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1 GNU C Library NEWS -- history of user-visible changes. 2003-3-15
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 2.3.3
10 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
11 interrogate the dynamic linker, compatible with the Solaris interface.
13 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
14 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
15 \f
16 Version 2.3.2
18 * Thread-safe interfaces for many functions that access locale data
19 were added in version 2.3, but these features were omitted from NEWS.
20 Many functions have variants with an `_l' suffix that take a `locale_t'
21 object as a parameter rather than consulting the current locale.
22 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
23 create and maintain `locale_t' objects. Additionally, the new function
24 `uselocale' sets "the current locale" (as used by functions not so
25 parameterized) set for an individual thread. These features were added
26 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
28 * The functions getresuid, getresgid, setresuid, and setresgid, which
29 have long been available on Linux, are now declared in <unistd.h>
30 and are now also available on the Hurd.
32 * ELF thread-local storage support (TLS) now works on x86-64.
34 * The new dynamic string token $LIB is expanded in shared library names.
35 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
37 * Aldy Hernandez contributed complete software floating point support for
38 PowerPC machines with no FPU.
40 * fexecve is implemented on Linux.
42 * The `btowc' function should work at least twice as fast due to
43 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
45 * With approriate thread add-ons cancelable functions are now implemented
46 in libc.so as well. No need to call the function in libpthread. This
47 change allowed to finally disable the incorrect and expensive handling
48 of weak definition in ld.so.
50 * Yet more PLT entries in libc.so have been removed. We finally arrived
51 at the bare minimum. Startup times improved appropriately.
53 * Support for the new Linux/x86 system call interface was added. The
54 AT_SYSINFO auxiliary vector entry is recognized and handled.
55 \f
56 Version 2.3
58 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
59 charsets.
61 * iconv (the program and the interface) now accepts empty names (excluding
62 options like //TRANSLIT) to mean "use charset of current locale".
64 * localedef can now transliterate characters in strings which are not in
65 the provided charmap. The information from the input locale is used.
67 * Prelinking support was added for ELF targets. This requires additional
68 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
70 * Read-only stdio streams now use mmap to speed up operation by eliminating
71 copying and buffer underflows. To use add 'm' to the mode string of
72 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
74 * The malloc functions were completely rewritten by Wolfram Gloger based
75 on Doug Lea's malloc-2.7.0.c.
77 * Isamu Hasegawa contributed a completely new and POSIX-conformant
78 implementation of regex.
80 * Bruno Haible upgraded the iconv and locale implementation to support
81 Unicode 3.2.
83 * Contents of the LC_* and LANG environment variables in the CEN style are
84 not recognized anymore. It never was used. Change by Ulrich Drepper.
86 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
87 thread-local storage (TLS) ABI on some platforms.
88 Changes by Ulrich Drepper. SH support by Kaz Kojima.
90 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
91 EUC-JISX0213, and TSCII.
93 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
94 BSD-compatible interface for getting all network interface addresses.
95 Implementation for IPv4 by Roland McGrath.
97 * Loading of locale data is faster due to the introduction of a locale
98 archive. Implemented by Roland McGrath and Ulrich Drepper.
100 * Startup times are significantly reduced by not using exported functions
101 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
102 and Ulrich Drepper.
104 * Steven Munroe contributed a port to PowerPC64/Linux.
105 \f
106 Version 2.2.6
108 * The Hurd now uses the GNU libio implementation of stdio rather than the
109 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
111 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
112 with the same behavior as the Linux system call of the same name.
113 \f
114 Version 2.2.5
116 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
117 128-bit long double format.
119 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
120 IBM1161, and IBM1162 charsets.
122 * Andreas Jaeger contributed a port to x86-64/Linux.
124 * Peter Bruin contributed a port to PowerPC/Hurd.
126 * libc functions using I/O streams now can handle wide-oriented streams
127 as well.
129 * optimizations in the dynamic linker. Binaries created by recent binutils
130 versions start up quicker due to reduced time spent on relocations.
132 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
133 \f
134 Version 2.2.4
136 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
137 asinh, atanh, j0 for the 128-bit long double format.
139 * Bruno Haible updated all the code handling Unicode in some form to
140 support Unicode 3.1.
142 * Speed of regex for single-byte locales is back to previous levels.
143 Patch by Isamu Hasegawa.
145 * Alpha, SPARC, and IA-64 now also using floating stacks.
147 * Startup time of internationalized applications greatly improved through
148 iconv cache. Use iconvconfig to generate the cache file.
149 Contributed by Ulrich Drepper.
151 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
152 severe performance problems. Patch by David Mosberger.
154 * The Hurd port got a lot more functionality like AIO, various stdio
155 extensions, etc. Mainly done by Roland McGrath.
157 * mtrace can now lookup symbols in shared libraries.
158 \f
159 Version 2.2.3
161 * Intel's IA-64 math library is largely integrated. It provides fast and
162 accurate implementatations for most basic and standard math functions
163 in float, double, and long double format.
165 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
166 and asin for the 96-bit long double format and asin, log, tan for the
167 128-bit long double format.
169 * The beginning of a last-bit accurate math library by IBM Haifa were added.
170 The basic double functions exist today. Contributed by Abraham Ziv
171 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
172 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
174 * An asynchronous name lookup library was added. The interface is designed
175 after POSIX AIO. The proposal was circulated beforehand to get comments.
176 No negative ones came in. Implemented by Ulrich Drepper.
178 * Port to S390/64bit contributed by Martin Schwidefsky
179 <schwidefsky@de.ibm.com>.
181 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
182 of functions for Linux/IA-64.
184 * The RPC code is now thread safe. Threads can now use the same service
185 of different services at the same time. Patch by Eric Norum
186 <eric.norum@usask.ca> with some help by Ulrich Drepper.
188 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
189 family of functions for Linux/S390.
191 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
192 of functions for Linux/x86.
194 * Port to Linux/CRIS contributed by Axis Communications.
195 \f
196 Version 2.2.2
198 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
199 we can now check for namespace violations and missing declarations. The
200 result is that almost all headers are now Unix-compliant (as defined in
201 the upcoming XPG6). The negative side is that some programs might need
202 corrections, too, if they depend on the incorrect form of the headers in
203 previous versions which defined too many symbols and included too many
204 other headers.
206 * regex now handles multibyte character sets correctly.
207 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
209 * iconv (the program) does now conform to the upcoming XPG6 and handles
210 charmaps. Instead of the charset names the path of charmaps can be
211 provided and the conversion happens based on this data.
212 Contributed by Ulrich Drepper.
214 * The locale program now provides detailed information about the installed
215 locales. While
217 locale -a
219 only lists the names of the supported locales
221 locale -a --verbose
223 provides details such as country, language, and codeset name.
224 Contributed by Ulrich Drepper.
225 \f
226 Version 2.2.1
228 * The gencat program now parses the input file according to the charset
229 selected by the LC_CTYPE category. This is important for stateful
230 character sets. To make generating catalogs easier there is a way
231 to overwrite the charset selected by the locale: before the first
232 message or $ quote line the catalog can contain a line like
234 $ codeset=ISO-8859-2
236 to select the charset (ISO-8859-2 in this case).
238 Implemented by Shinya Hanataka and Ulrich Drepper.
240 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
241 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
242 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
244 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
245 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
247 * The LANGUAGE environment variable is now ignored unless the locale is
248 changed from the default "C" locale.
250 * The usual bug fixes.
251 \f
252 Version 2.2
254 * Greg McGary added runtime support for bounds checking using gcc's
255 new -fbounded-pointers option. ix86 target is complete. PowerPC
256 is in progress.
258 * Thorsten Kukuk added secure mode support to nscd.
260 * The Berkeley db libraries have been removed.
262 Related, the nss_db module is now in a separate package since it
263 obviously requires a database library being available.
265 * Wide character I/O streams implemented by Ulrich Drepper.
267 * Functions from the extended socket API added by Ulrich Drepper.
269 * Functions feenableexcept and fedisableexcept to control the
270 behaviour of individual exceptions have been added by Andreas Jaeger.
272 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
274 * The resolver code has been updated from bind 8.2.3-T5B which supports
275 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
276 and Mark Kettenis.
278 This change could in some situations effect backward compatibility. Since
279 now `_res' is a thread-local instead of a global variable, modifying it
280 in one thread does not have any effect in other threads.
282 The resolver library was also extended to allow IPv6 as the transport
283 protocol for the requests. This work was done by Stig Venaas.
285 * Compatibility code for K&R C compilers has been removed from the
286 header files. A ISO C compiler is needed to use the library
287 (conforming to either C89 or C99 standard).
289 * Complete rewrite of the localedef program to support multibyte character
290 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
291 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
292 Implemented by Ulrich Drepper.
294 Bruno Haible significantly improved the generation and use of the data
295 structures for the wide character tables.
297 * Plural handling in gettext implemented by Ulrich Drepper.
299 * The utmp daemon has been removed.
301 * The port to MIPS-Linux has been finished by Andreas Jaeger.
303 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
304 and Yutaka Niibe.
306 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
308 * POSIX barriers implemented by Kaz Kylheku.
310 * POSIX spawn function family implemented by Ulrich Drepper.
312 * POSIX spinlocks are now available.
314 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
316 * the configure option --enable-kernel=X.Y.Z allows to strip out
317 compatibility for kernel versions before X.Y.Z. This is currently only
318 implemented for Linux.
320 * the sockaddr_in6 structure changed. The IPv6 working group added a new
321 field sin6_scope_id. This means that all programs using IPv6 should be
322 recompiled. Don't expect binary compatibility with previous glibc
323 versions.
325 * various conversion modules for IBM character sets contributed by
326 Masahide Washizawa.
328 * IA-64 port by Jes Sorensen and HJ Lu.
330 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
331 Compiling the GNU C Library for Linux/ia64
332 ******************************************
334 Please refer to the file INSTALL in the same directory as you found
335 this file for general information about configuring and compiling
336 glibc.
338 For general inquiries about glibc under Linux/ia64 please use the
339 following mailing list linux-ia64@linuxia64.org or one of the relevant
340 glibc mailing lists.
342 Recommended Tools for Compilation
343 =================================
345 In order for glibc-2.2 to build correctly on the ia64 you need at
346 least the following versions of the GNU tools (the :
348 * The Cygnus toolchain snapshot for the ia64 as of August 4
349 including the provided set of patches. It is however recommend
350 you use the October 24 toolchain snapshot or a more recent version.
352 OR alternatively you can try the following (the Cygnus toolchain is
353 the recommended solution):
355 * GCC and binutils, GAS and GNU LD out of CVS from
356 sources.redhat.com as of August 28, 2000 or later. The CVS tree
357 may require special patches to work properly on the ia64.
359 Configuring and compiling GNU Libc for Linux/ia64
360 =================================================
362 The library requires Linux kernel version 2.4.0-test4-000728 or
363 later to funtion properly. Besides that it support for debug libraries
364 is currently untested. Hence the following options
365 are required for configuring the library:
367 --disable-debug --enable-kernel=2.4.0
369 It is also important that you make sure the library picks up the
370 appropriate kernel header files, if you do not have recent enough
371 kernel headers in /usr/src/linux/include, you should use the
372 --with-headers=<path> option to specify the location.
374 As an example I personally use the following options to configure
375 the library:
377 --disable-debug
378 --disable-cvs
379 --enable-kernel=2.4.0
380 --host=ia64-linux
381 --enable-add-ons=yes
382 --prefix=/usr
383 --with-headers=/home/jes/linux/include
386 Good luck
388 Jes Sorensen <jes@linuxcare.com>,
389 November 14th, 2000
390 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
391 \f
392 Version 2.1.3
394 * bug fixes
396 \f
397 Version 2.1.2
399 * bug fixes
401 \f
402 Version 2.1.1
404 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
406 * New xdr functions are added; some rpc functions are now 64bit clean.
408 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
410 * Fixed known incompatibilities with glibc 2.0.
412 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
414 * Optimized a number of functions (especially the ELF dynamic loader).
416 * Update timezone data files.
418 * lots of charmaps corrections
420 * some new locale definitions and charmaps
422 \f
423 Version 2.1
425 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
426 conform to POSIX member type requirements. Symbol versions have been
427 adjusted as needed within the library, and for direct use by applications,
428 but there is potential for problems if third-party libraries use
429 struct timeval as part of their interface. This does not present
430 a problem for X and other "essential" system libraries.
432 * An additional locale model to support C++ Standard Library locale
433 model and probably more was implemented by Ulrich Drepper.
435 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
436 symbol level.
438 * Miles Bader provided the `argp' function family to support hierachical
439 command line argument parsing, layered on top of getopt.
441 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
443 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
444 numbers.
446 * scanf recognizes the %a and %A format for scanning floating point numbers.
448 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
449 information and interfaces for the available integer types.
451 * about 130 new math functions were added to implement the ISO C9x math
452 library.
454 * the new header <complex.h> contains definitions of the complex math
455 functions from ISO C 9X.
457 * the new header <tgmath.h> defines generic macros to use complex or
458 real valued functions.
460 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
462 * Andreas Jaeger provided a test suite for the math library.
464 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
466 * Ulrich Drepper added character set conversion functions (iconv).
468 * Optimized string functions have been added.
470 * The localedata addon is now part of glibc.
472 * An implementation of profiling shared libraries was added by Ulrich Drepper.
474 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
475 daemon for NSS (nscd).
477 Missing a better place here are some numbers on improvements. Under
478 Linux 2.1.125 un-tar-ing the kernel sources takes
480 user system wall
482 using local files 12.19s 6.88s 22.91s
484 using NIS 13.92s 8.91s 26.34s
486 using NIS & nscd 10.37s 7.34s 25.30s
488 using NIS+ 27.57s 30.37s 640.46s
490 using NIS+ & nscd 10.25s 7.83s 26.51s
492 using NIS & old nscd [1] 13.83s 8.32s 29.60s
494 Keep in mind that non-namelookup related operations dominate above times.
495 It was just a common complain that using NIS+ unpacking the kernel is
496 horribly slow.
498 [1] The old nscd implementation is not available anymore since it was
499 distributed with glibc up to version 2.0.98 and thus is now replaced.
501 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
503 * Mark Kettenis provided a Hesiod NSS module.
505 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
506 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
508 * rcmd can now handle netgroups (Dick Streefland).
510 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
511 Bambrough.
513 * Support for the IPv6 protocol has been added to the socket API, as per the
514 latest draft standards.
516 * Support for Linux 2.2 has been added.
518 * Interface changes relative to the latest 2.0.x release:
519 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
520 addseverity NEW: Unix98
521 alphasort64 NEW: LFS
522 argp_err_exit_status NEW: argp, GNU ext
523 argp_error NEW: argp, GNU ext
524 argp_failure NEW: argp, GNU ext
525 argp_help NEW: argp, GNU ext
526 argp_parse NEW: argp, GNU ext
527 argp_program_bug_address NEW: argp, GNU ext
528 argp_program_version NEW: argp, GNU ext
529 argp_program_version_hook NEW: argp, GNU ext
530 argp_state_help NEW: argp, GNU ext
531 argp_usage NEW: argp, GNU ext
532 authdes_create NEW: Secure RPC
533 authdes_getucred NEW: Secure RPC
534 authdes_pk_create NEW: Secure RPC
535 backtrace NEW: GNU ext.
536 backtrace_symbols NEW: GNU ext.
537 backtrace_symbols_fd NEW: GNU ext.
538 cacos NEW: ISO C 9x
539 cacosf NEW: ISO C 9x
540 cacosh NEW: ISO C 9x
541 cacoshf NEW: ISO C 9x
542 cacoshl NEW: ISO C 9x
543 cacosl NEW: ISO C 9x
544 capget NEW: kernel
545 capset NEW: kernel
546 carg NEW: ISO C 9x
547 cargf NEW: ISO C 9x
548 cargl NEW: ISO C 9x
549 casin NEW: ISO C 9x
550 casinf NEW: ISO C 9x
551 casinh NEW: ISO C 9x
552 casinhf NEW: ISO C 9x
553 casinhl NEW: ISO C 9x
554 casinl NEW: ISO C 9x
555 catan NEW: ISO C 9x
556 catanf NEW: ISO C 9x
557 catanh NEW: ISO C 9x
558 catanhf NEW: ISO C 9x
559 catanhl NEW: ISO C 9x
560 catanl NEW: ISO C 9x
561 cbc_crypt NEW: Secure RPC
562 ccos NEW: ISO C 9x
563 ccosf NEW: ISO C 9x
564 ccosh NEW: ISO C 9x
565 ccoshf NEW: ISO C 9x
566 ccoshl NEW: ISO C 9x
567 ccosl NEW: ISO C 9x
568 cexp NEW: ISO C 9x
569 cexpf NEW: ISO C 9x
570 cexpl NEW: ISO C 9x
571 cimag NEW: ISO C 9x
572 cimagf NEW: ISO C 9x
573 cimagl NEW: ISO C 9x
574 clearerr_locked REMOVED
575 clntunix_create NEW: sunrpc ext
576 clog NEW: ISO C 9x
577 clog10 NEW: ISO C 9x
578 clog10f NEW: ISO C 9x
579 clog10l NEW: ISO C 9x
580 clogf NEW: ISO C 9x
581 clogl NEW: ISO C 9x
582 conj NEW: ISO C 9x
583 conjf NEW: ISO C 9x
584 conjl NEW: ISO C 9x
585 cpow NEW: ISO C 9x
586 cpowf NEW: ISO C 9x
587 cpowl NEW: ISO C 9x
588 cproj NEW: ISO C 9x
589 cprojf NEW: ISO C 9x
590 cprojl NEW: ISO C 9x
591 creal NEW: ISO C 9x
592 crealf NEW: ISO C 9x
593 creall NEW: ISO C 9x
594 creat64 NEW: LFS
595 csin NEW: ISO C 9x
596 csinf NEW: ISO C 9x
597 csinh NEW: ISO C 9x
598 csinhf NEW: ISO C 9x
599 csinhl NEW: ISO C 9x
600 csinl NEW: ISO C 9x
601 csqrt NEW: ISO C 9x
602 csqrtf NEW: ISO C 9x
603 csqrtl NEW: ISO C 9x
604 ctan NEW: ISO C 9x
605 ctanf NEW: ISO C 9x
606 ctanh NEW: ISO C 9x
607 ctanhf NEW: ISO C 9x
608 ctanhl NEW: ISO C 9x
609 ctanl NEW: ISO C 9x
610 des_setparity NEW: Secure RPC
611 ecb_crypt NEW: Secure RPC
612 endutxent NEW: Unix98
613 exp10 NEW: ISO C 9x
614 exp10f NEW: ISO C 9x
615 exp10l NEW: ISO C 9x
616 exp2 NEW: ISO C 9x
617 exp2f NEW: ISO C 9x
618 exp2l NEW: ISO C 9x
619 fattach NEW: STREAMS
620 fdetach NEW: STREAMS
621 fdim NEW: ISO C 9x
622 fdimf NEW: ISO C 9x
623 fdiml NEW: ISO C 9x
624 feclearexcept NEW: ISO C 9x
625 fegetenv NEW: ISO C 9x
626 fegetexceptflag NEW: ISO C 9x
627 fegetround NEW: ISO C 9x
628 feholdexcept NEW: ISO C 9x
629 feof_locked REMOVED
630 feraiseexcept NEW: ISO C 9x
631 ferror_locked REMOVED
632 fesetenv NEW: ISO C 9x
633 fesetexceptflag NEW: ISO C 9x
634 fesetround NEW: ISO C 9x
635 fetestexcept NEW: ISO C 9x
636 feupdateenv NEW: ISO C 9x
637 fflush_locked REMOVED
638 ffsl NEW: GNU ext.
