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4744bd90 4 <TITLE>Software License Agreement</TITLE>
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9<H1 CLASS="title">Software License Agreement</H1>
10
1a18c85c 11<P ALIGN="CENTER">Copyright 2007-2013 by Apple Inc.<BR>
bc44d920 121 Infinite Loop<BR>
13Cupertino, CA 95014 USA<BR>
ef416fc2 14<BR>
bc44d920 15WWW: <A HREF="http://www.cups.org/">http://www.cups.org/</A>
ef416fc2 16
4744bd90 17<H2 CLASS="title"><A NAME="INTRO">Introduction</A></H2>
ef416fc2 18
1a18c85c 19<P>CUPS<SUP>TM</SUP> is provided under the GNU General Public License ("GPL") and GNU Library General Public License ("LGPL"), Version 2, with an exception for Apple operating systems. A copy of the exception and licenses follow this introduction.</P>
ef416fc2 20
0837b7e8
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21<P>The GNU LGPL applies to the CUPS and CUPS Imaging libraries located in the
22"cups" and "filter" subdirectories of the CUPS source distribution and the files
23in the "test" subdirectory. The GNU GPL applies to the remainder of the CUPS
24distribution.</P>
ef416fc2 25
26<P>For those not familiar with the GNU GPL, the license basically
4744bd90 27allows you to:</P>
ef416fc2 28
29<UL>
30
31 <LI>Use the CUPS software at no charge.</LI>
32
33 <LI>Distribute verbatim copies of the software in source
34 or binary form.</LI>
35
36 <LI>Sell verbatim copies of the software for a media
37 fee, or sell support for the software.</LI>
38
ef416fc2 39</UL>
40
4744bd90 41<P>What this license <EM>does not</EM> allow you to do is make
ef416fc2 42changes or add features to CUPS and then sell a binary
4744bd90 43distribution without source code. You must provide source for any
26d47ec6 44changes or additions to the software, and all code must be
45provided under the GPL or LGPL as appropriate. The only
4744bd90 46exceptions to this are the portions of the CUPS software covered
47by the Apple operating system license exceptions outlined later
48in this license agreement.</P>
ef416fc2 49
50<P>The GNU LGPL relaxes the "link-to" restriction, allowing you
26d47ec6 51to develop applications that use the CUPS and CUPS Imaging
52libraries under other licenses and/or conditions as appropriate
53for your application, driver, or filter.</P>
ef416fc2 54
4744bd90 55
56<H2 CLASS="title"><A NAME="EXCEPTIONS">License Exceptions</A></H2>
ef416fc2 57
bc44d920 58<P>In addition, as the copyright holder of CUPS, Apple Inc. grants
1a18c85c 59the following special exception:</P>
ef416fc2 60
61<OL>
62
63 <LI><B>Apple Operating System Development License
64 Exception</B>;
65
66 <OL TYPE="a">
67
68 <LI>Software that is developed by any person or
69 entity for an Apple Operating System ("Apple
70 OS-Developed Software"), including but not
71 limited to Apple and third party printer
72 drivers, filters, and backends for an Apple
73 Operating System, that is linked to the CUPS
74 imaging library or based on any sample filters
75 or backends provided with CUPS shall not be
76 considered to be a derivative work or collective
77 work based on the CUPS program and is exempt
78 from the mandatory source code release clauses
79 of the GNU GPL. You may therefore distribute
80 linked combinations of the CUPS imaging library
81 with Apple OS-Developed Software without
82 releasing the source code of the Apple
83 OS-Developed Software. You may also use sample
84 filters and backends provided with CUPS to
85 develop Apple OS-Developed Software without
86 releasing the source code of the Apple
87 OS-Developed Software.</LI>
88
89 <LI>An Apple Operating System means any
90 operating system software developed and/or
f3c17241
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91 marketed by Apple Inc., including but not limited
92 to all existing releases and versions of Apple's
93 Darwin, OS X, and OS X Server products and all
94 follow-on releases and future versions thereof.</LI>
ef416fc2 95
96 <LI>This exception is only available for Apple
97 OS-Developed Software and does not apply to
98 software that is distributed for use on other
99 operating systems.</LI>
100
101 <LI>All CUPS software that falls under this
102 license exception have the following text at the
103 top of each source file:
104
105 <BLOCKQUOTE>This file is subject to the Apple
106 OS-Developed Software
107 exception.</BLOCKQUOTE></LI>
108
109 </OL>
110
ef416fc2 111</OL>
112
1a18c85c 113<P>No developer is required to provide this exception in a derived work.</P>
4744bd90 114
ef416fc2 115
f7deaa1a 116<H2 CLASS="title"><A NAME="KERBEROS">Kerberos Support Code</A></H2>
117
118<P>The Kerberos support code ("KSC") is copyright 2006 by Jelmer
119Vernooij and is provided 'as-is', without any express or implied
bc44d920 120warranty. In no event will the author or Apple Inc. be held liable
121for any damages arising from the use of the KSC.</P>
f7deaa1a 122
123<P>Sources files containing KSC have the following text at the top
124of each source file:</P>
125
126<BLOCKQUOTE>This file contains Kerberos support code, copyright
1272006 by Jelmer Vernooij.</BLOCKQUOTE>
128
129<P>The KSC copyright and license apply <EM>only</EM> to
130Kerberos-related feature code in CUPS. Such code is typically
131conditionally compiled based on the present of the
132<TT>HAVE_GSSAPI</TT> preprocessor definition.</P>
133
134<P>Permission is granted to anyone to use the KSC for any
135purpose, including commercial applications, and to alter it and
136redistribute it freely, subject to the following
137restrictions:</P>
138
139<OL>
140
141 <LI>The origin of the KSC must not be misrepresented; you
142 must not claim that you wrote the original software. If
143 you use the KSC in a product, an acknowledgment in the
144 product documentation would be appreciated but is not
145 required.</LI>
146
147 <LI>Altered source versions must be plainly marked as
148 such, and must not be misrepresented as being the
149 original software.</LI>
150
151 <LI>This notice may not be removed or altered from any
152 source distribution.</LI>
153
154</OL>
155
156
4744bd90 157<H2 CLASS="title"><A NAME="TRADEMARKS">Trademarks</A></H2>
ef416fc2 158
8b116e60
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159<P>CUPS and the CUPS logo (the "CUPS Marks") are trademarks of Apple Inc. Apple
160grants you a non-exclusive and non-transferable right to use the CUPS Marks in
161any direct port or binary distribution incorporating CUPS software and in any
162promotional material therefor. You agree that your products will meet the
163highest levels of quality and integrity for similar goods, not be unlawful, and
164be developed, manufactured, and distributed in compliance with this license.
165You will not interfere with Apple's rights in the CUPS Marks, and all use of the
166CUPS Marks shall inure to the benefit of Apple. This license does not apply to
167use of the CUPS Marks in a derivative products, which requires prior written
168permission from Apple Inc.</P>
d7871c8c 169
ef416fc2 170
4744bd90 171<H2 CLASS="title"><A NAME="GPL">GNU GENERAL PUBLIC LICENSE</A></H2>
ef416fc2 172
173<P>Version 2, June 1991
174
175<PRE>
176Copyright 1989, 1991 Free Software Foundation, Inc.
17759 Temple Place, Suite 330, Boston, MA 02111-1307 USA
178
179Everyone is permitted to copy and distribute verbatim
180copies of this license document, but changing it is not allowed.
181</PRE>
182
4744bd90 183<H3>Preamble</H3>
ef416fc2 184
185<P>The licenses for most software are designed to take away your
186freedom to share and change it. By contrast, the GNU General Public
187License is intended to guarantee your freedom to share and change free
188software--to make sure the software is free for all its users. This
189General Public License applies to most of the Free Software
190Foundation's software and to any other program whose authors commit to
191using it. (Some other Free Software Foundation software is covered by
192the GNU Library General Public License instead.) You can apply it to
193your programs, too.
194
195<P>When we speak of free software, we are referring to freedom, not
196price. Our General Public Licenses are designed to make sure that you
197have the freedom to distribute copies of free software (and charge for
198this service if you wish), that you receive source code or can get it
199if you want it, that you can change the software or use pieces of it
200in new free programs; and that you know you can do these things.
201
202<P>To protect your rights, we need to make restrictions that forbid
203anyone to deny you these rights or to ask you to surrender the rights.
204These restrictions translate to certain responsibilities for you if you
205distribute copies of the software, or if you modify it.
206
207<P>For example, if you distribute copies of such a program, whether
208gratis or for a fee, you must give the recipients all the rights that
209you have. You must make sure that they, too, receive or can get the
210source code. And you must show them these terms so they know their
211rights.
212
213<P>We protect your rights with two steps: (1) copyright the software, and
214(2) offer you this license which gives you legal permission to copy,
215distribute and/or modify the software.
216
217<P>Also, for each author's protection and ours, we want to make certain
218that everyone understands that there is no warranty for this free
219software. If the software is modified by someone else and passed on, we
220want its recipients to know that what they have is not the original, so
221that any problems introduced by others will not reflect on the original
222authors' reputations.
223
224<P>Finally, any free program is threatened constantly by software
225patents. We wish to avoid the danger that redistributors of a free
226program will individually obtain patent licenses, in effect making the
227program proprietary. To prevent this, we have made it clear that any
228patent must be licensed for everyone's free use or not licensed at all.
229
230<P>The precise terms and conditions for copying, distribution and
231modification follow.
232
4744bd90 233<H3>GNU GENERAL PUBLIC LICENSE<BR>
234TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION</H3>
ef416fc2 235
236<OL START="0">
237
238<LI>This License applies to any program or other work which contains
239a notice placed by the copyright holder saying it may be distributed
240under the terms of this General Public License. The "Program", below,
241refers to any such program or work, and a "work based on the Program"
242means either the Program or any derivative work under copyright law:
243that is to say, a work containing the Program or a portion of it,
244either verbatim or with modifications and/or translated into another
245language. (Hereinafter, translation is included without limitation in
246the term "modification".) Each licensee is addressed as "you".
247
248<P>Activities other than copying, distribution and modification are not
249covered by this License; they are outside its scope. The act of
250running the Program is not restricted, and the output from the Program
251is covered only if its contents constitute a work based on the
252Program (independent of having been made by running the Program).
253Whether that is true depends on what the Program does.
254
255<LI>You may copy and distribute verbatim copies of the Program's
256source code as you receive it, in any medium, provided that you
257conspicuously and appropriately publish on each copy an appropriate
258copyright notice and disclaimer of warranty; keep intact all the
259notices that refer to this License and to the absence of any warranty;
260and give any other recipients of the Program a copy of this License
261along with the Program.
262
263<P>You may charge a fee for the physical act of transferring a copy, and
264you may at your option offer warranty protection in exchange for a fee.
265
266<LI>You may modify your copy or copies of the Program or any portion
267of it, thus forming a work based on the Program, and copy and
268distribute such modifications or work under the terms of Section 1
269above, provided that you also meet all of these conditions:
270
271<OL TYPE="a">
272
273<LI>You must cause the modified files to carry prominent notices
274stating that you changed the files and the date of any change.
275
276<LI>You must cause any work that you distribute or publish, that in
277whole or in part contains or is derived from the Program or any
278part thereof, to be licensed as a whole at no charge to all third
279parties under the terms of this License.
280
281<LI>if the modified program normally reads commands interactively
282when run, you must cause it, when started running for such
283interactive use in the most ordinary way, to print or display an
284announcement including an appropriate copyright notice and a
285notice that there is no warranty (or else, saying that you provide
286a warranty) and that users may redistribute the program under
287these conditions, and telling the user how to view a copy of this
288License. (Exception: if the Program itself is interactive but
289does not normally print such an announcement, your work based on
290the Program is not required to print an announcement.)
291
292</OL>
293
294<P>These requirements apply to the modified work as a whole. If
295identifiable sections of that work are not derived from the Program,
296and can be reasonably considered independent and separate works in
297themselves, then this License, and its terms, do not apply to those
298sections when you distribute them as separate works. But when you
299distribute the same sections as part of a whole which is a work based
300on the Program, the distribution of the whole must be on the terms of
301this License, whose permissions for other licensees extend to the
302entire whole, and thus to each and every part regardless of who wrote it.
303
304<P>Thus, it is not the intent of this section to claim rights or contest
305your rights to work written entirely by you; rather, the intent is to
306exercise the right to control the distribution of derivative or
307collective works based on the Program.
308
309<P>In addition, mere aggregation of another work not based on the Program
310with the Program (or with a work based on the Program) on a volume of
311a storage or distribution medium does not bring the other work under
312the scope of this License.
313
314<LI>You may copy and distribute the Program (or a work based on it,
315under Section 2) in object code or executable form under the terms of
316Sections 1 and 2 above provided that you also do one of the following:
317
318<OL TYPE="a">
319
320<LI>Accompany it with the complete corresponding machine-readable
321source code, which must be distributed under the terms of Sections
3221 and 2 above on a medium customarily used for software interchange; or,
323
324<LI>Accompany it with a written offer, valid for at least three
325years, to give any third party, for a charge no more than your
326cost of physically performing source distribution, a complete
327machine-readable copy of the corresponding source code, to be
328distributed under the terms of Sections 1 and 2 above on a medium
329customarily used for software interchange; or,
330
331<LI>Accompany it with the information you received as to the offer
332to distribute corresponding source code. (This alternative is
333allowed only for noncommercial distribution and only if you
334received the program in object code or executable form with such
335an offer, in accord with Subsection b above.)
336
337</OL>
338
339<P>The source code for a work means the preferred form of the work for
340making modifications to it. For an executable work, complete source
341code means all the source code for all modules it contains, plus any
342associated interface definition files, plus the scripts used to
343control compilation and installation of the executable. However, as a
344special exception, the source code distributed need not include
345anything that is normally distributed (in either source or binary
346form) with the major components (compiler, kernel, and so on) of the
347operating system on which the executable runs, unless that component
348itself accompanies the executable.
349
350<P>If distribution of executable or object code is made by offering
351access to copy from a designated place, then offering equivalent
352access to copy the source code from the same place counts as
353distribution of the source code, even though third parties are not
354compelled to copy the source along with the object code.
355
356<LI>You may not copy, modify, sublicense, or distribute the Program
357except as expressly provided under this License. Any attempt
358otherwise to copy, modify, sublicense or distribute the Program is
359void, and will automatically terminate your rights under this License.
360However, parties who have received copies, or rights, from you under
361this License will not have their licenses terminated so long as such
362parties remain in full compliance.
363
364<LI>You are not required to accept this License, since you have not
365signed it. However, nothing else grants you permission to modify or
366distribute the Program or its derivative works. These actions are
367prohibited by law if you do not accept this License. Therefore, by
368modifying or distributing the Program (or any work based on the
369Program), you indicate your acceptance of this License to do so, and
370all its terms and conditions for copying, distributing or modifying
371the Program or works based on it.
372
373<LI>Each time you redistribute the Program (or any work based on the
374Program), the recipient automatically receives a license from the
375original licensor to copy, distribute or modify the Program subject to
376these terms and conditions. You may not impose any further
377restrictions on the recipients' exercise of the rights granted herein.
378You are not responsible for enforcing compliance by third parties to
379this License.
380
381<LI>If, as a consequence of a court judgment or allegation of patent
382infringement or for any other reason (not limited to patent issues),
383conditions are imposed on you (whether by court order, agreement or
384otherwise) that contradict the conditions of this License, they do not
385excuse you from the conditions of this License. If you cannot
386distribute so as to satisfy simultaneously your obligations under this
387License and any other pertinent obligations, then as a consequence you
388may not distribute the Program at all. For example, if a patent
389license would not permit royalty-free redistribution of the Program by
390all those who receive copies directly or indirectly through you, then
391the only way you could satisfy both it and this License would be to
392refrain entirely from distribution of the Program.
393
394<P>If any portion of this section is held invalid or unenforceable under
395any particular circumstance, the balance of the section is intended to
396apply and the section as a whole is intended to apply in other
397circumstances.
398
399<P>It is not the purpose of this section to induce you to infringe any
400patents or other property right claims or to contest validity of any
401such claims; this section has the sole purpose of protecting the
402integrity of the free software distribution system, which is
403implemented by public license practices. Many people have made
404generous contributions to the wide range of software distributed
405through that system in reliance on consistent application of that
406system; it is up to the author/donor to decide if he or she is willing
407to distribute software through any other system and a licensee cannot
408impose that choice.
409
410<P>This section is intended to make thoroughly clear what is believed to
411be a consequence of the rest of this License.
412
413<LI>If the distribution and/or use of the Program is restricted in
414certain countries either by patents or by copyrighted interfaces, the
415original copyright holder who places the Program under this License
416may add an explicit geographical distribution limitation excluding
417those countries, so that distribution is permitted only in or among
418countries not thus excluded. In such case, this License incorporates
419the limitation as if written in the body of this License.
420
421<LI>The Free Software Foundation may publish revised and/or new versions
422of the General Public License from time to time. Such new versions will
423be similar in spirit to the present version, but may differ in detail to
424address new problems or concerns.
425
426<P>Each version is given a distinguishing version number. If the Program
427specifies a version number of this License which applies to it and "any
428later version", you have the option of following the terms and conditions
429either of that version or of any later version published by the Free
430Software Foundation. If the Program does not specify a version number of
431this License, you may choose any version ever published by the Free Software
432Foundation.
433
434<LI>If you wish to incorporate parts of the Program into other free
435programs whose distribution conditions are different, write to the author
436to ask for permission. For software which is copyrighted by the Free
437Software Foundation, write to the Free Software Foundation; we sometimes
438make exceptions for this. Our decision will be guided by the two goals
439of preserving the free status of all derivatives of our free software and
440of promoting the sharing and reuse of software generally.
441
442</OL>
443
4744bd90 444<H3>NO WARRANTY</H3>
ef416fc2 445
446<OL START="11">
447
448<LI>BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
449FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
450OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
451PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
452OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
453MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS
454TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE
455PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
456REPAIR OR CORRECTION.
457
458<LI>IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
459WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
460REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
461INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
462OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
463TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
464YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
465PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
466POSSIBILITY OF SUCH DAMAGES.
467
468</OL>
469
4744bd90 470<H3>END OF TERMS AND CONDITIONS</H3>
ef416fc2 471
4744bd90 472<H3>How to Apply These Terms to Your New Programs</H3>
ef416fc2 473
474<P>If you develop a new program, and you want it to be of the greatest
475possible use to the public, the best way to achieve this is to make it
476free software which everyone can redistribute and change under these terms.
477
478<P>To do so, attach the following notices to the program. It is safest
479to attach them to the start of each source file to most effectively
480convey the exclusion of warranty; and each file should have at least
481the "copyright" line and a pointer to where the full notice is found.
482
483<PRE>
484<VAR>one line to give the program's name and an idea of what it does.</VAR>
485Copyright (C) <VAR>yyyy</VAR> <VAR>name of author</VAR>
486
487This program is free software; you can redistribute it and/or
488modify it under the terms of the GNU General Public License
489as published by the Free Software Foundation; either version 2
490of the License, or (at your option) any later version.
491
492This program is distributed in the hope that it will be useful,
493but WITHOUT ANY WARRANTY; without even the implied warranty of
494MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
495GNU General Public License for more details.
496
497You should have received a copy of the GNU General Public License
498along with this program; if not, write to the Free Software
499Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
500</PRE>
501
502<P>Also add information on how to contact you by electronic and paper mail.
503
504<P>If the program is interactive, make it output a short notice like this
505when it starts in an interactive mode:
506
507<PRE>
508Gnomovision version 69, Copyright (C) <VAR>year</VAR> <VAR>name of author</VAR>
509Gnomovision comes with ABSOLUTELY NO WARRANTY; for details
510type `show w'. This is free software, and you are welcome
321d8d57 511to redistribute it under certain conditions; type `show c'
ef416fc2 512for details.
513</PRE>
514
515<P>The hypothetical commands <SAMP>`show w'</SAMP> and <SAMP>`show c'</SAMP> should show
516the appropriate parts of the General Public License. Of course, the
517commands you use may be called something other than <SAMP>`show w'</SAMP> and
518<SAMP>`show c'</SAMP>; they could even be mouse-clicks or menu items--whatever
519suits your program.
520
521<P>You should also get your employer (if you work as a programmer) or your
522school, if any, to sign a "copyright disclaimer" for the program, if
523necessary. Here is a sample; alter the names:
524
525<PRE>
526Yoyodyne, Inc., hereby disclaims all copyright
527interest in the program `Gnomovision'
321d8d57 528(which makes passes at compilers) written
ef416fc2 529by James Hacker.
530
531<VAR>signature of Ty Coon</VAR>, 1 April 1989
532Ty Coon, President of Vice
533</PRE>
534
4744bd90 535<H2 CLASS="title"><A NAME="LGPL">GNU LIBRARY GENERAL PUBLIC LICENSE</A></H2>
ef416fc2 536
537<P>Version 2, June 1991
538
539<PRE>
540Copyright (C) 1991 Free Software Foundation, Inc.
54159 Temple Place - Suite 330, Boston, MA 02111-1307, USA
542Everyone is permitted to copy and distribute verbatim copies
543of this license document, but changing it is not allowed.
544
545[This is the first released version of the library GPL. It is
546 numbered 2 because it goes with version 2 of the ordinary GPL.]
547</PRE>
548
4744bd90 549<H3>Preamble</H3>
ef416fc2 550
551<P>The licenses for most software are designed to take away your
552freedom to share and change it. By contrast, the GNU General Public
553Licenses are intended to guarantee your freedom to share and change
554free software--to make sure the software is free for all its users.
555
556<P>This license, the Library General Public License, applies to some
557specially designated Free Software Foundation software, and to any
558other libraries whose authors decide to use it. You can use it for
559your libraries, too.
560
561<P>When we speak of free software, we are referring to freedom, not
562price. Our General Public Licenses are designed to make sure that you
563have the freedom to distribute copies of free software (and charge for
564this service if you wish), that you receive source code or can get it
565if you want it, that you can change the software or use pieces of it
566in new free programs; and that you know you can do these things.
567
568<P>To protect your rights, we need to make restrictions that forbid
569anyone to deny you these rights or to ask you to surrender the rights.
570These restrictions translate to certain responsibilities for you if
571you distribute copies of the library, or if you modify it.
572
573<P>For example, if you distribute copies of the library, whether gratis
574or for a fee, you must give the recipients all the rights that we gave
575you. You must make sure that they, too, receive or can get the source
576code. If you link a program with the library, you must provide
577complete object files to the recipients so that they can relink them
578with the library, after making changes to the library and recompiling
579it. And you must show them these terms so they know their rights.
580
581<P>Our method of protecting your rights has two steps: (1) copyright
582the library, and (2) offer you this license which gives you legal
583permission to copy, distribute and/or modify the library.
584
585<P>Also, for each distributor's protection, we want to make certain
586that everyone understands that there is no warranty for this free
587library. If the library is modified by someone else and passed on, we
588want its recipients to know that what they have is not the original
589version, so that any problems introduced by others will not reflect on
590the original authors' reputations.
591
592<P>Finally, any free program is threatened constantly by software
593patents. We wish to avoid the danger that companies distributing free
594software will individually obtain patent licenses, thus in effect
595transforming the program into proprietary software. To prevent this,
596we have made it clear that any patent must be licensed for everyone's
597free use or not licensed at all.
598
599<P>Most GNU software, including some libraries, is covered by the ordinary
600GNU General Public License, which was designed for utility programs. This
601license, the GNU Library General Public License, applies to certain
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4744bd90 1011<H3>How to Apply These Terms to Your New Libraries</H3>
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1054<VAR>signature of Ty Coon</VAR>, 1 April 1990
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