1 Copyright (C) 1998-2014 Ivo Timmermans, Guus Sliepen and others.
2 See the AUTHORS file for a complete list.
4 This program is free software; you can redistribute it and/or modify it under
5 the terms of the GNU General Public License as published by the Free Software
6 Foundation; either version 2 of the License, or (at your option) any later
10 GNU GENERAL PUBLIC LICENSE
13 Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
14 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
15 Everyone is permitted to copy and distribute verbatim copies
16 of this license document, but changing it is not allowed.
20 The licenses for most software are designed to take away your
21 freedom to share and change it. By contrast, the GNU General Public
22 License is intended to guarantee your freedom to share and change free
23 software--to make sure the software is free for all its users. This
24 General Public License applies to most of the Free Software
25 Foundation's software and to any other program whose authors commit to
26 using it. (Some other Free Software Foundation software is covered by
27 the GNU Lesser General Public License instead.) You can apply it to
30 When we speak of free software, we are referring to freedom, not
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40 distribute copies of the software, or if you modify it.
42 For example, if you distribute copies of such a program, whether
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68 GNU GENERAL PUBLIC LICENSE
69 TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
71 0. This License applies to any program or other work which contains
72 a notice placed by the copyright holder saying it may be distributed
73 under the terms of this General Public License. The "Program", below,
74 refers to any such program or work, and a "work based on the Program"
75 means either the Program or any derivative work under copyright law:
76 that is to say, a work containing the Program or a portion of it,
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79 the term "modification".) Each licensee is addressed as "you".
81 Activities other than copying, distribution and modification are not
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83 running the Program is not restricted, and the output from the Program
84 is covered only if its contents constitute a work based on the
85 Program (independent of having been made by running the Program).
86 Whether that is true depends on what the Program does.
88 1. You may copy and distribute verbatim copies of the Program's
89 source code as you receive it, in any medium, provided that you
90 conspicuously and appropriately publish on each copy an appropriate
91 copyright notice and disclaimer of warranty; keep intact all the
92 notices that refer to this License and to the absence of any warranty;
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94 along with the Program.
96 You may charge a fee for the physical act of transferring a copy, and
97 you may at your option offer warranty protection in exchange for a fee.
99 2. You may modify your copy or copies of the Program or any portion
100 of it, thus forming a work based on the Program, and copy and
101 distribute such modifications or work under the terms of Section 1
102 above, provided that you also meet all of these conditions:
104 a) You must cause the modified files to carry prominent notices
105 stating that you changed the files and the date of any change.
107 b) You must cause any work that you distribute or publish, that in
108 whole or in part contains or is derived from the Program or any
109 part thereof, to be licensed as a whole at no charge to all third
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112 c) If the modified program normally reads commands interactively
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114 interactive use in the most ordinary way, to print or display an
115 announcement including an appropriate copyright notice and a
116 notice that there is no warranty (or else, saying that you provide
117 a warranty) and that users may redistribute the program under
118 these conditions, and telling the user how to view a copy of this
119 License. (Exception: if the Program itself is interactive but
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121 the Program is not required to print an announcement.)
123 These requirements apply to the modified work as a whole. If
124 identifiable sections of that work are not derived from the Program,
125 and can be reasonably considered independent and separate works in
126 themselves, then this License, and its terms, do not apply to those
127 sections when you distribute them as separate works. But when you
128 distribute the same sections as part of a whole which is a work based
129 on the Program, the distribution of the whole must be on the terms of
130 this License, whose permissions for other licensees extend to the
131 entire whole, and thus to each and every part regardless of who wrote it.
133 Thus, it is not the intent of this section to claim rights or contest
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138 In addition, mere aggregation of another work not based on the Program
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143 3. You may copy and distribute the Program (or a work based on it,
144 under Section 2) in object code or executable form under the terms of
145 Sections 1 and 2 above provided that you also do one of the following:
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164 The source code for a work means the preferred form of the work for
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178 distribution of the source code, even though third parties are not
179 compelled to copy the source along with the object code.
181 4. You may not copy, modify, sublicense, or distribute the Program
182 except as expressly provided under this License. Any attempt
183 otherwise to copy, modify, sublicense or distribute the Program is
184 void, and will automatically terminate your rights under this License.
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186 this License will not have their licenses terminated so long as such
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189 5. You are not required to accept this License, since you have not
190 signed it. However, nothing else grants you permission to modify or
191 distribute the Program or its derivative works. These actions are
192 prohibited by law if you do not accept this License. Therefore, by
193 modifying or distributing the Program (or any work based on the
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196 the Program or works based on it.
198 6. Each time you redistribute the Program (or any work based on the
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200 original licensor to copy, distribute or modify the Program subject to
201 these terms and conditions. You may not impose any further
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203 You are not responsible for enforcing compliance by third parties to
206 7. If, as a consequence of a court judgment or allegation of patent
207 infringement or for any other reason (not limited to patent issues),
208 conditions are imposed on you (whether by court order, agreement or
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210 excuse you from the conditions of this License. If you cannot
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212 License and any other pertinent obligations, then as a consequence you
213 may not distribute the Program at all. For example, if a patent
214 license would not permit royalty-free redistribution of the Program by
215 all those who receive copies directly or indirectly through you, then
216 the only way you could satisfy both it and this License would be to
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219 If any portion of this section is held invalid or unenforceable under
220 any particular circumstance, the balance of the section is intended to
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224 It is not the purpose of this section to induce you to infringe any
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235 This section is intended to make thoroughly clear what is believed to
236 be a consequence of the rest of this License.
238 8. If the distribution and/or use of the Program is restricted in
239 certain countries either by patents or by copyrighted interfaces, the
240 original copyright holder who places the Program under this License
241 may add an explicit geographical distribution limitation excluding
242 those countries, so that distribution is permitted only in or among
243 countries not thus excluded. In such case, this License incorporates
244 the limitation as if written in the body of this License.
246 9. The Free Software Foundation may publish revised and/or new versions
247 of the General Public License from time to time. Such new versions will
248 be similar in spirit to the present version, but may differ in detail to
249 address new problems or concerns.
251 Each version is given a distinguishing version number. If the Program
252 specifies a version number of this License which applies to it and "any
253 later version", you have the option of following the terms and conditions
254 either of that version or of any later version published by the Free
255 Software Foundation. If the Program does not specify a version number of
256 this License, you may choose any version ever published by the Free Software
259 10. If you wish to incorporate parts of the Program into other free
260 programs whose distribution conditions are different, write to the author
261 to ask for permission. For software which is copyrighted by the Free
262 Software Foundation, write to the Free Software Foundation; we sometimes
263 make exceptions for this. Our decision will be guided by the two goals
264 of preserving the free status of all derivatives of our free software and
265 of promoting the sharing and reuse of software generally.
269 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
270 FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
271 OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
272 PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
273 OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
274 MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS
275 TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE
276 PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
277 REPAIR OR CORRECTION.
279 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
280 WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
281 REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
282 INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
283 OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
284 TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
285 YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
286 PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
287 POSSIBILITY OF SUCH DAMAGES.
289 END OF TERMS AND CONDITIONS