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1 GNU C Library NEWS -- history of user-visible changes. 2008-5-14
2 Copyright (C) 1992-2007, 2008 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 2.9
10 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
11 up at the same time. Implemented by Ulrich Drepper.
13 * TLS descriptors for LD and GD on x86 and x86-64.
14 Implemented by Alexandre Oliva.
16 * getaddrinfo now handles DCCP and UDPlite.
17 Implemented by Ulrich Drepper.
19 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
20 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
21 Implemented by Ulrich Drepper.
23 * New implementation of memmem, strstr, and strcasestr which is O(n).
24 Implemented by Eric Blake.
25 \f
26 Version 2.8
28 * New locales: bo_CN, bo_IN.
30 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
32 * Sorting rules for some Indian languages (Devanagari and Gujarati).
33 Implemented by Pravin Satpute.
35 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
37 * nscd caches now all timeouts for DNS entries
38 Implemented by Ulrich Drepper.
40 * nscd is more efficient and wakes up less often.
41 Implemented by Ulrich Drepper.
43 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
44 vdprintf, and obstack_vprintf.
45 Implemented by Jakub Jelinek.
47 * Faster memset for x86-64.
48 Implemented by Harsha Jagasia and H.J. Lu.
50 * Faster memcpy on x86.
51 Implemented by Ulrich Drepper.
53 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
54 Implemented by Ulrich Drepper.
56 * Faster sqrt and sqrtf implemention for some PPC variants.
57 Implemented by Stephen Munroe.
58 \f
59 Version 2.7
61 * More checking functions: fread, fread_unlocked, open*, mq_open.
62 Implemented by Jakub Jelinek and Ulrich Drepper.
64 * Extend fortification to C++. Implemented by Jakub Jelinek.
66 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
67 by not recognizing 'a' as a modifier when those specs are requested.
68 Implemented by Jakub Jelinek.
70 * PPC optimizations to math and string functions.
71 Implemented by Steven Munroe.
73 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
74 options to be passed. Implemented by Ulrich Drepper.
76 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
78 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
79 Implemented by Ulrich Drepper.
81 * Handle private futexes in the NPTL implementation.
82 Implemented by Jakub Jelinek and Ulrich Drepper.
84 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
85 Implemented by Roland McGrath and Ulrich Drepper.
87 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
89 * SHA-256 and SHA-512 based password encryption.
90 Implemented by Ulrich Drepper.
92 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
93 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
94 yo_NG.
96 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
97 Implemented by Ulrich Drepper.
98 \f
99 Version 2.6
101 * New Linux interfaces: epoll_pwait, sched_getcpu.
103 * New generic interfaces: strerror_l.
105 * nscd can now cache the services database. Implemented by Ulrich Drepper.
107 \f
108 Version 2.5
110 * For Linux, the sorting of addresses returned by getaddrinfo now also
111 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
112 Implemented by Ulrich Drepper.
114 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
115 Implemented by Ulrich Drepper.
117 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
119 * New iconv module for MIK. Contributed by Alexander Shopov.
121 * For sites with broken group and/or passwd database, the auto-propagate
122 option of nscd can prevent creating ID lookup entries from the results
123 of a name lookup and vice versa. This usually is no problem but some
124 site might have problems with the default behavior.
125 Implemented by Ulrich Drepper.
127 * Iterating over entire database in NIS can be slow. With the
128 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
129 to trade time for memory. The entire database will be read at once.
130 Implemented by Ulrich Drepper.
132 * The interfaces introduced in RFC 3542 have been implemented by
133 Ulrich Drepper.
135 * Support for the new ELF hash table format was added by Ulrich Drepper.
137 * Support for priority inheritance mutexes added by Jakub Jelinek and
138 Ulrich Drepper.
140 * Support for priority protected mutexes added by Jakub Jelinek.
142 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
143 or_IN, csb_PL, fy_NL, sr_ME.
144 \f
145 Version 2.4
147 * More overflow detection functions.
149 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
150 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
152 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
153 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
154 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
155 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
156 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
157 by Masahide Washizawa.
159 * It is now possible to install audit libraries for the dynamic linker using
160 LD_AUDIT. Implemented by Ulrich Drepper.
162 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
163 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
164 For a libc and libpthread that works well on Linux 2.4 kernels, we
165 recommend using the stable 2.3 branch.
167 * The new function open_wmemstream acts like open_memstream,
168 but uses a wchar_t wide character buffer.
170 * The new function ppoll is an improved version of poll, similar to pselect.
172 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
173 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
174 renameat, unlinkat, linkat, symlinkat, readlinkat.
176 * New Linux kernel system calls: unshare,
177 inotify_init, inotify_add_watch, inotify_rm_watch.
179 * The euidaccess function is now also known by the alias eaccess,
180 for compatibility with some other systems.
182 * Timezone data updated to 2006b version.
183 \f
184 Version 2.3.6
186 * The following bugs are resolved with this release:
188 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
189 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
190 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
191 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
192 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
193 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
195 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
197 * As of this release, GCC 4 can be used to compile the C Library.
199 * Timezone data updated to 2005m version.
200 \f
201 Version 2.3.5
203 * The following bugs are resolved with this release:
205 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
206 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
207 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
208 777, 787, 821, 822, 823, 825
210 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
211 \f
212 Version 2.3.4
214 * Support for RFC 3678. Real implementations exist only for Linux so far.
215 Implemented by Ulrich Drepper.
217 * nscd can now cache entries persistently. Expiring entries are reloaded.
218 For speedups the cache can be shared in memory with client processes.
219 Implemented by Ulrich Drepper.
221 * nscd can now perform SELinux checks.
222 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
224 * getaddrinfo queries are now cached. Canonical name lookup is performed
225 efficiently.
226 Implemented by Ulrich Drepper.
228 * The nothrow function attribute is used when headers are used by gcc when
229 compiling C code. This can avoid significant amounts of exception
230 handling data.
232 * The malloc functions perform more error checking and are stricter when
233 it comes to reacting on errors. The default action is to terminate
234 the process after showing an error message. Implemented by Ulrich Drepper.
236 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
237 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
239 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
240 namespaces using the new function dlmopen(). This feature is of course,
241 like most other dynamic loading functionality, not available in statically
242 linked applications. Implemented by Ulrich Drepper.
244 * Low-overhead boundary checking variants of string and some stdio functions
245 were added. These are to be used in conjunction with a gcc patch by
246 Jakub Jelinek which adds calls to these functions if possible.
247 Implemented by Jakub Jelinek and Ulrich Drepper.
249 * Old code for several operating systems and machine architectures that
250 have not been in working condition in a long time have been removed from
251 the main source tree maintained by the GNU C Library's maintainers.
252 These files are now reside in the separate `ports' source module
253 that is usable as an add-on when building the library.
254 \f
255 Version 2.3.3
257 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
258 interrogate the dynamic linker, compatible with the Solaris interface.
260 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
261 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
263 * getifaddrs now uses the netlink interface on Linux to get its information.
264 Implemented by Thorsten Kukuk.
266 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
267 Implemented by Ulrich Drepper.
269 * support for non-executable stacks on x86 has been added. Changes mostly
270 by Roland McGrath.
272 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
273 and Ulrich Drepper.
275 * getaddrinfo now performs destination address selection according to
276 RFC 3484.
277 \f
278 Version 2.3.2
280 * Thread-safe interfaces for many functions that access locale data
281 were added in version 2.3, but these features were omitted from NEWS.
282 Many functions have variants with an `_l' suffix that take a `locale_t'
283 object as a parameter rather than consulting the current locale.
284 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
285 create and maintain `locale_t' objects. Additionally, the new function
286 `uselocale' sets "the current locale" (as used by functions not so
287 parameterized) set for an individual thread. These features were added
288 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
290 * The functions getresuid, getresgid, setresuid, and setresgid, which
291 have long been available on Linux, are now declared in <unistd.h>
292 and are now also available on the Hurd.
294 * ELF thread-local storage support (TLS) now works on x86-64.
296 * The new dynamic string token $LIB is expanded in shared library names.
297 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
299 * Aldy Hernandez contributed complete software floating point support for
300 PowerPC machines with no FPU.
302 * fexecve is implemented on Linux.
304 * The `btowc' function should work at least twice as fast due to
305 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
307 * With approriate thread add-ons cancelable functions are now implemented
308 in libc.so as well. No need to call the function in libpthread. This
309 change allowed to finally disable the incorrect and expensive handling
310 of weak definition in ld.so.
312 * Yet more PLT entries in libc.so have been removed. We finally arrived
313 at the bare minimum. Startup times improved appropriately.
315 * Support for the new Linux/x86 system call interface was added. The
316 AT_SYSINFO auxiliary vector entry is recognized and handled.
317 \f
318 Version 2.3
320 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
321 charsets.
323 * iconv (the program and the interface) now accepts empty names (excluding
324 options like //TRANSLIT) to mean "use charset of current locale".
326 * localedef can now transliterate characters in strings which are not in
327 the provided charmap. The information from the input locale is used.
329 * Prelinking support was added for ELF targets. This requires additional
330 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
332 * Read-only stdio streams now use mmap to speed up operation by eliminating
333 copying and buffer underflows. To use add 'm' to the mode string of
334 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
336 * The malloc functions were completely rewritten by Wolfram Gloger based
337 on Doug Lea's malloc-2.7.0.c.
339 * Isamu Hasegawa contributed a completely new and POSIX-conformant
340 implementation of regex.
342 * Bruno Haible upgraded the iconv and locale implementation to support
343 Unicode 3.2.
345 * Contents of the LC_* and LANG environment variables in the CEN style are
346 not recognized anymore. It never was used. Change by Ulrich Drepper.
348 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
349 thread-local storage (TLS) ABI on some platforms.
350 Changes by Ulrich Drepper. SH support by Kaz Kojima.
352 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
353 EUC-JISX0213, and TSCII.
355 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
356 BSD-compatible interface for getting all network interface addresses.
357 Implementation for IPv4 by Roland McGrath.
359 * Loading of locale data is faster due to the introduction of a locale
360 archive. Implemented by Roland McGrath and Ulrich Drepper.
362 * Startup times are significantly reduced by not using exported functions
363 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
364 and Ulrich Drepper.
366 * Steven Munroe contributed a port to PowerPC64/Linux.
367 \f
368 Version 2.2.6
370 * The Hurd now uses the GNU libio implementation of stdio rather than the
371 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
373 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
374 with the same behavior as the Linux system call of the same name.
375 \f
376 Version 2.2.5
378 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
379 128-bit long double format.
381 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
382 IBM1161, and IBM1162 charsets.
384 * Andreas Jaeger contributed a port to x86-64/Linux.
386 * Peter Bruin contributed a port to PowerPC/Hurd.
388 * libc functions using I/O streams now can handle wide-oriented streams
389 as well.
391 * optimizations in the dynamic linker. Binaries created by recent binutils
392 versions start up quicker due to reduced time spent on relocations.
394 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
395 \f
396 Version 2.2.4
398 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
399 asinh, atanh, j0 for the 128-bit long double format.
401 * Bruno Haible updated all the code handling Unicode in some form to
402 support Unicode 3.1.
404 * Speed of regex for single-byte locales is back to previous levels.
405 Patch by Isamu Hasegawa.
407 * Alpha, SPARC, and IA-64 now also using floating stacks.
409 * Startup time of internationalized applications greatly improved through
410 iconv cache. Use iconvconfig to generate the cache file.
411 Contributed by Ulrich Drepper.
413 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
414 severe performance problems. Patch by David Mosberger.
416 * The Hurd port got a lot more functionality like AIO, various stdio
417 extensions, etc. Mainly done by Roland McGrath.
419 * mtrace can now lookup symbols in shared libraries.
420 \f
421 Version 2.2.3
423 * Intel's IA-64 math library is largely integrated. It provides fast and
424 accurate implementatations for most basic and standard math functions
425 in float, double, and long double format.
427 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
428 and asin for the 96-bit long double format and asin, log, tan for the
429 128-bit long double format.
431 * The beginning of a last-bit accurate math library by IBM Haifa were added.
432 The basic double functions exist today. Contributed by Abraham Ziv
433 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
434 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
436 * An asynchronous name lookup library was added. The interface is designed
437 after POSIX AIO. The proposal was circulated beforehand to get comments.
438 No negative ones came in. Implemented by Ulrich Drepper.
440 * Port to S390/64bit contributed by Martin Schwidefsky
441 <schwidefsky@de.ibm.com>.
443 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
444 of functions for Linux/IA-64.
446 * The RPC code is now thread safe. Threads can now use the same service
447 of different services at the same time. Patch by Eric Norum
448 <eric.norum@usask.ca> with some help by Ulrich Drepper.
450 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
451 family of functions for Linux/S390.
453 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
454 of functions for Linux/x86.
456 * Port to Linux/CRIS contributed by Axis Communications.
457 \f
458 Version 2.2.2
460 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
461 we can now check for namespace violations and missing declarations. The
462 result is that almost all headers are now Unix-compliant (as defined in
463 the upcoming XPG6). The negative side is that some programs might need
464 corrections, too, if they depend on the incorrect form of the headers in
465 previous versions which defined too many symbols and included too many
466 other headers.
468 * regex now handles multibyte character sets correctly.
469 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
471 * iconv (the program) does now conform to the upcoming XPG6 and handles
472 charmaps. Instead of the charset names the path of charmaps can be
473 provided and the conversion happens based on this data.
474 Contributed by Ulrich Drepper.
476 * The locale program now provides detailed information about the installed
477 locales. While
479 locale -a
481 only lists the names of the supported locales
483 locale -a --verbose
485 provides details such as country, language, and codeset name.
486 Contributed by Ulrich Drepper.
487 \f
488 Version 2.2.1
490 * The gencat program now parses the input file according to the charset
491 selected by the LC_CTYPE category. This is important for stateful
492 character sets. To make generating catalogs easier there is a way
493 to overwrite the charset selected by the locale: before the first
494 message or $ quote line the catalog can contain a line like
496 $ codeset=ISO-8859-2
498 to select the charset (ISO-8859-2 in this case).
500 Implemented by Shinya Hanataka and Ulrich Drepper.
502 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
503 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
504 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
506 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
507 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
509 * The LANGUAGE environment variable is now ignored unless the locale is
510 changed from the default "C" locale.
512 * The usual bug fixes.
513 \f
514 Version 2.2
516 * Greg McGary added runtime support for bounds checking using gcc's
517 new -fbounded-pointers option. ix86 target is complete. PowerPC
518 is in progress.
520 * Thorsten Kukuk added secure mode support to nscd.
522 * The Berkeley db libraries have been removed.
524 Related, the nss_db module is now in a separate package since it
525 obviously requires a database library being available.
527 * Wide character I/O streams implemented by Ulrich Drepper.
529 * Functions from the extended socket API added by Ulrich Drepper.
531 * Functions feenableexcept and fedisableexcept to control the
532 behaviour of individual exceptions have been added by Andreas Jaeger.
534 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
536 * The resolver code has been updated from bind 8.2.3-T5B which supports
537 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
538 and Mark Kettenis.
540 This change could in some situations effect backward compatibility. Since
541 now `_res' is a thread-local instead of a global variable, modifying it
542 in one thread does not have any effect in other threads.
544 The resolver library was also extended to allow IPv6 as the transport
545 protocol for the requests. This work was done by Stig Venaas.
547 * Compatibility code for K&R C compilers has been removed from the
548 header files. A ISO C compiler is needed to use the library
549 (conforming to either C89 or C99 standard).
551 * Complete rewrite of the localedef program to support multibyte character
552 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
553 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
554 Implemented by Ulrich Drepper.
556 Bruno Haible significantly improved the generation and use of the data
557 structures for the wide character tables.
559 * Plural handling in gettext implemented by Ulrich Drepper.
561 * The utmp daemon has been removed.
563 * The port to MIPS-Linux has been finished by Andreas Jaeger.
565 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
566 and Yutaka Niibe.
568 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
570 * POSIX barriers implemented by Kaz Kylheku.
572 * POSIX spawn function family implemented by Ulrich Drepper.
574 * POSIX spinlocks are now available.
576 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
578 * the configure option --enable-kernel=X.Y.Z allows to strip out
579 compatibility for kernel versions before X.Y.Z. This is currently only
580 implemented for Linux.
582 * the sockaddr_in6 structure changed. The IPv6 working group added a new
583 field sin6_scope_id. This means that all programs using IPv6 should be
584 recompiled. Don't expect binary compatibility with previous glibc
585 versions.
587 * various conversion modules for IBM character sets contributed by
588 Masahide Washizawa.
590 * IA-64 port by Jes Sorensen and HJ Lu.
592 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
593 Compiling the GNU C Library for Linux/ia64
594 ******************************************
596 Please refer to the file INSTALL in the same directory as you found
597 this file for general information about configuring and compiling
598 glibc.
600 For general inquiries about glibc under Linux/ia64 please use the
601 following mailing list linux-ia64@linuxia64.org or one of the relevant
602 glibc mailing lists.
604 Recommended Tools for Compilation
605 =================================
607 In order for glibc-2.2 to build correctly on the ia64 you need at
608 least the following versions of the GNU tools (the :
610 * The Cygnus toolchain snapshot for the ia64 as of August 4
611 including the provided set of patches. It is however recommend
612 you use the October 24 toolchain snapshot or a more recent version.
614 OR alternatively you can try the following (the Cygnus toolchain is
615 the recommended solution):
617 * GCC and binutils, GAS and GNU LD out of CVS from
618 sources.redhat.com as of August 28, 2000 or later. The CVS tree
619 may require special patches to work properly on the ia64.
621 Configuring and compiling GNU Libc for Linux/ia64
622 =================================================
624 The library requires Linux kernel version 2.4.0-test4-000728 or
625 later to funtion properly. Besides that it support for debug libraries
626 is currently untested. Hence the following options
627 are required for configuring the library:
629 --disable-debug --enable-kernel=2.4.0
631 It is also important that you make sure the library picks up the
632 appropriate kernel header files, if you do not have recent enough
633 kernel headers in /usr/src/linux/include, you should use the
634 --with-headers=<path> option to specify the location.
636 As an example I personally use the following options to configure
637 the library:
639 --disable-debug
640 --disable-cvs
641 --enable-kernel=2.4.0
642 --host=ia64-linux
643 --enable-add-ons=yes
644 --prefix=/usr
645 --with-headers=/home/jes/linux/include
648 Good luck
650 Jes Sorensen <jes@linuxcare.com>,
651 November 14th, 2000
652 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
653 \f
654 Version 2.1.3
656 * bug fixes
658 \f
659 Version 2.1.2
661 * bug fixes
663 \f
664 Version 2.1.1
666 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
668 * New xdr functions are added; some rpc functions are now 64bit clean.
670 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
672 * Fixed known incompatibilities with glibc 2.0.
674 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
676 * Optimized a number of functions (especially the ELF dynamic loader).
678 * Update timezone data files.
680 * lots of charmaps corrections
682 * some new locale definitions and charmaps
684 \f
685 Version 2.1
687 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
688 conform to POSIX member type requirements. Symbol versions have been
689 adjusted as needed within the library, and for direct use by applications,
690 but there is potential for problems if third-party libraries use
691 struct timeval as part of their interface. This does not present
692 a problem for X and other "essential" system libraries.
694 * An additional locale model to support C++ Standard Library locale
695 model and probably more was implemented by Ulrich Drepper.
697 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
698 symbol level.
700 * Miles Bader provided the `argp' function family to support hierachical
701 command line argument parsing, layered on top of getopt.
703 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
705 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
706 numbers.
708 * scanf recognizes the %a and %A format for scanning floating point numbers.
710 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
711 information and interfaces for the available integer types.
713 * about 130 new math functions were added to implement the ISO C9x math
714 library.
716 * the new header <complex.h> contains definitions of the complex math
717 functions from ISO C 9X.
719 * the new header <tgmath.h> defines generic macros to use complex or
720 real valued functions.
722 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
724 * Andreas Jaeger provided a test suite for the math library.
726 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
728 * Ulrich Drepper added character set conversion functions (iconv).
730 * Optimized string functions have been added.
732 * The localedata addon is now part of glibc.
734 * An implementation of profiling shared libraries was added by Ulrich Drepper.
736 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
737 daemon for NSS (nscd).
739 Missing a better place here are some numbers on improvements. Under
740 Linux 2.1.125 un-tar-ing the kernel sources takes
742 user system wall
744 using local files 12.19s 6.88s 22.91s
746 using NIS 13.92s 8.91s 26.34s
748 using NIS & nscd 10.37s 7.34s 25.30s
750 using NIS+ 27.57s 30.37s 640.46s
752 using NIS+ & nscd 10.25s 7.83s 26.51s
754 using NIS & old nscd [1] 13.83s 8.32s 29.60s
756 Keep in mind that non-namelookup related operations dominate above times.
757 It was just a common complain that using NIS+ unpacking the kernel is
758 horribly slow.
760 [1] The old nscd implementation is not available anymore since it was
761 distributed with glibc up to version 2.0.98 and thus is now replaced.
763 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
765 * Mark Kettenis provided a Hesiod NSS module.
767 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
768 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
770 * rcmd can now handle netgroups (Dick Streefland).
772 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
773 Bambrough.
775 * Support for the IPv6 protocol has been added to the socket API, as per the
776 latest draft standards.
778 * Support for Linux 2.2 has been added.
780 * Interface changes relative to the latest 2.0.x release:
781 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
782 addseverity NEW: Unix98
783 alphasort64 NEW: LFS
784 argp_err_exit_status NEW: argp, GNU ext
785 argp_error NEW: argp, GNU ext
786 argp_failure NEW: argp, GNU ext
787 argp_help NEW: argp, GNU ext
788 argp_parse NEW: argp, GNU ext
789 argp_program_bug_address NEW: argp, GNU ext
790 argp_program_version NEW: argp, GNU ext
791 argp_program_version_hook NEW: argp, GNU ext
792 argp_state_help NEW: argp, GNU ext
793 argp_usage NEW: argp, GNU ext
794 authdes_create NEW: Secure RPC
795 authdes_getucred NEW: Secure RPC
796 authdes_pk_create NEW: Secure RPC
797 backtrace NEW: GNU ext.
798 backtrace_symbols NEW: GNU ext.
799 backtrace_symbols_fd NEW: GNU ext.
800 cacos NEW: ISO C 9x
801 cacosf NEW: ISO C 9x
802 cacosh NEW: ISO C 9x
803 cacoshf NEW: ISO C 9x
804 cacoshl NEW: ISO C 9x
805 cacosl NEW: ISO C 9x
806 capget NEW: kernel
807 capset NEW: kernel
808 carg NEW: ISO C 9x
809 cargf NEW: ISO C 9x
810 cargl NEW: ISO C 9x
811 casin NEW: ISO C 9x
812 casinf NEW: ISO C 9x
813 casinh NEW: ISO C 9x
814 casinhf NEW: ISO C 9x
815 casinhl NEW: ISO C 9x
816 casinl NEW: ISO C 9x
817 catan NEW: ISO C 9x
818 catanf NEW: ISO C 9x
819 catanh NEW: ISO C 9x
820 catanhf NEW: ISO C 9x
821 catanhl NEW: ISO C 9x
822 catanl NEW: ISO C 9x
823 cbc_crypt NEW: Secure RPC
824 ccos NEW: ISO C 9x
825 ccosf NEW: ISO C 9x
826 ccosh NEW: ISO C 9x
827 ccoshf NEW: ISO C 9x
828 ccoshl NEW: ISO C 9x
829 ccosl NEW: ISO C 9x
830 cexp NEW: ISO C 9x
831 cexpf NEW: ISO C 9x
832 cexpl NEW: ISO C 9x
833 cimag NEW: ISO C 9x
834 cimagf NEW: ISO C 9x
835 cimagl NEW: ISO C 9x
836 clearerr_locked REMOVED
837 clntunix_create NEW: sunrpc ext
838 clog NEW: ISO C 9x
839 clog10 NEW: ISO C 9x
840 clog10f NEW: ISO C 9x
841 clog10l NEW: ISO C 9x
842 clogf NEW: ISO C 9x
843 clogl NEW: ISO C 9x
844 conj NEW: ISO C 9x
845 conjf NEW: ISO C 9x
846 conjl NEW: ISO C 9x
847 cpow NEW: ISO C 9x
848 cpowf NEW: ISO C 9x
849 cpowl NEW: ISO C 9x
850 cproj NEW: ISO C 9x
851 cprojf NEW: ISO C 9x
852 cprojl NEW: ISO C 9x
853 creal NEW: ISO C 9x
854 crealf NEW: ISO C 9x
855 creall NEW: ISO C 9x
856 creat64 NEW: LFS
857 csin NEW: ISO C 9x
858 csinf NEW: ISO C 9x
859 csinh NEW: ISO C 9x
860 csinhf NEW: ISO C 9x
861 csinhl NEW: ISO C 9x
862 csinl NEW: ISO C 9x
863 csqrt NEW: ISO C 9x
864 csqrtf NEW: ISO C 9x
865 csqrtl NEW: ISO C 9x
866 ctan NEW: ISO C 9x
867 ctanf NEW: ISO C 9x
868 ctanh NEW: ISO C 9x
869 ctanhf NEW: ISO C 9x
870 ctanhl NEW: ISO C 9x
871 ctanl NEW: ISO C 9x
872 des_setparity NEW: Secure RPC
873 ecb_crypt NEW: Secure RPC
874 endutxent NEW: Unix98
875 exp10 NEW: ISO C 9x
876 exp10f NEW: ISO C 9x
877 exp10l NEW: ISO C 9x
878 exp2 NEW: ISO C 9x
879 exp2f NEW: ISO C 9x
880 exp2l NEW: ISO C 9x
881 fattach NEW: STREAMS
882 fdetach NEW: STREAMS
883 fdim NEW: ISO C 9x
884 fdimf NEW: ISO C 9x
885 fdiml NEW: ISO C 9x
886 feclearexcept NEW: ISO C 9x
887 fegetenv NEW: ISO C 9x
888 fegetexceptflag NEW: ISO C 9x
889 fegetround NEW: ISO C 9x
890 feholdexcept NEW: ISO C 9x
891 feof_locked REMOVED
892 feraiseexcept NEW: ISO C 9x
893 ferror_locked REMOVED
894 fesetenv NEW: ISO C 9x
895 fesetexceptflag NEW: ISO C 9x
896 fesetround NEW: ISO C 9x
897 fetestexcept NEW: ISO C 9x
898 feupdateenv NEW: ISO C 9x
899 fflush_locked REMOVED
900 ffsl NEW: GNU ext.
901 ffsll NEW: GNU ext.
902 fgetpos64 NEW: LFS
903 fgets_unlocked NEW: GNU ext.
904 fileno_locked REMOVED
905 fma NEW: ISO C 9x
906 fmaf NEW: ISO C 9x
907 fmal NEW: ISO C 9x
908 fmax NEW: ISO C 9x
909 fmaxf NEW: ISO C 9x
910 fmaxl NEW: ISO C 9x
911 fmin NEW: ISO C 9x
912 fminf NEW: ISO C 9x
913 fminl NEW: ISO C 9x
914 fmtmsg NEW: Unix98
915 fopen64 NEW: LFS
916 fputc_locked REMOVED
917 fputs_unlocked NEW: GNU ext.
918 fread_unlocked NEW: GNU ext.
919 freopen64 NEW: LFS
920 fseeko NEW: Unix98
921 fsetpos64 NEW: LFS
922 fstatfs64 NEW: LFS
923 fstatvfs NEW: Unix98
924 fstatvfs64 NEW: LFS
925 ftello NEW: Unix98
926 ftello64 NEW: LFS
927 ftruncate64 NEW: LFS
928 ftw64 NEW: LFS
929 fwrite_unlocked NEW: GNU ext.
930 gai_strerror NEW: IPv6
931 gamma_r REMOVED
932 gammaf_r REMOVED
933 gammal_r REMOVED
934 getchar_locked REMOVED
935 getdate NEW: Unix98
936 getdate_err NEW: Unix98
937 getdate_r NEW: GNU ext.
938 getmsg NEW: STREAMS
939 getnameinfo NEW: IPv6
940 getnetname NEW: Secure RPC
941 getpmsg NEW: STREAMS
942 getpt NEW: Unix98 PTY
943 getrlimit64 NEW: LFS
944 getutxent NEW: Unix98
945 getutxid NEW: Unix98
946 getutxline NEW: Unix98
947 glob64 NEW: GNU ext.
948 globfree64 NEW: GNU ext.
949 gnu_get_libc_release NEW: GNU ext.
950 gnu_get_libc_version NEW: GNU ext.
951 grantpt NEW: Unix98 PTY
952 host2netname NEW: Secure RPC
953 iconv NEW: iconv
954 iconv_close NEW: iconv
955 iconv_open NEW: iconv
956 if_freenameindex NEW: IPv6
957 if_indextoname NEW: IPv6
958 if_nameindex NEW: IPv6
959 if_nametoindex NEW: IPv6
960 in6addr_any NEW: IPv6
961 in6addr_loopback NEW: IPv6
962 inet6_isipv4mapped NEW: IPv6
963 isastream NEW: STREAMS
964 iswblank NEW: GNU ext.
965 key_decryptsession NEW: Secure RPC
966 key_decryptsession_pk NEW: Secure RPC
967 key_encryptsession NEW: Secure RPC
968 key_encryptsession_pk NEW: Secure RPC
969 key_gendes NEW: Secure RPC
970 key_get_conv NEW: Secure RPC
971 key_secretkey_is_set NEW: Secure RPC
972 key_setnet NEW: Secure RPC
973 key_setsecret NEW: Secure RPC
974 llrint NEW: ISO C 9x
975 llrintf NEW: ISO C 9x
976 llrintl NEW: ISO C 9x
977 llround NEW: ISO C 9x
978 llroundf NEW: ISO C 9x
979 llroundl NEW: ISO C 9x
980 log2 NEW: ISO C 9x
981 log2f NEW: ISO C 9x
982 log2l NEW: ISO C 9x
983 lrint NEW: ISO C 9x
984 lrintf NEW: ISO C 9x
985 lrintl NEW: ISO C 9x
986 lround NEW: ISO C 9x
987 lroundf NEW: ISO C 9x
988 lroundl NEW: ISO C 9x
989 lseek64 NEW: LFS
990 makecontext NEW: Unix98
991 mempcpy NEW: GNU ext.
992 mmap64 NEW: LFS
993 moncontrol REMOVED
994 modify_ldt NEW: kernel
995 nan NEW: ISO C 9x
996 nanf NEW: ISO C 9x
997 nanl NEW: ISO C 9x
998 nearbyint NEW: ISO C 9x
999 nearbyintf NEW: ISO C 9x
1000 nearbyintl NEW: ISO C 9x
1001 netname2host NEW: Secure RPC
1002 netname2user NEW: Secure RPC
1003 nexttoward NEW: ISO C 9x
1004 nexttowardf NEW: ISO C 9x
1005 nexttowardl NEW: ISO C 9x
1006 nftw NEW: Unix98
1007 nftw64 NEW: LFS
1008 open64 NEW: LFS
1009 passwd2des NEW: Secure RPC
1010 pow10 NEW: GNU ext.
1011 pow10f NEW: GNU ext.
1012 pow10l NEW: GNU ext.
1013 pread NEW: Unix98
1014 pread64 NEW: LFS
1015 printf_size NEW: GNU ext.
1016 printf_size_info NEW: GNU ext.
1017 profil_counter REMOVED
1018 pthread_mutexattr_getkind_np REPLACED
1019 pthread_mutexattr_setkind_np REPLACED
1020 ptsname NEW: Unix98 PTY
1021 ptsname_r NEW: Unix98 PTY
1022 putc_locked REMOVED
1023 putchar_locked REMOVED
1024 putgrent NEW: GNU ext.
1025 putmsg NEW: STREAMS
1026 putpmsg NEW: STREAMS
1027 pututxline NEW: Unix98
1028 pwrite NEW: Unix98
1029 pwrite64 NEW: LFS
1030 readdir64 NEW: LFS
1031 readdir64_r NEW: LFS
1032 remquo NEW: ISO C 9x
1033 remquof NEW: ISO C 9x
1034 remquol NEW: ISO C 9x
1035 round NEW: ISO C 9x
1036 roundf NEW: ISO C 9x
1037 roundl NEW: ISO C 9x
1038 rtime NEW: GNU ext.
1039 scalbln NEW: ISO C 9x
1040 scalblnf NEW: ISO C 9x
1041 scalblnl NEW: ISO C 9x
1042 scandir64 NEW: LFS
1043 sendfile NEW: kernel
1044 setcontext NEW: Unix98
1045 setrlimit64 NEW: LFS
1046 setutxent NEW: Unix98
1047 sighold NEW: Unix98
1048 sigignore NEW: Unix98
1049 sigqueue NEW: POSIX.1b
1050 sigrelse NEW: Unix98
1051 sigset NEW: POSIX.1b
1052 sigtimedwait NEW: POSIX.1b
1053 sigwaitinfo NEW: POSIX.1b
1054 sincos NEW: GNU ext.
1055 sincosf NEW: GNU ext.
1056 sincosl NEW: GNU ext.
1057 statfs64 NEW: LFS
1058 statvfs NEW: Unix98
1059 statvfs64 NEW: LFS
1060 strcasestr NEW: GNU ext.
1061 strtoimax NEW: ISO C 9x
1062 strtoumax NEW: ISO C 9x
1063 strverscmp NEW: GNU ext.
1064 svcauthdes_stats NEW: Secure RPC
1065 svcunix_create NEW: sunrpc etx
1066 svcunixfd_create NEW: sunrpc ext
1067 swapcontext NEW: Unix98
1068 tcgetsid NEW: Unix98 PTY
1069 tdestroy NEW: GNU ext.
1070 tgamma NEW: ISO C 9x
1071 tgammaf NEW: ISO C 9x
1072 tgammal NEW: ISO C 9x
1073 tmpfile64 NEW: LFS
1074 trunc NEW: ISO C 9x
1075 truncate64 NEW: LFS
1076 truncf NEW: ISO C 9x
1077 truncl NEW: ISO C 9x
1078 umount2 NEW: kernel
1079 unlockpt NEW: Unix98 PTY
1080 updwtmpx NEW: Unix98
1081 user2netname NEW: Secure RPC
1082 utmpxname NEW: Unix98
1083 versionsort NEW: GNU ext.
1084 versionsort64 NEW: GNU ext.
1085 waitid NEW: Unix98
1086 wcscasecmp NEW: GNU ext.
1087 wcsncasecmp NEW: GNU ext.
1088 wcsnlen NEW: GNU ext.
1089 wcstoimax NEW: ISO C 9x
1090 wcstoll NEW: ISO C 9x
1091 wcstoull NEW: ISO C 9x
1092 wcstoumax NEW: ISO C 9x
1093 wcswcs NEW: Unix98
1094 wordexp NEW: POSIX.2
1095 wordfree NEW: POSIX.2
1096 write_profiling REMOVED
1097 xdecrypt NEW: Secure RPC
1098 xdr_authdes_cred NEW: Secure RPC
1099 xdr_authdes_verf NEW: Secure RPC
1100 xdr_cryptkeyarg NEW: Secure RPC
1101 xdr_cryptkeyarg2 NEW: Secure RPC
1102 xdr_cryptkeyres NEW: Secure RPC
1103 xdr_getcredres NEW: Secure RPC
1104 xdr_key_netstarg NEW: Secure RPC
1105 xdr_key_netstres NEW: Secure RPC
1106 xdr_keybuf NEW: Secure RPC
1107 xdr_keystatus NEW: Secure RPC
1108 xdr_netnamestr NEW: Secure RPC
1109 xdr_sizeof NEW: Secure RPC
1110 xdr_unixcred NEW: sunrpc ext
1111 xencrypt NEW: Secure RPC
1112 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1113 \f
1114 Version 2.0.6
1116 * more bug fixes
1118 \f
1119 Version 2.0.5
1121 * more bug fixes
1123 * inet_ntoa is thread-safe
1125 * updwtmp is moved from libutil to libc
1127 * rewrite of cbrt function
1129 * update of timezone data
1130 \f
1131 Version 2.0.4
1133 * more bug fixes
1134 \f
1135 Version 2.0.3
1137 * more bug fixes
1138 \f
1139 Version 2.0.2
1141 * more bug fixes
1143 * add atoll function
1145 * fix complex problems in Berkeley DB code
1147 * fix math functions
1148 \f
1149 Version 2.0.1
1151 * fixed lots of header problems (especially Linux/GNU specific)
1153 * dynamic loader preserves all registers
1155 * Roland McGrath provided support for handling of auxiliary objects in
1156 the ELF dynamic loader.
1158 * support for parallel builds is improved
1159 \f
1160 Version 2.0
1162 * GNU extensions are no longer declared by default. To enable them you
1163 must define the macro `_GNU_SOURCE' in your program or compile with
1164 `-D_GNU_SOURCE'.
1166 * The library has changed from using GNU ld symbol aliases to using weak
1167 symbols where available. The ELF object file format supports weak
1168 symbols; GNU ld also supports weak symbols in the a.out format. (There
1169 is also now support for other GNU ld extensions in ELF. Use the
1170 `--with-elf' option to configure to indicate you have ELF, and
1171 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1172 of many files which contained only symbol aliases, reducing the size of
1173 the source and the compiled library; many other files were renamed to
1174 less cryptic names previously occupied by the symbol alias files.
1175 There is a new header file <elf.h> for programs which operate on
1176 files in the ELF format.
1178 * Converted to Autoconf version 2, so `configure' has more options.
1179 Run `configure --help' to see the details.
1181 * The library can now be configured to build profiling, highly-optimized
1182 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1183 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1184 `configure' enable building these extra libraries. The shared library is
1185 built by default when using both ELF and GNU ld. When shared libraries
1186 are enabled, the new library `-ldl' is available for arbitrary run-time
1187 loading of shared objects; its interface is defined in <dlfcn.h>. The
1188 new header file <link.h> gives access to the internals of the run-time
1189 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1190 application of same name on other systems and it provides information
1191 about dynamically linked binaries.
1193 * The C library now provides the run-time support code for profiling
1194 executables compiled with `-pg'. Programs can control the profiling code
1195 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1196 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1197 the support for this file format was contributed by David Mosberger-Tang.
1199 * The math code has been replaced with a math library based on fdlibm from
1200 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1201 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1202 functions. The math functions now reside in a separate library, so
1203 programs using them will need to use `-lm' their linking commands.
1205 * John C. Bowman contributed optimized ix87 assembler inline functions.
1207 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1208 mechanism similar to that found in Solaris 2. This is now used for the
1209 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1210 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1211 file controls what services are used for each individual database. This
1212 works by loading shared libraries with names specified in `nsswitch.conf',
1213 so service modules can be changed or added at any time without even
1214 relinking any program. Currently there are the file, db, and NIS based
1215 NSS services available.
1217 * The new functions `strtoq' and `strtouq' parse integer values from
1218 strings, like `strtol' and `strtoul', but they return `long long int' and
1219 `unsigned long long int' values, respectively (64-bit quantities).
1221 * The new functions `strtof' and `strtold' parse floating-point values from
1222 strings, like `strtod', but they return `float' and `long double' values,
1223 respectively (on some machines `double' and `long double' are the same).
1225 * Ulrich Drepper has contributed new implementations of the floating-point
1226 printing and reading code used in the `printf' family of functions and
1227 `strtod', `strtof', and `strtold'. These new functions are perfectly
1228 accurate, and much faster than the old ones.
1230 * The implementation of the POSIX locale model was completely rewritten by
1231 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1232 to compile the POSIX locale definition.
1234 * The former dummy implementations of the strcoll and strxfrm function are
1235 now replaced by fully functional code contributed by Ulrich Drepper. The
1236 collation information comes from the POSIX locale definitions.
1238 * The new header <langinfo.h> defines an interface for accessing
1239 various locale-dependent data (using the locale chosen with `setlocale').
1241 * Ulrich Drepper has contributed a new suite of functions for operation on
1242 wide-character and multibyte-character strings, in <wchar.h>;
1243 and classification and case conversion of wide characters, in <wctype.h>.
1244 These new functions are conforming to the ISO C, Amendement 1 specification.
1246 * There is now a second implementation of the standard I/O library available.
1247 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1248 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1250 * You can now use positional parameter specifications in format strings
1251 for the `printf' and `scanf' families of functions. For example,
1252 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1253 ``Number 6, Mr Jones''. This is mainly useful when providing different
1254 format strings for different languages, whose grammars may dictate
1255 different orderings of the values being printed. To support this
1256 feature, the interface for `register_printf_handler' has changed; see
1257 the header file <printf.h> for details.
1259 * The `printf' and `scanf' families of functions now understand a new
1260 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1261 to group numbers as indicated by the locale; for `scanf' and friends, this
1262 says to accept as valid only a number with all the proper grouping
1263 separators in the right places. In the default "C" locale, numbers are
1264 not grouped; but locales for specific countries will define the usual
1265 conventions (i.e. separate thousands with `,' in the US locale).
1267 * The pgrp functions have been regularized, slightly incompatibly but much
1268 less confusingly. The core functions are now `getpgid' and `setpgid',
1269 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1270 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1271 provided for compatibility. There is no longer an incompatible `getpgrp'
1272 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1274 * The new header file <fts.h> and suite of functions simplify programs that
1275 operate on directory trees. This code comes from 4.4 BSD.
1277 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1278 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1279 NSS scheme used in glibc.
1281 * There is a new malloc debugging hook `__memalign_hook'.
1283 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1284 `unsigned int' in <sys/types.h>. These are for compatibility only and
1285 their use is discouraged.
1287 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1288 done differently, so that it works even without GNU ld.
1290 * New function `euidaccess' checks allowed access to a file like `access',
1291 but using the effective IDs instead of the real IDs.
1293 * The time zone data files have been updated for the latest and greatest
1294 local time conventions of the countries of the world.
1296 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1297 see <dirent.h>.
1299 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1300 for formatting floating-point numbers. They are provided only for
1301 compatibility; new programs should use `sprintf' instead. There are
1302 also equivalent function for the `long double' floating-point type and
1303 all functions also exist in a reentrant form.
1305 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1306 functions for maintaining the login-record files (primarily of use to
1307 system programs such as `login'), and convenient functions for
1308 allocating and initializing a pseudo-terminal (pty) device.
1310 * Ulrich Drepper has contributed new support for System V style
1311 shared memory and IPC on systems that support it.
1313 * Ulrich Drepper has contributed several miscellaneous new functions found
1314 in System V: The `hsearch' family of functions provide an effective
1315 implementation of hash tables; `a64l' and `l64a' provide a very simple
1316 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1317 number generator.
1319 * Ulrich Drepper has contributed new reentrant counterparts for the
1320 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1322 * Ulrich Drepper has contributed new, highly-optimized versions of several
1323 string functions for the i486/Pentium family of processors.
1325 * Ulrich Drepper has updated the Linux-specific code, based largely
1326 on work done in Hongjiu Lu's version of GNU libc for Linux.
1327 The GNU library now supports Linux versions 2.0.10 and later,
1328 using the ELF object file format (i[3456]86-*-linux).
1330 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1332 * David Mosberger-Tang and Richard Henderson have ported the C library
1333 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1334 dynamic linking support for ELF/Alpha.
1336 * Richard Henderson contributed several Alpha optimized assembler function
1337 for arithmetic and string handling.
1339 * Ulrich Drepper has contributed a new set of message catalog functions to
1340 support multiple languages using the <libintl.h> interface, for use with
1341 his new package GNU gettext. Translation volunteers have contributed
1342 catalogs of the library's messages in Spanish, German, and Korean.
1344 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1345 program and the `catgets' function for reading the catalog files it
1346 creates. (The <libintl.h> interface is preferred; we include the
1347 <nl_types.h> interface using `catgets' only for source compatibility with
1348 programs already written to use it.)
1350 * New header file <values.h> gives SVID-compatible names for <limits.h>
1351 constants.
1353 * Various new macros, declarations, and small header files for compatibility
1354 with 4.4 BSD.
1356 * New function `group_member' is a convenient way to check if a process has
1357 a given effective group ID.
1359 * When using GCC 2.7 and later, the socket functions are now declared in a
1360 special way so that passing an argument of type `struct sockaddr_in *',
1361 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1362 `struct sockaddr *' type, does not generate a type-clash warning.
1364 * New function `error' declared in header file <error.h> is a convenient
1365 function for printing error messages and optionally exiting; this is the
1366 canonical function used in GNU programs. The new functions `err', `warn',
1367 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1368 doing the same thing.
1370 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1371 POSIX.2 `glob' function to do ~ and {...} expansion.
1373 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1374 `clearenv' which is used in POSIX.9 is also available.
1376 * New function `getsid' returns session ID number on systems that support it.
1378 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1379 files <db.h> and <mpool.h> provide a rich set of functions for several
1380 types of simple databases stored in memory and in files, and <ndbm.h> is
1381 an old `ndbm'-compatible interface using the `db' functions. Link with
1382 `-ldb' to get these functions.
1384 * New macro `strdupa' copies a string like `strdup', but uses local stack
1385 space from `alloca' instead of dynamic heap space from `malloc'.
1387 * New function `strnlen' is like `strlen' but searches only a given maximum
1388 number of characters for the null terminator. `stpncpy', `strndup' and
1389 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1390 function.
1392 * New function `statfs' in header <sys/statfs.h>.
1394 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1395 provide convenient functions for operating on blocks of null-terminated
1396 strings.
1398 * A new suite of functions in <utmp.h> handle all the details of reading
1399 and writing the utmp file.
1401 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1402 Thorsten Kukuk.
1404 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1405 completely POSIX compliant and also implemented the extended functionality
1406 to handle alternate digit representation and alternate era date formats.
1408 * Ulrich Drepper provided an implementation of the `strptime' function
1409 defined in XPG4.2 which transforms a string into a `struct tm' value.
1411 * Paul Eggert provided the tzselect shell script as part of the timezone
1412 code. The shell script makes it easy to select the correct timezone
1413 specification.
1415 * The implementation of the malloc family of functions is completely replaced
1416 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1417 The implementation uses the mmap function (if available) and it is
1418 optimized for the use in multi threaded programs.
1420 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1421 functions. This new functionality is usable by specifying a special
1422 salt string and it is compatible with implementation on *BSD systems.
1424 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1425 `getsubopt' to handle second level command line options, `bsd_signal'
1426 to access BSD style `signal' functionality, the obsolete `regexp' style
1427 expression matcher.
1429 * the `lchown' function is available on system which support this
1430 functionality.
1432 * The implementation of the shadow password handling function was contributed
1433 by Ulrich Drepper.
1435 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1437 * POSIX.1g support was added. The <sys/select.h> header is available,
1438 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1439 implementation of `getaddrinfo'.
1440 \f
1441 Version 1.09
1443 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1445 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1446 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1448 * The new function `daemon' from 4.4 BSD is useful for server programs that
1449 want to put themselves in the background.
1451 * Joel Sherrill has contributed support for several standalone boards that
1452 run without an operating system.
1454 * `printf', `scanf' and friends now accept a `q' type modifier for long
1455 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1457 * All of the code taken from BSD (notably most of the math and networking
1458 routines) has been updated from the BSD 4.4-Lite release.
1460 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1462 * The new functions `getdomainname' and `setdomainname' fetch or change the
1463 YP/NIS domain name. These are system calls which exist on systems which
1464 have YP (aka NIS).
1466 * The time zone data files have been updated for the latest international
1467 conventions.
1469 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1470 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1471 \f
1472 Version 1.08
1474 * The C library now includes support for Sun RPC, from Sun's free
1475 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1476 are included. (There is still no support for YP.)
1478 * Tom Quinn has contributed a port of the C library to SGI machines running
1479 Irix 4 (mips-sgi-irix4).
1481 * The new `lockf' function is a simplified interface to the locking
1482 facilities of `fcntl', included for compatibility.
1484 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1486 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1488 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1489 compatibility.
1491 * The error message printed by `assert' for a failed assertion now includes
1492 the name of the program (if using GNU ld) and the name of the calling
1493 function (with versions of GCC that support this).
1495 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1497 * The library now includes the <sys/mman.h> header file and memory
1498 management functions `mmap', `munmap', `mprotect', `msync', and
1499 `madvise', on systems that support those facilities.
1501 * The interface for `mcheck' has changed slightly: the function called to
1502 abort the program when an allocation inconsistency is detected now takes
1503 an argument that indicates the type of failure. The new function
1504 `mprobe' lets you request a consistency check for a particular block at
1505 any time (checks are normally done only when you call `free' or `realloc'
1506 on a block).
1508 * It is now possible to easily cross-compile the C library, building on one
1509 system a library to run on another machine and/or operating system. All
1510 you need to do is set the variable `HOST_CC' in `configparms' to the
1511 native compiler for programs to run on the machine you are building on (a
1512 few generator programs are used on Unix systems); set `CC' to the
1513 cross-compiler.
1515 * The new function `fexecve' (only implemented on the GNU system) executes
1516 a program file given a file descriptor already open on the file.
1517 \f
1518 Version 1.07
1520 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1521 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1523 * You can set the variable `libprefix' in `configparms' to specify a prefix
1524 to be prepended to installed library files; this makes it easy to install
1525 the GNU C library to be linked as `-lgnuc' or whatever.
1527 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1528 copies a limited number of characters from a string, and returns the
1529 address of the last character written.
1531 * You no longer need to check for whether the installed `stddef.h' is
1532 compatible with the GNU C library. configure now checks for you.
1534 * You can now define a per-stream `fileno' function to convert the
1535 stream's cookie into an integral file descriptor.
1537 * ``malloc (0)'' no longer returns a null pointer. Instead, it
1538 allocates zero bytes of storage, and returns a unique pointer which
1539 you can pass to `realloc' or `free'. The behavior is undefined if
1540 you dereference this pointer.
1542 * The C library now runs on Sony NEWS m68k machines running either
1543 NewsOS 3 or NewsOS 4.
1545 * The new `syscall' function is a system-dependent primitive function
1546 for invoking system calls. It has the canonical behavior on Unix
1547 systems, including unreliable return values for some calls (such as
1548 `pipe', `fork' and `getppid').
1550 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
1551 to `EAGAIN', which is the preferred name. On systems whose kernels
1552 use two distinct codes, the C library now translates EWOULDBLOCK to
1553 EAGAIN in every system call function.
1554 \f
1555 Version 1.06
1557 * The GNU C Library Reference Manual is now distributed with the library.
1558 `make dvi' will produce a DVI file of the printed manual.
1559 `make info' will produce Info files that you can read on line using C-h i
1560 in Emacs or the `info' program.
1561 Please send comments on the manual to bug-glibc-manual@gnu.org.
1563 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
1565 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
1567 * Jason Merrill has contributed a port to the Sequent Symmetry running
1568 Dynix version 3 (i386-sequent-dynix).
1570 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
1571 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
1573 * New function `memory_warnings' lets you arrange to get warnings when
1574 malloc is running out of memory to allocate, like Emacs gives you.
1576 * The C library now contains the relocating allocator used in Emacs 19 for
1577 its editing buffers. This allocator (ralloc) minimizes allocation
1578 overhead and fragmentation by moving allocated regions around whenever it
1579 needs to. You always refer to a ralloc'd region with a "handle" (a
1580 pointer to a pointer--an object of type `void **').
1582 * There is a new `printf' format: `%m' gives you the string corresponding
1583 to the error code in `errno'.
1585 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
1586 or `%[' conversion, but instead of filling in a fixed-sized buffer you
1587 pass, the `a' modifier says to fill in a `char **' you pass with a
1588 malloc'd string.
1590 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
1591 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
1592 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
1594 * `mkstemp' is a traditional Unix function to atomically create and open a
1595 uniquely-named temporary file.
1596 \f
1597 Version 1.05
1599 * The standard location for the file that says what the local timezone is
1600 has changed again. It is now `/usr/local/etc/localtime' (or more
1601 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
1603 * The distribution no longer contains any files with names longer than 14
1604 characters.
1606 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
1607 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
1609 * New functions `ttyslot' and `syslog' from 4.4 BSD.
1610 \f
1611 Version 1.04
1613 * The configuration process has changed quite a bit. The `configure'
1614 script is now used just like the configuration scripts for other GNU
1615 packages. The `sysdeps' directory hierarchy is much rearranged.
1616 The file `INSTALL' explains the new scheme in detail.
1618 * The header files no longer need to be processed into ANSI C and
1619 traditional C versions. There is just one set of files to install, and
1620 it will work with ANSI or old C compilers (including `gcc -traditional').
1622 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
1623 MIPS DECStation running Ultrix 4.
1625 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
1626 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
1627 made itself into a shared library.
1629 * Yet further improved support for the i386, running 4.3 BSD-like systems
1630 (such as Mach 3 with the Unix single-server), or System V.
1632 * New function `strncasecmp' to do case-insensitive string comparison
1633 with limited length.
1635 * New function `strsep' is a reentrant alternative to `strtok'.
1637 * New functions `scandir' and `alphasort' for searching directories.
1639 * New function `setenv' is a better interface to `putenv'.
1641 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
1642 function for traversing a directory tree.
1644 * The GNU obstack package is now also part of the C library.
1645 The new function `open_obstack_stream' creates a stdio stream that
1646 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
1647 formatted output directly to an obstack.
1649 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
1650 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
1652 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
1654 * The new functions `strfry' and `memfrob' do mysterious and wonderful
1655 things to your strings.
1657 * There are some new test programs: test-fseek, testmb, and testrand.
1659 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
1660 These ports are not finished, but are a good starting place for really
1661 supporting those systems.
1663 * `/etc/localtime' is now the standard location for the file that says what
1664 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
1665 This follows the general principle that `/etc' is the place for all local
1666 configuration files.
1668 * The C library header files now use `extern "C"' when used by the C++
1669 compiler, so the C library should now work with C++ code.
1671 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
1672 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
1673 in <strings.h>.)
1675 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
1676 function which uses the `merge sort' algorithm, and is said to be
1677 significantly faster than the old GNU `qsort' function. Merge sort is
1678 now the standard `qsort' function. The new algorithm can require a lot
1679 of temporary storage; so, the old sorting function is called when the
1680 required storage is not available.
1682 * The C library now includes Michael Glad's Ultra Fast Crypt, which
1683 provides the Unix `crypt' function, plus some other entry points.
1685 * The code and header files taken from 4.4 BSD have been updated with the
1686 latest files released from Berkeley.
1687 \f
1688 ----------------------------------------------------------------------
1689 Copyright information:
1691 Copyright (C) 1992-1999,2000,2001,2002,2003,2004,2005,2006
1692 Free Software Foundation, Inc.
1694 Permission is granted to anyone to make or distribute verbatim copies
1695 of this document as received, in any medium, provided that the
1696 copyright notice and this permission notice are preserved,
1697 thus giving the recipient permission to redistribute in turn.
1699 Permission is granted to distribute modified versions
1700 of this document, or of portions of it,
1701 under the above conditions, provided also that they
1702 carry prominent notices stating who last changed them.
1703 \f
1704 Local variables:
1705 version-control: never
1706 End: