.
1508 \f
1509 Local variables:
1510 version-control: never
1511 End: