| As a special exception to the GNU Library General Public License, you |
| may link, statically or dynamically, a "work that uses the Library" |
| with a publicly distributed version of the Library to produce an |
| executable file containing portions of the Library, and distribute |
| that executable file under terms of your choice, without any of the |
| additional requirements listed in clause 6 of the GNU Library General |
| Public License. By "a publicly distributed version of the Library", |
| we mean either the unmodified Library as distributed by INRIA, or a |
| modified version of the Library that is distributed under the |
| conditions defined in clause 3 of the GNU Library General Public |
| License. This exception does not however invalidate any other reasons |
| why the executable file might be covered by the GNU Library General |
| Public License. |
| |
| ---------------------------------------------------------------------- |
| |
| GNU LIBRARY GENERAL PUBLIC LICENSE |
| Version 2, June 1991 |
| |
| Copyright (C) 1991 Free Software Foundation, Inc. |
| 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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., 59 Temple Place - Suite 330, Boston, |
| MA 02111-1307, 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! |