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1 GNU C Library NEWS -- history of user-visible changes. 1999-06-16
3 Copyright (C) 1992, 93, 94, 95, 96, 97, 98, 99 Free Software Foundation, Inc.
4 See the end for copying conditions.
6 Please send GNU C library bug reports using the `glibcbug' script to
7 <bugs@gnu.org>. Questions and suggestions should be send to
8 <bug-glibc@gnu.org>.
9 \f
10 Version 2.2
12 * Thorsten Kukuk added secure mode support to nscd.
14 * Update from Berkeley db 2.7.5.
16 * Wide character I/O streams implemented by Ulrich Drepper.
18 \f
19 Version 2.1.1
21 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
23 * New xdr functions are added; some rpc functions are now 64bit clean.
25 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
27 * Fixed known incompatibilities with glibc 2.0.
29 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
31 * Optimized a number of functions (especially the ELF dynamic loader).
33 * Update timezone data files.
35 * lots of charmaps corrections
37 * some new locale definitions and charmaps
39 \f
40 Version 2.1
42 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
43 conform to POSIX member type requirements. Symbol versions have been
44 adjusted as needed within the library, and for direct use by applications,
45 but there is potential for problems if third-party libraries use
46 struct timeval as part of their interface. This does not present
47 a problem for X and other "essential" system libraries.
49 * An additional locale model to support C++ Standard Library locale
50 model and probably more was implemented by Ulrich Drepper.
52 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
53 symbol level.
55 * Miles Bader provided the `argp' function family to support hierachical
56 command line argument parsing, layered on top of getopt.
58 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
60 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
61 numbers.
63 * scanf recognizes the %a and %A format for scanning floating point numbers.
65 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
66 information and interfaces for the available integer types.
68 * about 130 new math functions were added to implement the ISO C9x math
69 library.
71 * the new header <complex.h> contains definitions of the complex math
72 functions from ISO C 9X.
74 * the new header <tgmath.h> defines generic macros to use complex or
75 real valued functions.
77 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
79 * Andreas Jaeger provided a test suite for the math library.
81 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
83 * Ulrich Drepper added character set conversion functions (iconv).
85 * Optimized string functions have been added.
87 * The localedata addon is now part of glibc.
89 * An implementation of profiling shared libraries was added by Ulrich Drepper.
91 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
92 daemon for NSS (nscd).
94 Missing a better place here are some numbers on improvements. Under
95 Linux 2.1.125 un-tar-ing the kernel sources takes
97 user system wall
99 using local files 12.19s 6.88s 22.91s
101 using NIS 13.92s 8.91s 26.34s
103 using NIS & nscd 10.37s 7.34s 25.30s
105 using NIS+ 27.57s 30.37s 640.46s
107 using NIS+ & nscd 10.25s 7.83s 26.51s
109 using NIS & old nscd [1] 13.83s 8.32s 29.60s
111 Keep in mind that non-namelookup related operations dominate above times.
112 It was just a common complain that using NIS+ unpacking the kernel is
113 horribly slow.
115 [1] The old nscd implementation is not available anymore since it was
116 distributed with glibc up to version 2.0.98 and thus is now replaced.
118 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
120 * Mark Kettenis provided a Hesiod NSS module.
122 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
123 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
125 * rcmd can now handle netgroups (Dick Streefland).
127 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
128 Bambrough.
130 * Support for the IPv6 protocol has been added to the socket API, as per the
131 latest draft standards.
133 * Support for Linux 2.2 has been added.
135 * Interface changes relative to the latest 2.0.x release:
136 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
137 addseverity NEW: Unix98
138 alphasort64 NEW: LFS
139 argp_err_exit_status NEW: argp, GNU ext
140 argp_error NEW: argp, GNU ext
141 argp_failure NEW: argp, GNU ext
142 argp_help NEW: argp, GNU ext
143 argp_parse NEW: argp, GNU ext
144 argp_program_bug_address NEW: argp, GNU ext
145 argp_program_version NEW: argp, GNU ext
146 argp_program_version_hook NEW: argp, GNU ext
147 argp_state_help NEW: argp, GNU ext
148 argp_usage NEW: argp, GNU ext
149 authdes_create NEW: Secure RPC
150 authdes_getucred NEW: Secure RPC
151 authdes_pk_create NEW: Secure RPC
152 backtrace NEW: GNU ext.
153 backtrace_symbols NEW: GNU ext.
154 backtrace_symbols_fd NEW: GNU ext.
155 cacos NEW: ISO C 9x
156 cacosf NEW: ISO C 9x
157 cacosh NEW: ISO C 9x
158 cacoshf NEW: ISO C 9x
159 cacoshl NEW: ISO C 9x
160 cacosl NEW: ISO C 9x
161 capget NEW: kernel
162 capset NEW: kernel
163 carg NEW: ISO C 9x
164 cargf NEW: ISO C 9x
165 cargl NEW: ISO C 9x
166 casin NEW: ISO C 9x
167 casinf NEW: ISO C 9x
168 casinh NEW: ISO C 9x
169 casinhf NEW: ISO C 9x
170 casinhl NEW: ISO C 9x
171 casinl NEW: ISO C 9x
172 catan NEW: ISO C 9x
173 catanf NEW: ISO C 9x
174 catanh NEW: ISO C 9x
175 catanhf NEW: ISO C 9x
176 catanhl NEW: ISO C 9x
177 catanl NEW: ISO C 9x
178 cbc_crypt NEW: Secure RPC
179 ccos NEW: ISO C 9x
180 ccosf NEW: ISO C 9x
181 ccosh NEW: ISO C 9x
182 ccoshf NEW: ISO C 9x
183 ccoshl NEW: ISO C 9x
184 ccosl NEW: ISO C 9x
185 cexp NEW: ISO C 9x
186 cexpf NEW: ISO C 9x
187 cexpl NEW: ISO C 9x
188 cimag NEW: ISO C 9x
189 cimagf NEW: ISO C 9x
190 cimagl NEW: ISO C 9x
191 clearerr_locked REMOVED
192 clntunix_create NEW: sunrpc ext
193 clog NEW: ISO C 9x
194 clog10 NEW: ISO C 9x
195 clog10f NEW: ISO C 9x
196 clog10l NEW: ISO C 9x
197 clogf NEW: ISO C 9x
198 clogl NEW: ISO C 9x
199 conj NEW: ISO C 9x
200 conjf NEW: ISO C 9x
201 conjl NEW: ISO C 9x
202 cpow NEW: ISO C 9x
203 cpowf NEW: ISO C 9x
204 cpowl NEW: ISO C 9x
205 cproj NEW: ISO C 9x
206 cprojf NEW: ISO C 9x
207 cprojl NEW: ISO C 9x
208 creal NEW: ISO C 9x
209 crealf NEW: ISO C 9x
210 creall NEW: ISO C 9x
211 creat64 NEW: LFS
212 csin NEW: ISO C 9x
213 csinf NEW: ISO C 9x
214 csinh NEW: ISO C 9x
215 csinhf NEW: ISO C 9x
216 csinhl NEW: ISO C 9x
217 csinl NEW: ISO C 9x
218 csqrt NEW: ISO C 9x
219 csqrtf NEW: ISO C 9x
220 csqrtl NEW: ISO C 9x
221 ctan NEW: ISO C 9x
222 ctanf NEW: ISO C 9x
223 ctanh NEW: ISO C 9x
224 ctanhf NEW: ISO C 9x
225 ctanhl NEW: ISO C 9x
226 ctanl NEW: ISO C 9x
227 des_setparity NEW: Secure RPC
228 ecb_crypt NEW: Secure RPC
229 endutxent NEW: Unix98
230 exp10 NEW: ISO C 9x
231 exp10f NEW: ISO C 9x
232 exp10l NEW: ISO C 9x
233 exp2 NEW: ISO C 9x
234 exp2f NEW: ISO C 9x
235 exp2l NEW: ISO C 9x
236 fattach NEW: STREAMS
237 fdetach NEW: STREAMS
238 fdim NEW: ISO C 9x
239 fdimf NEW: ISO C 9x
240 fdiml NEW: ISO C 9x
241 feclearexcept NEW: ISO C 9x
242 fegetenv NEW: ISO C 9x
243 fegetexceptflag NEW: ISO C 9x
244 fegetround NEW: ISO C 9x
245 feholdexcept NEW: ISO C 9x
246 feof_locked REMOVED
247 feraiseexcept NEW: ISO C 9x
248 ferror_locked REMOVED
249 fesetenv NEW: ISO C 9x
250 fesetexceptflag NEW: ISO C 9x
251 fesetround NEW: ISO C 9x
252 fetestexcept NEW: ISO C 9x
253 feupdateenv NEW: ISO C 9x
254 fflush_locked REMOVED
255 ffsl NEW: GNU ext.
256 ffsll NEW: GNU ext.
257 fgetpos64 NEW: LFS
258 fgets_unlocked NEW: GNU ext.
259 fileno_locked REMOVED
260 fma NEW: ISO C 9x
261 fmaf NEW: ISO C 9x
262 fmal NEW: ISO C 9x
263 fmax NEW: ISO C 9x
264 fmaxf NEW: ISO C 9x
265 fmaxl NEW: ISO C 9x
266 fmin NEW: ISO C 9x
267 fminf NEW: ISO C 9x
268 fminl NEW: ISO C 9x
269 fmtmsg NEW: Unix98
270 fopen64 NEW: LFS
271 fputc_locked REMOVED
272 fputs_unlocked NEW: GNU ext.
273 fread_unlocked NEW: GNU ext.
274 freopen64 NEW: LFS
275 fseeko NEW: Unix98
276 fsetpos64 NEW: LFS
277 fstatfs64 NEW: LFS
278 fstatvfs NEW: Unix98
279 fstatvfs64 NEW: LFS
280 ftello NEW: Unix98
281 ftello64 NEW: LFS
282 ftruncate64 NEW: LFS
283 ftw64 NEW: LFS
284 fwrite_unlocked NEW: GNU ext.
285 gai_strerror NEW: IPv6
286 gamma_r REMOVED
287 gammaf_r REMOVED
288 gammal_r REMOVED
289 getchar_locked REMOVED
290 getdate NEW: Unix98
291 getdate_err NEW: Unix98
292 getdate_r NEW: GNU ext.
293 getmsg NEW: STREAMS
294 getnameinfo NEW: IPv6
295 getnetname NEW: Secure RPC
296 getpmsg NEW: STREAMS
297 getpt NEW: Unix98 PTY
298 getrlimit64 NEW: LFS
299 getutxent NEW: Unix98
300 getutxid NEW: Unix98
301 getutxline NEW: Unix98
302 glob64 NEW: GNU ext.
303 globfree64 NEW: GNU ext.
304 gnu_get_libc_release NEW: GNU ext.
305 gnu_get_libc_version NEW: GNU ext.
306 grantpt NEW: Unix98 PTY
307 host2netname NEW: Secure RPC
308 iconv NEW: iconv
309 iconv_close NEW: iconv
310 iconv_open NEW: iconv
311 if_freenameindex NEW: IPv6
312 if_indextoname NEW: IPv6
313 if_nameindex NEW: IPv6
314 if_nametoindex NEW: IPv6
315 in6addr_any NEW: IPv6
316 in6addr_loopback NEW: IPv6
317 inet6_isipv4mapped NEW: IPv6
318 isastream NEW: STREAMS
319 iswblank NEW: GNU ext.
320 key_decryptsession NEW: Secure RPC
321 key_decryptsession_pk NEW: Secure RPC
322 key_encryptsession NEW: Secure RPC
323 key_encryptsession_pk NEW: Secure RPC
324 key_gendes NEW: Secure RPC
325 key_get_conv NEW: Secure RPC
326 key_secretkey_is_set NEW: Secure RPC
327 key_setnet NEW: Secure RPC
328 key_setsecret NEW: Secure RPC
329 llrint NEW: ISO C 9x
330 llrintf NEW: ISO C 9x
331 llrintl NEW: ISO C 9x
332 llround NEW: ISO C 9x
333 llroundf NEW: ISO C 9x
334 llroundl NEW: ISO C 9x
335 log2 NEW: ISO C 9x
336 log2f NEW: ISO C 9x
337 log2l NEW: ISO C 9x
338 lrint NEW: ISO C 9x
339 lrintf NEW: ISO C 9x
340 lrintl NEW: ISO C 9x
341 lround NEW: ISO C 9x
342 lroundf NEW: ISO C 9x
343 lroundl NEW: ISO C 9x
344 lseek64 NEW: LFS
345 makecontext NEW: Unix98
346 mempcpy NEW: GNU ext.
347 mmap64 NEW: LFS
348 moncontrol REMOVED
349 modify_ldt NEW: kernel
350 nan NEW: ISO C 9x
351 nanf NEW: ISO C 9x
352 nanl NEW: ISO C 9x
353 nearbyint NEW: ISO C 9x
354 nearbyintf NEW: ISO C 9x
355 nearbyintl NEW: ISO C 9x
356 netname2host NEW: Secure RPC
357 netname2user NEW: Secure RPC
358 nexttoward NEW: ISO C 9x
359 nexttowardf NEW: ISO C 9x
360 nexttowardl NEW: ISO C 9x
361 nftw NEW: Unix98
362 nftw64 NEW: LFS
363 open64 NEW: LFS
364 passwd2des NEW: Secure RPC
365 pow10 NEW: GNU ext.
366 pow10f NEW: GNU ext.
367 pow10l NEW: GNU ext.
368 pread NEW: Unix98
369 pread64 NEW: LFS
370 printf_size NEW: GNU ext.
371 printf_size_info NEW: GNU ext.
372 profil_counter REMOVED
373 pthread_mutexattr_getkind_np REPLACED
374 pthread_mutexattr_setkind_np REPLACED
375 ptsname NEW: Unix98 PTY
376 ptsname_r NEW: Unix98 PTY
377 putc_locked REMOVED
378 putchar_locked REMOVED
379 putgrent NEW: GNU ext.
380 putmsg NEW: STREAMS
381 putpmsg NEW: STREAMS
382 pututxline NEW: Unix98
383 pwrite NEW: Unix98
384 pwrite64 NEW: LFS
385 readdir64 NEW: LFS
386 readdir64_r NEW: LFS
387 remquo NEW: ISO C 9x
388 remquof NEW: ISO C 9x
389 remquol NEW: ISO C 9x
390 round NEW: ISO C 9x
391 roundf NEW: ISO C 9x
392 roundl NEW: ISO C 9x
393 rtime NEW: GNU ext.
394 scalbln NEW: ISO C 9x
395 scalblnf NEW: ISO C 9x
396 scalblnl NEW: ISO C 9x
397 scandir64 NEW: LFS
398 sendfile NEW: kernel
399 setcontext NEW: Unix98
400 setrlimit64 NEW: LFS
401 setutxent NEW: Unix98
402 sighold NEW: Unix98
403 sigignore NEW: Unix98
404 sigqueue NEW: POSIX.1b
405 sigrelse NEW: Unix98
406 sigset NEW: POSIX.1b
407 sigtimedwait NEW: POSIX.1b
408 sigwaitinfo NEW: POSIX.1b
409 sincos NEW: GNU ext.
410 sincosf NEW: GNU ext.
411 sincosl NEW: GNU ext.
412 statfs64 NEW: LFS
413 statvfs NEW: Unix98
414 statvfs64 NEW: LFS
415 strcasestr NEW: GNU ext.
416 strtoimax NEW: ISO C 9x
417 strtoumax NEW: ISO C 9x
418 strverscmp NEW: GNU ext.
419 svcauthdes_stats NEW: Secure RPC
420 svcunix_create NEW: sunrpc etx
421 svcunixfd_create NEW: sunrpc ext
422 swapcontext NEW: Unix98
423 tcgetsid NEW: Unix98 PTY
424 tdestroy NEW: GNU ext.
425 tgamma NEW: ISO C 9x
426 tgammaf NEW: ISO C 9x
427 tgammal NEW: ISO C 9x
428 tmpfile64 NEW: LFS
429 trunc NEW: ISO C 9x
430 truncate64 NEW: LFS
431 truncf NEW: ISO C 9x
432 truncl NEW: ISO C 9x
433 umount2 NEW: kernel
434 unlockpt NEW: Unix98 PTY
435 updwtmpx NEW: Unix98
436 user2netname NEW: Secure RPC
437 utmpxname NEW: Unix98
438 versionsort NEW: GNU ext.
439 versionsort64 NEW: GNU ext.
440 waitid NEW: Unix98
441 wcscasecmp NEW: GNU ext.
442 wcsncasecmp NEW: GNU ext.
443 wcsnlen NEW: GNU ext.
444 wcstoimax NEW: ISO C 9x
445 wcstoll NEW: ISO C 9x
446 wcstoull NEW: ISO C 9x
447 wcstoumax NEW: ISO C 9x
448 wcswcs NEW: Unix98
449 wordexp NEW: POSIX.2
450 wordfree NEW: POSIX.2
451 write_profiling REMOVED
452 xdecrypt NEW: Secure RPC
453 xdr_authdes_cred NEW: Secure RPC
454 xdr_authdes_verf NEW: Secure RPC
455 xdr_cryptkeyarg NEW: Secure RPC
456 xdr_cryptkeyarg2 NEW: Secure RPC
457 xdr_cryptkeyres NEW: Secure RPC
458 xdr_getcredres NEW: Secure RPC
459 xdr_key_netstarg NEW: Secure RPC
460 xdr_key_netstres NEW: Secure RPC
461 xdr_keybuf NEW: Secure RPC
462 xdr_keystatus NEW: Secure RPC
463 xdr_netnamestr NEW: Secure RPC
464 xdr_sizeof NEW: Secure RPC
465 xdr_unixcred NEW: sunrpc ext
466 xencrypt NEW: Secure RPC
467 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
468 \f
469 Version 2.0.6
471 * more bug fixes
473 \f
474 Version 2.0.5
476 * more bug fixes
478 * inet_ntoa is thread-safe
480 * updwtmp is moved from libutil to libc
482 * rewrite of cbrt function
484 * update of timezone data
485 \f
486 Version 2.0.4
488 * more bug fixes
489 \f
490 Version 2.0.3
492 * more bug fixes
493 \f
494 Version 2.0.2
496 * more bug fixes
498 * add atoll function
500 * fix complex problems in Berkeley DB code
502 * fix math functions
503 \f
504 Version 2.0.1
506 * fixed lots of header problems (especially Linux/GNU specific)
508 * dynamic loader preserves all registers
510 * Roland McGrath provided support for handling of auxiliary objects in
511 the ELF dynamic loader.
513 * support for parallel builds is improved
514 \f
515 Version 2.0
517 * GNU extensions are no longer declared by default. To enable them you
518 must define the macro `_GNU_SOURCE' in your program or compile with
519 `-D_GNU_SOURCE'.
521 * The library has changed from using GNU ld symbol aliases to using weak
522 symbols where available. The ELF object file format supports weak
523 symbols; GNU ld also supports weak symbols in the a.out format. (There
524 is also now support for other GNU ld extensions in ELF. Use the
525 `--with-elf' option to configure to indicate you have ELF, and
526 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
527 of many files which contained only symbol aliases, reducing the size of
528 the source and the compiled library; many other files were renamed to
529 less cryptic names previously occupied by the symbol alias files.
530 There is a new header file <elf.h> for programs which operate on
531 files in the ELF format.
533 * Converted to Autoconf version 2, so `configure' has more options.
534 Run `configure --help' to see the details.
536 * The library can now be configured to build profiling, highly-optimized
537 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
538 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
539 `configure' enable building these extra libraries. The shared library is
540 built by default when using both ELF and GNU ld. When shared libraries
541 are enabled, the new library `-ldl' is available for arbitrary run-time
542 loading of shared objects; its interface is defined in <dlfcn.h>. The
543 new header file <link.h> gives access to the internals of the run-time
544 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
545 application of same name on other systems and it provides information
546 about dynamically linked binaries.
548 * The C library now provides the run-time support code for profiling
549 executables compiled with `-pg'. Programs can control the profiling code
550 through the interface in <sys/gmon.h>. The `gmon.out' files written by
551 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
552 the support for this file format was contributed by David Mosberger-Tang.
554 * The math code has been replaced with a math library based on fdlibm from
555 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
556 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
557 functions. The math functions now reside in a separate library, so
558 programs using them will need to use `-lm' their linking commands.
560 * John C. Bowman contributed optimized ix87 assembler inline functions.
562 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
563 mechanism similar to that found in Solaris 2. This is now used for the
564 group, passwd, hosts, networks, services, protocols, rpc, ethers,
565 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
566 file controls what services are used for each individual database. This
567 works by loading shared libraries with names specified in `nsswitch.conf',
568 so service modules can be changed or added at any time without even
569 relinking any program. Currently there are the file, db, and NIS based
570 NSS services available.
572 * The new functions `strtoq' and `strtouq' parse integer values from
573 strings, like `strtol' and `strtoul', but they return `long long int' and
574 `unsigned long long int' values, respectively (64-bit quantities).
576 * The new functions `strtof' and `strtold' parse floating-point values from
577 strings, like `strtod', but they return `float' and `long double' values,
578 respectively (on some machines `double' and `long double' are the same).
580 * Ulrich Drepper has contributed new implementations of the floating-point
581 printing and reading code used in the `printf' family of functions and
582 `strtod', `strtof', and `strtold'. These new functions are perfectly
583 accurate, and much faster than the old ones.
585 * The implementation of the POSIX locale model was completely rewritten by
586 Ulrich Drepper. This includes the new programs `localedef' and `locale'
587 to compile the POSIX locale definition.
589 * The former dummy implementations of the strcoll and strxfrm function are
590 now replaced by fully functional code contributed by Ulrich Drepper. The
591 collation information comes from the POSIX locale definitions.
593 * The new header <langinfo.h> defines an interface for accessing
594 various locale-dependent data (using the locale chosen with `setlocale').
596 * Ulrich Drepper has contributed a new suite of functions for operation on
597 wide-character and multibyte-character strings, in <wchar.h>;
598 and classification and case conversion of wide characters, in <wctype.h>.
599 These new functions are conforming to the ISO C, Amendement 1 specification.
601 * There is now a second implementation of the standard I/O library available.
602 It comes from GNU libg++ as was written by Per Bothner, heavily modified
603 by Hongjiu Lu and made thread safe by Ulrich Drepper.
605 * You can now use positional parameter specifications in format strings
606 for the `printf' and `scanf' families of functions. For example,
607 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
608 ``Number 6, Mr Jones''. This is mainly useful when providing different
609 format strings for different languages, whose grammars may dictate
610 different orderings of the values being printed. To support this
611 feature, the interface for `register_printf_handler' has changed; see
612 the header file <printf.h> for details.
614 * The `printf' and `scanf' families of functions now understand a new
615 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
616 to group numbers as indicated by the locale; for `scanf' and friends, this
617 says to accept as valid only a number with all the proper grouping
618 separators in the right places. In the default "C" locale, numbers are
619 not grouped; but locales for specific countries will define the usual
620 conventions (i.e. separate thousands with `,' in the US locale).
622 * The pgrp functions have been regularized, slightly incompatibly but much
623 less confusingly. The core functions are now `getpgid' and `setpgid',
624 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
625 argument) and BSD `setpgrp' (identical to `setpgid') functions are
626 provided for compatibility. There is no longer an incompatible `getpgrp'
627 with an argument declared under _BSD_SOURCE; no BSD code uses it.
629 * The new header file <fts.h> and suite of functions simplify programs that
630 operate on directory trees. This code comes from 4.4 BSD.
632 * The resolver code has been updated from the BIND 4.9.5-P1 release.
633 Parts of the code were heavily modified by Ulrich Drepper to fit in the
634 NSS scheme used in glibc.
636 * There is a new malloc debugging hook `__memalign_hook'.
638 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
639 `unsigned int' in <sys/types.h>. These are for compatibility only and
640 their use is discouraged.
642 * The `-lmcheck' library to enable standard malloc debugging hooks is now
643 done differently, so that it works even without GNU ld.
645 * New function `euidaccess' checks allowed access to a file like `access',
646 but using the effective IDs instead of the real IDs.
648 * The time zone data files have been updated for the latest and greatest
649 local time conventions of the countries of the world.
651 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
652 see <dirent.h>.
654 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
655 for formatting floating-point numbers. They are provided only for
656 compatibility; new programs should use `sprintf' instead. There are
657 also equivalent function for the `long double' floating-point type and
658 all functions also exist in a reentrant form.
660 * The new auxiliary library `-lutil' from 4.4 BSD contains various
661 functions for maintaining the login-record files (primarily of use to
662 system programs such as `login'), and convenient functions for
663 allocating and initializing a pseudo-terminal (pty) device.
665 * Ulrich Drepper has contributed new support for System V style
666 shared memory and IPC on systems that support it.
668 * Ulrich Drepper has contributed several miscellaneous new functions found
669 in System V: The `hsearch' family of functions provide an effective
670 implementation of hash tables; `a64l' and `l64a' provide a very simple
671 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
672 number generator.
674 * Ulrich Drepper has contributed new reentrant counterparts for the
675 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
677 * Ulrich Drepper has contributed new, highly-optimized versions of several
678 string functions for the i486/Pentium family of processors.
680 * Ulrich Drepper has updated the Linux-specific code, based largely
681 on work done in Hongjiu Lu's version of GNU libc for Linux.
682 The GNU library now supports Linux versions 2.0.10 and later,
683 using the ELF object file format (i[3456]86-*-linux).
685 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
687 * David Mosberger-Tang and Richard Henderson have ported the C library
688 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
689 dynamic linking support for ELF/Alpha.
691 * Richard Henderson contributed several Alpha optimized assembler function
692 for arithmetic and string handling.
694 * Ulrich Drepper has contributed a new set of message catalog functions to
695 support multiple languages using the <libintl.h> interface, for use with
696 his new package GNU gettext. Translation volunteers have contributed
697 catalogs of the library's messages in Spanish, German, and Korean.
699 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
700 program and the `catgets' function for reading the catalog files it
701 creates. (The <libintl.h> interface is preferred; we include the
702 <nl_types.h> interface using `catgets' only for source compatibility with
703 programs already written to use it.)
705 * New header file <values.h> gives SVID-compatible names for <limits.h>
706 constants.
708 * Various new macros, declarations, and small header files for compatibility
709 with 4.4 BSD.
711 * New function `group_member' is a convenient way to check if a process has
712 a given effective group ID.
714 * When using GCC 2.7 and later, the socket functions are now declared in a
715 special way so that passing an argument of type `struct sockaddr_in *',
716 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
717 `struct sockaddr *' type, does not generate a type-clash warning.
719 * New function `error' declared in header file <error.h> is a convenient
720 function for printing error messages and optionally exiting; this is the
721 canonical function used in GNU programs. The new functions `err', `warn',
722 and friends in header file <err.h> are the canonical 4.4 BSD interface for
723 doing the same thing.
725 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
726 POSIX.2 `glob' function to do ~ and {...} expansion.
728 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
729 `clearenv' which is used in POSIX.9 is also available.
731 * New function `getsid' returns session ID number on systems that support it.
733 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
734 files <db.h> and <mpool.h> provide a rich set of functions for several
735 types of simple databases stored in memory and in files, and <ndbm.h> is
736 an old `ndbm'-compatible interface using the `db' functions. Link with
737 `-ldb' to get these functions.
739 * New macro `strdupa' copies a string like `strdup', but uses local stack
740 space from `alloca' instead of dynamic heap space from `malloc'.
742 * New function `strnlen' is like `strlen' but searches only a given maximum
743 number of characters for the null terminator. `stpncpy', `strndup' and
744 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
745 function.
747 * New function `statfs' in header <sys/statfs.h>.
749 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
750 provide convenient functions for operating on blocks of null-terminated
751 strings.
753 * A new suite of functions in <utmp.h> handle all the details of reading
754 and writing the utmp file.
756 * An implementation of the NIS/YP(tm) based NSS service was contributed by
757 Thorsten Kukuk.
759 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
760 completely POSIX compliant and also implemented the extended functionality
761 to handle alternate digit representation and alternate era date formats.
763 * Ulrich Drepper provided an implementation of the `strptime' function
764 defined in XPG4.2 which transforms a string into a `struct tm' value.
766 * Paul Eggert provided the tzselect shell script as part of the timezone
767 code. The shell script makes it easy to select the correct timezone
768 specification.
770 * The implementation of the malloc family of functions is completely replaced
771 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
772 The implementation uses the mmap function (if available) and it is
773 optimized for the use in multi threaded programs.
775 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
776 functions. This new functionality is usable by specifying a special
777 salt string and it is compatible with implementation on *BSD systems.
779 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
780 `getsubopt' to handle second level command line options, `bsd_signal'
781 to access BSD style `signal' functionality, the obsolete `regexp' style
782 expression matcher.
784 * the `lchown' function is available on system which support this
785 functionality.
787 * The implementation of the shadow password handling function was contributed
788 by Ulrich Drepper.
790 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
792 * POSIX.1g support was added. The <sys/select.h> header is available,
793 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
794 implementation of `getaddrinfo'.
795 \f
796 Version 1.09
798 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
800 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
801 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
803 * The new function `daemon' from 4.4 BSD is useful for server programs that
804 want to put themselves in the background.
806 * Joel Sherrill has contributed support for several standalone boards that
807 run without an operating system.
809 * `printf', `scanf' and friends now accept a `q' type modifier for long
810 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
812 * All of the code taken from BSD (notably most of the math and networking
813 routines) has been updated from the BSD 4.4-Lite release.
815 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
817 * The new functions `getdomainname' and `setdomainname' fetch or change the
818 YP/NIS domain name. These are system calls which exist on systems which
819 have YP (aka NIS).
821 * The time zone data files have been updated for the latest international
822 conventions.
824 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
825 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
826 \f
827 Version 1.08
829 * The C library now includes support for Sun RPC, from Sun's free
830 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
831 are included. (There is still no support for YP.)
833 * Tom Quinn has contributed a port of the C library to SGI machines running
834 Irix 4 (mips-sgi-irix4).
836 * The new `lockf' function is a simplified interface to the locking
837 facilities of `fcntl', included for compatibility.
839 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
841 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
843 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
844 compatibility.
846 * The error message printed by `assert' for a failed assertion now includes
847 the name of the program (if using GNU ld) and the name of the calling
848 function (with versions of GCC that support this).
850 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
852 * The library now includes the <sys/mman.h> header file and memory
853 management functions `mmap', `munmap', `mprotect', `msync', and
854 `madvise', on systems that support those facilities.
856 * The interface for `mcheck' has changed slightly: the function called to
857 abort the program when an allocation inconsistency is detected now takes
858 an argument that indicates the type of failure. The new function
859 `mprobe' lets you request a consistency check for a particular block at
860 any time (checks are normally done only when you call `free' or `realloc'
861 on a block).
863 * It is now possible to easily cross-compile the C library, building on one
864 system a library to run on another machine and/or operating system. All
865 you need to do is set the variable `HOST_CC' in `configparms' to the
866 native compiler for programs to run on the machine you are building on (a
867 few generator programs are used on Unix systems); set `CC' to the
868 cross-compiler.
870 * The new function `fexecve' (only implemented on the GNU system) executes
871 a program file given a file descriptor already open on the file.
872 \f
873 Version 1.07
875 * Brendan Kehoe has contributed most of a port to the DEC Alpha
876 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
878 * You can set the variable `libprefix' in `configparms' to specify a prefix
879 to be prepended to installed library files; this makes it easy to install
880 the GNU C library to be linked as `-lgnuc' or whatever.
882 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
883 copies a limited number of characters from a string, and returns the
884 address of the last character written.
886 * You no longer need to check for whether the installed `stddef.h' is
887 compatible with the GNU C library. configure now checks for you.
889 * You can now define a per-stream `fileno' function to convert the
890 stream's cookie into an integral file descriptor.
892 * ``malloc (0)'' no longer returns a null pointer. Instead, it
893 allocates zero bytes of storage, and returns a unique pointer which
894 you can pass to `realloc' or `free'. The behavior is undefined if
895 you dereference this pointer.
897 * The C library now runs on Sony NEWS m68k machines running either
898 NewsOS 3 or NewsOS 4.
900 * The new `syscall' function is a system-dependent primitive function
901 for invoking system calls. It has the canonical behavior on Unix
902 systems, including unreliable return values for some calls (such as
903 `pipe', `fork' and `getppid').
905 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
906 to `EAGAIN', which is the preferred name. On systems whose kernels
907 use two distinct codes, the C library now translates EWOULDBLOCK to
908 EAGAIN in every system call function.
909 \f
910 Version 1.06
912 * The GNU C Library Reference Manual is now distributed with the library.
913 `make dvi' will produce a DVI file of the printed manual.
914 `make info' will produce Info files that you can read on line using C-h i
915 in Emacs or the `info' program.
916 Please send comments on the manual to bug-glibc-manual@gnu.org.
918 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
920 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
922 * Jason Merrill has contributed a port to the Sequent Symmetry running
923 Dynix version 3 (i386-sequent-dynix).
925 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
926 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
928 * New function `memory_warnings' lets you arrange to get warnings when
929 malloc is running out of memory to allocate, like Emacs gives you.
931 * The C library now contains the relocating allocator used in Emacs 19 for
932 its editing buffers. This allocator (ralloc) minimizes allocation
933 overhead and fragmentation by moving allocated regions around whenever it
934 needs to. You always refer to a ralloc'd region with a "handle" (a
935 pointer to a pointer--an object of type `void **').
937 * There is a new `printf' format: `%m' gives you the string corresponding
938 to the error code in `errno'.
940 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
941 or `%[' conversion, but instead of filling in a fixed-sized buffer you
942 pass, the `a' modifier says to fill in a `char **' you pass with a
943 malloc'd string.
945 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
946 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
947 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
949 * `mkstemp' is a traditional Unix function to atomically create and open a
950 uniquely-named temporary file.
951 \f
952 Version 1.05
954 * The standard location for the file that says what the local timezone is
955 has changed again. It is now `/usr/local/etc/localtime' (or more
956 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
958 * The distribution no longer contains any files with names longer than 14
959 characters.
961 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
962 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
964 * New functions `ttyslot' and `syslog' from 4.4 BSD.
965 \f
966 Version 1.04
968 * The configuration process has changed quite a bit. The `configure'
969 script is now used just like the configuration scripts for other GNU
970 packages. The `sysdeps' directory hierarchy is much rearranged.
971 The file `INSTALL' explains the new scheme in detail.
973 * The header files no longer need to be processed into ANSI C and
974 traditional C versions. There is just one set of files to install, and
975 it will work with ANSI or old C compilers (including `gcc -traditional').
977 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
978 MIPS DECStation running Ultrix 4.
980 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
981 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
982 made itself into a shared library.
984 * Yet further improved support for the i386, running 4.3 BSD-like systems
985 (such as Mach 3 with the Unix single-server), or System V.
987 * New function `strncasecmp' to do case-insensitive string comparison
988 with limited length.
990 * New function `strsep' is a reentrant alternative to `strtok'.
992 * New functions `scandir' and `alphasort' for searching directories.
994 * New function `setenv' is a better interface to `putenv'.
996 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
997 function for traversing a directory tree.
999 * The GNU obstack package is now also part of the C library.
1000 The new function `open_obstack_stream' creates a stdio stream that
1001 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
1002 formatted output directly to an obstack.
1004 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
1005 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
1007 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
1009 * The new functions `strfry' and `memfrob' do mysterious and wonderful
1010 things to your strings.
1012 * There are some new test programs: test-fseek, testmb, and testrand.
1014 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
1015 These ports are not finished, but are a good starting place for really
1016 supporting those systems.
1018 * `/etc/localtime' is now the standard location for the file that says what
1019 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
1020 This follows the general principle that `/etc' is the place for all local
1021 configuration files.
1023 * The C library header files now use `extern "C"' when used by the C++
1024 compiler, so the C library should now work with C++ code.
1026 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
1027 bcmp, bzero, and ffs.
1029 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
1030 function which uses the `merge sort' algorithm, and is said to be
1031 significantly faster than the old GNU `qsort' function. Merge sort is
1032 now the standard `qsort' function. The new algorithm can require a lot
1033 of temporary storage; so, the old sorting function is called when the
1034 required storage is not available.
1036 * The C library now includes Michael Glad's Ultra Fast Crypt, which
1037 provides the Unix `crypt' function, plus some other entry points.
1038 Because of the United States export restriction on DES implementations,
1039 we are distributing this code separately from the rest of the C library.
1040 There is an extra distribution tar file just for crypt; it is called
1041 `glibc-VERSION-crypt.tar.Z', e.g. `glibc-1.04-crypt.tar.Z'. You can just
1042 unpack the crypt distribution along with the rest of the C library and
1043 build; you can also build the library without getting crypt. Users
1044 outside the USA can get the crypt distribution via anonymous FTP from
1045 ftp.uni-c.dk [129.142.6.74], or another archive site outside the U.S.
1047 * The code and header files taken from 4.4 BSD have been updated with the
1048 latest files released from Berkeley.
1049 \f
1050 ----------------------------------------------------------------------
1051 Copyright information:
1053 Copyright (C) 1992, 93, 94, 95, 96 Free Software Foundation, Inc.
1055 Permission is granted to anyone to make or distribute verbatim copies
1056 of this document as received, in any medium, provided that the
1057 copyright notice and this permission notice are preserved,
1058 thus giving the recipient permission to redistribute in turn.
1060 Permission is granted to distribute modified versions
1061 of this document, or of portions of it,
1062 under the above conditions, provided also that they
1063 carry prominent notices stating who last changed them.
1064 \f
1065 Local variables:
1066 version-control: never
1067 end: