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d9dc34cd 1@node Contributors, Free Manuals, Platform, Top
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2@c %MENU% Who wrote what parts of the GNU C Library
3@appendix Contributors to @theglibc{}
3c20b9b6 4
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5@Theglibc{} project would like to thank its many contributors.
6Without them the project would not have been nearly as successful as
7it has been. Any omissions in this list are accidental. Feel free to
8file a bug in bugzilla if you have been left out or some of your
9contributions are not listed. Please keep this list in alphabetical
10order.
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11
12@itemize @bullet
d8e272ab 13
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14@item
15Nick Alcock for contributing fixes to allow @theglibc{} to be built with the
16stack smashing protector enabled.
17
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18@item
19John David Anglin for various fixes to the hppa port.
20
3c20b9b6 21@item
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22Ryan S. Arnold for his improvements for Linux on PowerPC and his direction
23as FSF Project Steward for @theglibc{}.
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24
25@item
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26Miles Bader for writing the @code{argp} argument-parsing package, and the
27@code{argz}/@code{envz} interfaces.
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28
29@item
d8e272ab 30Jeff Bailey for his maintainership of the HPPA architecture.
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31
32@item
d8e272ab 33Petr Baudis for bug fixes and testing.
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34
35@item
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36Stephen R. van den Berg for contributing a highly-optimized
37@code{strstr} function.
3c20b9b6 38
db24e684 39@item
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40Ondrej Bilka for contributing optimized string routines for x64 and various
41fixes.
db24e684 42
3c20b9b6 43@item
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44Eric Blake for adding O(n) implementations of @code{memmem},
45@code{strstr} and @code{strcasestr}.
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46
47@item
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48Philip Blundell for the ports to Linux/ARM
49(@code{arm-@var{ANYTHING}-linuxaout}) and ARM standalone
50(@code{arm-@var{ANYTHING}-none}), as well as for parts of the IPv6
51support code.
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52
53@item
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54Per Bothner for the implementation of the @code{libio} library which
55is used to implement @code{stdio} functions.
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56
57@item
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58Mark Brown for his direction as part of @theglibc{} steering
59committee.
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60
61@item
d8e272ab 62Thomas Bushnell for his contributions to Hurd.
3c20b9b6 63
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64@item
65Palmer Dabbelt for contributing the port to Linux/RISC-V.
66
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67@item
68DJ Delorie for various fixes.
69
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70@item
71Wilco Dijkstra for various fixes.
72
3c20b9b6 73@item
ef48b196 74Liubov Dmitrieva for optimized string and math functions on x86-64 and
06c5abbd 75x86.
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76
77@item
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78Ulrich Drepper for his many contributions in almost all parts of
79@theglibc{}, including:
80@itemize @bullet
136fa185 81@item writing most of the POSIX Threads Library originally.
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82@item internationalization support, including the @code{locale} and
83@code{localedef} utilities.
84@item Linux i386/ELF support
85@item the @code{hsearch} and @code{drand48} families of functions,
86reentrant @samp{@dots{}@code{_r}} versions of the @code{random}
87family; System V shared memory and IPC support code
88@item several highly-optimized string functions for i@var{x}86
89processors
90@item many math functions
91@item the character conversion functions (@code{iconv})
92@item the @code{ftw} and @code{nftw} functions
93@item the floating-point printing function used by @code{printf} and friends
94and the floating-point reading function used by @code{scanf},
95@code{strtod} and friends
96@item the @code{catgets} support and the entire suite of multi-byte
97and wide-character support functions (@file{wctype.h}, @file{wchar.h}, etc.).
98@item versioning of objects on the symbol level
99@end itemize
3c20b9b6 100
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101@item
102Wilco Dijkstra for various fixes.
103
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104@item
105Richard Earnshaw for continued support and fixes to the various ARM
106machine files.
107
3c20b9b6 108@item
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109Paul Eggert for the @code{mktime} function and for his direction as
110part of @theglibc{} steering committee.
3c20b9b6 111
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112@item
113Steve Ellcey for various fixes.
114
15192aaa 115@item
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116Mike FABIAN for various fixes to locales.
117
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118@item
119Tulio Magno Quites Machado Filho for adding a new class of installed
120headers for low-level platform-specific functionality and one such for
1900fab9 121PowerPC and various fixes.
06c5abbd 122
3c20b9b6 123@item
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124Mike Frysinger for his maintaining of the IA64 architecture and for
125testing and bug fixing.
3c20b9b6 126
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127@item
128Martin Galvan for contributing gdb pretty printer support to glibc and adding
129an initial set of pretty printers for structures in the POSIX Threads library.
130
3c20b9b6 131@item
841785ba 132Michael Glad for the passphrase-hashing function @code{crypt} and related
d8e272ab 133functions.
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134
135@item
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136Wolfram Gloger for contributing the memory allocation functions
137functions @code{malloc}, @code{realloc} and @code{free} and related
138code.
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139
140@item
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141Torbj@"orn Granlund for fast implementations of many of the string
142functions (@code{memcpy}, @code{strlen}, etc.).
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143
144@item
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145Michael J. Haertel for writing the merge sort function @code{qsort}
146and malloc checking functions like @code{mcheck}.
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147
148@item
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149Bruno Haible for his improvements to the @code{iconv} and locale
150implementations.
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151
152@item
d8e272ab 153Richard Henderson for the port to Linux on Alpha
c10c5267 154(@code{alpha-@var{anything}-linux}) and software floating-point support.
3c20b9b6 155
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156@item
157David Holsgrove for the port to Linux on MicroBlaze.
158
3c20b9b6 159@item
d8e272ab 160Daniel Jacobowitz for various fixes and enhancements.
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161
162@item
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163Andreas Jaeger for the port to Linux on x86-64
164(@code{x86_64-@var{anything}-linux} and his work on Linux for MIPS
165(@code{mips-@var{anything}-linux}), implementing the @file{ldconfig}
166program, providing a test suite for the math library and for his
167direction as part of @theglibc{} steering committee.
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168
169@item
d8e272ab 170Aurelien Jarno for various fixes.
3c20b9b6 171
1900fab9 172@item
ef8659ea 173Rical Jasan for contributing various fixes in @theglibc{} manual.
1900fab9 174
3c20b9b6 175@item
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176Jakub Jelinek for implementing a number of checking functions,
177software floating-point support and for
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178his direction as part of @theglibc{} steering committee.
179
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180@item
181Simon Josefsson for the @code{libidn} add-on.
182
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183@item
184Geoffrey Keating for the port to Linux on PowerPC
185(@code{powerpc-@var{anything}-linux}).
186
187@item
188Brendan Kehoe for contributing the port to the MIPS DECStation running
189Ultrix 4 (@code{mips-dec-ultrix4}) and the port to the DEC Alpha
190running OSF/1 (@code{alpha-dec-osf1}).
191
192@item
be208619 193Mark Kettenis for implementing the @code{utmpx} interface and a utmp
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194daemon, and for a Hesiod NSS module.
195
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196@item
197Andi Kleen for implementing pthreads lock elision with TSX.
198
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199@item
200Kazumoto Kojima for the port of the Mach and Hurd code to the MIPS
201architecture (@code{mips-@var{anything}-gnu}) and for his work on the
202SH architecture.
203
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204@item
205Maxim Kuvyrkov for various fixes.
206
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207@item
208Andreas Krebbel for his work on Linux for s390 and s390x.
209
210@item
211Thorsten Kukuk for providing an implementation for NIS (YP) and NIS+,
212securelevel 0, 1 and 2 and for the implementation for a caching daemon
213for NSS (@file{nscd}).
214
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215@item
216Akhilesh Kumar for various fixes to locales.
217
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218@item
219Jeff Law for various fixes.
220
221@item
222Doug Lea for contributing the memory allocation functions
be208619 223@code{malloc}, @code{realloc} and @code{free} and related
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224code.
225
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226@item
227Chris Leonard for various fixes and enhancements to localedata.
228
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229@item
230Stefan Liebler for various fixes.
231
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232@item
233Hongjiu Lu for providing the support for a Linux 32-bit runtime
234environment under x86-64 (x32), for porting to Linux on IA64, for
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235improved string functions, a framework for testing IFUNC
236implementations, and many bug fixes.
d8e272ab 237
15192aaa 238@item
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239Rafal Luzynski for contributing support for two grammatical forms of month
240names, and for various fixes to locales.
15192aaa 241
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242@item
243Luis Machado for optimized functions on PowerPC.
244
245@item
246David J. MacKenzie for his contribution to the @code{getopt}
247function and writing the @file{tar.h} header.
248
249@item
250Greg McGary for adding runtime support for bounds checking.
