@node Contributors, Free Manuals, Platform, Top

@c %MENU% Who wrote what parts of the GNU C Library

@appendix Contributors to @theglibc{}

@Theglibc{} project would like to thank its many contributors.

Without them the project would not have been nearly as successful as

it has been.  Any omissions in this list are accidental.  Feel free to

file a bug in bugzilla if you have been left out or some of your

contributions are not listed.  Please keep this list in alphabetical

order.

@itemize @bullet

@item

Nick Alcock for contributing fixes to allow @theglibc{} to be built with the

stack smashing protector enabled.

@item

John David Anglin for various fixes to the hppa port.

@item

Ryan S. Arnold for his improvements for Linux on PowerPC and his direction

as FSF Project Steward for @theglibc{}.

@item

Miles Bader for writing the @code{argp} argument-parsing package, and the

@code{argz}/@code{envz} interfaces.

@item

Jeff Bailey for his maintainership of the HPPA architecture.

@item

Petr Baudis for bug fixes and testing.

@item

Stephen R. van den Berg for contributing a highly-optimized

@code{strstr} function.

@item

Ondrej Bilka for contributing optimized string routines for x64 and various

fixes.

@item

Eric Blake for adding O(n) implementations of @code{memmem},

@code{strstr} and @code{strcasestr}.

@item

Philip Blundell for the ports to Linux/ARM

(@code{arm-@var{ANYTHING}-linuxaout}) and ARM standalone

(@code{arm-@var{ANYTHING}-none}), as well as for parts of the IPv6

support code.

@item

Per Bothner for the implementation of the @code{libio} library which

is used to implement @code{stdio} functions.

@item

Mark Brown for his direction as part of @theglibc{} steering

committee.

@item

Thomas Bushnell for his contributions to Hurd.

@item

Rogerio Alves Cardoso for various fixes to PowerPC.

@item

Paul Clarke for optimized functions on PowerPC.

@item

Palmer Dabbelt for contributing the port to Linux/RISC-V.

@item

DJ Delorie for maintenance of Linux/RISC-V, and various fixes.

@item

Wilco Dijkstra for various fixes.

@item

Liubov Dmitrieva for optimized string and math functions on x86-64 and

x86.

@item

Ulrich Drepper for his many contributions in almost all parts of

@theglibc{}, including:

@itemize @bullet

@item writing most of the POSIX Threads Library originally.

@item internationalization support, including the @code{locale} and

@code{localedef} utilities.

@item Linux i386/ELF support

@item the @code{hsearch} and @code{drand48} families of functions,

reentrant @samp{@dots{}@code{_r}} versions of the @code{random}

family; System V shared memory and IPC support code

@item several highly-optimized string functions for i@var{x}86

processors

@item many math functions

@item the character conversion functions (@code{iconv})

@item the @code{ftw} and @code{nftw} functions

@item the floating-point printing function used by @code{printf} and friends

and the floating-point reading function used by @code{scanf},

@code{strtod} and friends

@item the @code{catgets} support and the entire suite of multi-byte

and wide-character support functions (@file{wctype.h}, @file{wchar.h}, etc.).

@item versioning of objects on the symbol level

@end itemize

@item

Wilco Dijkstra for various fixes.

@item

Richard Earnshaw for continued support and fixes to the various ARM

machine files.

@item

Paul Eggert for the @code{mktime} function and for his direction as

part of @theglibc{} steering committee.

@item

Steve Ellcey for various fixes.

@item

Mike FABIAN for automating Unicode updates, for updating the locale data

for ISO 14651, for updating the library Unicode support, and for various

locale updates and fixes.

@item

Tulio Magno Quites Machado Filho for adding a new class of installed

headers for low-level platform-specific functionality and one such for

PowerPC and various fixes.

@item

Mike Frysinger for his maintaining of the IA64 architecture and for

testing and bug fixing.

@item

Martin Galvan for contributing gdb pretty printer support to glibc and adding

an initial set of pretty printers for structures in the POSIX Threads library.

@item

Michael Glad for the passphrase-hashing function @code{crypt} and related

functions.

@item

Wolfram Gloger for contributing the memory allocation functions

functions @code{malloc}, @code{realloc} and @code{free} and related

code.

@item

Gabriel F. T. Gomes for his improvements for Linux on PowerPC and for

implementing the IEEE 128-bit floating point type for PowerPC.

@item

Torbj@"orn Granlund for fast implementations of many of the string

functions (@code{memcpy}, @code{strlen}, etc.).

@item

Michael J. Haertel for writing the merge sort function @code{qsort}

and malloc checking functions like @code{mcheck}.

@item

Bruno Haible for his improvements to the @code{iconv} and locale

implementations.

@item

Richard Henderson for the port to Linux on Alpha

(@code{alpha-@var{anything}-linux}) and software floating-point support.

@item

David Holsgrove for the port to Linux on MicroBlaze.

@item

Daniel Jacobowitz for various fixes and enhancements.

@item

Andreas Jaeger for the port to Linux on x86-64

(@code{x86_64-@var{anything}-linux} and his work on Linux for MIPS

(@code{mips-@var{anything}-linux}), implementing the @file{ldconfig}

program, providing a test suite for the math library and for his

direction as part of @theglibc{} steering committee.

@item

Aurelien Jarno for various fixes.

@item

Rical Jasan for contributing various fixes in @theglibc{} manual.

@item

Jakub Jelinek for implementing a number of checking functions,

software floating-point support and for

his direction as part of @theglibc{} steering committee.

@item

Simon Josefsson for the @code{libidn} add-on.

@item

Geoffrey Keating for the port to Linux on PowerPC

(@code{powerpc-@var{anything}-linux}).

@item

Brendan Kehoe for contributing the port to the MIPS DECStation running

Ultrix 4 (@code{mips-dec-ultrix4}) and the port to the DEC Alpha

running OSF/1 (@code{alpha-dec-osf1}).

@item

Mark Kettenis for implementing the @code{utmpx} interface and a utmp

daemon, and for a Hesiod NSS module.

@item

Andi Kleen for implementing pthreads lock elision with TSX.

@item

Kazumoto Kojima for the port of the Mach and Hurd code to the MIPS

architecture (@code{mips-@var{anything}-gnu}) and for his work on the

SH architecture.

@item

Maxim Kuvyrkov for various fixes.

@item

Andreas Krebbel for his work on Linux for s390 and s390x.

@item

Thorsten Kukuk for providing an implementation for NIS (YP) and NIS+,

securelevel 0, 1 and 2 and for the implementation for a caching daemon

for NSS (@file{nscd}).

@item

Akhilesh Kumar for various fixes to locales.

@item

Jeff Law for various fixes.

@item

Doug Lea for contributing the memory allocation functions

@code{malloc}, @code{realloc} and @code{free} and related

code.

@item

Chris Leonard for various fixes and enhancements to localedata.

@item

Stefan Liebler for various fixes.

@item

Hongjiu Lu for providing the support for a Linux 32-bit runtime

environment under x86-64 (x32), for porting to Linux on IA64, for

improved string functions, a framework for testing IFUNC

implementations, for implementing Intel Control-Flow Enforcement

Technology, and many bug fixes.

@item

Rafal Luzynski for contributing support for two grammatical forms of month

names, and for various fixes to locales.

@item

Luis Machado for optimized functions on PowerPC.

@item

David J. MacKenzie for his contribution to the @code{getopt}

function and writing the @file{tar.h} header.

@item

Greg McGary for adding runtime support for bounds checking.

@item

Roland McGrath for writing most of @theglibc{} originally, for his

work on the Hurd port, his direction as part of @theglibc{} steering

committee and as FSF Project Steward for @theglibc{}, and for many bug

fixes and reviewing of contributions.

@item

Allan McRae for various fixes.

@item

Jason Merrill for the port to the Sequent Symmetry running Dynix

version 3 (@code{i386-sequent-bsd}).

@item

Chris Metcalf for the port to Linux/Tile

(@code{tilegx-@var{anything}-linux} and

@code{tilepro-@var{anything}-linux}) and support for the generic Linux

kernel syscall interface used by several newer ports.

@item

David Miller for contributing the port to Linux/Sparc

(@code{sparc*-@var{anything}-linux}).

@item

Alan Modra for his improvements for Linux on PowerPC.

@item

David Mosberger-Tang for contributing the port to Linux/Alpha

(@code{alpha-@var{anything}-linux}).

@item

Wainer dos Santos Moschetta for various fixes to powerpc.

@item

Stephen Moshier for implementing some 128-bit long double format math

functions.

@item

Stephen Munroe for his port to Linux on PowerPC64

(@code{powerpc64-@var{anything}-linux}) and for adding optimized

implementations for PowerPC.

@item

Paul E. Murphy for various fixes on PowerPC and for implementing the IEEE

128-bit floating point type for PowerPC.

@item

Joseph S. Myers for numerous bug fixes for the libm functions, for

his maintainership of the ARM and MIPS architectures and the math

component, improving cross-compilation and cross-testing of

@theglibc{}, expanded coverage of conformtest, merging the ports/

subdirectory into the @glibcadj{} main repository and his direction as

FSF Project Steward for @theglibc{}.

@item

Marko Myllynen for various fixes.

@item

Szabolcs Nagy for various fixes.

@item

Will Newton for contributing some optimized string functions and pointer

encryption support for ARM and various fixes.

@item

Carlos O'Donell for his maintainership of the HPPA architecture, for

maintaining @theglibc{} web pages and wiki, for his direction as FSF

Project Steward for @theglibc{} and various bug fixes.

@item

Alexandre Oliva for adding TLS descriptors for LD and GD on x86 and

x86-64, for the am33 port, for completing the MIPS n64/n32/o32 multilib

port, for thread-safety, async-signal safety and async-cancellation

safety documentation in the manual, for his direction as FSF Project

Maintainer and for various fixes.

@item

Paul Pluzhnikov for various fixes.

@item

Marek Polacek for various fixes.

@item

Siddhesh Poyarekar for various fixes, an implementation of a framework for

performance benchmarking of functions and implementing the tunables

infrastructure.

@item

Tom Quinn for contributing the startup code to support SunOS shared

libraries and the port to SGI machines running Irix 4

(@code{mips-sgi-irix4}).

@item

Torvald Riegel for the implementation of new algorithms for semaphores,

pthread_rwlock and condition variables.

@item

Maciej W. Rozycki for MIPS fixes, support for ABSOLUTE symbols,

and various fixes.

@item

Pravin Satpute for writing sorting rules for some Indian languages.

@item

Douglas C. Schmidt for writing the quick sort function used as a

fallback by @code{qsort}.

@item

Will Schmidt for optimized string functions on PowerPC.

@item

Andreas Schwab for the port to Linux/m68k

(@code{m68k-@var{anything}-linux}), for his direction as part of

@theglibc{} steering committee, and for various bug fixes.

@item

Martin Schwidefsky for porting to Linux on s390

(@code{s390-@var{anything}-linux}) and s390x

(@code{s390x-@var{anything}-linux}).

@item

Thomas Schwinge for his contribution to Hurd and the SH architecture.

@item

Andrew Senkevich for contributing vector math function implementations for x86.

@item

Carlos Eduardo Seo for optimized functions on PowerPC.

@item

Arjun Shankar for testing and bug fixing.

@item

Marcus Shawcroft for contributing the AArch64 port.

@item

Franz Sirl for various fixes.

@item

Jes Sorensen for porting to Linux on IA64 (@code{ia64-@var{anything}-linux}).

@item

Rajalakshmi Srinivasaraghavan for various fixes and optimizations on PowerPC

and for implementing the IEEE 128-bit floating point type for PowerPC.

@item

Richard Stallman for his contribution to the @code{getopt} function.

@item

Alfred M. Szmidt for various fixes.

@item

Chung-Lin Tang for contributing the Nios II port.

@item

Ian Lance Taylor for contributing the port to the MIPS DECStation

running Ultrix 4 (@code{mips-dec-ultrix4}).

@item

Samuel Thibault for improving the Hurd port.

@item

Pino Toscano for various fixes.

@item

Tim Waugh for the implementation of the POSIX.2 @code{wordexp}

function family.

@item

Florian Weimer for his maintainership of the network component, for handling

of security issues, and for various fixes.

@item

Zack Weinberg for the @code{explicit_bzero} implementation and for various

fixes.

@item

Eric Youngdale for implementing versioning of objects on the symbol level.

@item

Adhemerval Zanella for optimized functions on PowerPC, ISO C threads support

and various fixes.

@end itemize

Some code in @theglibc{} comes from other projects and might be under

a different license:

@itemize @bullet

@item

The timezone support code is derived from the public-domain timezone

package by Arthur David Olson and his many contributors.

@item

Some of the support code for Mach is taken from Mach 3.0 by CMU;

the file @file{if_ppp.h} is also copyright by CMU, but under a different license;

see the file @file{LICENSES} for the text of the licenses.

@item

The random number generation functions @code{random}, @code{srandom},

@code{setstate} and @code{initstate}, which are also the basis for the

@code{rand} and @code{srand} functions, were written by Earl T. Cohen

for the University of California at Berkeley and are copyrighted by the

Regents of the University of California.  They have undergone minor

changes to fit into @theglibc{} and to fit the @w{ISO C} standard,

but the functional code is Berkeley's.@refill

@item

The Internet-related code (most of the @file{inet} subdirectory) and

several other miscellaneous functions and header files have been

included from 4.4 BSD with little or no modification.  The copying

permission notice for this code can be found in the file @file{LICENSES}

in the source distribution.

@item

The @code{getaddrinfo} and @code{getnameinfo} functions and supporting

code were written by Craig Metz; see the file @file{LICENSES} for

details on their licensing.

@item

The DNS resolver code is taken directly from BIND 8.2.3-T5B, which

includes copyrighted code from UC Berkeley and from Digital Equipment

Corporation.  See the file @file{LICENSES} for the text of the DEC license.

@item

The code to support Sun RPC is taken verbatim from Sun's

@w{@sc{rpcsrc-4.0}} distribution; see the file @file{LICENSES} for the

text of the license.

@item

The math functions are taken from @code{fdlibm-5.1} by Sun

Microsystems, as modified by J.T. Conklin, Ian Lance Taylor,

Ulrich Drepper, Andreas Schwab, and Roland McGrath.

@item

Many of the IEEE 64-bit double precision math functions

(in the @file{sysdeps/ieee754/dbl-64} subdirectory) come

from the IBM Accurate Mathematical Library, contributed by IBM.

@item

Many of the IA64 math functions are taken from a collection of

``Highly Optimized Mathematical Functions for Itanium'' that Intel

makes available under a free license; see the file @file{LICENSES} for

details.

@end itemize