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1 GNU C Library NEWS -- history of user-visible changes. 2003-1-12
2 Copyright (C) 1992-2002, 2003 Free Software Foundation, Inc.
3 See the end for copying conditions.
5 Please send GNU C library bug reports using the `glibcbug' script to
6 <bugs@gnu.org>. Please send questions and suggestions to <bug-glibc@gnu.org>.
7 \f
8 Version 2.3.2
10 * Thread-safe interfaces for many functions that access locale data
11 were added in version 2.3, but these features were omitted from NEWS.
12 Many functions have variants with an `_l' suffix that take a `locale_t'
13 object as a parameter rather than consulting the current locale.
14 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
15 create and maintain `locale_t' objects. Additionally, the new function
16 `uselocale' sets "the current locale" (as used by functions not so
17 parameterized) set for an individual thread. These features were added
18 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
20 * The functions getresuid, getresgid, setresuid, and setresgid, which
21 have long been available on Linux, are now declared in <unistd.h>
22 and are now also available on the Hurd.
24 * ELF thread-local storage support (TLS) now works on x86-64.
26 * The new dynamic string token $LIB is expanded in shared library names.
27 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
29 * Aldy Hernandez contributed complete software floating point support for
30 PowerPC machines with no FPU.
32 * fexecve is implemented on Linux.
34 * The `btowc' function should work at least twice as fast due to
35 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
37 * With approriate thread add-ons cancelable functions are now implemented
38 in libc.so as well. No need to call the function in libpthread. This
39 change allowed to finally disable the incorrect and expensive handling
40 of weak definition in ld.so.
42 * Yet more PLT entries in libc.so have been removed. We finally arrived
43 at the bare minimum. Startup times improved appropriately.
45 * Support for the new Linux/x86 system call interface was added. The
46 AT_SYSINFO auxiliary vector entry is recognized and handled.
47 \f
48 Version 2.3
50 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
51 charsets.
53 * iconv (the program and the interface) now accepts empty names (excluding
54 options like //TRANSLIT) to mean "use charset of current locale".
56 * localedef can now transliterate characters in strings which are not in
57 the provided charmap. The information from the input locale is used.
59 * Prelinking support was added for ELF targets. This requires additional
60 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
62 * Read-only stdio streams now use mmap to speed up operation by eliminating
63 copying and buffer underflows. To use add 'm' to the mode string of
64 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
66 * The malloc functions were completely rewritten by Wolfram Gloger based
67 on Doug Lea's malloc-2.7.0.c.
69 * Isamu Hasegawa contributed a completely new and POSIX-conformant
70 implementation of regex.
72 * Bruno Haible upgraded the iconv and locale implementation to support
73 Unicode 3.2.
75 * Contents of the LC_* and LANG environment variables in the CEN style are
76 not recognized anymore. It never was used. Change by Ulrich Drepper.
78 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
79 thread-local storage (TLS) ABI on some platforms.
80 Changes by Ulrich Drepper. SH support by Kaz Kojima.
82 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
83 EUC-JISX0213, and TSCII.
85 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
86 BSD-compatible interface for getting all network interface addresses.
87 Implementation for IPv4 by Roland McGrath.
89 * Loading of locale data is faster due to the introduction of a locale
90 archive. Implemented by Roland McGrath and Ulrich Drepper.
92 * Startup times are significantly reduced by not using exported functions
93 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
94 and Ulrich Drepper.
96 * Steven Munroe contributed a port to PowerPC64/Linux.
97 \f
98 Version 2.2.6
100 * The Hurd now uses the GNU libio implementation of stdio rather than the
101 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
103 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
104 with the same behavior as the Linux system call of the same name.
105 \f
106 Version 2.2.5
108 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
109 128-bit long double format.
111 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
112 IBM1161, and IBM1162 charsets.
114 * Andreas Jaeger contributed a port to x86-64/Linux.
116 * Peter Bruin contributed a port to PowerPC/Hurd.
118 * libc functions using I/O streams now can handle wide-oriented streams
119 as well.
121 * optimizations in the dynamic linker. Binaries created by recent binutils
122 versions start up quicker due to reduced time spent on relocations.
124 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
125 \f
126 Version 2.2.4
128 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
129 asinh, atanh, j0 for the 128-bit long double format.
131 * Bruno Haible updated all the code handling Unicode in some form to
132 support Unicode 3.1.
134 * Speed of regex for single-byte locales is back to previous levels.
135 Patch by Isamu Hasegawa.
137 * Alpha, SPARC, and IA-64 now also using floating stacks.
139 * Startup time of internationalized applications greatly improved through
140 iconv cache. Use iconvconfig to generate the cache file.
141 Contributed by Ulrich Drepper.
143 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
144 severe performance problems. Patch by David Mosberger.
146 * The Hurd port got a lot more functionality like AIO, various stdio
147 extensions, etc. Mainly done by Roland McGrath.
149 * mtrace can now lookup symbols in shared libraries.
150 \f
151 Version 2.2.3
153 * Intel's IA-64 math library is largely integrated. It provides fast and
154 accurate implementatations for most basic and standard math functions
155 in float, double, and long double format.
157 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
158 and asin for the 96-bit long double format and asin, log, tan for the
159 128-bit long double format.
161 * The beginning of a last-bit accurate math library by IBM Haifa were added.
162 The basic double functions exist today. Contributed by Abraham Ziv
163 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
164 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
166 * An asynchronous name lookup library was added. The interface is designed
167 after POSIX AIO. The proposal was circulated beforehand to get comments.
168 No negative ones came in. Implemented by Ulrich Drepper.
170 * Port to S390/64bit contributed by Martin Schwidefsky
171 <schwidefsky@de.ibm.com>.
173 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
174 of functions for Linux/IA-64.
176 * The RPC code is now thread safe. Threads can now use the same service
177 of different services at the same time. Patch by Eric Norum
178 <eric.norum@usask.ca> with some help by Ulrich Drepper.
180 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
181 family of functions for Linux/S390.
183 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
184 of functions for Linux/x86.
186 * Port to Linux/CRIS contributed by Axis Communications.
187 \f
188 Version 2.2.2
190 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
191 we can now check for namespace violations and missing declarations. The
192 result is that almost all headers are now Unix-compliant (as defined in
193 the upcoming XPG6). The negative side is that some programs might need
194 corrections, too, if they depend on the incorrect form of the headers in
195 previous versions which defined too many symbols and included too many
196 other headers.
198 * regex now handles multibyte character sets correctly.
199 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
201 * iconv (the program) does now conform to the upcoming XPG6 and handles
202 charmaps. Instead of the charset names the path of charmaps can be
203 provided and the conversion happens based on this data.
204 Contributed by Ulrich Drepper.
206 * The locale program now provides detailed information about the installed
207 locales. While
209 locale -a
211 only lists the names of the supported locales
213 locale -a --verbose
215 provides details such as country, language, and codeset name.
216 Contributed by Ulrich Drepper.
217 \f
218 Version 2.2.1
220 * The gencat program now parses the input file according to the charset
221 selected by the LC_CTYPE category. This is important for stateful
222 character sets. To make generating catalogs easier there is a way
223 to overwrite the charset selected by the locale: before the first
224 message or $ quote line the catalog can contain a line like
226 $ codeset=ISO-8859-2
228 to select the charset (ISO-8859-2 in this case).
230 Implemented by Shinya Hanataka and Ulrich Drepper.
232 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
233 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
234 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
236 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
237 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
239 * The LANGUAGE environment variable is now ignored unless the locale is
240 changed from the default "C" locale.
242 * The usual bug fixes.
243 \f
244 Version 2.2
246 * Greg McGary added runtime support for bounds checking using gcc's
247 new -fbounded-pointers option. ix86 target is complete. PowerPC
248 is in progress.
250 * Thorsten Kukuk added secure mode support to nscd.
252 * The Berkeley db libraries have been removed.
254 Related, the nss_db module is now in a separate package since it
255 obviously requires a database library being available.
257 * Wide character I/O streams implemented by Ulrich Drepper.
259 * Functions from the extended socket API added by Ulrich Drepper.
261 * Functions feenableexcept and fedisableexcept to control the
262 behaviour of individual exceptions have been added by Andreas Jaeger.
264 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
266 * The resolver code has been updated from bind 8.2.3-T5B which supports
267 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
268 and Mark Kettenis.
270 This change could in some situations effect backward compatibility. Since
271 now `_res' is a thread-local instead of a global variable, modifying it
272 in one thread does not have any effect in other threads.
274 The resolver library was also extended to allow IPv6 as the transport
275 protocol for the requests. This work was done by Stig Venaas.
277 * Compatibility code for K&R C compilers has been removed from the
278 header files. A ISO C compiler is needed to use the library
279 (conforming to either C89 or C99 standard).
281 * Complete rewrite of the localedef program to support multibyte character
282 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
283 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
284 Implemented by Ulrich Drepper.
286 Bruno Haible significantly improved the generation and use of the data
287 structures for the wide character tables.
289 * Plural handling in gettext implemented by Ulrich Drepper.
291 * The utmp daemon has been removed.
293 * The port to MIPS-Linux has been finished by Andreas Jaeger.
295 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
296 and Yutaka Niibe.
298 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
300 * POSIX barriers implemented by Kaz Kylheku.
302 * POSIX spawn function family implemented by Ulrich Drepper.
304 * POSIX spinlocks are now available.
306 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
308 * the configure option --enable-kernel=X.Y.Z allows to strip out
309 compatibility for kernel versions before X.Y.Z. This is currently only
310 implemented for Linux.
312 * the sockaddr_in6 structure changed. The IPv6 working group added a new
313 field sin6_scope_id. This means that all programs using IPv6 should be
314 recompiled. Don't expect binary compatibility with previous glibc
315 versions.
317 * various conversion modules for IBM character sets contributed by
318 Masahide Washizawa.
320 * IA-64 port by Jes Sorensen and HJ Lu.
322 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
323 Compiling the GNU C Library for Linux/ia64
324 ******************************************
326 Please refer to the file INSTALL in the same directory as you found
327 this file for general information about configuring and compiling
328 glibc.
330 For general inquiries about glibc under Linux/ia64 please use the
331 following mailing list linux-ia64@linuxia64.org or one of the relevant
332 glibc mailing lists.
334 Recommended Tools for Compilation
335 =================================
337 In order for glibc-2.2 to build correctly on the ia64 you need at
338 least the following versions of the GNU tools (the :
340 * The Cygnus toolchain snapshot for the ia64 as of August 4
341 including the provided set of patches. It is however recommend
342 you use the October 24 toolchain snapshot or a more recent version.
344 OR alternatively you can try the following (the Cygnus toolchain is
345 the recommended solution):
347 * GCC and binutils, GAS and GNU LD out of CVS from
348 sources.redhat.com as of August 28, 2000 or later. The CVS tree
349 may require special patches to work properly on the ia64.
351 Configuring and compiling GNU Libc for Linux/ia64
352 =================================================
354 The library requires Linux kernel version 2.4.0-test4-000728 or
355 later to funtion properly. Besides that it support for debug libraries
356 is currently untested. Hence the following options
357 are required for configuring the library:
359 --disable-debug --enable-kernel=2.4.0
361 It is also important that you make sure the library picks up the
362 appropriate kernel header files, if you do not have recent enough
363 kernel headers in /usr/src/linux/include, you should use the
364 --with-headers=<path> option to specify the location.
366 As an example I personally use the following options to configure
367 the library:
369 --disable-debug
370 --disable-cvs
371 --enable-kernel=2.4.0
372 --host=ia64-linux
373 --enable-add-ons=yes
374 --prefix=/usr
375 --with-headers=/home/jes/linux/include
378 Good luck
380 Jes Sorensen <jes@linuxcare.com>,
381 November 14th, 2000
382 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
383 \f
384 Version 2.1.3
386 * bug fixes
388 \f
389 Version 2.1.2
391 * bug fixes
393 \f
394 Version 2.1.1
396 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
398 * New xdr functions are added; some rpc functions are now 64bit clean.
400 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
402 * Fixed known incompatibilities with glibc 2.0.
404 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
406 * Optimized a number of functions (especially the ELF dynamic loader).
408 * Update timezone data files.
