mirror of
https://codeberg.org/forgejo/forgejo.git
synced 2024-11-24 19:42:43 +01:00
468 lines
25 KiB
Text
468 lines
25 KiB
Text
GNU LESSER GENERAL PUBLIC LICENSE
|
|
|
|
Version 2.1, February 1999
|
|
|
|
Copyright (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 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.]
|
|
|
|
Preamble
|
|
|
|
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.
|
|
|
|
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.
|
|
|
|
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.
|
|
|
|
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.
|
|
|
|
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.
|
|
|
|
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.
|
|
|
|
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.
|
|
|
|
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.
|
|
|
|
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 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.
|
|
|
|
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.
|
|
|
|
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.
|
|
|
|
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.
|
|
|
|
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.
|
|
|
|
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.
|
|
|
|
TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
|
|
|
|
0. 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.
|
|
|
|
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".)
|
|
|
|
"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.
|
|
|
|
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.
|
|
|
|
1. 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.
|
|
|
|
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.
|
|
|
|
2. 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:
|
|
|
|
a) The modified work must itself be a software library.
|
|
|
|
b) You must cause the files modified to carry prominent notices stating that
|
|
you changed the files and the date of any change.
|
|
|
|
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.
|
|
|
|
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.
|
|
|
|
(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.)
|
|
|
|
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.
|
|
|
|
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.
|
|
|
|
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.
|
|
|
|
3. 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.
|
|
|
|
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.
|
|
|
|
This option is useful when you wish to copy part of the code of the Library
|
|
into a program that is not a library.
|
|
|
|
4. 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 terms of
|
|
Sections 1 and 2 above provided that you accompany it with the complete corresponding
|
|
machine-readable source code, which must be distributed under the terms of
|
|
Sections 1 and 2 above on a medium customarily used for software interchange.
|
|
|
|
If distribution of object code is made by offering access to copy from a designated
|
|
place, then offering equivalent access to copy the source code from the same
|
|
place satisfies the requirement to distribute the source code, even though
|
|
third parties are not compelled to copy the source along with the object code.
|
|
|
|
5. A program that contains no derivative of any portion of the Library, but
|
|
is designed to work with the Library by being compiled or linked with it,
|
|
is called a "work that uses the Library". Such a work, in isolation, is not
|
|
a derivative work of the Library, and therefore falls outside the scope of
|
|
this License.
|
|
|
|
However, linking a "work that uses the Library" with the Library creates an
|
|
executable that is a derivative of the Library (because it contains portions
|
|
of the Library), rather than a "work that uses the library". The executable
|
|
is therefore covered by this License. Section 6 states terms for distribution
|
|
of such executables.
|
|
|
|
When a "work that uses the Library" uses material from a header file that
|
|
is part of the Library, the object code for the work may be a derivative work
|
|
of the Library even though the source code is not. Whether this is true is
|
|
especially significant if the work can be linked without the Library, or if
|
|
the work is itself a library. The threshold for this to be true is not precisely
|
|
defined by law.
|
|
|
|
If such an object file uses only numerical parameters, data structure layouts
|
|
and accessors, and small macros and small inline functions (ten lines or less
|
|
in length), then the use of the object file is unrestricted, regardless of
|
|
whether it is legally a derivative work. (Executables containing this object
|
|
code plus portions of the Library will still fall under Section 6.)
|
|
|
|
Otherwise, if the work is a derivative of the Library, you may distribute
|
|
the object code for the work under the terms of Section 6. Any executables
|
|
containing that work also fall under Section 6, whether or not they are linked
|
|
directly with the Library itself.
|
|
|
|
6. As an exception to the Sections above, you may also combine or link a "work
|
|
that uses the Library" with the Library to produce a work containing portions
|
|
of the Library, and distribute that work under terms of your choice, provided
|
|
that the terms permit modification of the work for the customer's own use
|
|
and reverse engineering for debugging such modifications.
|
|
|
|
You must give prominent notice with each copy of the work that the Library
|
|
is used in it and that the Library and its use are covered by this License.
|
|
You must supply a copy of this License. If the work during execution displays
|
|
copyright notices, you must include the copyright notice for the Library among
|
|
them, as well as a reference directing the user to the copy of this License.
|
|
Also, you must do one of these things:
|
|
|
|
a) Accompany the work with the complete corresponding machine-readable source
|
|
code for the Library including whatever changes were used in the work (which
|
|
must be distributed under Sections 1 and 2 above); and, if the work is an
|
|
executable linked with the Library, with the complete machine-readable "work
|
|
that uses the Library", as object code and/or source code, so that the user
|
|
can modify the Library and then relink to produce a modified executable containing
|
|
the modified Library. (It is understood that the user who changes the contents
|
|
of definitions files in the Library will not necessarily be able to recompile
|
|
the application to use the modified definitions.)
|
|
|
|
b) Use a suitable shared library mechanism for linking with the Library. A
|
|
suitable mechanism is one that (1) uses at run time a copy of the library
|
|
already present on the user's computer system, rather than copying library
|
|
functions into the executable, and (2) will operate properly with a modified
|
|
version of the library, if the user installs one, as long as the modified
|
|
version is interface-compatible with the version that the work was made with.
|
|
|
|
c) Accompany the work with a written offer, valid for at least three years,
|
|
to give the same user the materials specified in Subsection 6a, above, for
|
|
a charge no more than the cost of performing this distribution.
|
|
|
|
d) If distribution of the work is made by offering access to copy from a designated
|
|
place, offer equivalent access to copy the above specified materials from
|
|
the same place.
|
|
|
|
e) Verify that the user has already received a copy of these materials or
|
|
that you have already sent this user a copy.
|
|
|
|
For an executable, the required form of the "work that uses the Library" must
|
|
include any data and utility programs needed for reproducing the executable
|
|
from it. However, as a special exception, the materials to be distributed
|
|
need not include anything that is normally distributed (in either source or
|
|
binary form) with the major components (compiler, kernel, and so on) of the
|
|
operating system on which the executable runs, unless that component itself
|
|
accompanies the executable.
|
|
|
|
It may happen that this requirement contradicts the license restrictions of
|
|
other proprietary libraries that do not normally accompany the operating system.
|
|
Such a contradiction means you cannot use both them and the Library together
|
|
in an executable that you distribute.
|
|
|
|
7. You may place library facilities that are a work based on the Library side-by-side
|
|
in a single library together with other library facilities not covered by
|
|
this License, and distribute such a combined library, provided that the separate
|
|
distribution of the work based on the Library and of the other library facilities
|
|
is otherwise permitted, and provided that you do these two things:
|
|
|
|
a) Accompany the combined library with a copy of the same work based on the
|
|
Library, uncombined with any other library facilities. This must be distributed
|
|
under the terms of the Sections above.
|
|
|
|
b) Give prominent notice with the combined library of the fact that part of
|
|
it is a work based on the Library, and explaining where to find the accompanying
|
|
uncombined form of the same work.
|
|
|
|
8. You may not copy, modify, sublicense, link with, or distribute the Library
|
|
except as expressly provided under this License. Any attempt otherwise to
|
|
copy, modify, sublicense, link with, or distribute the Library is void, and
|
|
will automatically terminate your rights under this License. However, parties
|
|
who have received copies, or rights, from you under this License will not
|
|
have their licenses terminated so long as such parties remain in full compliance.
|
|
|
|
9. You are not required to accept this License, since you have not signed
|
|
it. However, nothing else grants you permission to modify or distribute the
|
|
Library or its derivative works. These actions are prohibited by law if you
|
|
do not accept this License. Therefore, by modifying or distributing the Library
|
|
(or any work based on the Library), you indicate your acceptance of this License
|
|
to do so, and all its terms and conditions for copying, distributing or modifying
|
|
the Library or works based on it.
|
|
|
|
10. Each time you redistribute the Library (or any work based on the Library),
|
|
the recipient automatically receives a license from the original licensor
|
|
to copy, distribute, link with or modify the Library subject to these terms
|
|
and conditions. You may not impose any further restrictions on the recipients'
|
|
exercise of the rights granted herein. You are not responsible for enforcing
|
|
compliance by third parties with this License.
|
|
|
|
11. If, as a consequence of a court judgment or allegation of patent infringement
|
|
or for any other reason (not limited to patent issues), conditions are imposed
|
|
on you (whether by court order, agreement or otherwise) that contradict the
|
|
conditions of this License, they do not excuse you from the conditions of
|
|
this License. If you cannot distribute so as to satisfy simultaneously your
|
|
obligations under this License and any other pertinent obligations, then as
|
|
a consequence you may not distribute the Library at all. For example, if a
|
|
patent license would not permit royalty-free redistribution of the Library
|
|
by all those who receive copies directly or indirectly through you, then the
|
|
only way you could satisfy both it and this License would be to refrain entirely
|
|
from distribution of the Library.
|
|
|
|
If any portion of this section is held invalid or unenforceable under any
|
|
particular circumstance, the balance of the section is intended to apply,
|
|
and the section as a whole is intended to apply in other circumstances.
|
|
|
|
It is not the purpose of this section to induce you to infringe any patents
|
|
or other property right claims or to contest validity of any such claims;
|
|
this section has the sole purpose of protecting the integrity of the free
|
|
software distribution system which is implemented by public license practices.
|
|
Many people have made generous contributions to the wide range of software
|
|
distributed through that system in reliance on consistent application of that
|
|
system; it is up to the author/donor to decide if he or she is willing to
|
|
distribute software through any other system and a licensee cannot impose
|
|
that choice.
|
|
|
|
This section is intended to make thoroughly clear what is believed to be a
|
|
consequence of the rest of this License.
|
|
|
|
12. If the distribution and/or use of the Library is restricted in certain
|
|
countries either by patents or by copyrighted interfaces, the original copyright
|
|
holder who places the Library under this License may add an explicit geographical
|
|
distribution limitation excluding those countries, so that distribution is
|
|
permitted only in or among countries not thus excluded. In such case, this
|
|
License incorporates the limitation as if written in the body of this License.
|
|
|
|
13. The Free Software Foundation may publish revised and/or new versions of
|
|
the Lesser General Public License from time to time. Such new versions will
|
|
be similar in spirit to the present version, but may differ in detail to address
|
|
new problems or concerns.
|
|
|
|
Each version is given a distinguishing version number. If the Library specifies
|
|
a version number of this License which applies to it and "any later version",
|
|
you have the option of following the terms and conditions either of that version
|
|
or of any later version published by the Free Software Foundation. If the
|
|
Library does not specify a license version number, you may choose any version
|
|
ever published by the Free Software Foundation.
|
|
|
|
14. If you wish to incorporate parts of the Library into other free programs
|
|
whose distribution conditions are incompatible with these, write to the author
|
|
to ask for permission. For software which is copyrighted by the Free Software
|
|
Foundation, write to the Free Software Foundation; we sometimes make exceptions
|
|
for this. Our decision will be guided by the two goals of preserving the free
|
|
status of all derivatives of our free software and of promoting the sharing
|
|
and reuse of software generally.
|
|
|
|
NO WARRANTY
|
|
|
|
15. BECAUSE THE LIBRARY IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY FOR
|
|
THE LIBRARY, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE
|
|
STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE LIBRARY
|
|
"AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
|
|
BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
|
FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE
|
|
OF THE LIBRARY IS WITH YOU. SHOULD THE LIBRARY PROVE DEFECTIVE, YOU ASSUME
|
|
THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
|
|
|
|
16. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
|
|
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR REDISTRIBUTE
|
|
THE LIBRARY AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
|
|
GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE
|
|
OR INABILITY TO USE THE LIBRARY (INCLUDING BUT NOT LIMITED TO LOSS OF DATA
|
|
OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES
|
|
OR A FAILURE OF THE LIBRARY TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF SUCH
|
|
HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
|
|
END OF TERMS AND CONDITIONS
|
|
|
|
How to Apply These Terms to Your New Libraries
|
|
|
|
If you develop a new library, and you want it to be of the greatest possible
|
|
use to the public, we recommend making it free software that everyone can
|
|
redistribute and change. You can do so by permitting redistribution under
|
|
these terms (or, alternatively, under the terms of the ordinary General Public
|
|
License).
|
|
|
|
To apply these terms, attach the following notices to the library. It is safest
|
|
to attach them to the start of each source file to most effectively convey
|
|
the exclusion of warranty; and each file should have at least the "copyright"
|
|
line and a pointer to where the full notice is found.
|
|
|
|
<one line to give the library's name and an idea of what it does.>
|
|
|
|
Copyright (C) <year> <name of author>
|
|
|
|
This library is free software; you can redistribute it and/or modify it under
|
|
the terms of the GNU Lesser General Public License as published by the Free
|
|
Software Foundation; either version 2.1 of the License, or (at your option)
|
|
any later version.
|
|
|
|
This library is distributed in the hope that it will be useful, but WITHOUT
|
|
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
|
|
FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
|
|
details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public License along
|
|
with this library; if not, write to the Free Software Foundation, Inc., 51
|
|
Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
|
|
Also add information on how to contact you by electronic and paper mail.
|
|
|
|
You should also get your employer (if you work as a programmer) or your school,
|
|
if any, to sign a "copyright disclaimer" for the library, if necessary. Here
|
|
is a sample; alter the names:
|
|
|
|
Yoyodyne, Inc., hereby disclaims all copyright interest in
|
|
|
|
the library `Frob' (a library for tweaking knobs) written
|
|
|
|
by James Random Hacker.
|
|
|
|
< signature of Ty Coon > , 1 April 1990
|
|
|
|
Ty Coon, President of Vice
|
|
|
|
That's all there is to it!
|