6781N/A GNU LIBRARY GENERAL PUBLIC LICENSE
6781N/A Copyright (C) 1991 Free Software Foundation, Inc.
6781N/A 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
6781N/A Everyone is permitted to copy and distribute verbatim copies
6781N/A of this license document, but changing it is not allowed.
6781N/A[This is the first released version of the library GPL. It is
6781N/A numbered 2 because it goes with version 2 of the ordinary GPL.]
6781N/A The licenses for most software are designed to take away your
6781N/Afreedom to share and change it. By contrast, the GNU General Public
6781N/ALicenses are intended to guarantee your freedom to share and change
6781N/Afree software--to make sure the software is free for all its users.
6781N/A This license, the Library General Public License, applies to some
6781N/Aspecially designated Free Software Foundation software, and to any
6781N/Aother libraries whose authors decide to use it. You can use it for
6781N/A When we speak of free software, we are referring to freedom, not
6781N/Aprice. Our General Public Licenses are designed to make sure that you
6781N/Ahave the freedom to distribute copies of free software (and charge for
6781N/Athis service if you wish), that you receive source code or can get it
6781N/Aif you want it, that you can change the software or use pieces of it
6781N/Ain new free programs; and that you know you can do these things.
6781N/A To protect your rights, we need to make restrictions that forbid
6781N/Aanyone to deny you these rights or to ask you to surrender the rights.
6781N/AThese restrictions translate to certain responsibilities for you if
6781N/Ayou distribute copies of the library, or if you modify it.
6781N/A For example, if you distribute copies of the library, whether gratis
6781N/Aor for a fee, you must give the recipients all the rights that we gave
6781N/Ayou. You must make sure that they, too, receive or can get the source
6781N/Acode. If you link a program with the library, you must provide
6781N/Acomplete object files to the recipients so that they can relink them
6781N/Awith the library, after making changes to the library and recompiling
6781N/Ait. And you must show them these terms so they know their rights.
6781N/A Our method of protecting your rights has two steps: (1) copyright
6781N/Athe library, and (2) offer you this license which gives you legal
6781N/A Also, for each distributor's protection, we want to make certain
6781N/Athat everyone understands that there is no warranty for this free
6781N/Alibrary. If the library is modified by someone else and passed on, we
6781N/Awant its recipients to know that what they have is not the original
6781N/Aversion, so that any problems introduced by others will not reflect on
6781N/Athe original authors' reputations.
6781N/A Finally, any free program is threatened constantly by software
6781N/Apatents. We wish to avoid the danger that companies distributing free
6781N/Asoftware will individually obtain patent licenses, thus in effect
6781N/Atransforming the program into proprietary software. To prevent this,
6781N/Awe have made it clear that any patent must be licensed for everyone's
6781N/Afree use or not licensed at all.
6781N/A Most GNU software, including some libraries, is covered by the ordinary
6781N/AGNU General Public License, which was designed for utility programs. This
6781N/Alicense, the GNU Library General Public License, applies to certain
6781N/Adesignated libraries. This license is quite different from the ordinary
6781N/Aone; be sure to read it in full, and don't assume that anything in it is
6781N/Athe same as in the ordinary license.
6781N/A The reason we have a separate public license for some libraries is that
6781N/Athey blur the distinction we usually make between modifying or adding to a
6781N/Aprogram and simply using it. Linking a program with a library, without
6781N/Achanging the library, is in some sense simply using the library, and is
6781N/Aanalogous to running a utility program or application program. However, in
6781N/Aa textual and legal sense, the linked executable is a combined work, a
6781N/Aderivative of the original library, and the ordinary General Public License
6781N/A Because of this blurred distinction, using the ordinary General
6781N/APublic License for libraries did not effectively promote software
6781N/Asharing, because most developers did not use the libraries. We
6781N/Aconcluded that weaker conditions might promote sharing better.
6781N/A However, unrestricted linking of non-free programs would deprive the
6781N/Ausers of those programs of all benefit from the free status of the
6781N/Alibraries themselves. This Library General Public License is intended to
6781N/Apermit developers of non-free programs to use free libraries, while
6781N/Apreserving your freedom as a user of such programs to change the free
6781N/Alibraries that are incorporated in them. (We have not seen how to achieve
6781N/Athis as regards changes in header files, but we have achieved it as regards
6781N/Achanges in the actual functions of the Library.) The hope is that this
6781N/Awill lead to faster development of free libraries.
6781N/A The precise terms and conditions for copying, distribution and
6781N/Amodification follow. Pay close attention to the difference between a
6781N/A"work based on the library" and a "work that uses the library". The
6781N/Aformer contains code derived from the library, while the latter only
6781N/Aworks together with the library.
6781N/A Note that it is possible for a library to be covered by the ordinary
6781N/AGeneral Public License rather than by this special one.
6781N/A GNU LIBRARY GENERAL PUBLIC LICENSE
6781N/A TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
6781N/A 0. This License Agreement applies to any software library which
6781N/Acontains a notice placed by the copyright holder or other authorized
6781N/Aparty saying it may be distributed under the terms of this Library
6781N/AGeneral Public License (also called "this License"). Each licensee is
6781N/A A "library" means a collection of software functions
and/or data
6781N/Aprepared so as to be conveniently linked with application programs
6781N/A(which use some of those functions and data) to form executables.
6781N/A The "Library", below, refers to any such software library or work
6781N/Awhich has been distributed under these terms. A "work based on the
6781N/ALibrary" means either the Library or any derivative work under
6781N/Acopyright law: that is to say, a work containing the Library or a
6781N/Aportion of it, either verbatim or with modifications
and/or translated
6781N/Astraightforwardly into another language. (Hereinafter, translation is
6781N/Aincluded without limitation in the term "modification".)
6781N/A "Source code" for a work means the preferred form of the work for
6781N/Amaking modifications to it. For a library, complete source code means
6781N/Aall the source code for all modules it contains, plus any associated
6781N/Ainterface definition files, plus the scripts used to control compilation
6781N/Aand installation of the library.
6781N/A Activities other than copying, distribution and modification are not
6781N/Acovered by this License; they are outside its scope. The act of
6781N/Arunning a program using the Library is not restricted, and output from
6781N/Asuch a program is covered only if its contents constitute a work based
6781N/Aon the Library (independent of the use of the Library in a tool for
6781N/Awriting it). Whether that is true depends on what the Library does
6781N/Aand what the program that uses the Library does.
6781N/A 1. You may copy and distribute verbatim copies of the Library's
6781N/Acomplete source code as you receive it, in any medium, provided that
6781N/Ayou conspicuously and appropriately publish on each copy an
6781N/Aappropriate copyright notice and disclaimer of warranty; keep intact
6781N/Aall the notices that refer to this License and to the absence of any
6781N/Awarranty; and distribute a copy of this License along with the
6781N/A You may charge a fee for the physical act of transferring a copy,
6781N/Aand you may at your option offer warranty protection in exchange for a
6781N/A 2. You may modify your copy or copies of the Library or any portion
6781N/Aof it, thus forming a work based on the Library, and copy and
6781N/Adistribute such modifications or work under the terms of Section 1
6781N/Aabove, provided that you also meet all of these conditions:
6781N/A a) The modified work must itself be a software library.
6781N/A b) You must cause the files modified to carry prominent notices
6781N/A stating that you changed the files and the date of any change.
6781N/A c) You must cause the whole of the work to be licensed at no
6781N/A charge to all third parties under the terms of this License.
6781N/A d) If a facility in the modified Library refers to a function or a
6781N/A table of data to be supplied by an application program that uses
6781N/A the facility, other than as an argument passed when the facility
6781N/A is invoked, then you must make a good faith effort to ensure that,
6781N/A in the event an application does not supply such function or
6781N/A table, the facility still operates, and performs whatever part of
6781N/A its purpose remains meaningful.
6781N/A (For example, a function in a library to compute square roots has
6781N/A a purpose that is entirely well-defined independent of the
6781N/A application. Therefore, Subsection 2d requires that any
6781N/A application-supplied function or table used by this function must
6781N/A be optional: if the application does not supply it, the square
6781N/A root function must still compute square roots.)
6781N/AThese requirements apply to the modified work as a whole. If
6781N/Aidentifiable sections of that work are not derived from the Library,
6781N/Aand can be reasonably considered independent and separate works in
6781N/Athemselves, then this License, and its terms, do not apply to those
6781N/Asections when you distribute them as separate works. But when you
6781N/Adistribute the same sections as part of a whole which is a work based
6781N/Aon the Library, the distribution of the whole must be on the terms of
6781N/Athis License, whose permissions for other licensees extend to the
6781N/Aentire whole, and thus to each and every part regardless of who wrote
6781N/AThus, it is not the intent of this section to claim rights or contest
6781N/Ayour rights to work written entirely by you; rather, the intent is to
6781N/Aexercise the right to control the distribution of derivative or
6781N/Acollective works based on the Library.
6781N/AIn addition, mere aggregation of another work not based on the Library
6781N/Awith the Library (or with a work based on the Library) on a volume of
6781N/Aa storage or distribution medium does not bring the other work under
6781N/A 3. You may opt to apply the terms of the ordinary GNU General Public
6781N/ALicense instead of this License to a given copy of the Library. To do
6781N/Athis, you must alter all the notices that refer to this License, so
6781N/Athat they refer to the ordinary GNU General Public License, version 2,
6781N/Ainstead of to this License. (If a newer version than version 2 of the
6781N/Aordinary GNU General Public License has appeared, then you can specify
6781N/Athat version instead if you wish.) Do not make any other change in
6781N/A Once this change is made in a given copy, it is irreversible for
6781N/Athat copy, so the ordinary GNU General Public License applies to all
6781N/Asubsequent copies and derivative works made from that copy.
6781N/A This option is useful when you wish to copy part of the code of
6781N/Athe Library into a program that is not a library.
6781N/A 4. You may copy and distribute the Library (or a portion or
6781N/Aderivative of it, under Section 2) in object code or executable form
6781N/Aunder the terms of Sections 1 and 2 above provided that you accompany
6781N/Ait with the complete corresponding machine-readable source code, which
6781N/Amust be distributed under the terms of Sections 1 and 2 above on a
6781N/Amedium customarily used for software interchange.
6781N/A If distribution of object code is made by offering access to copy
6781N/Afrom a designated place, then offering equivalent access to copy the
6781N/Asource code from the same place satisfies the requirement to
6781N/Adistribute the source code, even though third parties are not
6781N/Acompelled to copy the source along with the object code.
6781N/A 5. A program that contains no derivative of any portion of the
6781N/ALibrary, but is designed to work with the Library by being compiled or
6781N/Alinked with it, is called a "work that uses the Library". Such a
6781N/Awork, in isolation, is not a derivative work of the Library, and
6781N/Atherefore falls outside the scope of this License.
6781N/A However, linking a "work that uses the Library" with the Library
6781N/Acreates an executable that is a derivative of the Library (because it
6781N/Acontains portions of the Library), rather than a "work that uses the
6781N/Alibrary". The executable is therefore covered by this License.
6781N/ASection 6 states terms for distribution of such executables.
6781N/A When a "work that uses the Library" uses material from a header file
6781N/Athat is part of the Library, the object code for the work may be a
6781N/Aderivative work of the Library even though the source code is not.
6781N/AWhether this is true is especially significant if the work can be
6781N/Alinked without the Library, or if the work is itself a library. The
6781N/Athreshold for this to be true is not precisely defined by law.
6781N/A If such an object file uses only numerical parameters, data
6781N/Astructure layouts and accessors, and small macros and small inline
6781N/Afunctions (ten lines or less in length), then the use of the object
6781N/Afile is unrestricted, regardless of whether it is legally a derivative
6781N/Awork. (Executables containing this object code plus portions of the
6781N/ALibrary will still fall under Section 6.)
6781N/A Otherwise, if the work is a derivative of the Library, you may
6781N/Adistribute the object code for the work under the terms of Section 6.
6781N/AAny executables containing that work also fall under Section 6,
6781N/Awhether or not they are linked directly with the Library itself.
6781N/A 6. As an exception to the Sections above, you may also compile or
6781N/Alink a "work that uses the Library" with the Library to produce a
6781N/Awork containing portions of the Library, and distribute that work
6781N/Aunder terms of your choice, provided that the terms permit
6781N/Amodification of the work for the customer's own use and reverse
6781N/Aengineering for debugging such modifications.
6781N/A You must give prominent notice with each copy of the work that the
6781N/ALibrary is used in it and that the Library and its use are covered by
6781N/Athis License. You must supply a copy of this License. If the work
6781N/Aduring execution displays copyright notices, you must include the
6781N/Acopyright notice for the Library among them, as well as a reference
6781N/Adirecting the user to the copy of this License. Also, you must do one
6781N/A a) Accompany the work with the complete corresponding
6781N/A machine-readable source code for the Library including whatever
6781N/A changes were used in the work (which must be distributed under
6781N/A Sections 1 and 2 above); and, if the work is an executable linked
6781N/A with the Library, with the complete machine-readable "work that
6781N/A uses the Library", as object code
and/or source code, so that the
6781N/A user can modify the Library and then relink to produce a modified
6781N/A executable containing the modified Library. (It is understood
6781N/A that the user who changes the contents of definitions files in the
6781N/A Library will not necessarily be able to recompile the application
6781N/A to use the modified definitions.)
6781N/A b) Accompany the work with a written offer, valid for at
6781N/A least three years, to give the same user the materials
6781N/A specified in Subsection 6a, above, for a charge no more
6781N/A than the cost of performing this distribution.
6781N/A c) If distribution of the work is made by offering access to copy
6781N/A from a designated place, offer equivalent access to copy the above
6781N/A specified materials from the same place.
6781N/A d) Verify that the user has already received a copy of these
6781N/A materials or that you have already sent this user a copy.
6781N/A For an executable, the required form of the "work that uses the
6781N/ALibrary" must include any data and utility programs needed for
6781N/Areproducing the executable from it. However, as a special exception,
6781N/Athe source code distributed need not include anything that is normally
6781N/Adistributed (in either source or binary form) with the major
6781N/Acomponents (compiler, kernel, and so on) of the operating system on
6781N/Awhich the executable runs, unless that component itself accompanies
6781N/A It may happen that this requirement contradicts the license
6781N/Arestrictions of other proprietary libraries that do not normally
6781N/Aaccompany the operating system. Such a contradiction means you cannot
6781N/Ause both them and the Library together in an executable that you
6781N/A 7. You may place library facilities that are a work based on the
6781N/ALibrary side-by-side in a single library together with other library
6781N/Afacilities not covered by this License, and distribute such a combined
6781N/Alibrary, provided that the separate distribution of the work based on
6781N/Athe Library and of the other library facilities is otherwise
6781N/Apermitted, and provided that you do these two things:
6781N/A a) Accompany the combined library with a copy of the same work
6781N/A based on the Library, uncombined with any other library
6781N/A facilities. This must be distributed under the terms of the
6781N/A b) Give prominent notice with the combined library of the fact
6781N/A that part of it is a work based on the Library, and explaining
6781N/A where to find the accompanying uncombined form of the same work.
6781N/A 8. You may not copy, modify, sublicense, link with, or distribute
6781N/Athe Library except as expressly provided under this License. Any
6781N/Aattempt otherwise to copy, modify, sublicense, link with, or
6781N/Adistribute the Library is void, and will automatically terminate your
6781N/Arights under this License. However, parties who have received copies,
6781N/Aor rights, from you under this License will not have their licenses
6781N/Aterminated so long as such parties remain in full compliance.
6781N/A 9. You are not required to accept this License, since you have not
6781N/Asigned it. However, nothing else grants you permission to modify or
6781N/Adistribute the Library or its derivative works. These actions are
6781N/Aprohibited by law if you do not accept this License. Therefore, by
6781N/Amodifying or distributing the Library (or any work based on the
6781N/ALibrary), you indicate your acceptance of this License to do so, and
6781N/Aall its terms and conditions for copying, distributing or modifying
6781N/Athe Library or works based on it.
6781N/A 10. Each time you redistribute the Library (or any work based on the
6781N/ALibrary), the recipient automatically receives a license from the
6781N/Aoriginal licensor to copy, distribute, link with or modify the Library
6781N/Asubject to these terms and conditions. You may not impose any further
6781N/Arestrictions on the recipients' exercise of the rights granted herein.
6781N/AYou are not responsible for enforcing compliance by third parties to
6781N/A 11. If, as a consequence of a court judgment or allegation of patent
6781N/Ainfringement or for any other reason (not limited to patent issues),
6781N/Aconditions are imposed on you (whether by court order, agreement or
6781N/Aotherwise) that contradict the conditions of this License, they do not
6781N/Aexcuse you from the conditions of this License. If you cannot
6781N/Adistribute so as to satisfy simultaneously your obligations under this
6781N/ALicense and any other pertinent obligations, then as a consequence you
6781N/Amay not distribute the Library at all. For example, if a patent
6781N/Alicense would not permit royalty-free redistribution of the Library by
6781N/Aall those who receive copies directly or indirectly through you, then
6781N/Athe only way you could satisfy both it and this License would be to
6781N/Arefrain entirely from distribution of the Library.
6781N/AIf any portion of this section is held invalid or unenforceable under any
6781N/Aparticular circumstance, the balance of the section is intended to apply,
6781N/Aand the section as a whole is intended to apply in other circumstances.
6781N/AIt is not the purpose of this section to induce you to infringe any
6781N/Apatents or other property right claims or to contest validity of any
6781N/Asuch claims; this section has the sole purpose of protecting the
6781N/Aintegrity of the free software distribution system which is
6781N/Aimplemented by public license practices. Many people have made
6781N/Agenerous contributions to the wide range of software distributed
6781N/Athrough that system in reliance on consistent application of that
6781N/Ato distribute software through any other system and a licensee cannot
6781N/AThis section is intended to make thoroughly clear what is believed to
6781N/Abe a consequence of the rest of this License.
6781N/A 12. If the distribution
and/or use of the Library is restricted in
6781N/Acertain countries either by patents or by copyrighted interfaces, the
6781N/Aoriginal copyright holder who places the Library under this License may add
6781N/Aan explicit geographical distribution limitation excluding those countries,
6781N/Aso that distribution is permitted only in or among countries not thus
6781N/Aexcluded. In such case, this License incorporates the limitation as if
6781N/Awritten in the body of this License.
6781N/A 13. The Free Software Foundation may publish revised
and/or new
6781N/Aversions of the Library General Public License from time to time.
6781N/ASuch new versions will be similar in spirit to the present version,
6781N/Abut may differ in detail to address new problems or concerns.
6781N/AEach version is given a distinguishing version number. If the Library
6781N/Aspecifies a version number of this License which applies to it and
6781N/A"any later version", you have the option of following the terms and
6781N/Aconditions either of that version or of any later version published by
6781N/Athe Free Software Foundation. If the Library does not specify a
6781N/Alicense version number, you may choose any version ever published by
6781N/Athe Free Software Foundation.
6781N/A 14. If you wish to incorporate parts of the Library into other free
6781N/Aprograms whose distribution conditions are incompatible with these,
6781N/Awrite to the author to ask for permission. For software which is
6781N/Acopyrighted by the Free Software Foundation, write to the Free
6781N/ASoftware Foundation; we sometimes make exceptions for this. Our
6781N/Adecision will be guided by the two goals of preserving the free status
6781N/Aof all derivatives of our free software and of promoting the sharing
6781N/Aand reuse of software generally.
6781N/A 15. BECAUSE THE LIBRARY IS LICENSED FREE OF CHARGE, THERE IS NO
6781N/AWARRANTY FOR THE LIBRARY, TO THE EXTENT PERMITTED BY APPLICABLE LAW.
6781N/AEXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS
AND/OR 6781N/AOTHER PARTIES PROVIDE THE LIBRARY "AS IS" WITHOUT WARRANTY OF ANY
6781N/AKIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE
6781N/AIMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
6781N/APURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE
6781N/ALIBRARY IS WITH YOU. SHOULD THE LIBRARY PROVE DEFECTIVE, YOU ASSUME
6781N/ATHE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
6781N/A 16. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN
6781N/AWRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY
6781N/AAND/OR REDISTRIBUTE THE LIBRARY AS PERMITTED ABOVE, BE LIABLE TO YOU
6781N/AFOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR
6781N/ACONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE
6781N/ALIBRARY (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING
6781N/ARENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A
6781N/AFAILURE OF THE LIBRARY TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF
6781N/ASUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
6781N/A END OF TERMS AND CONDITIONS
6781N/A How to Apply These Terms to Your New Libraries
6781N/A If you develop a new library, and you want it to be of the greatest
6781N/Apossible use to the public, we recommend making it free software that
6781N/Aeveryone can redistribute and change. You can do so by permitting
6781N/Aredistribution under these terms (or, alternatively, under the terms of the
6781N/Aordinary General Public License).
6781N/A To apply these terms, attach the following notices to the library. It is
6781N/Asafest to attach them to the start of each source file to most effectively
6781N/Aconvey the exclusion of warranty; and each file should have at least the
6781N/A"copyright" line and a pointer to where the full notice is found.
6781N/A <one line to give the library's name and a brief idea of what it does.>
6781N/A Copyright (C) <year> <name of author>
6781N/A This library is free software; you can redistribute it
and/or 6781N/A modify it under the terms of the GNU Library General Public
6781N/A License as published by the Free Software Foundation; either
6781N/A version 2 of the License, or (at your option) any later version.
6781N/A This library is distributed in the hope that it will be useful,
6781N/A but WITHOUT ANY WARRANTY; without even the implied warranty of
6781N/A MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
6781N/A Library General Public License for more details.
6781N/A You should have received a copy of the GNU Library General Public
6781N/A License along with this library; if not, write to the Free
6781N/A Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
6781N/AAlso add information on how to contact you by electronic and paper mail.
6781N/AYou should also get your employer (if you work as a programmer) or your
6781N/Aschool, if any, to sign a "copyright disclaimer" for the library, if
6781N/Anecessary. Here is a sample; alter the names:
6781N/A Yoyodyne, Inc., hereby disclaims all copyright interest in the
6781N/A library `Frob' (a library for tweaking knobs) written by James Random Hacker.
6781N/A <signature of Ty Coon>, 1 April 1990