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author | Sergey Poznyakoff <gray@gnu.org.ua> | 2012-01-19 11:43:40 +0200 |
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committer | Sergey Poznyakoff <gray@gnu.org.ua> | 2012-01-19 11:43:40 +0200 |
commit | e91739e2158a5a6101fde65923d01eddf26abd2a (patch) | |
tree | f2b33346e1b0b8a9f652ee8475b76b7e4e42a28e /COPYING | |
download | gcide-e91739e2158a5a6101fde65923d01eddf26abd2a.tar.gz gcide-e91739e2158a5a6101fde65923d01eddf26abd2a.tar.bz2 |
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1 | GNU GENERAL PUBLIC LICENSE | ||
2 | Version 2, June 1991 | ||
3 | |||
4 | Copyright (C) 1989, 1991 Free Software Foundation, Inc. | ||
5 | 675 Mass Ave, Cambridge, MA 02139, USA | ||
6 | 617-542-5942 | ||
7 | Everyone is permitted to copy and distribute verbatim copies | ||
8 | of this license document, but changing it is not allowed. | ||
9 | |||
10 | Preamble | ||
11 | |||
12 | The licenses for most software are designed to take away your | ||
13 | freedom to share and change it. By contrast, the GNU General Public | ||
14 | License is intended to guarantee your freedom to share and change free | ||
15 | software--to make sure the software is free for all its users. This | ||
16 | General Public License applies to most of the Free Software | ||
17 | Foundation's software and to any other program whose authors commit to | ||
18 | using it. (Some other Free Software Foundation software is covered by | ||
19 | the GNU Library General Public License instead.) You can apply it to | ||
20 | your programs, too. | ||
21 | |||
22 | When we speak of free software, we are referring to freedom, not | ||
23 | price. Our General Public Licenses are designed to make sure that you | ||
24 | have the freedom to distribute copies of free software (and charge for | ||
25 | this service if you wish), that you receive source code or can get it | ||
26 | if you want it, that you can change the software or use pieces of it | ||
27 | in new free programs; and that you know you can do these things. | ||
28 | |||
29 | To protect your rights, we need to make restrictions that forbid | ||
30 | anyone to deny you these rights or to ask you to surrender the rights. | ||
31 | These restrictions translate to certain responsibilities for you if you | ||
32 | distribute copies of the software, or if you modify it. | ||
33 | |||
34 | For example, if you distribute copies of such a program, whether | ||
35 | gratis or for a fee, you must give the recipients all the rights that | ||
36 | you have. You must make sure that they, too, receive or can get the | ||
37 | source code. And you must show them these terms so they know their | ||
38 | rights. | ||
39 | |||
40 | We protect your rights with two steps: (1) copyright the software, and | ||
41 | (2) offer you this license which gives you legal permission to copy, | ||
42 | distribute and/or modify the software. | ||
43 | |||
44 | Also, for each author's protection and ours, we want to make certain | ||
45 | that everyone understands that there is no warranty for this free | ||
46 | software. If the software is modified by someone else and passed on, we | ||
47 | want its recipients to know that what they have is not the original, so | ||
48 | that any problems introduced by others will not reflect on the original | ||
49 | authors' reputations. | ||
50 | |||
51 | Finally, any free program is threatened constantly by software | ||
52 | patents. We wish to avoid the danger that redistributors of a free | ||
53 | program will individually obtain patent licenses, in effect making the | ||
54 | program proprietary. To prevent this, we have made it clear that any | ||
55 | patent must be licensed for everyone's free use or not licensed at all. | ||
56 | |||
57 | The precise terms and conditions for copying, distribution and | ||
58 | modification follow. | ||
59 | |||
60 | GNU GENERAL PUBLIC LICENSE | ||
61 | TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION | ||
62 | |||
63 | 0. This License applies to any program or other work which contains | ||
64 | a notice placed by the copyright holder saying it may be distributed | ||
65 | under the terms of this General Public License. The "Program", below, | ||
66 | refers to any such program or work, and a "work based on the Program" | ||
67 | means either the Program or any derivative work under copyright law: | ||
68 | that is to say, a work containing the Program or a portion of it, | ||
69 | either verbatim or with modifications and/or translated into another | ||
70 | language. (Hereinafter, translation is included without limitation in | ||
71 | the term "modification".) Each licensee is addressed as "you". | ||
72 | |||
73 | Activities other than copying, distribution and modification are not | ||
74 | covered by this License; they are outside its scope. The act of | ||
75 | running the Program is not restricted, and the output from the Program | ||
76 | is covered only if its contents constitute a work based on the | ||
77 | Program (independent of having been made by running the Program). | ||
78 | Whether that is true depends on what the Program does. | ||
79 | |||
80 | 1. You may copy and distribute verbatim copies of the Program's | ||
81 | source code as you receive it, in any medium, provided that you | ||
82 | conspicuously and appropriately publish on each copy an appropriate | ||
83 | copyright notice and disclaimer of warranty; keep intact all the | ||
84 | notices that refer to this License and to the absence of any warranty; | ||
85 | and give any other recipients of the Program a copy of this License | ||
86 | along with the Program. | ||
87 | |||
88 | You may charge a fee for the physical act of transferring a copy, and | ||
89 | you may at your option offer warranty protection in exchange for a fee. | ||
90 | |||
91 | 2. You may modify your copy or copies of the Program or any portion | ||
92 | of it, thus forming a work based on the Program, and copy and | ||
93 | distribute such modifications or work under the terms of Section 1 | ||
94 | above, provided that you also meet all of these conditions: | ||
95 | |||
96 | a) You must cause the modified files to carry prominent notices | ||
97 | stating that you changed the files and the date of any change. | ||
98 | |||
99 | b) You must cause any work that you distribute or publish, that in | ||
100 | whole or in part contains or is derived from the Program or any | ||
101 | part thereof, to be licensed as a whole at no charge to all third | ||
102 | parties under the terms of this License. | ||
103 | |||
104 | c) If the modified program normally reads commands interactively | ||
105 | when run, you must cause it, when started running for such | ||
106 | interactive use in the most ordinary way, to print or display an | ||
107 | announcement including an appropriate copyright notice and a | ||
108 | notice that there is no warranty (or else, saying that you provide | ||
109 | a warranty) and that users may redistribute the program under | ||
110 | these conditions, and telling the user how to view a copy of this | ||
111 | License. (Exception: if the Program itself is interactive but | ||
112 | does not normally print such an announcement, your work based on | ||
113 | the Program is not required to print an announcement.) | ||
114 | |||
115 | These requirements apply to the modified work as a whole. If | ||
116 | identifiable sections of that work are not derived from the Program, | ||
117 | and can be reasonably considered independent and separate works in | ||
118 | themselves, then this License, and its terms, do not apply to those | ||
119 | sections when you distribute them as separate works. But when you | ||
120 | distribute the same sections as part of a whole which is a work based | ||
121 | on the Program, the distribution of the whole must be on the terms of | ||
122 | this License, whose permissions for other licensees extend to the | ||
123 | entire whole, and thus to each and every part regardless of who wrote it. | ||
124 | |||
125 | Thus, it is not the intent of this section to claim rights or contest | ||
126 | your rights to work written entirely by you; rather, the intent is to | ||
127 | exercise the right to control the distribution of derivative or | ||
128 | collective works based on the Program. | ||
129 | |||
130 | In addition, mere aggregation of another work not based on the Program | ||
131 | with the Program (or with a work based on the Program) on a volume of | ||
132 | a storage or distribution medium does not bring the other work under | ||
133 | the scope of this License. | ||
134 | |||
135 | 3. You may copy and distribute the Program (or a work based on it, | ||
136 | under Section 2) in object code or executable form under the terms of | ||
137 | Sections 1 and 2 above provided that you also do one of the following: | ||
138 | |||
139 | a) Accompany it with the complete corresponding machine-readable | ||
140 | source code, which must be distributed under the terms of Sections | ||
141 | 1 and 2 above on a medium customarily used for software interchange; or, | ||
142 | |||
143 | b) Accompany it with a written offer, valid for at least three | ||
144 | years, to give any third party, for a charge no more than your | ||
145 | cost of physically performing source distribution, a complete | ||
146 | machine-readable copy of the corresponding source code, to be | ||
147 | distributed under the terms of Sections 1 and 2 above on a medium | ||
148 | customarily used for software interchange; or, | ||
149 | |||
150 | c) Accompany it with the information you received as to the offer | ||
151 | to distribute corresponding source code. (This alternative is | ||
152 | allowed only for noncommercial distribution and only if you | ||
153 | received the program in object code or executable form with such | ||
154 | an offer, in accord with Subsection b above.) | ||
155 | |||
156 | The source code for a work means the preferred form of the work for | ||
157 | making modifications to it. For an executable work, complete source | ||
158 | code means all the source code for all modules it contains, plus any | ||
159 | associated interface definition files, plus the scripts used to | ||
160 | control compilation and installation of the executable. However, as a | ||
161 | special exception, the source code distributed need not include | ||
162 | anything that is normally distributed (in either source or binary | ||
163 | form) with the major components (compiler, kernel, and so on) of the | ||
164 | operating system on which the executable runs, unless that component | ||
165 | itself accompanies the executable. | ||
166 | |||
167 | If distribution of executable or object code is made by offering | ||
168 | access to copy from a designated place, then offering equivalent | ||
169 | access to copy the source code from the same place counts as | ||
170 | distribution of the source code, even though third parties are not | ||
171 | compelled to copy the source along with the object code. | ||
172 | |||
173 | 4. You may not copy, modify, sublicense, or distribute the Program | ||
174 | except as expressly provided under this License. Any attempt | ||
175 | otherwise to copy, modify, sublicense or distribute the Program is | ||
176 | void, and will automatically terminate your rights under this License. | ||
177 | However, parties who have received copies, or rights, from you under | ||
178 | this License will not have their licenses terminated so long as such | ||
179 | parties remain in full compliance. | ||
180 | |||
181 | 5. You are not required to accept this License, since you have not | ||
182 | signed it. However, nothing else grants you permission to modify or | ||
183 | distribute the Program or its derivative works. These actions are | ||
184 | prohibited by law if you do not accept this License. Therefore, by | ||
185 | modifying or distributing the Program (or any work based on the | ||
186 | Program), you indicate your acceptance of this License to do so, and | ||
187 | all its terms and conditions for copying, distributing or modifying | ||
188 | the Program or works based on it. | ||
189 | |||
190 | 6. Each time you redistribute the Program (or any work based on the | ||
191 | Program), the recipient automatically receives a license from the | ||
192 | original licensor to copy, distribute or modify the Program subject to | ||
193 | these terms and conditions. You may not impose any further | ||
194 | restrictions on the recipients' exercise of the rights granted herein. | ||
195 | You are not responsible for enforcing compliance by third parties to | ||
196 | this License. | ||
197 | |||
198 | 7. If, as a consequence of a court judgment or allegation of patent | ||
199 | infringement or for any other reason (not limited to patent issues), | ||
200 | conditions are imposed on you (whether by court order, agreement or | ||
201 | otherwise) that contradict the conditions of this License, they do not | ||
202 | excuse you from the conditions of this License. If you cannot | ||
203 | distribute so as to satisfy simultaneously your obligations under this | ||
204 | License and any other pertinent obligations, then as a consequence you | ||
205 | may not distribute the Program at all. For example, if a patent | ||
206 | license would not permit royalty-free redistribution of the Program by | ||
207 | all those who receive copies directly or indirectly through you, then | ||
208 | the only way you could satisfy both it and this License would be to | ||
209 | refrain entirely from distribution of the Program. | ||
210 | |||
211 | If any portion of this section is held invalid or unenforceable under | ||
212 | any particular circumstance, the balance of the section is intended to | ||
213 | apply and the section as a whole is intended to apply in other | ||
214 | circumstances. | ||
215 | |||
216 | It is not the purpose of this section to induce you to infringe any | ||
217 | patents or other property right claims or to contest validity of any | ||
218 | such claims; this section has the sole purpose of protecting the | ||
219 | integrity of the free software distribution system, which is | ||
220 | implemented by public license practices. Many people have made | ||
221 | generous contributions to the wide range of software distributed | ||
222 | through that system in reliance on consistent application of that | ||
223 | system; it is up to the author/donor to decide if he or she is willing | ||
224 | to distribute software through any other system and a licensee cannot | ||
225 | impose that choice. | ||
226 | |||
227 | This section is intended to make thoroughly clear what is believed to | ||
228 | be a consequence of the rest of this License. | ||