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1 GNU C Library NEWS -- history of user-visible changes. 2012-1-27
2 Copyright (C) 1992-2009, 2010, 2011, 2012 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 2.16
10 * The following bugs are resolved with this release:
12 174, 350, 369, 411, 706, 887, 2074, 2541, 2547, 2548, 2550, 2551, 2552,
13 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678, 3335, 3440,
14 3768, 3866, 3868, 3976, 3992, 4026, 4108, 4596, 4822, 5077, 5461, 5805,
15 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794, 6884, 6890, 6894, 6895,
16 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135, 10140, 10153, 10210,
17 10254, 10346, 10545, 10716, 11174, 11322, 11365, 11451, 11494, 11521,
18 11959, 12047, 12340, 13058, 13525, 13526, 13527, 13528, 13529, 13530,
19 13531, 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13559, 13563,
20 13566, 13583, 13592, 13618, 13637, 13656, 13658, 13673, 13691, 13695,
21 13704, 13705, 13706, 13726, 13738, 13739, 13758, 13760, 13761, 13775,
22 13786, 13787, 13792, 13806, 13824, 13840, 13841, 13844, 13846, 13851,
23 13852, 13854, 13871, 13872, 13873, 13879, 13883, 13884, 13885, 13886,
24 13892, 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916,
25 13917, 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927,
26 13928, 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13970,
27 13973, 13979, 13983, 14027, 14033, 14034, 14040, 14049, 14053, 14055,
28 14064, 14080, 14083
30 * ISO C11 support:
32 + define static_assert
34 + do not declare gets
36 + declare at_quick_exit and quick_exit also for ISO C11
38 + aligned_alloc. NB: The code is deliberately allows the size parameter
39 to not be a multiple of the alignment. This is a moronic requirement
40 in the standard but it is only a requirement on the caller, not the
41 implementation.
43 + timespec_get added
45 + uchar.h support added
47 + CMPLX, CMPLXF, CMPLXL added
49 Implemented by Ulrich Drepper.
51 * Support for the IA-64 is removed and could live in ports.
53 * Remove support for anything but ELF binary format
55 * Checking versions of poll, ppoll added.
56 Implemented by Ulrich Drepper.
58 * More generic and 64-bit performance optimizations to math functions.
59 Implemented by Ulrich Drepper.
61 * New configure option --enable-obsolete-rpc makes the deprecated RPC
62 headers and functions available at compile time as they were before
63 version 2.14. This option will be removed at some time in the future
64 after the TI-RPC library becomes fully sufficient for the needs of
65 existing applications.
66 \f
67 Version 2.15
69 * The following bugs are resolved with this release:
71 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
72 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
73 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
74 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
75 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
76 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
77 13484, 13506, 13515, 13523, 13524, 13538, 13540
79 * New program pldd to list loaded object of a process
80 Implemented by Ulrich Drepper.
82 * Add nss_db support back to glibc. No more dependency on Berkeley db
83 and support for initgroups lookups.
84 Implemented by Ulrich Drepper.
86 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
87 Contributed by HJ Lu.
89 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
90 Contributed by HJ Lu.
92 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
93 on x86-32 and x86-64.
94 Contributed by Liubov Dmitrieva.
96 * Optimized strchr and strrchr for SSE on x86-32.
97 Contributed by Liubov Dmitrieva.
99 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
100 for x86-64 and x86-32.
101 Contributed by Liubov Dmitrieva.
103 * New interfaces: scandirat, scandirat64
104 Implemented by Ulrich Drepper.
106 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
107 Implemented by Ulrich Drepper.
109 * nscd now also caches the netgroup database.
110 Implemented by Ulrich Drepper.
112 * Integrate libm with gcc's -ffinite-math-only option.
113 Implemented by Ulrich Drepper.
115 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
116 to math functions. Implemented by Ulrich Drepper.
118 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
119 Implemented by Ulrich Drepper.
121 * New Linux interfaces: process_vm_readv, process_vm_writev
123 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
124 Implemented by Ulrich Drepper.
126 * Optimized nearbyint and strcasecmp for PPC.
127 Implemented by Adhemerval Zanella.
129 * New locales: bho_IN, unm_US, es_CU, ta_LK
130 \f
131 Version 2.14
133 * The following bugs are resolved with this release:
135 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
136 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
137 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
138 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
139 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
140 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
141 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
142 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
143 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
144 12795, 12811, 12813, 12814, 12841
146 * The RPC implementation in libc is obsoleted. Old programs keep working
147 but new programs cannot be linked with the routines in libc anymore.
148 Programs in need of RPC functionality must be linked against TI-RPC.
149 The TI-RPC implementation is IPv6 enabled and there are other benefits.
151 Visible changes of this change include (obviously) the inability to link
152 programs using RPC functions without referencing the TI-RPC library and the
153 removal of the RPC headers from the glibc headers.
154 Implemented by Ulrich Drepper.
156 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
157 syncfs, setns, sendmmsg
159 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
160 yue_HK, lij_IT, mhr_RU
162 * New encodings: CP770, CP771, CP772, CP773, CP774
164 * New program sotruss to trace calls through PLTs
165 Implemented by Ulrich Drepper.
167 * The malloc hook implementation is marked deprecated and will be removed
168 from the default implementation in the next version. The design never
169 worked ever since the introduction of threads. Even programs which do
170 not create threads themselves can use multiple threads created internally.
171 \f
172 Version 2.13
174 * The following bugs are resolved with this release:
176 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
177 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
178 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
179 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
180 12378, 12394, 12397
182 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
184 * POWER7 optimizations: memset, memcmp, strncmp
186 * New optimized string functions for x86-64: strnlen (SSE2),
187 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
188 Implemented by Ulrich Drepper.
189 \f
190 Version 2.12
192 * The following bugs are resolved with this release:
194 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915, 10918,
195 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001, 11007,
196 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070, 11093,
197 11115, 11120, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
198 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
199 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
200 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
201 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
203 * New interfaces: pthread_getname_np, pthread_setname_np
205 * New Linux interface: recvmmsg
207 * STT_GNU_IFUNC implemented for Sparc by David Miller.
209 * The dynamic linker now recognizes supported ABI versions from the
210 EI_ABIVERSION field in the ELF header.
211 Implemented by Ulrich Drepper.
213 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
214 will not be used to fill in password fields in the passwd.byname replies.
215 Instead it is used to synthesize the shadow.byname table, should it be
216 missing. This is a useful mode in some installations involving Solaris.
217 Implemented by Ulrich Drepper.
219 * New locales: kok_IN, sq_MK, cv_RU
220 \f
221 Version 2.11
223 * The following bugs are resolved with this release:
225 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
226 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
227 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
228 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
229 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
230 10789, 10817, 10823, 10840, 10847
232 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
233 mkostemps64
234 Implemented by Ulrich Drepper.
236 * Checking version of longjmp added that fails if an uninitialized stack
237 frame would be created. Implemented by Ulrich Drepper.
239 * STT_GNU_IFUNC is now supported in static executables.
240 Implemented by H.J. Lu.
242 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
244 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
245 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
246 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
247 Contributed by H.J. Lu.
249 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
250 Implemented by Ulrich Drepper.
252 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
253 strstr, strcasestr.
254 Contributed by H.J. Lu.
256 * Support for fma instruction in AVX on x86-64.
257 Implemented by H.J. Lu and Ulrich Drepper.
259 * AVX support in x86-64 auditing support in ld.so.
260 Implemented by H.J. Lu.
262 * STB_GNU_UNIQUE support added.
263 Implemented by Ulrich Drepper.
265 * Implement second fallback mode for optimized DNS lookup for even more
266 broken environments. If two requests from the same port are not
267 handled correctly close the socket and open a new one before sending
268 the second request. The 'single-request-reopen' option in /etc/resolv.conf
269 can be used to select this mode right away, instead of rediscovering the
270 necessity is every process again.
271 Implemented by Ulrich Drepper.
273 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
274 Implemented by Adam Tkac.
276 * Optimized iconv conversions for S390x.
277 Implemented by Andreas Krebbel.
279 * Using condvars with PI mutexes is now more efficient due to kernel
280 support for requeueing to PI futexes. NPTL support added for x86-64.
281 Implemented by Ulrich Drepper.
283 * New locales: ps_AF, my_MM
284 \f
285 Version 2.10
287 * The following bugs are resolved with this release:
289 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
290 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
291 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
292 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
293 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
295 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
296 Implemented by Ulrich Drepper.
298 * New Linux interfaces: accept4, fallocate, fallocate64.
299 Implemented by Ulrich Drepper.
301 * Correct declarations of string function when used in C++ code. This
302 could lead to compile errors for invalid C++ code.
304 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
305 now in POSIX.
307 * New POSIX 2008 interface: psiginfo
308 Implemented by Ulrich Drepper.
310 * New ISO C++1x interfaces: quick_exit, at_quick_exit
311 Implemented by Ulrich Drepper.
313 * Support for selecting between multiple function definitions at runtime
314 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
316 * The libcrypt library can now use the hash function implementations in
317 NSS. Implemented by Ulrich Drepper.
319 * The malloc implementation can be compiled to be less memory efficient
320 but higher performing in multi-threaded programs.
321 Implemented by Ulrich Drepper.
323 * New locales: nan_TW@latin, ks_IN
325 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
326 Implemented by Ulrich Drepper.
328 * Extended printf hook support. It is possible to use user-defined types
329 and extend existing format specifiers.
330 Implemented by Ulrich Drepper.
332 * Handling for group shadow files has been added.
333 Implemented by Ulrich Drepper.
335 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
336 servers (the case, e.g., for some people using the built-in DNS
337 server in ADSL modems/routers). There is a once-per-process timeout
338 in case of a broken server. To avoid it, users can run nscd or put
339 'options single-request' in /etc/resolv.conf.
340 Implemented by Ulrich Drepper.
341 \f
342 Version 2.9
344 * The following bugs are resolved with this release:
346 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
347 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
348 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
349 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
350 6968, 6974, 6980, 6995, 7008, 7009, 7029
352 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
353 up at the same time. Implemented by Ulrich Drepper.
355 * TLS descriptors for LD and GD on x86 and x86-64.
356 Implemented by Alexandre Oliva.
358 * getaddrinfo now handles DCCP and UDPlite.
359 Implemented by Ulrich Drepper.
361 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
362 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
363 Implemented by Ulrich Drepper.
365 * New implementation of memmem, strstr, and strcasestr which is O(n).
366 Implemented by Eric Blake.
368 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
370 * Implement "e" option for popen to open file descriptor with the
371 close-on-exec flag set. Implemented by Ulrich Drepper.
373 * Implement "b" mode for fmemopen. In this mode writes writes don't
374 implicitly add a NUL byte and seeks from the end of the buffer really
375 use the buffer end, not the string length as the basis.
376 Implemented by Ulrich Drepper.
378 * Many functions, exported and internal, now atomically set the close-on-exec
379 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
381 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
382 Sinhala)
383 Implemented by Pravin Satpute.
385 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
386 \f
387 Version 2.8
389 * The following bugs are resolved with this release:
391 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
392 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
393 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
394 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
395 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
396 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
397 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
399 * New locales: bo_CN, bo_IN, shs_CA.
401 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
403 * Sorting rules for some Indian languages (Devanagari and Gujarati).
404 Implemented by Pravin Satpute.
406 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
408 * nscd caches now all timeouts for DNS entries
409 Implemented by Ulrich Drepper.
411 * nscd is more efficient and wakes up less often.
412 Implemented by Ulrich Drepper.
414 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
415 vdprintf, and obstack_vprintf.
416 Implemented by Jakub Jelinek.
418 * Faster memset for x86-64.
419 Implemented by Harsha Jagasia and H.J. Lu.
421 * Faster memcpy on x86.
422 Implemented by Ulrich Drepper.
424 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
425 Implemented by Ulrich Drepper.
427 * Faster sqrt and sqrtf implemention for some PPC variants.
428 Implemented by Stephen Munroe.
429 \f
430 Version 2.7
432 * The following bugs are resolved with this release:
434 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
435 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
436 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
437 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
438 5071, 5103, 5104, 5112, 5113, 5184, 5186
440 * More checking functions: fread, fread_unlocked, open*, mq_open.
441 Implemented by Jakub Jelinek and Ulrich Drepper.
443 * Extend fortification to C++. Implemented by Jakub Jelinek.
445 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
446 by not recognizing 'a' as a modifier when those specs are requested.
447 Implemented by Jakub Jelinek.
449 * PPC optimizations to math and string functions.
450 Implemented by Steven Munroe.
452 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
453 options to be passed. Implemented by Ulrich Drepper.
455 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
457 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
458 Implemented by Ulrich Drepper.
460 * Handle private futexes in the NPTL implementation.
461 Implemented by Jakub Jelinek and Ulrich Drepper.
463 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
464 Implemented by Roland McGrath and Ulrich Drepper.
466 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
468 * SHA-256 and SHA-512 based password encryption.
469 Implemented by Ulrich Drepper.
471 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
472 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
473 yo_NG.
475 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
476 Implemented by Ulrich Drepper.
477 \f
478 Version 2.6
480 * The following bugs are resolved with this release:
482 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
483 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
484 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
485 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
486 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
487 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
488 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
489 4702, 4858
491 * New Linux interfaces: epoll_pwait, sched_getcpu.
493 * New generic interfaces: strerror_l.
495 * nscd can now cache the services database. Implemented by Ulrich Drepper.
496 \f
497 Version 2.5
499 * The following bugs are resolved with this release:
501 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
502 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
503 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
504 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
505 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
506 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
507 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
508 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
509 3225, 3251, 3252, 3253, 3273
511 * For Linux, the sorting of addresses returned by getaddrinfo now also
512 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
513 Implemented by Ulrich Drepper.
515 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
516 Implemented by Ulrich Drepper.
518 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
520 * New iconv module for MIK. Contributed by Alexander Shopov.
522 * For sites with broken group and/or passwd database, the auto-propagate
523 option of nscd can prevent creating ID lookup entries from the results
524 of a name lookup and vice versa. This usually is no problem but some
525 site might have problems with the default behavior.
526 Implemented by Ulrich Drepper.
528 * Iterating over entire database in NIS can be slow. With the
529 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
530 to trade time for memory. The entire database will be read at once.
531 Implemented by Ulrich Drepper.
533 * The interfaces introduced in RFC 3542 have been implemented by
534 Ulrich Drepper.
536 * Support for the new ELF hash table format was added by Ulrich Drepper.
538 * Support for priority inheritance mutexes added by Jakub Jelinek and
539 Ulrich Drepper.
541 * Support for priority protected mutexes added by Jakub Jelinek.
543 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
544 or_IN, csb_PL, fy_NL, sr_ME.
545 \f
546 Version 2.4
548 * More overflow detection functions.
550 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
551 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
553 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
554 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
555 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
556 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
557 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
558 by Masahide Washizawa.
560 * It is now possible to install audit libraries for the dynamic linker using
561 LD_AUDIT. Implemented by Ulrich Drepper.
563 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
564 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
565 For a libc and libpthread that works well on Linux 2.4 kernels, we
566 recommend using the stable 2.3 branch.
568 * The new function open_wmemstream acts like open_memstream,
569 but uses a wchar_t wide character buffer.
571 * The new function ppoll is an improved version of poll, similar to pselect.
573 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
574 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
575 renameat, unlinkat, linkat, symlinkat, readlinkat.
577 * New Linux kernel system calls: unshare,
578 inotify_init, inotify_add_watch, inotify_rm_watch.
580 * The euidaccess function is now also known by the alias eaccess,
581 for compatibility with some other systems.
583 * Timezone data updated to 2006b version.
584 \f
585 Version 2.3.6
587 * The following bugs are resolved with this release:
589 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
590 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
591 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
592 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
593 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
594 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
596 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
598 * As of this release, GCC 4 can be used to compile the C Library.
600 * Timezone data updated to 2005m version.
601 \f
602 Version 2.3.5
604 * The following bugs are resolved with this release:
606 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
607 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
608 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
609 777, 787, 821, 822, 823, 825
611 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
612 \f
613 Version 2.3.4
615 * Support for RFC 3678. Real implementations exist only for Linux so far.
616 Implemented by Ulrich Drepper.
618 * nscd can now cache entries persistently. Expiring entries are reloaded.
619 For speedups the cache can be shared in memory with client processes.
620 Implemented by Ulrich Drepper.
622 * nscd can now perform SELinux checks.
623 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
625 * getaddrinfo queries are now cached. Canonical name lookup is performed
626 efficiently.
627 Implemented by Ulrich Drepper.
629 * The nothrow function attribute is used when headers are used by gcc when
630 compiling C code. This can avoid significant amounts of exception
631 handling data.
633 * The malloc functions perform more error checking and are stricter when
634 it comes to reacting on errors. The default action is to terminate
635 the process after showing an error message. Implemented by Ulrich Drepper.
637 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
638 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
640 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
641 namespaces using the new function dlmopen(). This feature is of course,
642 like most other dynamic loading functionality, not available in statically
643 linked applications. Implemented by Ulrich Drepper.
645 * Low-overhead boundary checking variants of string and some stdio functions
646 were added. These are to be used in conjunction with a gcc patch by
647 Jakub Jelinek which adds calls to these functions if possible.
648 Implemented by Jakub Jelinek and Ulrich Drepper.
650 * Old code for several operating systems and machine architectures that
651 have not been in working condition in a long time have been removed from
652 the main source tree maintained by the GNU C Library's maintainers.
653 These files are now reside in the separate `ports' source module
654 that is usable as an add-on when building the library.
655 \f
656 Version 2.3.3
658 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
659 interrogate the dynamic linker, compatible with the Solaris interface.
661 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
662 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
664 * getifaddrs now uses the netlink interface on Linux to get its information.
665 Implemented by Thorsten Kukuk.
667 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
668 Implemented by Ulrich Drepper.
670 * support for non-executable stacks on x86 has been added. Changes mostly
671 by Roland McGrath.
673 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
674 and Ulrich Drepper.
676 * getaddrinfo now performs destination address selection according to
677 RFC 3484.
678 \f
679 Version 2.3.2
681 * Thread-safe interfaces for many functions that access locale data
682 were added in version 2.3, but these features were omitted from NEWS.
683 Many functions have variants with an `_l' suffix that take a `locale_t'
684 object as a parameter rather than consulting the current locale.
685 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
686 create and maintain `locale_t' objects. Additionally, the new function
687 `uselocale' sets "the current locale" (as used by functions not so
688 parameterized) set for an individual thread. These features were added
689 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
691 * The functions getresuid, getresgid, setresuid, and setresgid, which
692 have long been available on Linux, are now declared in <unistd.h>
693 and are now also available on the Hurd.
695 * ELF thread-local storage support (TLS) now works on x86-64.
697 * The new dynamic string token $LIB is expanded in shared library names.
698 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
700 * Aldy Hernandez contributed complete software floating point support for
701 PowerPC machines with no FPU.
703 * fexecve is implemented on Linux.
705 * The `btowc' function should work at least twice as fast due to
706 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
708 * With approriate thread add-ons cancelable functions are now implemented
709 in libc.so as well. No need to call the function in libpthread. This
710 change allowed to finally disable the incorrect and expensive handling
711 of weak definition in ld.so.
713 * Yet more PLT entries in libc.so have been removed. We finally arrived
714 at the bare minimum. Startup times improved appropriately.
716 * Support for the new Linux/x86 system call interface was added. The
717 AT_SYSINFO auxiliary vector entry is recognized and handled.
718 \f
719 Version 2.3
721 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
722 charsets.
724 * iconv (the program and the interface) now accepts empty names (excluding
725 options like //TRANSLIT) to mean "use charset of current locale".
727 * localedef can now transliterate characters in strings which are not in
728 the provided charmap. The information from the input locale is used.
730 * Prelinking support was added for ELF targets. This requires additional
731 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
733 * Read-only stdio streams now use mmap to speed up operation by eliminating
734 copying and buffer underflows. To use add 'm' to the mode string of
735 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
737 * The malloc functions were completely rewritten by Wolfram Gloger based
738 on Doug Lea's malloc-2.7.0.c.
740 * Isamu Hasegawa contributed a completely new and POSIX-conformant
741 implementation of regex.
743 * Bruno Haible upgraded the iconv and locale implementation to support
744 Unicode 3.2.
746 * Contents of the LC_* and LANG environment variables in the CEN style are
747 not recognized anymore. It never was used. Change by Ulrich Drepper.
749 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
750 thread-local storage (TLS) ABI on some platforms.
751 Changes by Ulrich Drepper. SH support by Kaz Kojima.
753 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
754 EUC-JISX0213, and TSCII.
756 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
757 BSD-compatible interface for getting all network interface addresses.
758 Implementation for IPv4 by Roland McGrath.
760 * Loading of locale data is faster due to the introduction of a locale
761 archive. Implemented by Roland McGrath and Ulrich Drepper.
763 * Startup times are significantly reduced by not using exported functions
764 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
765 and Ulrich Drepper.
767 * Steven Munroe contributed a port to PowerPC64/Linux.
768 \f
769 Version 2.2.6
771 * The Hurd now uses the GNU libio implementation of stdio rather than the
772 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
774 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
775 with the same behavior as the Linux system call of the same name.
776 \f
777 Version 2.2.5
779 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
780 128-bit long double format.
782 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
783 IBM1161, and IBM1162 charsets.
785 * Andreas Jaeger contributed a port to x86-64/Linux.
787 * Peter Bruin contributed a port to PowerPC/Hurd.
789 * libc functions using I/O streams now can handle wide-oriented streams
790 as well.
792 * optimizations in the dynamic linker. Binaries created by recent binutils
793 versions start up quicker due to reduced time spent on relocations.
795 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
796 \f
797 Version 2.2.4
799 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
800 asinh, atanh, j0 for the 128-bit long double format.
802 * Bruno Haible updated all the code handling Unicode in some form to
803 support Unicode 3.1.
805 * Speed of regex for single-byte locales is back to previous levels.
806 Patch by Isamu Hasegawa.
808 * Alpha, SPARC, and IA-64 now also using floating stacks.
810 * Startup time of internationalized applications greatly improved through
811 iconv cache. Use iconvconfig to generate the cache file.
812 Contributed by Ulrich Drepper.
814 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
815 severe performance problems. Patch by David Mosberger.
817 * The Hurd port got a lot more functionality like AIO, various stdio
818 extensions, etc. Mainly done by Roland McGrath.
820 * mtrace can now lookup symbols in shared libraries.
821 \f
822 Version 2.2.3
824 * Intel's IA-64 math library is largely integrated. It provides fast and
825 accurate implementatations for most basic and standard math functions
826 in float, double, and long double format.
828 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
829 and asin for the 96-bit long double format and asin, log, tan for the
830 128-bit long double format.
832 * The beginning of a last-bit accurate math library by IBM Haifa were added.
833 The basic double functions exist today. Contributed by Abraham Ziv
834 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
835 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
837 * An asynchronous name lookup library was added. The interface is designed
838 after POSIX AIO. The proposal was circulated beforehand to get comments.
839 No negative ones came in. Implemented by Ulrich Drepper.
841 * Port to S390/64bit contributed by Martin Schwidefsky
842 <schwidefsky@de.ibm.com>.
844 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
845 of functions for Linux/IA-64.
847 * The RPC code is now thread safe. Threads can now use the same service
848 of different services at the same time. Patch by Eric Norum
849 <eric.norum@usask.ca> with some help by Ulrich Drepper.
851 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
852 family of functions for Linux/S390.
854 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
855 of functions for Linux/x86.
857 * Port to Linux/CRIS contributed by Axis Communications.
858 \f
859 Version 2.2.2
861 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
862 we can now check for namespace violations and missing declarations. The
863 result is that almost all headers are now Unix-compliant (as defined in
864 the upcoming XPG6). The negative side is that some programs might need
865 corrections, too, if they depend on the incorrect form of the headers in
866 previous versions which defined too many symbols and included too many
867 other headers.
869 * regex now handles multibyte character sets correctly.
870 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
872 * iconv (the program) does now conform to the upcoming XPG6 and handles
873 charmaps. Instead of the charset names the path of charmaps can be
874 provided and the conversion happens based on this data.
875 Contributed by Ulrich Drepper.
877 * The locale program now provides detailed information about the installed
878 locales. While
880 locale -a
882 only lists the names of the supported locales
884 locale -a --verbose
886 provides details such as country, language, and codeset name.
887 Contributed by Ulrich Drepper.
888 \f
889 Version 2.2.1
891 * The gencat program now parses the input file according to the charset
892 selected by the LC_CTYPE category. This is important for stateful
893 character sets. To make generating catalogs easier there is a way
894 to overwrite the charset selected by the locale: before the first
895 message or $ quote line the catalog can contain a line like
897 $ codeset=ISO-8859-2
899 to select the charset (ISO-8859-2 in this case).
901 Implemented by Shinya Hanataka and Ulrich Drepper.
903 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
904 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
905 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
907 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
908 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
910 * The LANGUAGE environment variable is now ignored unless the locale is
911 changed from the default "C" locale.
913 * The usual bug fixes.
914 \f
915 Version 2.2
917 * Greg McGary added runtime support for bounds checking using gcc's
918 new -fbounded-pointers option. ix86 target is complete. PowerPC
919 is in progress.
921 * Thorsten Kukuk added secure mode support to nscd.
923 * The Berkeley db libraries have been removed.
925 Related, the nss_db module is now in a separate package since it
926 obviously requires a database library being available.
928 * Wide character I/O streams implemented by Ulrich Drepper.
930 * Functions from the extended socket API added by Ulrich Drepper.
932 * Functions feenableexcept and fedisableexcept to control the
933 behaviour of individual exceptions have been added by Andreas Jaeger.
935 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
937 * The resolver code has been updated from bind 8.2.3-T5B which supports
938 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
939 and Mark Kettenis.
941 This change could in some situations effect backward compatibility. Since
942 now `_res' is a thread-local instead of a global variable, modifying it
943 in one thread does not have any effect in other threads.
945 The resolver library was also extended to allow IPv6 as the transport
946 protocol for the requests. This work was done by Stig Venaas.
948 * Compatibility code for K&R C compilers has been removed from the
949 header files. A ISO C compiler is needed to use the library
950 (conforming to either C89 or C99 standard).
952 * Complete rewrite of the localedef program to support multibyte character
953 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
954 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
955 Implemented by Ulrich Drepper.
957 Bruno Haible significantly improved the generation and use of the data
958 structures for the wide character tables.
960 * Plural handling in gettext implemented by Ulrich Drepper.
962 * The utmp daemon has been removed.
964 * The port to MIPS-Linux has been finished by Andreas Jaeger.
966 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
967 and Yutaka Niibe.
969 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
971 * POSIX barriers implemented by Kaz Kylheku.
973 * POSIX spawn function family implemented by Ulrich Drepper.
975 * POSIX spinlocks are now available.
977 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
979 * the configure option --enable-kernel=X.Y.Z allows to strip out
980 compatibility for kernel versions before X.Y.Z. This is currently only
981 implemented for Linux.
983 * the sockaddr_in6 structure changed. The IPv6 working group added a new
984 field sin6_scope_id. This means that all programs using IPv6 should be
985 recompiled. Don't expect binary compatibility with previous glibc
986 versions.
988 * various conversion modules for IBM character sets contributed by
989 Masahide Washizawa.
991 * IA-64 port by Jes Sorensen and HJ Lu.
993 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
994 Compiling the GNU C Library for Linux/ia64
995 ******************************************
997 Please refer to the file INSTALL in the same directory as you found
998 this file for general information about configuring and compiling
999 glibc.
1001 For general inquiries about glibc under Linux/ia64 please use the
1002 following mailing list linux-ia64@linuxia64.org or one of the relevant
1003 glibc mailing lists.
1005 Recommended Tools for Compilation
1006 =================================
1008 In order for glibc-2.2 to build correctly on the ia64 you need at
1009 least the following versions of the GNU tools (the :
1011 * The Cygnus toolchain snapshot for the ia64 as of August 4
1012 including the provided set of patches. It is however recommend
1013 you use the October 24 toolchain snapshot or a more recent version.
1015 OR alternatively you can try the following (the Cygnus toolchain is
1016 the recommended solution):
1018 * GCC and binutils, GAS and GNU LD out of CVS from
1019 sources.redhat.com as of August 28, 2000 or later. The CVS tree
1020 may require special patches to work properly on the ia64.
1022 Configuring and compiling GNU Libc for Linux/ia64
1023 =================================================
1025 The library requires Linux kernel version 2.4.0-test4-000728 or
1026 later to funtion properly. Besides that it support for debug libraries
1027 is currently untested. Hence the following options
1028 are required for configuring the library:
1030 --disable-debug --enable-kernel=2.4.0
1032 It is also important that you make sure the library picks up the
1033 appropriate kernel header files, if you do not have recent enough
1034 kernel headers in /usr/src/linux/include, you should use the
1035 --with-headers=<path> option to specify the location.
1037 As an example I personally use the following options to configure
1038 the library:
1040 --disable-debug
1041 --disable-cvs
1042 --enable-kernel=2.4.0
1043 --host=ia64-linux
1044 --enable-add-ons=yes
1045 --prefix=/usr
1046 --with-headers=/home/jes/linux/include
1049 Good luck
1051 Jes Sorensen <jes@linuxcare.com>,
1052 November 14th, 2000
1053 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1054 \f
1055 Version 2.1.3
1057 * bug fixes
1059 \f
1060 Version 2.1.2
1062 * bug fixes
1064 \f
1065 Version 2.1.1
1067 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1069 * New xdr functions are added; some rpc functions are now 64bit clean.
1071 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1073 * Fixed known incompatibilities with glibc 2.0.
1075 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1077 * Optimized a number of functions (especially the ELF dynamic loader).
1079 * Update timezone data files.
1081 * lots of charmaps corrections
1083 * some new locale definitions and charmaps
1085 \f
1086 Version 2.1
1088 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1089 conform to POSIX member type requirements. Symbol versions have been
1090 adjusted as needed within the library, and for direct use by applications,
1091 but there is potential for problems if third-party libraries use
1092 struct timeval as part of their interface. This does not present
1093 a problem for X and other "essential" system libraries.
1095 * An additional locale model to support C++ Standard Library locale
1096 model and probably more was implemented by Ulrich Drepper.
1098 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1099 symbol level.
1101 * Miles Bader provided the `argp' function family to support hierachical
1102 command line argument parsing, layered on top of getopt.
1104 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1106 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1107 numbers.
1109 * scanf recognizes the %a and %A format for scanning floating point numbers.
1111 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1112 information and interfaces for the available integer types.
1114 * about 130 new math functions were added to implement the ISO C9x math
1115 library.
1117 * the new header <complex.h> contains definitions of the complex math
1118 functions from ISO C 9X.
1120 * the new header <tgmath.h> defines generic macros to use complex or
1121 real valued functions.
1123 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1125 * Andreas Jaeger provided a test suite for the math library.
1127 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1129 * Ulrich Drepper added character set conversion functions (iconv).
1131 * Optimized string functions have been added.
1133 * The localedata addon is now part of glibc.
1135 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1137 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1138 daemon for NSS (nscd).
1140 Missing a better place here are some numbers on improvements. Under
1141 Linux 2.1.125 un-tar-ing the kernel sources takes
1143 user system wall
1145 using local files 12.19s 6.88s 22.91s
1147 using NIS 13.92s 8.91s 26.34s
1149 using NIS & nscd 10.37s 7.34s 25.30s
1151 using NIS+ 27.57s 30.37s 640.46s
1153 using NIS+ & nscd 10.25s 7.83s 26.51s
1155 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1157 Keep in mind that non-namelookup related operations dominate above times.
1158 It was just a common complain that using NIS+ unpacking the kernel is
1159 horribly slow.
1161 [1] The old nscd implementation is not available anymore since it was
1162 distributed with glibc up to version 2.0.98 and thus is now replaced.
1164 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1166 * Mark Kettenis provided a Hesiod NSS module.
1168 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1169 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1171 * rcmd can now handle netgroups (Dick Streefland).
1173 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1174 Bambrough.
1176 * Support for the IPv6 protocol has been added to the socket API, as per the
1177 latest draft standards.
1179 * Support for Linux 2.2 has been added.
1181 * Interface changes relative to the latest 2.0.x release:
1182 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1183 addseverity NEW: Unix98
1184 alphasort64 NEW: LFS
1185 argp_err_exit_status NEW: argp, GNU ext
1186 argp_error NEW: argp, GNU ext
1187 argp_failure NEW: argp, GNU ext
1188 argp_help NEW: argp, GNU ext
1189 argp_parse NEW: argp, GNU ext
1190 argp_program_bug_address NEW: argp, GNU ext
1191 argp_program_version NEW: argp, GNU ext
1192 argp_program_version_hook NEW: argp, GNU ext
1193 argp_state_help NEW: argp, GNU ext
1194 argp_usage NEW: argp, GNU ext
1195 authdes_create NEW: Secure RPC
1196 authdes_getucred NEW: Secure RPC
1197 authdes_pk_create NEW: Secure RPC
1198 backtrace NEW: GNU ext.
1199 backtrace_symbols NEW: GNU ext.
1200 backtrace_symbols_fd NEW: GNU ext.
1201 cacos NEW: ISO C 9x
1202 cacosf NEW: ISO C 9x
1203 cacosh NEW: ISO C 9x
1204 cacoshf NEW: ISO C 9x
1205 cacoshl NEW: ISO C 9x
1206 cacosl NEW: ISO C 9x
1207 capget NEW: kernel
1208 capset NEW: kernel
1209 carg NEW: ISO C 9x
1210 cargf NEW: ISO C 9x
1211 cargl NEW: ISO C 9x
1212 casin NEW: ISO C 9x
1213 casinf NEW: ISO C 9x
1214 casinh NEW: ISO C 9x
1215 casinhf NEW: ISO C 9x
1216 casinhl NEW: ISO C 9x
1217 casinl NEW: ISO C 9x
1218 catan NEW: ISO C 9x
1219 catanf NEW: ISO C 9x
1220 catanh NEW: ISO C 9x
1221 catanhf NEW: ISO C 9x
1222 catanhl NEW: ISO C 9x
1223 catanl NEW: ISO C 9x
1224 cbc_crypt NEW: Secure RPC
1225 ccos NEW: ISO C 9x
1226 ccosf NEW: ISO C 9x
1227 ccosh NEW: ISO C 9x
1228 ccoshf NEW: ISO C 9x
1229 ccoshl NEW: ISO C 9x
1230 ccosl NEW: ISO C 9x
1231 cexp NEW: ISO C 9x
1232 cexpf NEW: ISO C 9x
1233 cexpl NEW: ISO C 9x
1234 cimag NEW: ISO C 9x
1235 cimagf NEW: ISO C 9x
1236 cimagl NEW: ISO C 9x
1237 clearerr_locked REMOVED
1238 clntunix_create NEW: sunrpc ext
1239 clog NEW: ISO C 9x
1240 clog10 NEW: ISO C 9x
1241 clog10f NEW: ISO C 9x
1242 clog10l NEW: ISO C 9x
1243 clogf NEW: ISO C 9x
1244 clogl NEW: ISO C 9x
1245 conj NEW: ISO C 9x
1246 conjf NEW: ISO C 9x
1247 conjl NEW: ISO C 9x
1248 cpow NEW: ISO C 9x
1249 cpowf NEW: ISO C 9x
1250 cpowl NEW: ISO C 9x
1251 cproj NEW: ISO C 9x
1252 cprojf NEW: ISO C 9x
1253 cprojl NEW: ISO C 9x
1254 creal NEW: ISO C 9x
1255 crealf NEW: ISO C 9x
1256 creall NEW: ISO C 9x
1257 creat64 NEW: LFS
1258 csin NEW: ISO C 9x
1259 csinf NEW: ISO C 9x
1260 csinh NEW: ISO C 9x
1261 csinhf NEW: ISO C 9x
1262 csinhl NEW: ISO C 9x
1263 csinl NEW: ISO C 9x
1264 csqrt NEW: ISO C 9x
1265 csqrtf NEW: ISO C 9x
1266 csqrtl NEW: ISO C 9x
1267 ctan NEW: ISO C 9x
1268 ctanf NEW: ISO C 9x
1269 ctanh NEW: ISO C 9x
1270 ctanhf NEW: ISO C 9x
1271 ctanhl NEW: ISO C 9x
1272 ctanl NEW: ISO C 9x
1273 des_setparity NEW: Secure RPC
1274 ecb_crypt NEW: Secure RPC
1275 endutxent NEW: Unix98
1276 exp10 NEW: ISO C 9x
1277 exp10f NEW: ISO C 9x
1278 exp10l NEW: ISO C 9x
1279 exp2 NEW: ISO C 9x
1280 exp2f NEW: ISO C 9x
1281 exp2l NEW: ISO C 9x
1282 fattach NEW: STREAMS
1283 fdetach NEW: STREAMS
1284 fdim NEW: ISO C 9x
1285 fdimf NEW: ISO C 9x
1286 fdiml NEW: ISO C 9x
1287 feclearexcept NEW: ISO C 9x
1288 fegetenv NEW: ISO C 9x
1289 fegetexceptflag NEW: ISO C 9x
1290 fegetround NEW: ISO C 9x
1291 feholdexcept NEW: ISO C 9x
1292 feof_locked REMOVED
1293 feraiseexcept NEW: ISO C 9x
1294 ferror_locked REMOVED
1295 fesetenv NEW: ISO C 9x
1296 fesetexceptflag NEW: ISO C 9x
1297 fesetround NEW: ISO C 9x
1298 fetestexcept NEW: ISO C 9x
1299 feupdateenv NEW: ISO C 9x
1300 fflush_locked REMOVED
1301 ffsl NEW: GNU ext.
1302 ffsll NEW: GNU ext.
1303 fgetpos64 NEW: LFS
1304 fgets_unlocked NEW: GNU ext.
1305 fileno_locked REMOVED
1306 fma NEW: ISO C 9x
1307 fmaf NEW: ISO C 9x
1308 fmal NEW: ISO C 9x
1309 fmax NEW: ISO C 9x
1310 fmaxf NEW: ISO C 9x
1311 fmaxl NEW: ISO C 9x
1312 fmin NEW: ISO C 9x
1313 fminf NEW: ISO C 9x
1314 fminl NEW: ISO C 9x
1315 fmtmsg NEW: Unix98
1316 fopen64 NEW: LFS
1317 fputc_locked REMOVED
1318 fputs_unlocked NEW: GNU ext.
1319 fread_unlocked NEW: GNU ext.
1320 freopen64 NEW: LFS
1321 fseeko NEW: Unix98
1322 fsetpos64 NEW: LFS
1323 fstatfs64 NEW: LFS
1324 fstatvfs NEW: Unix98
1325 fstatvfs64 NEW: LFS
1326 ftello NEW: Unix98
1327 ftello64 NEW: LFS
1328 ftruncate64 NEW: LFS
1329 ftw64 NEW: LFS
1330 fwrite_unlocked NEW: GNU ext.
1331 gai_strerror NEW: IPv6
1332 gamma_r REMOVED
1333 gammaf_r REMOVED
1334 gammal_r REMOVED
1335 getchar_locked REMOVED
1336 getdate NEW: Unix98
1337 getdate_err NEW: Unix98
1338 getdate_r NEW: GNU ext.
1339 getmsg NEW: STREAMS
1340 getnameinfo NEW: IPv6
1341 getnetname NEW: Secure RPC
1342 getpmsg NEW: STREAMS
1343 getpt NEW: Unix98 PTY
1344 getrlimit64 NEW: LFS
1345 getutxent NEW: Unix98
1346 getutxid NEW: Unix98
1347 getutxline NEW: Unix98
1348 glob64 NEW: GNU ext.
1349 globfree64 NEW: GNU ext.
1350 gnu_get_libc_release NEW: GNU ext.
1351 gnu_get_libc_version NEW: GNU ext.
1352 grantpt NEW: Unix98 PTY
1353 host2netname NEW: Secure RPC
1354 iconv NEW: iconv
1355 iconv_close NEW: iconv
1356 iconv_open NEW: iconv
1357 if_freenameindex NEW: IPv6
1358 if_indextoname NEW: IPv6
1359 if_nameindex NEW: IPv6
1360 if_nametoindex NEW: IPv6
1361 in6addr_any NEW: IPv6
1362 in6addr_loopback NEW: IPv6
1363 inet6_isipv4mapped NEW: IPv6
1364 isastream NEW: STREAMS
1365 iswblank NEW: GNU ext.
1366 key_decryptsession NEW: Secure RPC
1367 key_decryptsession_pk NEW: Secure RPC
1368 key_encryptsession NEW: Secure RPC
1369 key_encryptsession_pk NEW: Secure RPC
1370 key_gendes NEW: Secure RPC
1371 key_get_conv NEW: Secure RPC
1372 key_secretkey_is_set NEW: Secure RPC
1373 key_setnet NEW: Secure RPC
1374 key_setsecret NEW: Secure RPC
1375 llrint NEW: ISO C 9x
1376 llrintf NEW: ISO C 9x
1377 llrintl NEW: ISO C 9x
1378 llround NEW: ISO C 9x
1379 llroundf NEW: ISO C 9x
1380 llroundl NEW: ISO C 9x
1381 log2 NEW: ISO C 9x
1382 log2f NEW: ISO C 9x
1383 log2l NEW: ISO C 9x
1384 lrint NEW: ISO C 9x
1385 lrintf NEW: ISO C 9x
1386 lrintl NEW: ISO C 9x
1387 lround NEW: ISO C 9x
1388 lroundf NEW: ISO C 9x
1389 lroundl NEW: ISO C 9x
1390 lseek64 NEW: LFS
1391 makecontext NEW: Unix98
1392 mempcpy NEW: GNU ext.
1393 mmap64 NEW: LFS
1394 moncontrol REMOVED
1395 modify_ldt NEW: kernel
1396 nan NEW: ISO C 9x
1397 nanf NEW: ISO C 9x
1398 nanl NEW: ISO C 9x
1399 nearbyint NEW: ISO C 9x
1400 nearbyintf NEW: ISO C 9x
1401 nearbyintl NEW: ISO C 9x
1402 netname2host NEW: Secure RPC
1403 netname2user NEW: Secure RPC
1404 nexttoward NEW: ISO C 9x
1405 nexttowardf NEW: ISO C 9x
1406 nexttowardl NEW: ISO C 9x
1407 nftw NEW: Unix98
1408 nftw64 NEW: LFS
1409 open64 NEW: LFS
1410 passwd2des NEW: Secure RPC
1411 pow10 NEW: GNU ext.
1412 pow10f NEW: GNU ext.
1413 pow10l NEW: GNU ext.
1414 pread NEW: Unix98
1415 pread64 NEW: LFS
1416 printf_size NEW: GNU ext.
1417 printf_size_info NEW: GNU ext.
1418 profil_counter REMOVED
1419 pthread_mutexattr_getkind_np REPLACED
1420 pthread_mutexattr_setkind_np REPLACED
1421 ptsname NEW: Unix98 PTY
1422 ptsname_r NEW: Unix98 PTY
1423 putc_locked REMOVED
1424 putchar_locked REMOVED
1425 putgrent NEW: GNU ext.
1426 putmsg NEW: STREAMS
1427 putpmsg NEW: STREAMS
1428 pututxline NEW: Unix98
1429 pwrite NEW: Unix98
1430 pwrite64 NEW: LFS
1431 readdir64 NEW: LFS
1432 readdir64_r NEW: LFS
1433 remquo NEW: ISO C 9x
1434 remquof NEW: ISO C 9x
1435 remquol NEW: ISO C 9x
1436 round NEW: ISO C 9x
1437 roundf NEW: ISO C 9x
1438 roundl NEW: ISO C 9x
1439 rtime NEW: GNU ext.
1440 scalbln NEW: ISO C 9x
1441 scalblnf NEW: ISO C 9x
1442 scalblnl NEW: ISO C 9x
1443 scandir64 NEW: LFS
1444 sendfile NEW: kernel
1445 setcontext NEW: Unix98
1446 setrlimit64 NEW: LFS
1447 setutxent NEW: Unix98
1448 sighold NEW: Unix98
1449 sigignore NEW: Unix98
1450 sigqueue NEW: POSIX.1b
1451 sigrelse NEW: Unix98
1452 sigset NEW: POSIX.1b
1453 sigtimedwait NEW: POSIX.1b
1454 sigwaitinfo NEW: POSIX.1b
1455 sincos NEW: GNU ext.
1456 sincosf NEW: GNU ext.
1457 sincosl NEW: GNU ext.
1458 statfs64 NEW: LFS
1459 statvfs NEW: Unix98
1460 statvfs64 NEW: LFS
1461 strcasestr NEW: GNU ext.
1462 strtoimax NEW: ISO C 9x
1463 strtoumax NEW: ISO C 9x
1464 strverscmp NEW: GNU ext.
1465 svcauthdes_stats NEW: Secure RPC
1466 svcunix_create NEW: sunrpc etx
1467 svcunixfd_create NEW: sunrpc ext
1468 swapcontext NEW: Unix98
1469 tcgetsid NEW: Unix98 PTY
1470 tdestroy NEW: GNU ext.
1471 tgamma NEW: ISO C 9x
1472 tgammaf NEW: ISO C 9x
1473 tgammal NEW: ISO C 9x
1474 tmpfile64 NEW: LFS
1475 trunc NEW: ISO C 9x
1476 truncate64 NEW: LFS
1477 truncf NEW: ISO C 9x
1478 truncl NEW: ISO C 9x
1479 umount2 NEW: kernel
1480 unlockpt NEW: Unix98 PTY
1481 updwtmpx NEW: Unix98
1482 user2netname NEW: Secure RPC
1483 utmpxname NEW: Unix98
1484 versionsort NEW: GNU ext.
1485 versionsort64 NEW: GNU ext.
1486 waitid NEW: Unix98
1487 wcscasecmp NEW: GNU ext.
1488 wcsncasecmp NEW: GNU ext.
1489 wcsnlen NEW: GNU ext.
1490 wcstoimax NEW: ISO C 9x
1491 wcstoll NEW: ISO C 9x
1492 wcstoull NEW: ISO C 9x
1493 wcstoumax NEW: ISO C 9x
1494 wcswcs NEW: Unix98
1495 wordexp NEW: POSIX.2
1496 wordfree NEW: POSIX.2
1497 write_profiling REMOVED
1498 xdecrypt NEW: Secure RPC
1499 xdr_authdes_cred NEW: Secure RPC
1500 xdr_authdes_verf NEW: Secure RPC
1501 xdr_cryptkeyarg NEW: Secure RPC
1502 xdr_cryptkeyarg2 NEW: Secure RPC
1503 xdr_cryptkeyres NEW: Secure RPC
1504 xdr_getcredres NEW: Secure RPC
1505 xdr_key_netstarg NEW: Secure RPC
1506 xdr_key_netstres NEW: Secure RPC
1507 xdr_keybuf NEW: Secure RPC
1508 xdr_keystatus NEW: Secure RPC
1509 xdr_netnamestr NEW: Secure RPC
1510 xdr_sizeof NEW: Secure RPC
1511 xdr_unixcred NEW: sunrpc ext
1512 xencrypt NEW: Secure RPC
1513 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1514 \f
1515 Version 2.0.6
1517 * more bug fixes
1519 \f
1520 Version 2.0.5
1522 * more bug fixes
1524 * inet_ntoa is thread-safe
1526 * updwtmp is moved from libutil to libc
1528 * rewrite of cbrt function
1530 * update of timezone data
1531 \f
1532 Version 2.0.4
1534 * more bug fixes
1535 \f
1536 Version 2.0.3
1538 * more bug fixes
1539 \f
1540 Version 2.0.2
1542 * more bug fixes
1544 * add atoll function
1546 * fix complex problems in Berkeley DB code
1548 * fix math functions
1549 \f
1550 Version 2.0.1
1552 * fixed lots of header problems (especially Linux/GNU specific)
1554 * dynamic loader preserves all registers
1556 * Roland McGrath provided support for handling of auxiliary objects in
1557 the ELF dynamic loader.
1559 * support for parallel builds is improved
1560 \f
1561 Version 2.0
1563 * GNU extensions are no longer declared by default. To enable them you
1564 must define the macro `_GNU_SOURCE' in your program or compile with
1565 `-D_GNU_SOURCE'.
1567 * The library has changed from using GNU ld symbol aliases to using weak
1568 symbols where available. The ELF object file format supports weak
1569 symbols; GNU ld also supports weak symbols in the a.out format. (There
1570 is also now support for other GNU ld extensions in ELF. Use the
1571 `--with-elf' option to configure to indicate you have ELF, and
1572 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1573 of many files which contained only symbol aliases, reducing the size of
1574 the source and the compiled library; many other files were renamed to
1575 less cryptic names previously occupied by the symbol alias files.
1576 There is a new header file <elf.h> for programs which operate on
1577 files in the ELF format.
1579 * Converted to Autoconf version 2, so `configure' has more options.
1580 Run `configure --help' to see the details.
1582 * The library can now be configured to build profiling, highly-optimized
1583 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1584 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1585 `configure' enable building these extra libraries. The shared library is
1586 built by default when using both ELF and GNU ld. When shared libraries
1587 are enabled, the new library `-ldl' is available for arbitrary run-time
1588 loading of shared objects; its interface is defined in <dlfcn.h>. The
1589 new header file <link.h> gives access to the internals of the run-time
1590 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1591 application of same name on other systems and it provides information
1592 about dynamically linked binaries.
1594 * The C library now provides the run-time support code for profiling
1595 executables compiled with `-pg'. Programs can control the profiling code
1596 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1597 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1598 the support for this file format was contributed by David Mosberger-Tang.
1600 * The math code has been replaced with a math library based on fdlibm from
1601 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1602 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1603 functions. The math functions now reside in a separate library, so
1604 programs using them will need to use `-lm' their linking commands.
1606 * John C. Bowman contributed optimized ix87 assembler inline functions.
1608 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1609 mechanism similar to that found in Solaris 2. This is now used for the
1610 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1611 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1612 file controls what services are used for each individual database. This
1613 works by loading shared libraries with names specified in `nsswitch.conf',
1614 so service modules can be changed or added at any time without even
1615 relinking any program. Currently there are the file, db, and NIS based
1616 NSS services available.
1618 * The new functions `strtoq' and `strtouq' parse integer values from
1619 strings, like `strtol' and `strtoul', but they return `long long int' and
1620 `unsigned long long int' values, respectively (64-bit quantities).
1622 * The new functions `strtof' and `strtold' parse floating-point values from
1623 strings, like `strtod', but they return `float' and `long double' values,
1624 respectively (on some machines `double' and `long double' are the same).
1626 * Ulrich Drepper has contributed new implementations of the floating-point
1627 printing and reading code used in the `printf' family of functions and
1628 `strtod', `strtof', and `strtold'. These new functions are perfectly
1629 accurate, and much faster than the old ones.
1631 * The implementation of the POSIX locale model was completely rewritten by
1632 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1633 to compile the POSIX locale definition.
1635 * The former dummy implementations of the strcoll and strxfrm function are
1636 now replaced by fully functional code contributed by Ulrich Drepper. The
1637 collation information comes from the POSIX locale definitions.
1639 * The new header <langinfo.h> defines an interface for accessing
1640 various locale-dependent data (using the locale chosen with `setlocale').
1642 * Ulrich Drepper has contributed a new suite of functions for operation on
1643 wide-character and multibyte-character strings, in <wchar.h>;
1644 and classification and case conversion of wide characters, in <wctype.h>.
1645 These new functions are conforming to the ISO C, Amendement 1 specification.
1647 * There is now a second implementation of the standard I/O library available.
1648 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1649 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1651 * You can now use positional parameter specifications in format strings
1652 for the `printf' and `scanf' families of functions. For example,
1653 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1654 ``Number 6, Mr Jones''. This is mainly useful when providing different
1655 format strings for different languages, whose grammars may dictate
1656 different orderings of the values being printed. To support this
1657 feature, the interface for `register_printf_handler' has changed; see
1658 the header file <printf.h> for details.
1660 * The `printf' and `scanf' families of functions now understand a new
1661 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1662 to group numbers as indicated by the locale; for `scanf' and friends, this
1663 says to accept as valid only a number with all the proper grouping
1664 separators in the right places. In the default "C" locale, numbers are
1665 not grouped; but locales for specific countries will define the usual
1666 conventions (i.e. separate thousands with `,' in the US locale).
1668 * The pgrp functions have been regularized, slightly incompatibly but much
1669 less confusingly. The core functions are now `getpgid' and `setpgid',
1670 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1671 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1672 provided for compatibility. There is no longer an incompatible `getpgrp'
1673 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1675 * The new header file <fts.h> and suite of functions simplify programs that
1676 operate on directory trees. This code comes from 4.4 BSD.
1678 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1679 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1680 NSS scheme used in glibc.
1682 * There is a new malloc debugging hook `__memalign_hook'.
1684 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1685 `unsigned int' in <sys/types.h>. These are for compatibility only and
1686 their use is discouraged.
1688 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1689 done differently, so that it works even without GNU ld.
1691 * New function `euidaccess' checks allowed access to a file like `access',
1692 but using the effective IDs instead of the real IDs.
1694 * The time zone data files have been updated for the latest and greatest
1695 local time conventions of the countries of the world.
1697 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1698 see <dirent.h>.
1700 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1701 for formatting floating-point numbers. They are provided only for
1702 compatibility; new programs should use `sprintf' instead. There are
1703 also equivalent function for the `long double' floating-point type and
1704 all functions also exist in a reentrant form.
1706 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1707 functions for maintaining the login-record files (primarily of use to
1708 system programs such as `login'), and convenient functions for
1709 allocating and initializing a pseudo-terminal (pty) device.
1711 * Ulrich Drepper has contributed new support for System V style
1712 shared memory and IPC on systems that support it.
1714 * Ulrich Drepper has contributed several miscellaneous new functions found
1715 in System V: The `hsearch' family of functions provide an effective
1716 implementation of hash tables; `a64l' and `l64a' provide a very simple
1717 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1718 number generator.
1720 * Ulrich Drepper has contributed new reentrant counterparts for the
1721 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1723 * Ulrich Drepper has contributed new, highly-optimized versions of several
1724 string functions for the i486/Pentium family of processors.
1726 * Ulrich Drepper has updated the Linux-specific code, based largely
1727 on work done in Hongjiu Lu's version of GNU libc for Linux.
1728 The GNU library now supports Linux versions 2.0.10 and later,
1729 using the ELF object file format (i[3456]86-*-linux).
1731 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1733 * David Mosberger-Tang and Richard Henderson have ported the C library
1734 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1735 dynamic linking support for ELF/Alpha.
1737 * Richard Henderson contributed several Alpha optimized assembler function
1738 for arithmetic and string handling.
1740 * Ulrich Drepper has contributed a new set of message catalog functions to
1741 support multiple languages using the <libintl.h> interface, for use with
1742 his new package GNU gettext. Translation volunteers have contributed
1743 catalogs of the library's messages in Spanish, German, and Korean.
1745 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1746 program and the `catgets' function for reading the catalog files it
1747 creates. (The <libintl.h> interface is preferred; we include the
1748 <nl_types.h> interface using `catgets' only for source compatibility with
1749 programs already written to use it.)
1751 * New header file <values.h> gives SVID-compatible names for <limits.h>
1752 constants.
1754 * Various new macros, declarations, and small header files for compatibility
1755 with 4.4 BSD.
1757 * New function `group_member' is a convenient way to check if a process has
1758 a given effective group ID.
1760 * When using GCC 2.7 and later, the socket functions are now declared in a
1761 special way so that passing an argument of type `struct sockaddr_in *',
1762 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1763 `struct sockaddr *' type, does not generate a type-clash warning.
1765 * New function `error' declared in header file <error.h> is a convenient
1766 function for printing error messages and optionally exiting; this is the
1767 canonical function used in GNU programs. The new functions `err', `warn',
1768 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1769 doing the same thing.
1771 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1772 POSIX.2 `glob' function to do ~ and {...} expansion.
1774 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1775 `clearenv' which is used in POSIX.9 is also available.
1777 * New function `getsid' returns session ID number on systems that support it.
1779 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1780 files <db.h> and <mpool.h> provide a rich set of functions for several
1781 types of simple databases stored in memory and in files, and <ndbm.h> is
1782 an old `ndbm'-compatible interface using the `db' functions. Link with
1783 `-ldb' to get these functions.
1785 * New macro `strdupa' copies a string like `strdup', but uses local stack
1786 space from `alloca' instead of dynamic heap space from `malloc'.
1788 * New function `strnlen' is like `strlen' but searches only a given maximum
1789 number of characters for the null terminator. `stpncpy', `strndup' and
1790 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1791 function.
1793 * New function `statfs' in header <sys/statfs.h>.
1795 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1796 provide convenient functions for operating on blocks of null-terminated
1797 strings.
1799 * A new suite of functions in <utmp.h> handle all the details of reading
1800 and writing the utmp file.
1802 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1803 Thorsten Kukuk.
1805 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1806 completely POSIX compliant and also implemented the extended functionality
1807 to handle alternate digit representation and alternate era date formats.
1809 * Ulrich Drepper provided an implementation of the `strptime' function
1810 defined in XPG4.2 which transforms a string into a `struct tm' value.
1812 * Paul Eggert provided the tzselect shell script as part of the timezone
1813 code. The shell script makes it easy to select the correct timezone
1814 specification.
1816 * The implementation of the malloc family of functions is completely replaced
1817 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1818 The implementation uses the mmap function (if available) and it is
1819 optimized for the use in multi threaded programs.
1821 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1822 functions. This new functionality is usable by specifying a special
1823 salt string and it is compatible with implementation on *BSD systems.
1825 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1826 `getsubopt' to handle second level command line options, `bsd_signal'
1827 to access BSD style `signal' functionality, the obsolete `regexp' style
1828 expression matcher.
1830 * the `lchown' function is available on system which support this
1831 functionality.
1833 * The implementation of the shadow password handling function was contributed
1834 by Ulrich Drepper.
1836 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1838 * POSIX.1g support was added. The <sys/select.h> header is available,
1839 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1840 implementation of `getaddrinfo'.
1841 \f
1842 Version 1.09
1844 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1846 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1847 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1849 * The new function `daemon' from 4.4 BSD is useful for server programs that
1850 want to put themselves in the background.
1852 * Joel Sherrill has contributed support for several standalone boards that
1853 run without an operating system.
1855 * `printf', `scanf' and friends now accept a `q' type modifier for long
1856 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1858 * All of the code taken from BSD (notably most of the math and networking
1859 routines) has been updated from the BSD 4.4-Lite release.
1861 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1863 * The new functions `getdomainname' and `setdomainname' fetch or change the
1864 YP/NIS domain name. These are system calls which exist on systems which
1865 have YP (aka NIS).
1867 * The time zone data files have been updated for the latest international
1868 conventions.
1870 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1871 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1872 \f
1873 Version 1.08
1875 * The C library now includes support for Sun RPC, from Sun's free
1876 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1877 are included. (There is still no support for YP.)
1879 * Tom Quinn has contributed a port of the C library to SGI machines running
1880 Irix 4 (mips-sgi-irix4).
1882 * The new `lockf' function is a simplified interface to the locking
1883 facilities of `fcntl', included for compatibility.
1885 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1887 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1889 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1890 compatibility.
1892 * The error message printed by `assert' for a failed assertion now includes
1893 the name of the program (if using GNU ld) and the name of the calling
1894 function (with versions of GCC that support this).
1896 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1898 * The library now includes the <sys/mman.h> header file and memory
1899 management functions `mmap', `munmap', `mprotect', `msync', and
1900 `madvise', on systems that support those facilities.
1902 * The interface for `mcheck' has changed slightly: the function called to
1903 abort the program when an allocation inconsistency is detected now takes
1904 an argument that indicates the type of failure. The new function
1905 `mprobe' lets you request a consistency check for a particular block at
1906 any time (checks are normally done only when you call `free' or `realloc'
1907 on a block).
1909 * It is now possible to easily cross-compile the C library, building on one
1910 system a library to run on another machine and/or operating system. All
1911 you need to do is set the variable `HOST_CC' in `configparms' to the
1912 native compiler for programs to run on the machine you are building on (a
1913 few generator programs are used on Unix systems); set `CC' to the
1914 cross-compiler.
1916 * The new function `fexecve' (only implemented on the GNU system) executes
1917 a program file given a file descriptor already open on the file.
1918 \f
1919 Version 1.07
1921 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1922 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1924 * You can set the variable `libprefix' in `configparms' to specify a prefix
1925 to be prepended to installed library files; this makes it easy to install
1926 the GNU C library to be linked as `-lgnuc' or whatever.
1928 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1929 copies a limited number of characters from a string, and returns the
1930 address of the last character written.
1932 * You no longer need to check for whether the installed `stddef.h' is
1933 compatible with the GNU C library. configure now checks for you.
1935 * You can now define a per-stream `fileno' function to convert the
1936 stream's cookie into an integral file descriptor.
1938 * ``malloc (0)'' no longer returns a null pointer. Instead, it
1939 allocates zero bytes of storage, and returns a unique pointer which
1940 you can pass to `realloc' or `free'. The behavior is undefined if
1941 you dereference this pointer.
1943 * The C library now runs on Sony NEWS m68k machines running either
1944 NewsOS 3 or NewsOS 4.
1946 * The new `syscall' function is a system-dependent primitive function
1947 for invoking system calls. It has the canonical behavior on Unix
1948 systems, including unreliable return values for some calls (such as
1949 `pipe', `fork' and `getppid').
1951 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
1952 to `EAGAIN', which is the preferred name. On systems whose kernels
1953 use two distinct codes, the C library now translates EWOULDBLOCK to
1954 EAGAIN in every system call function.
1955 \f
1956 Version 1.06
1958 * The GNU C Library Reference Manual is now distributed with the library.
1959 `make dvi' will produce a DVI file of the printed manual.
1960 `make info' will produce Info files that you can read on line using C-h i
1961 in Emacs or the `info' program.
1962 Please send comments on the manual to bug-glibc-manual@gnu.org.
1964 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
1966 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
1968 * Jason Merrill has contributed a port to the Sequent Symmetry running
1969 Dynix version 3 (i386-sequent-dynix).
1971 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
1972 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
1974 * New function `memory_warnings' lets you arrange to get warnings when
1975 malloc is running out of memory to allocate, like Emacs gives you.
1977 * The C library now contains the relocating allocator used in Emacs 19 for
1978 its editing buffers. This allocator (ralloc) minimizes allocation
1979 overhead and fragmentation by moving allocated regions around whenever it
1980 needs to. You always refer to a ralloc'd region with a "handle" (a
1981 pointer to a pointer--an object of type `void **').
1983 * There is a new `printf' format: `%m' gives you the string corresponding
1984 to the error code in `errno'.
1986 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
1987 or `%[' conversion, but instead of filling in a fixed-sized buffer you
1988 pass, the `a' modifier says to fill in a `char **' you pass with a
1989 malloc'd string.
1991 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
1992 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
1993 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
1995 * `mkstemp' is a traditional Unix function to atomically create and open a
1996 uniquely-named temporary file.
1997 \f
1998 Version 1.05
2000 * The standard location for the file that says what the local timezone is
2001 has changed again. It is now `/usr/local/etc/localtime' (or more
2002 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2004 * The distribution no longer contains any files with names longer than 14
2005 characters.
2007 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2008 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2010 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2011 \f
2012 Version 1.04
2014 * The configuration process has changed quite a bit. The `configure'
2015 script is now used just like the configuration scripts for other GNU
2016 packages. The `sysdeps' directory hierarchy is much rearranged.
2017 The file `INSTALL' explains the new scheme in detail.
2019 * The header files no longer need to be processed into ANSI C and
2020 traditional C versions. There is just one set of files to install, and
2021 it will work with ANSI or old C compilers (including `gcc -traditional').
2023 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2024 MIPS DECStation running Ultrix 4.
2026 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2027 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2028 made itself into a shared library.
2030 * Yet further improved support for the i386, running 4.3 BSD-like systems
2031 (such as Mach 3 with the Unix single-server), or System V.
2033 * New function `strncasecmp' to do case-insensitive string comparison
2034 with limited length.
2036 * New function `strsep' is a reentrant alternative to `strtok'.
2038 * New functions `scandir' and `alphasort' for searching directories.
2040 * New function `setenv' is a better interface to `putenv'.
2042 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2043 function for traversing a directory tree.
2045 * The GNU obstack package is now also part of the C library.
2046 The new function `open_obstack_stream' creates a stdio stream that
2047 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2048 formatted output directly to an obstack.
2050 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2051 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2053 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2055 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2056 things to your strings.
2058 * There are some new test programs: test-fseek, testmb, and testrand.
2060 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2061 These ports are not finished, but are a good starting place for really
2062 supporting those systems.
2064 * `/etc/localtime' is now the standard location for the file that says what
2065 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2066 This follows the general principle that `/etc' is the place for all local
2067 configuration files.
2069 * The C library header files now use `extern "C"' when used by the C++
2070 compiler, so the C library should now work with C++ code.
2072 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2073 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2074 in <strings.h>.)
2076 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2077 function which uses the `merge sort' algorithm, and is said to be
2078 significantly faster than the old GNU `qsort' function. Merge sort is
2079 now the standard `qsort' function. The new algorithm can require a lot
2080 of temporary storage; so, the old sorting function is called when the
2081 required storage is not available.
2083 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2084 provides the Unix `crypt' function, plus some other entry points.
2086 * The code and header files taken from 4.4 BSD have been updated with the
2087 latest files released from Berkeley.
2088 \f
2089 ----------------------------------------------------------------------
2090 Copyright information:
2092 Copyright (C) 1992-2009, 2010, 2011 Free Software Foundation, Inc.
2094 Permission is granted to anyone to make or distribute verbatim copies
2095 of this document as received, in any medium, provided that the
2096 copyright notice and this permission notice are preserved,
2097 thus giving the recipient permission to redistribute in turn.
2099 Permission is granted to distribute modified versions
2100 of this document, or of portions of it,
2101 under the above conditions, provided also that they
2102 carry prominent notices stating who last changed them.
2103 \f
2104 Local variables:
2105 version-control: never
2106 fill-column: 76
2107 End: