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 Miles Bader for writing the @code{argp} argument-parsing package, and the
30 @code{argz}/@code{envz} interfaces.
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.
38 Jeff Bailey for his maintainership of the HPPA architecture.
41 Petr Baudis for bug fixes and testing.
44 Anton Blanchard for various fixes.
47 Stephen R. van den Berg for contributing a highly-optimized
48 @code{strstr} function.
51 Ond@v{r}ej B@'ilka for contributing optimized string routines for x64 and various
55 Eric Blake for adding O(n) implementations of @code{memmem},
56 @code{strstr} and @code{strcasestr}.
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
65 Per Bothner for the implementation of the @code{libio} library which
66 is used to implement @code{stdio} functions.
69 Mark Brown for his direction as part of @theglibc{} steering
73 Thomas Bushnell for his contributions to Hurd.
76 Rogerio Alves Cardoso for various fixes to PowerPC.
79 Paul Clarke for optimized functions on PowerPC.
82 Palmer Dabbelt for contributing the port to Linux/RISC-V.
85 DJ Delorie for maintenance of Linux/RISC-V, and various fixes.
88 Wilco Dijkstra for various fixes.
91 Liubov Dmitrieva for optimized string and math functions on x86-64 and
95 Ulrich Drepper for his many contributions in almost all parts of
96 @theglibc{}, including:
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
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
119 Richard Earnshaw for continued support and fixes to the various ARM
123 Paul Eggert for the @code{mktime} function and for his direction as
124 part of @theglibc{} steering committee.
127 Steve Ellcey for various fixes.
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.
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.
140 Olaf Flebbe and Ralf B@"achle for contributing
141 @file{sysdeps/mips/fpu_control.h}.
144 Mike Frysinger for his maintaining of the IA64 architecture and for
145 testing and bug fixing.
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.
152 Michael Glad for the passphrase-hashing function @code{crypt} and related
156 Wolfram Gloger for contributing the memory allocation functions
157 functions @code{malloc}, @code{realloc} and @code{free} and related
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.
165 Torbj@"orn Granlund for fast implementations of many of the string
166 functions (@code{memcpy}, @code{strlen}, etc.).
169 Michael J. Haertel for writing the merge sort function @code{qsort}
170 and malloc checking functions like @code{mcheck}.
173 Bruno Haible for his improvements to the @code{iconv} and locale
177 Richard Henderson for the port to Linux on Alpha
178 (@code{alpha-@var{anything}-linux}) and software floating-point support.
181 David Holsgrove for the port to Linux on MicroBlaze.
184 Leonhard Holz for various fixes.
187 Daniel Jacobowitz for various fixes and enhancements.
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.
197 Aurelien Jarno for various fixes.
200 Rical Jasan for contributing various fixes in @theglibc{} manual.
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.
208 Simon Josefsson for the @code{libidn} add-on.
211 Geoffrey Keating for the port to Linux on PowerPC
212 (@code{powerpc-@var{anything}-linux}).
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}).
220 Mark Kettenis for implementing the @code{utmpx} interface and a utmp
221 daemon, and for a Hesiod NSS module.
224 Andi Kleen for implementing pthreads lock elision with TSX.
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
232 Maxim Kuvyrkov for various fixes.
235 Andreas Krebbel for his work on Linux for s390 and s390x.
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}).
243 Akhilesh Kumar for various fixes to locales.
246 Jeff Law for various fixes.
249 Doug Lea for contributing the memory allocation functions
250 @code{malloc}, @code{realloc} and @code{free} and related
254 Chris Leonard for various fixes and enhancements to localedata.
257 Ilya Leoshkevich for various fixes.
260 Dmitry V. Levin for various fixes.
263 Stefan Liebler for various fixes.
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.
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.
278 Luis Machado for optimized functions on PowerPC.
281 David J. MacKenzie for his contribution to the @code{getopt}
282 function and writing the @file{tar.h} header.
285 Greg McGary for adding runtime support for bounds checking.
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.
294 Allan McRae for various fixes.
297 Jason Merrill for the port to the Sequent Symmetry running Dynix
298 version 3 (@code{i386-sequent-bsd}).
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.
307 Jim Meyering for various fixes.
310 David Miller for contributing the port to Linux/Sparc
311 (@code{sparc*-@var{anything}-linux}).
314 Alan Modra for his improvements for Linux on PowerPC.
317 David Mosberger-Tang for contributing the port to Linux/Alpha
318 (@code{alpha-@var{anything}-linux}).
321 Wainer dos Santos Moschetta for various fixes to powerpc.
324 Stephen Moshier for implementing some 128-bit long double format math
328 Stephen Munroe for his port to Linux on PowerPC64
329 (@code{powerpc64-@var{anything}-linux}) and for adding optimized
330 implementations for PowerPC.
333 Paul E. Murphy for various fixes on PowerPC and for implementing the IEEE
334 128-bit floating point type for PowerPC.
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{}.
345 Marko Myllynen for various fixes.
348 Szabolcs Nagy for various fixes.
351 Will Newton for contributing some optimized string functions and pointer
352 encryption support for ARM and various fixes.
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.
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.
367 Paul Pluzhnikov for various fixes.
370 Marek Polacek for various fixes.
373 Siddhesh Poyarekar for various fixes, an implementation of a framework for
374 performance benchmarking of functions and implementing the tunables
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}).
383 Torvald Riegel for the implementation of new algorithms for semaphores,
384 pthread_rwlock and condition variables.
387 Maciej W. Rozycki for MIPS fixes, support for ABSOLUTE symbols,
391 Leonardo Sandoval for various fixes.
394 Pravin Satpute for writing sorting rules for some Indian languages.
397 Douglas C. Schmidt for writing the quick sort function used as a
398 fallback by @code{qsort}.
401 Will Schmidt for optimized string functions on PowerPC.
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.
409 Martin Schwidefsky for porting to Linux on s390
410 (@code{s390-@var{anything}-linux}) and s390x
411 (@code{s390x-@var{anything}-linux}).
414 Thomas Schwinge for his contribution to Hurd and the SH architecture.
417 Martin Sebor for various fixes.
420 Andrew Senkevich for contributing vector math function implementations for x86.
423 Carlos Eduardo Seo for optimized functions on PowerPC.
426 Arjun Shankar for testing and bug fixing.
429 Marcus Shawcroft for contributing the AArch64 port.
432 Franz Sirl for various fixes.
435 Jes Sorensen for porting to Linux on IA64 (@code{ia64-@var{anything}-linux}).
438 Rajalakshmi Srinivasaraghavan for various fixes and optimizations on PowerPC
439 and for implementing the IEEE 128-bit floating point type for PowerPC.
442 Richard Stallman for his contribution to the @code{getopt} function.
445 Alfred M. Szmidt for various fixes.
448 Chung-Lin Tang for contributing the Nios II port.
451 Ian Lance Taylor for contributing the port to the MIPS DECStation
452 running Ultrix 4 (@code{mips-dec-ultrix4}).
455 Samuel Thibault for improving the Hurd port.
458 Pino Toscano for various fixes.
461 Matt Turner for various fixes to the Alpha port.
464 Tim Waugh for the implementation of the POSIX.2 @code{wordexp}
468 Ulrich Weigand for various fixes to the PowerPC64 and Arm ports.
471 Florian Weimer for his maintainership of the network component, for handling
472 of security issues, and for various fixes.
475 Zack Weinberg for the @code{explicit_bzero} implementation and for various
479 Mark Wielaard for various fixes.
482 Eric Youngdale for implementing versioning of objects on the symbol level.
485 Adhemerval Zanella for optimized functions on PowerPC, ISO C threads support
490 Some code in @theglibc{} comes from other projects and might be under
495 The timezone support code is derived from the public-domain timezone
496 package by Arthur David Olson and his many contributors.
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.
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
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.
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.
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.
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
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.
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.
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