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dn243-1b1.pdf
moreau1996 - 2013-10-03
http://www.orion-electric.co.jp/.../dn243-1b1.pdf - 6.72MB - キャッシュ
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80page / 6.72MB
71その他GNU LESSER GENERAL PUBLIC LICENSEVersion 2.1, February 1999Copyright (C) 1991, 1999 Free Software Foundation, Inc.51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed.[This is the i rst released version of the Lesser GPL. It also counts as the successor of the GNU Library Public License, version 2, hence the version number 2.1.]PreambleThe licenses for most software are designed to take away your freedom to share and change it. By contrast, the GNU General Public Licenses are intended to guarantee your freedom to share and change free software--to make sure the software is free for all its users.This license, the Lesser General Public License, applies to some specially designated software packages--typically libraries--of the Free Software Foundation and other authors who decide to use it. You can use it too, but we suggest you i rst think carefully about whether this license or the ordinary General Public License is the betterstrategy to use in any particular case, based on the explanations below.When we speak of free software, we are referring to freedom of use, not price. Our General Public Licenses are designed to make sure that you have the freedom todistribute copies of free software (and charge for this service if you wish); that you receive source code or can get it if you want it; that you can change the software anduse pieces of it in new free programs; and that you are informed that you can do these things.To protect your rights, we need to make restrictions that forbid distributors to deny you these rights or to ask you to surrender these rights. These restrictions translate tocertain responsibilities for you if you distribute copies of the library or if you modify it.For example, if you distribute copies of the library, whether gratis or for a fee, you must give the recipients all the rights that we gave you. You must make sure that they, too, receive or can get the source code. If you link other code with the library, you must provide complete object i les to the recipients, so that they can relink them with the library after making changes to the library and recompiling it. And you must show them these terms so they know their rights.We protect your rights with a two-step method: (1) we copyright the library, and (2) we offer you this license, which gives you legal permission to copy, distribute and/ormodify the library.To protect each distributor, we want to make it very clear that there is no warranty for the free library. Also, if the library is modii ed by someone else and passed on, the recipients should know that what they have is not the original version, so that the original author’s reputation will not be affected by problems that might be introduced by others.Finally, software patents pose a constant threat to the existence of any free program. We wish to make sure that a company cannot effectively restrict the users of a freeprogram by obtaining a restrictive license from a patent holder. Therefore, we insist that any patent license obtained for a version of the library must be consistent with the full freedom of use specii ed in this license.Most GNU software, including some libraries, is covered by the ordinary GNU General Public License. This license, the GNU Lesser General Public License, applies to certain designated libraries, and is quite different from the ordinary General Public License. We use this license for certain libraries in order to permit linking those libraries into non-free programs.When a program is linked with a library, whether statically or using a shared library, the combination of the two is legally speaking a combined work, a derivative of theoriginal library. The ordinary General Public License therefore permits such linking only if the entire combination i ts its criteria of freedom. The Lesser General Public License permits more lax criteria for linking other code with the library.We call this license the ”Lesser” General Public License because it does Less to protect the user’s freedom than the ordinary General Public License. It also providesother free software developers Less of an advantage over competing non-free programs. These disadvantages are the reason we use the ordinary General PublicLicense for many libraries. However, the Lesser license provides advantages in certain special circumstances.For example, on rare occasions, there may be a special need to encourage the widest possible use of a certain library, so that it becomes a de-facto standard. To achievethis, non-free programs must be allowed to use the library. A more frequent case is that a free library does the same job as widely used non-free libraries. In this case, there is little to gain by limiting the free library to free software only, so we use the Lesser General Public License.In other cases, permission to use a particular library in non-free programs enables a greater number of people to use a large body of free software. For example,permission to use the GNU C Library in non-free programs enables many more people to use the whole GNU operating system, as well as its variant, the GNU/Linuxoperating system.Although the Lesser General Public License is Less protective of the users’ freedom, it does ensure that the user of a program that is linked with the Library has thefreedom and the wherewithal to run that program using a modii ed version of the Library.The precise terms and conditions for copying, distribution and modii cation follow. Pay close attention to the difference between a “work based on the library” and a “work that uses the library”. The former contains code derived from the library, whereas the latter must be combined with the library in order to run.GNU LESSER GENERAL PUBLIC LICENSETERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION0. This License Agreement applies to any software library or other program which contains a notice placed by the copyright holder or other authorized party saying it may be distributed under the terms of this Lesser General Public License (also called “this License”).Each licensee is addressed as “you” . A “library” means a collection of software functions and/or data prepared so as to be conveniently linked with application programs (which use some of those functions and data) to form executables.J3 P R 0 1 0 1 B _ JP . i n d b 7 1 J3PR0101B_JP.indb 71 1 2 / 1 1 / 2 0 1 2 2 : 1 1 : 5 7 P M 12/11/2012 2:11:57 PM