639 ffsll NEW: GNU ext.
640 fgetpos64 NEW: LFS
641 fgets_unlocked NEW: GNU ext.
642 fileno_locked REMOVED
643 fma NEW: ISO C 9x
644 fmaf NEW: ISO C 9x
645 fmal NEW: ISO C 9x
646 fmax NEW: ISO C 9x
647 fmaxf NEW: ISO C 9x
648 fmaxl NEW: ISO C 9x
649 fmin NEW: ISO C 9x
650 fminf NEW: ISO C 9x
651 fminl NEW: ISO C 9x
652 fmtmsg NEW: Unix98
653 fopen64 NEW: LFS
654 fputc_locked REMOVED
655 fputs_unlocked NEW: GNU ext.
656 fread_unlocked NEW: GNU ext.
657 freopen64 NEW: LFS
658 fseeko NEW: Unix98
659 fsetpos64 NEW: LFS
660 fstatfs64 NEW: LFS
661 fstatvfs NEW: Unix98
662 fstatvfs64 NEW: LFS
663 ftello NEW: Unix98
664 ftello64 NEW: LFS
665 ftruncate64 NEW: LFS
666 ftw64 NEW: LFS
667 fwrite_unlocked NEW: GNU ext.
668 gai_strerror NEW: IPv6
669 gamma_r REMOVED
670 gammaf_r REMOVED
671 gammal_r REMOVED
672 getchar_locked REMOVED
673 getdate NEW: Unix98
674 getdate_err NEW: Unix98
675 getdate_r NEW: GNU ext.
676 getmsg NEW: STREAMS
677 getnameinfo NEW: IPv6
678 getnetname NEW: Secure RPC
679 getpmsg NEW: STREAMS
680 getpt NEW: Unix98 PTY
681 getrlimit64 NEW: LFS
682 getutxent NEW: Unix98
683 getutxid NEW: Unix98
684 getutxline NEW: Unix98
685 glob64 NEW: GNU ext.
686 globfree64 NEW: GNU ext.
687 gnu_get_libc_release NEW: GNU ext.
688 gnu_get_libc_version NEW: GNU ext.
689 grantpt NEW: Unix98 PTY
690 host2netname NEW: Secure RPC
691 iconv NEW: iconv
692 iconv_close NEW: iconv
693 iconv_open NEW: iconv
694 if_freenameindex NEW: IPv6
695 if_indextoname NEW: IPv6
696 if_nameindex NEW: IPv6
697 if_nametoindex NEW: IPv6
698 in6addr_any NEW: IPv6
699 in6addr_loopback NEW: IPv6
700 inet6_isipv4mapped NEW: IPv6
701 isastream NEW: STREAMS
702 iswblank NEW: GNU ext.
703 key_decryptsession NEW: Secure RPC
704 key_decryptsession_pk NEW: Secure RPC
705 key_encryptsession NEW: Secure RPC
706 key_encryptsession_pk NEW: Secure RPC
707 key_gendes NEW: Secure RPC
708 key_get_conv NEW: Secure RPC
709 key_secretkey_is_set NEW: Secure RPC
710 key_setnet NEW: Secure RPC
711 key_setsecret NEW: Secure RPC
712 llrint NEW: ISO C 9x
713 llrintf NEW: ISO C 9x
714 llrintl NEW: ISO C 9x
715 llround NEW: ISO C 9x
716 llroundf NEW: ISO C 9x
717 llroundl NEW: ISO C 9x
718 log2 NEW: ISO C 9x
719 log2f NEW: ISO C 9x
720 log2l NEW: ISO C 9x
721 lrint NEW: ISO C 9x
722 lrintf NEW: ISO C 9x
723 lrintl NEW: ISO C 9x
724 lround NEW: ISO C 9x
725 lroundf NEW: ISO C 9x
726 lroundl NEW: ISO C 9x
727 lseek64 NEW: LFS
728 makecontext NEW: Unix98
729 mempcpy NEW: GNU ext.
730 mmap64 NEW: LFS
731 moncontrol REMOVED
732 modify_ldt NEW: kernel
733 nan NEW: ISO C 9x
734 nanf NEW: ISO C 9x
735 nanl NEW: ISO C 9x
736 nearbyint NEW: ISO C 9x
737 nearbyintf NEW: ISO C 9x
738 nearbyintl NEW: ISO C 9x
739 netname2host NEW: Secure RPC
740 netname2user NEW: Secure RPC
741 nexttoward NEW: ISO C 9x
742 nexttowardf NEW: ISO C 9x
743 nexttowardl NEW: ISO C 9x
744 nftw NEW: Unix98
745 nftw64 NEW: LFS
746 open64 NEW: LFS
747 passwd2des NEW: Secure RPC
748 pow10 NEW: GNU ext.
