annotate COPYING @ 698:ee97c742d184 tip

Default branch is now named default on git as well as hg, in case we ever want to switch to mirroring in the other direction
author Chris Cannam
date Thu, 27 Aug 2020 15:58:43 +0100
parents 4018ee2fcb60
children
rev   line source
Chris@456 1 GNU GENERAL PUBLIC LICENSE
Chris@456 2 Version 2, June 1991
Chris@456 3
Chris@456 4 Copyright (C) 1989, 1991 Free Software Foundation, Inc.
Chris@456 5 675 Mass Ave, Cambridge, MA 02139, USA
Chris@456 6 Everyone is permitted to copy and distribute verbatim copies
Chris@456 7 of this license document, but changing it is not allowed.
Chris@456 8
Chris@456 9 Preamble
Chris@456 10
Chris@456 11 The licenses for most software are designed to take away your
Chris@456 12 freedom to share and change it. By contrast, the GNU General Public
Chris@456 13 License is intended to guarantee your freedom to share and change free
Chris@456 14 software--to make sure the software is free for all its users. This
Chris@456 15 General Public License applies to most of the Free Software
Chris@456 16 Foundation's software and to any other program whose authors commit to
Chris@456 17 using it. (Some other Free Software Foundation software is covered by
Chris@456 18 the GNU Library General Public License instead.) You can apply it to
Chris@456 19 your programs, too.
Chris@456 20
Chris@456 21 When we speak of free software, we are referring to freedom, not
Chris@456 22 price. Our General Public Licenses are designed to make sure that you
Chris@456 23 have the freedom to distribute copies of free software (and charge for
Chris@456 24 this service if you wish), that you receive source code or can get it
Chris@456 25 if you want it, that you can change the software or use pieces of it
Chris@456 26 in new free programs; and that you know you can do these things.
Chris@456 27
Chris@456 28 To protect your rights, we need to make restrictions that forbid
Chris@456 29 anyone to deny you these rights or to ask you to surrender the rights.
Chris@456 30 These restrictions translate to certain responsibilities for you if you
Chris@456 31 distribute copies of the software, or if you modify it.
Chris@456 32
Chris@456 33 For example, if you distribute copies of such a program, whether
Chris@456 34 gratis or for a fee, you must give the recipients all the rights that
Chris@456 35 you have. You must make sure that they, too, receive or can get the
Chris@456 36 source code. And you must show them these terms so they know their
Chris@456 37 rights.
Chris@456 38
Chris@456 39 We protect your rights with two steps: (1) copyright the software, and
Chris@456 40 (2) offer you this license which gives you legal permission to copy,
Chris@456 41 distribute and/or modify the software.
Chris@456 42
Chris@456 43 Also, for each author's protection and ours, we want to make certain
Chris@456 44 that everyone understands that there is no warranty for this free
Chris@456 45 software. If the software is modified by someone else and passed on, we
Chris@456 46 want its recipients to know that what they have is not the original, so
Chris@456 47 that any problems introduced by others will not reflect on the original
Chris@456 48 authors' reputations.
Chris@456 49
Chris@456 50 Finally, any free program is threatened constantly by software
Chris@456 51 patents. We wish to avoid the danger that redistributors of a free
Chris@456 52 program will individually obtain patent licenses, in effect making the
Chris@456 53 program proprietary. To prevent this, we have made it clear that any
Chris@456 54 patent must be licensed for everyone's free use or not licensed at all.
Chris@456 55
Chris@456 56 The precise terms and conditions for copying, distribution and
Chris@456 57 modification follow.
Chris@456 58
Chris@456 59 GNU GENERAL PUBLIC LICENSE
Chris@456 60 TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
Chris@456 61
Chris@456 62 0. This License applies to any program or other work which contains
Chris@456 63 a notice placed by the copyright holder saying it may be distributed
Chris@456 64 under the terms of this General Public License. The "Program", below,
Chris@456 65 refers to any such program or work, and a "work based on the Program"
Chris@456 66 means either the Program or any derivative work under copyright law:
Chris@456 67 that is to say, a work containing the Program or a portion of it,
Chris@456 68 either verbatim or with modifications and/or translated into another
Chris@456 69 language. (Hereinafter, translation is included without limitation in
Chris@456 70 the term "modification".) Each licensee is addressed as "you".
Chris@456 71
Chris@456 72 Activities other than copying, distribution and modification are not
Chris@456 73 covered by this License; they are outside its scope. The act of
Chris@456 74 running the Program is not restricted, and the output from the Program
Chris@456 75 is covered only if its contents constitute a work based on the
Chris@456 76 Program (independent of having been made by running the Program).
Chris@456 77 Whether that is true depends on what the Program does.
Chris@456 78
Chris@456 79 1. You may copy and distribute verbatim copies of the Program's
Chris@456 80 source code as you receive it, in any medium, provided that you
Chris@456 81 conspicuously and appropriately publish on each copy an appropriate
Chris@456 82 copyright notice and disclaimer of warranty; keep intact all the
Chris@456 83 notices that refer to this License and to the absence of any warranty;
Chris@456 84 and give any other recipients of the Program a copy of this License
Chris@456 85 along with the Program.
Chris@456 86
Chris@456 87 You may charge a fee for the physical act of transferring a copy, and
Chris@456 88 you may at your option offer warranty protection in exchange for a fee.
Chris@456 89
Chris@456 90 2. You may modify your copy or copies of the Program or any portion
Chris@456 91 of it, thus forming a work based on the Program, and copy and
Chris@456 92 distribute such modifications or work under the terms of Section 1
Chris@456 93 above, provided that you also meet all of these conditions:
Chris@456 94
Chris@456 95 a) You must cause the modified files to carry prominent notices
Chris@456 96 stating that you changed the files and the date of any change.
Chris@456 97
Chris@456 98 b) You must cause any work that you distribute or publish, that in
Chris@456 99 whole or in part contains or is derived from the Program or any
Chris@456 100 part thereof, to be licensed as a whole at no charge to all third
Chris@456 101 parties under the terms of this License.
Chris@456 102
Chris@456 103 c) If the modified program normally reads commands interactively
Chris@456 104 when run, you must cause it, when started running for such
Chris@456 105 interactive use in the most ordinary way, to print or display an
Chris@456 106 announcement including an appropriate copyright notice and a
Chris@456 107 notice that there is no warranty (or else, saying that you provide
Chris@456 108 a warranty) and that users may redistribute the program under
Chris@456 109 these conditions, and telling the user how to view a copy of this
Chris@456 110 License. (Exception: if the Program itself is interactive but
Chris@456 111 does not normally print such an announcement, your work based on
Chris@456 112 the Program is not required to print an announcement.)
Chris@456 113
Chris@456 114 These requirements apply to the modified work as a whole. If
Chris@456 115 identifiable sections of that work are not derived from the Program,
Chris@456 116 and can be reasonably considered independent and separate works in
Chris@456 117 themselves, then this License, and its terms, do not apply to those
Chris@456 118 sections when you distribute them as separate works. But when you
Chris@456 119 distribute the same sections as part of a whole which is a work based
Chris@456 120 on the Program, the distribution of the whole must be on the terms of
Chris@456 121 this License, whose permissions for other licensees extend to the
Chris@456 122 entire whole, and thus to each and every part regardless of who wrote it.
Chris@456 123
Chris@456 124 Thus, it is not the intent of this section to claim rights or contest
Chris@456 125 your rights to work written entirely by you; rather, the intent is to
Chris@456 126 exercise the right to control the distribution of derivative or
Chris@456 127 collective works based on the Program.
Chris@456 128
Chris@456 129 In addition, mere aggregation of another work not based on the Program
Chris@456 130 with the Program (or with a work based on the Program) on a volume of
Chris@456 131 a storage or distribution medium does not bring the other work under
Chris@456 132 the scope of this License.
Chris@456 133
Chris@456 134 3. You may copy and distribute the Program (or a work based on it,
Chris@456 135 under Section 2) in object code or executable form under the terms of
Chris@456 136 Sections 1 and 2 above provided that you also do one of the following:
Chris@456 137
Chris@456 138 a) Accompany it with the complete corresponding machine-readable
Chris@456 139 source code, which must be distributed under the terms of Sections
Chris@456 140 1 and 2 above on a medium customarily used for software interchange; or,
Chris@456 141
Chris@456 142 b) Accompany it with a written offer, valid for at least three
Chris@456 143 years, to give any third party, for a charge no more than your
Chris@456 144 cost of physically performing source distribution, a complete
Chris@456 145 machine-readable copy of the corresponding source code, to be
Chris@456 146 distributed under the terms of Sections 1 and 2 above on a medium
Chris@456 147 customarily used for software interchange; or,
Chris@456 148
Chris@456 149 c) Accompany it with the information you received as to the offer
Chris@456 150 to distribute corresponding source code. (This alternative is
Chris@456 151 allowed only for noncommercial distribution and only if you
Chris@456 152 received the program in object code or executable form with such
Chris@456 153 an offer, in accord with Subsection b above.)
Chris@456 154
Chris@456 155 The source code for a work means the preferred form of the work for
Chris@456 156 making modifications to it. For an executable work, complete source
Chris@456 157 code means all the source code for all modules it contains, plus any
Chris@456 158 associated interface definition files, plus the scripts used to
Chris@456 159 control compilation and installation of the executable. However, as a
Chris@456 160 special exception, the source code distributed need not include
Chris@456 161 anything that is normally distributed (in either source or binary
Chris@456 162 form) with the major components (compiler, kernel, and so on) of the
Chris@456 163 operating system on which the executable runs, unless that component
Chris@456 164 itself accompanies the executable.
Chris@456 165
Chris@456 166 If distribution of executable or object code is made by offering
Chris@456 167 access to copy from a designated place, then offering equivalent
Chris@456 168 access to copy the source code from the same place counts as
Chris@456 169 distribution of the source code, even though third parties are not
Chris@456 170 compelled to copy the source along with the object code.
Chris@456 171
Chris@456 172 4. You may not copy, modify, sublicense, or distribute the Program
Chris@456 173 except as expressly provided under this License. Any attempt
Chris@456 174 otherwise to copy, modify, sublicense or distribute the Program is
Chris@456 175 void, and will automatically terminate your rights under this License.
Chris@456 176 However, parties who have received copies, or rights, from you under
Chris@456 177 this License will not have their licenses terminated so long as such
Chris@456 178 parties remain in full compliance.
Chris@456 179
Chris@456 180 5. You are not required to accept this License, since you have not
Chris@456 181 signed it. However, nothing else grants you permission to modify or
Chris@456 182 distribute the Program or its derivative works. These actions are
Chris@456 183 prohibited by law if you do not accept this License. Therefore, by
Chris@456 184 modifying or distributing the Program (or any work based on the
Chris@456 185 Program), you indicate your acceptance of this License to do so, and
Chris@456 186 all its terms and conditions for copying, distributing or modifying
Chris@456 187 the Program or works based on it.
Chris@456 188
Chris@456 189 6. Each time you redistribute the Program (or any work based on the
Chris@456 190 Program), the recipient automatically receives a license from the
Chris@456 191 original licensor to copy, distribute or modify the Program subject to
Chris@456 192 these terms and conditions. You may not impose any further
Chris@456 193 restrictions on the recipients' exercise of the rights granted herein.
Chris@456 194 You are not responsible for enforcing compliance by third parties to
Chris@456 195 this License.
Chris@456 196
Chris@456 197 7. If, as a consequence of a court judgment or allegation of patent
Chris@456 198 infringement or for any other reason (not limited to patent issues),
Chris@456 199 conditions are imposed on you (whether by court order, agreement or
Chris@456 200 otherwise) that contradict the conditions of this License, they do not
Chris@456 201 excuse you from the conditions of this License. If you cannot
Chris@456 202 distribute so as to satisfy simultaneously your obligations under this
Chris@456 203 License and any other pertinent obligations, then as a consequence you
Chris@456 204 may not distribute the Program at all. For example, if a patent
Chris@456 205 license would not permit royalty-free redistribution of the Program by
Chris@456 206 all those who receive copies directly or indirectly through you, then
Chris@456 207 the only way you could satisfy both it and this License would be to
Chris@456 208 refrain entirely from distribution of the Program.
Chris@456 209
Chris@456 210 If any portion of this section is held invalid or unenforceable under
Chris@456 211 any particular circumstance, the balance of the section is intended to
Chris@456 212 apply and the section as a whole is intended to apply in other
Chris@456 213 circumstances.
Chris@456 214
Chris@456 215 It is not the purpose of this section to induce you to infringe any
Chris@456 216 patents or other property right claims or to contest validity of any
Chris@456 217 such claims; this section has the sole purpose of protecting the
Chris@456 218 integrity of the free software distribution system, which is
Chris@456 219 implemented by public license practices. Many people have made
Chris@456 220 generous contributions to the wide range of software distributed
Chris@456 221 through that system in reliance on consistent application of that
Chris@456 222 system; it is up to the author/donor to decide if he or she is willing
Chris@456 223 to distribute software through any other system and a licensee cannot
Chris@456 224 impose that choice.
Chris@456 225
Chris@456 226 This section is intended to make thoroughly clear what is believed to
Chris@456 227 be a consequence of the rest of this License.
Chris@456 228
Chris@456 229 8. If the distribution and/or use of the Program is restricted in
Chris@456 230 certain countries either by patents or by copyrighted interfaces, the
Chris@456 231 original copyright holder who places the Program under this License
Chris@456 232 may add an explicit geographical distribution limitation excluding
Chris@456 233 those countries, so that distribution is permitted only in or among
Chris@456 234 countries not thus excluded. In such case, this License incorporates
Chris@456 235 the limitation as if written in the body of this License.
Chris@456 236
Chris@456 237 9. The Free Software Foundation may publish revised and/or new versions
Chris@456 238 of the General Public License from time to time. Such new versions will
Chris@456 239 be similar in spirit to the present version, but may differ in detail to
Chris@456 240 address new problems or concerns.
Chris@456 241
Chris@456 242 Each version is given a distinguishing version number. If the Program
Chris@456 243 specifies a version number of this License which applies to it and "any
Chris@456 244 later version", you have the option of following the terms and conditions
Chris@456 245 either of that version or of any later version published by the Free
Chris@456 246 Software Foundation. If the Program does not specify a version number of
Chris@456 247 this License, you may choose any version ever published by the Free Software
Chris@456 248 Foundation.
Chris@456 249
Chris@456 250 10. If you wish to incorporate parts of the Program into other free
Chris@456 251 programs whose distribution conditions are different, write to the author
Chris@456 252 to ask for permission. For software which is copyrighted by the Free
Chris@456 253 Software Foundation, write to the Free Software Foundation; we sometimes
Chris@456 254 make exceptions for this. Our decision will be guided by the two goals
Chris@456 255 of preserving the free status of all derivatives of our free software and
Chris@456 256 of promoting the sharing and reuse of software generally.
Chris@456 257
Chris@456 258 NO WARRANTY
Chris@456 259
Chris@456 260 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
Chris@456 261 FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
Chris@456 262 OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
Chris@456 263 PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
Chris@456 264 OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
Chris@456 265 MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS
Chris@456 266 TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE
Chris@456 267 PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
Chris@456 268 REPAIR OR CORRECTION.
Chris@456 269
Chris@456 270 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
Chris@456 271 WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
Chris@456 272 REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
Chris@456 273 INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
Chris@456 274 OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
Chris@456 275 TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
Chris@456 276 YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
Chris@456 277 PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
Chris@456 278 POSSIBILITY OF SUCH DAMAGES.
Chris@456 279
Chris@456 280 END OF TERMS AND CONDITIONS