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1 GNU C Library NEWS -- history of user-visible changes. 2004-6-18
2 Copyright (C) 1992-2002,2003,2004 Free Software Foundation, Inc.
3 See the end for copying conditions.
5 Please send GNU C library bug reports via <http://sources.redhat.com/bugzilla/>
6 using `glibc' in the "product" field.
7 \f
8 Version 2.3.3
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.
16 * getifaddrs now uses the netlink interface on Linux to get its information.
17 Implemented by Thorsten Kukuk.
19 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
20 Implemented by Ulrich Drepper.
22 * support for non-executable stacks on x86 has been added. Changes mostly
23 by Roland McGrath.
25 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
26 and Ulrich Drepper.
28 * getaddrinfo now performs destination address selection according to
29 RFC 3484.
30 \f
31 Version 2.3.2
33 * Thread-safe interfaces for many functions that access locale data
34 were added in version 2.3, but these features were omitted from NEWS.
35 Many functions have variants with an `_l' suffix that take a `locale_t'
36 object as a parameter rather than consulting the current locale.
37 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
38 create and maintain `locale_t' objects. Additionally, the new function
39 `uselocale' sets "the current locale" (as used by functions not so
40 parameterized) set for an individual thread. These features were added
41 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
43 * The functions getresuid, getresgid, setresuid, and setresgid, which
44 have long been available on Linux, are now declared in <unistd.h>
45 and are now also available on the Hurd.
47 * ELF thread-local storage support (TLS) now works on x86-64.
49 * The new dynamic string token $LIB is expanded in shared library names.
50 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
52 * Aldy Hernandez contributed complete software floating point support for
53 PowerPC machines with no FPU.
55 * fexecve is implemented on Linux.
57 * The `btowc' function should work at least twice as fast due to
58 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
60 * With approriate thread add-ons cancelable functions are now implemented
61 in libc.so as well. No need to call the function in libpthread. This
62 change allowed to finally disable the incorrect and expensive handling
63 of weak definition in ld.so.
65 * Yet more PLT entries in libc.so have been removed. We finally arrived
66 at the bare minimum. Startup times improved appropriately.
68 * Support for the new Linux/x86 system call interface was added. The
69 AT_SYSINFO auxiliary vector entry is recognized and handled.
70 \f
71 Version 2.3
73 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
74 charsets.
76 * iconv (the program and the interface) now accepts empty names (excluding
77 options like //TRANSLIT) to mean "use charset of current locale".
79 * localedef can now transliterate characters in strings which are not in
80 the provided charmap. The information from the input locale is used.
82 * Prelinking support was added for ELF targets. This requires additional
83 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
85 * Read-only stdio streams now use mmap to speed up operation by eliminating
86 copying and buffer underflows. To use add 'm' to the mode string of
87 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
89 * The malloc functions were completely rewritten by Wolfram Gloger based
90 on Doug Lea's malloc-2.7.0.c.
92 * Isamu Hasegawa contributed a completely new and POSIX-conformant
93 implementation of regex.
95 * Bruno Haible upgraded the iconv and locale implementation to support
96 Unicode 3.2.
98 * Contents of the LC_* and LANG environment variables in the CEN style are
99 not recognized anymore. It never was used. Change by Ulrich Drepper.
101 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
102 thread-local storage (TLS) ABI on some platforms.
103 Changes by Ulrich Drepper. SH support by Kaz Kojima.
105 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
106 EUC-JISX0213, and TSCII.
108 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
109 BSD-compatible interface for getting all network interface addresses.
110 Implementation for IPv4 by Roland McGrath.
112 * Loading of locale data is faster due to the introduction of a locale
113 archive. Implemented by Roland McGrath and Ulrich Drepper.
115 * Startup times are significantly reduced by not using exported functions
116 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
117 and Ulrich Drepper.
119 * Steven Munroe contributed a port to PowerPC64/Linux.
120 \f
121 Version 2.2.6
123 * The Hurd now uses the GNU libio implementation of stdio rather than the
124 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
126 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
127 with the same behavior as the Linux system call of the same name.
128 \f
129 Version 2.2.5
131 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
132 128-bit long double format.
134 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
135 IBM1161, and IBM1162 charsets.
137 * Andreas Jaeger contributed a port to x86-64/Linux.
139 * Peter Bruin contributed a port to PowerPC/Hurd.
141 * libc functions using I/O streams now can handle wide-oriented streams
142 as well.
144 * optimizations in the dynamic linker. Binaries created by recent binutils
145 versions start up quicker due to reduced time spent on relocations.
147 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
148 \f
149 Version 2.2.4
151 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
152 asinh, atanh, j0 for the 128-bit long double format.
154 * Bruno Haible updated all the code handling Unicode in some form to
155 support Unicode 3.1.
157 * Speed of regex for single-byte locales is back to previous levels.
158 Patch by Isamu Hasegawa.
160 * Alpha, SPARC, and IA-64 now also using floating stacks.
162 * Startup time of internationalized applications greatly improved through
163 iconv cache. Use iconvconfig to generate the cache file.
164 Contributed by Ulrich Drepper.
166 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
167 severe performance problems. Patch by David Mosberger.
169 * The Hurd port got a lot more functionality like AIO, various stdio
170 extensions, etc. Mainly done by Roland McGrath.
172 * mtrace can now lookup symbols in shared libraries.
173 \f
174 Version 2.2.3
176 * Intel's IA-64 math library is largely integrated. It provides fast and
177 accurate implementatations for most basic and standard math functions
178 in float, double, and long double format.
180 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
181 and asin for the 96-bit long double format and asin, log, tan for the
182 128-bit long double format.
184 * The beginning of a last-bit accurate math library by IBM Haifa were added.
185 The basic double functions exist today. Contributed by Abraham Ziv
186 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
187 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
189 * An asynchronous name lookup library was added. The interface is designed
190 after POSIX AIO. The proposal was circulated beforehand to get comments.
191 No negative ones came in. Implemented by Ulrich Drepper.
193 * Port to S390/64bit contributed by Martin Schwidefsky
194 <schwidefsky@de.ibm.com>.
196 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
197 of functions for Linux/IA-64.
199 * The RPC code is now thread safe. Threads can now use the same service
200 of different services at the same time. Patch by Eric Norum
201 <eric.norum@usask.ca> with some help by Ulrich Drepper.
203 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
204 family of functions for Linux/S390.
206 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
207 of functions for Linux/x86.
209 * Port to Linux/CRIS contributed by Axis Communications.
210 \f
211 Version 2.2.2
213 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
214 we can now check for namespace violations and missing declarations. The
215 result is that almost all headers are now Unix-compliant (as defined in
216 the upcoming XPG6). The negative side is that some programs might need
217 corrections, too, if they depend on the incorrect form of the headers in
218 previous versions which defined too many symbols and included too many
219 other headers.
221 * regex now handles multibyte character sets correctly.
222 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
224 * iconv (the program) does now conform to the upcoming XPG6 and handles
225 charmaps. Instead of the charset names the path of charmaps can be
226 provided and the conversion happens based on this data.
227 Contributed by Ulrich Drepper.
229 * The locale program now provides detailed information about the installed
230 locales. While
232 locale -a
234 only lists the names of the supported locales
236 locale -a --verbose
238 provides details such as country, language, and codeset name.
239 Contributed by Ulrich Drepper.
240 \f
241 Version 2.2.1
243 * The gencat program now parses the input file according to the charset
244 selected by the LC_CTYPE category. This is important for stateful
245 character sets. To make generating catalogs easier there is a way
246 to overwrite the charset selected by the locale: before the first
247 message or $ quote line the catalog can contain a line like
249 $ codeset=ISO-8859-2
251 to select the charset (ISO-8859-2 in this case).
253 Implemented by Shinya Hanataka and Ulrich Drepper.
255 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
256 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
257 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
259 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
260 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
262 * The LANGUAGE environment variable is now ignored unless the locale is
263 changed from the default "C" locale.
265 * The usual bug fixes.
266 \f
267 Version 2.2
269 * Greg McGary added runtime support for bounds checking using gcc's
270 new -fbounded-pointers option. ix86 target is complete. PowerPC
271 is in progress.
273 * Thorsten Kukuk added secure mode support to nscd.
275 * The Berkeley db libraries have been removed.
277 Related, the nss_db module is now in a separate package since it
278 obviously requires a database library being available.
280 * Wide character I/O streams implemented by Ulrich Drepper.
282 * Functions from the extended socket API added by Ulrich Drepper.
284 * Functions feenableexcept and fedisableexcept to control the
285 behaviour of individual exceptions have been added by Andreas Jaeger.
287 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
289 * The resolver code has been updated from bind 8.2.3-T5B which supports
290 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
291 and Mark Kettenis.
293 This change could in some situations effect backward compatibility. Since
294 now `_res' is a thread-local instead of a global variable, modifying it
295 in one thread does not have any effect in other threads.
297 The resolver library was also extended to allow IPv6 as the transport
298 protocol for the requests. This work was done by Stig Venaas.
300 * Compatibility code for K&R C compilers has been removed from the
301 header files. A ISO C compiler is needed to use the library
302 (conforming to either C89 or C99 standard).
304 * Complete rewrite of the localedef program to support multibyte character
305 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
306 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
307 Implemented by Ulrich Drepper.
309 Bruno Haible significantly improved the generation and use of the data
310 structures for the wide character tables.
312 * Plural handling in gettext implemented by Ulrich Drepper.
314 * The utmp daemon has been removed.
316 * The port to MIPS-Linux has been finished by Andreas Jaeger.
318 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
319 and Yutaka Niibe.
321 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
323 * POSIX barriers implemented by Kaz Kylheku.
325 * POSIX spawn function family implemented by Ulrich Drepper.
327 * POSIX spinlocks are now available.
329 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
331 * the configure option --enable-kernel=X.Y.Z allows to strip out
332 compatibility for kernel versions before X.Y.Z. This is currently only
333 implemented for Linux.
335 * the sockaddr_in6 structure changed. The IPv6 working group added a new
336 field sin6_scope_id. This means that all programs using IPv6 should be
337 recompiled. Don't expect binary compatibility with previous glibc
338 versions.
340 * various conversion modules for IBM character sets contributed by
341 Masahide Washizawa.
343 * IA-64 port by Jes Sorensen and HJ Lu.
345 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
346 Compiling the GNU C Library for Linux/ia64
347 ******************************************
349 Please refer to the file INSTALL in the same directory as you found
350 this file for general information about configuring and compiling
351 glibc.
353 For general inquiries about glibc under Linux/ia64 please use the
354 following mailing list linux-ia64@linuxia64.org or one of the relevant
355 glibc mailing lists.
357 Recommended Tools for Compilation
358 =================================
360 In order for glibc-2.2 to build correctly on the ia64 you need at
361 least the following versions of the GNU tools (the :
363 * The Cygnus toolchain snapshot for the ia64 as of August 4
364 including the provided set of patches. It is however recommend
365 you use the October 24 toolchain snapshot or a more recent version.
367 OR alternatively you can try the following (the Cygnus toolchain is
368 the recommended solution):
370 * GCC and binutils, GAS and GNU LD out of CVS from
371 sources.redhat.com as of August 28, 2000 or later. The CVS tree
372 may require special patches to work properly on the ia64.
374 Configuring and compiling GNU Libc for Linux/ia64
375 =================================================
377 The library requires Linux kernel version 2.4.0-test4-000728 or
378 later to funtion properly. Besides that it support for debug libraries
379 is currently untested. Hence the following options
380 are required for configuring the library:
382 --disable-debug --enable-kernel=2.4.0
384 It is also important that you make sure the library picks up the
385 appropriate kernel header files, if you do not have recent enough
386 kernel headers in /usr/src/linux/include, you should use the
387 --with-headers=<path> option to specify the location.
389 As an example I personally use the following options to configure
390 the library:
392 --disable-debug
393 --disable-cvs
394 --enable-kernel=2.4.0
395 --host=ia64-linux
396 --enable-add-ons=yes
397 --prefix=/usr
398 --with-headers=/home/jes/linux/include
401 Good luck
403 Jes Sorensen <jes@linuxcare.com>,
404 November 14th, 2000
405 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
406 \f
407 Version 2.1.3
409 * bug fixes
411 \f
412 Version 2.1.2
414 * bug fixes
416 \f
417 Version 2.1.1
419 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
421 * New xdr functions are added; some rpc functions are now 64bit clean.
423 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
425 * Fixed known incompatibilities with glibc 2.0.
427 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
429 * Optimized a number of functions (especially the ELF dynamic loader).
431 * Update timezone data files.
433 * lots of charmaps corrections
435 * some new locale definitions and charmaps
437 \f
438 Version 2.1
440 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
441 conform to POSIX member type requirements. Symbol versions have been
442 adjusted as needed within the library, and for direct use by applications,
443 but there is potential for problems if third-party libraries use
444 struct timeval as part of their interface. This does not present
445 a problem for X and other "essential" system libraries.
447 * An additional locale model to support C++ Standard Library locale
448 model and probably more was implemented by Ulrich Drepper.
450 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
451 symbol level.
453 * Miles Bader provided the `argp' function family to support hierachical
454 command line argument parsing, layered on top of getopt.
456 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
458 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
459 numbers.
461 * scanf recognizes the %a and %A format for scanning floating point numbers.
463 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
464 information and interfaces for the available integer types.
466 * about 130 new math functions were added to implement the ISO C9x math
467 library.
469 * the new header <complex.h> contains definitions of the complex math
470 functions from ISO C 9X.
472 * the new header <tgmath.h> defines generic macros to use complex or
473 real valued functions.
475 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
477 * Andreas Jaeger provided a test suite for the math library.
479 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
481 * Ulrich Drepper added character set conversion functions (iconv).
483 * Optimized string functions have been added.
485 * The localedata addon is now part of glibc.
487 * An implementation of profiling shared libraries was added by Ulrich Drepper.
489 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
490 daemon for NSS (nscd).
492 Missing a better place here are some numbers on improvements. Under
493 Linux 2.1.125 un-tar-ing the kernel sources takes
495 user system wall
497 using local files 12.19s 6.88s 22.91s
499 using NIS 13.92s 8.91s 26.34s
501 using NIS & nscd 10.37s 7.34s 25.30s
503 using NIS+ 27.57s 30.37s 640.46s
505 using NIS+ & nscd 10.25s 7.83s 26.51s
507 using NIS & old nscd [1] 13.83s 8.32s 29.60s
509 Keep in mind that non-namelookup related operations dominate above times.
510 It was just a common complain that using NIS+ unpacking the kernel is
511 horribly slow.
513 [1] The old nscd implementation is not available anymore since it was
514 distributed with glibc up to version 2.0.98 and thus is now replaced.
516 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
518 * Mark Kettenis provided a Hesiod NSS module.
520 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
521 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
523 * rcmd can now handle netgroups (Dick Streefland).
525 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
526 Bambrough.
528 * Support for the IPv6 protocol has been added to the socket API, as per the
529 latest draft standards.
531 * Support for Linux 2.2 has been added.
533 * Interface changes relative to the latest 2.0.x release:
534 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
535 addseverity NEW: Unix98
536 alphasort64 NEW: LFS
537 argp_err_exit_status NEW: argp, GNU ext
538 argp_error NEW: argp, GNU ext
539 argp_failure NEW: argp, GNU ext
540 argp_help NEW: argp, GNU ext
541 argp_parse NEW: argp, GNU ext
542 argp_program_bug_address NEW: argp, GNU ext
543 argp_program_version NEW: argp, GNU ext
544 argp_program_version_hook NEW: argp, GNU ext
545 argp_state_help NEW: argp, GNU ext
546 argp_usage NEW: argp, GNU ext
547 authdes_create NEW: Secure RPC
548 authdes_getucred NEW: Secure RPC
549 authdes_pk_create NEW: Secure RPC
550 backtrace NEW: GNU ext.
551 backtrace_symbols NEW: GNU ext.
552 backtrace_symbols_fd NEW: GNU ext.
553 cacos NEW: ISO C 9x
554 cacosf NEW: ISO C 9x
555 cacosh NEW: ISO C 9x
556 cacoshf NEW: ISO C 9x
557 cacoshl NEW: ISO C 9x
558 cacosl NEW: ISO C 9x
559 capget NEW: kernel
560 capset NEW: kernel
561 carg NEW: ISO C 9x
562 cargf NEW: ISO C 9x
563 cargl NEW: ISO C 9x
564 casin NEW: ISO C 9x
565 casinf NEW: ISO C 9x
566 casinh NEW: ISO C 9x
567 casinhf NEW: ISO C 9x
568 casinhl NEW: ISO C 9x
569 casinl NEW: ISO C 9x
570 catan NEW: ISO C 9x
571 catanf NEW: ISO C 9x
572 catanh NEW: ISO C 9x
573 catanhf NEW: ISO C 9x
574 catanhl NEW: ISO C 9x
575 catanl NEW: ISO C 9x
576 cbc_crypt NEW: Secure RPC
577 ccos NEW: ISO C 9x
578 ccosf NEW: ISO C 9x
579 ccosh NEW: ISO C 9x
580 ccoshf NEW: ISO C 9x
581 ccoshl NEW: ISO C 9x
582 ccosl NEW: ISO C 9x
583 cexp NEW: ISO C 9x
584 cexpf NEW: ISO C 9x
585 cexpl NEW: ISO C 9x
586 cimag NEW: ISO C 9x
587 cimagf NEW: ISO C 9x
588 cimagl NEW: ISO C 9x
589 clearerr_locked REMOVED
590 clntunix_create NEW: sunrpc ext
591 clog NEW: ISO C 9x
592 clog10 NEW: ISO C 9x
593 clog10f NEW: ISO C 9x
594 clog10l NEW: ISO C 9x
595 clogf NEW: ISO C 9x
596 clogl NEW: ISO C 9x
597 conj NEW: ISO C 9x
598 conjf NEW: ISO C 9x
599 conjl NEW: ISO C 9x
600 cpow NEW: ISO C 9x
601 cpowf NEW: ISO C 9x
602 cpowl NEW: ISO C 9x
603 cproj NEW: ISO C 9x
604 cprojf NEW: ISO C 9x
605 cprojl NEW: ISO C 9x
606 creal NEW: ISO C 9x
607 crealf NEW: ISO C 9x
608 creall NEW: ISO C 9x
609 creat64 NEW: LFS
610 csin NEW: ISO C 9x
611 csinf NEW: ISO C 9x
612 csinh NEW: ISO C 9x
613 csinhf NEW: ISO C 9x
614 csinhl NEW: ISO C 9x
615 csinl NEW: ISO C 9x
616 csqrt NEW: ISO C 9x
617 csqrtf NEW: ISO C 9x
618 csqrtl NEW: ISO C 9x
619 ctan NEW: ISO C 9x
620 ctanf NEW: ISO C 9x
621 ctanh NEW: ISO C 9x
622 ctanhf NEW: ISO C 9x
623 ctanhl NEW: ISO C 9x
624 ctanl NEW: ISO C 9x
625 des_setparity NEW: Secure RPC
626 ecb_crypt NEW: Secure RPC
627 endutxent NEW: Unix98
628 exp10 NEW: ISO C 9x
629 exp10f NEW: ISO C 9x
630 exp10l NEW: ISO C 9x
631 exp2 NEW: ISO C 9x
632 exp2f NEW: ISO C 9x
633 exp2l NEW: ISO C 9x
634 fattach NEW: STREAMS
635 fdetach NEW: STREAMS
636 fdim NEW: ISO C 9x
637 fdimf NEW: ISO C 9x
638 fdiml NEW: ISO C 9x
639 feclearexcept NEW: ISO C 9x
640 fegetenv NEW: ISO C 9x
641 fegetexceptflag NEW: ISO C 9x
642 fegetround NEW: ISO C 9x
643 feholdexcept NEW: ISO C 9x
644 feof_locked REMOVED
645 feraiseexcept NEW: ISO C 9x
646 ferror_locked REMOVED
647 fesetenv NEW: ISO C 9x
648 fesetexceptflag NEW: ISO C 9x
649 fesetround NEW: ISO C 9x
650 fetestexcept NEW: ISO C 9x
651 feupdateenv NEW: ISO C 9x
652 fflush_locked REMOVED
653 ffsl NEW: GNU ext.
654 ffsll NEW: GNU ext.
655 fgetpos64 NEW: LFS
656 fgets_unlocked NEW: GNU ext.
657 fileno_locked REMOVED
658 fma NEW: ISO C 9x
659 fmaf NEW: ISO C 9x
660 fmal NEW: ISO C 9x
661 fmax NEW: ISO C 9x
662 fmaxf NEW: ISO C 9x
663 fmaxl NEW: ISO C 9x
664 fmin NEW: ISO C 9x
665 fminf NEW: ISO C 9x
666 fminl NEW: ISO C 9x
667 fmtmsg NEW: Unix98
668 fopen64 NEW: LFS
669 fputc_locked REMOVED
670 fputs_unlocked NEW: GNU ext.
671 fread_unlocked NEW: GNU ext.
672 freopen64 NEW: LFS
673 fseeko NEW: Unix98
674 fsetpos64 NEW: LFS
675 fstatfs64 NEW: LFS
676 fstatvfs NEW: Unix98
677 fstatvfs64 NEW: LFS
678 ftello NEW: Unix98
679 ftello64 NEW: LFS
680 ftruncate64 NEW: LFS
681 ftw64 NEW: LFS
682 fwrite_unlocked NEW: GNU ext.
683 gai_strerror NEW: IPv6
684 gamma_r REMOVED
685 gammaf_r REMOVED
686 gammal_r REMOVED
687 getchar_locked REMOVED
688 getdate NEW: Unix98
689 getdate_err NEW: Unix98
690 getdate_r NEW: GNU ext.
691 getmsg NEW: STREAMS
692 getnameinfo NEW: IPv6
693 getnetname NEW: Secure RPC
694 getpmsg NEW: STREAMS
695 getpt NEW: Unix98 PTY
696 getrlimit64 NEW: LFS
697 getutxent NEW: Unix98
698 getutxid NEW: Unix98
699 getutxline NEW: Unix98
700 glob64 NEW: GNU ext.
701 globfree64 NEW: GNU ext.
702 gnu_get_libc_release NEW: GNU ext.
703 gnu_get_libc_version NEW: GNU ext.
704 grantpt NEW: Unix98 PTY
705 host2netname NEW: Secure RPC
706 iconv NEW: iconv
707 iconv_close NEW: iconv
708 iconv_open NEW: iconv
709 if_freenameindex NEW: IPv6
710 if_indextoname NEW: IPv6
711 if_nameindex NEW: IPv6
712 if_nametoindex NEW: IPv6
713 in6addr_any NEW: IPv6
714 in6addr_loopback NEW: IPv6
715 inet6_isipv4mapped NEW: IPv6
716 isastream NEW: STREAMS
717 iswblank NEW: GNU ext.
718 key_decryptsession NEW: Secure RPC
719 key_decryptsession_pk NEW: Secure RPC
720 key_encryptsession NEW: Secure RPC
721 key_encryptsession_pk NEW: Secure RPC
722 key_gendes NEW: Secure RPC
723 key_get_conv NEW: Secure RPC
724 key_secretkey_is_set NEW: Secure RPC
725 key_setnet NEW: Secure RPC
726 key_setsecret NEW: Secure RPC
727 llrint NEW: ISO C 9x
728 llrintf NEW: ISO C 9x
729 llrintl NEW: ISO C 9x
730 llround NEW: ISO C 9x
731 llroundf NEW: ISO C 9x
732 llroundl NEW: ISO C 9x
733 log2 NEW: ISO C 9x
734 log2f NEW: ISO C 9x
735 log2l NEW: ISO C 9x
736 lrint NEW: ISO C 9x
737 lrintf NEW: ISO C 9x
738 lrintl NEW: ISO C 9x
739 lround NEW: ISO C 9x
740 lroundf NEW: ISO C 9x
741 lroundl NEW: ISO C 9x
742 lseek64 NEW: LFS
743 makecontext NEW: Unix98
744 mempcpy NEW: GNU ext.
745 mmap64 NEW: LFS
746 moncontrol REMOVED
747 modify_ldt NEW: kernel
748 nan NEW: ISO C 9x
749 nanf NEW: ISO C 9x
750 nanl NEW: ISO C 9x
751 nearbyint NEW: ISO C 9x
752 nearbyintf NEW: ISO C 9x
753 nearbyintl NEW: ISO C 9x
754 netname2host NEW: Secure RPC
755 netname2user NEW: Secure RPC
756 nexttoward NEW: ISO C 9x
757 nexttowardf NEW: ISO C 9x
758 nexttowardl NEW: ISO C 9x
759 nftw NEW: Unix98
760 nftw64 NEW: LFS
761 open64 NEW: LFS
762 passwd2des NEW: Secure RPC
763 pow10 NEW: GNU ext.
764 pow10f NEW: GNU ext.
765 pow10l NEW: GNU ext.
766 pread NEW: Unix98
767 pread64 NEW: LFS
768 printf_size NEW: GNU ext.
769 printf_size_info NEW: GNU ext.
770 profil_counter REMOVED
771 pthread_mutexattr_getkind_np REPLACED
772 pthread_mutexattr_setkind_np REPLACED
773 ptsname NEW: Unix98 PTY
774 ptsname_r NEW: Unix98 PTY
775 putc_locked REMOVED
776 putchar_locked REMOVED
777 putgrent NEW: GNU ext.
778 putmsg NEW: STREAMS
779 putpmsg NEW: STREAMS
780 pututxline NEW: Unix98
781 pwrite NEW: Unix98
782 pwrite64 NEW: LFS
783 readdir64 NEW: LFS
784 readdir64_r NEW: LFS
785 remquo NEW: ISO C 9x
786 remquof NEW: ISO C 9x
787 remquol NEW: ISO C 9x
788 round NEW: ISO C 9x
789 roundf NEW: ISO C 9x
790 roundl NEW: ISO C 9x
791 rtime NEW: GNU ext.
792 scalbln NEW: ISO C 9x
793 scalblnf NEW: ISO C 9x
794 scalblnl NEW: ISO C 9x
795 scandir64 NEW: LFS
796 sendfile NEW: kernel
797 setcontext NEW: Unix98
798 setrlimit64 NEW: LFS
799 setutxent NEW: Unix98
800 sighold NEW: Unix98
801 sigignore NEW: Unix98
802 sigqueue NEW: POSIX.1b
803 sigrelse NEW: Unix98
804 sigset NEW: POSIX.1b
805 sigtimedwait NEW: POSIX.1b
806 sigwaitinfo NEW: POSIX.1b
807 sincos NEW: GNU ext.
808 sincosf NEW: GNU ext.
809 sincosl NEW: GNU ext.
810 statfs64 NEW: LFS
811 statvfs NEW: Unix98
812 statvfs64 NEW: LFS
813 strcasestr NEW: GNU ext.
814 strtoimax NEW: ISO C 9x
815 strtoumax NEW: ISO C 9x
816 strverscmp NEW: GNU ext.
817 svcauthdes_stats NEW: Secure RPC
818 svcunix_create NEW: sunrpc etx
819 svcunixfd_create NEW: sunrpc ext
820 swapcontext NEW: Unix98
821 tcgetsid NEW: Unix98 PTY
822 tdestroy NEW: GNU ext.
823 tgamma NEW: ISO C 9x
824 tgammaf NEW: ISO C 9x
825 tgammal NEW: ISO C 9x
826 tmpfile64 NEW: LFS
827 trunc NEW: ISO C 9x
828 truncate64 NEW: LFS
829 truncf NEW: ISO C 9x
830 truncl NEW: ISO C 9x
831 umount2 NEW: kernel
832 unlockpt NEW: Unix98 PTY
833 updwtmpx NEW: Unix98
834 user2netname NEW: Secure RPC
835 utmpxname NEW: Unix98
836 versionsort NEW: GNU ext.
837 versionsort64 NEW: GNU ext.
838 waitid NEW: Unix98
839 wcscasecmp NEW: GNU ext.
840 wcsncasecmp NEW: GNU ext.
841 wcsnlen NEW: GNU ext.
842 wcstoimax NEW: ISO C 9x
843 wcstoll NEW: ISO C 9x
844 wcstoull NEW: ISO C 9x
845 wcstoumax NEW: ISO C 9x
846 wcswcs NEW: Unix98
847 wordexp NEW: POSIX.2
848 wordfree NEW: POSIX.2
849 write_profiling REMOVED
850 xdecrypt NEW: Secure RPC
851 xdr_authdes_cred NEW: Secure RPC
852 xdr_authdes_verf NEW: Secure RPC
853 xdr_cryptkeyarg NEW: Secure RPC
854 xdr_cryptkeyarg2 NEW: Secure RPC
855 xdr_cryptkeyres NEW: Secure RPC
856 xdr_getcredres NEW: Secure RPC
857 xdr_key_netstarg NEW: Secure RPC
858 xdr_key_netstres NEW: Secure RPC
859 xdr_keybuf NEW: Secure RPC
860 xdr_keystatus NEW: Secure RPC
861 xdr_netnamestr NEW: Secure RPC
862 xdr_sizeof NEW: Secure RPC
863 xdr_unixcred NEW: sunrpc ext
864 xencrypt NEW: Secure RPC
865 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
866 \f
867 Version 2.0.6
869 * more bug fixes
871 \f
872 Version 2.0.5
874 * more bug fixes
876 * inet_ntoa is thread-safe
878 * updwtmp is moved from libutil to libc
880 * rewrite of cbrt function
882 * update of timezone data
883 \f
884 Version 2.0.4
886 * more bug fixes
887 \f
888 Version 2.0.3
890 * more bug fixes
891 \f
892 Version 2.0.2
894 * more bug fixes
896 * add atoll function
898 * fix complex problems in Berkeley DB code
900 * fix math functions
901 \f
902 Version 2.0.1
904 * fixed lots of header problems (especially Linux/GNU specific)
906 * dynamic loader preserves all registers
908 * Roland McGrath provided support for handling of auxiliary objects in
909 the ELF dynamic loader.
911 * support for parallel builds is improved
912 \f
913 Version 2.0
915 * GNU extensions are no longer declared by default. To enable them you
916 must define the macro `_GNU_SOURCE' in your program or compile with
917 `-D_GNU_SOURCE'.
919 * The library has changed from using GNU ld symbol aliases to using weak
920 symbols where available. The ELF object file format supports weak
921 symbols; GNU ld also supports weak symbols in the a.out format. (There
922 is also now support for other GNU ld extensions in ELF. Use the
923 `--with-elf' option to configure to indicate you have ELF, and
924 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
925 of many files which contained only symbol aliases, reducing the size of
926 the source and the compiled library; many other files were renamed to
927 less cryptic names previously occupied by the symbol alias files.
928 There is a new header file <elf.h> for programs which operate on
929 files in the ELF format.
931 * Converted to Autoconf version 2, so `configure' has more options.
932 Run `configure --help' to see the details.
934 * The library can now be configured to build profiling, highly-optimized
935 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
936 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
937 `configure' enable building these extra libraries. The shared library is
938 built by default when using both ELF and GNU ld. When shared libraries
939 are enabled, the new library `-ldl' is available for arbitrary run-time
940 loading of shared objects; its interface is defined in <dlfcn.h>. The
941 new header file <link.h> gives access to the internals of the run-time
942 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
943 application of same name on other systems and it provides information
944 about dynamically linked binaries.
946 * The C library now provides the run-time support code for profiling
947 executables compiled with `-pg'. Programs can control the profiling code
948 through the interface in <sys/gmon.h>. The `gmon.out' files written by
949 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
950 the support for this file format was contributed by David Mosberger-Tang.
952 * The math code has been replaced with a math library based on fdlibm from
953 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
954 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
955 functions. The math functions now reside in a separate library, so
956 programs using them will need to use `-lm' their linking commands.
958 * John C. Bowman contributed optimized ix87 assembler inline functions.
960 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
961 mechanism similar to that found in Solaris 2. This is now used for the
962 group, passwd, hosts, networks, services, protocols, rpc, ethers,
963 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
964 file controls what services are used for each individual database. This
965 works by loading shared libraries with names specified in `nsswitch.conf',
966 so service modules can be changed or added at any time without even
967 relinking any program. Currently there are the file, db, and NIS based
968 NSS services available.
970 * The new functions `strtoq' and `strtouq' parse integer values from
971 strings, like `strtol' and `strtoul', but they return `long long int' and
972 `unsigned long long int' values, respectively (64-bit quantities).
974 * The new functions `strtof' and `strtold' parse floating-point values from
975 strings, like `strtod', but they return `float' and `long double' values,
976 respectively (on some machines `double' and `long double' are the same).
978 * Ulrich Drepper has contributed new implementations of the floating-point
979 printing and reading code used in the `printf' family of functions and
980 `strtod', `strtof', and `strtold'. These new functions are perfectly
981 accurate, and much faster than the old ones.
983 * The implementation of the POSIX locale model was completely rewritten by
984 Ulrich Drepper. This includes the new programs `localedef' and `locale'
985 to compile the POSIX locale definition.
987 * The former dummy implementations of the strcoll and strxfrm function are
988 now replaced by fully functional code contributed by Ulrich Drepper. The
989 collation information comes from the POSIX locale definitions.
991 * The new header <langinfo.h> defines an interface for accessing
992 various locale-dependent data (using the locale chosen with `setlocale').
994 * Ulrich Drepper has contributed a new suite of functions for operation on
995 wide-character and multibyte-character strings, in <wchar.h>;
996 and classification and case conversion of wide characters, in <wctype.h>.
997 These new functions are conforming to the ISO C, Amendement 1 specification.
999 * There is now a second implementation of the standard I/O library available.
1000 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1001 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1003 * You can now use positional parameter specifications in format strings
1004 for the `printf' and `scanf' families of functions. For example,
1005 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1006 ``Number 6, Mr Jones''. This is mainly useful when providing different
1007 format strings for different languages, whose grammars may dictate
1008 different orderings of the values being printed. To support this
1009 feature, the interface for `register_printf_handler' has changed; see
1010 the header file <printf.h> for details.
1012 * The `printf' and `scanf' families of functions now understand a new
1013 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1014 to group numbers as indicated by the locale; for `scanf' and friends, this
1015 says to accept as valid only a number with all the proper grouping
1016 separators in the right places. In the default "C" locale, numbers are
1017 not grouped; but locales for specific countries will define the usual
1018 conventions (i.e. separate thousands with `,' in the US locale).
1020 * The pgrp functions have been regularized, slightly incompatibly but much
1021 less confusingly. The core functions are now `getpgid' and `setpgid',
1022 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1023 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1024 provided for compatibility. There is no longer an incompatible `getpgrp'
1025 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1027 * The new header file <fts.h> and suite of functions simplify programs that
1028 operate on directory trees. This code comes from 4.4 BSD.
1030 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1031 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1032 NSS scheme used in glibc.
1034 * There is a new malloc debugging hook `__memalign_hook'.
1036 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1037 `unsigned int' in <sys/types.h>. These are for compatibility only and
1038 their use is discouraged.
1040 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1041 done differently, so that it works even without GNU ld.
1043 * New function `euidaccess' checks allowed access to a file like `access',
1044 but using the effective IDs instead of the real IDs.
1046 * The time zone data files have been updated for the latest and greatest
1047 local time conventions of the countries of the world.
1049 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1050 see <dirent.h>.
1052 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1053 for formatting floating-point numbers. They are provided only for
1054 compatibility; new programs should use `sprintf' instead. There are
1055 also equivalent function for the `long double' floating-point type and
1056 all functions also exist in a reentrant form.
1058 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1059 functions for maintaining the login-record files (primarily of use to
1060 system programs such as `login'), and convenient functions for
1061 allocating and initializing a pseudo-terminal (pty) device.
1063 * Ulrich Drepper has contributed new support for System V style
1064 shared memory and IPC on systems that support it.
1066 * Ulrich Drepper has contributed several miscellaneous new functions found
1067 in System V: The `hsearch' family of functions provide an effective
1068 implementation of hash tables; `a64l' and `l64a' provide a very simple
1069 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1070 number generator.
1072 * Ulrich Drepper has contributed new reentrant counterparts for the
1073 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1075 * Ulrich Drepper has contributed new, highly-optimized versions of several
1076 string functions for the i486/Pentium family of processors.
1078 * Ulrich Drepper has updated the Linux-specific code, based largely
1079 on work done in Hongjiu Lu's version of GNU libc for Linux.
1080 The GNU library now supports Linux versions 2.0.10 and later,
1081 using the ELF object file format (i[3456]86-*-linux).
1083 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1085 * David Mosberger-Tang and Richard Henderson have ported the C library
1086 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1087 dynamic linking support for ELF/Alpha.
1089 * Richard Henderson contributed several Alpha optimized assembler function
1090 for arithmetic and string handling.
1092 * Ulrich Drepper has contributed a new set of message catalog functions to
1093 support multiple languages using the <libintl.h> interface, for use with
1094 his new package GNU gettext. Translation volunteers have contributed
1095 catalogs of the library's messages in Spanish, German, and Korean.
1097 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1098 program and the `catgets' function for reading the catalog files it
1099 creates. (The <libintl.h> interface is preferred; we include the
1100 <nl_types.h> interface using `catgets' only for source compatibility with
1101 programs already written to use it.)
1103 * New header file <values.h> gives SVID-compatible names for <limits.h>
1104 constants.
1106 * Various new macros, declarations, and small header files for compatibility
1107 with 4.4 BSD.
1109 * New function `group_member' is a convenient way to check if a process has
1110 a given effective group ID.
1112 * When using GCC 2.7 and later, the socket functions are now declared in a
1113 special way so that passing an argument of type `struct sockaddr_in *',
1114 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1115 `struct sockaddr *' type, does not generate a type-clash warning.
1117 * New function `error' declared in header file <error.h> is a convenient
1118 function for printing error messages and optionally exiting; this is the
1119 canonical function used in GNU programs. The new functions `err', `warn',
1120 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1121 doing the same thing.
1123 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1124 POSIX.2 `glob' function to do ~ and {...} expansion.
1126 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1127 `clearenv' which is used in POSIX.9 is also available.
1129 * New function `getsid' returns session ID number on systems that support it.
1131 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1132 files <db.h> and <mpool.h> provide a rich set of functions for several
1133 types of simple databases stored in memory and in files, and <ndbm.h> is
1134 an old `ndbm'-compatible interface using the `db' functions. Link with
1135 `-ldb' to get these functions.
1137 * New macro `strdupa' copies a string like `strdup', but uses local stack
1138 space from `alloca' instead of dynamic heap space from `malloc'.
1140 * New function `strnlen' is like `strlen' but searches only a given maximum
1141 number of characters for the null terminator. `stpncpy', `strndup' and
1142 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1143 function.
1145 * New function `statfs' in header <sys/statfs.h>.
1147 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1148 provide convenient functions for operating on blocks of null-terminated
1149 strings.
1151 * A new suite of functions in <utmp.h> handle all the details of reading
1152 and writing the utmp file.
1154 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1155 Thorsten Kukuk.
1157 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1158 completely POSIX compliant and also implemented the extended functionality
1159 to handle alternate digit representation and alternate era date formats.
1161 * Ulrich Drepper provided an implementation of the `strptime' function
1162 defined in XPG4.2 which transforms a string into a `struct tm' value.
1164 * Paul Eggert provided the tzselect shell script as part of the timezone
1165 code. The shell script makes it easy to select the correct timezone
1166 specification.
1168 * The implementation of the malloc family of functions is completely replaced
1169 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1170 The implementation uses the mmap function (if available) and it is
1171 optimized for the use in multi threaded programs.
1173 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1174 functions. This new functionality is usable by specifying a special
1175 salt string and it is compatible with implementation on *BSD systems.
1177 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1178 `getsubopt' to handle second level command line options, `bsd_signal'
1179 to access BSD style `signal' functionality, the obsolete `regexp' style
1180 expression matcher.
1182 * the `lchown' function is available on system which support this
1183 functionality.
1185 * The implementation of the shadow password handling function was contributed
1186 by Ulrich Drepper.
1188 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1190 * POSIX.1g support was added. The <sys/select.h> header is available,
1191 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1192 implementation of `getaddrinfo'.
1193 \f
1194 Version 1.09
1196 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1198 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1199 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1201 * The new function `daemon' from 4.4 BSD is useful for server programs that
1202 want to put themselves in the background.
1204 * Joel Sherrill has contributed support for several standalone boards that
1205 run without an operating system.
1207 * `printf', `scanf' and friends now accept a `q' type modifier for long
1208 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1210 * All of the code taken from BSD (notably most of the math and networking
1211 routines) has been updated from the BSD 4.4-Lite release.
1213 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1215 * The new functions `getdomainname' and `setdomainname' fetch or change the
1216 YP/NIS domain name. These are system calls which exist on systems which
1217 have YP (aka NIS).
1219 * The time zone data files have been updated for the latest international
1220 conventions.
1222 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1223 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1224 \f
1225 Version 1.08
1227 * The C library now includes support for Sun RPC, from Sun's free
1228 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1229 are included. (There is still no support for YP.)
1231 * Tom Quinn has contributed a port of the C library to SGI machines running
1232 Irix 4 (mips-sgi-irix4).
1234 * The new `lockf' function is a simplified interface to the locking
1235 facilities of `fcntl', included for compatibility.
1237 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1239 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1241 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1242 compatibility.
1244 * The error message printed by `assert' for a failed assertion now includes
1245 the name of the program (if using GNU ld) and the name of the calling
1246 function (with versions of GCC that support this).
1248 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1250 * The library now includes the <sys/mman.h> header file and memory
1251 management functions `mmap', `munmap', `mprotect', `msync', and
1252 `madvise', on systems that support those facilities.
1254 * The interface for `mcheck' has changed slightly: the function called to
1255 abort the program when an allocation inconsistency is detected now takes
1256 an argument that indicates the type of failure. The new function
1257 `mprobe' lets you request a consistency check for a particular block at
1258 any time (checks are normally done only when you call `free' or `realloc'
1259 on a block).
1261 * It is now possible to easily cross-compile the C library, building on one
1262 system a library to run on another machine and/or operating system. All
1263 you need to do is set the variable `HOST_CC' in `configparms' to the
1264 native compiler for programs to run on the machine you are building on (a
1265 few generator programs are used on Unix systems); set `CC' to the
1266 cross-compiler.
1268 * The new function `fexecve' (only implemented on the GNU system) executes
1269 a program file given a file descriptor already open on the file.