251
252@item
253Roland McGrath for writing most of @theglibc{} originally, for his
254work on the Hurd port, his direction as part of @theglibc{} steering
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255committee and as FSF Project Steward for @theglibc{}, and for many bug
256fixes and reviewing of contributions.
d8e272ab 257
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258@item
259Allan McRae for various fixes.
260
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261@item
262Jason Merrill for the port to the Sequent Symmetry running Dynix
263version 3 (@code{i386-sequent-bsd}).
264
265@item
266Chris Metcalf for the port to Linux/Tile
267(@code{tilegx-@var{anything}-linux} and
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268@code{tilepro-@var{anything}-linux}) and support for the generic Linux
269kernel syscall interface used by several newer ports.
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270
271@item
272David Miller for contributing the port to Linux/Sparc
273(@code{sparc*-@var{anything}-linux}).
274
275@item
276Alan Modra for his improvements for Linux on PowerPC.
277
278@item
279David Mosberger-Tang for contributing the port to Linux/Alpha
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280(@code{alpha-@var{anything}-linux}).
281
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282@item
283Wainer dos Santos Moschetta for various fixes to powerpc.
284
3c20b9b6 285@item
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286Stephen Moshier for implementing some 128-bit long double format math
287functions.
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288
289@item
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290Stephen Munroe for his port to Linux on PowerPC64
291(@code{powerpc64-@var{anything}-linux}) and for adding optimized
292implementations for PowerPC.
3c20b9b6 293
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294@item
295Paul E. Murphy for various fixes on PowerPC.
296
3c20b9b6 297@item
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298Joseph S. Myers for numerous bug fixes for the libm functions, for
299his maintainership of the ARM and MIPS architectures, improving
300cross-compilation and cross-testing of @theglibc{}, expanded
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301coverage of conformtest, merging the ports/ subdirectory
302into the @glibcadj{} main repository and his direction as FSF Project
303Steward for @theglibc{}.
3c20b9b6 304
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305@item
306Marko Myllynen for various fixes.
307
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308@item
309Szabolcs Nagy for various fixes.
310
db24e684 311@item
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312Will Newton for contributing some optimized string functions and pointer
313encryption support for ARM and various fixes.
db24e684 314
3c20b9b6 315@item
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316Carlos O'Donell for his maintainership of the HPPA architecture, for
317maintaining @theglibc{} web pages and wiki, for his direction as FSF
318Project Steward for @theglibc{} and various bug fixes.
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319
320@item
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321Alexandre Oliva for adding TLS descriptors for LD and GD on x86 and
322x86-64, for the am33 port, for completing the MIPS n64/n32/o32 multilib
68159946 323port, for thread-safety, async-signal safety and async-cancellation
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324safety documentation in the manual, for his direction as FSF Project
325Maintainer and for various fixes.
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326
327@item
d8e272ab 328Paul Pluzhnikov for various fixes.
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329
330@item
d8e272ab 331Marek Polacek for various fixes.
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332
333@item
1900fab9 334Siddhesh Poyarekar for various fixes, an implementation of a framework for
43ce02c6 335performance benchmarking of functions and implementing the tunables
1900fab9 336infrastructure.
3c20b9b6 337
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338@item
339Tom Quinn for contributing the startup code to support SunOS shared
340libraries and the port to SGI machines running Irix 4
341(@code{mips-sgi-irix4}).
342
04cb913d 343@item
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344Torvald Riegel for the implementation of new algorithms for semaphores,
345pthread_rwlock and condition variables.
346
347@item
348Maciej W. Rozycki for various fixes.
04cb913d 349
3c20b9b6 350@item
d8e272ab 351Pravin Satpute for writing sorting rules for some Indian languages.
3c20b9b6 352
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353@item
354Douglas C. Schmidt for writing the quick sort function used as a
355fallback by @code{qsort}.
356
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357@item
358Will Schmidt for optimized string functions on PowerPC.
359
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360@item
361Andreas Schwab for the port to Linux/m68k
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362(@code{m68k-@var{anything}-linux}), for his direction as part of
363@theglibc{} steering committee, and for various bug fixes.
4648c381 364
3c20b9b6 365@item
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366Martin Schwidefsky for porting to Linux on s390
367(@code{s390-@var{anything}-linux}) and s390x
368(@code{s390x-@var{anything}-linux}).
3c20b9b6 369
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370@item
371Thomas Schwinge for his contribution to Hurd and the SH architecture.
372
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373@item
374Andrew Senkevich for contributing vector math function implementations for x86.
375
3c20b9b6 376@item
d8e272ab 377Carlos Eduardo Seo for optimized functions on PowerPC.
3c20b9b6 378
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379@item
380Arjun Shankar for testing and bug fixing.
381
bc38c906 382@item
cedb2a90 383Marcus Shawcroft for contributing the AArch64 port.
bc38c906 384
3c20b9b6 385@item
d8e272ab 386Franz Sirl for various fixes.
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387
388@item
d8e272ab 389Jes Sorensen for porting to Linux on IA64 (@code{ia64-@var{anything}-linux}).
3c20b9b6 390
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391@item
392Rajalakshmi Srinivasaraghavan for various fixes and optimizations on PowerPC.
393
3c20b9b6 394@item
d8e272ab 395Richard Stallman for his contribution to the @code{getopt} function.
3c20b9b6 396
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397@item
398Alfred M. Szmidt for various fixes.
399
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400@item
401Chung-Lin Tang for contributing the Nios II port.
402
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403@item
404Ian Lance Taylor for contributing the port to the MIPS DECStation
405running Ultrix 4 (@code{mips-dec-ultrix4}).
406
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407@item
408Samuel Thibault for improving the Hurd port.
409
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410@item
411Pino Toscano for various fixes.
412
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413@item
414Tim Waugh for the implementation of the POSIX.2 @code{wordexp}
415function family.
416
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417@item
418Florian Weimer for his maintainership of the network component, for handling
419of security issues, and for various fixes.
420
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421@item
422Zack Weinberg for the @code{explicit_bzero} implementation and for various
423fixes.
424
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425@item
426Eric Youngdale for implementing versioning of objects on the symbol level.
427
428@item
1900fab9 429Adhemerval Zanella for optimized functions on PowerPC and various fixes.
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430
431@end itemize
432
433Some code in @theglibc{} comes from other projects and might be under
434a different license:
435
436@itemize @bullet
437@item
438The timezone support code is derived from the public-domain timezone
439package by Arthur David Olson and his many contributors.
440
441@item
442Some of the support code for Mach is taken from Mach 3.0 by CMU;
be208619 443the file @file{if_ppp.h} is also copyright by CMU, but under a different license;
d8e272ab 444see the file @file{LICENSES} for the text of the licenses.
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445
446@item
447The random number generation functions @code{random}, @code{srandom},
448@code{setstate} and @code{initstate}, which are also the basis for the
449@code{rand} and @code{srand} functions, were written by Earl T. Cohen
450for the University of California at Berkeley and are copyrighted by the
451Regents of the University of California. They have undergone minor
1f77f049 452changes to fit into @theglibc{} and to fit the @w{ISO C} standard,
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453but the functional code is Berkeley's.@refill
454
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455@item
456The Internet-related code (most of the @file{inet} subdirectory) and
457several other miscellaneous functions and header files have been
458included from 4.4 BSD with little or no modification. The copying
459permission notice for this code can be found in the file @file{LICENSES}
460in the source distribution.
461
462@item
463The @code{getaddrinfo} and @code{getnameinfo} functions and supporting
464code were written by Craig Metz; see the file @file{LICENSES} for
465details on their licensing.
466
3c20b9b6 467@item
c10c5267 468The DNS resolver code is taken directly from BIND 8.2.3-T5B, which
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469includes copyrighted code from UC Berkeley and from Digital Equipment
470Corporation. See the file @file{LICENSES} for the text of the DEC license.
471
472@item
473The code to support Sun RPC is taken verbatim from Sun's
474@w{@sc{rpcsrc-4.0}} distribution; see the file @file{LICENSES} for the
475text of the license.
3c20b9b6 476
c6c6dd48 477@item
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478The math functions are taken from @code{fdlibm-5.1} by Sun
479Microsystems, as modified by J.T. Conklin, Ian Lance Taylor,
480Ulrich Drepper, Andreas Schwab, and Roland McGrath.
481
482@item
483Many of the IEEE 64-bit double precision math functions
484(in the @file{sysdeps/ieee754/dbl-64} subdirectory) come
485from the IBM Accurate Mathematical Library, contributed by IBM.
3c20b9b6 486
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487@item
488Many of the IA64 math functions are taken from a collection of
489``Highly Optimized Mathematical Functions for Itanium'' that Intel
490makes available under a free license; see the file @file{LICENSES} for
491details.
3c20b9b6 492
3c20b9b6 493@end itemize