410 * lots of charmaps corrections
412 * some new locale definitions and charmaps
414 \f
415 Version 2.1
417 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
418 conform to POSIX member type requirements. Symbol versions have been
419 adjusted as needed within the library, and for direct use by applications,
420 but there is potential for problems if third-party libraries use
421 struct timeval as part of their interface. This does not present
422 a problem for X and other "essential" system libraries.
424 * An additional locale model to support C++ Standard Library locale
425 model and probably more was implemented by Ulrich Drepper.
427 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
428 symbol level.
430 * Miles Bader provided the `argp' function family to support hierachical
431 command line argument parsing, layered on top of getopt.
433 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
435 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
436 numbers.
438 * scanf recognizes the %a and %A format for scanning floating point numbers.
440 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
441 information and interfaces for the available integer types.
443 * about 130 new math functions were added to implement the ISO C9x math
444 library.
446 * the new header <complex.h> contains definitions of the complex math
447 functions from ISO C 9X.
449 * the new header <tgmath.h> defines generic macros to use complex or
450 real valued functions.
452 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
454 * Andreas Jaeger provided a test suite for the math library.
456 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
458 * Ulrich Drepper added character set conversion functions (iconv).
460 * Optimized string functions have been added.
462 * The localedata addon is now part of glibc.
464 * An implementation of profiling shared libraries was added by Ulrich Drepper.
466 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
467 daemon for NSS (nscd).
469 Missing a better place here are some numbers on improvements. Under
470 Linux 2.1.125 un-tar-ing the kernel sources takes
472 user system wall
474 using local files 12.19s 6.88s 22.91s
476 using NIS 13.92s 8.91s 26.34s
478 using NIS & nscd 10.37s 7.34s 25.30s
480 using NIS+ 27.57s 30.37s 640.46s
482 using NIS+ & nscd 10.25s 7.83s 26.51s
484 using NIS & old nscd [1] 13.83s 8.32s 29.60s
486 Keep in mind that non-namelookup related operations dominate above times.
487 It was just a common complain that using NIS+ unpacking the kernel is
488 horribly slow.
490 [1] The old nscd implementation is not available anymore since it was
491 distributed with glibc up to version 2.0.98 and thus is now replaced.
493 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
495 * Mark Kettenis provided a Hesiod NSS module.
497 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
498 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
500 * rcmd can now handle netgroups (Dick Streefland).
502 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
503 Bambrough.
505 * Support for the IPv6 protocol has been added to the socket API, as per the
506 latest draft standards.
508 * Support for Linux 2.2 has been added.
510 * Interface changes relative to the latest 2.0.x release:
511 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
512 addseverity NEW: Unix98
513 alphasort64 NEW: LFS
514 argp_err_exit_status NEW: argp, GNU ext
515 argp_error NEW: argp, GNU ext
516 argp_failure NEW: argp, GNU ext
517 argp_help NEW: argp, GNU ext
518 argp_parse NEW: argp, GNU ext
519 argp_program_bug_address NEW: argp, GNU ext
520 argp_program_version NEW: argp, GNU ext
521 argp_program_version_hook NEW: argp, GNU ext
522 argp_state_help NEW: argp, GNU ext
523 argp_usage NEW: argp, GNU ext
524 authdes_create NEW: Secure RPC
525 authdes_getucred NEW: Secure RPC
526 authdes_pk_create NEW: Secure RPC
527 backtrace NEW: GNU ext.
528 backtrace_symbols NEW: GNU ext.
529 backtrace_symbols_fd NEW: GNU ext.
530 cacos NEW: ISO C 9x
531 cacosf NEW: ISO C 9x
532 cacosh NEW: ISO C 9x
533 cacoshf NEW: ISO C 9x
534 cacoshl NEW: ISO C 9x
535 cacosl NEW: ISO C 9x
536 capget NEW: kernel
537 capset NEW: kernel
538 carg NEW: ISO C 9x
539 cargf NEW: ISO C 9x
540 cargl NEW: ISO C 9x
541 casin NEW: ISO C 9x
542 casinf NEW: ISO C 9x
543 casinh NEW: ISO C 9x
544 casinhf NEW: ISO C 9x
545 casinhl NEW: ISO C 9x
546 casinl NEW: ISO C 9x
547 catan NEW: ISO C 9x
548 catanf NEW: ISO C 9x
549 catanh NEW: ISO C 9x
550 catanhf NEW: ISO C 9x
551 catanhl NEW: ISO C 9x
552 catanl NEW: ISO C 9x
553 cbc_crypt NEW: Secure RPC
554 ccos NEW: ISO C 9x
555 ccosf NEW: ISO C 9x
556 ccosh NEW: ISO C 9x
557 ccoshf NEW: ISO C 9x
558 ccoshl NEW: ISO C 9x
559 ccosl NEW: ISO C 9x
560 cexp NEW: ISO C 9x
561 cexpf NEW: ISO C 9x
562 cexpl NEW: ISO C 9x
563 cimag NEW: ISO C 9x
564 cimagf NEW: ISO C 9x
565 cimagl NEW: ISO C 9x
566 clearerr_locked REMOVED
567 clntunix_create NEW: sunrpc ext
568 clog NEW: ISO C 9x
569 clog10 NEW: ISO C 9x
570 clog10f NEW: ISO C 9x
571 clog10l NEW: ISO C 9x
572 clogf NEW: ISO C 9x
573 clogl NEW: ISO C 9x
574 conj NEW: ISO C 9x
575 conjf NEW: ISO C 9x
576 conjl NEW: ISO C 9x
577 cpow NEW: ISO C 9x
578 cpowf NEW: ISO C 9x
579 cpowl NEW: ISO C 9x
580 cproj NEW: ISO C 9x
581 cprojf NEW: ISO C 9x
582 cprojl NEW: ISO C 9x
583 creal NEW: ISO C 9x
584 crealf NEW: ISO C 9x
585 creall NEW: ISO C 9x
586 creat64 NEW: LFS
587 csin NEW: ISO C 9x
588 csinf NEW: ISO C 9x
589 csinh NEW: ISO C 9x
590 csinhf NEW: ISO C 9x
591 csinhl NEW: ISO C 9x
592 csinl NEW: ISO C 9x
593 csqrt NEW: ISO C 9x
594 csqrtf NEW: ISO C 9x
595 csqrtl NEW: ISO C 9x
596 ctan NEW: ISO C 9x
597 ctanf NEW: ISO C 9x
598 ctanh NEW: ISO C 9x
599 ctanhf NEW: ISO C 9x
600 ctanhl NEW: ISO C 9x
601 ctanl NEW: ISO C 9x
602 des_setparity NEW: Secure RPC
603 ecb_crypt NEW: Secure RPC
604 endutxent NEW: Unix98
605 exp10 NEW: ISO C 9x
606 exp10f NEW: ISO C 9x
607 exp10l NEW: ISO C 9x
608 exp2 NEW: ISO C 9x
609 exp2f NEW: ISO C 9x
610 exp2l NEW: ISO C 9x
611 fattach NEW: STREAMS
612 fdetach NEW: STREAMS
613 fdim NEW: ISO C 9x
614 fdimf NEW: ISO C 9x
615 fdiml NEW: ISO C 9x
616 feclearexcept NEW: ISO C 9x
617 fegetenv NEW: ISO C 9x
618 fegetexceptflag NEW: ISO C 9x
619 fegetround NEW: ISO C 9x
620 feholdexcept NEW: ISO C 9x
621 feof_locked REMOVED
622 feraiseexcept NEW: ISO C 9x
623 ferror_locked REMOVED
624 fesetenv NEW: ISO C 9x
625 fesetexceptflag NEW: ISO C 9x
626 fesetround NEW: ISO C 9x
627 fetestexcept NEW: ISO C 9x
628 feupdateenv NEW: ISO C 9x
629 fflush_locked REMOVED
630 ffsl NEW: GNU ext.
