Mercurial > sdl-ios-xcode
annotate COPYING @ 3384:04af265172f9
Continue working on 2D support in Photon.
| author | Mike Gorchak <lestat@i.com.ua> |
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| date | Mon, 12 Oct 2009 08:21:43 +0000 |
| parents | e1b8e1b97b67 |
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| rev | line source |
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1 GNU LESSER GENERAL PUBLIC LICENSE |
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2 Version 2.1, February 1999 |
| 0 | 3 |
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4 Copyright (C) 1991, 1999 Free Software Foundation, Inc. |
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5 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 0 | 6 Everyone is permitted to copy and distribute verbatim copies |
| 7 of this license document, but changing it is not allowed. | |
| 8 | |
|
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9 [This is the first released version of the Lesser GPL. It also counts |
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10 as the successor of the GNU Library Public License, version 2, hence |
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11 the version number 2.1.] |
| 0 | 12 |
| 13 Preamble | |
| 14 | |
| 15 The licenses for most software are designed to take away your | |
| 16 freedom to share and change it. By contrast, the GNU General Public | |
| 17 Licenses are intended to guarantee your freedom to share and change | |
| 18 free software--to make sure the software is free for all its users. | |
| 19 | |
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20 This license, the Lesser General Public License, applies to some |
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21 specially designated software packages--typically libraries--of the |
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22 Free Software Foundation and other authors who decide to use it. You |
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23 can use it too, but we suggest you first think carefully about whether |
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24 this license or the ordinary General Public License is the better |
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25 strategy to use in any particular case, based on the explanations below. |
| 0 | 26 |
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27 When we speak of free software, we are referring to freedom of use, |
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28 not price. Our General Public Licenses are designed to make sure that |
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29 you have the freedom to distribute copies of free software (and charge |
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30 for this service if you wish); that you receive source code or can get |
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31 it if you want it; that you can change the software and use pieces of |
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32 it in new free programs; and that you are informed that you can do |
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33 these things. |
| 0 | 34 |
| 35 To protect your rights, we need to make restrictions that forbid | |
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36 distributors to deny you these rights or to ask you to surrender these |
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37 rights. These restrictions translate to certain responsibilities for |
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38 you if you distribute copies of the library or if you modify it. |
| 0 | 39 |
| 40 For example, if you distribute copies of the library, whether gratis | |
| 41 or for a fee, you must give the recipients all the rights that we gave | |
| 42 you. You must make sure that they, too, receive or can get the source | |
|
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43 code. If you link other code with the library, you must provide |
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44 complete object files to the recipients, so that they can relink them |
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45 with the library after making changes to the library and recompiling |
| 0 | 46 it. And you must show them these terms so they know their rights. |
| 47 | |
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48 We protect your rights with a two-step method: (1) we copyright the |
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49 library, and (2) we offer you this license, which gives you legal |
| 0 | 50 permission to copy, distribute and/or modify the library. |
| 51 | |
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52 To protect each distributor, we want to make it very clear that |
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53 there is no warranty for the free library. Also, if the library is |
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54 modified by someone else and passed on, the recipients should know |
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55 that what they have is not the original version, so that the original |
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56 author's reputation will not be affected by problems that might be |
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57 introduced by others. |
| 0 | 58 |
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59 Finally, software patents pose a constant threat to the existence of |
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60 any free program. We wish to make sure that a company cannot |
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61 effectively restrict the users of a free program by obtaining a |
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62 restrictive license from a patent holder. Therefore, we insist that |
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63 any patent license obtained for a version of the library must be |
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64 consistent with the full freedom of use specified in this license. |
| 0 | 65 |
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66 Most GNU software, including some libraries, is covered by the |
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67 ordinary GNU General Public License. This license, the GNU Lesser |
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68 General Public License, applies to certain designated libraries, and |
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69 is quite different from the ordinary General Public License. We use |
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70 this license for certain libraries in order to permit linking those |
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71 libraries into non-free programs. |
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73 When a program is linked with a library, whether statically or using |
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74 a shared library, the combination of the two is legally speaking a |
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75 combined work, a derivative of the original library. The ordinary |
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76 General Public License therefore permits such linking only if the |
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77 entire combination fits its criteria of freedom. The Lesser General |
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78 Public License permits more lax criteria for linking other code with |
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79 the library. |
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80 |
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81 We call this license the "Lesser" General Public License because it |
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82 does Less to protect the user's freedom than the ordinary General |
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83 Public License. It also provides other free software developers Less |
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84 of an advantage over competing non-free programs. These disadvantages |
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85 are the reason we use the ordinary General Public License for many |
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86 libraries. However, the Lesser license provides advantages in certain |
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87 special circumstances. |
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89 For example, on rare occasions, there may be a special need to |
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90 encourage the widest possible use of a certain library, so that it becomes |
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91 a de-facto standard. To achieve this, non-free programs must be |
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92 allowed to use the library. A more frequent case is that a free |
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93 library does the same job as widely used non-free libraries. In this |
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94 case, there is little to gain by limiting the free library to free |
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95 software only, so we use the Lesser General Public License. |
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97 In other cases, permission to use a particular library in non-free |
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98 programs enables a greater number of people to use a large body of |
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99 free software. For example, permission to use the GNU C Library in |
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100 non-free programs enables many more people to use the whole GNU |
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101 operating system, as well as its variant, the GNU/Linux operating |
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102 system. |
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103 |
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104 Although the Lesser General Public License is Less protective of the |
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105 users' freedom, it does ensure that the user of a program that is |
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106 linked with the Library has the freedom and the wherewithal to run |
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107 that program using a modified version of the Library. |
| 0 | 108 |
| 109 The precise terms and conditions for copying, distribution and | |
| 110 modification follow. Pay close attention to the difference between a | |
| 111 "work based on the library" and a "work that uses the library". The | |
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112 former contains code derived from the library, whereas the latter must |
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113 be combined with the library in order to run. |
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115 GNU LESSER GENERAL PUBLIC LICENSE |
| 0 | 116 TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION |
| 117 | |
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118 0. This License Agreement applies to any software library or other |
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119 program which contains a notice placed by the copyright holder or |
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120 other authorized party saying it may be distributed under the terms of |
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121 this Lesser General Public License (also called "this License"). |
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122 Each licensee is addressed as "you". |
| 0 | 123 |
| 124 A "library" means a collection of software functions and/or data | |
| 125 prepared so as to be conveniently linked with application programs | |
| 126 (which use some of those functions and data) to form executables. | |
| 127 | |
| 128 The "Library", below, refers to any such software library or work | |
| 129 which has been distributed under these terms. A "work based on the | |
| 130 Library" means either the Library or any derivative work under | |
| 131 copyright law: that is to say, a work containing the Library or a | |
| 132 portion of it, either verbatim or with modifications and/or translated | |
| 133 straightforwardly into another language. (Hereinafter, translation is | |
| 134 included without limitation in the term "modification".) | |
| 135 | |
| 136 "Source code" for a work means the preferred form of the work for | |
| 137 making modifications to it. For a library, complete source code means | |
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|
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271 6. As an exception to the Sections above, you may also combine or |
| 0 | 272 link a "work that uses the Library" with the Library to produce a |
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298 b) Use a suitable shared library mechanism for linking with the |
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299 Library. A suitable mechanism is one that (1) uses at run time a |
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300 copy of the library already present on the user's computer system, |
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301 rather than copying library functions into the executable, and (2) |
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302 will operate properly with a modified version of the library, if |
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303 the user installs one, as long as the modified version is |
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304 interface-compatible with the version that the work was made with. |
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305 |
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306 c) Accompany the work with a written offer, valid for at |
| 0 | 307 least three years, to give the same user the materials |
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| 309 than the cost of performing this distribution. | |
| 310 | |
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311 d) If distribution of the work is made by offering access to copy |
| 0 | 312 from a designated place, offer equivalent access to copy the above |
| 313 specified materials from the same place. | |
| 314 | |
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315 e) Verify that the user has already received a copy of these |
| 0 | 316 materials or that you have already sent this user a copy. |
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|
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321 the materials to be distributed need not include anything that is |
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322 normally distributed (in either source or binary form) with the major |
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371 You are not responsible for enforcing compliance by third parties with |
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414 versions of the Lesser General Public License from time to time. |
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