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 Rogerio Alves Cardoso for various fixes to PowerPC.
68 Paul Clarke for optimized functions on PowerPC.
71 Palmer Dabbelt for contributing the port to Linux/RISC-V.
74 DJ Delorie for maintenance of Linux/RISC-V, and various fixes.
77 Wilco Dijkstra for various fixes.
80 Liubov Dmitrieva for optimized string and math functions on x86-64 and
84 Ulrich Drepper for his many contributions in almost all parts of
85 @theglibc{}, including:
87 @item writing most of the POSIX Threads Library originally.
88 @item internationalization support, including the @code{locale} and
89 @code{localedef} utilities.
90 @item Linux i386/ELF support
91 @item the @code{hsearch} and @code{drand48} families of functions,
92 reentrant @samp{@dots{}@code{_r}} versions of the @code{random}
93 family; System V shared memory and IPC support code
94 @item several highly-optimized string functions for i@var{x}86
96 @item many math functions
97 @item the character conversion functions (@code{iconv})
98 @item the @code{ftw} and @code{nftw} functions
99 @item the floating-point printing function used by @code{printf} and friends
100 and the floating-point reading function used by @code{scanf},
101 @code{strtod} and friends
102 @item the @code{catgets} support and the entire suite of multi-byte
103 and wide-character support functions (@file{wctype.h}, @file{wchar.h}, etc.).
104 @item versioning of objects on the symbol level
108 Wilco Dijkstra for various fixes.
111 Richard Earnshaw for continued support and fixes to the various ARM
115 Paul Eggert for the @code{mktime} function and for his direction as
116 part of @theglibc{} steering committee.
119 Steve Ellcey for various fixes.
122 Mike FABIAN for automating Unicode updates, for updating the locale data
123 for ISO 14651, for updating the library Unicode support, and for various
124 locale updates and fixes.
127 Tulio Magno Quites Machado Filho for adding a new class of installed
128 headers for low-level platform-specific functionality and one such for
129 PowerPC and various fixes.
132 Mike Frysinger for his maintaining of the IA64 architecture and for
133 testing and bug fixing.
136 Martin Galvan for contributing gdb pretty printer support to glibc and adding
137 an initial set of pretty printers for structures in the POSIX Threads library.
140 Michael Glad for the passphrase-hashing function @code{crypt} and related
144 Wolfram Gloger for contributing the memory allocation functions
145 functions @code{malloc}, @code{realloc} and @code{free} and related
149 Gabriel F. T. Gomes for his improvements for Linux on PowerPC and for
150 implementing the IEEE 128-bit floating point type for PowerPC.
153 Torbj@"orn Granlund for fast implementations of many of the string
154 functions (@code{memcpy}, @code{strlen}, etc.).
157 Michael J. Haertel for writing the merge sort function @code{qsort}
158 and malloc checking functions like @code{mcheck}.
161 Bruno Haible for his improvements to the @code{iconv} and locale
165 Richard Henderson for the port to Linux on Alpha
166 (@code{alpha-@var{anything}-linux}) and software floating-point support.
169 David Holsgrove for the port to Linux on MicroBlaze.
172 Daniel Jacobowitz for various fixes and enhancements.
175 Andreas Jaeger for the port to Linux on x86-64
176 (@code{x86_64-@var{anything}-linux} and his work on Linux for MIPS
177 (@code{mips-@var{anything}-linux}), implementing the @file{ldconfig}
178 program, providing a test suite for the math library and for his
179 direction as part of @theglibc{} steering committee.
182 Aurelien Jarno for various fixes.
185 Rical Jasan for contributing various fixes in @theglibc{} manual.
188 Jakub Jelinek for implementing a number of checking functions,
189 software floating-point support and for
190 his direction as part of @theglibc{} steering committee.
193 Simon Josefsson for the @code{libidn} add-on.
196 Geoffrey Keating for the port to Linux on PowerPC
197 (@code{powerpc-@var{anything}-linux}).
200 Brendan Kehoe for contributing the port to the MIPS DECStation running
201 Ultrix 4 (@code{mips-dec-ultrix4}) and the port to the DEC Alpha
202 running OSF/1 (@code{alpha-dec-osf1}).
205 Mark Kettenis for implementing the @code{utmpx} interface and a utmp
206 daemon, and for a Hesiod NSS module.
209 Andi Kleen for implementing pthreads lock elision with TSX.
212 Kazumoto Kojima for the port of the Mach and Hurd code to the MIPS
213 architecture (@code{mips-@var{anything}-gnu}) and for his work on the
217 Maxim Kuvyrkov for various fixes.
220 Andreas Krebbel for his work on Linux for s390 and s390x.
223 Thorsten Kukuk for providing an implementation for NIS (YP) and NIS+,
224 securelevel 0, 1 and 2 and for the implementation for a caching daemon
225 for NSS (@file{nscd}).
228 Akhilesh Kumar for various fixes to locales.
231 Jeff Law for various fixes.
234 Doug Lea for contributing the memory allocation functions
235 @code{malloc}, @code{realloc} and @code{free} and related
239 Chris Leonard for various fixes and enhancements to localedata.
242 Stefan Liebler for various fixes.
245 Hongjiu Lu for providing the support for a Linux 32-bit runtime
246 environment under x86-64 (x32), for porting to Linux on IA64, for
247 improved string functions, a framework for testing IFUNC
248 implementations, for implementing Intel Control-Flow Enforcement
249 Technology, and many bug fixes.
252 Rafal Luzynski for contributing support for two grammatical forms of month
253 names, and for various fixes to locales.
256 Luis Machado for optimized functions on PowerPC.
259 David J. MacKenzie for his contribution to the @code{getopt}
260 function and writing the @file{tar.h} header.
263 Greg McGary for adding runtime support for bounds checking.
266 Roland McGrath for writing most of @theglibc{} originally, for his
267 work on the Hurd port, his direction as part of @theglibc{} steering
268 committee and as FSF Project Steward for @theglibc{}, and for many bug
269 fixes and reviewing of contributions.
272 Allan McRae for various fixes.
275 Jason Merrill for the port to the Sequent Symmetry running Dynix
276 version 3 (@code{i386-sequent-bsd}).
279 Chris Metcalf for the port to Linux/Tile
280 (@code{tilegx-@var{anything}-linux} and
281 @code{tilepro-@var{anything}-linux}) and support for the generic Linux
282 kernel syscall interface used by several newer ports.
285 David Miller for contributing the port to Linux/Sparc
286 (@code{sparc*-@var{anything}-linux}).
289 Alan Modra for his improvements for Linux on PowerPC.
292 David Mosberger-Tang for contributing the port to Linux/Alpha
293 (@code{alpha-@var{anything}-linux}).
296 Wainer dos Santos Moschetta for various fixes to powerpc.
299 Stephen Moshier for implementing some 128-bit long double format math
303 Stephen Munroe for his port to Linux on PowerPC64
304 (@code{powerpc64-@var{anything}-linux}) and for adding optimized
305 implementations for PowerPC.
308 Paul E. Murphy for various fixes on PowerPC and for implementing the IEEE
309 128-bit floating point type for PowerPC.
312 Joseph S. Myers for numerous bug fixes for the libm functions, for
313 his maintainership of the ARM and MIPS architectures and the math
314 component, improving cross-compilation and cross-testing of
315 @theglibc{}, expanded coverage of conformtest, merging the ports/
316 subdirectory into the @glibcadj{} main repository and his direction as
317 FSF Project Steward for @theglibc{}.
320 Marko Myllynen for various fixes.
323 Szabolcs Nagy for various fixes.
326 Will Newton for contributing some optimized string functions and pointer
327 encryption support for ARM and various fixes.
330 Carlos O'Donell for his maintainership of the HPPA architecture, for
331 maintaining @theglibc{} web pages and wiki, for his direction as FSF
332 Project Steward for @theglibc{} and various bug fixes.
335 Alexandre Oliva for adding TLS descriptors for LD and GD on x86 and
336 x86-64, for the am33 port, for completing the MIPS n64/n32/o32 multilib
337 port, for thread-safety, async-signal safety and async-cancellation
338 safety documentation in the manual, for his direction as FSF Project
339 Maintainer and for various fixes.
342 Paul Pluzhnikov for various fixes.
345 Marek Polacek for various fixes.
348 Siddhesh Poyarekar for various fixes, an implementation of a framework for
349 performance benchmarking of functions and implementing the tunables
353 Tom Quinn for contributing the startup code to support SunOS shared
354 libraries and the port to SGI machines running Irix 4
355 (@code{mips-sgi-irix4}).
358 Torvald Riegel for the implementation of new algorithms for semaphores,
359 pthread_rwlock and condition variables.
362 Maciej W. Rozycki for MIPS fixes, support for ABSOLUTE symbols,
366 Pravin Satpute for writing sorting rules for some Indian languages.
369 Douglas C. Schmidt for writing the quick sort function used as a
370 fallback by @code{qsort}.
373 Will Schmidt for optimized string functions on PowerPC.
376 Andreas Schwab for the port to Linux/m68k
377 (@code{m68k-@var{anything}-linux}), for his direction as part of
378 @theglibc{} steering committee, and for various bug fixes.
381 Martin Schwidefsky for porting to Linux on s390
382 (@code{s390-@var{anything}-linux}) and s390x
383 (@code{s390x-@var{anything}-linux}).
386 Thomas Schwinge for his contribution to Hurd and the SH architecture.
389 Andrew Senkevich for contributing vector math function implementations for x86.
392 Carlos Eduardo Seo for optimized functions on PowerPC.
395 Arjun Shankar for testing and bug fixing.
398 Marcus Shawcroft for contributing the AArch64 port.
401 Franz Sirl for various fixes.
404 Jes Sorensen for porting to Linux on IA64 (@code{ia64-@var{anything}-linux}).
407 Rajalakshmi Srinivasaraghavan for various fixes and optimizations on PowerPC
408 and for implementing the IEEE 128-bit floating point type for PowerPC.
411 Richard Stallman for his contribution to the @code{getopt} function.
414 Alfred M. Szmidt for various fixes.
417 Chung-Lin Tang for contributing the Nios II port.
420 Ian Lance Taylor for contributing the port to the MIPS DECStation
421 running Ultrix 4 (@code{mips-dec-ultrix4}).
424 Samuel Thibault for improving the Hurd port.
427 Pino Toscano for various fixes.
430 Tim Waugh for the implementation of the POSIX.2 @code{wordexp}
434 Florian Weimer for his maintainership of the network component, for handling
435 of security issues, and for various fixes.
438 Zack Weinberg for the @code{explicit_bzero} implementation and for various
442 Eric Youngdale for implementing versioning of objects on the symbol level.
445 Adhemerval Zanella for optimized functions on PowerPC, ISO C threads support
450 Some code in @theglibc{} comes from other projects and might be under
455 The timezone support code is derived from the public-domain timezone
456 package by Arthur David Olson and his many contributors.
459 Some of the support code for Mach is taken from Mach 3.0 by CMU;
460 the file @file{if_ppp.h} is also copyright by CMU, but under a different license;
461 see the file @file{LICENSES} for the text of the licenses.
464 The random number generation functions @code{random}, @code{srandom},
465 @code{setstate} and @code{initstate}, which are also the basis for the
466 @code{rand} and @code{srand} functions, were written by Earl T. Cohen
467 for the University of California at Berkeley and are copyrighted by the
468 Regents of the University of California. They have undergone minor
469 changes to fit into @theglibc{} and to fit the @w{ISO C} standard,
470 but the functional code is Berkeley's.@refill
473 The Internet-related code (most of the @file{inet} subdirectory) and
474 several other miscellaneous functions and header files have been
475 included from 4.4 BSD with little or no modification. The copying
476 permission notice for this code can be found in the file @file{LICENSES}
477 in the source distribution.
480 The @code{getaddrinfo} and @code{getnameinfo} functions and supporting
481 code were written by Craig Metz; see the file @file{LICENSES} for
482 details on their licensing.
485 The DNS resolver code is taken directly from BIND 8.2.3-T5B, which
486 includes copyrighted code from UC Berkeley and from Digital Equipment
487 Corporation. See the file @file{LICENSES} for the text of the DEC license.
490 The code to support Sun RPC is taken verbatim from Sun's
491 @w{@sc{rpcsrc-4.0}} distribution; see the file @file{LICENSES} for the
495 The math functions are taken from @code{fdlibm-5.1} by Sun
496 Microsystems, as modified by J.T. Conklin, Ian Lance Taylor,
497 Ulrich Drepper, Andreas Schwab, and Roland McGrath.
500 Many of the IEEE 64-bit double precision math functions
501 (in the @file{sysdeps/ieee754/dbl-64} subdirectory) come
502 from the IBM Accurate Mathematical Library, contributed by IBM.
505 Many of the IA64 math functions are taken from a collection of
506 ``Highly Optimized Mathematical Functions for Itanium'' that Intel
507 makes available under a free license; see the file @file{LICENSES} for