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_at
12 * The following bugs are resolved with this release:
14 11724, 12445, 12454, 12460, 12469, 12489, 12509, 12510, 12583, 12587, 12597,
19 * The following bugs are resolved with this release:
21 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11611, 11640,
22 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979, 12005,
23 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113, 12140,
24 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348, 12378,
27 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
29 * POWER7 optimizations: memset, memcmp, strncmp
31 * New optimized string functions for x86-64: strnlen (SSE2),
32 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
33 Implemented by Ulrich Drepper.
37 * The following bugs are resolved with this release:
39 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915, 10918,
40 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001, 11007,
41 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070, 11093,
42 11115, 11120, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
43 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
44 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
45 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
46 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
48 * New interfaces: pthread_getname_np, pthread_setname_np
50 * New Linux interface: recvmmsg
52 * STT_GNU_IFUNC implemented for Sparc by David Miller.
54 * The dynamic linker now recognizes supported ABI versions from the
55 EI_ABIVERSION field in the ELF header.
56 Implemented by Ulrich Drepper.
58 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
59 will not be used to fill in password fields in the passwd.byname replies.
60 Instead it is used to synthesize the shadow.byname table, should it be
61 missing. This is a useful mode in some installations involving Solaris.
62 Implemented by Ulrich Drepper.
64 * New locales: kok_IN, sq_MK, cv_RU
68 * The following bugs are resolved with this release:
70 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
71 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
72 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
73 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
74 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
75 10789, 10817, 10823, 10840, 10847
77 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
79 Implemented by Ulrich Drepper.
81 * Checking version of longjmp added that fails if an uninitialized stack
82 frame would be created. Implemented by Ulrich Drepper.
84 * STT_GNU_IFUNC is now supported in static executables.
85 Implemented by H.J. Lu.
87 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
89 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
90 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
91 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
92 Contributed by H.J. Lu.
94 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
95 Implemented by Ulrich Drepper.
97 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
99 Contributed by H.J. Lu.
101 * Support for fma instruction in AVX on x86-64.
102 Implemented by H.J. Lu and Ulrich Drepper.
104 * AVX support in x86-64 auditing support in ld.so.
105 Implemented by H.J. Lu.
107 * STB_GNU_UNIQUE support added.
108 Implemented by Ulrich Drepper.
110 * Implement second fallback mode for optimized DNS lookup for even more
111 broken environments. If two requests from the same port are not
112 handled correctly close the socket and open a new one before sending
113 the second request. The 'single-request-reopen' option in /etc/resolv.conf
114 can be used to select this mode right away, instead of rediscovering the
115 necessity is every process again.
116 Implemented by Ulrich Drepper.
118 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
119 Implemented by Adam Tkac.
121 * Optimized iconv conversions for S390x.
122 Implemented by Andreas Krebbel.
124 * Using condvars with PI mutexes is now more efficient due to kernel
125 support for requeueing to PI futexes. NPTL support added for x86-64.
126 Implemented by Ulrich Drepper.
128 * New locales: ps_AF, my_MM
132 * The following bugs are resolved with this release:
134 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
135 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
136 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
137 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
138 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
140 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
141 Implemented by Ulrich Drepper.
143 * New Linux interfaces: accept4, fallocate, fallocate64.
144 Implemented by Ulrich Drepper.
146 * Correct declarations of string function when used in C++ code. This
147 could lead to compile errors for invalid C++ code.
149 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
152 * New POSIX 2008 interface: psiginfo
153 Implemented by Ulrich Drepper.
155 * New ISO C++1x interfaces: quick_exit, at_quick_exit
156 Implemented by Ulrich Drepper.
158 * Support for selecting between multiple function definitions at runtime
159 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
161 * The libcrypt library can now use the hash function implementations in
162 NSS. Implemented by Ulrich Drepper.
164 * The malloc implementation can be compiled to be less memory efficient
165 but higher performing in multi-threaded programs.
166 Implemented by Ulrich Drepper.
168 * New locales: nan_TW@latin, ks_IN
170 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
171 Implemented by Ulrich Drepper.
173 * Extended printf hook support. It is possible to use user-defined types
174 and extend existing format specifiers.
175 Implemented by Ulrich Drepper.
177 * Handling for group shadow files has been added.
178 Implemented by Ulrich Drepper.
180 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
181 servers (the case, e.g., for some people using the built-in DNS
182 server in ADSL modems/routers). There is a once-per-process timeout
183 in case of a broken server. To avoid it, users can run nscd or put
184 'options single-request' in /etc/resolv.conf.
185 Implemented by Ulrich Drepper.
189 * The following bugs are resolved with this release:
191 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
192 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
193 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
194 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
195 6968, 6974, 6980, 6995, 7008, 7009, 7029
197 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
198 up at the same time. Implemented by Ulrich Drepper.
200 * TLS descriptors for LD and GD on x86 and x86-64.
201 Implemented by Alexandre Oliva.
203 * getaddrinfo now handles DCCP and UDPlite.
204 Implemented by Ulrich Drepper.
206 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
207 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
208 Implemented by Ulrich Drepper.
210 * New implementation of memmem, strstr, and strcasestr which is O(n).
211 Implemented by Eric Blake.
213 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
215 * Implement "e" option for popen to open file descriptor with the
216 close-on-exec flag set. Implemented by Ulrich Drepper.
218 * Implement "b" mode for fmemopen. In this mode writes writes don't
219 implicitly add a NUL byte and seeks from the end of the buffer really
220 use the buffer end, not the string length as the basis.
221 Implemented by Ulrich Drepper.
223 * Many functions, exported and internal, now atomically set the close-on-exec
224 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
226 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
228 Implemented by Pravin Satpute.
230 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
234 * The following bugs are resolved with this release:
236 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
237 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
238 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
239 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
240 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
241 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
242 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
244 * New locales: bo_CN, bo_IN, shs_CA.
246 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
248 * Sorting rules for some Indian languages (Devanagari and Gujarati).
249 Implemented by Pravin Satpute.
251 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
253 * nscd caches now all timeouts for DNS entries
254 Implemented by Ulrich Drepper.
256 * nscd is more efficient and wakes up less often.
257 Implemented by Ulrich Drepper.
259 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
260 vdprintf, and obstack_vprintf.
261 Implemented by Jakub Jelinek.
263 * Faster memset for x86-64.
264 Implemented by Harsha Jagasia and H.J. Lu.
266 * Faster memcpy on x86.
267 Implemented by Ulrich Drepper.
269 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
270 Implemented by Ulrich Drepper.
272 * Faster sqrt and sqrtf implemention for some PPC variants.
273 Implemented by Stephen Munroe.
277 * The following bugs are resolved with this release:
279 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
280 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
281 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
282 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
283 5071, 5103, 5104, 5112, 5113, 5184, 5186
285 * More checking functions: fread, fread_unlocked, open*, mq_open.
286 Implemented by Jakub Jelinek and Ulrich Drepper.
288 * Extend fortification to C++. Implemented by Jakub Jelinek.
290 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
291 by not recognizing 'a' as a modifier when those specs are requested.
292 Implemented by Jakub Jelinek.
294 * PPC optimizations to math and string functions.
295 Implemented by Steven Munroe.
297 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
298 options to be passed. Implemented by Ulrich Drepper.
300 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
302 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
303 Implemented by Ulrich Drepper.
305 * Handle private futexes in the NPTL implementation.
306 Implemented by Jakub Jelinek and Ulrich Drepper.
308 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
309 Implemented by Roland McGrath and Ulrich Drepper.
311 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
313 * SHA-256 and SHA-512 based password encryption.
314 Implemented by Ulrich Drepper.
316 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
317 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
320 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
321 Implemented by Ulrich Drepper.
325 * The following bugs are resolved with this release:
327 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
328 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
329 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
330 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
331 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
332 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
333 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
336 * New Linux interfaces: epoll_pwait, sched_getcpu.
338 * New generic interfaces: strerror_l.
340 * nscd can now cache the services database. Implemented by Ulrich Drepper.
344 * The following bugs are resolved with this release:
346 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
347 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
348 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
349 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
350 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
351 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
352 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
353 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
354 3225, 3251, 3252, 3253, 3273
356 * For Linux, the sorting of addresses returned by getaddrinfo now also
357 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
358 Implemented by Ulrich Drepper.
360 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
361 Implemented by Ulrich Drepper.
363 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
365 * New iconv module for MIK. Contributed by Alexander Shopov.
367 * For sites with broken group and/or passwd database, the auto-propagate
368 option of nscd can prevent creating ID lookup entries from the results
369 of a name lookup and vice versa. This usually is no problem but some
370 site might have problems with the default behavior.
371 Implemented by Ulrich Drepper.
373 * Iterating over entire database in NIS can be slow. With the
374 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
375 to trade time for memory. The entire database will be read at once.
376 Implemented by Ulrich Drepper.
378 * The interfaces introduced in RFC 3542 have been implemented by
381 * Support for the new ELF hash table format was added by Ulrich Drepper.
383 * Support for priority inheritance mutexes added by Jakub Jelinek and
386 * Support for priority protected mutexes added by Jakub Jelinek.
388 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
389 or_IN, csb_PL, fy_NL, sr_ME.
393 * More overflow detection functions.
395 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
396 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
398 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
399 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
400 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
401 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
402 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
403 by Masahide Washizawa.
405 * It is now possible to install audit libraries for the dynamic linker using
406 LD_AUDIT. Implemented by Ulrich Drepper.
408 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
409 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
410 For a libc and libpthread that works well on Linux 2.4 kernels, we
411 recommend using the stable 2.3 branch.
413 * The new function open_wmemstream acts like open_memstream,
414 but uses a wchar_t wide character buffer.
416 * The new function ppoll is an improved version of poll, similar to pselect.
418 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
419 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
420 renameat, unlinkat, linkat, symlinkat, readlinkat.
422 * New Linux kernel system calls: unshare,
423 inotify_init, inotify_add_watch, inotify_rm_watch.
425 * The euidaccess function is now also known by the alias eaccess,
426 for compatibility with some other systems.
428 * Timezone data updated to 2006b version.
432 * The following bugs are resolved with this release:
434 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
435 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
436 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
437 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
438 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
439 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
441 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
443 * As of this release, GCC 4 can be used to compile the C Library.
445 * Timezone data updated to 2005m version.
449 * The following bugs are resolved with this release:
451 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
452 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
453 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
454 777, 787, 821, 822, 823, 825
456 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
460 * Support for RFC 3678. Real implementations exist only for Linux so far.
461 Implemented by Ulrich Drepper.
463 * nscd can now cache entries persistently. Expiring entries are reloaded.
464 For speedups the cache can be shared in memory with client processes.
465 Implemented by Ulrich Drepper.
467 * nscd can now perform SELinux checks.
468 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
470 * getaddrinfo queries are now cached. Canonical name lookup is performed
472 Implemented by Ulrich Drepper.
474 * The nothrow function attribute is used when headers are used by gcc when
475 compiling C code. This can avoid significant amounts of exception
478 * The malloc functions perform more error checking and are stricter when
479 it comes to reacting on errors. The default action is to terminate
480 the process after showing an error message. Implemented by Ulrich Drepper.
482 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
483 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
485 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
486 namespaces using the new function dlmopen(). This feature is of course,
487 like most other dynamic loading functionality, not available in statically
488 linked applications. Implemented by Ulrich Drepper.
490 * Low-overhead boundary checking variants of string and some stdio functions
491 were added. These are to be used in conjunction with a gcc patch by
492 Jakub Jelinek which adds calls to these functions if possible.
493 Implemented by Jakub Jelinek and Ulrich Drepper.
495 * Old code for several operating systems and machine architectures that
496 have not been in working condition in a long time have been removed from
497 the main source tree maintained by the GNU C Library's maintainers.
498 These files are now reside in the separate `ports' source module
499 that is usable as an add-on when building the library.
503 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
504 interrogate the dynamic linker, compatible with the Solaris interface.
506 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
507 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
509 * getifaddrs now uses the netlink interface on Linux to get its information.
510 Implemented by Thorsten Kukuk.
512 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
513 Implemented by Ulrich Drepper.
515 * support for non-executable stacks on x86 has been added. Changes mostly
518 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
521 * getaddrinfo now performs destination address selection according to
526 * Thread-safe interfaces for many functions that access locale data
527 were added in version 2.3, but these features were omitted from NEWS.
528 Many functions have variants with an `_l' suffix that take a `locale_t'
529 object as a parameter rather than consulting the current locale.
530 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
531 create and maintain `locale_t' objects. Additionally, the new function
532 `uselocale' sets "the current locale" (as used by functions not so
533 parameterized) set for an individual thread. These features were added
534 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
536 * The functions getresuid, getresgid, setresuid, and setresgid, which
537 have long been available on Linux, are now declared in <unistd.h>
538 and are now also available on the Hurd.
540 * ELF thread-local storage support (TLS) now works on x86-64.
542 * The new dynamic string token $LIB is expanded in shared library names.
543 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
545 * Aldy Hernandez contributed complete software floating point support for
546 PowerPC machines with no FPU.
548 * fexecve is implemented on Linux.
550 * The `btowc' function should work at least twice as fast due to
551 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
553 * With approriate thread add-ons cancelable functions are now implemented
554 in libc.so as well. No need to call the function in libpthread. This
555 change allowed to finally disable the incorrect and expensive handling
556 of weak definition in ld.so.
558 * Yet more PLT entries in libc.so have been removed. We finally arrived
559 at the bare minimum. Startup times improved appropriately.
561 * Support for the new Linux/x86 system call interface was added. The
562 AT_SYSINFO auxiliary vector entry is recognized and handled.
566 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
569 * iconv (the program and the interface) now accepts empty names (excluding
570 options like //TRANSLIT) to mean "use charset of current locale".
572 * localedef can now transliterate characters in strings which are not in
573 the provided charmap. The information from the input locale is used.
575 * Prelinking support was added for ELF targets. This requires additional
576 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
578 * Read-only stdio streams now use mmap to speed up operation by eliminating
579 copying and buffer underflows. To use add 'm' to the mode string of
580 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
582 * The malloc functions were completely rewritten by Wolfram Gloger based
583 on Doug Lea's malloc-2.7.0.c.
585 * Isamu Hasegawa contributed a completely new and POSIX-conformant
586 implementation of regex.
588 * Bruno Haible upgraded the iconv and locale implementation to support
591 * Contents of the LC_* and LANG environment variables in the CEN style are
592 not recognized anymore. It never was used. Change by Ulrich Drepper.
594 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
595 thread-local storage (TLS) ABI on some platforms.
596 Changes by Ulrich Drepper. SH support by Kaz Kojima.
598 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
599 EUC-JISX0213, and TSCII.
601 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
602 BSD-compatible interface for getting all network interface addresses.
603 Implementation for IPv4 by Roland McGrath.
605 * Loading of locale data is faster due to the introduction of a locale
606 archive. Implemented by Roland McGrath and Ulrich Drepper.
608 * Startup times are significantly reduced by not using exported functions
609 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
612 * Steven Munroe contributed a port to PowerPC64/Linux.
616 * The Hurd now uses the GNU libio implementation of stdio rather than the
617 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
619 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
620 with the same behavior as the Linux system call of the same name.
624 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
625 128-bit long double format.
627 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
628 IBM1161, and IBM1162 charsets.
630 * Andreas Jaeger contributed a port to x86-64/Linux.
632 * Peter Bruin contributed a port to PowerPC/Hurd.
634 * libc functions using I/O streams now can handle wide-oriented streams
637 * optimizations in the dynamic linker. Binaries created by recent binutils
638 versions start up quicker due to reduced time spent on relocations.
640 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
644 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
645 asinh, atanh, j0 for the 128-bit long double format.
647 * Bruno Haible updated all the code handling Unicode in some form to
650 * Speed of regex for single-byte locales is back to previous levels.
651 Patch by Isamu Hasegawa.
653 * Alpha, SPARC, and IA-64 now also using floating stacks.
655 * Startup time of internationalized applications greatly improved through
656 iconv cache. Use iconvconfig to generate the cache file.
657 Contributed by Ulrich Drepper.
659 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
660 severe performance problems. Patch by David Mosberger.
662 * The Hurd port got a lot more functionality like AIO, various stdio
663 extensions, etc. Mainly done by Roland McGrath.
665 * mtrace can now lookup symbols in shared libraries.
669 * Intel's IA-64 math library is largely integrated. It provides fast and
670 accurate implementatations for most basic and standard math functions
671 in float, double, and long double format.
673 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
674 and asin for the 96-bit long double format and asin, log, tan for the
675 128-bit long double format.
677 * The beginning of a last-bit accurate math library by IBM Haifa were added.
678 The basic double functions exist today. Contributed by Abraham Ziv
679 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
680 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
682 * An asynchronous name lookup library was added. The interface is designed
683 after POSIX AIO. The proposal was circulated beforehand to get comments.
684 No negative ones came in. Implemented by Ulrich Drepper.
686 * Port to S390/64bit contributed by Martin Schwidefsky
687 <schwidefsky@de.ibm.com>.
689 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
690 of functions for Linux/IA-64.
692 * The RPC code is now thread safe. Threads can now use the same service
693 of different services at the same time. Patch by Eric Norum
694 <eric.norum@usask.ca> with some help by Ulrich Drepper.
696 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
697 family of functions for Linux/S390.
699 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
700 of functions for Linux/x86.
702 * Port to Linux/CRIS contributed by Axis Communications.
706 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
707 we can now check for namespace violations and missing declarations. The
708 result is that almost all headers are now Unix-compliant (as defined in
709 the upcoming XPG6). The negative side is that some programs might need
710 corrections, too, if they depend on the incorrect form of the headers in
711 previous versions which defined too many symbols and included too many
714 * regex now handles multibyte character sets correctly.
715 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
717 * iconv (the program) does now conform to the upcoming XPG6 and handles
718 charmaps. Instead of the charset names the path of charmaps can be
719 provided and the conversion happens based on this data.
720 Contributed by Ulrich Drepper.
722 * The locale program now provides detailed information about the installed
727 only lists the names of the supported locales
731 provides details such as country, language, and codeset name.
732 Contributed by Ulrich Drepper.
736 * The gencat program now parses the input file according to the charset
737 selected by the LC_CTYPE category. This is important for stateful
738 character sets. To make generating catalogs easier there is a way
739 to overwrite the charset selected by the locale: before the first
740 message or $ quote line the catalog can contain a line like
744 to select the charset (ISO-8859-2 in this case).
746 Implemented by Shinya Hanataka and Ulrich Drepper.
748 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
749 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
750 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
752 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
753 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
755 * The LANGUAGE environment variable is now ignored unless the locale is
756 changed from the default "C" locale.
758 * The usual bug fixes.
762 * Greg McGary added runtime support for bounds checking using gcc's
763 new -fbounded-pointers option. ix86 target is complete. PowerPC
766 * Thorsten Kukuk added secure mode support to nscd.
768 * The Berkeley db libraries have been removed.
770 Related, the nss_db module is now in a separate package since it
771 obviously requires a database library being available.
773 * Wide character I/O streams implemented by Ulrich Drepper.
775 * Functions from the extended socket API added by Ulrich Drepper.
777 * Functions feenableexcept and fedisableexcept to control the
778 behaviour of individual exceptions have been added by Andreas Jaeger.
780 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
782 * The resolver code has been updated from bind 8.2.3-T5B which supports
783 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
786 This change could in some situations effect backward compatibility. Since
787 now `_res' is a thread-local instead of a global variable, modifying it
788 in one thread does not have any effect in other threads.
790 The resolver library was also extended to allow IPv6 as the transport
791 protocol for the requests. This work was done by Stig Venaas.
793 * Compatibility code for K&R C compilers has been removed from the
794 header files. A ISO C compiler is needed to use the library
795 (conforming to either C89 or C99 standard).
797 * Complete rewrite of the localedef program to support multibyte character
798 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
799 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
800 Implemented by Ulrich Drepper.
802 Bruno Haible significantly improved the generation and use of the data
803 structures for the wide character tables.
805 * Plural handling in gettext implemented by Ulrich Drepper.
807 * The utmp daemon has been removed.
809 * The port to MIPS-Linux has been finished by Andreas Jaeger.
811 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
814 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
816 * POSIX barriers implemented by Kaz Kylheku.
818 * POSIX spawn function family implemented by Ulrich Drepper.
820 * POSIX spinlocks are now available.
822 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
824 * the configure option --enable-kernel=X.Y.Z allows to strip out
825 compatibility for kernel versions before X.Y.Z. This is currently only
826 implemented for Linux.
828 * the sockaddr_in6 structure changed. The IPv6 working group added a new
829 field sin6_scope_id. This means that all programs using IPv6 should be
830 recompiled. Don't expect binary compatibility with previous glibc
833 * various conversion modules for IBM character sets contributed by
836 * IA-64 port by Jes Sorensen and HJ Lu.
838 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
839 Compiling the GNU C Library for Linux/ia64
840 ******************************************
842 Please refer to the file INSTALL in the same directory as you found
843 this file for general information about configuring and compiling
846 For general inquiries about glibc under Linux/ia64 please use the
847 following mailing list linux-ia64@linuxia64.org or one of the relevant
850 Recommended Tools for Compilation
851 =================================
853 In order for glibc-2.2 to build correctly on the ia64 you need at
854 least the following versions of the GNU tools (the :
856 * The Cygnus toolchain snapshot for the ia64 as of August 4
857 including the provided set of patches. It is however recommend
858 you use the October 24 toolchain snapshot or a more recent version.
860 OR alternatively you can try the following (the Cygnus toolchain is
861 the recommended solution):
863 * GCC and binutils, GAS and GNU LD out of CVS from
864 sources.redhat.com as of August 28, 2000 or later. The CVS tree
865 may require special patches to work properly on the ia64.
867 Configuring and compiling GNU Libc for Linux/ia64
868 =================================================
870 The library requires Linux kernel version 2.4.0-test4-000728 or
871 later to funtion properly. Besides that it support for debug libraries
872 is currently untested. Hence the following options
873 are required for configuring the library:
875 --disable-debug --enable-kernel=2.4.0
877 It is also important that you make sure the library picks up the
878 appropriate kernel header files, if you do not have recent enough
879 kernel headers in /usr/src/linux/include, you should use the
880 --with-headers=<path> option to specify the location.
882 As an example I personally use the following options to configure
887 --enable-kernel=2.4.0
891 --with-headers=/home/jes/linux/include
896 Jes Sorensen <jes@linuxcare.com>,
898 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
912 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
914 * New xdr functions are added; some rpc functions are now 64bit clean.
916 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
918 * Fixed known incompatibilities with glibc 2.0.
920 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
922 * Optimized a number of functions (especially the ELF dynamic loader).
924 * Update timezone data files.
926 * lots of charmaps corrections
928 * some new locale definitions and charmaps
933 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
934 conform to POSIX member type requirements. Symbol versions have been
935 adjusted as needed within the library, and for direct use by applications,
936 but there is potential for problems if third-party libraries use
937 struct timeval as part of their interface. This does not present
938 a problem for X and other "essential" system libraries.
940 * An additional locale model to support C++ Standard Library locale
941 model and probably more was implemented by Ulrich Drepper.
943 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
946 * Miles Bader provided the `argp' function family to support hierachical
947 command line argument parsing, layered on top of getopt.
949 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
951 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
954 * scanf recognizes the %a and %A format for scanning floating point numbers.
956 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
957 information and interfaces for the available integer types.
959 * about 130 new math functions were added to implement the ISO C9x math
962 * the new header <complex.h> contains definitions of the complex math
963 functions from ISO C 9X.
965 * the new header <tgmath.h> defines generic macros to use complex or
966 real valued functions.
968 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
970 * Andreas Jaeger provided a test suite for the math library.
972 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
974 * Ulrich Drepper added character set conversion functions (iconv).
976 * Optimized string functions have been added.
978 * The localedata addon is now part of glibc.
980 * An implementation of profiling shared libraries was added by Ulrich Drepper.
982 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
983 daemon for NSS (nscd).
985 Missing a better place here are some numbers on improvements. Under
986 Linux 2.1.125 un-tar-ing the kernel sources takes
990 using local files 12.19s 6.88s 22.91s
992 using NIS 13.92s 8.91s 26.34s
994 using NIS & nscd 10.37s 7.34s 25.30s
996 using NIS+ 27.57s 30.37s 640.46s
998 using NIS+ & nscd 10.25s 7.83s 26.51s
1000 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1002 Keep in mind that non-namelookup related operations dominate above times.
1003 It was just a common complain that using NIS+ unpacking the kernel is
1006 [1] The old nscd implementation is not available anymore since it was
1007 distributed with glibc up to version 2.0.98 and thus is now replaced.
1009 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1011 * Mark Kettenis provided a Hesiod NSS module.
1013 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1014 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1016 * rcmd can now handle netgroups (Dick Streefland).
1018 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1021 * Support for the IPv6 protocol has been added to the socket API, as per the
1022 latest draft standards.
1024 * Support for Linux 2.2 has been added.
1026 * Interface changes relative to the latest 2.0.x release:
1027 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1028 addseverity NEW: Unix98
1029 alphasort64 NEW: LFS
1030 argp_err_exit_status NEW: argp, GNU ext
1031 argp_error NEW: argp, GNU ext
1032 argp_failure NEW: argp, GNU ext
1033 argp_help NEW: argp, GNU ext
1034 argp_parse NEW: argp, GNU ext
1035 argp_program_bug_address NEW: argp, GNU ext
1036 argp_program_version NEW: argp, GNU ext
1037 argp_program_version_hook NEW: argp, GNU ext
1038 argp_state_help NEW: argp, GNU ext
1039 argp_usage NEW: argp, GNU ext
1040 authdes_create NEW: Secure RPC
1041 authdes_getucred NEW: Secure RPC
1042 authdes_pk_create NEW: Secure RPC
1043 backtrace NEW: GNU ext.
1044 backtrace_symbols NEW: GNU ext.
1045 backtrace_symbols_fd NEW: GNU ext.
1047 cacosf NEW: ISO C 9x
1048 cacosh NEW: ISO C 9x
1049 cacoshf NEW: ISO C 9x
1050 cacoshl NEW: ISO C 9x
1051 cacosl NEW: ISO C 9x
1058 casinf NEW: ISO C 9x
1059 casinh NEW: ISO C 9x
1060 casinhf NEW: ISO C 9x
1061 casinhl NEW: ISO C 9x
1062 casinl NEW: ISO C 9x
1064 catanf NEW: ISO C 9x
1065 catanh NEW: ISO C 9x
1066 catanhf NEW: ISO C 9x
1067 catanhl NEW: ISO C 9x
1068 catanl NEW: ISO C 9x
1069 cbc_crypt NEW: Secure RPC
1073 ccoshf NEW: ISO C 9x
1074 ccoshl NEW: ISO C 9x
1080 cimagf NEW: ISO C 9x
1081 cimagl NEW: ISO C 9x
1082 clearerr_locked REMOVED
1083 clntunix_create NEW: sunrpc ext
1085 clog10 NEW: ISO C 9x
1086 clog10f NEW: ISO C 9x
1087 clog10l NEW: ISO C 9x
1097 cprojf NEW: ISO C 9x
1098 cprojl NEW: ISO C 9x
1100 crealf NEW: ISO C 9x
1101 creall NEW: ISO C 9x
1106 csinhf NEW: ISO C 9x
1107 csinhl NEW: ISO C 9x
1110 csqrtf NEW: ISO C 9x
1111 csqrtl NEW: ISO C 9x
1115 ctanhf NEW: ISO C 9x
1116 ctanhl NEW: ISO C 9x
1118 des_setparity NEW: Secure RPC
1119 ecb_crypt NEW: Secure RPC
1120 endutxent NEW: Unix98
1122 exp10f NEW: ISO C 9x
1123 exp10l NEW: ISO C 9x
1127 fattach NEW: STREAMS
1128 fdetach NEW: STREAMS
1132 feclearexcept NEW: ISO C 9x
1133 fegetenv NEW: ISO C 9x
1134 fegetexceptflag NEW: ISO C 9x
1135 fegetround NEW: ISO C 9x
1136 feholdexcept NEW: ISO C 9x
1138 feraiseexcept NEW: ISO C 9x
1139 ferror_locked REMOVED
1140 fesetenv NEW: ISO C 9x
1141 fesetexceptflag NEW: ISO C 9x
1142 fesetround NEW: ISO C 9x
1143 fetestexcept NEW: ISO C 9x
1144 feupdateenv NEW: ISO C 9x
1145 fflush_locked REMOVED
1149 fgets_unlocked NEW: GNU ext.
1150 fileno_locked REMOVED
1162 fputc_locked REMOVED
1163 fputs_unlocked NEW: GNU ext.
1164 fread_unlocked NEW: GNU ext.
1169 fstatvfs NEW: Unix98
1173 ftruncate64 NEW: LFS
1175 fwrite_unlocked NEW: GNU ext.
1176 gai_strerror NEW: IPv6
1180 getchar_locked REMOVED
1182 getdate_err NEW: Unix98
1183 getdate_r NEW: GNU ext.
1185 getnameinfo NEW: IPv6
1186 getnetname NEW: Secure RPC
1187 getpmsg NEW: STREAMS
1188 getpt NEW: Unix98 PTY
1189 getrlimit64 NEW: LFS
1190 getutxent NEW: Unix98
1191 getutxid NEW: Unix98
1192 getutxline NEW: Unix98
1193 glob64 NEW: GNU ext.
1194 globfree64 NEW: GNU ext.
1195 gnu_get_libc_release NEW: GNU ext.
1196 gnu_get_libc_version NEW: GNU ext.
1197 grantpt NEW: Unix98 PTY
1198 host2netname NEW: Secure RPC
1200 iconv_close NEW: iconv
1201 iconv_open NEW: iconv
1202 if_freenameindex NEW: IPv6
1203 if_indextoname NEW: IPv6
1204 if_nameindex NEW: IPv6
1205 if_nametoindex NEW: IPv6
1206 in6addr_any NEW: IPv6
1207 in6addr_loopback NEW: IPv6
1208 inet6_isipv4mapped NEW: IPv6
1209 isastream NEW: STREAMS
1210 iswblank NEW: GNU ext.
1211 key_decryptsession NEW: Secure RPC
1212 key_decryptsession_pk NEW: Secure RPC
1213 key_encryptsession NEW: Secure RPC
1214 key_encryptsession_pk NEW: Secure RPC
1215 key_gendes NEW: Secure RPC
1216 key_get_conv NEW: Secure RPC
1217 key_secretkey_is_set NEW: Secure RPC
1218 key_setnet NEW: Secure RPC
1219 key_setsecret NEW: Secure RPC
1220 llrint NEW: ISO C 9x
1221 llrintf NEW: ISO C 9x
1222 llrintl NEW: ISO C 9x
1223 llround NEW: ISO C 9x
1224 llroundf NEW: ISO C 9x
1225 llroundl NEW: ISO C 9x
1230 lrintf NEW: ISO C 9x
1231 lrintl NEW: ISO C 9x
1232 lround NEW: ISO C 9x
1233 lroundf NEW: ISO C 9x
1234 lroundl NEW: ISO C 9x
1236 makecontext NEW: Unix98
1237 mempcpy NEW: GNU ext.
1240 modify_ldt NEW: kernel
1244 nearbyint NEW: ISO C 9x
1245 nearbyintf NEW: ISO C 9x
1246 nearbyintl NEW: ISO C 9x
1247 netname2host NEW: Secure RPC
1248 netname2user NEW: Secure RPC
1249 nexttoward NEW: ISO C 9x
1250 nexttowardf NEW: ISO C 9x
1251 nexttowardl NEW: ISO C 9x
1255 passwd2des NEW: Secure RPC
1257 pow10f NEW: GNU ext.
1258 pow10l NEW: GNU ext.
1261 printf_size NEW: GNU ext.
1262 printf_size_info NEW: GNU ext.
1263 profil_counter REMOVED
1264 pthread_mutexattr_getkind_np REPLACED
1265 pthread_mutexattr_setkind_np REPLACED
1266 ptsname NEW: Unix98 PTY
1267 ptsname_r NEW: Unix98 PTY
1269 putchar_locked REMOVED
1270 putgrent NEW: GNU ext.
1272 putpmsg NEW: STREAMS
1273 pututxline NEW: Unix98
1277 readdir64_r NEW: LFS
1278 remquo NEW: ISO C 9x
1279 remquof NEW: ISO C 9x
1280 remquol NEW: ISO C 9x
1282 roundf NEW: ISO C 9x
1283 roundl NEW: ISO C 9x
1285 scalbln NEW: ISO C 9x
1286 scalblnf NEW: ISO C 9x
1287 scalblnl NEW: ISO C 9x
1289 sendfile NEW: kernel
1290 setcontext NEW: Unix98
1291 setrlimit64 NEW: LFS
1292 setutxent NEW: Unix98
1294 sigignore NEW: Unix98
1295 sigqueue NEW: POSIX.1b
1296 sigrelse NEW: Unix98
1297 sigset NEW: POSIX.1b
1298 sigtimedwait NEW: POSIX.1b
1299 sigwaitinfo NEW: POSIX.1b
1300 sincos NEW: GNU ext.
1301 sincosf NEW: GNU ext.
1302 sincosl NEW: GNU ext.
1306 strcasestr NEW: GNU ext.
1307 strtoimax NEW: ISO C 9x
1308 strtoumax NEW: ISO C 9x
1309 strverscmp NEW: GNU ext.
1310 svcauthdes_stats NEW: Secure RPC
1311 svcunix_create NEW: sunrpc etx
1312 svcunixfd_create NEW: sunrpc ext
1313 swapcontext NEW: Unix98
1314 tcgetsid NEW: Unix98 PTY
1315 tdestroy NEW: GNU ext.
1316 tgamma NEW: ISO C 9x
1317 tgammaf NEW: ISO C 9x
1318 tgammal NEW: ISO C 9x
1322 truncf NEW: ISO C 9x
1323 truncl NEW: ISO C 9x
1325 unlockpt NEW: Unix98 PTY
1326 updwtmpx NEW: Unix98
1327 user2netname NEW: Secure RPC
1328 utmpxname NEW: Unix98
1329 versionsort NEW: GNU ext.
1330 versionsort64 NEW: GNU ext.
1332 wcscasecmp NEW: GNU ext.
1333 wcsncasecmp NEW: GNU ext.
1334 wcsnlen NEW: GNU ext.
1335 wcstoimax NEW: ISO C 9x
1336 wcstoll NEW: ISO C 9x
1337 wcstoull NEW: ISO C 9x
1338 wcstoumax NEW: ISO C 9x
1340 wordexp NEW: POSIX.2
1341 wordfree NEW: POSIX.2
1342 write_profiling REMOVED
1343 xdecrypt NEW: Secure RPC
1344 xdr_authdes_cred NEW: Secure RPC
1345 xdr_authdes_verf NEW: Secure RPC
1346 xdr_cryptkeyarg NEW: Secure RPC
1347 xdr_cryptkeyarg2 NEW: Secure RPC
1348 xdr_cryptkeyres NEW: Secure RPC
1349 xdr_getcredres NEW: Secure RPC
1350 xdr_key_netstarg NEW: Secure RPC
1351 xdr_key_netstres NEW: Secure RPC
1352 xdr_keybuf NEW: Secure RPC
1353 xdr_keystatus NEW: Secure RPC
1354 xdr_netnamestr NEW: Secure RPC
1355 xdr_sizeof NEW: Secure RPC
1356 xdr_unixcred NEW: sunrpc ext
1357 xencrypt NEW: Secure RPC
1358 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1369 * inet_ntoa is thread-safe
1371 * updwtmp is moved from libutil to libc
1373 * rewrite of cbrt function
1375 * update of timezone data
1389 * add atoll function
1391 * fix complex problems in Berkeley DB code
1393 * fix math functions
1397 * fixed lots of header problems (especially Linux/GNU specific)
1399 * dynamic loader preserves all registers
1401 * Roland McGrath provided support for handling of auxiliary objects in
1402 the ELF dynamic loader.
1404 * support for parallel builds is improved
1408 * GNU extensions are no longer declared by default. To enable them you
1409 must define the macro `_GNU_SOURCE' in your program or compile with
1412 * The library has changed from using GNU ld symbol aliases to using weak
1413 symbols where available. The ELF object file format supports weak
1414 symbols; GNU ld also supports weak symbols in the a.out format. (There
1415 is also now support for other GNU ld extensions in ELF. Use the
1416 `--with-elf' option to configure to indicate you have ELF, and
1417 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1418 of many files which contained only symbol aliases, reducing the size of
1419 the source and the compiled library; many other files were renamed to
1420 less cryptic names previously occupied by the symbol alias files.
1421 There is a new header file <elf.h> for programs which operate on
1422 files in the ELF format.
1424 * Converted to Autoconf version 2, so `configure' has more options.
1425 Run `configure --help' to see the details.
1427 * The library can now be configured to build profiling, highly-optimized
1428 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1429 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1430 `configure' enable building these extra libraries. The shared library is
1431 built by default when using both ELF and GNU ld. When shared libraries
1432 are enabled, the new library `-ldl' is available for arbitrary run-time
1433 loading of shared objects; its interface is defined in <dlfcn.h>. The
1434 new header file <link.h> gives access to the internals of the run-time
1435 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1436 application of same name on other systems and it provides information
1437 about dynamically linked binaries.
1439 * The C library now provides the run-time support code for profiling
1440 executables compiled with `-pg'. Programs can control the profiling code
1441 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1442 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1443 the support for this file format was contributed by David Mosberger-Tang.
1445 * The math code has been replaced with a math library based on fdlibm from
1446 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1447 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1448 functions. The math functions now reside in a separate library, so
1449 programs using them will need to use `-lm' their linking commands.
1451 * John C. Bowman contributed optimized ix87 assembler inline functions.
1453 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1454 mechanism similar to that found in Solaris 2. This is now used for the
1455 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1456 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1457 file controls what services are used for each individual database. This
1458 works by loading shared libraries with names specified in `nsswitch.conf',
1459 so service modules can be changed or added at any time without even
1460 relinking any program. Currently there are the file, db, and NIS based
1461 NSS services available.
1463 * The new functions `strtoq' and `strtouq' parse integer values from
1464 strings, like `strtol' and `strtoul', but they return `long long int' and
1465 `unsigned long long int' values, respectively (64-bit quantities).
1467 * The new functions `strtof' and `strtold' parse floating-point values from
1468 strings, like `strtod', but they return `float' and `long double' values,
1469 respectively (on some machines `double' and `long double' are the same).
1471 * Ulrich Drepper has contributed new implementations of the floating-point
1472 printing and reading code used in the `printf' family of functions and
1473 `strtod', `strtof', and `strtold'. These new functions are perfectly
1474 accurate, and much faster than the old ones.
1476 * The implementation of the POSIX locale model was completely rewritten by
1477 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1478 to compile the POSIX locale definition.
1480 * The former dummy implementations of the strcoll and strxfrm function are
1481 now replaced by fully functional code contributed by Ulrich Drepper. The
1482 collation information comes from the POSIX locale definitions.
1484 * The new header <langinfo.h> defines an interface for accessing
1485 various locale-dependent data (using the locale chosen with `setlocale').
1487 * Ulrich Drepper has contributed a new suite of functions for operation on
1488 wide-character and multibyte-character strings, in <wchar.h>;
1489 and classification and case conversion of wide characters, in <wctype.h>.
1490 These new functions are conforming to the ISO C, Amendement 1 specification.
1492 * There is now a second implementation of the standard I/O library available.
1493 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1494 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1496 * You can now use positional parameter specifications in format strings
1497 for the `printf' and `scanf' families of functions. For example,
1498 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1499 ``Number 6, Mr Jones''. This is mainly useful when providing different
1500 format strings for different languages, whose grammars may dictate
1501 different orderings of the values being printed. To support this
1502 feature, the interface for `register_printf_handler' has changed; see
1503 the header file <printf.h> for details.
1505 * The `printf' and `scanf' families of functions now understand a new
1506 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1507 to group numbers as indicated by the locale; for `scanf' and friends, this
1508 says to accept as valid only a number with all the proper grouping
1509 separators in the right places. In the default "C" locale, numbers are
1510 not grouped; but locales for specific countries will define the usual
1511 conventions (i.e. separate thousands with `,' in the US locale).
1513 * The pgrp functions have been regularized, slightly incompatibly but much
1514 less confusingly. The core functions are now `getpgid' and `setpgid',
1515 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1516 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1517 provided for compatibility. There is no longer an incompatible `getpgrp'
1518 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1520 * The new header file <fts.h> and suite of functions simplify programs that
1521 operate on directory trees. This code comes from 4.4 BSD.
1523 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1524 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1525 NSS scheme used in glibc.
1527 * There is a new malloc debugging hook `__memalign_hook'.
1529 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1530 `unsigned int' in <sys/types.h>. These are for compatibility only and
1531 their use is discouraged.
1533 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1534 done differently, so that it works even without GNU ld.
1536 * New function `euidaccess' checks allowed access to a file like `access',
1537 but using the effective IDs instead of the real IDs.
1539 * The time zone data files have been updated for the latest and greatest
1540 local time conventions of the countries of the world.
1542 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1545 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1546 for formatting floating-point numbers. They are provided only for
1547 compatibility; new programs should use `sprintf' instead. There are
1548 also equivalent function for the `long double' floating-point type and
1549 all functions also exist in a reentrant form.
1551 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1552 functions for maintaining the login-record files (primarily of use to
1553 system programs such as `login'), and convenient functions for
1554 allocating and initializing a pseudo-terminal (pty) device.
1556 * Ulrich Drepper has contributed new support for System V style
1557 shared memory and IPC on systems that support it.
1559 * Ulrich Drepper has contributed several miscellaneous new functions found
1560 in System V: The `hsearch' family of functions provide an effective
1561 implementation of hash tables; `a64l' and `l64a' provide a very simple
1562 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1565 * Ulrich Drepper has contributed new reentrant counterparts for the
1566 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1568 * Ulrich Drepper has contributed new, highly-optimized versions of several
1569 string functions for the i486/Pentium family of processors.
1571 * Ulrich Drepper has updated the Linux-specific code, based largely
1572 on work done in Hongjiu Lu's version of GNU libc for Linux.
1573 The GNU library now supports Linux versions 2.0.10 and later,
1574 using the ELF object file format (i[3456]86-*-linux).
1576 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1578 * David Mosberger-Tang and Richard Henderson have ported the C library
1579 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1580 dynamic linking support for ELF/Alpha.
1582 * Richard Henderson contributed several Alpha optimized assembler function
1583 for arithmetic and string handling.
1585 * Ulrich Drepper has contributed a new set of message catalog functions to
1586 support multiple languages using the <libintl.h> interface, for use with
1587 his new package GNU gettext. Translation volunteers have contributed
1588 catalogs of the library's messages in Spanish, German, and Korean.
1590 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1591 program and the `catgets' function for reading the catalog files it
1592 creates. (The <libintl.h> interface is preferred; we include the
1593 <nl_types.h> interface using `catgets' only for source compatibility with
1594 programs already written to use it.)
1596 * New header file <values.h> gives SVID-compatible names for <limits.h>
1599 * Various new macros, declarations, and small header files for compatibility
1602 * New function `group_member' is a convenient way to check if a process has
1603 a given effective group ID.
1605 * When using GCC 2.7 and later, the socket functions are now declared in a
1606 special way so that passing an argument of type `struct sockaddr_in *',
1607 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1608 `struct sockaddr *' type, does not generate a type-clash warning.
1610 * New function `error' declared in header file <error.h> is a convenient
1611 function for printing error messages and optionally exiting; this is the
1612 canonical function used in GNU programs. The new functions `err', `warn',
1613 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1614 doing the same thing.
1616 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1617 POSIX.2 `glob' function to do ~ and {...} expansion.
1619 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1620 `clearenv' which is used in POSIX.9 is also available.
1622 * New function `getsid' returns session ID number on systems that support it.
1624 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1625 files <db.h> and <mpool.h> provide a rich set of functions for several
1626 types of simple databases stored in memory and in files, and <ndbm.h> is
1627 an old `ndbm'-compatible interface using the `db' functions. Link with
1628 `-ldb' to get these functions.
1630 * New macro `strdupa' copies a string like `strdup', but uses local stack
1631 space from `alloca' instead of dynamic heap space from `malloc'.
1633 * New function `strnlen' is like `strlen' but searches only a given maximum
1634 number of characters for the null terminator. `stpncpy', `strndup' and
1635 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1638 * New function `statfs' in header <sys/statfs.h>.
1640 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1641 provide convenient functions for operating on blocks of null-terminated
1644 * A new suite of functions in <utmp.h> handle all the details of reading
1645 and writing the utmp file.
1647 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1650 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1651 completely POSIX compliant and also implemented the extended functionality
1652 to handle alternate digit representation and alternate era date formats.
1654 * Ulrich Drepper provided an implementation of the `strptime' function
1655 defined in XPG4.2 which transforms a string into a `struct tm' value.
1657 * Paul Eggert provided the tzselect shell script as part of the timezone
1658 code. The shell script makes it easy to select the correct timezone
1661 * The implementation of the malloc family of functions is completely replaced
1662 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1663 The implementation uses the mmap function (if available) and it is
1664 optimized for the use in multi threaded programs.
1666 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1667 functions. This new functionality is usable by specifying a special
1668 salt string and it is compatible with implementation on *BSD systems.
1670 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1671 `getsubopt' to handle second level command line options, `bsd_signal'
1672 to access BSD style `signal' functionality, the obsolete `regexp' style
1675 * the `lchown' function is available on system which support this
1678 * The implementation of the shadow password handling function was contributed
1681 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1683 * POSIX.1g support was added. The <sys/select.h> header is available,
1684 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1685 implementation of `getaddrinfo'.
1689 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1691 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1692 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1694 * The new function `daemon' from 4.4 BSD is useful for server programs that
1695 want to put themselves in the background.
1697 * Joel Sherrill has contributed support for several standalone boards that
1698 run without an operating system.
1700 * `printf', `scanf' and friends now accept a `q' type modifier for long
1701 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1703 * All of the code taken from BSD (notably most of the math and networking
1704 routines) has been updated from the BSD 4.4-Lite release.
1706 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1708 * The new functions `getdomainname' and `setdomainname' fetch or change the
1709 YP/NIS domain name. These are system calls which exist on systems which
1712 * The time zone data files have been updated for the latest international
1715 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1716 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1720 * The C library now includes support for Sun RPC, from Sun's free
1721 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1722 are included. (There is still no support for YP.)
1724 * Tom Quinn has contributed a port of the C library to SGI machines running
1725 Irix 4 (mips-sgi-irix4).
1727 * The new `lockf' function is a simplified interface to the locking
1728 facilities of `fcntl', included for compatibility.
1730 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1732 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1734 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1737 * The error message printed by `assert' for a failed assertion now includes
1738 the name of the program (if using GNU ld) and the name of the calling
1739 function (with versions of GCC that support this).
1741 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1743 * The library now includes the <sys/mman.h> header file and memory
1744 management functions `mmap', `munmap', `mprotect', `msync', and
1745 `madvise', on systems that support those facilities.
1747 * The interface for `mcheck' has changed slightly: the function called to
1748 abort the program when an allocation inconsistency is detected now takes
1749 an argument that indicates the type of failure. The new function
1750 `mprobe' lets you request a consistency check for a particular block at
1751 any time (checks are normally done only when you call `free' or `realloc'
1754 * It is now possible to easily cross-compile the C library, building on one
1755 system a library to run on another machine and/or operating system. All
1756 you need to do is set the variable `HOST_CC' in `configparms' to the
1757 native compiler for programs to run on the machine you are building on (a
1758 few generator programs are used on Unix systems); set `CC' to the
1761 * The new function `fexecve' (only implemented on the GNU system) executes
1762 a program file given a file descriptor already open on the file.
1766 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1767 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1769 * You can set the variable `libprefix' in `configparms' to specify a prefix
1770 to be prepended to installed library files; this makes it easy to install
1771 the GNU C library to be linked as `-lgnuc' or whatever.
1773 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1774 copies a limited number of characters from a string, and returns the
1775 address of the last character written.
1777 * You no longer need to check for whether the installed `stddef.h' is
1778 compatible with the GNU C library. configure now checks for you.
1780 * You can now define a per-stream `fileno' function to convert the
1781 stream's cookie into an integral file descriptor.
1783 * ``malloc (0)'' no longer returns a null pointer. Instead, it
1784 allocates zero bytes of storage, and returns a unique pointer which
1785 you can pass to `realloc' or `free'. The behavior is undefined if
1786 you dereference this pointer.
1788 * The C library now runs on Sony NEWS m68k machines running either
1789 NewsOS 3 or NewsOS 4.
1791 * The new `syscall' function is a system-dependent primitive function
1792 for invoking system calls. It has the canonical behavior on Unix
1793 systems, including unreliable return values for some calls (such as
1794 `pipe', `fork' and `getppid').
1796 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
1797 to `EAGAIN', which is the preferred name. On systems whose kernels
1798 use two distinct codes, the C library now translates EWOULDBLOCK to
1799 EAGAIN in every system call function.
1803 * The GNU C Library Reference Manual is now distributed with the library.
1804 `make dvi' will produce a DVI file of the printed manual.
1805 `make info' will produce Info files that you can read on line using C-h i
1806 in Emacs or the `info' program.
1807 Please send comments on the manual to bug-glibc-manual@gnu.org.
1809 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
1811 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
1813 * Jason Merrill has contributed a port to the Sequent Symmetry running
1814 Dynix version 3 (i386-sequent-dynix).
1816 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
1817 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
1819 * New function `memory_warnings' lets you arrange to get warnings when
1820 malloc is running out of memory to allocate, like Emacs gives you.
1822 * The C library now contains the relocating allocator used in Emacs 19 for
1823 its editing buffers. This allocator (ralloc) minimizes allocation
1824 overhead and fragmentation by moving allocated regions around whenever it
1825 needs to. You always refer to a ralloc'd region with a "handle" (a
1826 pointer to a pointer--an object of type `void **').
1828 * There is a new `printf' format: `%m' gives you the string corresponding
1829 to the error code in `errno'.
1831 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
1832 or `%[' conversion, but instead of filling in a fixed-sized buffer you
1833 pass, the `a' modifier says to fill in a `char **' you pass with a
1836 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
1837 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
1838 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
1840 * `mkstemp' is a traditional Unix function to atomically create and open a
1841 uniquely-named temporary file.
1845 * The standard location for the file that says what the local timezone is
1846 has changed again. It is now `/usr/local/etc/localtime' (or more
1847 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
1849 * The distribution no longer contains any files with names longer than 14
1852 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
1853 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
1855 * New functions `ttyslot' and `syslog' from 4.4 BSD.
1859 * The configuration process has changed quite a bit. The `configure'
1860 script is now used just like the configuration scripts for other GNU
1861 packages. The `sysdeps' directory hierarchy is much rearranged.
1862 The file `INSTALL' explains the new scheme in detail.
1864 * The header files no longer need to be processed into ANSI C and
1865 traditional C versions. There is just one set of files to install, and
1866 it will work with ANSI or old C compilers (including `gcc -traditional').
1868 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
1869 MIPS DECStation running Ultrix 4.
1871 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
1872 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
1873 made itself into a shared library.
1875 * Yet further improved support for the i386, running 4.3 BSD-like systems
1876 (such as Mach 3 with the Unix single-server), or System V.
1878 * New function `strncasecmp' to do case-insensitive string comparison
1879 with limited length.
1881 * New function `strsep' is a reentrant alternative to `strtok'.
1883 * New functions `scandir' and `alphasort' for searching directories.
1885 * New function `setenv' is a better interface to `putenv'.
1887 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
1888 function for traversing a directory tree.
1890 * The GNU obstack package is now also part of the C library.
1891 The new function `open_obstack_stream' creates a stdio stream that
1892 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
1893 formatted output directly to an obstack.
1895 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
1896 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
1898 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
1900 * The new functions `strfry' and `memfrob' do mysterious and wonderful
1901 things to your strings.
1903 * There are some new test programs: test-fseek, testmb, and testrand.
1905 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
1906 These ports are not finished, but are a good starting place for really
1907 supporting those systems.
1909 * `/etc/localtime' is now the standard location for the file that says what
1910 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
1911 This follows the general principle that `/etc' is the place for all local
1912 configuration files.
1914 * The C library header files now use `extern "C"' when used by the C++
1915 compiler, so the C library should now work with C++ code.
1917 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
1918 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
1921 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
1922 function which uses the `merge sort' algorithm, and is said to be
1923 significantly faster than the old GNU `qsort' function. Merge sort is
1924 now the standard `qsort' function. The new algorithm can require a lot
1925 of temporary storage; so, the old sorting function is called when the
1926 required storage is not available.
1928 * The C library now includes Michael Glad's Ultra Fast Crypt, which
1929 provides the Unix `crypt' function, plus some other entry points.
1931 * The code and header files taken from 4.4 BSD have been updated with the
1932 latest files released from Berkeley.
1934 ----------------------------------------------------------------------
1935 Copyright information:
1937 Copyright (C) 1992-2009, 2010, 2011 Free Software Foundation, Inc.
1939 Permission is granted to anyone to make or distribute verbatim copies
1940 of this document as received, in any medium, provided that the
1941 copyright notice and this permission notice are preserved,
1942 thus giving the recipient permission to redistribute in turn.
1944 Permission is granted to distribute modified versions
1945 of this document, or of portions of it,
1946 under the above conditions, provided also that they
1947 carry prominent notices stating who last changed them.
1950 version-control: never