631 ffsll NEW: GNU ext.
632 fgetpos64 NEW: LFS
633 fgets_unlocked NEW: GNU ext.
634 fileno_locked REMOVED
635 fma NEW: ISO C 9x
636 fmaf NEW: ISO C 9x
637 fmal NEW: ISO C 9x
638 fmax NEW: ISO C 9x
639 fmaxf NEW: ISO C 9x
640 fmaxl NEW: ISO C 9x
641 fmin NEW: ISO C 9x
642 fminf NEW: ISO C 9x
643 fminl NEW: ISO C 9x
644 fmtmsg NEW: Unix98
645 fopen64 NEW: LFS
646 fputc_locked REMOVED
647 fputs_unlocked NEW: GNU ext.
648 fread_unlocked NEW: GNU ext.
649 freopen64 NEW: LFS
650 fseeko NEW: Unix98
651 fsetpos64 NEW: LFS
652 fstatfs64 NEW: LFS
653 fstatvfs NEW: Unix98
654 fstatvfs64 NEW: LFS
655 ftello NEW: Unix98
656 ftello64 NEW: LFS
657 ftruncate64 NEW: LFS
658 ftw64 NEW: LFS
659 fwrite_unlocked NEW: GNU ext.
660 gai_strerror NEW: IPv6
661 gamma_r REMOVED
662 gammaf_r REMOVED
663 gammal_r REMOVED
664 getchar_locked REMOVED
665 getdate NEW: Unix98
666 getdate_err NEW: Unix98
667 getdate_r NEW: GNU ext.
668 getmsg NEW: STREAMS
669 getnameinfo NEW: IPv6
670 getnetname NEW: Secure RPC
671 getpmsg NEW: STREAMS
672 getpt NEW: Unix98 PTY
673 getrlimit64 NEW: LFS
674 getutxent NEW: Unix98
675 getutxid NEW: Unix98
676 getutxline NEW: Unix98
677 glob64 NEW: GNU ext.
678 globfree64 NEW: GNU ext.
679 gnu_get_libc_release NEW: GNU ext.
680 gnu_get_libc_version NEW: GNU ext.
681 grantpt NEW: Unix98 PTY
682 host2netname NEW: Secure RPC
683 iconv NEW: iconv
684 iconv_close NEW: iconv
685 iconv_open NEW: iconv
686 if_freenameindex NEW: IPv6
687 if_indextoname NEW: IPv6
688 if_nameindex NEW: IPv6
689 if_nametoindex NEW: IPv6
690 in6addr_any NEW: IPv6
691 in6addr_loopback NEW: IPv6
692 inet6_isipv4mapped NEW: IPv6
693 isastream NEW: STREAMS
694 iswblank NEW: GNU ext.
695 key_decryptsession NEW: Secure RPC
696 key_decryptsession_pk NEW: Secure RPC
697 key_encryptsession NEW: Secure RPC
698 key_encryptsession_pk NEW: Secure RPC
699 key_gendes NEW: Secure RPC
700 key_get_conv NEW: Secure RPC
701 key_secretkey_is_set NEW: Secure RPC
702 key_setnet NEW: Secure RPC
703 key_setsecret NEW: Secure RPC
704 llrint NEW: ISO C 9x
705 llrintf NEW: ISO C 9x
706 llrintl NEW: ISO C 9x
707 llround NEW: ISO C 9x
708 llroundf NEW: ISO C 9x
709 llroundl NEW: ISO C 9x
710 log2 NEW: ISO C 9x
711 log2f NEW: ISO C 9x
712 log2l NEW: ISO C 9x
713 lrint NEW: ISO C 9x
714 lrintf NEW: ISO C 9x
715 lrintl NEW: ISO C 9x
716 lround NEW: ISO C 9x
717 lroundf NEW: ISO C 9x
718 lroundl NEW: ISO C 9x
719 lseek64 NEW: LFS
720 makecontext NEW: Unix98
721 mempcpy NEW: GNU ext.
722 mmap64 NEW: LFS
723 moncontrol REMOVED
724 modify_ldt NEW: kernel
725 nan NEW: ISO C 9x
726 nanf NEW: ISO C 9x
727 nanl NEW: ISO C 9x
728 nearbyint NEW: ISO C 9x
729 nearbyintf NEW: ISO C 9x
730 nearbyintl NEW: ISO C 9x
731 netname2host NEW: Secure RPC
732 netname2user NEW: Secure RPC
733 nexttoward NEW: ISO C 9x
734 nexttowardf NEW: ISO C 9x
735 nexttowardl NEW: ISO C 9x
736 nftw NEW: Unix98
737 nftw64 NEW: LFS
738 open64 NEW: LFS
739 passwd2des NEW: Secure RPC
740 pow10 NEW: GNU ext.
741 pow10f NEW: GNU ext.
742 pow10l NEW: GNU ext.
743 pread NEW: Unix98
744 pread64 NEW: LFS
745 printf_size NEW: GNU ext.
746 printf_size_info NEW: GNU ext.
747 profil_counter REMOVED
748 pthread_mutexattr_getkind_np REPLACED
749 pthread_mutexattr_setkind_np REPLACED
750 ptsname NEW: Unix98 PTY
751 ptsname_r NEW: Unix98 PTY
752 putc_locked REMOVED
753 putchar_locked REMOVED
754 putgrent NEW: GNU ext.
755 putmsg NEW: STREAMS
756 putpmsg NEW: STREAMS
757 pututxline NEW: Unix98
758 pwrite NEW: Unix98
759 pwrite64 NEW: LFS
760 readdir64 NEW: LFS
761 readdir64_r NEW: LFS
762 remquo NEW: ISO C 9x
763 remquof NEW: ISO C 9x
764 remquol NEW: ISO C 9x
765 round NEW: ISO C 9x
766 roundf NEW: ISO C 9x
767 roundl NEW: ISO C 9x
768 rtime NEW: GNU ext.
769 scalbln NEW: ISO C 9x
770 scalblnf NEW: ISO C 9x
771 scalblnl NEW: ISO C 9x
772 scandir64 NEW: LFS
773 sendfile NEW: kernel
774 setcontext NEW: Unix98
775 setrlimit64 NEW: LFS
776 setutxent NEW: Unix98
777 sighold NEW: Unix98
778 sigignore NEW: Unix98
779 sigqueue NEW: POSIX.1b
780 sigrelse NEW: Unix98
781 sigset NEW: POSIX.1b
782 sigtimedwait NEW: POSIX.1b
783 sigwaitinfo NEW: POSIX.1b
784 sincos NEW: GNU ext.
785 sincosf NEW: GNU ext.
786 sincosl NEW: GNU ext.
787 statfs64 NEW: LFS
788 statvfs NEW: Unix98
789 statvfs64 NEW: LFS
790 strcasestr NEW: GNU ext.
791 strtoimax NEW: ISO C 9x
792 strtoumax NEW: ISO C 9x
793 strverscmp NEW: GNU ext.
794 svcauthdes_stats NEW: Secure RPC
795 svcunix_create NEW: sunrpc etx
796 svcunixfd_create NEW: sunrpc ext
797 swapcontext NEW: Unix98
798 tcgetsid NEW: Unix98 PTY
799 tdestroy NEW: GNU ext.
800 tgamma NEW: ISO C 9x
801 tgammaf NEW: ISO C 9x
802 tgammal NEW: ISO C 9x
803 tmpfile64 NEW: LFS
804 trunc NEW: ISO C 9x
805 truncate64 NEW: LFS
806 truncf NEW: ISO C 9x
807 truncl NEW: ISO C 9x
808 umount2 NEW: kernel
809 unlockpt NEW: Unix98 PTY
810 updwtmpx NEW: Unix98
811 user2netname NEW: Secure RPC
812 utmpxname NEW: Unix98
813 versionsort NEW: GNU ext.
814 versionsort64 NEW: GNU ext.
815 waitid NEW: Unix98
816 wcscasecmp NEW: GNU ext.
817 wcsncasecmp NEW: GNU ext.
818 wcsnlen NEW: GNU ext.
819 wcstoimax NEW: ISO C 9x
820 wcstoll NEW: ISO C 9x
821 wcstoull NEW: ISO C 9x
822 wcstoumax NEW: ISO C 9x
823 wcswcs NEW: Unix98
824 wordexp NEW: POSIX.2
825 wordfree NEW: POSIX.2
826 write_profiling REMOVED
827 xdecrypt NEW: Secure RPC
828 xdr_authdes_cred NEW: Secure RPC
829 xdr_authdes_verf NEW: Secure RPC
830 xdr_cryptkeyarg NEW: Secure RPC
831 xdr_cryptkeyarg2 NEW: Secure RPC
832 xdr_cryptkeyres NEW: Secure RPC
833 xdr_getcredres NEW: Secure RPC
834 xdr_key_netstarg NEW: Secure RPC
835 xdr_key_netstres NEW: Secure RPC
836 xdr_keybuf NEW: Secure RPC
837 xdr_keystatus NEW: Secure RPC
838 xdr_netnamestr NEW: Secure RPC
839 xdr_sizeof NEW: Secure RPC
840 xdr_unixcred NEW: sunrpc ext
841 xencrypt NEW: Secure RPC
842 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
843 \f
844 Version 2.0.6
846 * more bug fixes
848 \f
849 Version 2.0.5
851 * more bug fixes
853 * inet_ntoa is thread-safe
855 * updwtmp is moved from libutil to libc
857 * rewrite of cbrt function
859 * update of timezone data
860 \f
861 Version 2.0.4
863 * more bug fixes
864 \f
865 Version 2.0.3
867 * more bug fixes
868 \f
869 Version 2.0.2
871 * more bug fixes
873 * add atoll function
875 * fix complex problems in Berkeley DB code
877 * fix math functions
878 \f
879 Version 2.0.1
881 * fixed lots of header problems (especially Linux/GNU specific)
883 * dynamic loader preserves all registers
885 * Roland McGrath provided support for handling of auxiliary objects in
886 the ELF dynamic loader.
888 * support for parallel builds is improved
889 \f
890 Version 2.0
892 * GNU extensions are no longer declared by default. To enable them you
893 must define the macro `_GNU_SOURCE' in your program or compile with
894 `-D_GNU_SOURCE'.
896 * The library has changed from using GNU ld symbol aliases to using weak
897 symbols where available. The ELF object file format supports weak
898 symbols; GNU ld also supports weak symbols in the a.out format. (There
899 is also now support for other GNU ld extensions in ELF. Use the
900 `--with-elf' option to configure to indicate you have ELF, and
901 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
902 of many files which contained only symbol aliases, reducing the size of
903 the source and the compiled library; many other files were renamed to
904 less cryptic names previously occupied by the symbol alias files.
905 There is a new header file <elf.h> for programs which operate on
906 files in the ELF format.
908 * Converted to Autoconf version 2, so `configure' has more options.
909 Run `configure --help' to see the details.
911 * The library can now be configured to build profiling, highly-optimized
912 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
913 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
914 `configure' enable building these extra libraries. The shared library is
915 built by default when using both ELF and GNU ld. When shared libraries
916 are enabled, the new library `-ldl' is available for arbitrary run-time
917 loading of shared objects; its interface is defined in <dlfcn.h>. The
918 new header file <link.h> gives access to the internals of the run-time
919 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
920 application of same name on other systems and it provides information
921 about dynamically linked binaries.
923 * The C library now provides the run-time support code for profiling
924 executables compiled with `-pg'. Programs can control the profiling code
925 through the interface in <sys/gmon.h>. The `gmon.out' files written by
926 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
927 the support for this file format was contributed by David Mosberger-Tang.
929 * The math code has been replaced with a math library based on fdlibm from
930 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
931 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
932 functions. The math functions now reside in a separate library, so
933 programs using them will need to use `-lm' their linking commands.
935 * John C. Bowman contributed optimized ix87 assembler inline functions.
937 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
938 mechanism similar to that found in Solaris 2. This is now used for the
939 group, passwd, hosts, networks, services, protocols, rpc, ethers,
940 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
941 file controls what services are used for each individual database. This
942 works by loading shared libraries with names specified in `nsswitch.conf',
943 so service modules can be changed or added at any time without even
944 relinking any program. Currently there are the file, db, and NIS based
945 NSS services available.
947 * The new functions `strtoq' and `strtouq' parse integer values from
948 strings, like `strtol' and `strtoul', but they return `long long int' and
949 `unsigned long long int' values, respectively (64-bit quantities).
951 * The new functions `strtof' and `strtold' parse floating-point values from
952 strings, like `strtod', but they return `float' and `long double' values,
953 respectively (on some machines `double' and `long double' are the same).
955 * Ulrich Drepper has contributed new implementations of the floating-point
956 printing and reading code used in the `printf' family of functions and
957 `strtod', `strtof', and `strtold'. These new functions are perfectly
958 accurate, and much faster than the old ones.
960 * The implementation of the POSIX locale model was completely rewritten by
961 Ulrich Drepper. This includes the new programs `localedef' and `locale'
962 to compile the POSIX locale definition.
964 * The former dummy implementations of the strcoll and strxfrm function are
965 now replaced by fully functional code contributed by Ulrich Drepper. The
966 collation information comes from the POSIX locale definitions.
968 * The new header <langinfo.h> defines an interface for accessing
969 various locale-dependent data (using the locale chosen with `setlocale').
971 * Ulrich Drepper has contributed a new suite of functions for operation on
972 wide-character and multibyte-character strings, in <wchar.h>;
973 and classification and case conversion of wide characters, in <wctype.h>.
974 These new functions are conforming to the ISO C, Amendement 1 specification.
976 * There is now a second implementation of the standard I/O library available.
977 It comes from GNU libg++ as was written by Per Bothner, heavily modified
978 by Hongjiu Lu and made thread safe by Ulrich Drepper.
980 * You can now use positional parameter specifications in format strings
981 for the `printf' and `scanf' families of functions. For example,
982 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
983 ``Number 6, Mr Jones''. This is mainly useful when providing different
984 format strings for different languages, whose grammars may dictate
985 different orderings of the values being printed. To support this
986 feature, the interface for `register_printf_handler' has changed; see
987 the header file <printf.h> for details.
989 * The `printf' and `scanf' families of functions now understand a new
990 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
991 to group numbers as indicated by the locale; for `scanf' and friends, this
992 says to accept as valid only a number with all the proper grouping
993 separators in the right places. In the default "C" locale, numbers are
994 not grouped; but locales for specific countries will define the usual
995 conventions (i.e. separate thousands with `,' in the US locale).
997 * The pgrp functions have been regularized, slightly incompatibly but much
998 less confusingly. The core functions are now `getpgid' and `setpgid',
999 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1000 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1001 provided for compatibility. There is no longer an incompatible `getpgrp'
1002 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1004 * The new header file <fts.h> and suite of functions simplify programs that
1005 operate on directory trees. This code comes from 4.4 BSD.
1007 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1008 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1009 NSS scheme used in glibc.
1011 * There is a new malloc debugging hook `__memalign_hook'.
1013 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1014 `unsigned int' in <sys/types.h>. These are for compatibility only and
1015 their use is discouraged.
1017 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1018 done differently, so that it works even without GNU ld.
1020 * New function `euidaccess' checks allowed access to a file like `access',
1021 but using the effective IDs instead of the real IDs.
1023 * The time zone data files have been updated for the latest and greatest
1024 local time conventions of the countries of the world.
1026 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1027 see <dirent.h>.
1029 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1030 for formatting floating-point numbers. They are provided only for
1031 compatibility; new programs should use `sprintf' instead. There are
1032 also equivalent function for the `long double' floating-point type and
1033 all functions also exist in a reentrant form.
1035 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1036 functions for maintaining the login-record files (primarily of use to
1037 system programs such as `login'), and convenient functions for
1038 allocating and initializing a pseudo-terminal (pty) device.
1040 * Ulrich Drepper has contributed new support for System V style
1041 shared memory and IPC on systems that support it.
1043 * Ulrich Drepper has contributed several miscellaneous new functions found
1044 in System V: The `hsearch' family of functions provide an effective
1045 implementation of hash tables; `a64l' and `l64a' provide a very simple
1046 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1047 number generator.
1049 * Ulrich Drepper has contributed new reentrant counterparts for the
1050 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1052 * Ulrich Drepper has contributed new, highly-optimized versions of several
1053 string functions for the i486/Pentium family of processors.
1055 * Ulrich Drepper has updated the Linux-specific code, based largely
1056 on work done in Hongjiu Lu's version of GNU libc for Linux.
1057 The GNU library now supports Linux versions 2.0.10 and later,
1058 using the ELF object file format (i[3456]86-*-linux).