1270 \f
1271 Version 1.07
1273 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1274 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1276 * You can set the variable `libprefix' in `configparms' to specify a prefix
1277 to be prepended to installed library files; this makes it easy to install
1278 the GNU C library to be linked as `-lgnuc' or whatever.
1280 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1281 copies a limited number of characters from a string, and returns the
1282 address of the last character written.
1284 * You no longer need to check for whether the installed `stddef.h' is
1285 compatible with the GNU C library. configure now checks for you.
1287 * You can now define a per-stream `fileno' function to convert the
1288 stream's cookie into an integral file descriptor.
1290 * ``malloc (0)'' no longer returns a null pointer. Instead, it
1291 allocates zero bytes of storage, and returns a unique pointer which
1292 you can pass to `realloc' or `free'. The behavior is undefined if
1293 you dereference this pointer.
1295 * The C library now runs on Sony NEWS m68k machines running either
1296 NewsOS 3 or NewsOS 4.
1298 * The new `syscall' function is a system-dependent primitive function
1299 for invoking system calls. It has the canonical behavior on Unix
1300 systems, including unreliable return values for some calls (such as
1301 `pipe', `fork' and `getppid').
1303 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
1304 to `EAGAIN', which is the preferred name. On systems whose kernels
1305 use two distinct codes, the C library now translates EWOULDBLOCK to
1306 EAGAIN in every system call function.
1307 \f
1308 Version 1.06
1310 * The GNU C Library Reference Manual is now distributed with the library.
1311 `make dvi' will produce a DVI file of the printed manual.
1312 `make info' will produce Info files that you can read on line using C-h i
1313 in Emacs or the `info' program.
1314 Please send comments on the manual to bug-glibc-manual@gnu.org.
1316 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
1318 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
1320 * Jason Merrill has contributed a port to the Sequent Symmetry running
1321 Dynix version 3 (i386-sequent-dynix).
1323 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
1324 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
1326 * New function `memory_warnings' lets you arrange to get warnings when
1327 malloc is running out of memory to allocate, like Emacs gives you.
1329 * The C library now contains the relocating allocator used in Emacs 19 for
1330 its editing buffers. This allocator (ralloc) minimizes allocation
1331 overhead and fragmentation by moving allocated regions around whenever it
1332 needs to. You always refer to a ralloc'd region with a "handle" (a
1333 pointer to a pointer--an object of type `void **').
1335 * There is a new `printf' format: `%m' gives you the string corresponding
1336 to the error code in `errno'.
1338 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
1339 or `%[' conversion, but instead of filling in a fixed-sized buffer you
1340 pass, the `a' modifier says to fill in a `char **' you pass with a
1341 malloc'd string.
1343 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
1344 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
1345 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
1347 * `mkstemp' is a traditional Unix function to atomically create and open a
1348 uniquely-named temporary file.
1349 \f
1350 Version 1.05
1352 * The standard location for the file that says what the local timezone is
1353 has changed again. It is now `/usr/local/etc/localtime' (or more
1354 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
1356 * The distribution no longer contains any files with names longer than 14
1357 characters.
1359 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
1360 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
1362 * New functions `ttyslot' and `syslog' from 4.4 BSD.
1363 \f
1364 Version 1.04
1366 * The configuration process has changed quite a bit. The `configure'
1367 script is now used just like the configuration scripts for other GNU
1368 packages. The `sysdeps' directory hierarchy is much rearranged.
1369 The file `INSTALL' explains the new scheme in detail.
1371 * The header files no longer need to be processed into ANSI C and
1372 traditional C versions. There is just one set of files to install, and
1373 it will work with ANSI or old C compilers (including `gcc -traditional').
1375 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
1376 MIPS DECStation running Ultrix 4.
1378 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
1379 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
1380 made itself into a shared library.
1382 * Yet further improved support for the i386, running 4.3 BSD-like systems
1383 (such as Mach 3 with the Unix single-server), or System V.
1385 * New function `strncasecmp' to do case-insensitive string comparison
1386 with limited length.
1388 * New function `strsep' is a reentrant alternative to `strtok'.
1390 * New functions `scandir' and `alphasort' for searching directories.
1392 * New function `setenv' is a better interface to `putenv'.
1394 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
1395 function for traversing a directory tree.
1397 * The GNU obstack package is now also part of the C library.
1398 The new function `open_obstack_stream' creates a stdio stream that
1399 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
1400 formatted output directly to an obstack.
1402 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
1403 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
1405 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
1407 * The new functions `strfry' and `memfrob' do mysterious and wonderful
1408 things to your strings.
1410 * There are some new test programs: test-fseek, testmb, and testrand.
1412 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
1413 These ports are not finished, but are a good starting place for really
1414 supporting those systems.
1416 * `/etc/localtime' is now the standard location for the file that says what
1417 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
1418 This follows the general principle that `/etc' is the place for all local
1419 configuration files.
1421 * The C library header files now use `extern "C"' when used by the C++
1422 compiler, so the C library should now work with C++ code.
1424 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
1425 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
1426 in <strings.h>.)
1428 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
1429 function which uses the `merge sort' algorithm, and is said to be
1430 significantly faster than the old GNU `qsort' function. Merge sort is
1431 now the standard `qsort' function. The new algorithm can require a lot
1432 of temporary storage; so, the old sorting function is called when the
1433 required storage is not available.
1435 * The C library now includes Michael Glad's Ultra Fast Crypt, which
1436 provides the Unix `crypt' function, plus some other entry points.
1438 * The code and header files taken from 4.4 BSD have been updated with the
1439 latest files released from Berkeley.
1440 \f
1441 ----------------------------------------------------------------------
1442 Copyright information:
1444 Copyright (C) 1992-1999,2000,2001,2002 Free Software Foundation, Inc.
1446 Permission is granted to anyone to make or distribute verbatim copies
1447 of this document as received, in any medium, provided that the
1448 copyright notice and this permission notice are preserved,
1449 thus giving the recipient permission to redistribute in turn.
1451 Permission is granted to distribute modified versions
1452 of this document, or of portions of it,
1453 under the above conditions, provided also that they
1454 carry prominent notices stating who last changed them.
1455 \f
1456 Local variables:
1457 version-control: never
1458 End: