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 DJ Delorie for various fixes.
68 Wilco Dijkstra for various fixes.
71 Liubov Dmitrieva for optimized string and math functions on x86-64 and
75 Ulrich Drepper for his many contributions in almost all parts of
76 @theglibc{}, including:
78 @item writing most of the POSIX Threads Library originally.
79 @item internationalization support, including the @code{locale} and
80 @code{localedef} utilities.
81 @item Linux i386/ELF support
82 @item the @code{hsearch} and @code{drand48} families of functions,
83 reentrant @samp{@dots{}@code{_r}} versions of the @code{random}
84 family; System V shared memory and IPC support code
85 @item several highly-optimized string functions for i@var{x}86
87 @item many math functions
88 @item the character conversion functions (@code{iconv})
89 @item the @code{ftw} and @code{nftw} functions
90 @item the floating-point printing function used by @code{printf} and friends
91 and the floating-point reading function used by @code{scanf},
92 @code{strtod} and friends
93 @item the @code{catgets} support and the entire suite of multi-byte
94 and wide-character support functions (@file{wctype.h}, @file{wchar.h}, etc.).
95 @item versioning of objects on the symbol level
99 Wilco Dijkstra for various fixes.
102 Richard Earnshaw for continued support and fixes to the various ARM
106 Paul Eggert for the @code{mktime} function and for his direction as
107 part of @theglibc{} steering committee.
110 Steve Ellcey for various fixes.
114 Mike FABIAN for various fixes to locales.
117 Tulio Magno Quites Machado Filho for adding a new class of installed
118 headers for low-level platform-specific functionality and one such for
119 PowerPC and various fixes.
122 Mike Frysinger for his maintaining of the IA64 architecture and for
123 testing and bug fixing.
126 Martin Galvan for contributing gdb pretty printer support to glibc and adding
127 an initial set of pretty printers for structures in the POSIX Threads library.
130 Michael Glad for the DES encryption function @code{crypt} and related
134 Wolfram Gloger for contributing the memory allocation functions
135 functions @code{malloc}, @code{realloc} and @code{free} and related
139 Torbj@"orn Granlund for fast implementations of many of the string
140 functions (@code{memcpy}, @code{strlen}, etc.).
143 Michael J. Haertel for writing the merge sort function @code{qsort}
144 and malloc checking functions like @code{mcheck}.
147 Bruno Haible for his improvements to the @code{iconv} and locale
151 Richard Henderson for the port to Linux on Alpha
152 (@code{alpha-@var{anything}-linux}) and software floating-point support.
155 David Holsgrove for the port to Linux on MicroBlaze.
158 Daniel Jacobowitz for various fixes and enhancements.
161 Andreas Jaeger for the port to Linux on x86-64
162 (@code{x86_64-@var{anything}-linux} and his work on Linux for MIPS
163 (@code{mips-@var{anything}-linux}), implementing the @file{ldconfig}
164 program, providing a test suite for the math library and for his
165 direction as part of @theglibc{} steering committee.
168 Aurelien Jarno for various fixes.
171 Rical Jasan for contributing various fixes in @theglibc{} manual.
174 Jakub Jelinek for implementing a number of checking functions,
175 software floating-point support and for
176 his direction as part of @theglibc{} steering committee.
179 Simon Josefsson for the @code{libidn} add-on.
182 Geoffrey Keating for the port to Linux on PowerPC
183 (@code{powerpc-@var{anything}-linux}).
186 Brendan Kehoe for contributing the port to the MIPS DECStation running
187 Ultrix 4 (@code{mips-dec-ultrix4}) and the port to the DEC Alpha
188 running OSF/1 (@code{alpha-dec-osf1}).
191 Mark Kettenis for implementing the @code{utmpx} interface and a utmp
192 daemon, and for a Hesiod NSS module.
195 Andi Kleen for implementing pthreads lock elision with TSX.
198 Kazumoto Kojima for the port of the Mach and Hurd code to the MIPS
199 architecture (@code{mips-@var{anything}-gnu}) and for his work on the
203 Maxim Kuvyrkov for various fixes.
206 Andreas Krebbel for his work on Linux for s390 and s390x.
209 Thorsten Kukuk for providing an implementation for NIS (YP) and NIS+,
210 securelevel 0, 1 and 2 and for the implementation for a caching daemon
211 for NSS (@file{nscd}).
214 Akhilesh Kumar for various fixes to locales.
217 Jeff Law for various fixes.
220 Doug Lea for contributing the memory allocation functions
221 @code{malloc}, @code{realloc} and @code{free} and related
225 Chris Leonard for various fixes and enhancements to localedata.
228 Stefan Liebler for various fixes.
231 Hongjiu Lu for providing the support for a Linux 32-bit runtime
232 environment under x86-64 (x32), for porting to Linux on IA64, for
233 improved string functions, a framework for testing IFUNC
234 implementations, and many bug fixes.
237 Rafal Luzynski for various fixes to locales.
240 Luis Machado for optimized functions on PowerPC.
243 David J. MacKenzie for his contribution to the @code{getopt}
244 function and writing the @file{tar.h} header.
247 Greg McGary for adding runtime support for bounds checking.
250 Roland McGrath for writing most of @theglibc{} originally, for his
251 work on the Hurd port, his direction as part of @theglibc{} steering
252 committee and as FSF Project Steward for @theglibc{}, and for many bug
253 fixes and reviewing of contributions.
256 Allan McRae for various fixes.
259 Jason Merrill for the port to the Sequent Symmetry running Dynix
260 version 3 (@code{i386-sequent-bsd}).
263 Chris Metcalf for the port to Linux/Tile
264 (@code{tilegx-@var{anything}-linux} and
265 @code{tilepro-@var{anything}-linux}).
268 David Miller for contributing the port to Linux/Sparc
269 (@code{sparc*-@var{anything}-linux}).
272 Alan Modra for his improvements for Linux on PowerPC.
275 David Mosberger-Tang for contributing the port to Linux/Alpha
276 (@code{alpha-@var{anything}-linux}).
279 Wainer dos Santos Moschetta for various fixes to powerpc.
282 Stephen Moshier for implementing some 128-bit long double format math
286 Stephen Munroe for his port to Linux on PowerPC64
287 (@code{powerpc64-@var{anything}-linux}) and for adding optimized
288 implementations for PowerPC.
291 Paul E. Murphy for various fixes on PowerPC.
294 Joseph S. Myers for numerous bug fixes for the libm functions, for
295 his maintainership of the ARM and MIPS architectures, improving
296 cross-compilation and cross-testing of @theglibc{}, expanded
297 coverage of conformtest, merging the ports/ subdirectory
298 into the @glibcadj{} main repository and his direction as FSF Project
299 Steward for @theglibc{}.
302 Marko Myllynen for various fixes.
305 Szabolcs Nagy for various fixes.
308 Will Newton for contributing some optimized string functions and pointer
309 encryption support for ARM and various fixes.
312 Carlos O'Donell for his maintainership of the HPPA architecture, for
313 maintaining @theglibc{} web pages and wiki, for his direction as FSF
314 Project Steward for @theglibc{} and various bug fixes.
317 Alexandre Oliva for adding TLS descriptors for LD and GD on x86 and
318 x86-64, for the am33 port, for completing the MIPS n64/n32/o32 multilib
319 port, for thread-safety, async-signal safety and async-cancellation
320 safety documentation in the manual, for his direction as FSF Project
321 Maintainer and for various fixes.
324 Paul Pluzhnikov for various fixes.
327 Marek Polacek for various fixes.
330 Siddhesh Poyarekar for various fixes, an implementation of a framework for
331 performance benchmarking of functions and implementing the tunables
335 Tom Quinn for contributing the startup code to support SunOS shared
336 libraries and the port to SGI machines running Irix 4
337 (@code{mips-sgi-irix4}).
340 Torvald Riegel for the implementation of new algorithms for semaphores,
341 pthread_rwlock and condition variables.
344 Maciej W. Rozycki for various fixes.
347 Pravin Satpute for writing sorting rules for some Indian languages.
350 Douglas C. Schmidt for writing the quick sort function used as a
351 fallback by @code{qsort}.
354 Will Schmidt for optimized string functions on PowerPC.
357 Andreas Schwab for the port to Linux/m68k
358 (@code{m68k-@var{anything}-linux}) and for his direction as part of
359 @theglibc{} steering committee.
362 Martin Schwidefsky for porting to Linux on s390
363 (@code{s390-@var{anything}-linux}) and s390x
364 (@code{s390x-@var{anything}-linux}).
367 Thomas Schwinge for his contribution to Hurd and the SH architecture.
370 Andrew Senkevich for contributing vector math function implementations for x86.
373 Carlos Eduardo Seo for optimized functions on PowerPC.
376 Marcus Shawcroft for contributing the AArch64 port.
379 Franz Sirl for various fixes.
382 Jes Sorensen for porting to Linux on IA64 (@code{ia64-@var{anything}-linux}).
385 Rajalakshmi Srinivasaraghavan for various fixes and optimizations on PowerPC.
388 Richard Stallman for his contribution to the @code{getopt} function.
391 Alfred M. Szmidt for various fixes.
394 Chung-Lin Tang for contributing the Nios II port.
397 Ian Lance Taylor for contributing the port to the MIPS DECStation
398 running Ultrix 4 (@code{mips-dec-ultrix4}).
401 Samuel Thibault for improving the Hurd port.
404 Pino Toscano for various fixes.
407 Tim Waugh for the implementation of the POSIX.2 @code{wordexp}
411 Zack Weinberg for the @code{explicit_bzero} implementation and for various
415 Eric Youngdale for implementing versioning of objects on the symbol level.
418 Adhemerval Zanella for optimized functions on PowerPC and various fixes.
422 Some code in @theglibc{} comes from other projects and might be under
427 The timezone support code is derived from the public-domain timezone
428 package by Arthur David Olson and his many contributors.
431 Some of the support code for Mach is taken from Mach 3.0 by CMU;
432 the file @file{if_ppp.h} is also copyright by CMU, but under a different license;
433 see the file @file{LICENSES} for the text of the licenses.
436 The random number generation functions @code{random}, @code{srandom},
437 @code{setstate} and @code{initstate}, which are also the basis for the
438 @code{rand} and @code{srand} functions, were written by Earl T. Cohen
439 for the University of California at Berkeley and are copyrighted by the
440 Regents of the University of California. They have undergone minor
441 changes to fit into @theglibc{} and to fit the @w{ISO C} standard,
442 but the functional code is Berkeley's.@refill
445 The Internet-related code (most of the @file{inet} subdirectory) and
446 several other miscellaneous functions and header files have been
447 included from 4.4 BSD with little or no modification. The copying
448 permission notice for this code can be found in the file @file{LICENSES}
449 in the source distribution.
452 The @code{getaddrinfo} and @code{getnameinfo} functions and supporting
453 code were written by Craig Metz; see the file @file{LICENSES} for
454 details on their licensing.
457 The DNS resolver code is taken directly from BIND 8.2.3-T5B, which
458 includes copyrighted code from UC Berkeley and from Digital Equipment
459 Corporation. See the file @file{LICENSES} for the text of the DEC license.
462 The code to support Sun RPC is taken verbatim from Sun's
463 @w{@sc{rpcsrc-4.0}} distribution; see the file @file{LICENSES} for the
467 The math functions are taken from @code{fdlibm-5.1} by Sun
468 Microsystems, as modified by J.T. Conklin, Ian Lance Taylor,
469 Ulrich Drepper, Andreas Schwab, and Roland McGrath.
472 Many of the IEEE 64-bit double precision math functions
473 (in the @file{sysdeps/ieee754/dbl-64} subdirectory) come
474 from the IBM Accurate Mathematical Library, contributed by IBM.
477 Many of the IA64 math functions are taken from a collection of
478 ``Highly Optimized Mathematical Functions for Itanium'' that Intel
479 makes available under a free license; see the file @file{LICENSES} for