1060 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1062 * David Mosberger-Tang and Richard Henderson have ported the C library
1063 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1064 dynamic linking support for ELF/Alpha.
1066 * Richard Henderson contributed several Alpha optimized assembler function
1067 for arithmetic and string handling.
1069 * Ulrich Drepper has contributed a new set of message catalog functions to
1070 support multiple languages using the <libintl.h> interface, for use with
1071 his new package GNU gettext. Translation volunteers have contributed
1072 catalogs of the library's messages in Spanish, German, and Korean.
1074 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1075 program and the `catgets' function for reading the catalog files it
1076 creates. (The <libintl.h> interface is preferred; we include the
1077 <nl_types.h> interface using `catgets' only for source compatibility with
1078 programs already written to use it.)
1080 * New header file <values.h> gives SVID-compatible names for <limits.h>
1081 constants.
1083 * Various new macros, declarations, and small header files for compatibility
1084 with 4.4 BSD.
1086 * New function `group_member' is a convenient way to check if a process has
1087 a given effective group ID.
1089 * When using GCC 2.7 and later, the socket functions are now declared in a
1090 special way so that passing an argument of type `struct sockaddr_in *',
1091 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1092 `struct sockaddr *' type, does not generate a type-clash warning.
1094 * New function `error' declared in header file <error.h> is a convenient
1095 function for printing error messages and optionally exiting; this is the
1096 canonical function used in GNU programs. The new functions `err', `warn',
1097 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1098 doing the same thing.
1100 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1101 POSIX.2 `glob' function to do ~ and {...} expansion.
1103 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1104 `clearenv' which is used in POSIX.9 is also available.
1106 * New function `getsid' returns session ID number on systems that support it.
1108 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1109 files <db.h> and <mpool.h> provide a rich set of functions for several
1110 types of simple databases stored in memory and in files, and <ndbm.h> is
1111 an old `ndbm'-compatible interface using the `db' functions. Link with
1112 `-ldb' to get these functions.
1114 * New macro `strdupa' copies a string like `strdup', but uses local stack
1115 space from `alloca' instead of dynamic heap space from `malloc'.
1117 * New function `strnlen' is like `strlen' but searches only a given maximum
1118 number of characters for the null terminator. `stpncpy', `strndup' and
1119 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1120 function.
1122 * New function `statfs' in header <sys/statfs.h>.
1124 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1125 provide convenient functions for operating on blocks of null-terminated
1126 strings.
1128 * A new suite of functions in <utmp.h> handle all the details of reading
1129 and writing the utmp file.
1131 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1132 Thorsten Kukuk.
1134 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1135 completely POSIX compliant and also implemented the extended functionality
1136 to handle alternate digit representation and alternate era date formats.
1138 * Ulrich Drepper provided an implementation of the `strptime' function
1139 defined in XPG4.2 which transforms a string into a `struct tm' value.
1141 * Paul Eggert provided the tzselect shell script as part of the timezone
1142 code. The shell script makes it easy to select the correct timezone
1143 specification.
1145 * The implementation of the malloc family of functions is completely replaced
1146 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1147 The implementation uses the mmap function (if available) and it is
1148 optimized for the use in multi threaded programs.
1150 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1151 functions. This new functionality is usable by specifying a special
1152 salt string and it is compatible with implementation on *BSD systems.
1154 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1155 `getsubopt' to handle second level command line options, `bsd_signal'
1156 to access BSD style `signal' functionality, the obsolete `regexp' style
1157 expression matcher.
1159 * the `lchown' function is available on system which support this
1160 functionality.
1162 * The implementation of the shadow password handling function was contributed
1163 by Ulrich Drepper.
1165 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1167 * POSIX.1g support was added. The <sys/select.h> header is available,
1168 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1169 implementation of `getaddrinfo'.
1170 \f
1171 Version 1.09
1173 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1175 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1176 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1178 * The new function `daemon' from 4.4 BSD is useful for server programs that
1179 want to put themselves in the background.
1181 * Joel Sherrill has contributed support for several standalone boards that
1182 run without an operating system.
1184 * `printf', `scanf' and friends now accept a `q' type modifier for long
1185 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1187 * All of the code taken from BSD (notably most of the math and networking
1188 routines) has been updated from the BSD 4.4-Lite release.
1190 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1192 * The new functions `getdomainname' and `setdomainname' fetch or change the
1193 YP/NIS domain name. These are system calls which exist on systems which
1194 have YP (aka NIS).
1196 * The time zone data files have been updated for the latest international
1197 conventions.
1199 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1200 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1201 \f
1202 Version 1.08
1204 * The C library now includes support for Sun RPC, from Sun's free
1205 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1206 are included. (There is still no support for YP.)
1208 * Tom Quinn has contributed a port of the C library to SGI machines running
1209 Irix 4 (mips-sgi-irix4).
1211 * The new `lockf' function is a simplified interface to the locking
1212 facilities of `fcntl', included for compatibility.
1214 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1216 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1218 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1219 compatibility.
1221 * The error message printed by `assert' for a failed assertion now includes
1222 the name of the program (if using GNU ld) and the name of the calling
1223 function (with versions of GCC that support this).
1225 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1227 * The library now includes the <sys/mman.h> header file and memory
1228 management functions `mmap', `munmap', `mprotect', `msync', and
1229 `madvise', on systems that support those facilities.
1231 * The interface for `mcheck' has changed slightly: the function called to
1232 abort the program when an allocation inconsistency is detected now takes
1233 an argument that indicates the type of failure. The new function
1234 `mprobe' lets you request a consistency check for a particular block at
1235 any time (checks are normally done only when you call `free' or `realloc'
1236 on a block).
1238 * It is now possible to easily cross-compile the C library, building on one
1239 system a library to run on another machine and/or operating system. All
1240 you need to do is set the variable `HOST_CC' in `configparms' to the
1241 native compiler for programs to run on the machine you are building on (a
1242 few generator programs are used on Unix systems); set `CC' to the
1243 cross-compiler.
1245 * The new function `fexecve' (only implemented on the GNU system) executes
1246 a program file given a file descriptor already open on the file.
1247 \f
1248 Version 1.07
1250 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1251 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1253 * You can set the variable `libprefix' in `configparms' to specify a prefix
1254 to be prepended to installed library files; this makes it easy to install
1255 the GNU C library to be linked as `-lgnuc' or whatever.
1257 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1258 copies a limited number of characters from a string, and returns the
1259 address of the last character written.
1261 * You no longer need to check for whether the installed `stddef.h' is
1262 compatible with the GNU C library. configure now checks for you.
1264 * You can now define a per-stream `fileno' function to convert the
1265 stream's cookie into an integral file descriptor.
1267 * ``malloc (0)'' no longer returns a null pointer. Instead, it
1268 allocates zero bytes of storage, and returns a unique pointer which
1269 you can pass to `realloc' or `free'. The behavior is undefined if
1270 you dereference this pointer.
1272 * The C library now runs on Sony NEWS m68k machines running either
1273 NewsOS 3 or NewsOS 4.
1275 * The new `syscall' function is a system-dependent primitive function
1276 for invoking system calls. It has the canonical behavior on Unix
1277 systems, including unreliable return values for some calls (such as
1278 `pipe', `fork' and `getppid').
1280 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
1281 to `EAGAIN', which is the preferred name. On systems whose kernels
1282 use two distinct codes, the C library now translates EWOULDBLOCK to
1283 EAGAIN in every system call function.
1284 \f
1285 Version 1.06
1287 * The GNU C Library Reference Manual is now distributed with the library.
1288 `make dvi' will produce a DVI file of the printed manual.
1289 `make info' will produce Info files that you can read on line using C-h i
1290 in Emacs or the `info' program.
1291 Please send comments on the manual to bug-glibc-manual@gnu.org.
1293 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
1295 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
1297 * Jason Merrill has contributed a port to the Sequent Symmetry running
1298 Dynix version 3 (i386-sequent-dynix).
1300 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
1301 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
1303 * New function `memory_warnings' lets you arrange to get warnings when
1304 malloc is running out of memory to allocate, like Emacs gives you.
1306 * The C library now contains the relocating allocator used in Emacs 19 for
1307 its editing buffers. This allocator (ralloc) minimizes allocation
1308 overhead and fragmentation by moving allocated regions around whenever it
1309 needs to. You always refer to a ralloc'd region with a "handle" (a
1310 pointer to a pointer--an object of type `void **').
1312 * There is a new `printf' format: `%m' gives you the string corresponding
1313 to the error code in `errno'.
1315 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
1316 or `%[' conversion, but instead of filling in a fixed-sized buffer you
1317 pass, the `a' modifier says to fill in a `char **' you pass with a
1318 malloc'd string.
1320 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
1321 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
1322 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
1324 * `mkstemp' is a traditional Unix function to atomically create and open a
1325 uniquely-named temporary file.
1326 \f
1327 Version 1.05
1329 * The standard location for the file that says what the local timezone is
1330 has changed again. It is now `/usr/local/etc/localtime' (or more
1331 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
1333 * The distribution no longer contains any files with names longer than 14
1334 characters.
1336 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
1337 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
1339 * New functions `ttyslot' and `syslog' from 4.4 BSD.
1340 \f
1341 Version 1.04
1343 * The configuration process has changed quite a bit. The `configure'
1344 script is now used just like the configuration scripts for other GNU
1345 packages. The `sysdeps' directory hierarchy is much rearranged.
1346 The file `INSTALL' explains the new scheme in detail.
1348 * The header files no longer need to be processed into ANSI C and
1349 traditional C versions. There is just one set of files to install, and
1350 it will work with ANSI or old C compilers (including `gcc -traditional').
1352 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
1353 MIPS DECStation running Ultrix 4.
1355 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
1356 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
1357 made itself into a shared library.
1359 * Yet further improved support for the i386, running 4.3 BSD-like systems
1360 (such as Mach 3 with the Unix single-server), or System V.
1362 * New function `strncasecmp' to do case-insensitive string comparison
1363 with limited length.
1365 * New function `strsep' is a reentrant alternative to `strtok'.
1367 * New functions `scandir' and `alphasort' for searching directories.
1369 * New function `setenv' is a better interface to `putenv'.
1371 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
1372 function for traversing a directory tree.
1374 * The GNU obstack package is now also part of the C library.
1375 The new function `open_obstack_stream' creates a stdio stream that
1376 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
1377 formatted output directly to an obstack.
1379 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
1380 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
1382 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
1384 * The new functions `strfry' and `memfrob' do mysterious and wonderful
1385 things to your strings.
1387 * There are some new test programs: test-fseek, testmb, and testrand.
1389 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
1390 These ports are not finished, but are a good starting place for really
1391 supporting those systems.
1393 * `/etc/localtime' is now the standard location for the file that says what
1394 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
1395 This follows the general principle that `/etc' is the place for all local
1396 configuration files.
1398 * The C library header files now use `extern "C"' when used by the C++
1399 compiler, so the C library should now work with C++ code.
1401 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
1402 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
1403 in <strings.h>.)
1405 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
1406 function which uses the `merge sort' algorithm, and is said to be
1407 significantly faster than the old GNU `qsort' function. Merge sort is
1408 now the standard `qsort' function. The new algorithm can require a lot
1409 of temporary storage; so, the old sorting function is called when the
1410 required storage is not available.
1412 * The C library now includes Michael Glad's Ultra Fast Crypt, which
1413 provides the Unix `crypt' function, plus some other entry points.
1415 * The code and header files taken from 4.4 BSD have been updated with the
1416 latest files released from Berkeley.
1417 \f
1418 ----------------------------------------------------------------------
1419 Copyright information:
1421 Copyright (C) 1992-1999,2000,2001,2002 Free Software Foundation, Inc.
1423 Permission is granted to anyone to make or distribute verbatim copies
1424 of this document as received, in any medium, provided that the
1425 copyright notice and this permission notice are preserved,
1426 thus giving the recipient permission to redistribute in turn.
1428 Permission is granted to distribute modified versions
1429 of this document, or of portions of it,
1430 under the above conditions, provided also that they
1431 carry prominent notices stating who last changed them.
1432 \f
1433 Local variables:
1434 version-control: never
1435 End: