| 1 | |
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| 2 | GNU LESSER GENERAL PUBLIC LICENSE |
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| 3 | TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION |
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| 4 | |
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| 5 | 0. This License Agreement applies to any software library or other |
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| 6 | program which contains a notice placed by the copyright holder or |
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| 7 | other authorized party saying it may be distributed under the terms of |
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| 8 | this Lesser General Public License (also called "this License"). |
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| 9 | Each licensee is addressed as "you". |
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| 10 | |
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| 11 | A "library" means a collection of software functions and/or data |
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| 12 | prepared so as to be conveniently linked with application programs |
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| 13 | (which use some of those functions and data) to form executables. |
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| 14 | |
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| 15 | The "Library", below, refers to any such software library or work |
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| 16 | which has been distributed under these terms. A "work based on the |
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| 17 | Library" means either the Library or any derivative work under |
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| 18 | copyright law: that is to say, a work containing the Library or a |
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| 19 | portion of it, either verbatim or with modifications and/or translated |
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| 20 | straightforwardly into another language. (Hereinafter, translation is |
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| 21 | included without limitation in the term "modification".) |
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| 22 | |
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| 23 | "Source code" for a work means the preferred form of the work for |
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| 24 | making modifications to it. For a library, complete source code means |
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| 25 | all the source code for all modules it contains, plus any associated |
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| 26 | interface definition files, plus the scripts used to control compilation |
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| 27 | and installation of the library. |
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| 28 | |
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| 29 | Activities other than copying, distribution and modification are not |
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| 30 | covered by this License; they are outside its scope. The act of |
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| 31 | running a program using the Library is not restricted, and output from |
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| 32 | such a program is covered only if its contents constitute a work based |
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| 33 | on the Library (independent of the use of the Library in a tool for |
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| 34 | writing it). Whether that is true depends on what the Library does |
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| 35 | and what the program that uses the Library does. |
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| 36 | |
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| 37 | 1. You may copy and distribute verbatim copies of the Library's |
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| 38 | complete source code as you receive it, in any medium, provided that |
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| 39 | you conspicuously and appropriately publish on each copy an |
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| 40 | appropriate copyright notice and disclaimer of warranty; keep intact |
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| 41 | all the notices that refer to this License and to the absence of any |
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| 42 | warranty; and distribute a copy of this License along with the |
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| 43 | Library. |
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| 44 | |
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| 45 | You may charge a fee for the physical act of transferring a copy, |
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| 46 | and you may at your option offer warranty protection in exchange for a |
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| 47 | fee. |
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| 48 | |
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| 49 | 2. You may modify your copy or copies of the Library or any portion |
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| 50 | of it, thus forming a work based on the Library, and copy and |
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| 51 | distribute such modifications or work under the terms of Section 1 |
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| 52 | above, provided that you also meet all of these conditions: |
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| 53 | |
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| 54 | a) The modified work must itself be a software library. |
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| 55 | |
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| 56 | b) You must cause the files modified to carry prominent notices |
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| 57 | stating that you changed the files and the date of any change. |
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| 58 | |
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| 59 | c) You must cause the whole of the work to be licensed at no |
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| 60 | charge to all third parties under the terms of this License. |
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| 61 | |
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| 62 | d) If a facility in the modified Library refers to a function or a |
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| 63 | table of data to be supplied by an application program that uses |
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| 64 | the facility, other than as an argument passed when the facility |
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| 65 | is invoked, then you must make a good faith effort to ensure that, |
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| 66 | in the event an application does not supply such function or |
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| 67 | table, the facility still operates, and performs whatever part of |
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| 68 | its purpose remains meaningful. |
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| 69 | |
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| 70 | (For example, a function in a library to compute square roots has |
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| 71 | a purpose that is entirely well-defined independent of the |
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| 72 | application. Therefore, Subsection 2d requires that any |
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| 73 | application-supplied function or table used by this function must |
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| 74 | be optional: if the application does not supply it, the square |
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| 75 | root function must still compute square roots.) |
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| 76 | |
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| 77 | These requirements apply to the modified work as a whole. If |
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| 78 | identifiable sections of that work are not derived from the Library, |
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| 79 | and can be reasonably considered independent and separate works in |
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| 80 | themselves, then this License, and its terms, do not apply to those |
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| 81 | sections when you distribute them as separate works. But when you |
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| 82 | distribute the same sections as part of a whole which is a work based |
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| 83 | on the Library, the distribution of the whole must be on the terms of |
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| 84 | this License, whose permissions for other licensees extend to the |
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| 85 | entire whole, and thus to each and every part regardless of who wrote |
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| 86 | it. |
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| 87 | |
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| 88 | Thus, it is not the intent of this section to claim rights or contest |
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| 89 | your rights to work written entirely by you; rather, the intent is to |
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| 90 | exercise the right to control the distribution of derivative or |
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| 91 | collective works based on the Library. |
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| 92 | |
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| 93 | In addition, mere aggregation of another work not based on the Library |
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| 94 | with the Library (or with a work based on the Library) on a volume of |
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| 95 | a storage or distribution medium does not bring the other work under |
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| 96 | the scope of this License. |
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| 97 | |
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| 98 | 3. You may opt to apply the terms of the ordinary GNU General Public |
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| 99 | License instead of this License to a given copy of the Library. To do |
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| 100 | this, you must alter all the notices that refer to this License, so |
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| 101 | that they refer to the ordinary GNU General Public License, version 2, |
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| 102 | instead of to this License. (If a newer version than version 2 of the |
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| 103 | ordinary GNU General Public License has appeared, then you can specify |
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| 104 | that version instead if you wish.) Do not make any other change in |
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| 105 | these notices. |
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| 106 | |
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| 107 | Once this change is made in a given copy, it is irreversible for |
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| 108 | that copy, so the ordinary GNU General Public License applies to all |
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| 109 | subsequent copies and derivative works made from that copy. |
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| 110 | |
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| 111 | This option is useful when you wish to copy part of the code of |
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| 112 | the Library into a program that is not a library. |
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| 113 | |
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| 114 | 4. You may copy and distribute the Library (or a portion or |
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| 115 | derivative of it, under Section 2) in object code or executable form |
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| 116 | under the terms of Sections 1 and 2 above provided that you accompany |
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| 117 | it with the complete corresponding machine-readable source code, which |
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| 118 | must be distributed under the terms of Sections 1 and 2 above on a |
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| 119 | medium customarily used for software interchange. |
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| 120 | |
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| 121 | If distribution of object code is made by offering access to copy |
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| 122 | from a designated place, then offering equivalent access to copy the |
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| 123 | source code from the same place satisfies the requirement to |
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| 124 | distribute the source code, even though third parties are not |
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| 125 | compelled to copy the source along with the object code. |
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| 126 | |
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| 127 | 5. A program that contains no derivative of any portion of the |
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| 128 | Library, but is designed to work with the Library by being compiled or |
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| 129 | linked with it, is called a "work that uses the Library". Such a |
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| 130 | work, in isolation, is not a derivative work of the Library, and |
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| 131 | therefore falls outside the scope of this License. |
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| 132 | |
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| 133 | However, linking a "work that uses the Library" with the Library |
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| 134 | creates an executable that is a derivative of the Library (because it |
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| 135 | contains portions of the Library), rather than a "work that uses the |
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| 136 | library". The executable is therefore covered by this License. |
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| 137 | Section 6 states terms for distribution of such executables. |
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| 138 | |
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| 139 | When a "work that uses the Library" uses material from a header file |
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| 140 | that is part of the Library, the object code for the work may be a |
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| 141 | derivative work of the Library even though the source code is not. |
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| 142 | Whether this is true is especially significant if the work can be |
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| 143 | linked without the Library, or if the work is itself a library. The |
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| 144 | threshold for this to be true is not precisely defined by law. |
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| 145 | |
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| 146 | If such an object file uses only numerical parameters, data |
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| 147 | structure layouts and accessors, and small macros and small inline |
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| 148 | functions (ten lines or less in length), then the use of the object |
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| 149 | file is unrestricted, regardless of whether it is legally a derivative |
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| 150 | work. (Executables containing this object code plus portions of the |
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| 151 | Library will still fall under Section 6.) |
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| 152 | |
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| 153 | Otherwise, if the work is a derivative of the Library, you may |
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| 154 | distribute the object code for the work under the terms of Section 6. |
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| 155 | Any executables containing that work also fall under Section 6, |
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| 156 | whether or not they are linked directly with the Library itself. |
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| 157 | |
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| 158 | 6. As an exception to the Sections above, you may also combine or |
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| 159 | link a "work that uses the Library" with the Library to produce a |
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| 160 | work containing portions of the Library, and distribute that work |
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| 161 | under terms of your choice, provided that the terms permit |
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| 162 | modification of the work for the customer's own use and reverse |
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| 163 | engineering for debugging such modifications. |
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| 164 | |
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| 165 | You must give prominent notice with each copy of the work that the |
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| 166 | Library is used in it and that the Library and its use are covered by |
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| 167 | this License. You must supply a copy of this License. If the work |
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| 168 | during execution displays copyright notices, you must include the |
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| 169 | copyright notice for the Library among them, as well as a reference |
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| 170 | directing the user to the copy of this License. Also, you must do one |
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| 171 | of these things: |
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| 172 | |
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| 173 | a) Accompany the work with the complete corresponding |
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| 174 | machine-readable source code for the Library including whatever |
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| 175 | changes were used in the work (which must be distributed under |
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| 176 | Sections 1 and 2 above); and, if the work is an executable linked |
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| 177 | with the Library, with the complete machine-readable "work that |
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| 178 | uses the Library", as object code and/or source code, so that the |
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| 179 | user can modify the Library and then relink to produce a modified |
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| 180 | executable containing the modified Library. (It is understood |
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| 181 | that the user who changes the contents of definitions files in the |
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| 182 | Library will not necessarily be able to recompile the application |
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| 183 | to use the modified definitions.) |
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| 184 | |
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| 185 | b) Use a suitable shared library mechanism for linking with the |
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| 186 | Library. A suitable mechanism is one that (1) uses at run time a |
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| 187 | copy of the library already present on the user's computer system, |
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| 188 | rather than copying library functions into the executable, and (2) |
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| 189 | will operate properly with a modified version of the library, if |
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| 190 | the user installs one, as long as the modified version is |
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| 191 | interface-compatible with the version that the work was made with. |
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| 192 | |
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| 193 | c) Accompany the work with a written offer, valid for at |
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| 194 | least three years, to give the same user the materials |
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| 195 | specified in Subsection 6a, above, for a charge no more |
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| 196 | than the cost of performing this distribution. |
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| 197 | |
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| 198 | d) If distribution of the work is made by offering access to copy |
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| 199 | from a designated place, offer equivalent access to copy the above |
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| 200 | specified materials from the same place. |
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| 201 | |
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| 202 | e) Verify that the user has already received a copy of these |
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| 203 | materials or that you have already sent this user a copy. |
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| 204 | |
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| 205 | For an executable, the required form of the "work that uses the |
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| 206 | Library" must include any data and utility programs needed for |
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| 207 | reproducing the executable from it. However, as a special exception, |
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| 208 | the materials to be distributed need not include anything that is |
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| 209 | normally distributed (in either source or binary form) with the major |
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| 210 | components (compiler, kernel, and so on) of the operating system on |
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| 211 | which the executable runs, unless that component itself accompanies |
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| 212 | the executable. |
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| 213 | |
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| 214 | It may happen that this requirement contradicts the license |
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| 215 | restrictions of other proprietary libraries that do not normally |
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| 216 | accompany the operating system. Such a contradiction means you cannot |
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| 217 | use both them and the Library together in an executable that you |
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| 218 | distribute. |
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| 219 | |
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| 220 | 7. You may place library facilities that are a work based on the |
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| 221 | Library side-by-side in a single library together with other library |
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| 222 | facilities not covered by this License, and distribute such a combined |
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| 223 | library, provided that the separate distribution of the work based on |
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| 224 | the Library and of the other library facilities is otherwise |
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| 225 | permitted, and provided that you do these two things: |
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| 226 | |
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| 227 | a) Accompany the combined library with a copy of the same work |
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| 228 | based on the Library, uncombined with any other library |
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| 229 | facilities. This must be distributed under the terms of the |
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| 230 | Sections above. |
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| 231 | |
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| 232 | b) Give prominent notice with the combined library of the fact |
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| 233 | that part of it is a work based on the Library, and explaining |
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| 234 | where to find the accompanying uncombined form of the same work. |
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| 235 | |
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| 236 | 8. You may not copy, modify, sublicense, link with, or distribute |
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| 237 | the Library except as expressly provided under this License. Any |
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| 238 | attempt otherwise to copy, modify, sublicense, link with, or |
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| 239 | distribute the Library is void, and will automatically terminate your |
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| 240 | rights under this License. However, parties who have received copies, |
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| 241 | or rights, from you under this License will not have their licenses |
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| 242 | terminated so long as such parties remain in full compliance. |
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| 243 | |
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| 244 | 9. You are not required to accept this License, since you have not |
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| 245 | signed it. However, nothing else grants you permission to modify or |
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| 246 | distribute the Library or its derivative works. These actions are |
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| 247 | prohibited by law if you do not accept this License. Therefore, by |
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| 248 | modifying or distributing the Library (or any work based on the |
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| 249 | Library), you indicate your acceptance of this License to do so, and |
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| 250 | all its terms and conditions for copying, distributing or modifying |
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| 251 | the Library or works based on it. |
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| 252 | |
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| 253 | 10. Each time you redistribute the Library (or any work based on the |
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| 254 | Library), the recipient automatically receives a license from the |
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| 255 | original licensor to copy, distribute, link with or modify the Library |
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| 256 | subject to these terms and conditions. You may not impose any further |
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| 257 | restrictions on the recipients' exercise of the rights granted herein. |
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| 258 | You are not responsible for enforcing compliance by third parties with |
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| 259 | this License. |
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| 260 | |
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| 261 | 11. If, as a consequence of a court judgment or allegation of patent |
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| 262 | infringement or for any other reason (not limited to patent issues), |
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| 263 | conditions are imposed on you (whether by court order, agreement or |
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| 264 | otherwise) that contradict the conditions of this License, they do not |
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| 265 | excuse you from the conditions of this License. If you cannot |
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| 266 | distribute so as to satisfy simultaneously your obligations under this |
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| 267 | License and any other pertinent obligations, then as a consequence you |
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| 268 | may not distribute the Library at all. For example, if a patent |
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| 269 | license would not permit royalty-free redistribution of the Library by |
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| 270 | all those who receive copies directly or indirectly through you, then |
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| 271 | the only way you could satisfy both it and this License would be to |
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| 272 | refrain entirely from distribution of the Library. |
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| 273 | |
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| 274 | If any portion of this section is held invalid or unenforceable under any |
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| 275 | particular circumstance, the balance of the section is intended to apply, |
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| 276 | and the section as a whole is intended to apply in other circumstances. |
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| 277 | |
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| 278 | It is not the purpose of this section to induce you to infringe any |
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| 279 | patents or other property right claims or to contest validity of any |
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| 280 | such claims; this section has the sole purpose of protecting the |
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| 281 | integrity of the free software distribution system which is |
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| 282 | implemented by public license practices. Many people have made |
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| 283 | generous contributions to the wide range of software distributed |
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| 284 | through that system in reliance on consistent application of that |
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| 285 | system; it is up to the author/donor to decide if he or she is willing |
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| 286 | to distribute software through any other system and a licensee cannot |
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| 287 | impose that choice. |
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| 288 | |
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| 289 | This section is intended to make thoroughly clear what is believed to |
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| 290 | be a consequence of the rest of this License. |
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| 291 | |
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| 292 | 12. If the distribution and/or use of the Library is restricted in |
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| 293 | certain countries either by patents or by copyrighted interfaces, the |
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| 294 | original copyright holder who places the Library under this License may add |
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| 295 | an explicit geographical distribution limitation excluding those countries, |
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| 296 | so that distribution is permitted only in or among countries not thus |
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| 297 | excluded. In such case, this License incorporates the limitation as if |
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| 298 | written in the body of this License. |
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| 299 | |
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| 300 | 13. The Free Software Foundation may publish revised and/or new |
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| 301 | versions of the Lesser General Public License from time to time. |
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| 302 | Such new versions will be similar in spirit to the present version, |
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| 303 | but may differ in detail to address new problems or concerns. |
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| 304 | |
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| 305 | Each version is given a distinguishing version number. If the Library |
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| 306 | specifies a version number of this License which applies to it and |
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| 307 | "any later version", you have the option of following the terms and |
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| 308 | conditions either of that version or of any later version published by |
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| 309 | the Free Software Foundation. If the Library does not specify a |
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| 310 | license version number, you may choose any version ever published by |
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| 311 | the Free Software Foundation. |
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| 312 | |
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| 313 | 14. If you wish to incorporate parts of the Library into other free |
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| 314 | programs whose distribution conditions are incompatible with these, |
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| 315 | write to the author to ask for permission. For software which is |
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| 316 | copyrighted by the Free Software Foundation, write to the Free |
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| 317 | Software Foundation; we sometimes make exceptions for this. Our |
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| 318 | decision will be guided by the two goals of preserving the free status |
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| 319 | of all derivatives of our free software and of promoting the sharing |
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| 320 | and reuse of software generally. |
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| 321 | |
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| 322 | NO WARRANTY |
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| 323 | |
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| 324 | 15. BECAUSE THE LIBRARY IS LICENSED FREE OF CHARGE, THERE IS NO |
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| 325 | WARRANTY FOR THE LIBRARY, TO THE EXTENT PERMITTED BY APPLICABLE LAW. |
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| 326 | EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR |
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| 327 | OTHER PARTIES PROVIDE THE LIBRARY "AS IS" WITHOUT WARRANTY OF ANY |
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| 328 | KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE |
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| 329 | IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
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| 330 | PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE |
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| 331 | LIBRARY IS WITH YOU. SHOULD THE LIBRARY PROVE DEFECTIVE, YOU ASSUME |
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| 332 | THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION. |
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| 333 | |
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| 334 | 16. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN |
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| 335 | WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY |
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| 336 | AND/OR REDISTRIBUTE THE LIBRARY AS PERMITTED ABOVE, BE LIABLE TO YOU |
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| 337 | FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR |
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| 338 | CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE |
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| 339 | LIBRARY (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING |
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| 340 | RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A |
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| 341 | FAILURE OF THE LIBRARY TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF |
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| 342 | SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH |
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| 343 | DAMAGES. |
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| 344 | |
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| 345 | END OF TERMS AND CONDITIONS |
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