| 1 | 
  | 
 
 
 
 
 
 | 2 | 
                   GNU LESSER GENERAL PUBLIC LICENSE | 
 
 
 
 
 
 | 3 | 
                        Version 2.1, February 1999 | 
 
 
 
 
 
 | 4 | 
  | 
 
 
 
 
 
 | 5 | 
  Copyright (C) 1991, 1999 Free Software Foundation, Inc. | 
 
 
 
 
 
 | 6 | 
         51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA | 
 
 
 
 
 
 | 7 | 
  Everyone is permitted to copy and distribute verbatim copies | 
 
 
 
 
 
 | 8 | 
  of this license document, but changing it is not allowed. | 
 
 
 
 
 
 | 9 | 
  | 
 
 
 
 
 
 | 10 | 
 [This is the first released version of the Lesser GPL.  It also counts | 
 
 
 
 
 
 | 11 | 
  as the successor of the GNU Library Public License, version 2, hence | 
 
 
 
 
 
 | 12 | 
  the version number 2.1.] | 
 
 
 
 
 
 | 13 | 
  | 
 
 
 
 
 
 | 14 | 
                             Preamble | 
 
 
 
 
 
 | 15 | 
  | 
 
 
 
 
 
 | 16 | 
   The licenses for most software are designed to take away your | 
 
 
 
 
 
 | 17 | 
 freedom to share and change it.  By contrast, the GNU General Public | 
 
 
 
 
 
 | 18 | 
 Licenses are intended to guarantee your freedom to share and change | 
 
 
 
 
 
 | 19 | 
 free software--to make sure the software is free for all its users. | 
 
 
 
 
 
 | 20 | 
  | 
 
 
 
 
 
 | 21 | 
   This license, the Lesser General Public License, applies to some | 
 
 
 
 
 
 | 22 | 
 specially designated software packages--typically libraries--of the | 
 
 
 
 
 
 | 23 | 
 Free Software Foundation and other authors who decide to use it.  You | 
 
 
 
 
 
 | 24 | 
 can use it too, but we suggest you first think carefully about whether | 
 
 
 
 
 
 | 25 | 
 this license or the ordinary General Public License is the better | 
 
 
 
 
 
 | 26 | 
 strategy to use in any particular case, based on the explanations | 
 
 
 
 
 
 | 27 | 
 below. | 
 
 
 
 
 
 | 28 | 
  | 
 
 
 
 
 
 | 29 | 
   When we speak of free software, we are referring to freedom of use, | 
 
 
 
 
 
 | 30 | 
 not price.  Our General Public Licenses are designed to make sure that | 
 
 
 
 
 
 | 31 | 
 you have the freedom to distribute copies of free software (and charge | 
 
 
 
 
 
 | 32 | 
 for this service if you wish); that you receive source code or can get | 
 
 
 
 
 
 | 33 | 
 it if you want it; that you can change the software and use pieces of | 
 
 
 
 
 
 | 34 | 
 it in new free programs; and that you are informed that you can do | 
 
 
 
 
 
 | 35 | 
 these things. | 
 
 
 
 
 
 | 36 | 
  | 
 
 
 
 
 
 | 37 | 
   To protect your rights, we need to make restrictions that forbid | 
 
 
 
 
 
 | 38 | 
 distributors to deny you these rights or to ask you to surrender these | 
 
 
 
 
 
 | 39 | 
 rights.  These restrictions translate to certain responsibilities for | 
 
 
 
 
 
 | 40 | 
 you if you distribute copies of the library or if you modify it. | 
 
 
 
 
 
 | 41 | 
  | 
 
 
 
 
 
 | 42 | 
   For example, if you distribute copies of the library, whether gratis | 
 
 
 
 
 
 | 43 | 
 or for a fee, you must give the recipients all the rights that we gave | 
 
 
 
 
 
 | 44 | 
 you.  You must make sure that they, too, receive or can get the source | 
 
 
 
 
 
 | 45 | 
 code.  If you link other code with the library, you must provide | 
 
 
 
 
 
 | 46 | 
 complete object files to the recipients, so that they can relink them | 
 
 
 
 
 
 | 47 | 
 with the library after making changes to the library and recompiling | 
 
 
 
 
 
 | 48 | 
 it.  And you must show them these terms so they know their rights. | 
 
 
 
 
 
 | 49 | 
  | 
 
 
 
 
 
 | 50 | 
   We protect your rights with a two-step method: (1) we copyright the | 
 
 
 
 
 
 | 51 | 
 library, and (2) we offer you this license, which gives you legal | 
 
 
 
 
 
 | 52 | 
 permission to copy, distribute and/or modify the library. | 
 
 
 
 
 
 | 53 | 
  | 
 
 
 
 
 
 | 54 | 
   To protect each distributor, we want to make it very clear that | 
 
 
 
 
 
 | 55 | 
 there is no warranty for the free library.  Also, if the library is | 
 
 
 
 
 
 | 56 | 
 modified by someone else and passed on, the recipients should know | 
 
 
 
 
 
 | 57 | 
 that what they have is not the original version, so that the original | 
 
 
 
 
 
 | 58 | 
 author's reputation will not be affected by problems that might be | 
 
 
 
 
 
 | 59 | 
 introduced by others. | 
 
 
 
 
 
 | 60 | 
  | 
 
 
 
 
 
 | 61 | 
   Finally, software patents pose a constant threat to the existence of | 
 
 
 
 
 
 | 62 | 
 any free program.  We wish to make sure that a company cannot | 
 
 
 
 
 
 | 63 | 
 effectively restrict the users of a free program by obtaining a | 
 
 
 
 
 
 | 64 | 
 restrictive license from a patent holder.  Therefore, we insist that | 
 
 
 
 
 
 | 65 | 
 any patent license obtained for a version of the library must be | 
 
 
 
 
 
 | 66 | 
 consistent with the full freedom of use specified in this license. | 
 
 
 
 
 
 | 67 | 
  | 
 
 
 
 
 
 | 68 | 
   Most GNU software, including some libraries, is covered by the | 
 
 
 
 
 
 | 69 | 
 ordinary GNU General Public License.  This license, the GNU Lesser | 
 
 
 
 
 
 | 70 | 
 General Public License, applies to certain designated libraries, and | 
 
 
 
 
 
 | 71 | 
 is quite different from the ordinary General Public License.  We use | 
 
 
 
 
 
 | 72 | 
 this license for certain libraries in order to permit linking those | 
 
 
 
 
 
 | 73 | 
 libraries into non-free programs. | 
 
 
 
 
 
 | 74 | 
  | 
 
 
 
 
 
 | 75 | 
   When a program is linked with a library, whether statically or using | 
 
 
 
 
 
 | 76 | 
 a shared library, the combination of the two is legally speaking a | 
 
 
 
 
 
 | 77 | 
 combined work, a derivative of the original library.  The ordinary | 
 
 
 
 
 
 | 78 | 
 General Public License therefore permits such linking only if the | 
 
 
 
 
 
 | 79 | 
 entire combination fits its criteria of freedom.  The Lesser General | 
 
 
 
 
 
 | 80 | 
 Public License permits more lax criteria for linking other code with | 
 
 
 
 
 
 | 81 | 
 the library. | 
 
 
 
 
 
 | 82 | 
  | 
 
 
 
 
 
 | 83 | 
   We call this license the "Lesser" General Public License because it | 
 
 
 
 
 
 | 84 | 
 does Less to protect the user's freedom than the ordinary General | 
 
 
 
 
 
 | 85 | 
 Public License.  It also provides other free software developers Less | 
 
 
 
 
 
 | 86 | 
 of an advantage over competing non-free programs.  These disadvantages | 
 
 
 
 
 
 | 87 | 
 are the reason we use the ordinary General Public License for many | 
 
 
 
 
 
 | 88 | 
 libraries.  However, the Lesser license provides advantages in certain | 
 
 
 
 
 
 | 89 | 
 special circumstances. | 
 
 
 
 
 
 | 90 | 
  | 
 
 
 
 
 
 | 91 | 
   For example, on rare occasions, there may be a special need to | 
 
 
 
 
 
 | 92 | 
 encourage the widest possible use of a certain library, so that it | 
 
 
 
 
 
 | 93 | 
 becomes a de-facto standard.  To achieve this, non-free programs must | 
 
 
 
 
 
 | 94 | 
 be allowed to use the library.  A more frequent case is that a free | 
 
 
 
 
 
 | 95 | 
 library does the same job as widely used non-free libraries.  In this | 
 
 
 
 
 
 | 96 | 
 case, there is little to gain by limiting the free library to free | 
 
 
 
 
 
 | 97 | 
 software only, so we use the Lesser General Public License. | 
 
 
 
 
 
 | 98 | 
  | 
 
 
 
 
 
 | 99 | 
   In other cases, permission to use a particular library in non-free | 
 
 
 
 
 
 | 100 | 
 programs enables a greater number of people to use a large body of | 
 
 
 
 
 
 | 101 | 
 free software.  For example, permission to use the GNU C Library in | 
 
 
 
 
 
 | 102 | 
 non-free programs enables many more people to use the whole GNU | 
 
 
 
 
 
 | 103 | 
 operating system, as well as its variant, the GNU/Linux operating | 
 
 
 
 
 
 | 104 | 
 system. | 
 
 
 
 
 
 | 105 | 
  | 
 
 
 
 
 
 | 106 | 
   Although the Lesser General Public License is Less protective of the | 
 
 
 
 
 
 | 107 | 
 users' freedom, it does ensure that the user of a program that is | 
 
 
 
 
 
 | 108 | 
 linked with the Library has the freedom and the wherewithal to run | 
 
 
 
 
 
 | 109 | 
 that program using a modified version of the Library. | 
 
 
 
 
 
 | 110 | 
  | 
 
 
 
 
 
 | 111 | 
   The precise terms and conditions for copying, distribution and | 
 
 
 
 
 
 | 112 | 
 modification follow.  Pay close attention to the difference between a | 
 
 
 
 
 
 | 113 | 
 "work based on the library" and a "work that uses the library".  The | 
 
 
 
 
 
 | 114 | 
 former contains code derived from the library, whereas the latter must | 
 
 
 
 
 
 | 115 | 
 be combined with the library in order to run. | 
 
 
 
 
 
 | 116 | 
  | 
 
 
 
 
 
 | 117 | 
                   GNU LESSER GENERAL PUBLIC LICENSE | 
 
 
 
 
 
 | 118 | 
    TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION | 
 
 
 
 
 
 | 119 | 
  | 
 
 
 
 
 
 | 120 | 
   0. This License Agreement applies to any software library or other | 
 
 
 
 
 
 | 121 | 
 program which contains a notice placed by the copyright holder or | 
 
 
 
 
 
 | 122 | 
 other authorized party saying it may be distributed under the terms of | 
 
 
 
 
 
 | 123 | 
 this Lesser General Public License (also called "this License"). | 
 
 
 
 
 
 | 124 | 
 Each licensee is addressed as "you". | 
 
 
 
 
 
 | 125 | 
  | 
 
 
 
 
 
 | 126 | 
   A "library" means a collection of software functions and/or data | 
 
 
 
 
 
 | 127 | 
 prepared so as to be conveniently linked with application programs | 
 
 
 
 
 
 | 128 | 
 (which use some of those functions and data) to form executables. | 
 
 
 
 
 
 | 129 | 
  | 
 
 
 
 
 
 | 130 | 
   The "Library", below, refers to any such software library or work | 
 
 
 
 
 
 | 131 | 
 which has been distributed under these terms.  A "work based on the | 
 
 
 
 
 
 | 132 | 
 Library" means either the Library or any derivative work under | 
 
 
 
 
 
 | 133 | 
 copyright law: that is to say, a work containing the Library or a | 
 
 
 
 
 
 | 134 | 
 portion of it, either verbatim or with modifications and/or translated | 
 
 
 
 
 
 | 135 | 
 straightforwardly into another language.  (Hereinafter, translation is | 
 
 
 
 
 
 | 136 | 
 included without limitation in the term "modification".) | 
 
 
 
 
 
 | 137 | 
  | 
 
 
 
 
 
 | 138 | 
   "Source code" for a work means the preferred form of the work for | 
 
 
 
 
 
 | 139 | 
 making modifications to it.  For a library, complete source code means | 
 
 
 
 
 
 | 140 | 
 all the source code for all modules it contains, plus any associated | 
 
 
 
 
 
 | 141 | 
 interface definition files, plus the scripts used to control | 
 
 
 
 
 
 | 142 | 
 compilation and installation of the library. | 
 
 
 
 
 
 | 143 | 
  | 
 
 
 
 
 
 | 144 | 
   Activities other than copying, distribution and modification are not | 
 
 
 
 
 
 | 145 | 
 covered by this License; they are outside its scope.  The act of | 
 
 
 
 
 
 | 146 | 
 running a program using the Library is not restricted, and output from | 
 
 
 
 
 
 | 147 | 
 such a program is covered only if its contents constitute a work based | 
 
 
 
 
 
 | 148 | 
 on the Library (independent of the use of the Library in a tool for | 
 
 
 
 
 
 | 149 | 
 writing it).  Whether that is true depends on what the Library does | 
 
 
 
 
 
 | 150 | 
 and what the program that uses the Library does. | 
 
 
 
 
 
 | 151 | 
  | 
 
 
 
 
 
 | 152 | 
   1. You may copy and distribute verbatim copies of the Library's | 
 
 
 
 
 
 | 153 | 
 complete source code as you receive it, in any medium, provided that | 
 
 
 
 
 
 | 154 | 
 you conspicuously and appropriately publish on each copy an | 
 
 
 
 
 
 | 155 | 
 appropriate copyright notice and disclaimer of warranty; keep intact | 
 
 
 
 
 
 | 156 | 
 all the notices that refer to this License and to the absence of any | 
 
 
 
 
 
 | 157 | 
 warranty; and distribute a copy of this License along with the | 
 
 
 
 
 
 | 158 | 
 Library. | 
 
 
 
 
 
 | 159 | 
  | 
 
 
 
 
 
 | 160 | 
   You may charge a fee for the physical act of transferring a copy, | 
 
 
 
 
 
 | 161 | 
 and you may at your option offer warranty protection in exchange for a | 
 
 
 
 
 
 | 162 | 
 fee. | 
 
 
 
 
 
 | 163 | 
  | 
 
 
 
 
 
 | 164 | 
   2. You may modify your copy or copies of the Library or any portion | 
 
 
 
 
 
 | 165 | 
 of it, thus forming a work based on the Library, and copy and | 
 
 
 
 
 
 | 166 | 
 distribute such modifications or work under the terms of Section 1 | 
 
 
 
 
 
 | 167 | 
 above, provided that you also meet all of these conditions: | 
 
 
 
 
 
 | 168 | 
  | 
 
 
 
 
 
 | 169 | 
     a) The modified work must itself be a software library. | 
 
 
 
 
 
 | 170 | 
  | 
 
 
 
 
 
 | 171 | 
     b) You must cause the files modified to carry prominent notices | 
 
 
 
 
 
 | 172 | 
     stating that you changed the files and the date of any change. | 
 
 
 
 
 
 | 173 | 
  | 
 
 
 
 
 
 | 174 | 
     c) You must cause the whole of the work to be licensed at no | 
 
 
 
 
 
 | 175 | 
     charge to all third parties under the terms of this License. | 
 
 
 
 
 
 | 176 | 
  | 
 
 
 
 
 
 | 177 | 
     d) If a facility in the modified Library refers to a function or a | 
 
 
 
 
 
 | 178 | 
     table of data to be supplied by an application program that uses | 
 
 
 
 
 
 | 179 | 
     the facility, other than as an argument passed when the facility | 
 
 
 
 
 
 | 180 | 
     is invoked, then you must make a good faith effort to ensure that, | 
 
 
 
 
 
 | 181 | 
     in the event an application does not supply such function or | 
 
 
 
 
 
 | 182 | 
     table, the facility still operates, and performs whatever part of | 
 
 
 
 
 
 | 183 | 
     its purpose remains meaningful. | 
 
 
 
 
 
 | 184 | 
  | 
 
 
 
 
 
 | 185 | 
     (For example, a function in a library to compute square roots has | 
 
 
 
 
 
 | 186 | 
     a purpose that is entirely well-defined independent of the | 
 
 
 
 
 
 | 187 | 
     application.  Therefore, Subsection 2d requires that any | 
 
 
 
 
 
 | 188 | 
     application-supplied function or table used by this function must | 
 
 
 
 
 
 | 189 | 
     be optional: if the application does not supply it, the square | 
 
 
 
 
 
 | 190 | 
     root function must still compute square roots.) | 
 
 
 
 
 
 | 191 | 
  | 
 
 
 
 
 
 | 192 | 
 These requirements apply to the modified work as a whole.  If | 
 
 
 
 
 
 | 193 | 
 identifiable sections of that work are not derived from the Library, | 
 
 
 
 
 
 | 194 | 
 and can be reasonably considered independent and separate works in | 
 
 
 
 
 
 | 195 | 
 themselves, then this License, and its terms, do not apply to those | 
 
 
 
 
 
 | 196 | 
 sections when you distribute them as separate works.  But when you | 
 
 
 
 
 
 | 197 | 
 distribute the same sections as part of a whole which is a work based | 
 
 
 
 
 
 | 198 | 
 on the Library, the distribution of the whole must be on the terms of | 
 
 
 
 
 
 | 199 | 
 this License, whose permissions for other licensees extend to the | 
 
 
 
 
 
 | 200 | 
 entire whole, and thus to each and every part regardless of who wrote | 
 
 
 
 
 
 | 201 | 
 it. | 
 
 
 
 
 
 | 202 | 
  | 
 
 
 
 
 
 | 203 | 
 Thus, it is not the intent of this section to claim rights or contest | 
 
 
 
 
 
 | 204 | 
 your rights to work written entirely by you; rather, the intent is to | 
 
 
 
 
 
 | 205 | 
 exercise the right to control the distribution of derivative or | 
 
 
 
 
 
 | 206 | 
 collective works based on the Library. | 
 
 
 
 
 
 | 207 | 
  | 
 
 
 
 
 
 | 208 | 
 In addition, mere aggregation of another work not based on the Library | 
 
 
 
 
 
 | 209 | 
 with the Library (or with a work based on the Library) on a volume of | 
 
 
 
 
 
 | 210 | 
 a storage or distribution medium does not bring the other work under | 
 
 
 
 
 
 | 211 | 
 the scope of this License. | 
 
 
 
 
 
 | 212 | 
  | 
 
 
 
 
 
 | 213 | 
   3. You may opt to apply the terms of the ordinary GNU General Public | 
 
 
 
 
 
 | 214 | 
 License instead of this License to a given copy of the Library.  To do | 
 
 
 
 
 
 | 215 | 
 this, you must alter all the notices that refer to this License, so | 
 
 
 
 
 
 | 216 | 
 that they refer to the ordinary GNU General Public License, version 2, | 
 
 
 
 
 
 | 217 | 
 instead of to this License.  (If a newer version than version 2 of the | 
 
 
 
 
 
 | 218 | 
 ordinary GNU General Public License has appeared, then you can specify | 
 
 
 
 
 
 | 219 | 
 that version instead if you wish.)  Do not make any other change in | 
 
 
 
 
 
 | 220 | 
 these notices. | 
 
 
 
 
 
 | 221 | 
  | 
 
 
 
 
 
 | 222 | 
   Once this change is made in a given copy, it is irreversible for | 
 
 
 
 
 
 | 223 | 
 that copy, so the ordinary GNU General Public License applies to all | 
 
 
 
 
 
 | 224 | 
 subsequent copies and derivative works made from that copy. | 
 
 
 
 
 
 | 225 | 
  | 
 
 
 
 
 
 | 226 | 
   This option is useful when you wish to copy part of the code of | 
 
 
 
 
 
 | 227 | 
 the Library into a program that is not a library. | 
 
 
 
 
 
 | 228 | 
  | 
 
 
 
 
 
 | 229 | 
   4. You may copy and distribute the Library (or a portion or | 
 
 
 
 
 
 | 230 | 
 derivative of it, under Section 2) in object code or executable form | 
 
 
 
 
 
 | 231 | 
 under the terms of Sections 1 and 2 above provided that you accompany | 
 
 
 
 
 
 | 232 | 
 it with the complete corresponding machine-readable source code, which | 
 
 
 
 
 
 | 233 | 
 must be distributed under the terms of Sections 1 and 2 above on a | 
 
 
 
 
 
 | 234 | 
 medium customarily used for software interchange. | 
 
 
 
 
 
 | 235 | 
  | 
 
 
 
 
 
 | 236 | 
   If distribution of object code is made by offering access to copy | 
 
 
 
 
 
 | 237 | 
 from a designated place, then offering equivalent access to copy the | 
 
 
 
 
 
 | 238 | 
 source code from the same place satisfies the requirement to | 
 
 
 
 
 
 | 239 | 
 distribute the source code, even though third parties are not | 
 
 
 
 
 
 | 240 | 
 compelled to copy the source along with the object code. | 
 
 
 
 
 
 | 241 | 
  | 
 
 
 
 
 
 | 242 | 
   5. A program that contains no derivative of any portion of the | 
 
 
 
 
 
 | 243 | 
 Library, but is designed to work with the Library by being compiled or | 
 
 
 
 
 
 | 244 | 
 linked with it, is called a "work that uses the Library".  Such a | 
 
 
 
 
 
 | 245 | 
 work, in isolation, is not a derivative work of the Library, and | 
 
 
 
 
 
 | 246 | 
 therefore falls outside the scope of this License. | 
 
 
 
 
 
 | 247 | 
  | 
 
 
 
 
 
 | 248 | 
   However, linking a "work that uses the Library" with the Library | 
 
 
 
 
 
 | 249 | 
 creates an executable that is a derivative of the Library (because it | 
 
 
 
 
 
 | 250 | 
 contains portions of the Library), rather than a "work that uses the | 
 
 
 
 
 
 | 251 | 
 library".  The executable is therefore covered by this License. | 
 
 
 
 
 
 | 252 | 
 Section 6 states terms for distribution of such executables. | 
 
 
 
 
 
 | 253 | 
  | 
 
 
 
 
 
 | 254 | 
   When a "work that uses the Library" uses material from a header file | 
 
 
 
 
 
 | 255 | 
 that is part of the Library, the object code for the work may be a | 
 
 
 
 
 
 | 256 | 
 derivative work of the Library even though the source code is not. | 
 
 
 
 
 
 | 257 | 
 Whether this is true is especially significant if the work can be | 
 
 
 
 
 
 | 258 | 
 linked without the Library, or if the work is itself a library.  The | 
 
 
 
 
 
 | 259 | 
 threshold for this to be true is not precisely defined by law. | 
 
 
 
 
 
 | 260 | 
  | 
 
 
 
 
 
 | 261 | 
   If such an object file uses only numerical parameters, data | 
 
 
 
 
 
 | 262 | 
 structure layouts and accessors, and small macros and small inline | 
 
 
 
 
 
 | 263 | 
 functions (ten lines or less in length), then the use of the object | 
 
 
 
 
 
 | 264 | 
 file is unrestricted, regardless of whether it is legally a derivative | 
 
 
 
 
 
 | 265 | 
 work.  (Executables containing this object code plus portions of the | 
 
 
 
 
 
 | 266 | 
 Library will still fall under Section 6.) | 
 
 
 
 
 
 | 267 | 
  | 
 
 
 
 
 
 | 268 | 
   Otherwise, if the work is a derivative of the Library, you may | 
 
 
 
 
 
 | 269 | 
 distribute the object code for the work under the terms of Section 6. | 
 
 
 
 
 
 | 270 | 
 Any executables containing that work also fall under Section 6, | 
 
 
 
 
 
 | 271 | 
 whether or not they are linked directly with the Library itself. | 
 
 
 
 
 
 | 272 | 
  | 
 
 
 
 
 
 | 273 | 
   6. As an exception to the Sections above, you may also combine or | 
 
 
 
 
 
 | 274 | 
 link a "work that uses the Library" with the Library to produce a | 
 
 
 
 
 
 | 275 | 
 work containing portions of the Library, and distribute that work | 
 
 
 
 
 
 | 276 | 
 under terms of your choice, provided that the terms permit | 
 
 
 
 
 
 | 277 | 
 modification of the work for the customer's own use and reverse | 
 
 
 
 
 
 | 278 | 
 engineering for debugging such modifications. | 
 
 
 
 
 
 | 279 | 
  | 
 
 
 
 
 
 | 280 | 
   You must give prominent notice with each copy of the work that the | 
 
 
 
 
 
 | 281 | 
 Library is used in it and that the Library and its use are covered by | 
 
 
 
 
 
 | 282 | 
 this License.  You must supply a copy of this License.  If the work | 
 
 
 
 
 
 | 283 | 
 during execution displays copyright notices, you must include the | 
 
 
 
 
 
 | 284 | 
 copyright notice for the Library among them, as well as a reference | 
 
 
 
 
 
 | 285 | 
 directing the user to the copy of this License.  Also, you must do one | 
 
 
 
 
 
 | 286 | 
 of these things: | 
 
 
 
 
 
 | 287 | 
  | 
 
 
 
 
 
 | 288 | 
     a) Accompany the work with the complete corresponding | 
 
 
 
 
 
 | 289 | 
     machine-readable source code for the Library including whatever | 
 
 
 
 
 
 | 290 | 
     changes were used in the work (which must be distributed under | 
 
 
 
 
 
 | 291 | 
     Sections 1 and 2 above); and, if the work is an executable linked | 
 
 
 
 
 
 | 292 | 
     with the Library, with the complete machine-readable "work that | 
 
 
 
 
 
 | 293 | 
     uses the Library", as object code and/or source code, so that the | 
 
 
 
 
 
 | 294 | 
     user can modify the Library and then relink to produce a modified | 
 
 
 
 
 
 | 295 | 
     executable containing the modified Library.  (It is understood | 
 
 
 
 
 
 | 296 | 
     that the user who changes the contents of definitions files in the | 
 
 
 
 
 
 | 297 | 
     Library will not necessarily be able to recompile the application | 
 
 
 
 
 
 | 298 | 
     to use the modified definitions.) | 
 
 
 
 
 
 | 299 | 
  | 
 
 
 
 
 
 | 300 | 
     b) Use a suitable shared library mechanism for linking with the | 
 
 
 
 
 
 | 301 | 
     Library.  A suitable mechanism is one that (1) uses at run time a | 
 
 
 
 
 
 | 302 | 
     copy of the library already present on the user's computer system, | 
 
 
 
 
 
 | 303 | 
     rather than copying library functions into the executable, and (2) | 
 
 
 
 
 
 | 304 | 
     will operate properly with a modified version of the library, if | 
 
 
 
 
 
 | 305 | 
     the user installs one, as long as the modified version is | 
 
 
 
 
 
 | 306 | 
     interface-compatible with the version that the work was made with. | 
 
 
 
 
 
 | 307 | 
  | 
 
 
 
 
 
 | 308 | 
     c) Accompany the work with a written offer, valid for at least | 
 
 
 
 
 
 | 309 | 
     three years, to give the same user the materials specified in | 
 
 
 
 
 
 | 310 | 
     Subsection 6a, above, for a charge no more than the cost of | 
 
 
 
 
 
 | 311 | 
     performing this distribution. | 
 
 
 
 
 
 | 312 | 
  | 
 
 
 
 
 
 | 313 | 
     d) If distribution of the work is made by offering access to copy | 
 
 
 
 
 
 | 314 | 
     from a designated place, offer equivalent access to copy the above | 
 
 
 
 
 
 | 315 | 
     specified materials from the same place. | 
 
 
 
 
 
 | 316 | 
  | 
 
 
 
 
 
 | 317 | 
     e) Verify that the user has already received a copy of these | 
 
 
 
 
 
 | 318 | 
     materials or that you have already sent this user a copy. | 
 
 
 
 
 
 | 319 | 
  | 
 
 
 
 
 
 | 320 | 
   For an executable, the required form of the "work that uses the | 
 
 
 
 
 
 | 321 | 
 Library" must include any data and utility programs needed for | 
 
 
 
 
 
 | 322 | 
 reproducing the executable from it.  However, as a special exception, | 
 
 
 
 
 
 | 323 | 
 the materials to be distributed need not include anything that is | 
 
 
 
 
 
 | 324 | 
 normally distributed (in either source or binary form) with the major | 
 
 
 
 
 
 | 325 | 
 components (compiler, kernel, and so on) of the operating system on | 
 
 
 
 
 
 | 326 | 
 which the executable runs, unless that component itself accompanies | 
 
 
 
 
 
 | 327 | 
 the executable. | 
 
 
 
 
 
 | 328 | 
  | 
 
 
 
 
 
 | 329 | 
   It may happen that this requirement contradicts the license | 
 
 
 
 
 
 | 330 | 
 restrictions of other proprietary libraries that do not normally | 
 
 
 
 
 
 | 331 | 
 accompany the operating system.  Such a contradiction means you cannot | 
 
 
 
 
 
 | 332 | 
 use both them and the Library together in an executable that you | 
 
 
 
 
 
 | 333 | 
 distribute. | 
 
 
 
 
 
 | 334 | 
  | 
 
 
 
 
 
 | 335 | 
   7. You may place library facilities that are a work based on the | 
 
 
 
 
 
 | 336 | 
 Library side-by-side in a single library together with other library | 
 
 
 
 
 
 | 337 | 
 facilities not covered by this License, and distribute such a combined | 
 
 
 
 
 
 | 338 | 
 library, provided that the separate distribution of the work based on | 
 
 
 
 
 
 | 339 | 
 the Library and of the other library facilities is otherwise | 
 
 
 
 
 
 | 340 | 
 permitted, and provided that you do these two things: | 
 
 
 
 
 
 | 341 | 
  | 
 
 
 
 
 
 | 342 | 
     a) Accompany the combined library with a copy of the same work | 
 
 
 
 
 
 | 343 | 
     based on the Library, uncombined with any other library | 
 
 
 
 
 
 | 344 | 
     facilities.  This must be distributed under the terms of the | 
 
 
 
 
 
 | 345 | 
     Sections above. | 
 
 
 
 
 
 | 346 | 
  | 
 
 
 
 
 
 | 347 | 
     b) Give prominent notice with the combined library of the fact | 
 
 
 
 
 
 | 348 | 
     that part of it is a work based on the Library, and explaining | 
 
 
 
 
 
 | 349 | 
     where to find the accompanying uncombined form of the same work. | 
 
 
 
 
 
 | 350 | 
  | 
 
 
 
 
 
 | 351 | 
   8. You may not copy, modify, sublicense, link with, or distribute | 
 
 
 
 
 
 | 352 | 
 the Library except as expressly provided under this License.  Any | 
 
 
 
 
 
 | 353 | 
 attempt otherwise to copy, modify, sublicense, link with, or | 
 
 
 
 
 
 | 354 | 
 distribute the Library is void, and will automatically terminate your | 
 
 
 
 
 
 | 355 | 
 rights under this License.  However, parties who have received copies, | 
 
 
 
 
 
 | 356 | 
 or rights, from you under this License will not have their licenses | 
 
 
 
 
 
 | 357 | 
 terminated so long as such parties remain in full compliance. | 
 
 
 
 
 
 | 358 | 
  | 
 
 
 
 
 
 | 359 | 
   9. You are not required to accept this License, since you have not | 
 
 
 
 
 
 | 360 | 
 signed it.  However, nothing else grants you permission to modify or | 
 
 
 
 
 
 | 361 | 
 distribute the Library or its derivative works.  These actions are | 
 
 
 
 
 
 | 362 | 
 prohibited by law if you do not accept this License.  Therefore, by | 
 
 
 
 
 
 | 363 | 
 modifying or distributing the Library (or any work based on the | 
 
 
 
 
 
 | 364 | 
 Library), you indicate your acceptance of this License to do so, and | 
 
 
 
 
 
 | 365 | 
 all its terms and conditions for copying, distributing or modifying | 
 
 
 
 
 
 | 366 | 
 the Library or works based on it. | 
 
 
 
 
 
 | 367 | 
  | 
 
 
 
 
 
 | 368 | 
   10. Each time you redistribute the Library (or any work based on the | 
 
 
 
 
 
 | 369 | 
 Library), the recipient automatically receives a license from the | 
 
 
 
 
 
 | 370 | 
 original licensor to copy, distribute, link with or modify the Library | 
 
 
 
 
 
 | 371 | 
 subject to these terms and conditions.  You may not impose any further | 
 
 
 
 
 
 | 372 | 
 restrictions on the recipients' exercise of the rights granted herein. | 
 
 
 
 
 
 | 373 | 
 You are not responsible for enforcing compliance by third parties with | 
 
 
 
 
 
 | 374 | 
 this License. | 
 
 
 
 
 
 | 375 | 
  | 
 
 
 
 
 
 | 376 | 
   11. If, as a consequence of a court judgment or allegation of patent | 
 
 
 
 
 
 | 377 | 
 infringement or for any other reason (not limited to patent issues), | 
 
 
 
 
 
 | 378 | 
 conditions are imposed on you (whether by court order, agreement or | 
 
 
 
 
 
 | 379 | 
 otherwise) that contradict the conditions of this License, they do not | 
 
 
 
 
 
 | 380 | 
 excuse you from the conditions of this License.  If you cannot | 
 
 
 
 
 
 | 381 | 
 distribute so as to satisfy simultaneously your obligations under this | 
 
 
 
 
 
 | 382 | 
 License and any other pertinent obligations, then as a consequence you | 
 
 
 
 
 
 | 383 | 
 may not distribute the Library at all.  For example, if a patent | 
 
 
 
 
 
 | 384 | 
 license would not permit royalty-free redistribution of the Library by | 
 
 
 
 
 
 | 385 | 
 all those who receive copies directly or indirectly through you, then | 
 
 
 
 
 
 | 386 | 
 the only way you could satisfy both it and this License would be to | 
 
 
 
 
 
 | 387 | 
 refrain entirely from distribution of the Library. | 
 
 
 
 
 
 | 388 | 
  | 
 
 
 
 
 
 | 389 | 
 If any portion of this section is held invalid or unenforceable under | 
 
 
 
 
 
 | 390 | 
 any particular circumstance, the balance of the section is intended to | 
 
 
 
 
 
 | 391 | 
 apply, and the section as a whole is intended to apply in other | 
 
 
 
 
 
 | 392 | 
 circumstances. | 
 
 
 
 
 
 | 393 | 
  | 
 
 
 
 
 
 | 394 | 
 It is not the purpose of this section to induce you to infringe any | 
 
 
 
 
 
 | 395 | 
 patents or other property right claims or to contest validity of any | 
 
 
 
 
 
 | 396 | 
 such claims; this section has the sole purpose of protecting the | 
 
 
 
 
 
 | 397 | 
 integrity of the free software distribution system which is | 
 
 
 
 
 
 | 398 | 
 implemented by public license practices.  Many people have made | 
 
 
 
 
 
 | 399 | 
 generous contributions to the wide range of software distributed | 
 
 
 
 
 
 | 400 | 
 through that system in reliance on consistent application of that | 
 
 
 
 
 
 | 401 | 
 system; it is up to the author/donor to decide if he or she is willing | 
 
 
 
 
 
 | 402 | 
 to distribute software through any other system and a licensee cannot | 
 
 
 
 
 
 | 403 | 
 impose that choice. | 
 
 
 
 
 
 | 404 | 
  | 
 
 
 
 
 
 | 405 | 
 This section is intended to make thoroughly clear what is believed to | 
 
 
 
 
 
 | 406 | 
 be a consequence of the rest of this License. | 
 
 
 
 
 
 | 407 | 
  | 
 
 
 
 
 
 | 408 | 
   12. If the distribution and/or use of the Library is restricted in | 
 
 
 
 
 
 | 409 | 
 certain countries either by patents or by copyrighted interfaces, the | 
 
 
 
 
 
 | 410 | 
 original copyright holder who places the Library under this License | 
 
 
 
 
 
 | 411 | 
 may add an explicit geographical distribution limitation excluding those | 
 
 
 
 
 
 | 412 | 
 countries, so that distribution is permitted only in or among | 
 
 
 
 
 
 | 413 | 
 countries not thus excluded.  In such case, this License incorporates | 
 
 
 
 
 
 | 414 | 
 the limitation as if written in the body of this License. | 
 
 
 
 
 
 | 415 | 
  | 
 
 
 
 
 
 | 416 | 
   13. The Free Software Foundation may publish revised and/or new | 
 
 
 
 
 
 | 417 | 
 versions of the Lesser General Public License from time to time. | 
 
 
 
 
 
 | 418 | 
 Such new versions will be similar in spirit to the present version, | 
 
 
 
 
 
 | 419 | 
 but may differ in detail to address new problems or concerns. | 
 
 
 
 
 
 | 420 | 
  | 
 
 
 
 
 
 | 421 | 
 Each version is given a distinguishing version number.  If the Library | 
 
 
 
 
 
 | 422 | 
 specifies a version number of this License which applies to it and | 
 
 
 
 
 
 | 423 | 
 "any later version", you have the option of following the terms and | 
 
 
 
 
 
 | 424 | 
 conditions either of that version or of any later version published by | 
 
 
 
 
 
 | 425 | 
 the Free Software Foundation.  If the Library does not specify a | 
 
 
 
 
 
 | 426 | 
 license version number, you may choose any version ever published by | 
 
 
 
 
 
 | 427 | 
 the Free Software Foundation. | 
 
 
 
 
 
 | 428 | 
  | 
 
 
 
 
 
 | 429 | 
   14. If you wish to incorporate parts of the Library into other free | 
 
 
 
 
 
 | 430 | 
 programs whose distribution conditions are incompatible with these, | 
 
 
 
 
 
 | 431 | 
 write to the author to ask for permission.  For software which is | 
 
 
 
 
 
 | 432 | 
 copyrighted by the Free Software Foundation, write to the Free | 
 
 
 
 
 
 | 433 | 
 Software Foundation; we sometimes make exceptions for this.  Our | 
 
 
 
 
 
 | 434 | 
 decision will be guided by the two goals of preserving the free status | 
 
 
 
 
 
 | 435 | 
 of all derivatives of our free software and of promoting the sharing | 
 
 
 
 
 
 | 436 | 
 and reuse of software generally. | 
 
 
 
 
 
 | 437 | 
  | 
 
 
 
 
 
 | 438 | 
                             NO WARRANTY | 
 
 
 
 
 
 | 439 | 
  | 
 
 
 
 
 
 | 440 | 
   15. BECAUSE THE LIBRARY IS LICENSED FREE OF CHARGE, THERE IS NO | 
 
 
 
 
 
 | 441 | 
 WARRANTY FOR THE LIBRARY, TO THE EXTENT PERMITTED BY APPLICABLE LAW. | 
 
 
 
 
 
 | 442 | 
 EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR | 
 
 
 
 
 
 | 443 | 
 OTHER PARTIES PROVIDE THE LIBRARY "AS IS" WITHOUT WARRANTY OF ANY | 
 
 
 
 
 
 | 444 | 
 KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE | 
 
 
 
 
 
 | 445 | 
 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | 
 
 
 
 
 
 | 446 | 
 PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE | 
 
 
 
 
 
 | 447 | 
 LIBRARY IS WITH YOU.  SHOULD THE LIBRARY PROVE DEFECTIVE, YOU ASSUME | 
 
 
 
 
 
 | 448 | 
 THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION. | 
 
 
 
 
 
 | 449 | 
  | 
 
 
 
 
 
 | 450 | 
   16. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN | 
 
 
 
 
 
 | 451 | 
 WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY | 
 
 
 
 
 
 | 452 | 
 AND/OR REDISTRIBUTE THE LIBRARY AS PERMITTED ABOVE, BE LIABLE TO YOU | 
 
 
 
 
 
 | 453 | 
 FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR | 
 
 
 
 
 
 | 454 | 
 CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE | 
 
 
 
 
 
 | 455 | 
 LIBRARY (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING | 
 
 
 
 
 
 | 456 | 
 RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A | 
 
 
 
 
 
 | 457 | 
 FAILURE OF THE LIBRARY TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF | 
 
 
 
 
 
 | 458 | 
 SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH | 
 
 
 
 
 
 | 459 | 
 DAMAGES. | 
 
 
 
 
 
 | 460 | 
  | 
 
 
 
 
 
 | 461 | 
                      END OF TERMS AND CONDITIONS | 
 
 
 
 
 
 | 462 | 
  | 
 
 
 
 
 
 | 463 | 
            How to Apply These Terms to Your New Libraries | 
 
 
 
 
 
 | 464 | 
  | 
 
 
 
 
 
 | 465 | 
   If you develop a new library, and you want it to be of the greatest | 
 
 
 
 
 
 | 466 | 
 possible use to the public, we recommend making it free software that | 
 
 
 
 
 
 | 467 | 
 everyone can redistribute and change.  You can do so by permitting | 
 
 
 
 
 
 | 468 | 
 redistribution under these terms (or, alternatively, under the terms | 
 
 
 
 
 
 | 469 | 
 of the ordinary General Public License). | 
 
 
 
 
 
 | 470 | 
  | 
 
 
 
 
 
 | 471 | 
   To apply these terms, attach the following notices to the library. | 
 
 
 
 
 
 | 472 | 
 It is safest to attach them to the start of each source file to most | 
 
 
 
 
 
 | 473 | 
 effectively convey the exclusion of warranty; and each file should | 
 
 
 
 
 
 | 474 | 
 have at least the "copyright" line and a pointer to where the full | 
 
 
 
 
 
 | 475 | 
 notice is found. | 
 
 
 
 
 
 | 476 | 
  | 
 
 
 
 
 
 | 477 | 
  | 
 
 
 
 
 
 | 478 | 
     <one line to give the library's name and a brief idea of what it does.> | 
 
 
 
 
 
 | 479 | 
     Copyright (C) <year>  <name of author> | 
 
 
 
 
 
 | 480 | 
  | 
 
 
 
 
 
 | 481 | 
     This library is free software; you can redistribute it and/or | 
 
 
 
 
 
 | 482 | 
     modify it under the terms of the GNU Lesser General Public | 
 
 
 
 
 
 | 483 | 
     License as published by the Free Software Foundation; either | 
 
 
 
 
 
 | 484 | 
     version 2.1 of the License, or (at your option) any later version. | 
 
 
 
 
 
 | 485 | 
  | 
 
 
 
 
 
 | 486 | 
     This library is distributed in the hope that it will be useful, | 
 
 
 
 
 
 | 487 | 
     but WITHOUT ANY WARRANTY; without even the implied warranty of | 
 
 
 
 
 
 | 488 | 
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU | 
 
 
 
 
 
 | 489 | 
     Lesser General Public License for more details. | 
 
 
 
 
 
 | 490 | 
  | 
 
 
 
 
 
 | 491 | 
     You should have received a copy of the GNU Lesser General Public | 
 
 
 
 
 
 | 492 | 
     License along with this library; if not, write to the Free Software | 
 
 
 
 
 
 | 493 | 
     Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA | 
 
 
 
 
 
 | 494 | 
  | 
 
 
 
 
 
 | 495 | 
 Also add information on how to contact you by electronic and paper mail. | 
 
 
 
 
 
 | 496 | 
  | 
 
 
 
 
 
 | 497 | 
 You should also get your employer (if you work as a programmer) or | 
 
 
 
 
 
 | 498 | 
 your school, if any, to sign a "copyright disclaimer" for the library, | 
 
 
 
 
 
 | 499 | 
 if necessary.  Here is a sample; alter the names: | 
 
 
 
 
 
 | 500 | 
  | 
 
 
 
 
 
 | 501 | 
   Yoyodyne, Inc., hereby disclaims all copyright interest in the | 
 
 
 
 
 
 | 502 | 
   library `Frob' (a library for tweaking knobs) written by James | 
 
 
 
 
 
 | 503 | 
   Random Hacker. | 
 
 
 
 
 
 | 504 | 
  | 
 
 
 
 
 
 | 505 | 
   <signature of Ty Coon>, 1 April 1990 | 
 
 
 
 
 
 | 506 | 
   Ty Coon, President of Vice | 
 
 
 
 
 
 | 507 | 
  | 
 
 
 
 
 
 | 508 | 
 That's all there is to it! | 
 
 
 
 
 
 | 509 | 
  | 
 
 
 
 
 
 | 510 | 
  |