eeff588280
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@16388 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
518 lines
25 KiB
Plaintext
518 lines
25 KiB
Plaintext
|
|
GNU LIBRARY GENERAL PUBLIC LICENSE
|
|
==================================
|
|
Version 2, June 1991
|
|
|
|
Copyright (C) 1991 Free Software Foundation, Inc.
|
|
675 Mass Ave, Cambridge, MA 02139, 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 library GPL. It is
|
|
numbered 2 because it goes with version 2 of the ordinary GPL.]
|
|
|
|
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 Library General Public License, applies to
|
|
some specially designated Free Software Foundation software, and
|
|
to any other libraries whose authors decide to use it. You can
|
|
use it for your libraries, too.
|
|
|
|
When we speak of free software, we are referring to freedom, 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 or use pieces of it in new free programs; and that
|
|
you know you can do these things.
|
|
|
|
To protect your rights, we need to make restrictions that forbid
|
|
anyone to deny you these rights or to ask you to surrender the
|
|
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 a program 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.
|
|
|
|
Our method of protecting your rights has two steps: (1)
|
|
copyright the library, and (2) offer you this license which
|
|
gives you legal permission to copy, distribute and/or modify the
|
|
library.
|
|
|
|
Also, for each distributor's protection, we want to make certain
|
|
that everyone understands that there is no warranty for this
|
|
free library. If the library is modified by someone else and
|
|
passed on, we want its recipients to know that what they have is
|
|
not the original version, so that any problems introduced by
|
|
others will not reflect on the original authors' reputations.
|
|
|
|
Finally, any free program is threatened constantly by software
|
|
patents. We wish to avoid the danger that companies
|
|
distributing free software will individually obtain patent
|
|
licenses, thus in effect transforming the program into
|
|
proprietary software. To prevent this, we have made it clear
|
|
that any patent must be licensed for everyone's free use or not
|
|
licensed at all.
|
|
|
|
Most GNU software, including some libraries, is covered by the
|
|
ordinary GNU General Public License, which was designed for
|
|
utility programs. This license, the GNU Library General Public
|
|
License, applies to certain designated libraries. This license
|
|
is quite different from the ordinary one; be sure to read it in
|
|
full, and don't assume that anything in it is the same as in the
|
|
ordinary license.
|
|
|
|
The reason we have a separate public license for some libraries
|
|
is that they blur the distinction we usually make between
|
|
modifying or adding to a program and simply using it. Linking a
|
|
program with a library, without changing the library, is in some
|
|
sense simply using the library, and is analogous to running a
|
|
utility program or application program. However, in a textual
|
|
and legal sense, the linked executable is a combined work, a
|
|
derivative of the original library, and the ordinary General
|
|
Public License treats it as such.
|
|
|
|
Because of this blurred distinction, using the ordinary General
|
|
Public License for libraries did not effectively promote
|
|
software sharing, because most developers did not use the
|
|
libraries. We concluded that weaker conditions might promote
|
|
sharing better.
|
|
|
|
However, unrestricted linking of non-free programs would deprive
|
|
the users of those programs of all benefit from the free status
|
|
of the libraries themselves. This Library General Public
|
|
License is intended to permit developers of non-free programs to
|
|
use free libraries, while preserving your freedom as a user of
|
|
such programs to change the free libraries that are incorporated
|
|
in them. (We have not seen how to achieve this as regards
|
|
changes in header files, but we have achieved it as regards
|
|
changes in the actual functions of the Library.) The hope is
|
|
that this will lead to faster development of free libraries.
|
|
|
|
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,
|
|
while the latter only works together with the library.
|
|
|
|
Note that it is possible for a library to be covered by the
|
|
ordinary General Public License rather than by this special one.
|
|
|
|
GNU LIBRARY GENERAL PUBLIC LICENSE
|
|
TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
|
|
|
|
0. This License Agreement applies to any software library which
|
|
contains a notice placed by the copyright holder or other
|
|
authorized party saying it may be distributed under the terms of
|
|
this Library 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 compile
|
|
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) 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.
|
|
|
|
c) 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.
|
|
|
|
d) 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 source code 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 to 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 Library 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
|
|
|
|
Appendix: 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 a brief 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 Library General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2 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
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with this library; if not, write to the Free
|
|
Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, 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!
|
|
|