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docs/lgpl-3.0.txt

2:b6f6d08a3c14
2012-04-02 Paul Boddie Added copyright and licensing information plus some documentation.
     1 		   GNU LESSER GENERAL PUBLIC LICENSE
     2                        Version 3, 29 June 2007
     3 
     4  Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
     5  Everyone is permitted to copy and distribute verbatim copies
     6  of this license document, but changing it is not allowed.
     7 
     8 
     9   This version of the GNU Lesser General Public License incorporates
    10 the terms and conditions of version 3 of the GNU General Public
    11 License, supplemented by the additional permissions listed below.
    12 
    13   0. Additional Definitions. 
    14 
    15   As used herein, "this License" refers to version 3 of the GNU Lesser
    16 General Public License, and the "GNU GPL" refers to version 3 of the GNU
    17 General Public License.
    18 
    19   "The Library" refers to a covered work governed by this License,
    20 other than an Application or a Combined Work as defined below.
    21 
    22   An "Application" is any work that makes use of an interface provided
    23 by the Library, but which is not otherwise based on the Library.
    24 Defining a subclass of a class defined by the Library is deemed a mode
    25 of using an interface provided by the Library.
    26 
    27   A "Combined Work" is a work produced by combining or linking an
    28 Application with the Library.  The particular version of the Library
    29 with which the Combined Work was made is also called the "Linked
    30 Version".
    31 
    32   The "Minimal Corresponding Source" for a Combined Work means the
    33 Corresponding Source for the Combined Work, excluding any source code
    34 for portions of the Combined Work that, considered in isolation, are
    35 based on the Application, and not on the Linked Version.
    36 
    37   The "Corresponding Application Code" for a Combined Work means the
    38 object code and/or source code for the Application, including any data
    39 and utility programs needed for reproducing the Combined Work from the
    40 Application, but excluding the System Libraries of the Combined Work.
    41 
    42   1. Exception to Section 3 of the GNU GPL.
    43 
    44   You may convey a covered work under sections 3 and 4 of this License
    45 without being bound by section 3 of the GNU GPL.
    46 
    47   2. Conveying Modified Versions.
    48 
    49   If you modify a copy of the Library, and, in your modifications, a
    50 facility refers to a function or data to be supplied by an Application
    51 that uses the facility (other than as an argument passed when the
    52 facility is invoked), then you may convey a copy of the modified
    53 version:
    54 
    55    a) under this License, provided that you make a good faith effort to
    56    ensure that, in the event an Application does not supply the
    57    function or data, the facility still operates, and performs
    58    whatever part of its purpose remains meaningful, or
    59 
    60    b) under the GNU GPL, with none of the additional permissions of
    61    this License applicable to that copy.
    62 
    63   3. Object Code Incorporating Material from Library Header Files.
    64 
    65   The object code form of an Application may incorporate material from
    66 a header file that is part of the Library.  You may convey such object
    67 code under terms of your choice, provided that, if the incorporated
    68 material is not limited to numerical parameters, data structure
    69 layouts and accessors, or small macros, inline functions and templates
    70 (ten or fewer lines in length), you do both of the following:
    71 
    72    a) Give prominent notice with each copy of the object code that the
    73    Library is used in it and that the Library and its use are
    74    covered by this License.
    75 
    76    b) Accompany the object code with a copy of the GNU GPL and this license
    77    document.
    78 
    79   4. Combined Works.
    80 
    81   You may convey a Combined Work under terms of your choice that,
    82 taken together, effectively do not restrict modification of the
    83 portions of the Library contained in the Combined Work and reverse
    84 engineering for debugging such modifications, if you also do each of
    85 the following:
    86 
    87    a) Give prominent notice with each copy of the Combined Work that
    88    the Library is used in it and that the Library and its use are
    89    covered by this License.
    90 
    91    b) Accompany the Combined Work with a copy of the GNU GPL and this license
    92    document.
    93 
    94    c) For a Combined Work that displays copyright notices during
    95    execution, include the copyright notice for the Library among
    96    these notices, as well as a reference directing the user to the
    97    copies of the GNU GPL and this license document.
    98 
    99    d) Do one of the following:
   100 
   101        0) Convey the Minimal Corresponding Source under the terms of this
   102        License, and the Corresponding Application Code in a form
   103        suitable for, and under terms that permit, the user to
   104        recombine or relink the Application with a modified version of
   105        the Linked Version to produce a modified Combined Work, in the
   106        manner specified by section 6 of the GNU GPL for conveying
   107        Corresponding Source.
   108 
   109        1) Use a suitable shared library mechanism for linking with the
   110        Library.  A suitable mechanism is one that (a) uses at run time
   111        a copy of the Library already present on the user's computer
   112        system, and (b) will operate properly with a modified version
   113        of the Library that is interface-compatible with the Linked
   114        Version. 
   115 
   116    e) Provide Installation Information, but only if you would otherwise
   117    be required to provide such information under section 6 of the
   118    GNU GPL, and only to the extent that such information is
   119    necessary to install and execute a modified version of the
   120    Combined Work produced by recombining or relinking the
   121    Application with a modified version of the Linked Version. (If
   122    you use option 4d0, the Installation Information must accompany
   123    the Minimal Corresponding Source and Corresponding Application
   124    Code. If you use option 4d1, you must provide the Installation
   125    Information in the manner specified by section 6 of the GNU GPL
   126    for conveying Corresponding Source.)
   127 
   128   5. Combined Libraries.
   129 
   130   You may place library facilities that are a work based on the
   131 Library side by side in a single library together with other library
   132 facilities that are not Applications and are not covered by this
   133 License, and convey such a combined library under terms of your
   134 choice, if you do both of the following:
   135 
   136    a) Accompany the combined library with a copy of the same work based
   137    on the Library, uncombined with any other library facilities,
   138    conveyed under the terms of this License.
   139 
   140    b) Give prominent notice with the combined library that part of it
   141    is a work based on the Library, and explaining where to find the
   142    accompanying uncombined form of the same work.
   143 
   144   6. Revised Versions of the GNU Lesser General Public License.
   145 
   146   The Free Software Foundation may publish revised and/or new versions
   147 of the GNU Lesser General Public License from time to time. Such new
   148 versions will be similar in spirit to the present version, but may
   149 differ in detail to address new problems or concerns.
   150 
   151   Each version is given a distinguishing version number. If the
   152 Library as you received it specifies that a certain numbered version
   153 of the GNU Lesser General Public License "or any later version"
   154 applies to it, you have the option of following the terms and
   155 conditions either of that published version or of any later version
   156 published by the Free Software Foundation. If the Library as you
   157 received it does not specify a version number of the GNU Lesser
   158 General Public License, you may choose any version of the GNU Lesser
   159 General Public License ever published by the Free Software Foundation.
   160 
   161   If the Library as you received it specifies that a proxy can decide
   162 whether future versions of the GNU Lesser General Public License shall
   163 apply, that proxy's public statement of acceptance of any version is
   164 permanent authorization for you to choose that version for the
   165 Library.