1musl as a whole is licensed under the following standard MIT license:
2
3----------------------------------------------------------------------
4Copyright © 2005-2020 Rich Felker, et al.
5
6Permission is hereby granted, free of charge, to any person obtaining
7a copy of this software and associated documentation files (the
8"Software"), to deal in the Software without restriction, including
9without limitation the rights to use, copy, modify, merge, publish,
10distribute, sublicense, and/or sell copies of the Software, and to
11permit persons to whom the Software is furnished to do so, subject to
12the following conditions:
13
14The above copyright notice and this permission notice shall be
15included in all copies or substantial portions of the Software.
16
17THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
18EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
20IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
21CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
22TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
23SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24----------------------------------------------------------------------
25
26Authors/contributors include:
27
28A. Wilcox
29Ada Worcester
30Alex Dowad
31Alex Suykov
32Alexander Monakov
33Andre McCurdy
34Andrew Kelley
35Anthony G. Basile
36Aric Belsito
37Arvid Picciani
38Bartosz Brachaczek
39Benjamin Peterson
40Bobby Bingham
41Boris Brezillon
42Brent Cook
43Chris Spiegel
44Clément Vasseur
45Daniel Micay
46Daniel Sabogal
47Daurnimator
48David Carlier
49David Edelsohn
50Denys Vlasenko
51Dmitry Ivanov
52Dmitry V. Levin
53Drew DeVault
54Emil Renner Berthing
55Fangrui Song
56Felix Fietkau
57Felix Janda
58Gianluca Anzolin
59Hauke Mehrtens
60He X
61Hiltjo Posthuma
62Isaac Dunham
63Jaydeep Patil
64Jens Gustedt
65Jeremy Huntwork
66Jo-Philipp Wich
67Joakim Sindholt
68John Spencer
69Julien Ramseier
70Justin Cormack
71Kaarle Ritvanen
72Khem Raj
73Kylie McClain
74Leah Neukirchen
75Luca Barbato
76Luka Perkov
77M Farkas-Dyck (Strake)
78Mahesh Bodapati
79Markus Wichmann
80Masanori Ogino
81Michael Clark
82Michael Forney
83Mikhail Kremnyov
84Natanael Copa
85Nicholas J. Kain
86orc
87Pascal Cuoq
88Patrick Oppenlander
89Petr Hosek
90Petr Skocik
91Pierre Carrier
92Reini Urban
93Rich Felker
94Richard Pennington
95Ryan Fairfax
96Samuel Holland
97Segev Finer
98Shiz
99sin
100Solar Designer
101Stefan Kristiansson
102Stefan O'Rear
103Szabolcs Nagy
104Timo Teräs
105Trutz Behn
106Valentin Ochs
107Will Dietz
108William Haddon
109William Pitcock
110
111Portions of this software are derived from third-party works licensed
112under terms compatible with the above MIT license:
113
114The TRE regular expression implementation (src/regex/reg* and
115src/regex/tre*) is Copyright © 2001-2008 Ville Laurikari and licensed
116under a 2-clause BSD license (license text in the source files). The
117included version has been heavily modified by Rich Felker in 2012, in
118the interests of size, simplicity, and namespace cleanliness.
119
120Much of the math library code (src/math/* and src/complex/*) is
121Copyright © 1993,2004 Sun Microsystems or
122Copyright © 2003-2011 David Schultz or
123Copyright © 2003-2009 Steven G. Kargl or
124Copyright © 2003-2009 Bruce D. Evans or
125Copyright © 2008 Stephen L. Moshier or
126Copyright © 2017-2018 Arm Limited
127and labelled as such in comments in the individual source files. All
128have been licensed under extremely permissive terms.
129
130The ARM memcpy code (src/string/arm/memcpy.S) is Copyright © 2008
131The Android Open Source Project and is licensed under a two-clause BSD
132license. It was taken from Bionic libc, used on Android.
133
134The AArch64 memcpy and memset code (src/string/aarch64/*) are
135Copyright © 1999-2019, Arm Limited.
136
137The implementation of DES for crypt (src/crypt/crypt_des.c) is
138Copyright © 1994 David Burren. It is licensed under a BSD license.
139
140The implementation of blowfish crypt (src/crypt/crypt_blowfish.c) was
141originally written by Solar Designer and placed into the public
142domain. The code also comes with a fallback permissive license for use
143in jurisdictions that may not recognize the public domain.
144
145The smoothsort implementation (src/stdlib/qsort.c) is Copyright © 2011
146Valentin Ochs and is licensed under an MIT-style license.
147
148The x86_64 port was written by Nicholas J. Kain and is licensed under
149the standard MIT terms.
150
151The mips and microblaze ports were originally written by Richard
152Pennington for use in the ellcc project. The original code was adapted
153by Rich Felker for build system and code conventions during upstream
154integration. It is licensed under the standard MIT terms.
155
156The mips64 port was contributed by Imagination Technologies and is
157licensed under the standard MIT terms.
158
159The powerpc port was also originally written by Richard Pennington,
160and later supplemented and integrated by John Spencer. It is licensed
161under the standard MIT terms.
162
163All other files which have no copyright comments are original works
164produced specifically for use as part of this library, written either
165by Rich Felker, the main author of the library, or by one or more
166contibutors listed above. Details on authorship of individual files
167can be found in the git version control history of the project. The
168omission of copyright and license comments in each file is in the
169interest of source tree size.
170
171In addition, permission is hereby granted for all public header files
172(include/* and arch/*/bits/*) and crt files intended to be linked into
173applications (crt/*, ldso/dlstart.c, and arch/*/crt_arch.h) to omit
174the copyright notice and permission notice otherwise required by the
175license, and to use these files without any requirement of
176attribution. These files include substantial contributions from:
177
178Bobby Bingham
179John Spencer
180Nicholas J. Kain
181Rich Felker
182Richard Pennington
183Stefan Kristiansson
184Szabolcs Nagy
185
186all of whom have explicitly granted such permission.
187
188This file previously contained text expressing a belief that most of
189the files covered by the above exception were sufficiently trivial not
190to be subject to copyright, resulting in confusion over whether it
191negated the permissions granted in the license. In the spirit of
192permissive licensing, and of not having licensing issues being an
193obstacle to adoption, that text has been removed.