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 Yinyu Cai for their maintainership of the LoongArch port.
79 Rogerio Alves Cardoso for various fixes to PowerPC.
82 Paul Clarke for optimized functions on PowerPC.
85 Mike Crowe for various fixes.
88 Palmer Dabbelt for contributing the port to Linux/RISC-V.
91 DJ Delorie for maintenance of Linux/RISC-V, and various fixes.
94 Wilco Dijkstra for various fixes.
97 Liubov Dmitrieva for optimized string and math functions on x86-64 and
101 Ulrich Drepper for his many contributions in almost all parts of
102 @theglibc{}, including:
104 @item writing most of the POSIX Threads Library originally.
105 @item internationalization support, including the @code{locale} and
106 @code{localedef} utilities.
107 @item Linux i386/ELF support
108 @item the @code{hsearch} and @code{drand48} families of functions,
109 reentrant @samp{@dots{}@code{_r}} versions of the @code{random}
110 family; System V shared memory and IPC support code
111 @item several highly-optimized string functions for i@var{x}86
113 @item many math functions
114 @item the character conversion functions (@code{iconv})
115 @item the @code{ftw} and @code{nftw} functions
116 @item the floating-point printing function used by @code{printf} and friends
117 and the floating-point reading function used by @code{scanf},
118 @code{strtod} and friends
119 @item the @code{catgets} support and the entire suite of multi-byte
120 and wide-character support functions (@file{wctype.h}, @file{wchar.h}, etc.).
121 @item versioning of objects on the symbol level
125 Richard Earnshaw for continued support and fixes to the various ARM
129 Paul Eggert for the @code{mktime} function and for his direction as
130 part of @theglibc{} steering committee.
133 Steve Ellcey for various fixes.
136 Mike FABIAN for automating Unicode updates, for updating the locale data
137 for ISO 14651, for updating the library Unicode support, and for various
138 locale updates and fixes.
141 Tulio Magno Quites Machado Filho for adding a new class of installed
142 headers for low-level platform-specific functionality, including the
143 low-level platform-specific headers for PowerPC, for their maintainership
144 of the PowerPC port and various fixes.
147 Olaf Flebbe and Ralf B@"achle for contributing
148 @file{sysdeps/mips/fpu_control.h}.
151 Alistair Francis for Y2038 related fixes.
154 Mike Frysinger for his maintaining of the IA64 architecture and for
155 testing and bug fixing.
158 Martin Galvan for contributing gdb pretty printer support to glibc and adding
159 an initial set of pretty printers for structures in the POSIX Threads library.
162 Michael Glad for the passphrase-hashing function @code{crypt} and related
166 Wolfram Gloger for contributing the memory allocation functions
167 functions @code{malloc}, @code{realloc} and @code{free} and related
171 Gabriel F. T. Gomes for his improvements for Linux on PowerPC and for
172 implementing the IEEE 128-bit floating point type for PowerPC.
175 Torbj@"orn Granlund for fast implementations of many of the string
176 functions (@code{memcpy}, @code{strlen}, etc.).
179 Vineet Gupta for their maintainership of the ARC port.
182 Michael J. Haertel for writing the merge sort function @code{qsort}
183 and malloc checking functions like @code{mcheck}.
186 Bruno Haible for his improvements to the @code{iconv} and locale
190 Mao Han for the C-SKY port.
193 Richard Henderson for the port to Linux on Alpha
194 (@code{alpha-@var{anything}-linux}) and software floating-point support.
197 David Holsgrove for the port to Linux on MicroBlaze.
200 Leonhard Holz for various fixes.
203 Daniel Jacobowitz for various fixes and enhancements.
206 Andreas Jaeger for the port to Linux on x86-64
207 (@code{x86_64-@var{anything}-linux} and his work on Linux for MIPS
208 (@code{mips-@var{anything}-linux}), implementing the @file{ldconfig}
209 program, providing a test suite for the math library and for his
210 direction as part of @theglibc{} steering committee.
213 Aurelien Jarno for various fixes.
216 Rical Jasan for contributing various fixes in @theglibc{} manual.
219 Jakub Jelinek for implementing a number of checking functions,
220 software floating-point support and for
221 his direction as part of @theglibc{} steering committee.
224 Simon Josefsson for the @code{libidn} add-on.
227 Geoffrey Keating for the port to Linux on PowerPC
228 (@code{powerpc-@var{anything}-linux}).
231 Brendan Kehoe for contributing the port to the MIPS DECStation running
232 Ultrix 4 (@code{mips-dec-ultrix4}) and the port to the DEC Alpha
233 running OSF/1 (@code{alpha-dec-osf1}).
236 Mark Kettenis for implementing the @code{utmpx} interface and a utmp
237 daemon, and for a Hesiod NSS module.
240 Andi Kleen for implementing pthreads lock elision with TSX.
243 Kazumoto Kojima for the port of the Mach and Hurd code to the MIPS
244 architecture (@code{mips-@var{anything}-gnu}) and for his work on the
248 Maxim Kuvyrkov for various fixes.
251 Andreas Krebbel for his work on Linux for s390 and s390x.
254 Thorsten Kukuk for providing an implementation for NIS (YP) and NIS+,
255 securelevel 0, 1 and 2 and for the implementation for a caching daemon
256 for NSS (@file{nscd}).
259 Akhilesh Kumar for various fixes to locales.
262 Jeff Law for various fixes.
265 Doug Lea for contributing the memory allocation functions
266 @code{malloc}, @code{realloc} and @code{free} and related
270 Chris Leonard for various fixes and enhancements to localedata.
273 Ilya Leoshkevich for various fixes.
276 Dmitry V. Levin for various fixes.
279 Stefan Liebler for various fixes.
282 Hongjiu Lu for providing the support for a Linux 32-bit runtime
283 environment under x86-64 (x32), for porting to Linux on IA64, for
284 improved string functions, a framework for testing IFUNC
285 implementations, for implementing Intel Control-Flow Enforcement
286 Technology, and many bug fixes.
289 Rafa@l{} Lu@dotaccent{z}y@'nski
290 for contributing support for two grammatical forms of month
291 names, and for various fixes to locales.
294 Luis Machado for optimized functions on PowerPC.
297 David J. MacKenzie for his contribution to the @code{getopt}
298 function and writing the @file{tar.h} header.
301 Lukasz Majewski for Y2038 related fixes.
304 Greg McGary for adding runtime support for bounds checking.
307 Roland McGrath for writing most of @theglibc{} originally, for his
308 work on the Hurd port, his direction as part of @theglibc{} steering
309 committee and as FSF Project Steward for @theglibc{}, and for many bug
310 fixes and reviewing of contributions.
313 Allan McRae for various fixes.
316 Jason Merrill for the port to the Sequent Symmetry running Dynix
317 version 3 (@code{i386-sequent-bsd}).
320 Chris Metcalf for the port to Linux/Tile
321 (@code{tilegx-@var{anything}-linux} and
322 @code{tilepro-@var{anything}-linux}) and support for the generic Linux
323 kernel syscall interface used by several newer ports.
326 Jim Meyering for various fixes.
329 David Miller for contributing the port to Linux/Sparc
330 (@code{sparc*-@var{anything}-linux}).
333 Alan Modra for his improvements for Linux on PowerPC.
336 David Mosberger-Tang for contributing the port to Linux/Alpha
337 (@code{alpha-@var{anything}-linux}).
340 Wainer dos Santos Moschetta for various fixes to powerpc.
343 Stephen Moshier for implementing some 128-bit long double format math
347 Stephen Munroe for his port to Linux on PowerPC64
348 (@code{powerpc64-@var{anything}-linux}) and for adding optimized
349 implementations for PowerPC.
352 Paul E. Murphy for various fixes on PowerPC and for implementing the IEEE
353 128-bit floating point type for PowerPC.
356 Joseph S. Myers for numerous bug fixes for the libm functions, for
357 his maintainership of the ARM and MIPS architectures and the math
358 component, improving cross-compilation and cross-testing of
359 @theglibc{}, expanded coverage of conformtest, merging the ports/
360 subdirectory into the @glibcadj{} main repository and his direction as
361 FSF Project Steward for @theglibc{}.
364 Marko Myllynen for various fixes.
367 Szabolcs Nagy for various fixes.
370 Will Newton for contributing some optimized string functions and pointer
371 encryption support for ARM and various fixes.
374 Carlos O'Donell for his maintainership of the HPPA architecture, for
375 maintaining @theglibc{} web pages and wiki, for his direction as FSF
376 Project Steward for @theglibc{} and various bug fixes.
379 Alexandre Oliva for adding TLS descriptors for LD and GD on x86 and
380 x86-64, for the am33 port, for completing the MIPS n64/n32/o32 multilib
381 port, for thread-safety, async-signal safety and async-cancellation
382 safety documentation in the manual, for his direction as FSF Project
383 Maintainer and for various fixes.
386 Paul Pluzhnikov for various fixes.
389 Marek Polacek for various fixes.
392 Siddhesh Poyarekar for various fixes, an implementation of a framework for
393 performance benchmarking of functions and implementing the tunables
397 Tom Quinn for contributing the startup code to support SunOS shared
398 libraries and the port to SGI machines running Irix 4
399 (@code{mips-sgi-irix4}).
402 Torvald Riegel for the implementation of new algorithms for semaphores,
403 pthread_rwlock and condition variables.
406 Maciej W. Rozycki for MIPS fixes, support for ABSOLUTE symbols,
410 Leonardo Sandoval for various fixes.
413 Pravin Satpute for writing sorting rules for some Indian languages.
416 Douglas C. Schmidt for writing the quick sort function used as a
417 fallback by @code{qsort}.
420 Will Schmidt for optimized string functions on PowerPC.
423 Andreas Schwab for the port to Linux/m68k
424 (@code{m68k-@var{anything}-linux}), for his direction as part of
425 @theglibc{} steering committee, and for various bug fixes.
428 Martin Schwidefsky for porting to Linux on s390
429 (@code{s390-@var{anything}-linux}) and s390x
430 (@code{s390x-@var{anything}-linux}).
433 Thomas Schwinge for his contribution to Hurd and the SH architecture.
436 Martin Sebor for various fixes.
439 Andrew Senkevich for contributing vector math function implementations for x86.
442 Carlos Eduardo Seo for optimized functions on PowerPC.
445 Arjun Shankar for testing and bug fixing.
448 Marcus Shawcroft for contributing the AArch64 port.
451 TAMUKI Shoichi for various fixes.
454 Franz Sirl for various fixes.
457 Jes Sorensen for porting to Linux on IA64 (@code{ia64-@var{anything}-linux}).
460 Rajalakshmi Srinivasaraghavan for various fixes and optimizations on PowerPC,
461 for implementing the IEEE 128-bit floating point type for PowerPC., and for
462 their maintainership of the PowerPC port.
465 Richard Stallman for his contribution to the @code{getopt} function.
468 Alfred M. Szmidt for various fixes.
471 Chung-Lin Tang for contributing the Nios II port.
474 Ian Lance Taylor for contributing the port to the MIPS DECStation
475 running Ultrix 4 (@code{mips-dec-ultrix4}).
478 Samuel Thibault for improving the Hurd port.
481 Pino Toscano for various fixes.
484 Matt Turner for various fixes to the Alpha port.
487 Tim Waugh for the implementation of the POSIX.2 @code{wordexp}
491 Ulrich Weigand for various fixes to the PowerPC64 and Arm ports.
494 Florian Weimer for his maintainership of the network component, for handling
495 of security issues, and for various fixes.
498 Zack Weinberg for the @code{explicit_bzero} implementation and for various
502 Mark Wielaard for various fixes.
505 Eric Youngdale for implementing versioning of objects on the symbol level.
508 Adhemerval Zanella for optimized functions on PowerPC, ISO C threads support
512 Xuelei Zhang for optimized functions on AArch64.
516 Some code in @theglibc{} comes from other projects and might be under
521 The timezone support code is derived from the public-domain timezone
522 package by Arthur David Olson and his many contributors.
525 Some of the support code for Mach is taken from Mach 3.0 by CMU;
526 the file @file{if_ppp.h} is also copyright by CMU, but under a different license;
527 see the file @file{LICENSES} for the text of the licenses.
530 The random number generation functions @code{random}, @code{srandom},
531 @code{setstate} and @code{initstate}, which are also the basis for the
532 @code{rand} and @code{srand} functions, were written by Earl T. Cohen
533 for the University of California at Berkeley and are copyrighted by the
534 Regents of the University of California. They have undergone minor
535 changes to fit into @theglibc{} and to fit the @w{ISO C} standard,
536 but the functional code is Berkeley's.
539 The Internet-related code (most of the @file{inet} subdirectory) and
540 several other miscellaneous functions and header files have been
541 included from 4.4 BSD with little or no modification. The copying
542 permission notice for this code can be found in the file @file{LICENSES}
543 in the source distribution.
546 The @code{getaddrinfo} and @code{getnameinfo} functions and supporting
547 code were written by Craig Metz; see the file @file{LICENSES} for
548 details on their licensing.
551 The DNS resolver code is taken directly from BIND 8.2.3-T5B, which
552 includes copyrighted code from UC Berkeley and from Digital Equipment
553 Corporation. See the file @file{LICENSES} for the text of the DEC license.
556 The code to support Sun RPC is taken verbatim from Sun's
557 @w{@sc{rpcsrc-4.0}} distribution; see the file @file{LICENSES} for the
561 The math functions are taken from @code{fdlibm-5.1} by Sun
562 Microsystems, as modified by J.T. Conklin, Ian Lance Taylor,
563 Ulrich Drepper, Andreas Schwab, and Roland McGrath.
566 Many of the IEEE 64-bit double precision math functions
567 (in the @file{sysdeps/ieee754/dbl-64} subdirectory) come
568 from the IBM Accurate Mathematical Library, contributed by IBM.
571 Many of the IA64 math functions are taken from a collection of
572 ``Highly Optimized Mathematical Functions for Itanium'' that Intel
573 makes available under a free license; see the file @file{LICENSES} for