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1 @node Contributors, Free Manuals, Platform, Top
2 @c %MENU% Who wrote what parts of the GNU C Library
3 @appendix Contributors to @theglibc{}
4
5 @Theglibc{} project would like to thank its many contributors.
6 Without them the project would not have been nearly as successful as
7 it has been. Any omissions in this list are accidental. Feel free to
8 file a bug in bugzilla if you have been left out or some of your
9 contributions are not listed. Please keep this list in alphabetical
10 order.
11
12 @itemize @bullet
13
14 @item
15 Nick Alcock for contributing fixes to allow @theglibc{} to be built with the
16 stack smashing protector enabled.
17
18 @item
19 John David Anglin for various fixes to the hppa port.
20
21 @item
22 Albert ARIBAUD for Y2038 related fixes.
23
24 @item
25 Ryan S. Arnold for his improvements for Linux on PowerPC and his direction
26 as FSF Project Steward for @theglibc{}.
27
28 @item
29 Miles Bader for writing the @code{argp} argument-parsing package, and the
30 @code{argz}/@code{envz} interfaces.
31
32 @item
33 Ralf B@"achle for contributing @file{fpu_control.h},
34 @file{regdef.h}, @file{sgidefs.h}, @file{sys/asm.h}, and @file{sys/regdef.h}
35 under the @file{sysdeps/mips} directory.
36
37 @item
38 Jeff Bailey for his maintainership of the HPPA architecture.
39
40 @item
41 Petr Baudis for bug fixes and testing.
42
43 @item
44 Anton Blanchard for various fixes.
45
46 @item
47 Stephen R. van den Berg for contributing a highly-optimized
48 @code{strstr} function.
49
50 @item
51 Ond@v{r}ej B@'ilka for contributing optimized string routines for x64 and various
52 fixes.
53
54 @item
55 Eric Blake for adding O(n) implementations of @code{memmem},
56 @code{strstr} and @code{strcasestr}.
57
58 @item
59 Philip Blundell for the ports to Linux/ARM
60 (@code{arm-@var{ANYTHING}-linuxaout}) and ARM standalone
61 (@code{arm-@var{ANYTHING}-none}), as well as for parts of the IPv6
62 support code.
63
64 @item
65 Per Bothner for the implementation of the @code{libio} library which
66 is used to implement @code{stdio} functions.
67
68 @item
69 Mark Brown for his direction as part of @theglibc{} steering
70 committee.
71
72 @item
73 Thomas Bushnell for his contributions to Hurd.
74
75 @item
76 Rogerio Alves Cardoso for various fixes to PowerPC.
77
78 @item
79 Paul Clarke for optimized functions on PowerPC.
80
81 @item
82 Palmer Dabbelt for contributing the port to Linux/RISC-V.
83
84 @item
85 DJ Delorie for maintenance of Linux/RISC-V, and various fixes.
86
87 @item
88 Wilco Dijkstra for various fixes.
89
90 @item
91 Liubov Dmitrieva for optimized string and math functions on x86-64 and
92 x86.
93
94 @item
95 Ulrich Drepper for his many contributions in almost all parts of
96 @theglibc{}, including:
97 @itemize @bullet
98 @item writing most of the POSIX Threads Library originally.
99 @item internationalization support, including the @code{locale} and
100 @code{localedef} utilities.
101 @item Linux i386/ELF support
102 @item the @code{hsearch} and @code{drand48} families of functions,
103 reentrant @samp{@dots{}@code{_r}} versions of the @code{random}
104 family; System V shared memory and IPC support code
105 @item several highly-optimized string functions for i@var{x}86
106 processors
107 @item many math functions
108 @item the character conversion functions (@code{iconv})
109 @item the @code{ftw} and @code{nftw} functions
110 @item the floating-point printing function used by @code{printf} and friends
111 and the floating-point reading function used by @code{scanf},
112 @code{strtod} and friends
113 @item the @code{catgets} support and the entire suite of multi-byte
114 and wide-character support functions (@file{wctype.h}, @file{wchar.h}, etc.).
115 @item versioning of objects on the symbol level
116 @end itemize
117
118 @item
119 Richard Earnshaw for continued support and fixes to the various ARM
120 machine files.
121
122 @item
123 Paul Eggert for the @code{mktime} function and for his direction as
124 part of @theglibc{} steering committee.
125
126 @item
127 Steve Ellcey for various fixes.
128
129 @item
130 Mike FABIAN for automating Unicode updates, for updating the locale data
131 for ISO 14651, for updating the library Unicode support, and for various
132 locale updates and fixes.
133
134 @item
135 Tulio Magno Quites Machado Filho for adding a new class of installed
136 headers for low-level platform-specific functionality and one such for
137 PowerPC and various fixes.
138
139 @item
140 Olaf Flebbe and Ralf B@"achle for contributing
141 @file{sysdeps/mips/fpu_control.h}.
142
143 @item
144 Mike Frysinger for his maintaining of the IA64 architecture and for
145 testing and bug fixing.
146
147 @item
148 Martin Galvan for contributing gdb pretty printer support to glibc and adding
149 an initial set of pretty printers for structures in the POSIX Threads library.
150
151 @item
152 Michael Glad for the passphrase-hashing function @code{crypt} and related
153 functions.
154
155 @item
156 Wolfram Gloger for contributing the memory allocation functions
157 functions @code{malloc}, @code{realloc} and @code{free} and related
158 code.
159
160 @item
161 Gabriel F. T. Gomes for his improvements for Linux on PowerPC and for
162 implementing the IEEE 128-bit floating point type for PowerPC.
163
164 @item
165 Torbj@"orn Granlund for fast implementations of many of the string
166 functions (@code{memcpy}, @code{strlen}, etc.).
167
168 @item
169 Michael J. Haertel for writing the merge sort function @code{qsort}
170 and malloc checking functions like @code{mcheck}.
171
172 @item
173 Bruno Haible for his improvements to the @code{iconv} and locale
174 implementations.
175
176 @item
177 Richard Henderson for the port to Linux on Alpha
178 (@code{alpha-@var{anything}-linux}) and software floating-point support.
179
180 @item
181 David Holsgrove for the port to Linux on MicroBlaze.
182
183 @item
184 Leonhard Holz for various fixes.
185
186 @item
187 Daniel Jacobowitz for various fixes and enhancements.
188
189 @item
190 Andreas Jaeger for the port to Linux on x86-64
191 (@code{x86_64-@var{anything}-linux} and his work on Linux for MIPS
192 (@code{mips-@var{anything}-linux}), implementing the @file{ldconfig}
193 program, providing a test suite for the math library and for his
194 direction as part of @theglibc{} steering committee.
195
196 @item
197 Aurelien Jarno for various fixes.
198
199 @item
200 Rical Jasan for contributing various fixes in @theglibc{} manual.
201
202 @item
203 Jakub Jelinek for implementing a number of checking functions,
204 software floating-point support and for
205 his direction as part of @theglibc{} steering committee.
206
207 @item
208 Simon Josefsson for the @code{libidn} add-on.
209
210 @item
211 Geoffrey Keating for the port to Linux on PowerPC
212 (@code{powerpc-@var{anything}-linux}).
213
214 @item
215 Brendan Kehoe for contributing the port to the MIPS DECStation running
216 Ultrix 4 (@code{mips-dec-ultrix4}) and the port to the DEC Alpha
217 running OSF/1 (@code{alpha-dec-osf1}).
218
219 @item
220 Mark Kettenis for implementing the @code{utmpx} interface and a utmp
221 daemon, and for a Hesiod NSS module.
222
223 @item
224 Andi Kleen for implementing pthreads lock elision with TSX.
225
226 @item
227 Kazumoto Kojima for the port of the Mach and Hurd code to the MIPS
228 architecture (@code{mips-@var{anything}-gnu}) and for his work on the
229 SH architecture.
230
231 @item
232 Maxim Kuvyrkov for various fixes.
233
234 @item
235 Andreas Krebbel for his work on Linux for s390 and s390x.
236
237 @item
238 Thorsten Kukuk for providing an implementation for NIS (YP) and NIS+,
239 securelevel 0, 1 and 2 and for the implementation for a caching daemon
240 for NSS (@file{nscd}).
241
242 @item
243 Akhilesh Kumar for various fixes to locales.
244
245 @item
246 Jeff Law for various fixes.
247
248 @item
249 Doug Lea for contributing the memory allocation functions
250 @code{malloc}, @code{realloc} and @code{free} and related
251 code.
252
253 @item
254 Chris Leonard for various fixes and enhancements to localedata.
255
256 @item
257 Ilya Leoshkevich for various fixes.
258
259 @item
260 Dmitry V. Levin for various fixes.
261
262 @item
263 Stefan Liebler for various fixes.
264
265 @item
266 Hongjiu Lu for providing the support for a Linux 32-bit runtime
267 environment under x86-64 (x32), for porting to Linux on IA64, for
268 improved string functions, a framework for testing IFUNC
269 implementations, for implementing Intel Control-Flow Enforcement
270 Technology, and many bug fixes.
271
272 @item
273 Rafa@l{} Lu@dotaccent{z}y@'nski
274 for contributing support for two grammatical forms of month
275 names, and for various fixes to locales.
276
277 @item
278 Luis Machado for optimized functions on PowerPC.
279
280 @item
281 David J. MacKenzie for his contribution to the @code{getopt}
282 function and writing the @file{tar.h} header.
283
284 @item
285 Greg McGary for adding runtime support for bounds checking.
286
287 @item
288 Roland McGrath for writing most of @theglibc{} originally, for his
289 work on the Hurd port, his direction as part of @theglibc{} steering
290 committee and as FSF Project Steward for @theglibc{}, and for many bug
291 fixes and reviewing of contributions.
292
293 @item
294 Allan McRae for various fixes.
295
296 @item
297 Jason Merrill for the port to the Sequent Symmetry running Dynix
298 version 3 (@code{i386-sequent-bsd}).
299
300 @item
301 Chris Metcalf for the port to Linux/Tile
302 (@code{tilegx-@var{anything}-linux} and
303 @code{tilepro-@var{anything}-linux}) and support for the generic Linux
304 kernel syscall interface used by several newer ports.
305
306 @item
307 Jim Meyering for various fixes.
308
309 @item
310 David Miller for contributing the port to Linux/Sparc
311 (@code{sparc*-@var{anything}-linux}).
312
313 @item
314 Alan Modra for his improvements for Linux on PowerPC.
315
316 @item
317 David Mosberger-Tang for contributing the port to Linux/Alpha
318 (@code{alpha-@var{anything}-linux}).
319
320 @item
321 Wainer dos Santos Moschetta for various fixes to powerpc.
322
323 @item
324 Stephen Moshier for implementing some 128-bit long double format math
325 functions.
326
327 @item
328 Stephen Munroe for his port to Linux on PowerPC64
329 (@code{powerpc64-@var{anything}-linux}) and for adding optimized
330 implementations for PowerPC.
331
332 @item
333 Paul E. Murphy for various fixes on PowerPC and for implementing the IEEE
334 128-bit floating point type for PowerPC.
335
336 @item
337 Joseph S. Myers for numerous bug fixes for the libm functions, for
338 his maintainership of the ARM and MIPS architectures and the math
339 component, improving cross-compilation and cross-testing of
340 @theglibc{}, expanded coverage of conformtest, merging the ports/
341 subdirectory into the @glibcadj{} main repository and his direction as
342 FSF Project Steward for @theglibc{}.
343
344 @item
345 Marko Myllynen for various fixes.
346
347 @item
348 Szabolcs Nagy for various fixes.
349
350 @item
351 Will Newton for contributing some optimized string functions and pointer
352 encryption support for ARM and various fixes.
353
354 @item
355 Carlos O'Donell for his maintainership of the HPPA architecture, for
356 maintaining @theglibc{} web pages and wiki, for his direction as FSF
357 Project Steward for @theglibc{} and various bug fixes.
358
359 @item
360 Alexandre Oliva for adding TLS descriptors for LD and GD on x86 and
361 x86-64, for the am33 port, for completing the MIPS n64/n32/o32 multilib
362 port, for thread-safety, async-signal safety and async-cancellation
363 safety documentation in the manual, for his direction as FSF Project
364 Maintainer and for various fixes.
365
366 @item
367 Paul Pluzhnikov for various fixes.
368
369 @item
370 Marek Polacek for various fixes.
371
372 @item
373 Siddhesh Poyarekar for various fixes, an implementation of a framework for
374 performance benchmarking of functions and implementing the tunables
375 infrastructure.
376
377 @item
378 Tom Quinn for contributing the startup code to support SunOS shared
379 libraries and the port to SGI machines running Irix 4
380 (@code{mips-sgi-irix4}).
381
382 @item
383 Torvald Riegel for the implementation of new algorithms for semaphores,
384 pthread_rwlock and condition variables.
385
386 @item
387 Maciej W. Rozycki for MIPS fixes, support for ABSOLUTE symbols,
388 and various fixes.
389
390 @item
391 Leonardo Sandoval for various fixes.
392
393 @item
394 Pravin Satpute for writing sorting rules for some Indian languages.
395
396 @item
397 Douglas C. Schmidt for writing the quick sort function used as a
398 fallback by @code{qsort}.
399
400 @item
401 Will Schmidt for optimized string functions on PowerPC.
402
403 @item
404 Andreas Schwab for the port to Linux/m68k
405 (@code{m68k-@var{anything}-linux}), for his direction as part of
406 @theglibc{} steering committee, and for various bug fixes.
407
408 @item
409 Martin Schwidefsky for porting to Linux on s390
410 (@code{s390-@var{anything}-linux}) and s390x
411 (@code{s390x-@var{anything}-linux}).
412
413 @item
414 Thomas Schwinge for his contribution to Hurd and the SH architecture.
415
416 @item
417 Martin Sebor for various fixes.
418
419 @item
420 Andrew Senkevich for contributing vector math function implementations for x86.
421
422 @item
423 Carlos Eduardo Seo for optimized functions on PowerPC.
424
425 @item
426 Arjun Shankar for testing and bug fixing.
427
428 @item
429 Marcus Shawcroft for contributing the AArch64 port.
430
431 @item
432 Franz Sirl for various fixes.
433
434 @item
435 Jes Sorensen for porting to Linux on IA64 (@code{ia64-@var{anything}-linux}).
436
437 @item
438 Rajalakshmi Srinivasaraghavan for various fixes and optimizations on PowerPC
439 and for implementing the IEEE 128-bit floating point type for PowerPC.
440
441 @item
442 Richard Stallman for his contribution to the @code{getopt} function.
443
444 @item
445 Alfred M. Szmidt for various fixes.
446
447 @item
448 Chung-Lin Tang for contributing the Nios II port.
449
450 @item
451 Ian Lance Taylor for contributing the port to the MIPS DECStation
452 running Ultrix 4 (@code{mips-dec-ultrix4}).
453
454 @item
455 Samuel Thibault for improving the Hurd port.
456
457 @item
458 Pino Toscano for various fixes.
459
460 @item
461 Matt Turner for various fixes to the Alpha port.
462
463 @item
464 Tim Waugh for the implementation of the POSIX.2 @code{wordexp}
465 function family.
466
467 @item
468 Ulrich Weigand for various fixes to the PowerPC64 and Arm ports.
469
470 @item
471 Florian Weimer for his maintainership of the network component, for handling
472 of security issues, and for various fixes.
473
474 @item
475 Zack Weinberg for the @code{explicit_bzero} implementation and for various
476 fixes.
477
478 @item
479 Mark Wielaard for various fixes.
480
481 @item
482 Eric Youngdale for implementing versioning of objects on the symbol level.
483
484 @item
485 Adhemerval Zanella for optimized functions on PowerPC, ISO C threads support
486 and various fixes.
487
488 @end itemize
489
490 Some code in @theglibc{} comes from other projects and might be under
491 a different license:
492
493 @itemize @bullet
494 @item
495 The timezone support code is derived from the public-domain timezone
496 package by Arthur David Olson and his many contributors.
497
498 @item
499 Some of the support code for Mach is taken from Mach 3.0 by CMU;
500 the file @file{if_ppp.h} is also copyright by CMU, but under a different license;
501 see the file @file{LICENSES} for the text of the licenses.
502
503 @item
504 The random number generation functions @code{random}, @code{srandom},
505 @code{setstate} and @code{initstate}, which are also the basis for the
506 @code{rand} and @code{srand} functions, were written by Earl T. Cohen
507 for the University of California at Berkeley and are copyrighted by the
508 Regents of the University of California. They have undergone minor
509 changes to fit into @theglibc{} and to fit the @w{ISO C} standard,
510 but the functional code is Berkeley's.@refill
511
512 @item
513 The Internet-related code (most of the @file{inet} subdirectory) and
514 several other miscellaneous functions and header files have been
515 included from 4.4 BSD with little or no modification. The copying
516 permission notice for this code can be found in the file @file{LICENSES}
517 in the source distribution.
518
519 @item
520 The @code{getaddrinfo} and @code{getnameinfo} functions and supporting
521 code were written by Craig Metz; see the file @file{LICENSES} for
522 details on their licensing.
523
524 @item
525 The DNS resolver code is taken directly from BIND 8.2.3-T5B, which
526 includes copyrighted code from UC Berkeley and from Digital Equipment
527 Corporation. See the file @file{LICENSES} for the text of the DEC license.
528
529 @item
530 The code to support Sun RPC is taken verbatim from Sun's
531 @w{@sc{rpcsrc-4.0}} distribution; see the file @file{LICENSES} for the
532 text of the license.
533
534 @item
535 The math functions are taken from @code{fdlibm-5.1} by Sun
536 Microsystems, as modified by J.T. Conklin, Ian Lance Taylor,
537 Ulrich Drepper, Andreas Schwab, and Roland McGrath.
538
539 @item
540 Many of the IEEE 64-bit double precision math functions
541 (in the @file{sysdeps/ieee754/dbl-64} subdirectory) come
542 from the IBM Accurate Mathematical Library, contributed by IBM.
543
544 @item
545 Many of the IA64 math functions are taken from a collection of
546 ``Highly Optimized Mathematical Functions for Itanium'' that Intel
547 makes available under a free license; see the file @file{LICENSES} for
548 details.
549
550 @end itemize