| blob | ee2dc967e022e1c49c5bdd9858b95bbf6c78d842 |
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, 3768,
14 3866, 3868, 3976, 3992, 4026, 4108, 4596, 4822, 5077, 5461, 5805, 5993,
15 6471, 6486, 6578, 6649, 6730, 6770, 6794, 6884, 6890, 6894, 6895, 6907,
16 6911, 6959, 7064, 9739, 9902, 10110, 10135, 10140, 10153, 10210, 10254,
17 10346, 10545, 10716, 11174, 11322, 11365, 11451, 11494, 11521, 11959,
18 12047, 12340, 13058, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
19 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13559, 13563, 13566,
20 13583, 13592, 13618, 13637, 13656, 13658, 13673, 13691, 13695, 13704,
21 13705, 13706, 13726, 13738, 13739, 13758, 13760, 13761, 13775, 13786,
22 13787, 13792, 13806, 13824, 13840, 13841, 13844, 13846, 13851, 13852,
23 13854, 13871, 13872, 13873, 13879, 13883, 13884, 13885, 13886, 13892,
24 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
25 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
26 13938, 13941, 13942, 13963, 13967, 13970, 13973, 13979, 13983, 14027,
27 14033, 14034, 14040, 14049, 14055, 14064, 14080
29 * ISO C11 support:
31 + define static_assert
33 + do not declare gets
35 + declare at_quick_exit and quick_exit also for ISO C11
37 + aligned_alloc. NB: The code is deliberately allows the size parameter
38 to not be a multiple of the alignment. This is a moronic requirement
39 in the standard but it is only a requirement on the caller, not the
40 implementation.
42 + timespec_get added
44 + uchar.h support added
46 + CMPLX, CMPLXF, CMPLXL added
48 Implemented by Ulrich Drepper.
50 * Support for the IA-64 is removed and could live in ports.
52 * Remove support for anything but ELF binary format
54 * Checking versions of poll, ppoll added.
55 Implemented by Ulrich Drepper.
57 * More generic and 64-bit performance optimizations to math functions.
58 Implemented by Ulrich Drepper.
60 * Resurrect the RPC implementation in libc so that it can be used again for
61 compilation of new programs. It will be removed once TI-RPC can fully
62 replace the glibc RPC code. To use it, configure using
63 --enable-obsolete-rpc.
65 Version 2.15
67 * The following bugs are resolved with this release:
69 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
70 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
71 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
72 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
73 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
74 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
75 13484, 13506, 13515, 13523, 13524, 13538, 13540
77 * New program pldd to list loaded object of a process
78 Implemented by Ulrich Drepper.
80 * Add nss_db support back to glibc. No more dependency on Berkeley db
81 and support for initgroups lookups.
82 Implemented by Ulrich Drepper.
84 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
85 Contributed by HJ Lu.
87 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
88 Contributed by HJ Lu.
90 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
91 on x86-32 and x86-64.
92 Contributed by Liubov Dmitrieva.
94 * Optimized strchr and strrchr for SSE on x86-32.
95 Contributed by Liubov Dmitrieva.
97 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
98 for x86-64 and x86-32.
99 Contributed by Liubov Dmitrieva.
101 * New interfaces: scandirat, scandirat64
102 Implemented by Ulrich Drepper.
104 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
105 Implemented by Ulrich Drepper.
107 * nscd now also caches the netgroup database.
108 Implemented by Ulrich Drepper.
110 * Integrate libm with gcc's -ffinite-math-only option.
111 Implemented by Ulrich Drepper.
113 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
114 to math functions. Implemented by Ulrich Drepper.
116 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
117 Implemented by Ulrich Drepper.
119 * New Linux interfaces: process_vm_readv, process_vm_writev
121 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
122 Implemented by Ulrich Drepper.
124 * Optimized nearbyint and strcasecmp for PPC.
125 Implemented by Adhemerval Zanella.
127 * New locales: bho_IN, unm_US, es_CU, ta_LK
128 \f
129 Version 2.14
131 * The following bugs are resolved with this release:
133 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
134 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
135 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
136 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
137 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
138 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
139 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
140 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
141 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
142 12795, 12811, 12813, 12814, 12841
144 * The RPC implementation in libc is obsoleted. Old programs keep working
145 but new programs cannot be linked with the routines in libc anymore.
146 Programs in need of RPC functionality must be linked against TI-RPC.
147 The TI-RPC implementation is IPv6 enabled and there are other benefits.
149 Visible changes of this change include (obviously) the inability to link
150 programs using RPC functions without referencing the TI-RPC library and the
151 removal of the RPC headers from the glibc headers.
152 Implemented by Ulrich Drepper.
154 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
155 syncfs, setns, sendmmsg
157 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
158 yue_HK, lij_IT, mhr_RU
160 * New encodings: CP770, CP771, CP772, CP773, CP774
162 * New program sotruss to trace calls through PLTs
163 Implemented by Ulrich Drepper.
165 * The malloc hook implementation is marked deprecated and will be removed
166 from the default implementation in the next version. The design never
167 worked ever since the introduction of threads. Even programs which do
168 not create threads themselves can use multiple threads created internally.
169 \f
170 Version 2.13
172 * The following bugs are resolved with this release:
174 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
175 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
176 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
177 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
178 12378, 12394, 12397
180 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
182 * POWER7 optimizations: memset, memcmp, strncmp
184 * New optimized string functions for x86-64: strnlen (SSE2),
185 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
186 Implemented by Ulrich Drepper.
187 \f
188 Version 2.12
190 * The following bugs are resolved with this release:
192 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915, 10918,
193 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001, 11007,
194 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070, 11093,
195 11115, 11120, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
196 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
197 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
198 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
199 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
201 * New interfaces: pthread_getname_np, pthread_setname_np
203 * New Linux interface: recvmmsg
205 * STT_GNU_IFUNC implemented for Sparc by David Miller.
207 * The dynamic linker now recognizes supported ABI versions from the
208 EI_ABIVERSION field in the ELF header.
209 Implemented by Ulrich Drepper.
211 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
212 will not be used to fill in password fields in the passwd.byname replies.
213 Instead it is used to synthesize the shadow.byname table, should it be
214 missing. This is a useful mode in some installations involving Solaris.
215 Implemented by Ulrich Drepper.
217 * New locales: kok_IN, sq_MK, cv_RU
218 \f
219 Version 2.11
221 * The following bugs are resolved with this release:
223 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
224 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
225 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
226 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
227 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
228 10789, 10817, 10823, 10840, 10847
230 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
231 mkostemps64
232 Implemented by Ulrich Drepper.
234 * Checking version of longjmp added that fails if an uninitialized stack
235 frame would be created. Implemented by Ulrich Drepper.
237 * STT_GNU_IFUNC is now supported in static executables.
238 Implemented by H.J. Lu.
240 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
242 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
243 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
244 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
245 Contributed by H.J. Lu.
247 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
248 Implemented by Ulrich Drepper.
250 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
251 strstr, strcasestr.
252 Contributed by H.J. Lu.
254 * Support for fma instruction in AVX on x86-64.
255 Implemented by H.J. Lu and Ulrich Drepper.
257 * AVX support in x86-64 auditing support in ld.so.
258 Implemented by H.J. Lu.
260 * STB_GNU_UNIQUE support added.
261 Implemented by Ulrich Drepper.
263 * Implement second fallback mode for optimized DNS lookup for even more
264 broken environments. If two requests from the same port are not
265 handled correctly close the socket and open a new one before sending
266 the second request. The 'single-request-reopen' option in /etc/resolv.conf
267 can be used to select this mode right away, instead of rediscovering the
268 necessity is every process again.
269 Implemented by Ulrich Drepper.
271 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
272 Implemented by Adam Tkac.
274 * Optimized iconv conversions for S390x.
275 Implemented by Andreas Krebbel.
277 * Using condvars with PI mutexes is now more efficient due to kernel
278 support for requeueing to PI futexes. NPTL support added for x86-64.
279 Implemented by Ulrich Drepper.
281 * New locales: ps_AF, my_MM
282 \f
283 Version 2.10
285 * The following bugs are resolved with this release:
287 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
288 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
289 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
290 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
291 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
293 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
294 Implemented by Ulrich Drepper.
296 * New Linux interfaces: accept4, fallocate, fallocate64.
297 Implemented by Ulrich Drepper.
299 * Correct declarations of string function when used in C++ code. This
300 could lead to compile errors for invalid C++ code.
302 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
303 now in POSIX.
305 * New POSIX 2008 interface: psiginfo
306 Implemented by Ulrich Drepper.
308 * New ISO C++1x interfaces: quick_exit, at_quick_exit
309 Implemented by Ulrich Drepper.
311 * Support for selecting between multiple function definitions at runtime
312 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
314 * The libcrypt library can now use the hash function implementations in
315 NSS. Implemented by Ulrich Drepper.
317 * The malloc implementation can be compiled to be less memory efficient
318 but higher performing in multi-threaded programs.
319 Implemented by Ulrich Drepper.
321 * New locales: nan_TW@latin, ks_IN
323 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
324 Implemented by Ulrich Drepper.
326 * Extended printf hook support. It is possible to use user-defined types
327 and extend existing format specifiers.
328 Implemented by Ulrich Drepper.
330 * Handling for group shadow files has been added.
331 Implemented by Ulrich Drepper.
333 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
334 servers (the case, e.g., for some people using the built-in DNS
335 server in ADSL modems/routers). There is a once-per-process timeout
336 in case of a broken server. To avoid it, users can run nscd or put
337 'options single-request' in /etc/resolv.conf.
338 Implemented by Ulrich Drepper.
339 \f
340 Version 2.9
342 * The following bugs are resolved with this release:
344 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
345 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
346 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
347 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
348 6968, 6974, 6980, 6995, 7008, 7009, 7029
350 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
351 up at the same time. Implemented by Ulrich Drepper.
353 * TLS descriptors for LD and GD on x86 and x86-64.
354 Implemented by Alexandre Oliva.
356 * getaddrinfo now handles DCCP and UDPlite.
357 Implemented by Ulrich Drepper.
359 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
360 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
361 Implemented by Ulrich Drepper.
363 * New implementation of memmem, strstr, and strcasestr which is O(n).
364 Implemented by Eric Blake.
366 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
368 * Implement "e" option for popen to open file descriptor with the
369 close-on-exec flag set. Implemented by Ulrich Drepper.
371 * Implement "b" mode for fmemopen. In this mode writes writes don't
372 implicitly add a NUL byte and seeks from the end of the buffer really
373 use the buffer end, not the string length as the basis.
374 Implemented by Ulrich Drepper.
376 * Many functions, exported and internal, now atomically set the close-on-exec
377 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
379 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
380 Sinhala)
381 Implemented by Pravin Satpute.
383 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
384 \f
385 Version 2.8
387 * The following bugs are resolved with this release:
389 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
390 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
391 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
392 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
393 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
394 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
395 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
397 * New locales: bo_CN, bo_IN, shs_CA.
399 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
401 * Sorting rules for some Indian languages (Devanagari and Gujarati).
402 Implemented by Pravin Satpute.
404 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
406 * nscd caches now all timeouts for DNS entries
407 Implemented by Ulrich Drepper.
409 * nscd is more efficient and wakes up less often.
410 Implemented by Ulrich Drepper.
412 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
413 vdprintf, and obstack_vprintf.
414 Implemented by Jakub Jelinek.
416 * Faster memset for x86-64.
417 Implemented by Harsha Jagasia and H.J. Lu.
419 * Faster memcpy on x86.
420 Implemented by Ulrich Drepper.
422 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
423 Implemented by Ulrich Drepper.
425 * Faster sqrt and sqrtf implemention for some PPC variants.
426 Implemented by Stephen Munroe.
427 \f
428 Version 2.7
430 * The following bugs are resolved with this release:
432 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
433 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
434 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
435 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
436 5071, 5103, 5104, 5112, 5113, 5184, 5186
438 * More checking functions: fread, fread_unlocked, open*, mq_open.
439 Implemented by Jakub Jelinek and Ulrich Drepper.
441 * Extend fortification to C++. Implemented by Jakub Jelinek.
443 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
444 by not recognizing 'a' as a modifier when those specs are requested.
445 Implemented by Jakub Jelinek.
447 * PPC optimizations to math and string functions.
448 Implemented by Steven Munroe.
450 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
451 options to be passed. Implemented by Ulrich Drepper.
453 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
455 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
456 Implemented by Ulrich Drepper.
458 * Handle private futexes in the NPTL implementation.
459 Implemented by Jakub Jelinek and Ulrich Drepper.
461 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
462 Implemented by Roland McGrath and Ulrich Drepper.
464 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
466 * SHA-256 and SHA-512 based password encryption.
467 Implemented by Ulrich Drepper.
469 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
470 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
471 yo_NG.
473 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
474 Implemented by Ulrich Drepper.
475 \f
476 Version 2.6
478 * The following bugs are resolved with this release:
480 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
481 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
482 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
483 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
484 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
485 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
486 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
487 4702, 4858
489 * New Linux interfaces: epoll_pwait, sched_getcpu.
491 * New generic interfaces: strerror_l.
493 * nscd can now cache the services database. Implemented by Ulrich Drepper.
494 \f
495 Version 2.5
497 * The following bugs are resolved with this release:
499 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
500 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
501 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
502 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
503 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
504 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
505 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
506 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
507 3225, 3251, 3252, 3253, 3273
509 * For Linux, the sorting of addresses returned by getaddrinfo now also
510 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
511 Implemented by Ulrich Drepper.
513 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
514 Implemented by Ulrich Drepper.
516 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
518 * New iconv module for MIK. Contributed by Alexander Shopov.
520 * For sites with broken group and/or passwd database, the auto-propagate
521 option of nscd can prevent creating ID lookup entries from the results
522 of a name lookup and vice versa. This usually is no problem but some
523 site might have problems with the default behavior.
524 Implemented by Ulrich Drepper.
526 * Iterating over entire database in NIS can be slow. With the
527 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
528 to trade time for memory. The entire database will be read at once.
529 Implemented by Ulrich Drepper.
531 * The interfaces introduced in RFC 3542 have been implemented by
532 Ulrich Drepper.
534 * Support for the new ELF hash table format was added by Ulrich Drepper.
536 * Support for priority inheritance mutexes added by Jakub Jelinek and
537 Ulrich Drepper.
539 * Support for priority protected mutexes added by Jakub Jelinek.
541 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
542 or_IN, csb_PL, fy_NL, sr_ME.
543 \f
544 Version 2.4
546 * More overflow detection functions.
548 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
549 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
551 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
552 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
553 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
554 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
555 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
556 by Masahide Washizawa.
558 * It is now possible to install audit libraries for the dynamic linker using
559 LD_AUDIT. Implemented by Ulrich Drepper.
561 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
562 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
563 For a libc and libpthread that works well on Linux 2.4 kernels, we
564 recommend using the stable 2.3 branch.
566 * The new function open_wmemstream acts like open_memstream,
567 but uses a wchar_t wide character buffer.
569 * The new function ppoll is an improved version of poll, similar to pselect.
571 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
572 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
573 renameat, unlinkat, linkat, symlinkat, readlinkat.
575 * New Linux kernel system calls: unshare,
576 inotify_init, inotify_add_watch, inotify_rm_watch.
578 * The euidaccess function is now also known by the alias eaccess,
579 for compatibility with some other systems.
581 * Timezone data updated to 2006b version.
582 \f
583 Version 2.3.6
585 * The following bugs are resolved with this release:
587 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
588 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
589 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
590 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
591 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
592 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
594 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
596 * As of this release, GCC 4 can be used to compile the C Library.
598 * Timezone data updated to 2005m version.
599 \f
600 Version 2.3.5
602 * The following bugs are resolved with this release:
604 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
605 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
606 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
607 777, 787, 821, 822, 823, 825
609 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
610 \f
611 Version 2.3.4
613 * Support for RFC 3678. Real implementations exist only for Linux so far.
614 Implemented by Ulrich Drepper.
616 * nscd can now cache entries persistently. Expiring entries are reloaded.
617 For speedups the cache can be shared in memory with client processes.
618 Implemented by Ulrich Drepper.
620 * nscd can now perform SELinux checks.
621 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
623 * getaddrinfo queries are now cached. Canonical name lookup is performed
624 efficiently.
625 Implemented by Ulrich Drepper.
627 * The nothrow function attribute is used when headers are used by gcc when
628 compiling C code. This can avoid significant amounts of exception
629 handling data.
631 * The malloc functions perform more error checking and are stricter when
632 it comes to reacting on errors. The default action is to terminate
633 the process after showing an error message. Implemented by Ulrich Drepper.
635 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
636 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
638 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
639 namespaces using the new function dlmopen(). This feature is of course,
640 like most other dynamic loading functionality, not available in statically
641 linked applications. Implemented by Ulrich Drepper.
643 * Low-overhead boundary checking variants of string and some stdio functions
644 were added. These are to be used in conjunction with a gcc patch by
645 Jakub Jelinek which adds calls to these functions if possible.
646 Implemented by Jakub Jelinek and Ulrich Drepper.
648 * Old code for several operating systems and machine architectures that
649 have not been in working condition in a long time have been removed from
650 the main source tree maintained by the GNU C Library's maintainers.
651 These files are now reside in the separate `ports' source module
652 that is usable as an add-on when building the library.
653 \f
654 Version 2.3.3
656 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
657 interrogate the dynamic linker, compatible with the Solaris interface.
659 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
660 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
662 * getifaddrs now uses the netlink interface on Linux to get its information.
663 Implemented by Thorsten Kukuk.
665 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
666 Implemented by Ulrich Drepper.
668 * support for non-executable stacks on x86 has been added. Changes mostly
669 by Roland McGrath.
671 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
672 and Ulrich Drepper.
674 * getaddrinfo now performs destination address selection according to
675 RFC 3484.
676 \f
677 Version 2.3.2
679 * Thread-safe interfaces for many functions that access locale data
680 were added in version 2.3, but these features were omitted from NEWS.
681 Many functions have variants with an `_l' suffix that take a `locale_t'
682 object as a parameter rather than consulting the current locale.
683 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
684 create and maintain `locale_t' objects. Additionally, the new function
685 `uselocale' sets "the current locale" (as used by functions not so
686 parameterized) set for an individual thread. These features were added
687 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
689 * The functions getresuid, getresgid, setresuid, and setresgid, which
690 have long been available on Linux, are now declared in <unistd.h>
691 and are now also available on the Hurd.
693 * ELF thread-local storage support (TLS) now works on x86-64.
695 * The new dynamic string token $LIB is expanded in shared library names.
696 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
698 * Aldy Hernandez contributed complete software floating point support for
699 PowerPC machines with no FPU.
701 * fexecve is implemented on Linux.
703 * The `btowc' function should work at least twice as fast due to
704 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
706 * With approriate thread add-ons cancelable functions are now implemented
707 in libc.so as well. No need to call the function in libpthread. This
708 change allowed to finally disable the incorrect and expensive handling
709 of weak definition in ld.so.
711 * Yet more PLT entries in libc.so have been removed. We finally arrived
712 at the bare minimum. Startup times improved appropriately.
714 * Support for the new Linux/x86 system call interface was added. The
715 AT_SYSINFO auxiliary vector entry is recognized and handled.
716 \f
717 Version 2.3
719 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
720 charsets.
722 * iconv (the program and the interface) now accepts empty names (excluding
723 options like //TRANSLIT) to mean "use charset of current locale".
725 * localedef can now transliterate characters in strings which are not in
726 the provided charmap. The information from the input locale is used.
728 * Prelinking support was added for ELF targets. This requires additional
729 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
731 * Read-only stdio streams now use mmap to speed up operation by eliminating
732 copying and buffer underflows. To use add 'm' to the mode string of
733 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
735 * The malloc functions were completely rewritten by Wolfram Gloger based
736 on Doug Lea's malloc-2.7.0.c.
738 * Isamu Hasegawa contributed a completely new and POSIX-conformant
739 implementation of regex.
741 * Bruno Haible upgraded the iconv and locale implementation to support
742 Unicode 3.2.
744 * Contents of the LC_* and LANG environment variables in the CEN style are
745 not recognized anymore. It never was used. Change by Ulrich Drepper.
747 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
748 thread-local storage (TLS) ABI on some platforms.
749 Changes by Ulrich Drepper. SH support by Kaz Kojima.
751 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
752 EUC-JISX0213, and TSCII.
754 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
755 BSD-compatible interface for getting all network interface addresses.
756 Implementation for IPv4 by Roland McGrath.
758 * Loading of locale data is faster due to the introduction of a locale
759 archive. Implemented by Roland McGrath and Ulrich Drepper.
761 * Startup times are significantly reduced by not using exported functions
762 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
763 and Ulrich Drepper.
765 * Steven Munroe contributed a port to PowerPC64/Linux.
766 \f
767 Version 2.2.6
769 * The Hurd now uses the GNU libio implementation of stdio rather than the
770 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
772 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
773 with the same behavior as the Linux system call of the same name.
774 \f
775 Version 2.2.5
777 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
778 128-bit long double format.
780 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
781 IBM1161, and IBM1162 charsets.
783 * Andreas Jaeger contributed a port to x86-64/Linux.
785 * Peter Bruin contributed a port to PowerPC/Hurd.
787 * libc functions using I/O streams now can handle wide-oriented streams
788 as well.
790 * optimizations in the dynamic linker. Binaries created by recent binutils
791 versions start up quicker due to reduced time spent on relocations.
793 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
794 \f
795 Version 2.2.4
797 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
798 asinh, atanh, j0 for the 128-bit long double format.
800 * Bruno Haible updated all the code handling Unicode in some form to
801 support Unicode 3.1.
803 * Speed of regex for single-byte locales is back to previous levels.
804 Patch by Isamu Hasegawa.
806 * Alpha, SPARC, and IA-64 now also using floating stacks.
808 * Startup time of internationalized applications greatly improved through
809 iconv cache. Use iconvconfig to generate the cache file.
810 Contributed by Ulrich Drepper.
812 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
813 severe performance problems. Patch by David Mosberger.
815 * The Hurd port got a lot more functionality like AIO, various stdio
816 extensions, etc. Mainly done by Roland McGrath.
818 * mtrace can now lookup symbols in shared libraries.
819 \f
820 Version 2.2.3
822 * Intel's IA-64 math library is largely integrated. It provides fast and
823 accurate implementatations for most basic and standard math functions
824 in float, double, and long double format.
826 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
827 and asin for the 96-bit long double format and asin, log, tan for the
828 128-bit long double format.
830 * The beginning of a last-bit accurate math library by IBM Haifa were added.
831 The basic double functions exist today. Contributed by Abraham Ziv
832 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
833 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
835 * An asynchronous name lookup library was added. The interface is designed
836 after POSIX AIO. The proposal was circulated beforehand to get comments.
837 No negative ones came in. Implemented by Ulrich Drepper.
839 * Port to S390/64bit contributed by Martin Schwidefsky
840 <schwidefsky@de.ibm.com>.
842 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
843 of functions for Linux/IA-64.
845 * The RPC code is now thread safe. Threads can now use the same service
846 of different services at the same time. Patch by Eric Norum
847 <eric.norum@usask.ca> with some help by Ulrich Drepper.
849 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
850 family of functions for Linux/S390.
852 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
853 of functions for Linux/x86.
855 * Port to Linux/CRIS contributed by Axis Communications.
856 \f
857 Version 2.2.2
859 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
860 we can now check for namespace violations and missing declarations. The
861 result is that almost all headers are now Unix-compliant (as defined in
862 the upcoming XPG6). The negative side is that some programs might need
863 corrections, too, if they depend on the incorrect form of the headers in
864 previous versions which defined too many symbols and included too many
865 other headers.
867 * regex now handles multibyte character sets correctly.
868 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
870 * iconv (the program) does now conform to the upcoming XPG6 and handles
871 charmaps. Instead of the charset names the path of charmaps can be
872 provided and the conversion happens based on this data.
873 Contributed by Ulrich Drepper.
875 * The locale program now provides detailed information about the installed
876 locales. While
878 locale -a
880 only lists the names of the supported locales
882 locale -a --verbose
884 provides details such as country, language, and codeset name.
885 Contributed by Ulrich Drepper.
886 \f
887 Version 2.2.1
889 * The gencat program now parses the input file according to the charset
890 selected by the LC_CTYPE category. This is important for stateful
891 character sets. To make generating catalogs easier there is a way
892 to overwrite the charset selected by the locale: before the first
893 message or $ quote line the catalog can contain a line like
895 $ codeset=ISO-8859-2
897 to select the charset (ISO-8859-2 in this case).
899 Implemented by Shinya Hanataka and Ulrich Drepper.
901 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
902 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
903 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
905 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
906 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
908 * The LANGUAGE environment variable is now ignored unless the locale is
909 changed from the default "C" locale.
911 * The usual bug fixes.
912 \f
913 Version 2.2
915 * Greg McGary added runtime support for bounds checking using gcc's
916 new -fbounded-pointers option. ix86 target is complete. PowerPC
917 is in progress.
919 * Thorsten Kukuk added secure mode support to nscd.
921 * The Berkeley db libraries have been removed.
923 Related, the nss_db module is now in a separate package since it
924 obviously requires a database library being available.
926 * Wide character I/O streams implemented by Ulrich Drepper.
928 * Functions from the extended socket API added by Ulrich Drepper.
930 * Functions feenableexcept and fedisableexcept to control the
931 behaviour of individual exceptions have been added by Andreas Jaeger.
933 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
935 * The resolver code has been updated from bind 8.2.3-T5B which supports
936 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
937 and Mark Kettenis.
939 This change could in some situations effect backward compatibility. Since
940 now `_res' is a thread-local instead of a global variable, modifying it
941 in one thread does not have any effect in other threads.
943 The resolver library was also extended to allow IPv6 as the transport
944 protocol for the requests. This work was done by Stig Venaas.
946 * Compatibility code for K&R C compilers has been removed from the
947 header files. A ISO C compiler is needed to use the library
948 (conforming to either C89 or C99 standard).
950 * Complete rewrite of the localedef program to support multibyte character
951 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
952 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
953 Implemented by Ulrich Drepper.
955 Bruno Haible significantly improved the generation and use of the data
956 structures for the wide character tables.
958 * Plural handling in gettext implemented by Ulrich Drepper.
960 * The utmp daemon has been removed.
962 * The port to MIPS-Linux has been finished by Andreas Jaeger.
964 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
965 and Yutaka Niibe.
967 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
969 * POSIX barriers implemented by Kaz Kylheku.
971 * POSIX spawn function family implemented by Ulrich Drepper.
973 * POSIX spinlocks are now available.
975 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
977 * the configure option --enable-kernel=X.Y.Z allows to strip out
978 compatibility for kernel versions before X.Y.Z. This is currently only
979 implemented for Linux.
981 * the sockaddr_in6 structure changed. The IPv6 working group added a new
982 field sin6_scope_id. This means that all programs using IPv6 should be
983 recompiled. Don't expect binary compatibility with previous glibc
984 versions.
986 * various conversion modules for IBM character sets contributed by
987 Masahide Washizawa.
989 * IA-64 port by Jes Sorensen and HJ Lu.
991 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
992 Compiling the GNU C Library for Linux/ia64
993 ******************************************
995 Please refer to the file INSTALL in the same directory as you found
996 this file for general information about configuring and compiling
997 glibc.
999 For general inquiries about glibc under Linux/ia64 please use the
1000 following mailing list linux-ia64@linuxia64.org or one of the relevant
1001 glibc mailing lists.
1003 Recommended Tools for Compilation
1004 =================================
1006 In order for glibc-2.2 to build correctly on the ia64 you need at
1007 least the following versions of the GNU tools (the :
1009 * The Cygnus toolchain snapshot for the ia64 as of August 4
1010 including the provided set of patches. It is however recommend
1011 you use the October 24 toolchain snapshot or a more recent version.
1013 OR alternatively you can try the following (the Cygnus toolchain is
1014 the recommended solution):
1016 * GCC and binutils, GAS and GNU LD out of CVS from
1017 sources.redhat.com as of August 28, 2000 or later. The CVS tree
1018 may require special patches to work properly on the ia64.
1020 Configuring and compiling GNU Libc for Linux/ia64
1021 =================================================
1023 The library requires Linux kernel version 2.4.0-test4-000728 or
1024 later to funtion properly. Besides that it support for debug libraries
1025 is currently untested. Hence the following options
1026 are required for configuring the library:
1028 --disable-debug --enable-kernel=2.4.0
1030 It is also important that you make sure the library picks up the
1031 appropriate kernel header files, if you do not have recent enough
1032 kernel headers in /usr/src/linux/include, you should use the
1033 --with-headers=<path> option to specify the location.
1035 As an example I personally use the following options to configure
1036 the library:
1038 --disable-debug
1039 --disable-cvs
1040 --enable-kernel=2.4.0
1041 --host=ia64-linux
1042 --enable-add-ons=yes
1043 --prefix=/usr
1044 --with-headers=/home/jes/linux/include
1047 Good luck
1049 Jes Sorensen <jes@linuxcare.com>,
1050 November 14th, 2000
1051 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1052 \f
1053 Version 2.1.3
1055 * bug fixes
1057 \f
1058 Version 2.1.2
1060 * bug fixes
1062 \f
1063 Version 2.1.1
1065 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1067 * New xdr functions are added; some rpc functions are now 64bit clean.
1069 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1071 * Fixed known incompatibilities with glibc 2.0.
1073 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1075 * Optimized a number of functions (especially the ELF dynamic loader).
1077 * Update timezone data files.
1079 * lots of charmaps corrections
1081 * some new locale definitions and charmaps
1083 \f
1084 Version 2.1
1086 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1087 conform to POSIX member type requirements. Symbol versions have been
1088 adjusted as needed within the library, and for direct use by applications,
1089 but there is potential for problems if third-party libraries use
1090 struct timeval as part of their interface. This does not present
1091 a problem for X and other "essential" system libraries.
1093 * An additional locale model to support C++ Standard Library locale
1094 model and probably more was implemented by Ulrich Drepper.
1096 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1097 symbol level.
1099 * Miles Bader provided the `argp' function family to support hierachical
1100 command line argument parsing, layered on top of getopt.
1102 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1104 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1105 numbers.
1107 * scanf recognizes the %a and %A format for scanning floating point numbers.
1109 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1110 information and interfaces for the available integer types.
1112 * about 130 new math functions were added to implement the ISO C9x math
1113 library.
1115 * the new header <complex.h> contains definitions of the complex math
1116 functions from ISO C 9X.
1118 * the new header <tgmath.h> defines generic macros to use complex or
1119 real valued functions.
1121 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1123 * Andreas Jaeger provided a test suite for the math library.
1125 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1127 * Ulrich Drepper added character set conversion functions (iconv).
1129 * Optimized string functions have been added.
1131 * The localedata addon is now part of glibc.
1133 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1135 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1136 daemon for NSS (nscd).
1138 Missing a better place here are some numbers on improvements. Under
1139 Linux 2.1.125 un-tar-ing the kernel sources takes
1141 user system wall
1143 using local files 12.19s 6.88s 22.91s
1145 using NIS 13.92s 8.91s 26.34s
1147 using NIS & nscd 10.37s 7.34s 25.30s
1149 using NIS+ 27.57s 30.37s 640.46s
1151 using NIS+ & nscd 10.25s 7.83s 26.51s
1153 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1155 Keep in mind that non-namelookup related operations dominate above times.
1156 It was just a common complain that using NIS+ unpacking the kernel is
1157 horribly slow.
1159 [1] The old nscd implementation is not available anymore since it was
1160 distributed with glibc up to version 2.0.98 and thus is now replaced.
1162 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1164 * Mark Kettenis provided a Hesiod NSS module.
1166 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1167 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1169 * rcmd can now handle netgroups (Dick Streefland).
1171 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1172 Bambrough.
1174 * Support for the IPv6 protocol has been added to the socket API, as per the
1175 latest draft standards.
1177 * Support for Linux 2.2 has been added.
1179 * Interface changes relative to the latest 2.0.x release:
1180 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1181 addseverity NEW: Unix98
1182 alphasort64 NEW: LFS
1183 argp_err_exit_status NEW: argp, GNU ext
1184 argp_error NEW: argp, GNU ext
1185 argp_failure NEW: argp, GNU ext
1186 argp_help NEW: argp, GNU ext
1187 argp_parse NEW: argp, GNU ext
1188 argp_program_bug_address NEW: argp, GNU ext
1189 argp_program_version NEW: argp, GNU ext
1190 argp_program_version_hook NEW: argp, GNU ext
1191 argp_state_help NEW: argp, GNU ext
1192 argp_usage NEW: argp, GNU ext
1193 authdes_create NEW: Secure RPC
1194 authdes_getucred NEW: Secure RPC
1195 authdes_pk_create NEW: Secure RPC
1196 backtrace NEW: GNU ext.
1197 backtrace_symbols NEW: GNU ext.
1198 backtrace_symbols_fd NEW: GNU ext.
1199 cacos NEW: ISO C 9x
1200 cacosf NEW: ISO C 9x
1201 cacosh NEW: ISO C 9x
1202 cacoshf NEW: ISO C 9x
1203 cacoshl NEW: ISO C 9x
1204 cacosl NEW: ISO C 9x
1205 capget NEW: kernel
1206 capset NEW: kernel
1207 carg NEW: ISO C 9x
1208 cargf NEW: ISO C 9x
1209 cargl NEW: ISO C 9x
1210 casin NEW: ISO C 9x
1211 casinf NEW: ISO C 9x
1212 casinh NEW: ISO C 9x
1213 casinhf NEW: ISO C 9x
1214 casinhl NEW: ISO C 9x
1215 casinl NEW: ISO C 9x
1216 catan NEW: ISO C 9x
1217 catanf NEW: ISO C 9x
1218 catanh NEW: ISO C 9x
1219 catanhf NEW: ISO C 9x
1220 catanhl NEW: ISO C 9x
1221 catanl NEW: ISO C 9x
1222 cbc_crypt NEW: Secure RPC
1223 ccos NEW: ISO C 9x
1224 ccosf NEW: ISO C 9x
1225 ccosh NEW: ISO C 9x
1226 ccoshf NEW: ISO C 9x
1227 ccoshl NEW: ISO C 9x
1228 ccosl NEW: ISO C 9x
1229 cexp NEW: ISO C 9x
1230 cexpf NEW: ISO C 9x
1231 cexpl NEW: ISO C 9x
1232 cimag NEW: ISO C 9x
1233 cimagf NEW: ISO C 9x
1234 cimagl NEW: ISO C 9x
1235 clearerr_locked REMOVED
1236 clntunix_create NEW: sunrpc ext
1237 clog NEW: ISO C 9x
1238 clog10 NEW: ISO C 9x
1239 clog10f NEW: ISO C 9x
1240 clog10l NEW: ISO C 9x
1241 clogf NEW: ISO C 9x
1242 clogl NEW: ISO C 9x
1243 conj NEW: ISO C 9x
1244 conjf NEW: ISO C 9x
1245 conjl NEW: ISO C 9x
1246 cpow NEW: ISO C 9x
1247 cpowf NEW: ISO C 9x
1248 cpowl NEW: ISO C 9x
1249 cproj NEW: ISO C 9x
1250 cprojf NEW: ISO C 9x
1251 cprojl NEW: ISO C 9x
1252 creal NEW: ISO C 9x
1253 crealf NEW: ISO C 9x
1254 creall NEW: ISO C 9x
1255 creat64 NEW: LFS
1256 csin NEW: ISO C 9x
1257 csinf NEW: ISO C 9x
1258 csinh NEW: ISO C 9x
1259 csinhf NEW: ISO C 9x
1260 csinhl NEW: ISO C 9x
1261 csinl NEW: ISO C 9x
1262 csqrt NEW: ISO C 9x
1263 csqrtf NEW: ISO C 9x
1264 csqrtl NEW: ISO C 9x
1265 ctan NEW: ISO C 9x
1266 ctanf NEW: ISO C 9x
1267 ctanh NEW: ISO C 9x
1268 ctanhf NEW: ISO C 9x
1269 ctanhl NEW: ISO C 9x
1270 ctanl NEW: ISO C 9x
1271 des_setparity NEW: Secure RPC
1272 ecb_crypt NEW: Secure RPC
1273 endutxent NEW: Unix98
1274 exp10 NEW: ISO C 9x
1275 exp10f NEW: ISO C 9x
1276 exp10l NEW: ISO C 9x
1277 exp2 NEW: ISO C 9x
1278 exp2f NEW: ISO C 9x
1279 exp2l NEW: ISO C 9x
1280 fattach NEW: STREAMS
1281 fdetach NEW: STREAMS
1282 fdim NEW: ISO C 9x
1283 fdimf NEW: ISO C 9x
1284 fdiml NEW: ISO C 9x
1285 feclearexcept NEW: ISO C 9x
1286 fegetenv NEW: ISO C 9x
1287 fegetexceptflag NEW: ISO C 9x
1288 fegetround NEW: ISO C 9x
1289 feholdexcept NEW: ISO C 9x
1290 feof_locked REMOVED
1291 feraiseexcept NEW: ISO C 9x
1292 ferror_locked REMOVED
1293 fesetenv NEW: ISO C 9x
1294 fesetexceptflag NEW: ISO C 9x
1295 fesetround NEW: ISO C 9x
1296 fetestexcept NEW: ISO C 9x
1297 feupdateenv NEW: ISO C 9x
1298 fflush_locked REMOVED
1299 ffsl NEW: GNU ext.
1300 ffsll NEW: GNU ext.
1301 fgetpos64 NEW: LFS
1302 fgets_unlocked NEW: GNU ext.
1303 fileno_locked REMOVED
1304 fma NEW: ISO C 9x
1305 fmaf NEW: ISO C 9x
1306 fmal NEW: ISO C 9x
1307 fmax NEW: ISO C 9x
1308 fmaxf NEW: ISO C 9x
1309 fmaxl NEW: ISO C 9x
1310 fmin NEW: ISO C 9x
1311 fminf NEW: ISO C 9x
1312 fminl NEW: ISO C 9x
1313 fmtmsg NEW: Unix98
1314 fopen64 NEW: LFS
1315 fputc_locked REMOVED
1316 fputs_unlocked NEW: GNU ext.
1317 fread_unlocked NEW: GNU ext.
1318 freopen64 NEW: LFS
1319 fseeko NEW: Unix98
1320 fsetpos64 NEW: LFS
1321 fstatfs64 NEW: LFS
1322 fstatvfs NEW: Unix98
1323 fstatvfs64 NEW: LFS
1324 ftello NEW: Unix98
1325 ftello64 NEW: LFS
1326 ftruncate64 NEW: LFS
1327 ftw64 NEW: LFS
1328 fwrite_unlocked NEW: GNU ext.
1329 gai_strerror NEW: IPv6
1330 gamma_r REMOVED
1331 gammaf_r REMOVED
1332 gammal_r REMOVED
1333 getchar_locked REMOVED
1334 getdate NEW: Unix98
1335 getdate_err NEW: Unix98
1336 getdate_r NEW: GNU ext.
1337 getmsg NEW: STREAMS
1338 getnameinfo NEW: IPv6
1339 getnetname NEW: Secure RPC
1340 getpmsg NEW: STREAMS
1341 getpt NEW: Unix98 PTY
1342 getrlimit64 NEW: LFS
1343 getutxent NEW: Unix98
1344 getutxid NEW: Unix98
1345 getutxline NEW: Unix98
1346 glob64 NEW: GNU ext.
1347 globfree64 NEW: GNU ext.
1348 gnu_get_libc_release NEW: GNU ext.
1349 gnu_get_libc_version NEW: GNU ext.
1350 grantpt NEW: Unix98 PTY
1351 host2netname NEW: Secure RPC
1352 iconv NEW: iconv
1353 iconv_close NEW: iconv
1354 iconv_open NEW: iconv
1355 if_freenameindex NEW: IPv6
1356 if_indextoname NEW: IPv6
1357 if_nameindex NEW: IPv6
1358 if_nametoindex NEW: IPv6
1359 in6addr_any NEW: IPv6
1360 in6addr_loopback NEW: IPv6
1361 inet6_isipv4mapped NEW: IPv6
1362 isastream NEW: STREAMS
1363 iswblank NEW: GNU ext.
1364 key_decryptsession NEW: Secure RPC
1365 key_decryptsession_pk NEW: Secure RPC
1366 key_encryptsession NEW: Secure RPC
1367 key_encryptsession_pk NEW: Secure RPC
1368 key_gendes NEW: Secure RPC
1369 key_get_conv NEW: Secure RPC
1370 key_secretkey_is_set NEW: Secure RPC
1371 key_setnet NEW: Secure RPC
1372 key_setsecret NEW: Secure RPC
1373 llrint NEW: ISO C 9x
1374 llrintf NEW: ISO C 9x
1375 llrintl NEW: ISO C 9x
1376 llround NEW: ISO C 9x
1377 llroundf NEW: ISO C 9x
1378 llroundl NEW: ISO C 9x
1379 log2 NEW: ISO C 9x
1380 log2f NEW: ISO C 9x
1381 log2l NEW: ISO C 9x
1382 lrint NEW: ISO C 9x
1383 lrintf NEW: ISO C 9x
1384 lrintl NEW: ISO C 9x
1385 lround NEW: ISO C 9x
1386 lroundf NEW: ISO C 9x
1387 lroundl NEW: ISO C 9x
1388 lseek64 NEW: LFS
1389 makecontext NEW: Unix98
1390 mempcpy NEW: GNU ext.
1391 mmap64 NEW: LFS
1392 moncontrol REMOVED
1393 modify_ldt NEW: kernel
1394 nan NEW: ISO C 9x
1395 nanf NEW: ISO C 9x
1396 nanl NEW: ISO C 9x
1397 nearbyint NEW: ISO C 9x
1398 nearbyintf NEW: ISO C 9x
1399 nearbyintl NEW: ISO C 9x
1400 netname2host NEW: Secure RPC
1401 netname2user NEW: Secure RPC
1402 nexttoward NEW: ISO C 9x
1403 nexttowardf NEW: ISO C 9x
1404 nexttowardl NEW: ISO C 9x
1405 nftw NEW: Unix98
1406 nftw64 NEW: LFS
1407 open64 NEW: LFS
1408 passwd2des NEW: Secure RPC
1409 pow10 NEW: GNU ext.
1410 pow10f NEW: GNU ext.
1411 pow10l NEW: GNU ext.
1412 pread NEW: Unix98
1413 pread64 NEW: LFS
1414 printf_size NEW: GNU ext.
1415 printf_size_info NEW: GNU ext.
1416 profil_counter REMOVED
1417 pthread_mutexattr_getkind_np REPLACED
1418 pthread_mutexattr_setkind_np REPLACED
1419 ptsname NEW: Unix98 PTY
1420 ptsname_r NEW: Unix98 PTY
1421 putc_locked REMOVED
1422 putchar_locked REMOVED
1423 putgrent NEW: GNU ext.
1424 putmsg NEW: STREAMS
1425 putpmsg NEW: STREAMS
1426 pututxline NEW: Unix98
1427 pwrite NEW: Unix98
1428 pwrite64 NEW: LFS
1429 readdir64 NEW: LFS
1430 readdir64_r NEW: LFS
1431 remquo NEW: ISO C 9x
1432 remquof NEW: ISO C 9x
1433 remquol NEW: ISO C 9x
1434 round NEW: ISO C 9x
1435 roundf NEW: ISO C 9x
1436 roundl NEW: ISO C 9x
1437 rtime NEW: GNU ext.
1438 scalbln NEW: ISO C 9x
1439 scalblnf NEW: ISO C 9x
1440 scalblnl NEW: ISO C 9x
1441 scandir64 NEW: LFS
1442 sendfile NEW: kernel
1443 setcontext NEW: Unix98
1444 setrlimit64 NEW: LFS
1445 setutxent NEW: Unix98
1446 sighold NEW: Unix98
1447 sigignore NEW: Unix98
1448 sigqueue NEW: POSIX.1b
1449 sigrelse NEW: Unix98
1450 sigset NEW: POSIX.1b
1451 sigtimedwait NEW: POSIX.1b
1452 sigwaitinfo NEW: POSIX.1b
1453 sincos NEW: GNU ext.
1454 sincosf NEW: GNU ext.
1455 sincosl NEW: GNU ext.
1456 statfs64 NEW: LFS
1457 statvfs NEW: Unix98
1458 statvfs64 NEW: LFS
1459 strcasestr NEW: GNU ext.
1460 strtoimax NEW: ISO C 9x
1461 strtoumax NEW: ISO C 9x
1462 strverscmp NEW: GNU ext.
1463 svcauthdes_stats NEW: Secure RPC
1464 svcunix_create NEW: sunrpc etx
1465 svcunixfd_create NEW: sunrpc ext
1466 swapcontext NEW: Unix98
1467 tcgetsid NEW: Unix98 PTY
1468 tdestroy NEW: GNU ext.
1469 tgamma NEW: ISO C 9x
1470 tgammaf NEW: ISO C 9x
1471 tgammal NEW: ISO C 9x
1472 tmpfile64 NEW: LFS
1473 trunc NEW: ISO C 9x
1474 truncate64 NEW: LFS
1475 truncf NEW: ISO C 9x
1476 truncl NEW: ISO C 9x
1477 umount2 NEW: kernel
1478 unlockpt NEW: Unix98 PTY
1479 updwtmpx NEW: Unix98
1480 user2netname NEW: Secure RPC
1481 utmpxname NEW: Unix98
1482 versionsort NEW: GNU ext.
1483 versionsort64 NEW: GNU ext.
1484 waitid NEW: Unix98
1485 wcscasecmp NEW: GNU ext.
1486 wcsncasecmp NEW: GNU ext.
1487 wcsnlen NEW: GNU ext.
1488 wcstoimax NEW: ISO C 9x
1489 wcstoll NEW: ISO C 9x
1490 wcstoull NEW: ISO C 9x
1491 wcstoumax NEW: ISO C 9x
1492 wcswcs NEW: Unix98
1493 wordexp NEW: POSIX.2
1494 wordfree NEW: POSIX.2
1495 write_profiling REMOVED
1496 xdecrypt NEW: Secure RPC
1497 xdr_authdes_cred NEW: Secure RPC
1498 xdr_authdes_verf NEW: Secure RPC
1499 xdr_cryptkeyarg NEW: Secure RPC
1500 xdr_cryptkeyarg2 NEW: Secure RPC
1501 xdr_cryptkeyres NEW: Secure RPC
1502 xdr_getcredres NEW: Secure RPC
1503 xdr_key_netstarg NEW: Secure RPC
1504 xdr_key_netstres NEW: Secure RPC
1505 xdr_keybuf NEW: Secure RPC
1506 xdr_keystatus NEW: Secure RPC
1507 xdr_netnamestr NEW: Secure RPC
1508 xdr_sizeof NEW: Secure RPC
1509 xdr_unixcred NEW: sunrpc ext
1510 xencrypt NEW: Secure RPC
1511 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1512 \f
1513 Version 2.0.6
1515 * more bug fixes
1517 \f
1518 Version 2.0.5
1520 * more bug fixes
1522 * inet_ntoa is thread-safe
1524 * updwtmp is moved from libutil to libc
1526 * rewrite of cbrt function
1528 * update of timezone data
1529 \f
1530 Version 2.0.4
1532 * more bug fixes
1533 \f
1534 Version 2.0.3
1536 * more bug fixes
1537 \f
1538 Version 2.0.2
1540 * more bug fixes
1542 * add atoll function
1544 * fix complex problems in Berkeley DB code
1546 * fix math functions
1547 \f
1548 Version 2.0.1
1550 * fixed lots of header problems (especially Linux/GNU specific)
1552 * dynamic loader preserves all registers
1554 * Roland McGrath provided support for handling of auxiliary objects in
1555 the ELF dynamic loader.
1557 * support for parallel builds is improved
1558 \f
1559 Version 2.0
1561 * GNU extensions are no longer declared by default. To enable them you
1562 must define the macro `_GNU_SOURCE' in your program or compile with
1563 `-D_GNU_SOURCE'.
1565 * The library has changed from using GNU ld symbol aliases to using weak
1566 symbols where available. The ELF object file format supports weak
1567 symbols; GNU ld also supports weak symbols in the a.out format. (There
1568 is also now support for other GNU ld extensions in ELF. Use the
1569 `--with-elf' option to configure to indicate you have ELF, and
1570 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1571 of many files which contained only symbol aliases, reducing the size of
1572 the source and the compiled library; many other files were renamed to
1573 less cryptic names previously occupied by the symbol alias files.
1574 There is a new header file <elf.h> for programs which operate on
1575 files in the ELF format.
1577 * Converted to Autoconf version 2, so `configure' has more options.
1578 Run `configure --help' to see the details.
1580 * The library can now be configured to build profiling, highly-optimized
1581 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1582 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1583 `configure' enable building these extra libraries. The shared library is
1584 built by default when using both ELF and GNU ld. When shared libraries
1585 are enabled, the new library `-ldl' is available for arbitrary run-time
1586 loading of shared objects; its interface is defined in <dlfcn.h>. The
1587 new header file <link.h> gives access to the internals of the run-time
1588 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1589 application of same name on other systems and it provides information
1590 about dynamically linked binaries.
1592 * The C library now provides the run-time support code for profiling
1593 executables compiled with `-pg'. Programs can control the profiling code
1594 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1595 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1596 the support for this file format was contributed by David Mosberger-Tang.
1598 * The math code has been replaced with a math library based on fdlibm from
1599 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1600 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1601 functions. The math functions now reside in a separate library, so
1602 programs using them will need to use `-lm' their linking commands.
1604 * John C. Bowman contributed optimized ix87 assembler inline functions.
1606 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1607 mechanism similar to that found in Solaris 2. This is now used for the
1608 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1609 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1610 file controls what services are used for each individual database. This
1611 works by loading shared libraries with names specified in `nsswitch.conf',
1612 so service modules can be changed or added at any time without even
1613 relinking any program. Currently there are the file, db, and NIS based
1614 NSS services available.
1616 * The new functions `strtoq' and `strtouq' parse integer values from
1617 strings, like `strtol' and `strtoul', but they return `long long int' and
1618 `unsigned long long int' values, respectively (64-bit quantities).
1620 * The new functions `strtof' and `strtold' parse floating-point values from
1621 strings, like `strtod', but they return `float' and `long double' values,
1622 respectively (on some machines `double' and `long double' are the same).
1624 * Ulrich Drepper has contributed new implementations of the floating-point
1625 printing and reading code used in the `printf' family of functions and
1626 `strtod', `strtof', and `strtold'. These new functions are perfectly
1627 accurate, and much faster than the old ones.
1629 * The implementation of the POSIX locale model was completely rewritten by
1630 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1631 to compile the POSIX locale definition.
1633 * The former dummy implementations of the strcoll and strxfrm function are
1634 now replaced by fully functional code contributed by Ulrich Drepper. The
1635 collation information comes from the POSIX locale definitions.
1637 * The new header <langinfo.h> defines an interface for accessing
1638 various locale-dependent data (using the locale chosen with `setlocale').
1640 * Ulrich Drepper has contributed a new suite of functions for operation on
1641 wide-character and multibyte-character strings, in <wchar.h>;
1642 and classification and case conversion of wide characters, in <wctype.h>.
1643 These new functions are conforming to the ISO C, Amendement 1 specification.
1645 * There is now a second implementation of the standard I/O library available.
1646 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1647 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1649 * You can now use positional parameter specifications in format strings
1650 for the `printf' and `scanf' families of functions. For example,
1651 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1652 ``Number 6, Mr Jones''. This is mainly useful when providing different
1653 format strings for different languages, whose grammars may dictate
1654 different orderings of the values being printed. To support this
1655 feature, the interface for `register_printf_handler' has changed; see
1656 the header file <printf.h> for details.
1658 * The `printf' and `scanf' families of functions now understand a new
1659 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1660 to group numbers as indicated by the locale; for `scanf' and friends, this
1661 says to accept as valid only a number with all the proper grouping
1662 separators in the right places. In the default "C" locale, numbers are
1663 not grouped; but locales for specific countries will define the usual
1664 conventions (i.e. separate thousands with `,' in the US locale).
1666 * The pgrp functions have been regularized, slightly incompatibly but much
1667 less confusingly. The core functions are now `getpgid' and `setpgid',
1668 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1669 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1670 provided for compatibility. There is no longer an incompatible `getpgrp'
1671 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1673 * The new header file <fts.h> and suite of functions simplify programs that
1674 operate on directory trees. This code comes from 4.4 BSD.
1676 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1677 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1678 NSS scheme used in glibc.
1680 * There is a new malloc debugging hook `__memalign_hook'.
1682 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1683 `unsigned int' in <sys/types.h>. These are for compatibility only and
1684 their use is discouraged.
1686 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1687 done differently, so that it works even without GNU ld.
1689 * New function `euidaccess' checks allowed access to a file like `access',
1690 but using the effective IDs instead of the real IDs.
1692 * The time zone data files have been updated for the latest and greatest
1693 local time conventions of the countries of the world.
1695 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1696 see <dirent.h>.
1698 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1699 for formatting floating-point numbers. They are provided only for
1700 compatibility; new programs should use `sprintf' instead. There are
1701 also equivalent function for the `long double' floating-point type and
1702 all functions also exist in a reentrant form.
1704 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1705 functions for maintaining the login-record files (primarily of use to
1706 system programs such as `login'), and convenient functions for
1707 allocating and initializing a pseudo-terminal (pty) device.
1709 * Ulrich Drepper has contributed new support for System V style
1710 shared memory and IPC on systems that support it.
1712 * Ulrich Drepper has contributed several miscellaneous new functions found
1713 in System V: The `hsearch' family of functions provide an effective
1714 implementation of hash tables; `a64l' and `l64a' provide a very simple
1715 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1716 number generator.
1718 * Ulrich Drepper has contributed new reentrant counterparts for the
1719 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1721 * Ulrich Drepper has contributed new, highly-optimized versions of several
1722 string functions for the i486/Pentium family of processors.
1724 * Ulrich Drepper has updated the Linux-specific code, based largely
1725 on work done in Hongjiu Lu's version of GNU libc for Linux.
1726 The GNU library now supports Linux versions 2.0.10 and later,
1727 using the ELF object file format (i[3456]86-*-linux).
1729 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1731 * David Mosberger-Tang and Richard Henderson have ported the C library
1732 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1733 dynamic linking support for ELF/Alpha.
1735 * Richard Henderson contributed several Alpha optimized assembler function
1736 for arithmetic and string handling.
1738 * Ulrich Drepper has contributed a new set of message catalog functions to
1739 support multiple languages using the <libintl.h> interface, for use with
1740 his new package GNU gettext. Translation volunteers have contributed
1741 catalogs of the library's messages in Spanish, German, and Korean.
1743 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1744 program and the `catgets' function for reading the catalog files it
1745 creates. (The <libintl.h> interface is preferred; we include the
1746 <nl_types.h> interface using `catgets' only for source compatibility with
1747 programs already written to use it.)
1749 * New header file <values.h> gives SVID-compatible names for <limits.h>
1750 constants.
1752 * Various new macros, declarations, and small header files for compatibility
1753 with 4.4 BSD.
1755 * New function `group_member' is a convenient way to check if a process has
1756 a given effective group ID.
1758 * When using GCC 2.7 and later, the socket functions are now declared in a
1759 special way so that passing an argument of type `struct sockaddr_in *',
1760 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1761 `struct sockaddr *' type, does not generate a type-clash warning.
1763 * New function `error' declared in header file <error.h> is a convenient
1764 function for printing error messages and optionally exiting; this is the
1765 canonical function used in GNU programs. The new functions `err', `warn',
1766 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1767 doing the same thing.
1769 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1770 POSIX.2 `glob' function to do ~ and {...} expansion.
1772 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1773 `clearenv' which is used in POSIX.9 is also available.
1775 * New function `getsid' returns session ID number on systems that support it.
1777 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1778 files <db.h> and <mpool.h> provide a rich set of functions for several
1779 types of simple databases stored in memory and in files, and <ndbm.h> is
1780 an old `ndbm'-compatible interface using the `db' functions. Link with
1781 `-ldb' to get these functions.
1783 * New macro `strdupa' copies a string like `strdup', but uses local stack
1784 space from `alloca' instead of dynamic heap space from `malloc'.
1786 * New function `strnlen' is like `strlen' but searches only a given maximum
1787 number of characters for the null terminator. `stpncpy', `strndup' and
1788 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1789 function.
1791 * New function `statfs' in header <sys/statfs.h>.
1793 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1794 provide convenient functions for operating on blocks of null-terminated
1795 strings.
1797 * A new suite of functions in <utmp.h> handle all the details of reading
1798 and writing the utmp file.
1800 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1801 Thorsten Kukuk.
1803 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1804 completely POSIX compliant and also implemented the extended functionality
1805 to handle alternate digit representation and alternate era date formats.
1807 * Ulrich Drepper provided an implementation of the `strptime' function
1808 defined in XPG4.2 which transforms a string into a `struct tm' value.
1810 * Paul Eggert provided the tzselect shell script as part of the timezone
1811 code. The shell script makes it easy to select the correct timezone
1812 specification.
1814 * The implementation of the malloc family of functions is completely replaced
1815 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1816 The implementation uses the mmap function (if available) and it is
1817 optimized for the use in multi threaded programs.
1819 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1820 functions. This new functionality is usable by specifying a special
1821 salt string and it is compatible with implementation on *BSD systems.
1823 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1824 `getsubopt' to handle second level command line options, `bsd_signal'
1825 to access BSD style `signal' functionality, the obsolete `regexp' style
1826 expression matcher.
1828 * the `lchown' function is available on system which support this
1829 functionality.
1831 * The implementation of the shadow password handling function was contributed
1832 by Ulrich Drepper.
1834 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1836 * POSIX.1g support was added. The <sys/select.h> header is available,
1837 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1838 implementation of `getaddrinfo'.
1839 \f
1840 Version 1.09
1842 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1844 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1845 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1847 * The new function `daemon' from 4.4 BSD is useful for server programs that
1848 want to put themselves in the background.
1850 * Joel Sherrill has contributed support for several standalone boards that
1851 run without an operating system.
1853 * `printf', `scanf' and friends now accept a `q' type modifier for long
1854 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1856 * All of the code taken from BSD (notably most of the math and networking
1857 routines) has been updated from the BSD 4.4-Lite release.
1859 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1861 * The new functions `getdomainname' and `setdomainname' fetch or change the
1862 YP/NIS domain name. These are system calls which exist on systems which
1863 have YP (aka NIS).
1865 * The time zone data files have been updated for the latest international
1866 conventions.
1868 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1869 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1870 \f
1871 Version 1.08
1873 * The C library now includes support for Sun RPC, from Sun's free
1874 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1875 are included. (There is still no support for YP.)
1877 * Tom Quinn has contributed a port of the C library to SGI machines running
1878 Irix 4 (mips-sgi-irix4).
1880 * The new `lockf' function is a simplified interface to the locking
1881 facilities of `fcntl', included for compatibility.
1883 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1885 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1887 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1888 compatibility.
1890 * The error message printed by `assert' for a failed assertion now includes
1891 the name of the program (if using GNU ld) and the name of the calling
1892 function (with versions of GCC that support this).
1894 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1896 * The library now includes the <sys/mman.h> header file and memory
1897 management functions `mmap', `munmap', `mprotect', `msync', and
1898 `madvise', on systems that support those facilities.
1900 * The interface for `mcheck' has changed slightly: the function called to
1901 abort the program when an allocation inconsistency is detected now takes
1902 an argument that indicates the type of failure. The new function
1903 `mprobe' lets you request a consistency check for a particular block at
1904 any time (checks are normally done only when you call `free' or `realloc'
1905 on a block).
1907 * It is now possible to easily cross-compile the C library, building on one
1908 system a library to run on another machine and/or operating system. All
1909 you need to do is set the variable `HOST_CC' in `configparms' to the
1910 native compiler for programs to run on the machine you are building on (a
1911 few generator programs are used on Unix systems); set `CC' to the
1912 cross-compiler.
1914 * The new function `fexecve' (only implemented on the GNU system) executes
1915 a program file given a file descriptor already open on the file.
1916 \f
1917 Version 1.07
1919 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1920 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1922 * You can set the variable `libprefix' in `configparms' to specify a prefix
1923 to be prepended to installed library files; this makes it easy to install
1924 the GNU C library to be linked as `-lgnuc' or whatever.
1926 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1927 copies a limited number of characters from a string, and returns the
1928 address of the last character written.
1930 * You no longer need to check for whether the installed `stddef.h' is
1931 compatible with the GNU C library. configure now checks for you.
1933 * You can now define a per-stream `fileno' function to convert the
1934 stream's cookie into an integral file descriptor.
1936 * ``malloc (0)'' no longer returns a null pointer. Instead, it
1937 allocates zero bytes of storage, and returns a unique pointer which
1938 you can pass to `realloc' or `free'. The behavior is undefined if
1939 you dereference this pointer.
1941 * The C library now runs on Sony NEWS m68k machines running either
1942 NewsOS 3 or NewsOS 4.
1944 * The new `syscall' function is a system-dependent primitive function
1945 for invoking system calls. It has the canonical behavior on Unix
1946 systems, including unreliable return values for some calls (such as
1947 `pipe', `fork' and `getppid').
1949 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
1950 to `EAGAIN', which is the preferred name. On systems whose kernels
1951 use two distinct codes, the C library now translates EWOULDBLOCK to
1952 EAGAIN in every system call function.
1953 \f
1954 Version 1.06
1956 * The GNU C Library Reference Manual is now distributed with the library.
1957 `make dvi' will produce a DVI file of the printed manual.
1958 `make info' will produce Info files that you can read on line using C-h i
1959 in Emacs or the `info' program.
1960 Please send comments on the manual to bug-glibc-manual@gnu.org.
1962 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
1964 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
1966 * Jason Merrill has contributed a port to the Sequent Symmetry running
1967 Dynix version 3 (i386-sequent-dynix).
1969 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
1970 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
1972 * New function `memory_warnings' lets you arrange to get warnings when
1973 malloc is running out of memory to allocate, like Emacs gives you.
1975 * The C library now contains the relocating allocator used in Emacs 19 for
1976 its editing buffers. This allocator (ralloc) minimizes allocation
1977 overhead and fragmentation by moving allocated regions around whenever it
1978 needs to. You always refer to a ralloc'd region with a "handle" (a
1979 pointer to a pointer--an object of type `void **').
1981 * There is a new `printf' format: `%m' gives you the string corresponding
1982 to the error code in `errno'.
1984 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
1985 or `%[' conversion, but instead of filling in a fixed-sized buffer you
1986 pass, the `a' modifier says to fill in a `char **' you pass with a
1987 malloc'd string.
1989 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
1990 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
1991 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
1993 * `mkstemp' is a traditional Unix function to atomically create and open a
1994 uniquely-named temporary file.
1995 \f
1996 Version 1.05
1998 * The standard location for the file that says what the local timezone is
1999 has changed again. It is now `/usr/local/etc/localtime' (or more
2000 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2002 * The distribution no longer contains any files with names longer than 14
2003 characters.
2005 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2006 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2008 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2009 \f
2010 Version 1.04
2012 * The configuration process has changed quite a bit. The `configure'
2013 script is now used just like the configuration scripts for other GNU
2014 packages. The `sysdeps' directory hierarchy is much rearranged.
2015 The file `INSTALL' explains the new scheme in detail.
2017 * The header files no longer need to be processed into ANSI C and
2018 traditional C versions. There is just one set of files to install, and
2019 it will work with ANSI or old C compilers (including `gcc -traditional').
2021 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2022 MIPS DECStation running Ultrix 4.
2024 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2025 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2026 made itself into a shared library.
2028 * Yet further improved support for the i386, running 4.3 BSD-like systems
2029 (such as Mach 3 with the Unix single-server), or System V.
2031 * New function `strncasecmp' to do case-insensitive string comparison
2032 with limited length.
2034 * New function `strsep' is a reentrant alternative to `strtok'.
2036 * New functions `scandir' and `alphasort' for searching directories.
2038 * New function `setenv' is a better interface to `putenv'.
2040 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2041 function for traversing a directory tree.
2043 * The GNU obstack package is now also part of the C library.
2044 The new function `open_obstack_stream' creates a stdio stream that
2045 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2046 formatted output directly to an obstack.
2048 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2049 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2051 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2053 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2054 things to your strings.
2056 * There are some new test programs: test-fseek, testmb, and testrand.
2058 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2059 These ports are not finished, but are a good starting place for really
2060 supporting those systems.
2062 * `/etc/localtime' is now the standard location for the file that says what
2063 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2064 This follows the general principle that `/etc' is the place for all local
2065 configuration files.
2067 * The C library header files now use `extern "C"' when used by the C++
2068 compiler, so the C library should now work with C++ code.
2070 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2071 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2072 in <strings.h>.)
2074 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2075 function which uses the `merge sort' algorithm, and is said to be
2076 significantly faster than the old GNU `qsort' function. Merge sort is
2077 now the standard `qsort' function. The new algorithm can require a lot
2078 of temporary storage; so, the old sorting function is called when the
2079 required storage is not available.
2081 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2082 provides the Unix `crypt' function, plus some other entry points.
2084 * The code and header files taken from 4.4 BSD have been updated with the
2085 latest files released from Berkeley.
2086 \f
2087 ----------------------------------------------------------------------
2088 Copyright information:
2090 Copyright (C) 1992-2009, 2010, 2011 Free Software Foundation, Inc.
2092 Permission is granted to anyone to make or distribute verbatim copies
2093 of this document as received, in any medium, provided that the
2094 copyright notice and this permission notice are preserved,
2095 thus giving the recipient permission to redistribute in turn.
2097 Permission is granted to distribute modified versions
2098 of this document, or of portions of it,
2099 under the above conditions, provided also that they
2100 carry prominent notices stating who last changed them.
2101 \f
2102 Local variables:
2103 version-control: never
2104 fill-column: 76
2105 End: