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 Ryan S. Arnold for his improvements for Linux on PowerPC and his direction
23 as FSF Project Steward for @theglibc{}.
26 Miles Bader for writing the @code{argp} argument-parsing package, and the
27 @code{argz}/@code{envz} interfaces.
30 Jeff Bailey for his maintainership of the HPPA architecture.
33 Petr Baudis for bug fixes and testing.
36 Stephen R. van den Berg for contributing a highly-optimized
37 @code{strstr} function.
40 Ondrej Bilka for contributing optimized string routines for x64 and various
44 Eric Blake for adding O(n) implementations of @code{memmem},
45 @code{strstr} and @code{strcasestr}.
48 Philip 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
54 Per Bothner for the implementation of the @code{libio} library which
55 is used to implement @code{stdio} functions.
58 Mark Brown for his direction as part of @theglibc{} steering
62 Thomas Bushnell for his contributions to Hurd.
65 Palmer Dabbelt for contributing the port to Linux/RISC-V.
68 DJ Delorie for various fixes.
71 Wilco Dijkstra for various fixes.
74 Liubov Dmitrieva for optimized string and math functions on x86-64 and
78 Ulrich Drepper for his many contributions in almost all parts of
79 @theglibc{}, including:
81 @item writing most of the POSIX Threads Library originally.
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,
86 reentrant @samp{@dots{}@code{_r}} versions of the @code{random}
87 family; System V shared memory and IPC support code
88 @item several highly-optimized string functions for i@var{x}86
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
94 and 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
97 and wide-character support functions (@file{wctype.h}, @file{wchar.h}, etc.).
98 @item versioning of objects on the symbol level
102 Wilco Dijkstra for various fixes.
105 Richard Earnshaw for continued support and fixes to the various ARM
109 Paul Eggert for the @code{mktime} function and for his direction as
110 part of @theglibc{} steering committee.
113 Steve Ellcey for various fixes.
116 Mike FABIAN for various fixes to locales.
119 Tulio Magno Quites Machado Filho for adding a new class of installed
120 headers for low-level platform-specific functionality and one such for
121 PowerPC and various fixes.
124 Mike Frysinger for his maintaining of the IA64 architecture and for
125 testing and bug fixing.
128 Martin Galvan for contributing gdb pretty printer support to glibc and adding
129 an initial set of pretty printers for structures in the POSIX Threads library.
132 Michael Glad for the DES encryption function @code{crypt} and related
136 Wolfram Gloger for contributing the memory allocation functions
137 functions @code{malloc}, @code{realloc} and @code{free} and related
141 Torbj@"orn Granlund for fast implementations of many of the string
142 functions (@code{memcpy}, @code{strlen}, etc.).
145 Michael J. Haertel for writing the merge sort function @code{qsort}
146 and malloc checking functions like @code{mcheck}.
149 Bruno Haible for his improvements to the @code{iconv} and locale
153 Richard Henderson for the port to Linux on Alpha
154 (@code{alpha-@var{anything}-linux}) and software floating-point support.
157 David Holsgrove for the port to Linux on MicroBlaze.
160 Daniel Jacobowitz for various fixes and enhancements.
163 Andreas 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}
166 program, providing a test suite for the math library and for his
167 direction as part of @theglibc{} steering committee.
170 Aurelien Jarno for various fixes.
173 Rical Jasan for contributing various fixes in @theglibc{} manual.
176 Jakub Jelinek for implementing a number of checking functions,
177 software floating-point support and for
178 his direction as part of @theglibc{} steering committee.
181 Simon Josefsson for the @code{libidn} add-on.
184 Geoffrey Keating for the port to Linux on PowerPC
185 (@code{powerpc-@var{anything}-linux}).
188 Brendan Kehoe for contributing the port to the MIPS DECStation running
189 Ultrix 4 (@code{mips-dec-ultrix4}) and the port to the DEC Alpha
190 running OSF/1 (@code{alpha-dec-osf1}).
193 Mark Kettenis for implementing the @code{utmpx} interface and a utmp
194 daemon, and for a Hesiod NSS module.
