The GNU C library was written originally by Roland McGrath, and is
currently maintained by Ulrich Drepper. Some parts of the library were
contributed or worked on by other people.
The getopt function and related code was written by
Richard Stallman, David J. MacKenzie, and Roland McGrath.
The merge sort function qsort was written by Michael J. Haertel.
The quick sort function used as a fallback by qsort was written
by Douglas C. Schmidt.
The memory allocation functions malloc, realloc and
free and related code were written by Michael J. Haertel,
Wolfram Gloger, and Doug Lea.
Fast implementations of many of the string functions (memcpy,
strlen, etc.) were written by Torbjörn Granlund.
The tar.h header file was written by David J. MacKenzie.
The port to the MIPS DECStation running Ultrix 4
(mips-dec-ultrix4)
was contributed by Brendan Kehoe and Ian Lance Taylor.
The DES encryption function crypt and related functions were
contributed by Michael Glad.
The ftw and nftw functions were contributed by Ulrich Drepper.
The startup code to support SunOS shared libraries was contributed by
Tom Quinn.
The mktime function was contributed by Paul Eggert.
The port to the Sequent Symmetry running Dynix version 3
(i386-sequent-bsd) was contributed by Jason Merrill.
The timezone support code is derived from the public-domain timezone
package by Arthur David Olson and his many contributors.
The port to the DEC Alpha running OSF/1 (alpha-dec-osf1) was
contributed by Brendan Kehoe, using some code written by Roland McGrath.
The port to SGI machines running Irix 4 (mips-sgi-irix4) was
contributed by Tom Quinn.
The port of the Mach and Hurd code to the MIPS architecture
(mips-anything-gnu) was contributed by Kazumoto Kojima.
The floating-point printing function used by printf and friends
and the floating-point reading function used by scanf,
strtod and friends were written by Ulrich Drepper. The
multi-precision integer functions used in those functions are taken from
GNU MP, which was contributed by Torbjörn Granlund.
The internationalization support in the library, and the support
programs locale and localedef, were written by Ulrich
Drepper. Ulrich Drepper adapted the support code for message catalogs
(libintl.h, etc.) from the GNU gettext package, which he
also wrote. He also contributed the catgets support and the
entire suite of multi-byte and wide-character support functions
(wctype.h, wchar.h, etc.).
The implementations of the nsswitch.conf mechanism and the files
and DNS backends for it were designed and written by Ulrich Drepper and
Roland McGrath, based on a backend interface defined by Peter Eriksson.
The port to Linux i386/ELF (i386-anything-linux) was
contributed by Ulrich Drepper, based in large part on work done in
Hongjiu Lu's Linux version of the GNU C Library.
The port to Linux/m68k (m68k-anything-linux) was
contributed by Andreas Schwab.
The ports to Linux/ARM (arm-ANYTHING-linuxaout) and ARM
standalone (arm-ANYTHING-none), as well as parts of the
IPv6 support code, were contributed by Philip Blundell.
Richard Henderson contributed the ELF dynamic linking code and other
support for the Alpha processor.
David Mosberger-Tang contributed the port to Linux/Alpha
(alpha-anything-linux).
The port to Linux on PowerPC (powerpc-anything-linux)
was contributed by Geoffrey Keating.
Miles Bader wrote the argp argument-parsing package, and the argz/envz
interfaces.
Stephen R. van den Berg contributed a highly-optimized strstr function.
Ulrich Drepper contributed the hsearch and drand48
families of functions; reentrant `..._r' versions of the
random family; System V shared memory and IPC support code; and
several highly-optimized string functions for ix86 processors.
The math functions are taken from fdlibm-5.1 by Sun
Microsystems, as modified by J.T. Conklin, Ian Lance Taylor,
Ulrich Drepper, Andreas Schwab, and Roland McGrath.
The libio library used to implement stdio functions on
some platforms was written by Per Bothner and modified by Ulrich Drepper.
Eric Youngdale and Ulrich Drepper implemented versioning of objects on
symbol level.
Thorsten Kukuk provided an implementation for NIS (YP) and NIS+,
securelevel 0, 1 and 2.
Andreas Jaeger provided a test suite for the math library.
Mark Kettenis implemented the utmpx interface and an utmp daemon.
Ulrich Drepper added character conversion functions (iconv).
Thorsten Kukuk provided an implementation for a caching daemon for NSS
(nscd).
Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
Mark Kettenis provided a Hesiod NSS module.
The Internet-related code (most of the inet subdirectory) and
several other miscellaneous functions and header files have been
included from 4.4 BSD with little or no modification.
All code incorporated from 4.4 BSD is under the following copyright:
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
[This condition was removed.]
Neither the name of the University nor the names of its contributors
may be used to endorse or promote products derived from this software
without specific prior written permission.
this software is provided by the regents and contributors “as is” and
any express or implied warranties, including, but not limited to, the
implied warranties of merchantability and fitness for a particular purpose
are disclaimed. in no event shall the regents or contributors be liable
for any direct, indirect, incidental, special, exemplary, or consequential
damages (including, but not limited to, procurement of substitute goods
or services; loss of use, data, or profits; or business interruption)
however caused and on any theory of liability, whether in contract, strict
liability, or tort (including negligence or otherwise) arising in any way
out of the use of this software, even if advised of the possibility of
such damage.
The random number generation functions random, srandom,
setstate and initstate, which are also the basis for the
rand and 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 the GNU C library and to fit the ISO C standard,
but the functional code is Berkeley's.
The DNS resolver code is taken directly from BIND 4.9.5, which is
under both the Berkeley copyright above and also:
Permission to use, copy, modify, and distribute this software for any
purpose with or without fee is hereby granted, provided that the above
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the software is provided “as is” and digital equipment corp.
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with the use or performance of this software.
The code to support Sun RPC is taken verbatim from Sun's
rpcsrc-4.0 distribution, and is covered by this copyright:
Sun RPC is a product of Sun Microsystems, Inc. and is provided for
unrestricted use provided that this legend is included on all tape media
and as a part of the software program in whole or part. Users may copy
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Some of the support code for Mach is taken from Mach 3.0 by CMU,
and is under the following copyright terms:
Permission to use, copy, modify and distribute this software and its
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carnegie mellon allows free use of this software in its “as is”
condition. carnegie mellon disclaims any liability of any kind for
any damages whatsoever resulting from the use of this software.
Carnegie Mellon requests users of this software to return to
Software Distribution Coordinator
School of Computer Science
Carnegie Mellon University
Pittsburgh PA 15213-3890
or [email protected] any improvements or
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redistribute these changes.
The code for the database library libdb comes from the 2.3
release of Berkeley DB. That code is under the same copyright as 4.4 BSD
and also:
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
Redistributions in any form must be accompanied by information on
how to obtain complete source code for the DB software and any
accompanying software that uses the DB software. The source code
must either be included in the distribution or be available for no
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freely redistributable under reasonable conditions. For an
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modules it contains. It does not mean source code for modules or
files that typically accompany the operating system on which the
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header files.
this software is provided by sleepycat software “as is” and
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for any direct, indirect, incidental, special, exemplary, or consequential
damages (including, but not limited to, procurement of substitute goods
or services; loss of use, data, or profits; or business interruption)
however caused and on any theory of liability, whether in contract, strict
liability, or tort (including negligence or otherwise) arising in any way
out of the use of this software, even if advised of the possibility of
such damage.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
All advertising materials mentioning features or use of this software
must display the following acknowledgement:
This product includes software developed by Harvard University
and its contributors.
Neither the name of the University nor the names of its contributors
may be used to endorse or promote products derived from this software
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this software is provided by harvard and its contributors “as is” and
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implied warranties of merchantability and fitness for a particular purpose
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for any direct, indirect, incidental, special, exemplary, or consequential
damages (including, but not limited to, procurement of substitute goods
or services; loss of use, data, or profits; or business interruption)
however caused and on any theory of liability, whether in contract, strict
liability, or tort (including negligence or otherwise) arising in any way
out of the use of this software, even if advised of the possibility of
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