749 pow10f NEW: GNU ext.
750 pow10l NEW: GNU ext.
751 pread NEW: Unix98
752 pread64 NEW: LFS
753 printf_size NEW: GNU ext.
754 printf_size_info NEW: GNU ext.
755 profil_counter REMOVED
756 pthread_mutexattr_getkind_np REPLACED
757 pthread_mutexattr_setkind_np REPLACED
758 ptsname NEW: Unix98 PTY
759 ptsname_r NEW: Unix98 PTY
760 putc_locked REMOVED
761 putchar_locked REMOVED
762 putgrent NEW: GNU ext.
763 putmsg NEW: STREAMS
764 putpmsg NEW: STREAMS
765 pututxline NEW: Unix98
766 pwrite NEW: Unix98
767 pwrite64 NEW: LFS
768 readdir64 NEW: LFS
769 readdir64_r NEW: LFS
770 remquo NEW: ISO C 9x
771 remquof NEW: ISO C 9x
772 remquol NEW: ISO C 9x
773 round NEW: ISO C 9x
774 roundf NEW: ISO C 9x
775 roundl NEW: ISO C 9x
776 rtime NEW: GNU ext.
777 scalbln NEW: ISO C 9x
778 scalblnf NEW: ISO C 9x
779 scalblnl NEW: ISO C 9x
780 scandir64 NEW: LFS
781 sendfile NEW: kernel
782 setcontext NEW: Unix98
783 setrlimit64 NEW: LFS
784 setutxent NEW: Unix98
785 sighold NEW: Unix98
786 sigignore NEW: Unix98
787 sigqueue NEW: POSIX.1b
788 sigrelse NEW: Unix98
789 sigset NEW: POSIX.1b
790 sigtimedwait NEW: POSIX.1b
791 sigwaitinfo NEW: POSIX.1b
792 sincos NEW: GNU ext.
793 sincosf NEW: GNU ext.
794 sincosl NEW: GNU ext.
795 statfs64 NEW: LFS
796 statvfs NEW: Unix98
797 statvfs64 NEW: LFS
798 strcasestr NEW: GNU ext.
799 strtoimax NEW: ISO C 9x
800 strtoumax NEW: ISO C 9x
801 strverscmp NEW: GNU ext.
802 svcauthdes_stats NEW: Secure RPC
803 svcunix_create NEW: sunrpc etx
804 svcunixfd_create NEW: sunrpc ext
805 swapcontext NEW: Unix98
806 tcgetsid NEW: Unix98 PTY
807 tdestroy NEW: GNU ext.
808 tgamma NEW: ISO C 9x
809 tgammaf NEW: ISO C 9x
810 tgammal NEW: ISO C 9x
811 tmpfile64 NEW: LFS
812 trunc NEW: ISO C 9x
813 truncate64 NEW: LFS
814 truncf NEW: ISO C 9x
815 truncl NEW: ISO C 9x
816 umount2 NEW: kernel
817 unlockpt NEW: Unix98 PTY
818 updwtmpx NEW: Unix98
819 user2netname NEW: Secure RPC
820 utmpxname NEW: Unix98
821 versionsort NEW: GNU ext.
822 versionsort64 NEW: GNU ext.
823 waitid NEW: Unix98
824 wcscasecmp NEW: GNU ext.
825 wcsncasecmp NEW: GNU ext.
826 wcsnlen NEW: GNU ext.
827 wcstoimax NEW: ISO C 9x
828 wcstoll NEW: ISO C 9x
829 wcstoull NEW: ISO C 9x
830 wcstoumax NEW: ISO C 9x
831 wcswcs NEW: Unix98
832 wordexp NEW: POSIX.2
833 wordfree NEW: POSIX.2
834 write_profiling REMOVED
835 xdecrypt NEW: Secure RPC
836 xdr_authdes_cred NEW: Secure RPC
837 xdr_authdes_verf NEW: Secure RPC
838 xdr_cryptkeyarg NEW: Secure RPC
839 xdr_cryptkeyarg2 NEW: Secure RPC
840 xdr_cryptkeyres NEW: Secure RPC
841 xdr_getcredres NEW: Secure RPC
842 xdr_key_netstarg NEW: Secure RPC
843 xdr_key_netstres NEW: Secure RPC
844 xdr_keybuf NEW: Secure RPC
845 xdr_keystatus NEW: Secure RPC
846 xdr_netnamestr NEW: Secure RPC
847 xdr_sizeof NEW: Secure RPC
848 xdr_unixcred NEW: sunrpc ext
849 xencrypt NEW: Secure RPC
850 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
851 \f
852 Version 2.0.6
854 * more bug fixes
856 \f
857 Version 2.0.5
859 * more bug fixes
861 * inet_ntoa is thread-safe
863 * updwtmp is moved from libutil to libc
865 * rewrite of cbrt function
867 * update of timezone data
868 \f
869 Version 2.0.4
871 * more bug fixes
872 \f
873 Version 2.0.3
875 * more bug fixes
876 \f
877 Version 2.0.2
879 * more bug fixes
881 * add atoll function
883 * fix complex problems in Berkeley DB code
885 * fix math functions
886 \f
887 Version 2.0.1
889 * fixed lots of header problems (especially Linux/GNU specific)
891 * dynamic loader preserves all registers
893 * Roland McGrath provided support for handling of auxiliary objects in
894 the ELF dynamic loader.
896 * support for parallel builds is improved
897 \f
898 Version 2.0
900 * GNU extensions are no longer declared by default. To enable them you
901 must define the macro `_GNU_SOURCE' in your program or compile with
902 `-D_GNU_SOURCE'.
904 * The library has changed from using GNU ld symbol aliases to using weak
905 symbols where available. The ELF object file format supports weak
906 symbols; GNU ld also supports weak symbols in the a.out format. (There
907 is also now support for other GNU ld extensions in ELF. Use the
908 `--with-elf' option to configure to indicate you have ELF, and
909 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
910 of many files which contained only symbol aliases, reducing the size of
911 the source and the compiled library; many other files were renamed to
912 less cryptic names previously occupied by the symbol alias files.
