Commit 76d7349a authored by Jonathan Riddell's avatar Jonathan Riddell 🛶

Updates for new licence policy

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GNU LIBRARY GENERAL PUBLIC LICENSE
Version 2, June 1991
Copyright (C) 1991 Free Software Foundation, Inc. GNU LESSER GENERAL PUBLIC LICENSE
51 Franklin Street, Fifth Floor Version 2.1, February 1999
Boston, MA 02110-1301, USA.
Copyright (C) 1991, 1999 Free Software Foundation, Inc.
51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Everyone is permitted to copy and distribute verbatim copies Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed. of this license document, but changing it is not allowed.
[This is the first released version of the library GPL. It is [This is the first released version of the Lesser GPL. It also counts
numbered 2 because it goes with version 2 of the ordinary GPL.] as the successor of the GNU Library Public License, version 2, hence
the version number 2.1.]
Preamble Preamble
The licenses for most software are designed to take away your The licenses for most software are designed to take away your
freedom to share and change it. By contrast, the GNU General Public freedom to share and change it. By contrast, the GNU General Public
Licenses are intended to guarantee your freedom to share and change Licenses are intended to guarantee your freedom to share and change
free software--to make sure the software is free for all its users. free software--to make sure the software is free for all its users.
This license, the Library General Public License, applies to some This license, the Lesser General Public License, applies to some
specially designated Free Software Foundation software, and to any specially designated software packages--typically libraries--of the
other libraries whose authors decide to use it. You can use it for Free Software Foundation and other authors who decide to use it. You
your libraries, too. can use it too, but we suggest you first think carefully about whether
this license or the ordinary General Public License is the better
When we speak of free software, we are referring to freedom, not strategy to use in any particular case, based on the explanations
price. Our General Public Licenses are designed to make sure that you below.
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 When we speak of free software, we are referring to freedom of use,
if you want it, that you can change the software or use pieces of it not price. Our General Public Licenses are designed to make sure that
in new free programs; and that you know you can do these things. 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 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. distributors to deny you these rights or to ask you to surrender these
These restrictions translate to certain responsibilities for you if rights. These restrictions translate to certain responsibilities for
you distribute copies of the library, or if you modify it. you if you distribute copies of the library or if you modify it.
For example, if you distribute copies of the library, whether gratis 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 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 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 code. If you link other code with the library, you must provide
complete object files to the recipients so that they can relink them complete object files to the recipients, so that they can relink them
with the library, after making changes to the library and recompiling with the library after making changes to the library and recompiling
it. And you must show them these terms so they know their rights. it. And you must show them these terms so they know their rights.
Our method of protecting your rights has two steps: (1) copyright We protect your rights with a two-step method: (1) we copyright the
the library, and (2) offer you this license which gives you legal library, and (2) we offer you this license, which gives you legal
permission to copy, distribute and/or modify the library. permission to copy, distribute and/or modify the library.
Also, for each distributor's protection, we want to make certain To protect each distributor, we want to make it very clear that
that everyone understands that there is no warranty for this free there is no warranty for the free library. Also, if the library is
library. If the library is modified by someone else and passed on, we modified by someone else and passed on, the recipients should know
want its recipients to know that what they have is not the original that what they have is not the original version, so that the original
version, so that any problems introduced by others will not reflect on author's reputation will not be affected by problems that might be
the original authors' reputations. introduced by others.
Finally, any free program is threatened constantly by software Finally, software patents pose a constant threat to the existence of
patents. We wish to avoid the danger that companies distributing free any free program. We wish to make sure that a company cannot
software will individually obtain patent licenses, thus in effect effectively restrict the users of a free program by obtaining a
transforming the program into proprietary software. To prevent this, restrictive license from a patent holder. Therefore, we insist that
we have made it clear that any patent must be licensed for everyone's any patent license obtained for a version of the library must be
free use or not licensed at all. consistent with the full freedom of use specified in this license.
Most GNU software, including some libraries, is covered by the ordinary Most GNU software, including some libraries, is covered by the
GNU General Public License, which was designed for utility programs. This ordinary GNU General Public License. This license, the GNU Lesser
license, the GNU Library General Public License, applies to certain General Public License, applies to certain designated libraries, and
designated libraries. This license is quite different from the ordinary is quite different from the ordinary General Public License. We use
one; be sure to read it in full, and don't assume that anything in it is this license for certain libraries in order to permit linking those
the same as in the ordinary license. libraries into non-free programs.
The reason we have a separate public license for some libraries is that When a program is linked with a library, whether statically or using
they blur the distinction we usually make between modifying or adding to a a shared library, the combination of the two is legally speaking a
program and simply using it. Linking a program with a library, without combined work, a derivative of the original library. The ordinary
changing the library, is in some sense simply using the library, and is General Public License therefore permits such linking only if the
analogous to running a utility program or application program. However, in entire combination fits its criteria of freedom. The Lesser General
a textual and legal sense, the linked executable is a combined work, a Public License permits more lax criteria for linking other code with
derivative of the original library, and the ordinary General Public License the library.
treats it as such.
We call this license the "Lesser" General Public License because it
Because of this blurred distinction, using the ordinary General does Less to protect the user's freedom than the ordinary General
Public License for libraries did not effectively promote software Public License. It also provides other free software developers Less
sharing, because most developers did not use the libraries. We of an advantage over competing non-free programs. These disadvantages
concluded that weaker conditions might promote sharing better. are the reason we use the ordinary General Public License for many
libraries. However, the Lesser license provides advantages in certain
However, unrestricted linking of non-free programs would deprive the special circumstances.
users of those programs of all benefit from the free status of the
libraries themselves. This Library General Public License is intended to For example, on rare occasions, there may be a special need to
permit developers of non-free programs to use free libraries, while encourage the widest possible use of a certain library, so that it
preserving your freedom as a user of such programs to change the free becomes a de-facto standard. To achieve this, non-free programs must
libraries that are incorporated in them. (We have not seen how to achieve be allowed to use the library. A more frequent case is that a free
this as regards changes in header files, but we have achieved it as regards library does the same job as widely used non-free libraries. In this
changes in the actual functions of the Library.) The hope is that this case, there is little to gain by limiting the free library to free
will lead to faster development of free libraries. 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 The precise terms and conditions for copying, distribution and
modification follow. Pay close attention to the difference between a modification follow. Pay close attention to the difference between a
"work based on the library" and a "work that uses the library". The "work based on the library" and a "work that uses the library". The
former contains code derived from the library, while the latter only former contains code derived from the library, whereas the latter must
works together with the library. be combined with the library in order to run.
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 GNU LESSER GENERAL PUBLIC LICENSE
TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
0. This License Agreement applies to any software library which 0. This License Agreement applies to any software library or other
contains a notice placed by the copyright holder or other authorized program which contains a notice placed by the copyright holder or
party saying it may be distributed under the terms of this Library other authorized party saying it may be distributed under the terms of
General Public License (also called "this License"). Each licensee is this Lesser General Public License (also called "this License").
addressed as "you". Each licensee is addressed as "you".
A "library" means a collection of software functions and/or data A "library" means a collection of software functions and/or data
prepared so as to be conveniently linked with application programs prepared so as to be conveniently linked with application programs
...@@ -124,8 +138,8 @@ included without limitation in the term "modification".) ...@@ -124,8 +138,8 @@ included without limitation in the term "modification".)
"Source code" for a work means the preferred form of the work for "Source code" for a work means the preferred form of the work for
making modifications to it. For a library, complete source code means making modifications to it. For a library, complete source code means
all the source code for all modules it contains, plus any associated all the source code for all modules it contains, plus any associated
interface definition files, plus the scripts used to control compilation interface definition files, plus the scripts used to control
and installation of the library. compilation and installation of the library.
Activities other than copying, distribution and modification are not Activities other than copying, distribution and modification are not
covered by this License; they are outside its scope. The act of covered by this License; they are outside its scope. The act of
...@@ -134,7 +148,7 @@ such a program is covered only if its contents constitute a work based ...@@ -134,7 +148,7 @@ 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 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 writing it). Whether that is true depends on what the Library does
and what the program that uses the Library does. and what the program that uses the Library does.
1. You may copy and distribute verbatim copies of the Library's 1. You may copy and distribute verbatim copies of the Library's
complete source code as you receive it, in any medium, provided that complete source code as you receive it, in any medium, provided that
you conspicuously and appropriately publish on each copy an you conspicuously and appropriately publish on each copy an
...@@ -256,7 +270,7 @@ distribute the object code for the work under the terms of Section 6. ...@@ -256,7 +270,7 @@ distribute the object code for the work under the terms of Section 6.
Any executables containing that work also fall under Section 6, Any executables containing that work also fall under Section 6,
whether or not they are linked directly with the Library itself. whether or not they are linked directly with the Library itself.
6. As an exception to the Sections above, you may also compile or 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 link a "work that uses the Library" with the Library to produce a
work containing portions of the Library, and distribute that work work containing portions of the Library, and distribute that work
under terms of your choice, provided that the terms permit under terms of your choice, provided that the terms permit
...@@ -283,23 +297,31 @@ of these things: ...@@ -283,23 +297,31 @@ of these things:
Library will not necessarily be able to recompile the application Library will not necessarily be able to recompile the application
to use the modified definitions.) to use the modified definitions.)
b) Accompany the work with a written offer, valid for at b) Use a suitable shared library mechanism for linking with the
least three years, to give the same user the materials Library. A suitable mechanism is one that (1) uses at run time a
specified in Subsection 6a, above, for a charge no more copy of the library already present on the user's computer system,
than the cost of performing this distribution. 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.
c) If distribution of the work is made by offering access to copy d) If distribution of the work is made by offering access to copy
from a designated place, offer equivalent access to copy the above from a designated place, offer equivalent access to copy the above
specified materials from the same place. specified materials from the same place.
d) Verify that the user has already received a copy of these e) Verify that the user has already received a copy of these
materials or that you have already sent this user a copy. materials or that you have already sent this user a copy.
For an executable, the required form of the "work that uses the For an executable, the required form of the "work that uses the
Library" must include any data and utility programs needed for Library" must include any data and utility programs needed for
reproducing the executable from it. However, as a special exception, reproducing the executable from it. However, as a special exception,
the source code distributed need not include anything that is normally the materials to be distributed need not include anything that is
distributed (in either source or binary form) with the major normally distributed (in either source or binary form) with the major
components (compiler, kernel, and so on) of the operating system on components (compiler, kernel, and so on) of the operating system on
which the executable runs, unless that component itself accompanies which the executable runs, unless that component itself accompanies
the executable. the executable.
...@@ -348,7 +370,7 @@ Library), the recipient automatically receives a license from the ...@@ -348,7 +370,7 @@ Library), the recipient automatically receives a license from the
original licensor to copy, distribute, link with or modify the Library original licensor to copy, distribute, link with or modify the Library
subject to these terms and conditions. You may not impose any further subject to these terms and conditions. You may not impose any further
restrictions on the recipients' exercise of the rights granted herein. restrictions on the recipients' exercise of the rights granted herein.
You are not responsible for enforcing compliance by third parties to You are not responsible for enforcing compliance by third parties with
this License. this License.
11. If, as a consequence of a court judgment or allegation of patent 11. If, as a consequence of a court judgment or allegation of patent
...@@ -364,9 +386,10 @@ all those who receive copies directly or indirectly through you, then ...@@ -364,9 +386,10 @@ 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 the only way you could satisfy both it and this License would be to
refrain entirely from distribution of the Library. refrain entirely from distribution of the Library.
If any portion of this section is held invalid or unenforceable under any If any portion of this section is held invalid or unenforceable under
particular circumstance, the balance of the section is intended to apply, any particular circumstance, the balance of the section is intended to
and the section as a whole is intended to apply in other circumstances. 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 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 patents or other property right claims or to contest validity of any
...@@ -384,14 +407,14 @@ be a consequence of the rest of this License. ...@@ -384,14 +407,14 @@ be a consequence of the rest of this License.
12. If the distribution and/or use of the Library is restricted in 12. If the distribution and/or use of the Library is restricted in
certain countries either by patents or by copyrighted interfaces, the certain countries either by patents or by copyrighted interfaces, the
original copyright holder who places the Library under this License may add original copyright holder who places the Library under this License
an explicit geographical distribution limitation excluding those countries, may add an explicit geographical distribution limitation excluding those
so that distribution is permitted only in or among countries not thus countries, so that distribution is permitted only in or among
excluded. In such case, this License incorporates the limitation as if countries not thus excluded. In such case, this License incorporates
written in the body of this License. the limitation as if written in the body of this License.
13. The Free Software Foundation may publish revised and/or new 13. The Free Software Foundation may publish revised and/or new
versions of the Library General Public License from time to time. versions of the Lesser General Public License from time to time.
Such new versions will be similar in spirit to the present version, Such new versions will be similar in spirit to the present version,
but may differ in detail to address new problems or concerns. but may differ in detail to address new problems or concerns.
...@@ -412,7 +435,7 @@ decision will be guided by the two goals of preserving the free status ...@@ -412,7 +435,7 @@ 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 of all derivatives of our free software and of promoting the sharing
and reuse of software generally. and reuse of software generally.
NO WARRANTY NO WARRANTY
15. BECAUSE THE LIBRARY IS LICENSED FREE OF CHARGE, THERE IS NO 15. BECAUSE THE LIBRARY IS LICENSED FREE OF CHARGE, THERE IS NO
WARRANTY FOR THE LIBRARY, TO THE EXTENT PERMITTED BY APPLICABLE LAW. WARRANTY FOR THE LIBRARY, TO THE EXTENT PERMITTED BY APPLICABLE LAW.
...@@ -435,19 +458,22 @@ FAILURE OF THE LIBRARY TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF ...@@ -435,19 +458,22 @@ 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 SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
DAMAGES. DAMAGES.
END OF TERMS AND CONDITIONS END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Libraries
How to Apply These Terms to Your New Libraries
If you develop a new library, and you want it to be of the greatest 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 possible use to the public, we recommend making it free software that
everyone can redistribute and change. You can do so by permitting everyone can redistribute and change. You can do so by permitting
redistribution under these terms (or, alternatively, under the terms of the redistribution under these terms (or, alternatively, under the terms
ordinary General Public License). 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.
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.> <one line to give the library's name and a brief idea of what it does.>
Copyright (C) <year> <name of author> Copyright (C) <year> <name of author>
...@@ -455,7 +481,7 @@ convey the exclusion of warranty; and each file should have at least the ...@@ -455,7 +481,7 @@ convey the exclusion of warranty; and each file should have at least the
This library is free software; you can redistribute it and/or This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version. 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, This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of but WITHOUT ANY WARRANTY; without even the implied warranty of
...@@ -464,18 +490,21 @@ convey the exclusion of warranty; and each file should have at least the ...@@ -464,18 +490,21 @@ convey the exclusion of warranty; and each file should have at least the
You should have received a copy of the GNU Lesser General Public You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Also add information on how to contact you by electronic and paper mail. 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 You should also get your employer (if you work as a programmer) or
school, if any, to sign a "copyright disclaimer" for the library, if your school, if any, to sign a "copyright disclaimer" for the library,
necessary. Here is a sample; alter the names: if necessary. Here is a sample; alter the names:
Yoyodyne, Inc., hereby disclaims all copyright interest in the Yoyodyne, Inc., hereby disclaims all copyright interest in the
library `Frob' (a library for tweaking knobs) written by James Random Hacker. library `Frob' (a library for tweaking knobs) written by James
Random Hacker.
<signature of Ty Coon>, 1 April 1990 <signature of Ty Coon>, 1 April 1990
Ty Coon, President of Vice Ty Coon, President of Vice
That's all there is to it! That's all there is to it!
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