Differential D27243 Diff 75244 LICENSES/LGPL-2.1-only.txt

Changeset View

Standalone View

LICENSES/LGPL-2.1-only.txt

This file was added.

		1		GNU LESSER GENERAL PUBLIC LICENSE
		2
		3		Version 2.1, February 1999
		4
		5		Copyright (C) 1991, 1999 Free Software Foundation, Inc.
		6
		7		51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
		8
		9		Everyone is permitted to copy and distribute verbatim copies of this license
		10		document, but changing it is not allowed.
		11
		12		[This is the first released version of the Lesser GPL. It also counts as the
		13		successor of the GNU Library Public License, version 2, hence the version
		14		number 2.1.]
		15
		16		Preamble
		17
		18		The licenses for most software are designed to take away your freedom to share
		19		and change it. By contrast, the GNU General Public Licenses are intended to
		20		guarantee your freedom to share and change free software--to make sure the
		21		software is free for all its users.
		22
		23		This license, the Lesser General Public License, applies to some specially
		24		designated software packages--typically libraries--of the Free Software Foundation
		25		and other authors who decide to use it. You can use it too, but we suggest
		26		you first think carefully about whether this license or the ordinary General
		27		Public License is the better strategy to use in any particular case, based
		28		on the explanations below.
		29
		30		When we speak of free software, we are referring to freedom of use, not price.
		31		Our General Public Licenses are designed to make sure that you have the freedom
		32		to distribute copies of free software (and charge for this service if you
		33		wish); that you receive source code or can get it if you want it; that you
		34		can change the software and use pieces of it in new free programs; and that
		35		you are informed that you can do these things.
		36
		37		To protect your rights, we need to make restrictions that forbid distributors
		38		to deny you these rights or to ask you to surrender these rights. These restrictions
		39		translate to certain responsibilities for you if you distribute copies of
		40		the library or if you modify it.
		41
		42		For example, if you distribute copies of the library, whether gratis or for
		43		a fee, you must give the recipients all the rights that we gave you. You must
		44		make sure that they, too, receive or can get the source code. If you link
		45		other code with the library, you must provide complete object files to the
		46		recipients, so that they can relink them with the library after making changes
		47		to the library and recompiling it. And you must show them these terms so they
		48		know their rights.
		49
		50		We protect your rights with a two-step method: (1) we copyright the library,
		51		and (2) we offer you this license, which gives you legal permission to copy,
		52		distribute and/or modify the library.
		53
		54		To protect each distributor, we want to make it very clear that there is no
		55		warranty for the free library. Also, if the library is modified by someone
		56		else and passed on, the recipients should know that what they have is not
		57		the original version, so that the original author's reputation will not be
		58		affected by problems that might be introduced by others.
		59
		60		Finally, software patents pose a constant threat to the existence of any free
		61		program. We wish to make sure that a company cannot effectively restrict the
		62		users of a free program by obtaining a restrictive license from a patent holder.
		63		Therefore, we insist that any patent license obtained for a version of the
		64		library must be consistent with the full freedom of use specified in this
		65		license.
		66
		67		Most GNU software, including some libraries, is covered by the ordinary GNU
		68		General Public License. This license, the GNU Lesser General Public License,
		69		applies to certain designated libraries, and is quite different from the ordinary
		70		General Public License. We use this license for certain libraries in order
		71		to permit linking those libraries into non-free programs.
		72
		73		When a program is linked with a library, whether statically or using a shared
		74		library, the combination of the two is legally speaking a combined work, a
		75		derivative of the original library. The ordinary General Public License therefore
		76		permits such linking only if the entire combination fits its criteria of freedom.
		77		The Lesser General Public License permits more lax criteria for linking other
		78		code with the library.
		79
		80		We call this license the "Lesser" General Public License because it does Less
		81		to protect the user's freedom than the ordinary General Public License. It
		82		also provides other free software developers Less of an advantage over competing
		83		non-free programs. These disadvantages are the reason we use the ordinary
		84		General Public License for many libraries. However, the Lesser license provides
		85		advantages in certain special circumstances.
		86
		87		For example, on rare occasions, there may be a special need to encourage the
		88		widest possible use of a certain library, so that it becomes a de-facto standard.
		89		To achieve this, non-free programs must be allowed to use the library. A more
		90		frequent case is that a free library does the same job as widely used non-free
		91		libraries. In this case, there is little to gain by limiting the free library
		92		to free software only, so we use the Lesser General Public License.
		93
		94		In other cases, permission to use a particular library in non-free programs
		95		enables a greater number of people to use a large body of free software. For
		96		example, permission to use the GNU C Library in non-free programs enables
		97		many more people to use the whole GNU operating system, as well as its variant,
		98		the GNU/Linux operating system.
		99
		100		Although the Lesser General Public License is Less protective of the users'
		101		freedom, it does ensure that the user of a program that is linked with the
		102		Library has the freedom and the wherewithal to run that program using a modified
		103		version of the Library.
		104
		105		The precise terms and conditions for copying, distribution and modification
		106		follow. Pay close attention to the difference between a "work based on the
		107		library" and a "work that uses the library". The former contains code derived
		108		from the library, whereas the latter must be combined with the library in
		109		order to run.
		110
		111		TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
		112
		113		0. This License Agreement applies to any software library or other program
		114		which contains a notice placed by the copyright holder or other authorized
		115		party saying it may be distributed under the terms of this Lesser General
		116		Public License (also called "this License"). Each licensee is addressed as
		117		"you".
		118
		119		A "library" means a collection of software functions and/or data prepared
		120		so as to be conveniently linked with application programs (which use some
		121		of those functions and data) to form executables.
		122
		123		The "Library", below, refers to any such software library or work which has
		124		been distributed under these terms. A "work based on the Library" means either
		125		the Library or any derivative work under copyright law: that is to say, a
		126		work containing the Library or a portion of it, either verbatim or with modifications
		127		and/or translated straightforwardly into another language. (Hereinafter, translation
		128		is included without limitation in the term "modification".)
		129
		130		"Source code" for a work means the preferred form of the work for making modifications
		131		to it. For a library, complete source code means all the source code for all
		132		modules it contains, plus any associated interface definition files, plus
		133		the scripts used to control compilation and installation of the library.
		134
		135		Activities other than copying, distribution and modification are not covered
		136		by this License; they are outside its scope. The act of running a program
		137		using the Library is not restricted, and output from such a program is covered
		138		only if its contents constitute a work based on the Library (independent of
		139		the use of the Library in a tool for writing it). Whether that is true depends
		140		on what the Library does and what the program that uses the Library does.
		141
		142		1. You may copy and distribute verbatim copies of the Library's complete source
		143		code as you receive it, in any medium, provided that you conspicuously and
		144		appropriately publish on each copy an appropriate copyright notice and disclaimer
		145		of warranty; keep intact all the notices that refer to this License and to
		146		the absence of any warranty; and distribute a copy of this License along with
		147		the Library.
		148
		149		You may charge a fee for the physical act of transferring a copy, and you
		150		may at your option offer warranty protection in exchange for a fee.
		151
		152		2. You may modify your copy or copies of the Library or any portion of it,
		153		thus forming a work based on the Library, and copy and distribute such modifications
		154		or work under the terms of Section 1 above, provided that you also meet all
		155		of these conditions:
		156
		157		a) The modified work must itself be a software library.
		158
		159		b) You must cause the files modified to carry prominent notices stating that
		160		you changed the files and the date of any change.
		161
		162		c) You must cause the whole of the work to be licensed at no charge to all
		163		third parties under the terms of this License.
		164
		165		d) If a facility in the modified Library refers to a function or a table of
		166		data to be supplied by an application program that uses the facility, other
		167		than as an argument passed when the facility is invoked, then you must make
		168		a good faith effort to ensure that, in the event an application does not supply
		169		such function or table, the facility still operates, and performs whatever
		170		part of its purpose remains meaningful.
		171
		172		(For example, a function in a library to compute square roots has a purpose
		173		that is entirely well-defined independent of the application. Therefore, Subsection
		174		2d requires that any application-supplied function or table used by this function
		175		must be optional: if the application does not supply it, the square root function
		176		must still compute square roots.)
		177
		178		These requirements apply to the modified work as a whole. If identifiable
		179		sections of that work are not derived from the Library, and can be reasonably
		180		considered independent and separate works in themselves, then this License,
		181		and its terms, do not apply to those sections when you distribute them as
		182		separate works. But when you distribute the same sections as part of a whole
		183		which is a work based on the Library, the distribution of the whole must be
		184		on the terms of this License, whose permissions for other licensees extend
		185		to the entire whole, and thus to each and every part regardless of who wrote
		186		it.
		187
		188		Thus, it is not the intent of this section to claim rights or contest your
		189		rights to work written entirely by you; rather, the intent is to exercise
		190		the right to control the distribution of derivative or collective works based
		191		on the Library.
		192
		193		In addition, mere aggregation of another work not based on the Library with
		194		the Library (or with a work based on the Library) on a volume of a storage
		195		or distribution medium does not bring the other work under the scope of this
		196		License.
		197
		198		3. You may opt to apply the terms of the ordinary GNU General Public License
		199		instead of this License to a given copy of the Library. To do this, you must
		200		alter all the notices that refer to this License, so that they refer to the
		201		ordinary GNU General Public License, version 2, instead of to this License.
		202		(If a newer version than version 2 of the ordinary GNU General Public License
		203		has appeared, then you can specify that version instead if you wish.) Do not
		204		make any other change in these notices.
		205
		206		Once this change is made in a given copy, it is irreversible for that copy,
		207		so the ordinary GNU General Public License applies to all subsequent copies
		208		and derivative works made from that copy.
		209
		210		This option is useful when you wish to copy part of the code of the Library
		211		into a program that is not a library.
		212
		213		4. You may copy and distribute the Library (or a portion or derivative of
		214		it, under Section 2) in object code or executable form under the terms of
		215		Sections 1 and 2 above provided that you accompany it with the complete corresponding
		216		machine-readable source code, which must be distributed under the terms of
		217		Sections 1 and 2 above on a medium customarily used for software interchange.
		218
		219		If distribution of object code is made by offering access to copy from a designated
		220		place, then offering equivalent access to copy the source code from the same
		221		place satisfies the requirement to distribute the source code, even though
		222		third parties are not compelled to copy the source along with the object code.
		223
		224		5. A program that contains no derivative of any portion of the Library, but
		225		is designed to work with the Library by being compiled or linked with it,
		226		is called a "work that uses the Library". Such a work, in isolation, is not
		227		a derivative work of the Library, and therefore falls outside the scope of
		228		this License.
		229
		230		However, linking a "work that uses the Library" with the Library creates an
		231		executable that is a derivative of the Library (because it contains portions
		232		of the Library), rather than a "work that uses the library". The executable
		233		is therefore covered by this License. Section 6 states terms for distribution
		234		of such executables.
		235
		236		When a "work that uses the Library" uses material from a header file that
		237		is part of the Library, the object code for the work may be a derivative work
		238		of the Library even though the source code is not. Whether this is true is
		239		especially significant if the work can be linked without the Library, or if
		240		the work is itself a library. The threshold for this to be true is not precisely
		241		defined by law.
		242
		243		If such an object file uses only numerical parameters, data structure layouts
		244		and accessors, and small macros and small inline functions (ten lines or less
		245		in length), then the use of the object file is unrestricted, regardless of
		246		whether it is legally a derivative work. (Executables containing this object
		247		code plus portions of the Library will still fall under Section 6.)
		248
		249		Otherwise, if the work is a derivative of the Library, you may distribute
		250		the object code for the work under the terms of Section 6. Any executables
		251		containing that work also fall under Section 6, whether or not they are linked
		252		directly with the Library itself.
		253
		254		6. As an exception to the Sections above, you may also combine or link a "work
		255		that uses the Library" with the Library to produce a work containing portions
		256		of the Library, and distribute that work under terms of your choice, provided
		257		that the terms permit modification of the work for the customer's own use
		258		and reverse engineering for debugging such modifications.
		259
		260		You must give prominent notice with each copy of the work that the Library
		261		is used in it and that the Library and its use are covered by this License.
		262		You must supply a copy of this License. If the work during execution displays
		263		copyright notices, you must include the copyright notice for the Library among
		264		them, as well as a reference directing the user to the copy of this License.
		265		Also, you must do one of these things:
		266
		267		a) Accompany the work with the complete corresponding machine-readable source
		268		code for the Library including whatever changes were used in the work (which
		269		must be distributed under Sections 1 and 2 above); and, if the work is an
		270		executable linked with the Library, with the complete machine-readable "work
		271		that uses the Library", as object code and/or source code, so that the user
		272		can modify the Library and then relink to produce a modified executable containing
		273		the modified Library. (It is understood that the user who changes the contents
		274		of definitions files in the Library will not necessarily be able to recompile
		275		the application to use the modified definitions.)
		276
		277		b) Use a suitable shared library mechanism for linking with the Library. A
		278		suitable mechanism is one that (1) uses at run time a copy of the library
		279		already present on the user's computer system, rather than copying library
		280		functions into the executable, and (2) will operate properly with a modified
		281		version of the library, if the user installs one, as long as the modified
		282		version is interface-compatible with the version that the work was made with.
		283
		284		c) Accompany the work with a written offer, valid for at least three years,
		285		to give the same user the materials specified in Subsection 6a, above, for
		286		a charge no more than the cost of performing this distribution.
		287
		288		d) If distribution of the work is made by offering access to copy from a designated
		289		place, offer equivalent access to copy the above specified materials from
		290		the same place.
		291
		292		e) Verify that the user has already received a copy of these materials or
		293		that you have already sent this user a copy.
		294
		295		For an executable, the required form of the "work that uses the Library" must
		296		include any data and utility programs needed for reproducing the executable
		297		from it. However, as a special exception, the materials to be distributed
		298		need not include anything that is normally distributed (in either source or
		299		binary form) with the major components (compiler, kernel, and so on) of the
		300		operating system on which the executable runs, unless that component itself
		301		accompanies the executable.
		302
		303		It may happen that this requirement contradicts the license restrictions of
		304		other proprietary libraries that do not normally accompany the operating system.
		305		Such a contradiction means you cannot use both them and the Library together
		306		in an executable that you distribute.
		307
		308		7. You may place library facilities that are a work based on the Library side-by-side
		309		in a single library together with other library facilities not covered by
		310		this License, and distribute such a combined library, provided that the separate
		311		distribution of the work based on the Library and of the other library facilities
		312		is otherwise permitted, and provided that you do these two things:
		313
		314		a) Accompany the combined library with a copy of the same work based on the
		315		Library, uncombined with any other library facilities. This must be distributed
		316		under the terms of the Sections above.
		317
		318		b) Give prominent notice with the combined library of the fact that part of
		319		it is a work based on the Library, and explaining where to find the accompanying
		320		uncombined form of the same work.
		321
		322		8. You may not copy, modify, sublicense, link with, or distribute the Library
		323		except as expressly provided under this License. Any attempt otherwise to
		324		copy, modify, sublicense, link with, or distribute the Library is void, and
		325		will automatically terminate your rights under this License. However, parties
		326		who have received copies, or rights, from you under this License will not
		327		have their licenses terminated so long as such parties remain in full compliance.
		328
		329		9. You are not required to accept this License, since you have not signed
		330		it. However, nothing else grants you permission to modify or distribute the
		331		Library or its derivative works. These actions are prohibited by law if you
		332		do not accept this License. Therefore, by modifying or distributing the Library
		333		(or any work based on the Library), you indicate your acceptance of this License
		334		to do so, and all its terms and conditions for copying, distributing or modifying
		335		the Library or works based on it.
		336
		337		10. Each time you redistribute the Library (or any work based on the Library),
		338		the recipient automatically receives a license from the original licensor
		339		to copy, distribute, link with or modify the Library subject to these terms
		340		and conditions. You may not impose any further restrictions on the recipients'
		341		exercise of the rights granted herein. You are not responsible for enforcing
		342		compliance by third parties with this License.
		343
		344		11. If, as a consequence of a court judgment or allegation of patent infringement
		345		or for any other reason (not limited to patent issues), conditions are imposed
		346		on you (whether by court order, agreement or otherwise) that contradict the
		347		conditions of this License, they do not excuse you from the conditions of
		348		this License. If you cannot distribute so as to satisfy simultaneously your
		349		obligations under this License and any other pertinent obligations, then as
		350		a consequence you may not distribute the Library at all. For example, if a
		351		patent license would not permit royalty-free redistribution of the Library
		352		by all those who receive copies directly or indirectly through you, then the
		353		only way you could satisfy both it and this License would be to refrain entirely
		354		from distribution of the Library.
		355
		356		If any portion of this section is held invalid or unenforceable under any
		357		particular circumstance, the balance of the section is intended to apply,
		358		and the section as a whole is intended to apply in other circumstances.
		359
		360		It is not the purpose of this section to induce you to infringe any patents
		361		or other property right claims or to contest validity of any such claims;
		362		this section has the sole purpose of protecting the integrity of the free
		363		software distribution system which is implemented by public license practices.
		364		Many people have made generous contributions to the wide range of software
		365		distributed through that system in reliance on consistent application of that
		366		system; it is up to the author/donor to decide if he or she is willing to
		367		distribute software through any other system and a licensee cannot impose
		368		that choice.
		369
		370		This section is intended to make thoroughly clear what is believed to be a
		371		consequence of the rest of this License.
		372
		373		12. If the distribution and/or use of the Library is restricted in certain
		374		countries either by patents or by copyrighted interfaces, the original copyright
		375		holder who places the Library under this License may add an explicit geographical
		376		distribution limitation excluding those countries, so that distribution is
		377		permitted only in or among countries not thus excluded. In such case, this
		378		License incorporates the limitation as if written in the body of this License.
		379
		380		13. The Free Software Foundation may publish revised and/or new versions of
		381		the Lesser General Public License from time to time. Such new versions will
		382		be similar in spirit to the present version, but may differ in detail to address
		383		new problems or concerns.
		384
		385		Each version is given a distinguishing version number. If the Library specifies
		386		a version number of this License which applies to it and "any later version",
		387		you have the option of following the terms and conditions either of that version
		388		or of any later version published by the Free Software Foundation. If the
		389		Library does not specify a license version number, you may choose any version
		390		ever published by the Free Software Foundation.
		391
		392		14. If you wish to incorporate parts of the Library into other free programs
		393		whose distribution conditions are incompatible with these, write to the author
		394		to ask for permission. For software which is copyrighted by the Free Software
		395		Foundation, write to the Free Software Foundation; we sometimes make exceptions
		396		for this. Our decision will be guided by the two goals of preserving the free
		397		status of all derivatives of our free software and of promoting the sharing
		398		and reuse of software generally.
		399
		400		NO WARRANTY
		401
		402		15. BECAUSE THE LIBRARY IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY FOR
		403		THE LIBRARY, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE
		404		STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE LIBRARY
		405		"AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
		406		BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
		407		FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE
		408		OF THE LIBRARY IS WITH YOU. SHOULD THE LIBRARY PROVE DEFECTIVE, YOU ASSUME
		409		THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
		410
		411		16. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
		412		WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR REDISTRIBUTE
		413		THE LIBRARY AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
		414		GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE
		415		OR INABILITY TO USE THE LIBRARY (INCLUDING BUT NOT LIMITED TO LOSS OF DATA
		416		OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES
		417		OR A FAILURE OF THE LIBRARY TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF SUCH
		418		HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
		419		END OF TERMS AND CONDITIONS
		420
		421		How to Apply These Terms to Your New Libraries
		422
		423		If you develop a new library, and you want it to be of the greatest possible
		424		use to the public, we recommend making it free software that everyone can
		425		redistribute and change. You can do so by permitting redistribution under
		426		these terms (or, alternatively, under the terms of the ordinary General Public
		427		License).
		428
		429		To apply these terms, attach the following notices to the library. It is safest
		430		to attach them to the start of each source file to most effectively convey
		431		the exclusion of warranty; and each file should have at least the "copyright"
		432		line and a pointer to where the full notice is found.
		433
		434		< one line to give the library's name and an idea of what it does. >
		435
		436		Copyright (C) < year > < name of author >
		437
		438		This library is free software; you can redistribute it and/or modify it under
		439		the terms of the GNU Lesser General Public License as published by the Free
		440		Software Foundation; either version 2.1 of the License, or (at your option)
		441		any later version.
		442
		443		This library is distributed in the hope that it will be useful, but WITHOUT
		444		ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
		445		FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
		446		details.
		447
		448		You should have received a copy of the GNU Lesser General Public License along
		449		with this library; if not, write to the Free Software Foundation, Inc., 51
		450		Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA Also add information
		451		on how to contact you by electronic and paper mail.
		452
		453		You should also get your employer (if you work as a programmer) or your school,
		454		if any, to sign a "copyright disclaimer" for the library, if necessary. Here
		455		is a sample; alter the names:
		456
		457		Yoyodyne, Inc., hereby disclaims all copyright interest in
		458
		459		the library `Frob' (a library for tweaking knobs) written
		460
		461		by James Random Hacker.
		462
		463		< signature of Ty Coon > , 1 April 1990
		464
		465		Ty Coon, President of Vice
		466
		467		That's all there is to it!