913 There is a new header file <elf.h> for programs which operate on
914 files in the ELF format.
916 * Converted to Autoconf version 2, so `configure' has more options.
917 Run `configure --help' to see the details.
919 * The library can now be configured to build profiling, highly-optimized
920 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
921 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
922 `configure' enable building these extra libraries. The shared library is
923 built by default when using both ELF and GNU ld. When shared libraries
924 are enabled, the new library `-ldl' is available for arbitrary run-time
925 loading of shared objects; its interface is defined in <dlfcn.h>. The
926 new header file <link.h> gives access to the internals of the run-time
927 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
928 application of same name on other systems and it provides information
929 about dynamically linked binaries.
931 * The C library now provides the run-time support code for profiling
932 executables compiled with `-pg'. Programs can control the profiling code
933 through the interface in <sys/gmon.h>. The `gmon.out' files written by
934 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
935 the support for this file format was contributed by David Mosberger-Tang.
937 * The math code has been replaced with a math library based on fdlibm from
938 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
939 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
940 functions. The math functions now reside in a separate library, so
941 programs using them will need to use `-lm' their linking commands.
943 * John C. Bowman contributed optimized ix87 assembler inline functions.
945 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
946 mechanism similar to that found in Solaris 2. This is now used for the
947 group, passwd, hosts, networks, services, protocols, rpc, ethers,
948 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
949 file controls what services are used for each individual database. This
950 works by loading shared libraries with names specified in `nsswitch.conf',
951 so service modules can be changed or added at any time without even
952 relinking any program. Currently there are the file, db, and NIS based
953 NSS services available.
955 * The new functions `strtoq' and `strtouq' parse integer values from
956 strings, like `strtol' and `strtoul', but they return `long long int' and
957 `unsigned long long int' values, respectively (64-bit quantities).
959 * The new functions `strtof' and `strtold' parse floating-point values from
960 strings, like `strtod', but they return `float' and `long double' values,
961 respectively (on some machines `double' and `long double' are the same).
963 * Ulrich Drepper has contributed new implementations of the floating-point
964 printing and reading code used in the `printf' family of functions and
965 `strtod', `strtof', and `strtold'. These new functions are perfectly
966 accurate, and much faster than the old ones.
968 * The implementation of the POSIX locale model was completely rewritten by
969 Ulrich Drepper. This includes the new programs `localedef' and `locale'
970 to compile the POSIX locale definition.
972 * The former dummy implementations of the strcoll and strxfrm function are
973 now replaced by fully functional code contributed by Ulrich Drepper. The
974 collation information comes from the POSIX locale definitions.
976 * The new header <langinfo.h> defines an interface for accessing
977 various locale-dependent data (using the locale chosen with `setlocale').
979 * Ulrich Drepper has contributed a new suite of functions for operation on
980 wide-character and multibyte-character strings, in <wchar.h>;
981 and classification and case conversion of wide characters, in <wctype.h>.
982 These new functions are conforming to the ISO C, Amendement 1 specification.
984 * There is now a second implementation of the standard I/O library available.
985 It comes from GNU libg++ as was written by Per Bothner, heavily modified
986 by Hongjiu Lu and made thread safe by Ulrich Drepper.
988 * You can now use positional parameter specifications in format strings
989 for the `printf' and `scanf' families of functions. For example,
990 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
991 ``Number 6, Mr Jones''. This is mainly useful when providing different
992 format strings for different languages, whose grammars may dictate
993 different orderings of the values being printed. To support this
994 feature, the interface for `register_printf_handler' has changed; see
995 the header file <printf.h> for details.
997 * The `printf' and `scanf' families of functions now understand a new
998 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
999 to group numbers as indicated by the locale; for `scanf' and friends, this
1000 says to accept as valid only a number with all the proper grouping
1001 separators in the right places. In the default "C" locale, numbers are
1002 not grouped; but locales for specific countries will define the usual
1003 conventions (i.e. separate thousands with `,' in the US locale).
1005 * The pgrp functions have been regularized, slightly incompatibly but much
1006 less confusingly. The core functions are now `getpgid' and `setpgid',
1007 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1008 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1009 provided for compatibility. There is no longer an incompatible `getpgrp'
1010 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1012 * The new header file <fts.h> and suite of functions simplify programs that
1013 operate on directory trees. This code comes from 4.4 BSD.
1015 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1016 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1017 NSS scheme used in glibc.
1019 * There is a new malloc debugging hook `__memalign_hook'.
1021 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1022 `unsigned int' in <sys/types.h>. These are for compatibility only and
1023 their use is discouraged.
1025 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1026 done differently, so that it works even without GNU ld.
1028 * New function `euidaccess' checks allowed access to a file like `access',
1029 but using the effective IDs instead of the real IDs.
1031 * The time zone data files have been updated for the latest and greatest
1032 local time conventions of the countries of the world.
1034 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1035 see <dirent.h>.
1037 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1038 for formatting floating-point numbers. They are provided only for
1039 compatibility; new programs should use `sprintf' instead. There are
1040 also equivalent function for the `long double' floating-point type and
1041 all functions also exist in a reentrant form.
1043 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1044 functions for maintaining the login-record files (primarily of use to
1045 system programs such as `login'), and convenient functions for
1046 allocating and initializing a pseudo-terminal (pty) device.
1048 * Ulrich Drepper has contributed new support for System V style
1049 shared memory and IPC on systems that support it.
1051 * Ulrich Drepper has contributed several miscellaneous new functions found
1052 in System V: The `hsearch' family of functions provide an effective
1053 implementation of hash tables; `a64l' and `l64a' provide a very simple
1054 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1055 number generator.
1057 * Ulrich Drepper has contributed new reentrant counterparts for the
1058 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1060 * Ulrich Drepper has contributed new, highly-optimized versions of several
1061 string functions for the i486/Pentium family of processors.
1063 * Ulrich Drepper has updated the Linux-specific code, based largely
1064 on work done in Hongjiu Lu's version of GNU libc for Linux.
1065 The GNU library now supports Linux versions 2.0.10 and later,
1066 using the ELF object file format (i[3456]86-*-linux).
1068 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1070 * David Mosberger-Tang and Richard Henderson have ported the C library
1071 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1072 dynamic linking support for ELF/Alpha.
1074 * Richard Henderson contributed several Alpha optimized assembler function
1075 for arithmetic and string handling.
1077 * Ulrich Drepper has contributed a new set of message catalog functions to
1078 support multiple languages using the <libintl.h> interface, for use with
1079 his new package GNU gettext. Translation volunteers have contributed
1080 catalogs of the library's messages in Spanish, German, and Korean.
1082 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1083 program and the `catgets' function for reading the catalog files it
1084 creates. (The <libintl.h> interface is preferred; we include the
1085 <nl_types.h> interface using `catgets' only for source compatibility with
1086 programs already written to use it.)
1088 * New header file <values.h> gives SVID-compatible names for <limits.h>
1089 constants.
1091 * Various new macros, declarations, and small header files for compatibility
1092 with 4.4 BSD.
1094 * New function `group_member' is a convenient way to check if a process has
1095 a given effective group ID.
1097 * When using GCC 2.7 and later, the socket functions are now declared in a
1098 special way so that passing an argument of type `struct sockaddr_in *',
1099 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1100 `struct sockaddr *' type, does not generate a type-clash warning.
1102 * New function `error' declared in header file <error.h> is a convenient
1103 function for printing error messages and optionally exiting; this is the
1104 canonical function used in GNU programs. The new functions `err', `warn',
1105 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1106 doing the same thing.
1108 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1109 POSIX.2 `glob' function to do ~ and {...} expansion.
1111 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1112 `clearenv' which is used in POSIX.9 is also available.
1114 * New function `getsid' returns session ID number on systems that support it.
1116 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1117 files <db.h> and <mpool.h> provide a rich set of functions for several
1118 types of simple databases stored in memory and in files, and <ndbm.h> is
1119 an old `ndbm'-compatible interface using the `db' functions. Link with
1120 `-ldb' to get these functions.
1122 * New macro `strdupa' copies a string like `strdup', but uses local stack
1123 space from `alloca' instead of dynamic heap space from `malloc'.
1125 * New function `strnlen' is like `strlen' but searches only a given maximum
1126 number of characters for the null terminator. `stpncpy', `strndup' and
1127 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1128 function.
1130 * New function `statfs' in header <sys/statfs.h>.
1132 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1133 provide convenient functions for operating on blocks of null-terminated
1134 strings.
1136 * A new suite of functions in <utmp.h> handle all the details of reading
1137 and writing the utmp file.
1139 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1140 Thorsten Kukuk.
1142 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1143 completely POSIX compliant and also implemented the extended functionality
1144 to handle alternate digit representation and alternate era date formats.
1146 * Ulrich Drepper provided an implementation of the `strptime' function
1147 defined in XPG4.2 which transforms a string into a `struct tm' value.
1149 * Paul Eggert provided the tzselect shell script as part of the timezone
1150 code. The shell script makes it easy to select the correct timezone
1151 specification.
1153 * The implementation of the malloc family of functions is completely replaced
1154 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1155 The implementation uses the mmap function (if available) and it is
1156 optimized for the use in multi threaded programs.
1158 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1159 functions. This new functionality is usable by specifying a special
1160 salt string and it is compatible with implementation on *BSD systems.
1162 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1163 `getsubopt' to handle second level command line options, `bsd_signal'
1164 to access BSD style `signal' functionality, the obsolete `regexp' style
1165 expression matcher.
1167 * the `lchown' function is available on system which support this
1168 functionality.
1170 * The implementation of the shadow password handling function was contributed
1171 by Ulrich Drepper.
1173 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1175 * POSIX.1g support was added. The <sys/select.h> header is available,
1176 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1177 implementation of `getaddrinfo'.
1178 \f
1179 Version 1.09
1181 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1183 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1184 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1186 * The new function `daemon' from 4.4 BSD is useful for server programs that
1187 want to put themselves in the background.
1189 * Joel Sherrill has contributed support for several standalone boards that
1190 run without an operating system.
1192 * `printf', `scanf' and friends now accept a `q' type modifier for long
1193 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1195 * All of the code taken from BSD (notably most of the math and networking
1196 routines) has been updated from the BSD 4.4-Lite release.
1198 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1200 * The new functions `getdomainname' and `setdomainname' fetch or change the
1201 YP/NIS domain name. These are system calls which exist on systems which
1202 have YP (aka NIS).
1204 * The time zone data files have been updated for the latest international
1205 conventions.
1207 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1208 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1209 \f
1210 Version 1.08
1212 * The C library now includes support for Sun RPC, from Sun's free
1213 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1214 are included. (There is still no support for YP.)
1216 * Tom Quinn has contributed a port of the C library to SGI machines running
1217 Irix 4 (mips-sgi-irix4).
1219 * The new `lockf' function is a simplified interface to the locking
1220 facilities of `fcntl', included for compatibility.
1222 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1224 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1226 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1227 compatibility.
1229 * The error message printed by `assert' for a failed assertion now includes
1230 the name of the program (if using GNU ld) and the name of the calling
1231 function (with versions of GCC that support this).
1233 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1235 * The library now includes the <sys/mman.h> header file and memory
1236 management functions `mmap', `munmap', `mprotect', `msync', and
1237 `madvise', on systems that support those facilities.
1239 * The interface for `mcheck' has changed slightly: the function called to
1240 abort the program when an allocation inconsistency is detected now takes
1241 an argument that indicates the type of failure. The new function
1242 `mprobe' lets you request a consistency check for a particular block at
1243 any time (checks are normally done only when you call `free' or `realloc'
1244 on a block).
1246 * It is now possible to easily cross-compile the C library, building on one
1247 system a library to run on another machine and/or operating system. All
1248 you need to do is set the variable `HOST_CC' in `configparms' to the
1249 native compiler for programs to run on the machine you are building on (a
1250 few generator programs are used on Unix systems); set `CC' to the
1251 cross-compiler.
1253 * The new function `fexecve' (only implemented on the GNU system) executes
1254 a program file given a file descriptor already open on the file.
1255 \f
1256 Version 1.07
1258 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1259 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1261 * You can set the variable `libprefix' in `configparms' to specify a prefix
1262 to be prepended to installed library files; this makes it easy to install
1263 the GNU C library to be linked as `-lgnuc' or whatever.
1265 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1266 copies a limited number of characters from a string, and returns the
1267 address of the last character written.
1269 * You no longer need to check for whether the installed `stddef.h' is
1270 compatible with the GNU C library. configure now checks for you.
1272 * You can now define a per-stream `fileno' function to convert the
1273 stream's cookie into an integral file descriptor.
1275 * ``malloc (0)'' no longer returns a null pointer. Instead, it
1276 allocates zero bytes of storage, and returns a unique pointer which
1277 you can pass to `realloc' or `free'. The behavior is undefined if
1278 you dereference this pointer.
1280 * The C library now runs on Sony NEWS m68k machines running either
1281 NewsOS 3 or NewsOS 4.
1283 * The new `syscall' function is a system-dependent primitive function
1284 for invoking system calls. It has the canonical behavior on Unix
1285 systems, including unreliable return values for some calls (such as
1286 `pipe', `fork' and `getppid').
1288 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
1289 to `EAGAIN', which is the preferred name. On systems whose kernels
1290 use two distinct codes, the C library now translates EWOULDBLOCK to
1291 EAGAIN in every system call function.
1292 \f
1293 Version 1.06
1295 * The GNU C Library Reference Manual is now distributed with the library.
1296 `make dvi' will produce a DVI file of the printed manual.
1297 `make info' will produce Info files that you can read on line using C-h i
1298 in Emacs or the `info' program.
1299 Please send comments on the manual to bug-glibc-manual@gnu.org.
1301 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
1303 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
1305 * Jason Merrill has contributed a port to the Sequent Symmetry running
1306 Dynix version 3 (i386-sequent-dynix).
1308 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
1309 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
1311 * New function `memory_warnings' lets you arrange to get warnings when
1312 malloc is running out of memory to allocate, like Emacs gives you.
1314 * The C library now contains the relocating allocator used in Emacs 19 for
1315 its editing buffers. This allocator (ralloc) minimizes allocation
1316 overhead and fragmentation by moving allocated regions around whenever it
1317 needs to. You always refer to a ralloc'd region with a "handle" (a
1318 pointer to a pointer--an object of type `void **').
1320 * There is a new `printf' format: `%m' gives you the string corresponding
1321 to the error code in `errno'.
1323 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
1324 or `%[' conversion, but instead of filling in a fixed-sized buffer you
1325 pass, the `a' modifier says to fill in a `char **' you pass with a
1326 malloc'd string.
1328 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
1329 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
1330 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
1332 * `mkstemp' is a traditional Unix function to atomically create and open a
1333 uniquely-named temporary file.
1334 \f
1335 Version 1.05
1337 * The standard location for the file that says what the local timezone is
1338 has changed again. It is now `/usr/local/etc/localtime' (or more
1339 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
1341 * The distribution no longer contains any files with names longer than 14
1342 characters.
1344 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
1345 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
1347 * New functions `ttyslot' and `syslog' from 4.4 BSD.
1348 \f
1349 Version 1.04
1351 * The configuration process has changed quite a bit. The `configure'
1352 script is now used just like the configuration scripts for other GNU
1353 packages. The `sysdeps' directory hierarchy is much rearranged.
1354 The file `INSTALL' explains the new scheme in detail.
1356 * The header files no longer need to be processed into ANSI C and
1357 traditional C versions. There is just one set of files to install, and
1358 it will work with ANSI or old C compilers (including `gcc -traditional').
1360 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
1361 MIPS DECStation running Ultrix 4.
1363 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
1364 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
1365 made itself into a shared library.
1367 * Yet further improved support for the i386, running 4.3 BSD-like systems
1368 (such as Mach 3 with the Unix single-server), or System V.
1370 * New function `strncasecmp' to do case-insensitive string comparison
1371 with limited length.
1373 * New function `strsep' is a reentrant alternative to `strtok'.
1375 * New functions `scandir' and `alphasort' for searching directories.
1377 * New function `setenv' is a better interface to `putenv'.
1379 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
1380 function for traversing a directory tree.
1382 * The GNU obstack package is now also part of the C library.
1383 The new function `open_obstack_stream' creates a stdio stream that
1384 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
1385 formatted output directly to an obstack.
1387 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
1388 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
1390 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
1392 * The new functions `strfry' and `memfrob' do mysterious and wonderful
1393 things to your strings.
1395 * There are some new test programs: test-fseek, testmb, and testrand.
1397 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
1398 These ports are not finished, but are a good starting place for really
1399 supporting those systems.
1401 * `/etc/localtime' is now the standard location for the file that says what
1402 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
1403 This follows the general principle that `/etc' is the place for all local
1404 configuration files.
1406 * The C library header files now use `extern "C"' when used by the C++
1407 compiler, so the C library should now work with C++ code.
1409 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
1410 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
1411 in <strings.h>.)
1413 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
1414 function which uses the `merge sort' algorithm, and is said to be
1415 significantly faster than the old GNU `qsort' function. Merge sort is
1416 now the standard `qsort' function. The new algorithm can require a lot
1417 of temporary storage; so, the old sorting function is called when the
1418 required storage is not available.
1420 * The C library now includes Michael Glad's Ultra Fast Crypt, which
1421 provides the Unix `crypt' function, plus some other entry points.
1423 * The code and header files taken from 4.4 BSD have been updated with the
1424 latest files released from Berkeley.
1425 \f
1426 ----------------------------------------------------------------------
1427 Copyright information:
1429 Copyright (C) 1992-1999,2000,2001,2002 Free Software Foundation, Inc.
1431 Permission is granted to anyone to make or distribute verbatim copies
1432 of this document as received, in any medium, provided that the
1433 copyright notice and this permission notice are preserved,
1434 thus giving the recipient permission to redistribute in turn.
1436 Permission is granted to distribute modified versions
1437 of this document, or of portions of it,
1438 under the above conditions, provided also that they
1439 carry prominent notices stating who last changed them.
1440 \f
1441 Local variables:
1442 version-control: never
1443 End: