1 GNU C Library NEWS -- history of user-visible changes. 2011-4-1
2 Copyright (C) 1992-2009, 2010, 2011 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.
10 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle
12 * The following bugs are resolved with this release:
14 11724, 12445, 12454, 12460, 12469, 12489, 12509, 12510, 12583, 12587, 12597
18 * The following bugs are resolved with this release:
20 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11611, 11640,
21 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979, 12005,
22 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113, 12140,
23 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348, 12378,
26 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
28 * POWER7 optimizations: memset, memcmp, strncmp
30 * New optimized string functions for x86-64: strnlen (SSE2),
31 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
32 Implemented by Ulrich Drepper.
36 * The following bugs are resolved with this release:
38 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915, 10918,
39 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001, 11007,
40 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070, 11093,
41 11115, 11120, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
42 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
43 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
44 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
45 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
47 * New interfaces: pthread_getname_np, pthread_setname_np
49 * New Linux interface: recvmmsg
51 * STT_GNU_IFUNC implemented for Sparc by David Miller.
53 * The dynamic linker now recognizes supported ABI versions from the
54 EI_ABIVERSION field in the ELF header.
55 Implemented by Ulrich Drepper.
57 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
58 will not be used to fill in password fields in the passwd.byname replies.
59 Instead it is used to synthesize the shadow.byname table, should it be
60 missing. This is a useful mode in some installations involving Solaris.
61 Implemented by Ulrich Drepper.
63 * New locales: kok_IN, sq_MK, cv_RU
67 * The following bugs are resolved with this release:
69 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
70 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
71 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
72 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
73 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
74 10789, 10817, 10823, 10840, 10847
76 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
78 Implemented by Ulrich Drepper.
80 * Checking version of longjmp added that fails if an uninitialized stack
81 frame would be created. Implemented by Ulrich Drepper.
83 * STT_GNU_IFUNC is now supported in static executables.
84 Implemented by H.J. Lu.
86 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
88 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
89 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
90 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
91 Contributed by H.J. Lu.
93 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
94 Implemented by Ulrich Drepper.
96 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
98 Contributed by H.J. Lu.
100 * Support for fma instruction in AVX on x86-64.
101 Implemented by H.J. Lu and Ulrich Drepper.
103 * AVX support in x86-64 auditing support in ld.so.
104 Implemented by H.J. Lu.
106 * STB_GNU_UNIQUE support added.
107 Implemented by Ulrich Drepper.
109 * Implement second fallback mode for optimized DNS lookup for even more
110 broken environments. If two requests from the same port are not
111 handled correctly close the socket and open a new one before sending
112 the second request. The 'single-request-reopen' option in /etc/resolv.conf
113 can be used to select this mode right away, instead of rediscovering the
114 necessity is every process again.
115 Implemented by Ulrich Drepper.
117 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
118 Implemented by Adam Tkac.
120 * Optimized iconv conversions for S390x.
121 Implemented by Andreas Krebbel.
123 * Using condvars with PI mutexes is now more efficient due to kernel
124 support for requeueing to PI futexes. NPTL support added for x86-64.
125 Implemented by Ulrich Drepper.
127 * New locales: ps_AF, my_MM
131 * The following bugs are resolved with this release:
133 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
134 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
135 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
136 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
137 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
139 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
140 Implemented by Ulrich Drepper.
142 * New Linux interfaces: accept4, fallocate, fallocate64.
143 Implemented by Ulrich Drepper.
145 * Correct declarations of string function when used in C++ code. This
146 could lead to compile errors for invalid C++ code.
148 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
151 * New POSIX 2008 interface: psiginfo
152 Implemented by Ulrich Drepper.
154 * New ISO C++1x interfaces: quick_exit, at_quick_exit
155 Implemented by Ulrich Drepper.
157 * Support for selecting between multiple function definitions at runtime
158 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
160 * The libcrypt library can now use the hash function implementations in
161 NSS. Implemented by Ulrich Drepper.
163 * The malloc implementation can be compiled to be less memory efficient
164 but higher performing in multi-threaded programs.
165 Implemented by Ulrich Drepper.
167 * New locales: nan_TW@latin, ks_IN
169 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
170 Implemented by Ulrich Drepper.
172 * Extended printf hook support. It is possible to use user-defined types
173 and extend existing format specifiers.
174 Implemented by Ulrich Drepper.
176 * Handling for group shadow files has been added.
177 Implemented by Ulrich Drepper.
179 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
180 servers (the case, e.g., for some people using the built-in DNS
181 server in ADSL modems/routers). There is a once-per-process timeout
182 in case of a broken server. To avoid it, users can run nscd or put
183 'options single-request' in /etc/resolv.conf.
184 Implemented by Ulrich Drepper.
188 * The following bugs are resolved with this release:
190 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
191 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
192 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
193 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
194 6968, 6974, 6980, 6995, 7008, 7009, 7029
196 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
197 up at the same time. Implemented by Ulrich Drepper.
199 * TLS descriptors for LD and GD on x86 and x86-64.
200 Implemented by Alexandre Oliva.
202 * getaddrinfo now handles DCCP and UDPlite.
203 Implemented by Ulrich Drepper.
205 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
206 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
207 Implemented by Ulrich Drepper.
209 * New implementation of memmem, strstr, and strcasestr which is O(n).
210 Implemented by Eric Blake.
212 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
214 * Implement "e" option for popen to open file descriptor with the
215 close-on-exec flag set. Implemented by Ulrich Drepper.
217 * Implement "b" mode for fmemopen. In this mode writes writes don't
218 implicitly add a NUL byte and seeks from the end of the buffer really
219 use the buffer end, not the string length as the basis.
220 Implemented by Ulrich Drepper.
222 * Many functions, exported and internal, now atomically set the close-on-exec
223 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
225 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
227 Implemented by Pravin Satpute.
229 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
233 * The following bugs are resolved with this release:
235 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
236 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
237 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
238 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
239 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
240 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
241 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
243 * New locales: bo_CN, bo_IN, shs_CA.
245 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
247 * Sorting rules for some Indian languages (Devanagari and Gujarati).
248 Implemented by Pravin Satpute.
250 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
252 * nscd caches now all timeouts for DNS entries
253 Implemented by Ulrich Drepper.
255 * nscd is more efficient and wakes up less often.
256 Implemented by Ulrich Drepper.
258 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
259 vdprintf, and obstack_vprintf.
260 Implemented by Jakub Jelinek.
262 * Faster memset for x86-64.
263 Implemented by Harsha Jagasia and H.J. Lu.
265 * Faster memcpy on x86.
266 Implemented by Ulrich Drepper.
268 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
269 Implemented by Ulrich Drepper.
271 * Faster sqrt and sqrtf implemention for some PPC variants.
272 Implemented by Stephen Munroe.
276 * The following bugs are resolved with this release:
278 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
279 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
280 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
281 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
282 5071, 5103, 5104, 5112, 5113, 5184, 5186
284 * More checking functions: fread, fread_unlocked, open*, mq_open.
285 Implemented by Jakub Jelinek and Ulrich Drepper.
287 * Extend fortification to C++. Implemented by Jakub Jelinek.
289 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
290 by not recognizing 'a' as a modifier when those specs are requested.
291 Implemented by Jakub Jelinek.
293 * PPC optimizations to math and string functions.
294 Implemented by Steven Munroe.
296 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
297 options to be passed. Implemented by Ulrich Drepper.
299 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
301 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
302 Implemented by Ulrich Drepper.
304 * Handle private futexes in the NPTL implementation.
305 Implemented by Jakub Jelinek and Ulrich Drepper.
307 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
308 Implemented by Roland McGrath and Ulrich Drepper.
310 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
312 * SHA-256 and SHA-512 based password encryption.
313 Implemented by Ulrich Drepper.
315 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
316 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
319 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
320 Implemented by Ulrich Drepper.
324 * The following bugs are resolved with this release:
326 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
327 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
328 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
329 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
330 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
331 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
332 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
335 * New Linux interfaces: epoll_pwait, sched_getcpu.
337 * New generic interfaces: strerror_l.
339 * nscd can now cache the services database. Implemented by Ulrich Drepper.
343 * The following bugs are resolved with this release:
345 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
346 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
347 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
348 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
349 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
350 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
351 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
352 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
353 3225, 3251, 3252, 3253, 3273
355 * For Linux, the sorting of addresses returned by getaddrinfo now also
356 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
357 Implemented by Ulrich Drepper.
359 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
360 Implemented by Ulrich Drepper.
362 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
364 * New iconv module for MIK. Contributed by Alexander Shopov.
366 * For sites with broken group and/or passwd database, the auto-propagate
367 option of nscd can prevent creating ID lookup entries from the results
368 of a name lookup and vice versa. This usually is no problem but some
369 site might have problems with the default behavior.
370 Implemented by Ulrich Drepper.
372 * Iterating over entire database in NIS can be slow. With the
373 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
374 to trade time for memory. The entire database will be read at once.
375 Implemented by Ulrich Drepper.
377 * The interfaces introduced in RFC 3542 have been implemented by
380 * Support for the new ELF hash table format was added by Ulrich Drepper.
382 * Support for priority inheritance mutexes added by Jakub Jelinek and
385 * Support for priority protected mutexes added by Jakub Jelinek.
387 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
388 or_IN, csb_PL, fy_NL, sr_ME.
392 * More overflow detection functions.
394 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
395 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
397 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
398 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
399 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
400 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
401 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
402 by Masahide Washizawa.
404 * It is now possible to install audit libraries for the dynamic linker using
405 LD_AUDIT. Implemented by Ulrich Drepper.
407 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
408 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
409 For a libc and libpthread that works well on Linux 2.4 kernels, we
410 recommend using the stable 2.3 branch.
412 * The new function open_wmemstream acts like open_memstream,
413 but uses a wchar_t wide character buffer.
415 * The new function ppoll is an improved version of poll, similar to pselect.
417 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
418 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
419 renameat, unlinkat, linkat, symlinkat, readlinkat.
421 * New Linux kernel system calls: unshare,
422 inotify_init, inotify_add_watch, inotify_rm_watch.
424 * The euidaccess function is now also known by the alias eaccess,
425 for compatibility with some other systems.
427 * Timezone data updated to 2006b version.
431 * The following bugs are resolved with this release:
433 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
434 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
435 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
436 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
437 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
438 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
440 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
442 * As of this release, GCC 4 can be used to compile the C Library.
444 * Timezone data updated to 2005m version.
448 * The following bugs are resolved with this release:
450 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
451 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
452 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
453 777, 787, 821, 822, 823, 825
455 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
459 * Support for RFC 3678. Real implementations exist only for Linux so far.
460 Implemented by Ulrich Drepper.
462 * nscd can now cache entries persistently. Expiring entries are reloaded.
463 For speedups the cache can be shared in memory with client processes.
464 Implemented by Ulrich Drepper.
466 * nscd can now perform SELinux checks.
467 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
469 * getaddrinfo queries are now cached. Canonical name lookup is performed
471 Implemented by Ulrich Drepper.
473 * The nothrow function attribute is used when headers are used by gcc when
474 compiling C code. This can avoid significant amounts of exception
477 * The malloc functions perform more error checking and are stricter when
478 it comes to reacting on errors. The default action is to terminate
479 the process after showing an error message. Implemented by Ulrich Drepper.
481 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
482 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
484 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
485 namespaces using the new function dlmopen(). This feature is of course,
486 like most other dynamic loading functionality, not available in statically
487 linked applications. Implemented by Ulrich Drepper.
489 * Low-overhead boundary checking variants of string and some stdio functions
490 were added. These are to be used in conjunction with a gcc patch by
491 Jakub Jelinek which adds calls to these functions if possible.
492 Implemented by Jakub Jelinek and Ulrich Drepper.
494 * Old code for several operating systems and machine architectures that
495 have not been in working condition in a long time have been removed from
496 the main source tree maintained by the GNU C Library's maintainers.
497 These files are now reside in the separate `ports' source module
498 that is usable as an add-on when building the library.
502 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
503 interrogate the dynamic linker, compatible with the Solaris interface.
505 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
506 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
508 * getifaddrs now uses the netlink interface on Linux to get its information.
509 Implemented by Thorsten Kukuk.
511 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
512 Implemented by Ulrich Drepper.
514 * support for non-executable stacks on x86 has been added. Changes mostly
517 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
520 * getaddrinfo now performs destination address selection according to
525 * Thread-safe interfaces for many functions that access locale data
526 were added in version 2.3, but these features were omitted from NEWS.
527 Many functions have variants with an `_l' suffix that take a `locale_t'
528 object as a parameter rather than consulting the current locale.
529 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
530 create and maintain `locale_t' objects. Additionally, the new function
531 `uselocale' sets "the current locale" (as used by functions not so
532 parameterized) set for an individual thread. These features were added
533 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
535 * The functions getresuid, getresgid, setresuid, and setresgid, which
536 have long been available on Linux, are now declared in <unistd.h>
537 and are now also available on the Hurd.
539 * ELF thread-local storage support (TLS) now works on x86-64.
541 * The new dynamic string token $LIB is expanded in shared library names.
542 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
544 * Aldy Hernandez contributed complete software floating point support for
545 PowerPC machines with no FPU.
547 * fexecve is implemented on Linux.
549 * The `btowc' function should work at least twice as fast due to
550 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
552 * With approriate thread add-ons cancelable functions are now implemented
553 in libc.so as well. No need to call the function in libpthread. This
554 change allowed to finally disable the incorrect and expensive handling
555 of weak definition in ld.so.
557 * Yet more PLT entries in libc.so have been removed. We finally arrived
558 at the bare minimum. Startup times improved appropriately.
560 * Support for the new Linux/x86 system call interface was added. The
561 AT_SYSINFO auxiliary vector entry is recognized and handled.
565 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
568 * iconv (the program and the interface) now accepts empty names (excluding
569 options like //TRANSLIT) to mean "use charset of current locale".
571 * localedef can now transliterate characters in strings which are not in
572 the provided charmap. The information from the input locale is used.
574 * Prelinking support was added for ELF targets. This requires additional
575 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
577 * Read-only stdio streams now use mmap to speed up operation by eliminating
578 copying and buffer underflows. To use add 'm' to the mode string of
579 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
581 * The malloc functions were completely rewritten by Wolfram Gloger based
582 on Doug Lea's malloc-2.7.0.c.
584 * Isamu Hasegawa contributed a completely new and POSIX-conformant
585 implementation of regex.
587 * Bruno Haible upgraded the iconv and locale implementation to support
590 * Contents of the LC_* and LANG environment variables in the CEN style are
591 not recognized anymore. It never was used. Change by Ulrich Drepper.
593 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
594 thread-local storage (TLS) ABI on some platforms.
595 Changes by Ulrich Drepper. SH support by Kaz Kojima.
597 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
598 EUC-JISX0213, and TSCII.
600 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
601 BSD-compatible interface for getting all network interface addresses.
602 Implementation for IPv4 by Roland McGrath.
604 * Loading of locale data is faster due to the introduction of a locale
605 archive. Implemented by Roland McGrath and Ulrich Drepper.
607 * Startup times are significantly reduced by not using exported functions
608 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
611 * Steven Munroe contributed a port to PowerPC64/Linux.
615 * The Hurd now uses the GNU libio implementation of stdio rather than the
616 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
618 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
619 with the same behavior as the Linux system call of the same name.
623 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
624 128-bit long double format.
626 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
627 IBM1161, and IBM1162 charsets.
629 * Andreas Jaeger contributed a port to x86-64/Linux.
631 * Peter Bruin contributed a port to PowerPC/Hurd.
633 * libc functions using I/O streams now can handle wide-oriented streams
636 * optimizations in the dynamic linker. Binaries created by recent binutils
637 versions start up quicker due to reduced time spent on relocations.
639 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
643 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
644 asinh, atanh, j0 for the 128-bit long double format.
646 * Bruno Haible updated all the code handling Unicode in some form to
649 * Speed of regex for single-byte locales is back to previous levels.
650 Patch by Isamu Hasegawa.
652 * Alpha, SPARC, and IA-64 now also using floating stacks.
654 * Startup time of internationalized applications greatly improved through
655 iconv cache. Use iconvconfig to generate the cache file.
656 Contributed by Ulrich Drepper.
658 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
659 severe performance problems. Patch by David Mosberger.
661 * The Hurd port got a lot more functionality like AIO, various stdio
662 extensions, etc. Mainly done by Roland McGrath.
664 * mtrace can now lookup symbols in shared libraries.
668 * Intel's IA-64 math library is largely integrated. It provides fast and
669 accurate implementatations for most basic and standard math functions
670 in float, double, and long double format.
672 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
673 and asin for the 96-bit long double format and asin, log, tan for the
674 128-bit long double format.
676 * The beginning of a last-bit accurate math library by IBM Haifa were added.
677 The basic double functions exist today. Contributed by Abraham Ziv
678 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
679 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
681 * An asynchronous name lookup library was added. The interface is designed
682 after POSIX AIO. The proposal was circulated beforehand to get comments.
683 No negative ones came in. Implemented by Ulrich Drepper.
685 * Port to S390/64bit contributed by Martin Schwidefsky
686 <schwidefsky@de.ibm.com>.
688 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
689 of functions for Linux/IA-64.
691 * The RPC code is now thread safe. Threads can now use the same service
692 of different services at the same time. Patch by Eric Norum
693 <eric.norum@usask.ca> with some help by Ulrich Drepper.
695 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
696 family of functions for Linux/S390.
698 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
699 of functions for Linux/x86.
701 * Port to Linux/CRIS contributed by Axis Communications.
705 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
706 we can now check for namespace violations and missing declarations. The
707 result is that almost all headers are now Unix-compliant (as defined in
708 the upcoming XPG6). The negative side is that some programs might need
709 corrections, too, if they depend on the incorrect form of the headers in
710 previous versions which defined too many symbols and included too many
713 * regex now handles multibyte character sets correctly.
714 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
716 * iconv (the program) does now conform to the upcoming XPG6 and handles
717 charmaps. Instead of the charset names the path of charmaps can be
718 provided and the conversion happens based on this data.
719 Contributed by Ulrich Drepper.
721 * The locale program now provides detailed information about the installed
726 only lists the names of the supported locales
730 provides details such as country, language, and codeset name.
731 Contributed by Ulrich Drepper.
735 * The gencat program now parses the input file according to the charset
736 selected by the LC_CTYPE category. This is important for stateful
737 character sets. To make generating catalogs easier there is a way
738 to overwrite the charset selected by the locale: before the first
739 message or $ quote line the catalog can contain a line like
743 to select the charset (ISO-8859-2 in this case).
745 Implemented by Shinya Hanataka and Ulrich Drepper.
747 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
748 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
749 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
751 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
752 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
754 * The LANGUAGE environment variable is now ignored unless the locale is
755 changed from the default "C" locale.
757 * The usual bug fixes.
761 * Greg McGary added runtime support for bounds checking using gcc's
762 new -fbounded-pointers option. ix86 target is complete. PowerPC
765 * Thorsten Kukuk added secure mode support to nscd.
767 * The Berkeley db libraries have been removed.
769 Related, the nss_db module is now in a separate package since it
770 obviously requires a database library being available.
772 * Wide character I/O streams implemented by Ulrich Drepper.
774 * Functions from the extended socket API added by Ulrich Drepper.
776 * Functions feenableexcept and fedisableexcept to control the
777 behaviour of individual exceptions have been added by Andreas Jaeger.
779 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
781 * The resolver code has been updated from bind 8.2.3-T5B which supports
782 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
785 This change could in some situations effect backward compatibility. Since
786 now `_res' is a thread-local instead of a global variable, modifying it
787 in one thread does not have any effect in other threads.
789 The resolver library was also extended to allow IPv6 as the transport
790 protocol for the requests. This work was done by Stig Venaas.
792 * Compatibility code for K&R C compilers has been removed from the
793 header files. A ISO C compiler is needed to use the library
794 (conforming to either C89 or C99 standard).
796 * Complete rewrite of the localedef program to support multibyte character
797 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
798 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
799 Implemented by Ulrich Drepper.
801 Bruno Haible significantly improved the generation and use of the data
802 structures for the wide character tables.
804 * Plural handling in gettext implemented by Ulrich Drepper.
806 * The utmp daemon has been removed.
808 * The port to MIPS-Linux has been finished by Andreas Jaeger.
810 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
813 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
815 * POSIX barriers implemented by Kaz Kylheku.
817 * POSIX spawn function family implemented by Ulrich Drepper.
819 * POSIX spinlocks are now available.
821 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
823 * the configure option --enable-kernel=X.Y.Z allows to strip out
824 compatibility for kernel versions before X.Y.Z. This is currently only
825 implemented for Linux.
827 * the sockaddr_in6 structure changed. The IPv6 working group added a new
828 field sin6_scope_id. This means that all programs using IPv6 should be
829 recompiled. Don't expect binary compatibility with previous glibc
832 * various conversion modules for IBM character sets contributed by
835 * IA-64 port by Jes Sorensen and HJ Lu.
837 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
838 Compiling the GNU C Library for Linux/ia64
839 ******************************************
841 Please refer to the file INSTALL in the same directory as you found
842 this file for general information about configuring and compiling
845 For general inquiries about glibc under Linux/ia64 please use the
846 following mailing list linux-ia64@linuxia64.org or one of the relevant
849 Recommended Tools for Compilation
850 =================================
852 In order for glibc-2.2 to build correctly on the ia64 you need at
853 least the following versions of the GNU tools (the :
855 * The Cygnus toolchain snapshot for the ia64 as of August 4
856 including the provided set of patches. It is however recommend
857 you use the October 24 toolchain snapshot or a more recent version.
859 OR alternatively you can try the following (the Cygnus toolchain is
860 the recommended solution):
862 * GCC and binutils, GAS and GNU LD out of CVS from
863 sources.redhat.com as of August 28, 2000 or later. The CVS tree
864 may require special patches to work properly on the ia64.
866 Configuring and compiling GNU Libc for Linux/ia64
867 =================================================
869 The library requires Linux kernel version 2.4.0-test4-000728 or
870 later to funtion properly. Besides that it support for debug libraries
871 is currently untested. Hence the following options
872 are required for configuring the library:
874 --disable-debug --enable-kernel=2.4.0
876 It is also important that you make sure the library picks up the
877 appropriate kernel header files, if you do not have recent enough
878 kernel headers in /usr/src/linux/include, you should use the
879 --with-headers=<path> option to specify the location.
881 As an example I personally use the following options to configure
886 --enable-kernel=2.4.0
890 --with-headers=/home/jes/linux/include
895 Jes Sorensen <jes@linuxcare.com>,
897 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
911 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
913 * New xdr functions are added; some rpc functions are now 64bit clean.
915 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
917 * Fixed known incompatibilities with glibc 2.0.
919 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
921 * Optimized a number of functions (especially the ELF dynamic loader).
923 * Update timezone data files.
925 * lots of charmaps corrections
927 * some new locale definitions and charmaps
932 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
933 conform to POSIX member type requirements. Symbol versions have been
934 adjusted as needed within the library, and for direct use by applications,
935 but there is potential for problems if third-party libraries use
936 struct timeval as part of their interface. This does not present
937 a problem for X and other "essential" system libraries.
939 * An additional locale model to support C++ Standard Library locale
940 model and probably more was implemented by Ulrich Drepper.
942 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
945 * Miles Bader provided the `argp' function family to support hierachical
946 command line argument parsing, layered on top of getopt.
948 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
950 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
953 * scanf recognizes the %a and %A format for scanning floating point numbers.
955 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
956 information and interfaces for the available integer types.
958 * about 130 new math functions were added to implement the ISO C9x math
961 * the new header <complex.h> contains definitions of the complex math
962 functions from ISO C 9X.
964 * the new header <tgmath.h> defines generic macros to use complex or
965 real valued functions.
967 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
969 * Andreas Jaeger provided a test suite for the math library.
971 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
973 * Ulrich Drepper added character set conversion functions (iconv).
975 * Optimized string functions have been added.
977 * The localedata addon is now part of glibc.
979 * An implementation of profiling shared libraries was added by Ulrich Drepper.
981 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
982 daemon for NSS (nscd).
984 Missing a better place here are some numbers on improvements. Under
985 Linux 2.1.125 un-tar-ing the kernel sources takes
989 using local files 12.19s 6.88s 22.91s
991 using NIS 13.92s 8.91s 26.34s
993 using NIS & nscd 10.37s 7.34s 25.30s
995 using NIS+ 27.57s 30.37s 640.46s
997 using NIS+ & nscd 10.25s 7.83s 26.51s
999 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1001 Keep in mind that non-namelookup related operations dominate above times.
1002 It was just a common complain that using NIS+ unpacking the kernel is
1005 [1] The old nscd implementation is not available anymore since it was
1006 distributed with glibc up to version 2.0.98 and thus is now replaced.
1008 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1010 * Mark Kettenis provided a Hesiod NSS module.
1012 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1013 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1015 * rcmd can now handle netgroups (Dick Streefland).
1017 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1020 * Support for the IPv6 protocol has been added to the socket API, as per the
1021 latest draft standards.
1023 * Support for Linux 2.2 has been added.
1025 * Interface changes relative to the latest 2.0.x release:
1026 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1027 addseverity NEW: Unix98
1028 alphasort64 NEW: LFS
1029 argp_err_exit_status NEW: argp, GNU ext
1030 argp_error NEW: argp, GNU ext
1031 argp_failure NEW: argp, GNU ext
1032 argp_help NEW: argp, GNU ext
1033 argp_parse NEW: argp, GNU ext
1034 argp_program_bug_address NEW: argp, GNU ext
1035 argp_program_version NEW: argp, GNU ext
1036 argp_program_version_hook NEW: argp, GNU ext
1037 argp_state_help NEW: argp, GNU ext
1038 argp_usage NEW: argp, GNU ext
1039 authdes_create NEW: Secure RPC
1040 authdes_getucred NEW: Secure RPC
1041 authdes_pk_create NEW: Secure RPC
1042 backtrace NEW: GNU ext.
1043 backtrace_symbols NEW: GNU ext.
1044 backtrace_symbols_fd NEW: GNU ext.
1046 cacosf NEW: ISO C 9x
1047 cacosh NEW: ISO C 9x
1048 cacoshf NEW: ISO C 9x
1049 cacoshl NEW: ISO C 9x
1050 cacosl NEW: ISO C 9x
1057 casinf NEW: ISO C 9x
1058 casinh NEW: ISO C 9x
1059 casinhf NEW: ISO C 9x
1060 casinhl NEW: ISO C 9x
1061 casinl NEW: ISO C 9x
1063 catanf NEW: ISO C 9x
1064 catanh NEW: ISO C 9x
1065 catanhf NEW: ISO C 9x
1066 catanhl NEW: ISO C 9x
1067 catanl NEW: ISO C 9x
1068 cbc_crypt NEW: Secure RPC
1072 ccoshf NEW: ISO C 9x
1073 ccoshl NEW: ISO C 9x
1079 cimagf NEW: ISO C 9x
1080 cimagl NEW: ISO C 9x
1081 clearerr_locked REMOVED
1082 clntunix_create NEW: sunrpc ext
1084 clog10 NEW: ISO C 9x
1085 clog10f NEW: ISO C 9x
1086 clog10l NEW: ISO C 9x
1096 cprojf NEW: ISO C 9x
1097 cprojl NEW: ISO C 9x
1099 crealf NEW: ISO C 9x
1100 creall NEW: ISO C 9x
1105 csinhf NEW: ISO C 9x
1106 csinhl NEW: ISO C 9x
1109 csqrtf NEW: ISO C 9x
1110 csqrtl NEW: ISO C 9x
1114 ctanhf NEW: ISO C 9x
1115 ctanhl NEW: ISO C 9x
1117 des_setparity NEW: Secure RPC
1118 ecb_crypt NEW: Secure RPC
1119 endutxent NEW: Unix98
1121 exp10f NEW: ISO C 9x
1122 exp10l NEW: ISO C 9x
1126 fattach NEW: STREAMS
1127 fdetach NEW: STREAMS
1131 feclearexcept NEW: ISO C 9x
1132 fegetenv NEW: ISO C 9x
1133 fegetexceptflag NEW: ISO C 9x
1134 fegetround NEW: ISO C 9x
1135 feholdexcept NEW: ISO C 9x
1137 feraiseexcept NEW: ISO C 9x
1138 ferror_locked REMOVED
1139 fesetenv NEW: ISO C 9x
1140 fesetexceptflag NEW: ISO C 9x
1141 fesetround NEW: ISO C 9x
1142 fetestexcept NEW: ISO C 9x
1143 feupdateenv NEW: ISO C 9x
1144 fflush_locked REMOVED
1148 fgets_unlocked NEW: GNU ext.
1149 fileno_locked REMOVED
1161 fputc_locked REMOVED
1162 fputs_unlocked NEW: GNU ext.
1163 fread_unlocked NEW: GNU ext.
1168 fstatvfs NEW: Unix98
1172 ftruncate64 NEW: LFS
1174 fwrite_unlocked NEW: GNU ext.
1175 gai_strerror NEW: IPv6
1179 getchar_locked REMOVED
1181 getdate_err NEW: Unix98
1182 getdate_r NEW: GNU ext.
1184 getnameinfo NEW: IPv6
1185 getnetname NEW: Secure RPC
1186 getpmsg NEW: STREAMS
1187 getpt NEW: Unix98 PTY
1188 getrlimit64 NEW: LFS
1189 getutxent NEW: Unix98
1190 getutxid NEW: Unix98
1191 getutxline NEW: Unix98
1192 glob64 NEW: GNU ext.
1193 globfree64 NEW: GNU ext.
1194 gnu_get_libc_release NEW: GNU ext.
1195 gnu_get_libc_version NEW: GNU ext.
1196 grantpt NEW: Unix98 PTY
1197 host2netname NEW: Secure RPC
1199 iconv_close NEW: iconv
1200 iconv_open NEW: iconv
1201 if_freenameindex NEW: IPv6
1202 if_indextoname NEW: IPv6
1203 if_nameindex NEW: IPv6
1204 if_nametoindex NEW: IPv6
1205 in6addr_any NEW: IPv6
1206 in6addr_loopback NEW: IPv6
1207 inet6_isipv4mapped NEW: IPv6
1208 isastream NEW: STREAMS
1209 iswblank NEW: GNU ext.
1210 key_decryptsession NEW: Secure RPC
1211 key_decryptsession_pk NEW: Secure RPC
1212 key_encryptsession NEW: Secure RPC
1213 key_encryptsession_pk NEW: Secure RPC
1214 key_gendes NEW: Secure RPC
1215 key_get_conv NEW: Secure RPC
1216 key_secretkey_is_set NEW: Secure RPC
1217 key_setnet NEW: Secure RPC
1218 key_setsecret NEW: Secure RPC
1219 llrint NEW: ISO C 9x
1220 llrintf NEW: ISO C 9x
1221 llrintl NEW: ISO C 9x
1222 llround NEW: ISO C 9x
1223 llroundf NEW: ISO C 9x
1224 llroundl NEW: ISO C 9x
1229 lrintf NEW: ISO C 9x
1230 lrintl NEW: ISO C 9x
1231 lround NEW: ISO C 9x
1232 lroundf NEW: ISO C 9x
1233 lroundl NEW: ISO C 9x
1235 makecontext NEW: Unix98
1236 mempcpy NEW: GNU ext.
1239 modify_ldt NEW: kernel
1243 nearbyint NEW: ISO C 9x
1244 nearbyintf NEW: ISO C 9x
1245 nearbyintl NEW: ISO C 9x
1246 netname2host NEW: Secure RPC
1247 netname2user NEW: Secure RPC
1248 nexttoward NEW: ISO C 9x
1249 nexttowardf NEW: ISO C 9x
1250 nexttowardl NEW: ISO C 9x
1254 passwd2des NEW: Secure RPC
1256 pow10f NEW: GNU ext.
1257 pow10l NEW: GNU ext.
1260 printf_size NEW: GNU ext.
1261 printf_size_info NEW: GNU ext.
1262 profil_counter REMOVED
1263 pthread_mutexattr_getkind_np REPLACED
1264 pthread_mutexattr_setkind_np REPLACED
1265 ptsname NEW: Unix98 PTY
1266 ptsname_r NEW: Unix98 PTY
1268 putchar_locked REMOVED
1269 putgrent NEW: GNU ext.
1271 putpmsg NEW: STREAMS
1272 pututxline NEW: Unix98
1276 readdir64_r NEW: LFS
1277 remquo NEW: ISO C 9x
1278 remquof NEW: ISO C 9x
1279 remquol NEW: ISO C 9x
1281 roundf NEW: ISO C 9x
1282 roundl NEW: ISO C 9x
1284 scalbln NEW: ISO C 9x
1285 scalblnf NEW: ISO C 9x
1286 scalblnl NEW: ISO C 9x
1288 sendfile NEW: kernel
1289 setcontext NEW: Unix98
1290 setrlimit64 NEW: LFS
1291 setutxent NEW: Unix98
1293 sigignore NEW: Unix98
1294 sigqueue NEW: POSIX.1b
1295 sigrelse NEW: Unix98
1296 sigset NEW: POSIX.1b
1297 sigtimedwait NEW: POSIX.1b
1298 sigwaitinfo NEW: POSIX.1b
1299 sincos NEW: GNU ext.
1300 sincosf NEW: GNU ext.
1301 sincosl NEW: GNU ext.
1305 strcasestr NEW: GNU ext.
1306 strtoimax NEW: ISO C 9x
1307 strtoumax NEW: ISO C 9x
1308 strverscmp NEW: GNU ext.
1309 svcauthdes_stats NEW: Secure RPC
1310 svcunix_create NEW: sunrpc etx
1311 svcunixfd_create NEW: sunrpc ext
1312 swapcontext NEW: Unix98
1313 tcgetsid NEW: Unix98 PTY
1314 tdestroy NEW: GNU ext.
1315 tgamma NEW: ISO C 9x
1316 tgammaf NEW: ISO C 9x
1317 tgammal NEW: ISO C 9x
1321 truncf NEW: ISO C 9x
1322 truncl NEW: ISO C 9x
1324 unlockpt NEW: Unix98 PTY
1325 updwtmpx NEW: Unix98
1326 user2netname NEW: Secure RPC
1327 utmpxname NEW: Unix98
1328 versionsort NEW: GNU ext.
1329 versionsort64 NEW: GNU ext.
1331 wcscasecmp NEW: GNU ext.
1332 wcsncasecmp NEW: GNU ext.
1333 wcsnlen NEW: GNU ext.
1334 wcstoimax NEW: ISO C 9x
1335 wcstoll NEW: ISO C 9x
1336 wcstoull NEW: ISO C 9x
1337 wcstoumax NEW: ISO C 9x
1339 wordexp NEW: POSIX.2
1340 wordfree NEW: POSIX.2
1341 write_profiling REMOVED
1342 xdecrypt NEW: Secure RPC
1343 xdr_authdes_cred NEW: Secure RPC
1344 xdr_authdes_verf NEW: Secure RPC
1345 xdr_cryptkeyarg NEW: Secure RPC
1346 xdr_cryptkeyarg2 NEW: Secure RPC
1347 xdr_cryptkeyres NEW: Secure RPC
1348 xdr_getcredres NEW: Secure RPC
1349 xdr_key_netstarg NEW: Secure RPC
1350 xdr_key_netstres NEW: Secure RPC
1351 xdr_keybuf NEW: Secure RPC
1352 xdr_keystatus NEW: Secure RPC
1353 xdr_netnamestr NEW: Secure RPC
1354 xdr_sizeof NEW: Secure RPC
1355 xdr_unixcred NEW: sunrpc ext
1356 xencrypt NEW: Secure RPC
1357 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1368 * inet_ntoa is thread-safe
1370 * updwtmp is moved from libutil to libc
1372 * rewrite of cbrt function
1374 * update of timezone data
1388 * add atoll function
1390 * fix complex problems in Berkeley DB code
1392 * fix math functions
1396 * fixed lots of header problems (especially Linux/GNU specific)
1398 * dynamic loader preserves all registers
1400 * Roland McGrath provided support for handling of auxiliary objects in
1401 the ELF dynamic loader.
1403 * support for parallel builds is improved
1407 * GNU extensions are no longer declared by default. To enable them you
1408 must define the macro `_GNU_SOURCE' in your program or compile with
1411 * The library has changed from using GNU ld symbol aliases to using weak
1412 symbols where available. The ELF object file format supports weak
1413 symbols; GNU ld also supports weak symbols in the a.out format. (There
1414 is also now support for other GNU ld extensions in ELF. Use the
1415 `--with-elf' option to configure to indicate you have ELF, and
1416 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1417 of many files which contained only symbol aliases, reducing the size of
1418 the source and the compiled library; many other files were renamed to
1419 less cryptic names previously occupied by the symbol alias files.
1420 There is a new header file <elf.h> for programs which operate on
1421 files in the ELF format.
1423 * Converted to Autoconf version 2, so `configure' has more options.
1424 Run `configure --help' to see the details.
1426 * The library can now be configured to build profiling, highly-optimized
1427 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1428 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1429 `configure' enable building these extra libraries. The shared library is
1430 built by default when using both ELF and GNU ld. When shared libraries
1431 are enabled, the new library `-ldl' is available for arbitrary run-time
1432 loading of shared objects; its interface is defined in <dlfcn.h>. The
1433 new header file <link.h> gives access to the internals of the run-time
1434 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1435 application of same name on other systems and it provides information
1436 about dynamically linked binaries.
1438 * The C library now provides the run-time support code for profiling
1439 executables compiled with `-pg'. Programs can control the profiling code
1440 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1441 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1442 the support for this file format was contributed by David Mosberger-Tang.
1444 * The math code has been replaced with a math library based on fdlibm from
1445 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1446 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1447 functions. The math functions now reside in a separate library, so
1448 programs using them will need to use `-lm' their linking commands.
1450 * John C. Bowman contributed optimized ix87 assembler inline functions.
1452 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1453 mechanism similar to that found in Solaris 2. This is now used for the
1454 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1455 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1456 file controls what services are used for each individual database. This
1457 works by loading shared libraries with names specified in `nsswitch.conf',
1458 so service modules can be changed or added at any time without even
1459 relinking any program. Currently there are the file, db, and NIS based
1460 NSS services available.
1462 * The new functions `strtoq' and `strtouq' parse integer values from
1463 strings, like `strtol' and `strtoul', but they return `long long int' and
1464 `unsigned long long int' values, respectively (64-bit quantities).
1466 * The new functions `strtof' and `strtold' parse floating-point values from
1467 strings, like `strtod', but they return `float' and `long double' values,
1468 respectively (on some machines `double' and `long double' are the same).
1470 * Ulrich Drepper has contributed new implementations of the floating-point
1471 printing and reading code used in the `printf' family of functions and
1472 `strtod', `strtof', and `strtold'. These new functions are perfectly
1473 accurate, and much faster than the old ones.
1475 * The implementation of the POSIX locale model was completely rewritten by
1476 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1477 to compile the POSIX locale definition.
1479 * The former dummy implementations of the strcoll and strxfrm function are
1480 now replaced by fully functional code contributed by Ulrich Drepper. The
1481 collation information comes from the POSIX locale definitions.
1483 * The new header <langinfo.h> defines an interface for accessing
1484 various locale-dependent data (using the locale chosen with `setlocale').
1486 * Ulrich Drepper has contributed a new suite of functions for operation on
1487 wide-character and multibyte-character strings, in <wchar.h>;
1488 and classification and case conversion of wide characters, in <wctype.h>.
1489 These new functions are conforming to the ISO C, Amendement 1 specification.
1491 * There is now a second implementation of the standard I/O library available.
1492 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1493 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1495 * You can now use positional parameter specifications in format strings
1496 for the `printf' and `scanf' families of functions. For example,
1497 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1498 ``Number 6, Mr Jones''. This is mainly useful when providing different
1499 format strings for different languages, whose grammars may dictate
1500 different orderings of the values being printed. To support this
1501 feature, the interface for `register_printf_handler' has changed; see
1502 the header file <printf.h> for details.
1504 * The `printf' and `scanf' families of functions now understand a new
1505 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1506 to group numbers as indicated by the locale; for `scanf' and friends, this
1507 says to accept as valid only a number with all the proper grouping
1508 separators in the right places. In the default "C" locale, numbers are
1509 not grouped; but locales for specific countries will define the usual
1510 conventions (i.e. separate thousands with `,' in the US locale).
1512 * The pgrp functions have been regularized, slightly incompatibly but much
1513 less confusingly. The core functions are now `getpgid' and `setpgid',
1514 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1515 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1516 provided for compatibility. There is no longer an incompatible `getpgrp'
1517 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1519 * The new header file <fts.h> and suite of functions simplify programs that
1520 operate on directory trees. This code comes from 4.4 BSD.
1522 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1523 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1524 NSS scheme used in glibc.
1526 * There is a new malloc debugging hook `__memalign_hook'.
1528 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1529 `unsigned int' in <sys/types.h>. These are for compatibility only and
1530 their use is discouraged.
1532 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1533 done differently, so that it works even without GNU ld.
1535 * New function `euidaccess' checks allowed access to a file like `access',
1536 but using the effective IDs instead of the real IDs.
1538 * The time zone data files have been updated for the latest and greatest
1539 local time conventions of the countries of the world.
1541 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1544 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1545 for formatting floating-point numbers. They are provided only for
1546 compatibility; new programs should use `sprintf' instead. There are
1547 also equivalent function for the `long double' floating-point type and
1548 all functions also exist in a reentrant form.
1550 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1551 functions for maintaining the login-record files (primarily of use to
1552 system programs such as `login'), and convenient functions for
1553 allocating and initializing a pseudo-terminal (pty) device.
1555 * Ulrich Drepper has contributed new support for System V style
1556 shared memory and IPC on systems that support it.
1558 * Ulrich Drepper has contributed several miscellaneous new functions found
1559 in System V: The `hsearch' family of functions provide an effective
1560 implementation of hash tables; `a64l' and `l64a' provide a very simple
1561 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1564 * Ulrich Drepper has contributed new reentrant counterparts for the
1565 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1567 * Ulrich Drepper has contributed new, highly-optimized versions of several
1568 string functions for the i486/Pentium family of processors.
1570 * Ulrich Drepper has updated the Linux-specific code, based largely
1571 on work done in Hongjiu Lu's version of GNU libc for Linux.
1572 The GNU library now supports Linux versions 2.0.10 and later,
1573 using the ELF object file format (i[3456]86-*-linux).
1575 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1577 * David Mosberger-Tang and Richard Henderson have ported the C library
1578 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1579 dynamic linking support for ELF/Alpha.
1581 * Richard Henderson contributed several Alpha optimized assembler function
1582 for arithmetic and string handling.
1584 * Ulrich Drepper has contributed a new set of message catalog functions to
1585 support multiple languages using the <libintl.h> interface, for use with
1586 his new package GNU gettext. Translation volunteers have contributed
1587 catalogs of the library's messages in Spanish, German, and Korean.
1589 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1590 program and the `catgets' function for reading the catalog files it
1591 creates. (The <libintl.h> interface is preferred; we include the
1592 <nl_types.h> interface using `catgets' only for source compatibility with
1593 programs already written to use it.)
1595 * New header file <values.h> gives SVID-compatible names for <limits.h>
1598 * Various new macros, declarations, and small header files for compatibility
1601 * New function `group_member' is a convenient way to check if a process has
1602 a given effective group ID.
1604 * When using GCC 2.7 and later, the socket functions are now declared in a
1605 special way so that passing an argument of type `struct sockaddr_in *',
1606 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1607 `struct sockaddr *' type, does not generate a type-clash warning.
1609 * New function `error' declared in header file <error.h> is a convenient
1610 function for printing error messages and optionally exiting; this is the
1611 canonical function used in GNU programs. The new functions `err', `warn',
1612 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1613 doing the same thing.
1615 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1616 POSIX.2 `glob' function to do ~ and {...} expansion.
1618 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1619 `clearenv' which is used in POSIX.9 is also available.
1621 * New function `getsid' returns session ID number on systems that support it.
1623 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1624 files <db.h> and <mpool.h> provide a rich set of functions for several
1625 types of simple databases stored in memory and in files, and <ndbm.h> is
1626 an old `ndbm'-compatible interface using the `db' functions. Link with
1627 `-ldb' to get these functions.
1629 * New macro `strdupa' copies a string like `strdup', but uses local stack
1630 space from `alloca' instead of dynamic heap space from `malloc'.
1632 * New function `strnlen' is like `strlen' but searches only a given maximum
1633 number of characters for the null terminator. `stpncpy', `strndup' and
1634 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1637 * New function `statfs' in header <sys/statfs.h>.
1639 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1640 provide convenient functions for operating on blocks of null-terminated
1643 * A new suite of functions in <utmp.h> handle all the details of reading
1644 and writing the utmp file.
1646 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1649 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1650 completely POSIX compliant and also implemented the extended functionality
1651 to handle alternate digit representation and alternate era date formats.
1653 * Ulrich Drepper provided an implementation of the `strptime' function
1654 defined in XPG4.2 which transforms a string into a `struct tm' value.
1656 * Paul Eggert provided the tzselect shell script as part of the timezone
1657 code. The shell script makes it easy to select the correct timezone
1660 * The implementation of the malloc family of functions is completely replaced
1661 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1662 The implementation uses the mmap function (if available) and it is
1663 optimized for the use in multi threaded programs.
1665 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1666 functions. This new functionality is usable by specifying a special
1667 salt string and it is compatible with implementation on *BSD systems.
1669 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1670 `getsubopt' to handle second level command line options, `bsd_signal'
1671 to access BSD style `signal' functionality, the obsolete `regexp' style
1674 * the `lchown' function is available on system which support this
1677 * The implementation of the shadow password handling function was contributed
1680 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1682 * POSIX.1g support was added. The <sys/select.h> header is available,
1683 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1684 implementation of `getaddrinfo'.
1688 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1690 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1691 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1693 * The new function `daemon' from 4.4 BSD is useful for server programs that
1694 want to put themselves in the background.
1696 * Joel Sherrill has contributed support for several standalone boards that
1697 run without an operating system.
1699 * `printf', `scanf' and friends now accept a `q' type modifier for long
1700 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1702 * All of the code taken from BSD (notably most of the math and networking
1703 routines) has been updated from the BSD 4.4-Lite release.
1705 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1707 * The new functions `getdomainname' and `setdomainname' fetch or change the
1708 YP/NIS domain name. These are system calls which exist on systems which
1711 * The time zone data files have been updated for the latest international
1714 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1715 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1719 * The C library now includes support for Sun RPC, from Sun's free
1720 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1721 are included. (There is still no support for YP.)
1723 * Tom Quinn has contributed a port of the C library to SGI machines running
1724 Irix 4 (mips-sgi-irix4).
1726 * The new `lockf' function is a simplified interface to the locking
1727 facilities of `fcntl', included for compatibility.
1729 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1731 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1733 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1736 * The error message printed by `assert' for a failed assertion now includes
1737 the name of the program (if using GNU ld) and the name of the calling
1738 function (with versions of GCC that support this).
1740 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1742 * The library now includes the <sys/mman.h> header file and memory
1743 management functions `mmap', `munmap', `mprotect', `msync', and
1744 `madvise', on systems that support those facilities.
1746 * The interface for `mcheck' has changed slightly: the function called to
1747 abort the program when an allocation inconsistency is detected now takes
1748 an argument that indicates the type of failure. The new function
1749 `mprobe' lets you request a consistency check for a particular block at
1750 any time (checks are normally done only when you call `free' or `realloc'
1753 * It is now possible to easily cross-compile the C library, building on one
1754 system a library to run on another machine and/or operating system. All
1755 you need to do is set the variable `HOST_CC' in `configparms' to the
1756 native compiler for programs to run on the machine you are building on (a
1757 few generator programs are used on Unix systems); set `CC' to the
1760 * The new function `fexecve' (only implemented on the GNU system) executes
1761 a program file given a file descriptor already open on the file.
1765 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1766 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1768 * You can set the variable `libprefix' in `configparms' to specify a prefix
1769 to be prepended to installed library files; this makes it easy to install
1770 the GNU C library to be linked as `-lgnuc' or whatever.
1772 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1773 copies a limited number of characters from a string, and returns the
1774 address of the last character written.
1776 * You no longer need to check for whether the installed `stddef.h' is
1777 compatible with the GNU C library. configure now checks for you.
1779 * You can now define a per-stream `fileno' function to convert the
1780 stream's cookie into an integral file descriptor.
1782 * ``malloc (0)'' no longer returns a null pointer. Instead, it
1783 allocates zero bytes of storage, and returns a unique pointer which
1784 you can pass to `realloc' or `free'. The behavior is undefined if
1785 you dereference this pointer.
1787 * The C library now runs on Sony NEWS m68k machines running either
1788 NewsOS 3 or NewsOS 4.
1790 * The new `syscall' function is a system-dependent primitive function
1791 for invoking system calls. It has the canonical behavior on Unix
1792 systems, including unreliable return values for some calls (such as
1793 `pipe', `fork' and `getppid').
1795 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
1796 to `EAGAIN', which is the preferred name. On systems whose kernels
1797 use two distinct codes, the C library now translates EWOULDBLOCK to
1798 EAGAIN in every system call function.
1802 * The GNU C Library Reference Manual is now distributed with the library.
1803 `make dvi' will produce a DVI file of the printed manual.
1804 `make info' will produce Info files that you can read on line using C-h i
1805 in Emacs or the `info' program.
1806 Please send comments on the manual to bug-glibc-manual@gnu.org.
1808 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
1810 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
1812 * Jason Merrill has contributed a port to the Sequent Symmetry running
1813 Dynix version 3 (i386-sequent-dynix).
1815 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
1816 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
1818 * New function `memory_warnings' lets you arrange to get warnings when
1819 malloc is running out of memory to allocate, like Emacs gives you.
1821 * The C library now contains the relocating allocator used in Emacs 19 for
1822 its editing buffers. This allocator (ralloc) minimizes allocation
1823 overhead and fragmentation by moving allocated regions around whenever it
1824 needs to. You always refer to a ralloc'd region with a "handle" (a
1825 pointer to a pointer--an object of type `void **').
1827 * There is a new `printf' format: `%m' gives you the string corresponding
1828 to the error code in `errno'.
1830 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
1831 or `%[' conversion, but instead of filling in a fixed-sized buffer you
1832 pass, the `a' modifier says to fill in a `char **' you pass with a
1835 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
1836 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
1837 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
1839 * `mkstemp' is a traditional Unix function to atomically create and open a
1840 uniquely-named temporary file.
1844 * The standard location for the file that says what the local timezone is
1845 has changed again. It is now `/usr/local/etc/localtime' (or more
1846 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
1848 * The distribution no longer contains any files with names longer than 14
1851 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
1852 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
1854 * New functions `ttyslot' and `syslog' from 4.4 BSD.
1858 * The configuration process has changed quite a bit. The `configure'
1859 script is now used just like the configuration scripts for other GNU
1860 packages. The `sysdeps' directory hierarchy is much rearranged.
1861 The file `INSTALL' explains the new scheme in detail.
1863 * The header files no longer need to be processed into ANSI C and
1864 traditional C versions. There is just one set of files to install, and
1865 it will work with ANSI or old C compilers (including `gcc -traditional').
1867 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
1868 MIPS DECStation running Ultrix 4.
1870 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
1871 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
1872 made itself into a shared library.
1874 * Yet further improved support for the i386, running 4.3 BSD-like systems
1875 (such as Mach 3 with the Unix single-server), or System V.
1877 * New function `strncasecmp' to do case-insensitive string comparison
1878 with limited length.
1880 * New function `strsep' is a reentrant alternative to `strtok'.
1882 * New functions `scandir' and `alphasort' for searching directories.
1884 * New function `setenv' is a better interface to `putenv'.
1886 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
1887 function for traversing a directory tree.
1889 * The GNU obstack package is now also part of the C library.
1890 The new function `open_obstack_stream' creates a stdio stream that
1891 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
1892 formatted output directly to an obstack.
1894 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
1895 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
1897 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
1899 * The new functions `strfry' and `memfrob' do mysterious and wonderful
1900 things to your strings.
1902 * There are some new test programs: test-fseek, testmb, and testrand.
1904 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
1905 These ports are not finished, but are a good starting place for really
1906 supporting those systems.
1908 * `/etc/localtime' is now the standard location for the file that says what
1909 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
1910 This follows the general principle that `/etc' is the place for all local
1911 configuration files.
1913 * The C library header files now use `extern "C"' when used by the C++
1914 compiler, so the C library should now work with C++ code.
1916 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
1917 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
1920 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
1921 function which uses the `merge sort' algorithm, and is said to be
1922 significantly faster than the old GNU `qsort' function. Merge sort is
1923 now the standard `qsort' function. The new algorithm can require a lot
1924 of temporary storage; so, the old sorting function is called when the
1925 required storage is not available.
1927 * The C library now includes Michael Glad's Ultra Fast Crypt, which
1928 provides the Unix `crypt' function, plus some other entry points.
1930 * The code and header files taken from 4.4 BSD have been updated with the
1931 latest files released from Berkeley.
1933 ----------------------------------------------------------------------
1934 Copyright information:
1936 Copyright (C) 1992-2009, 2010, 2011 Free Software Foundation, Inc.
1938 Permission is granted to anyone to make or distribute verbatim copies
1939 of this document as received, in any medium, provided that the
1940 copyright notice and this permission notice are preserved,
1941 thus giving the recipient permission to redistribute in turn.
1943 Permission is granted to distribute modified versions
1944 of this document, or of portions of it,
1945 under the above conditions, provided also that they
1946 carry prominent notices stating who last changed them.
1949 version-control: never