📄 lgpl.html.svn-base
字号:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<head>
<title>GNU Lesser General Public License</title>
<meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5">
<STYLE>
BODY { FONT-SIZE: 12px }
</STYLE>
</head>
<body>
<H3>GNU Lesser General Public License</H3>
<TT>
<P>Version 2.1, February 1999</P>
<BLOCKQUOTE>
<P>Copyright (C) 1991, 1999 Free Software Foundation, Inc. 59 Temple Place, Suite
330, Boston, MA 02111-1307 USA Everyone is permitted to copy and distribute
verbatim copies of this license document, but changing it is not allowed.</P>
<P>[This is the first 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.]</P>
</BLOCKQUOTE>
<H4>Preamble</H4>
<P>The 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.
</P>
<P>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 first think carefully about whether this license or the ordinary
General Public License is the better strategy to use in any particular case,
based on the explanations below.
</P>
<P>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
to distribute 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 and use pieces of it in new free programs; and that you are
informed that you can do these things.</P>
<P>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 to certain responsibilities for you if you distribute
copies of the library or if you modify it.
</P>
<P>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 files 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.
</P>
<P>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/or modify the library.
</P>
<P>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 modified 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.
</P>
<P>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 free program 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 specified in this
license.
</P>
<P>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.
</P>
<P>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 the original library. The ordinary General Public License
therefore permits such linking only if the entire combination fits its criteria
of freedom. The Lesser General Public License permits more lax criteria for
linking other code with the library.
</P>
<P>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
provides other free software developers Less of an advantage over competing
non-free programs. These disadvantages are the reason we use the ordinary
General Public License for many libraries. However, the Lesser license provides
advantages in certain special circumstances.
</P>
<P>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 achieve this, 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.
</P>
<P>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/Linux operating system.
</P>
<P>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 the freedom and the wherewithal to run that program using a
modified version of the Library.
</P>
<P>The precise terms and conditions for copying, distribution and modification
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.
</P>
<H4>TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION</H4>
<P><STRONG>0.</STRONG> 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".</P>
<P>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.
</P>
<P>The "Library", below, refers to any such software library or work which has been
distributed under these terms. A "work based on the Library" means either the
Library or any derivative work under copyright law: that is to say, a work
containing the Library or a portion of it, either verbatim or with
modifications and/or translated straightforwardly into another language.
(Hereinafter, translation is included without limitation in the term
"modification".)
</P>
<P>"Source code" for a work means the preferred form of the work for making
modifications to it. For a library, complete source code means all the source
code for all modules it contains, plus any associated interface definition
files, plus the scripts used to control compilation and installation of the
library.</P>
<P>Activities other than copying, distribution and modification are not covered by
this License; they are outside its scope. The act of running a program using
the Library is not restricted, and output from such a program is covered only
if its contents constitute a work based on the Library (independent of the use
of the Library in a tool for writing it). Whether that is true depends on what
the Library does and what the program that uses the Library does.
</P>
<P><STRONG>1.</STRONG> You may copy and distribute verbatim copies of the Library's
complete source code as you receive it, in any medium, provided that you
conspicuously and appropriately publish on each copy an appropriate copyright
notice and disclaimer of warranty; keep intact all the notices that refer to
this License and to the absence of any warranty; and distribute a copy of this
License along with the Library.
</P>
<P>You may charge a fee for the physical act of transferring a copy, and you may at
your option offer warranty protection in exchange for a fee.
</P>
<P><STRONG>2.</STRONG> You may modify your copy or copies of the Library or any
portion of it, thus forming a work based on the Library, and copy and
distribute such modifications or work under the terms of Section 1 above,
provided that you also meet all of these conditions:
</P>
<BLOCKQUOTE>
<P>a) The modified work must itself be a software library.
</P>
<P>b) You must cause the files modified to carry prominent notices stating that you
changed the files and the date of any change.</P>
<P>c) You must cause the whole of the work to be licensed at no charge to all third
parties under the terms of this License.
</P>
<P>d) If a facility in the modified Library refers to a function or a table of data
to be supplied by an application program that uses the facility, other than as
an argument passed when the facility is invoked, then you must make a good
faith effort to ensure that, in the event an application does not supply such
function or table, the facility still operates, and performs whatever part of
its purpose remains meaningful.
</P>
<P>(For example, a function in a library to compute square roots has a purpose that
is entirely well-defined independent of the application. Therefore, Subsection
2d requires that any application-supplied function or table used by this
function must be optional: if the application does not supply it, the square
root function must still compute square roots.)
</P>
<P>These requirements apply to the modified work as a whole. If identifiable
sections of that work are not derived from the Library, and can be reasonably
considered independent and separate works in themselves, then this License, and
its terms, do not apply to those sections when you distribute them as separate
works. But when you distribute the same sections as part of a whole which is a
work based on the Library, the distribution of the whole must be on the terms
of this License, whose permissions for other licensees extend to the entire
whole, and thus to each and every part regardless of who wrote it.
</P>
<P>Thus, it is not the intent of this section to claim rights or contest your
rights to work written entirely by you; rather, the intent is to exercise the
right to control the distribution of derivative or collective works based on
the Library.
</P>
<P>In addition, mere aggregation of another work not based on the Library with the
Library (or with a work based on the Library) on a volume of a storage or
distribution medium does not bring the other work under the scope of this
License.
</P>
</BLOCKQUOTE>
<P><STRONG>3.</STRONG> You may opt to apply the terms of the ordinary GNU General
Public License instead of this License to a given copy of the Library. To do
this, you must alter all the notices that refer to this License, so that they
refer to the ordinary GNU General Public License, version 2, instead of to this
License. (If a newer version than version 2 of the ordinary GNU General Public
License has appeared, then you can specify that version instead if you wish.)
Do not make any other change in these notices.
</P>
<P>Once this change is made in a given copy, it is irreversible for that copy, so
the ordinary GNU General Public License applies to all subsequent copies and
derivative works made from that copy.
</P>
<P>This option is useful when you wish to copy part of the code of the Library into
a program that is not a library.
</P>
<P><STRONG>4.</STRONG> You may copy and distribute the Library (or a portion or
derivative of it, under Section 2) in object code or executable form under the
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -