1 @node Contributors, Free Manuals, Platform, Top
2 @c %MENU% Who wrote what parts of the GNU C Library
3 @appendix Contributors to @theglibc{}
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
15 Nick Alcock for contributing fixes to allow @theglibc{} to be built with the
16 stack smashing protector enabled.
19 John David Anglin for various fixes to the hppa port.
22 Albert ARIBAUD for Y2038 related fixes.
25 Ryan S. Arnold for his improvements for Linux on PowerPC and his direction
26 as FSF Project Steward for @theglibc{}.
29 Arsen Arsenovi@'c for various fixes.
32 Miles Bader for writing the @code{argp} argument-parsing package, and the
33 @code{argz}/@code{envz} interfaces.
36 Ralf B@"achle for contributing @file{fpu_control.h},
37 @file{regdef.h}, @file{sgidefs.h}, @file{sys/asm.h}, and @file{sys/regdef.h}
38 under the @file{sysdeps/mips} directory.
41 Jeff Bailey for his maintainership of the HPPA architecture.
44 Petr Baudis for bug fixes and testing.
47 Fr@'ed@'eric B@'erat for numerous fixes and contributions.
50 Indu Bhagat for various fixes.
53 Anton Blanchard for various fixes.
56 Stephen R. van den Berg for contributing a highly-optimized
57 @code{strstr} function.
60 Ond@v{r}ej B@'ilka for contributing optimized string routines for x64 and various
64 Eric Blake for adding O(n) implementations of @code{memmem},
65 @code{strstr} and @code{strcasestr}.
68 Philip Blundell for the ports to Linux/ARM
69 (@code{arm-@var{ANYTHING}-linuxaout}) and ARM standalone
70 (@code{arm-@var{ANYTHING}-none}), as well as for parts of the IPv6
74 Mahesh Bodapati for various fixes.
77 Per Bothner for the implementation of the @code{libio} library which
78 is used to implement @code{stdio} functions.
81 Dridi Boukelmoune for various fixes.
84 Mark Brown for his direction as part of @theglibc{} steering
88 Sergey Bugaev for numerous contributions to Hurd.
91 Thomas Bushnell for his contributions to Hurd.
94 Yinyu Cai for their maintainership of the LoongArch port.
97 Rogerio Alves Cardoso for various fixes to PowerPC.
100 Kito Cheng for various fixes.
103 Paul Clarke for optimized functions on PowerPC.
106 Alejandro Colomar for various fixes.
109 Martin Coufal for various fixes.
112 Mike Crowe for various fixes.
115 Flavio Cruz for contributions to Hurd.
118 Palmer Dabbelt for contributing the port to Linux/RISC-V.
121 DJ Delorie for maintenance of Linux/RISC-V, and various fixes.
124 Wilco Dijkstra for various fixes.
127 Liubov Dmitrieva for optimized string and math functions on x86-64 and
131 Michael Hudson Doyle for various fixes.
134 Ulrich Drepper for his many contributions in almost all parts of
135 @theglibc{}, including:
137 @item writing most of the POSIX Threads Library originally.
138 @item internationalization support, including the @code{locale} and
139 @code{localedef} utilities.
140 @item Linux i386/ELF support
141 @item the @code{hsearch} and @code{drand48} families of functions,
142 reentrant @samp{@dots{}@code{_r}} versions of the @code{random}
143 family; System V shared memory and IPC support code
144 @item several highly-optimized string functions for i@var{x}86
146 @item many math functions
147 @item the character conversion functions (@code{iconv})
148 @item the @code{ftw} and @code{nftw} functions
149 @item the floating-point printing function used by @code{printf} and friends
150 and the floating-point reading function used by @code{scanf},
151 @code{strtod} and friends
152 @item the @code{catgets} support and the entire suite of multi-byte
153 and wide-character support functions (@file{wctype.h}, @file{wchar.h}, etc.).
154 @item versioning of objects on the symbol level
158 Richard Earnshaw for continued support and fixes to the various ARM
162 Paul Eggert for the @code{mktime} function, for his direction as
163 part of @theglibc{} steering committee, and numerous fixes.
166 Roy Eldar for various fixes.
169 Steve Ellcey for various fixes.
172 Mike FABIAN for automating Unicode updates, for updating the locale data
173 for ISO 14651, for updating the library Unicode support, and for various
174 locale updates and fixes.
177 Tulio Magno Quites Machado Filho for adding a new class of installed
178 headers for low-level platform-specific functionality, including the
179 low-level platform-specific headers for PowerPC, for their maintainership
180 of the PowerPC port and various fixes.
183 Olaf Flebbe and Ralf B@"achle for contributing
184 @file{sysdeps/mips/fpu_control.h}.
187 Alistair Francis for Y2038 related fixes.
190 Mike Frysinger for his maintaining of the IA64 architecture and for
191 testing and bug fixing.
194 Martin Galvan for contributing gdb pretty printer support to glibc and adding
195 an initial set of pretty printers for structures in the POSIX Threads library.
198 Romain Geissler for various fixes.
201 Michael Glad for the passphrase-hashing function @code{crypt} and related
205 Wolfram Gloger for contributing the memory allocation functions
206 functions @code{malloc}, @code{realloc} and @code{free} and related
210 Noah Goldstein for contributing extensive x86 / x86-64 optimizations.
213 Gabriel F. T. Gomes for his improvements for Linux on PowerPC and for
214 implementing the IEEE 128-bit floating point type for PowerPC.
217 Torbj@"orn Granlund for fast implementations of many of the string
218 functions (@code{memcpy}, @code{strlen}, etc.).
221 Vineet Gupta for their maintainership of the ARC port.
224 Michael J. Haertel for writing the merge sort function @code{qsort}
225 and malloc checking functions like @code{mcheck}.
228 Bruno Haible for his improvements to the @code{iconv} and locale
232 Mao Han for the C-SKY port.
235 Richard Henderson for the port to Linux on Alpha
236 (@code{alpha-@var{anything}-linux}) and software floating-point support.
239 David Holsgrove for the port to Linux on MicroBlaze.
242 Leonhard Holz for various fixes.
245 Stafford Horne for maintainership of the OpenRISC port.
248 Guy-Fleury Iteriteka for contributions to Hurd support.
251 Daniel Jacobowitz for various fixes and enhancements.
254 Andreas Jaeger for the port to Linux on x86-64
255 (@code{x86_64-@var{anything}-linux} and his work on Linux for MIPS
256 (@code{mips-@var{anything}-linux}), implementing the @file{ldconfig}
257 program, providing a test suite for the math library and for his
258 direction as part of @theglibc{} steering committee.
261 Sam James for various fixes.
264 Aurelien Jarno for various fixes.
267 Rical Jasan for contributing various fixes in @theglibc{} manual.
270 Jakub Jelinek for implementing a number of checking functions,
271 software floating-point support and for
272 his direction as part of @theglibc{} steering committee.
275 Simon Josefsson for the @code{libidn} add-on.
278 Geoffrey Keating for the port to Linux on PowerPC
279 (@code{powerpc-@var{anything}-linux}).
282 Brendan Kehoe for contributing the port to the MIPS DECStation running
283 Ultrix 4 (@code{mips-dec-ultrix4}) and the port to the DEC Alpha
284 running OSF/1 (@code{alpha-dec-osf1}).
287 Mark Kettenis for implementing the @code{utmpx} interface and a utmp
288 daemon, and for a Hesiod NSS module.
291 Simon Kissane for gmon improvements.
294 Andi Kleen for implementing pthreads lock elision with TSX.
297 Kazumoto Kojima for the port of the Mach and Hurd code to the MIPS
298 architecture (@code{mips-@var{anything}-gnu}) and for his work on the
302 Pavel Kozlov for maintainership of the ARC port.
305 Maxim Kuvyrkov for various fixes.
308 Andreas Krebbel for his work on Linux for s390 and s390x.
311 Thorsten Kukuk for providing an implementation for NIS (YP) and NIS+,
312 securelevel 0, 1 and 2 and for the implementation for a caching daemon
313 for NSS (@file{nscd}).
316 Akhilesh Kumar for various fixes to locales.
319 Jeff Law for various fixes.
322 Doug Lea for contributing the memory allocation functions
323 @code{malloc}, @code{realloc} and @code{free} and related
327 Chris Leonard for various fixes and enhancements to localedata.
330 Ilya Leoshkevich for various fixes.
333 Dmitry V. Levin for various fixes.
336 Stefan Liebler for numerous fixes and the work on the S390 port.
339 Hongjiu Lu for providing the support for a Linux 32-bit runtime
340 environment under x86-64 (x32), for porting to Linux on IA64, for
341 improved string functions, a framework for testing IFUNC
342 implementations, for implementing Intel Control-Flow Enforcement
343 Technology, and many bug fixes.
346 Rafa@l{} Lu@dotaccent{z}y@'nski
347 for contributing support for two grammatical forms of month
348 names, and for various fixes to locales.
351 Maxim Kuvyrkov for various fixes.
354 Luis Machado for optimized functions on PowerPC.
357 David J. MacKenzie for his contribution to the @code{getopt}
358 function and writing the @file{tar.h} header.
361 Lukasz Majewski for Y2038 related fixes.
364 Greg McGary for adding runtime support for bounds checking.
367 Roland McGrath for writing most of @theglibc{} originally, for his
368 work on the Hurd port, his direction as part of @theglibc{} steering
369 committee and as FSF Project Steward for @theglibc{}, and for many bug
370 fixes and reviewing of contributions.
373 Allan McRae for various fixes.
376 Jason Merrill for the port to the Sequent Symmetry running Dynix
377 version 3 (@code{i386-sequent-bsd}).
380 Chris Metcalf for the port to Linux/Tile
381 (@code{tilegx-@var{anything}-linux} and
382 @code{tilepro-@var{anything}-linux}) and support for the generic Linux
383 kernel syscall interface used by several newer ports.
386 Jim Meyering for various fixes.
389 David Miller for contributing the port to Linux/Sparc
390 (@code{sparc*-@var{anything}-linux}).
393 Cupertino Miranda for various fixes.
396 Alan Modra for his improvements for Linux on PowerPC.
399 Sachin Monga for various fixes.
402 David Mosberger-Tang for contributing the port to Linux/Alpha
403 (@code{alpha-@var{anything}-linux}).
406 Wainer dos Santos Moschetta for various fixes to powerpc.
409 Stephen Moshier for implementing some 128-bit long double format math
413 Stephen Munroe for his port to Linux on PowerPC64
414 (@code{powerpc64-@var{anything}-linux}) and for adding optimized
415 implementations for PowerPC.
418 Paul E. Murphy for various fixes on PowerPC and for implementing the IEEE
419 128-bit floating point type for PowerPC.
422 Joseph S. Myers for numerous bug fixes for the libm functions, for
423 his maintainership of the ARM and MIPS architectures and the math
424 component, improving cross-compilation and cross-testing of
425 @theglibc{}, expanded coverage of conformtest, merging the ports/
426 subdirectory into the @glibcadj{} main repository and his direction as
427 FSF Project Steward for @theglibc{}.
430 Marko Myllynen for various fixes.
433 Szabolcs Nagy for various fixes and contributions to AArch64.
436 Nab for various fixes.
439 Will Newton for contributing some optimized string functions and pointer
440 encryption support for ARM and various fixes.
443 Carlos O'Donell for his maintainership of the HPPA architecture, for
444 maintaining @theglibc{} web pages and wiki, for his direction as FSF
445 Project Steward for @theglibc{} and various bug fixes.
448 Alexandre Oliva for adding TLS descriptors for LD and GD on x86 and
449 x86-64, for the am33 port, for completing the MIPS n64/n32/o32 multilib
450 port, for thread-safety, async-signal safety and async-cancellation
451 safety documentation in the manual, for his direction as FSF Project
452 Maintainer and for various fixes.
455 Ronan Pigott for various fixes.
458 Paul Pluzhnikov for various fixes.
461 Marek Polacek for various fixes.
464 Siddhesh Poyarekar for various fixes, an implementation of a framework for
465 performance benchmarking of functions and implementing the tunables
469 Tom Quinn for contributing the startup code to support SunOS shared
470 libraries and the port to SGI machines running Irix 4
471 (@code{mips-sgi-irix4}).
474 Joe Ramsay for contributing to the AArch64 port.
477 Torvald Riegel for the implementation of new algorithms for semaphores,
478 pthread_rwlock and condition variables.
481 Maciej W. Rozycki for MIPS fixes, support for ABSOLUTE symbols,
485 Leonardo Sandoval for various fixes.
488 Pravin Satpute for writing sorting rules for some Indian languages.
491 Douglas C. Schmidt for writing the quick sort function used as a
492 fallback by @code{qsort}.
495 Will Schmidt for optimized string functions on PowerPC.
498 Andreas Schwab for the port to Linux/m68k
499 (@code{m68k-@var{anything}-linux}), for his direction as part of
500 @theglibc{} steering committee, and for various bug fixes.
503 Martin Schwidefsky for porting to Linux on s390
504 (@code{s390-@var{anything}-linux}) and s390x
505 (@code{s390x-@var{anything}-linux}).
508 Thomas Schwinge for his contribution to Hurd and the SH architecture.
511 Martin Sebor for various fixes.
514 Andrew Senkevich for contributing vector math function implementations for x86.
517 Carlos Eduardo Seo for optimized functions on PowerPC.
520 Arjun Shankar for testing and bug fixing.
523 Marcus Shawcroft for contributing the AArch64 port.
526 TAMUKI Shoichi for various fixes.
529 Joe Simmons-Talbott for various fixes.
532 Franz Sirl for various fixes.
535 Gavin Smith for various fixes.
538 Jes Sorensen for porting to Linux on IA64 (@code{ia64-@var{anything}-linux}).
541 Julian Squires for various fixes.
544 Rajalakshmi Srinivasaraghavan for various fixes and optimizations on PowerPC,
545 for implementing the IEEE 128-bit floating point type for PowerPC., and for
546 their maintainership of the PowerPC port.
549 Richard Stallman for his contribution to the @code{getopt} function.
552 Alfred M. Szmidt for various fixes.
555 Chung-Lin Tang for contributing the Nios II port.
558 Ian Lance Taylor for contributing the port to the MIPS DECStation
559 running Ultrix 4 (@code{mips-dec-ultrix4}).
562 Samuel Thibault for numerous improvements to the Hurd port.
565 Pino Toscano for various fixes.
568 Matt Turner for various fixes to the Alpha port.
571 Hsiangkai Wang for various fixes.
574 Tim Waugh for the implementation of the POSIX.2 @code{wordexp}
578 Ulrich Weigand for various fixes to the PowerPC64 and Arm ports.
581 Florian Weimer for his maintainership of the network component, for handling
582 of security issues, and for numerous fixes and contributions.
585 Zack Weinberg for the @code{explicit_bzero} implementation and for various
589 Mark Wielaard for various fixes.
592 Xi Ruoyao for various fixes.
595 Qixing ksyx Xue for various fixes.
598 Adam Yi for various fixes.
601 Eric Youngdale for implementing versioning of objects on the symbol level.
604 Adhemerval Zanella for optimized functions on PowerPC, ISO C threads support
605 and numerous contributions and fixes.
608 Xuelei Zhang for optimized functions on AArch64.
612 Some code in @theglibc{} comes from other projects and might be under
617 The timezone support code is derived from the public-domain timezone
618 package by Arthur David Olson and his many contributors.
621 Some of the support code for Mach is taken from Mach 3.0 by CMU;
622 the file @file{if_ppp.h} is also copyright by CMU, but under a different license;
623 see the file @file{LICENSES} for the text of the licenses.
626 The random number generation functions @code{random}, @code{srandom},
627 @code{setstate} and @code{initstate}, which are also the basis for the
628 @code{rand} and @code{srand} functions, were written by Earl T. Cohen
629 for the University of California at Berkeley and are copyrighted by the
630 Regents of the University of California. They have undergone minor
631 changes to fit into @theglibc{} and to fit the @w{ISO C} standard,
632 but the functional code is Berkeley's.
635 The Internet-related code (most of the @file{inet} subdirectory) and
636 several other miscellaneous functions and header files have been
637 included from 4.4 BSD with little or no modification. The copying
638 permission notice for this code can be found in the file @file{LICENSES}
639 in the source distribution.
642 The @code{getaddrinfo} and @code{getnameinfo} functions and supporting
643 code were written by Craig Metz; see the file @file{LICENSES} for
644 details on their licensing.
647 The DNS resolver code is taken directly from BIND 8.2.3-T5B, which
648 includes copyrighted code from UC Berkeley and from Digital Equipment
649 Corporation. See the file @file{LICENSES} for the text of the DEC license.
652 The code to support Sun RPC is taken verbatim from Sun's
653 @w{@sc{rpcsrc-4.0}} distribution; see the file @file{LICENSES} for the
657 The math functions are taken from @code{fdlibm-5.1} by Sun
658 Microsystems, as modified by J.T. Conklin, Ian Lance Taylor,
659 Ulrich Drepper, Andreas Schwab, and Roland McGrath.
662 Many of the IEEE 64-bit double precision math functions
663 (in the @file{sysdeps/ieee754/dbl-64} subdirectory) come
664 from the IBM Accurate Mathematical Library, contributed by IBM.
667 Many of the IA64 math functions are taken from a collection of
668 ``Highly Optimized Mathematical Functions for Itanium'' that Intel
669 makes available under a free license; see the file @file{LICENSES} for