197 Andi Kleen for implementing pthreads lock elision with TSX.
200 Kazumoto Kojima for the port of the Mach and Hurd code to the MIPS
201 architecture (@code{mips-@var{anything}-gnu}) and for his work on the
205 Maxim Kuvyrkov for various fixes.
208 Andreas Krebbel for his work on Linux for s390 and s390x.
211 Thorsten Kukuk for providing an implementation for NIS (YP) and NIS+,
212 securelevel 0, 1 and 2 and for the implementation for a caching daemon
213 for NSS (@file{nscd}).
216 Akhilesh Kumar for various fixes to locales.
219 Jeff Law for various fixes.
222 Doug Lea for contributing the memory allocation functions
223 @code{malloc}, @code{realloc} and @code{free} and related
227 Chris Leonard for various fixes and enhancements to localedata.
230 Stefan Liebler for various fixes.
233 Hongjiu Lu for providing the support for a Linux 32-bit runtime
234 environment under x86-64 (x32), for porting to Linux on IA64, for
235 improved string functions, a framework for testing IFUNC
236 implementations, and many bug fixes.
239 Rafal Luzynski for contributing support for two grammatical forms of month
240 names, and for various fixes to locales.
243 Luis Machado for optimized functions on PowerPC.
246 David J. MacKenzie for his contribution to the @code{getopt}
247 function and writing the @file{tar.h} header.
250 Greg McGary for adding runtime support for bounds checking.
253 Roland McGrath for writing most of @theglibc{} originally, for his
254 work on the Hurd port, his direction as part of @theglibc{} steering
255 committee and as FSF Project Steward for @theglibc{}, and for many bug
256 fixes and reviewing of contributions.
259 Allan McRae for various fixes.
262 Jason Merrill for the port to the Sequent Symmetry running Dynix
263 version 3 (@code{i386-sequent-bsd}).
266 Chris Metcalf for the port to Linux/Tile
267 (@code{tilegx-@var{anything}-linux} and
268 @code{tilepro-@var{anything}-linux}).
271 David Miller for contributing the port to Linux/Sparc
272 (@code{sparc*-@var{anything}-linux}).
275 Alan Modra for his improvements for Linux on PowerPC.
278 David Mosberger-Tang for contributing the port to Linux/Alpha
279 (@code{alpha-@var{anything}-linux}).
282 Wainer dos Santos Moschetta for various fixes to powerpc.
285 Stephen Moshier for implementing some 128-bit long double format math
289 Stephen Munroe for his port to Linux on PowerPC64
290 (@code{powerpc64-@var{anything}-linux}) and for adding optimized
291 implementations for PowerPC.
294 Paul E. Murphy for various fixes on PowerPC.
297 Joseph S. Myers for numerous bug fixes for the libm functions, for
298 his maintainership of the ARM and MIPS architectures, improving
299 cross-compilation and cross-testing of @theglibc{}, expanded
300 coverage of conformtest, merging the ports/ subdirectory
301 into the @glibcadj{} main repository and his direction as FSF Project
302 Steward for @theglibc{}.
305 Marko Myllynen for various fixes.
308 Szabolcs Nagy for various fixes.
311 Will Newton for contributing some optimized string functions and pointer
312 encryption support for ARM and various fixes.
315 Carlos O'Donell for his maintainership of the HPPA architecture, for
316 maintaining @theglibc{} web pages and wiki, for his direction as FSF
317 Project Steward for @theglibc{} and various bug fixes.
320 Alexandre Oliva for adding TLS descriptors for LD and GD on x86 and
321 x86-64, for the am33 port, for completing the MIPS n64/n32/o32 multilib
322 port, for thread-safety, async-signal safety and async-cancellation
323 safety documentation in the manual, for his direction as FSF Project
324 Maintainer and for various fixes.
327 Paul Pluzhnikov for various fixes.
330 Marek Polacek for various fixes.
333 Siddhesh Poyarekar for various fixes, an implementation of a framework for
334 performance benchmarking of functions and implementing the tunables
338 Tom Quinn for contributing the startup code to support SunOS shared
339 libraries and the port to SGI machines running Irix 4
340 (@code{mips-sgi-irix4}).
343 Torvald Riegel for the implementation of new algorithms for semaphores,
344 pthread_rwlock and condition variables.
347 Maciej W. Rozycki for various fixes.
350 Pravin Satpute for writing sorting rules for some Indian languages.
353 Douglas C. Schmidt for writing the quick sort function used as a
354 fallback by @code{qsort}.
357 Will Schmidt for optimized string functions on PowerPC.
360 Andreas Schwab for the port to Linux/m68k
361 (@code{m68k-@var{anything}-linux}), for his direction as part of
362 @theglibc{} steering committee, and for various bug fixes.
365 Martin Schwidefsky for porting to Linux on s390
366 (@code{s390-@var{anything}-linux}) and s390x
367 (@code{s390x-@var{anything}-linux}).
370 Thomas Schwinge for his contribution to Hurd and the SH architecture.
373 Andrew Senkevich for contributing vector math function implementations for x86.
376 Carlos Eduardo Seo for optimized functions on PowerPC.
379 Arjun Shankar for testing and bug fixing.
382 Marcus Shawcroft for contributing the AArch64 port.
385 Franz Sirl for various fixes.
388 Jes Sorensen for porting to Linux on IA64 (@code{ia64-@var{anything}-linux}).
391 Rajalakshmi Srinivasaraghavan for various fixes and optimizations on PowerPC.
394 Richard Stallman for his contribution to the @code{getopt} function.
397 Alfred M. Szmidt for various fixes.
400 Chung-Lin Tang for contributing the Nios II port.
403 Ian Lance Taylor for contributing the port to the MIPS DECStation
404 running Ultrix 4 (@code{mips-dec-ultrix4}).
407 Samuel Thibault for improving the Hurd port.
410 Pino Toscano for various fixes.
413 Tim Waugh for the implementation of the POSIX.2 @code{wordexp}
417 Florian Weimer for his maintainership of the network component, for handling
418 of security issues, and for various fixes.
421 Zack Weinberg for the @code{explicit_bzero} implementation and for various
425 Eric Youngdale for implementing versioning of objects on the symbol level.
428 Adhemerval Zanella for optimized functions on PowerPC and various fixes.
432 Some code in @theglibc{} comes from other projects and might be under
437 The timezone support code is derived from the public-domain timezone
438 package by Arthur David Olson and his many contributors.
441 Some of the support code for Mach is taken from Mach 3.0 by CMU;
442 the file @file{if_ppp.h} is also copyright by CMU, but under a different license;
443 see the file @file{LICENSES} for the text of the licenses.
446 The random number generation functions @code{random}, @code{srandom},
447 @code{setstate} and @code{initstate}, which are also the basis for the
448 @code{rand} and @code{srand} functions, were written by Earl T. Cohen
449 for the University of California at Berkeley and are copyrighted by the
450 Regents of the University of California. They have undergone minor
451 changes to fit into @theglibc{} and to fit the @w{ISO C} standard,
452 but the functional code is Berkeley's.@refill
455 The Internet-related code (most of the @file{inet} subdirectory) and
456 several other miscellaneous functions and header files have been
457 included from 4.4 BSD with little or no modification. The copying
458 permission notice for this code can be found in the file @file{LICENSES}
459 in the source distribution.
462 The @code{getaddrinfo} and @code{getnameinfo} functions and supporting
463 code were written by Craig Metz; see the file @file{LICENSES} for
464 details on their licensing.
467 The DNS resolver code is taken directly from BIND 8.2.3-T5B, which
468 includes copyrighted code from UC Berkeley and from Digital Equipment
469 Corporation. See the file @file{LICENSES} for the text of the DEC license.
472 The code to support Sun RPC is taken verbatim from Sun's
473 @w{@sc{rpcsrc-4.0}} distribution; see the file @file{LICENSES} for the
477 The math functions are taken from @code{fdlibm-5.1} by Sun
478 Microsystems, as modified by J.T. Conklin, Ian Lance Taylor,
479 Ulrich Drepper, Andreas Schwab, and Roland McGrath.
482 Many of the IEEE 64-bit double precision math functions
483 (in the @file{sysdeps/ieee754/dbl-64} subdirectory) come
484 from the IBM Accurate Mathematical Library, contributed by IBM.
487 Many of the IA64 math functions are taken from a collection of
488 ``Highly Optimized Mathematical Functions for Itanium'' that Intel
489 makes available under a free license; see the file @file{LICENSES} for