2 <!-- SECTION: Getting Started -->
4 <TITLE>Software License Agreement
</TITLE>
8 <P ALIGN=
"CENTER">Copyright
2007-
2009 by Apple Inc.
<BR>
10 Cupertino, CA
95014 USA
<BR>
12 WWW:
<A HREF=
"http://www.cups.org/">http://www.cups.org/
</A>
14 <H2 CLASS=
"title"><A NAME=
"INTRO">Introduction
</A></H2>
16 <P>CUPS
<SUP>TM
</SUP> is provided under the GNU General Public License (
"GPL")
17 and GNU Library General Public License (
"LGPL"), Version
2, with exceptions for
18 Apple operating systems and the OpenSSL toolkit. A copy of the exceptions and
19 licenses follow this introduction.
</P>
21 <P>The GNU LGPL applies to the CUPS and CUPS Imaging libraries
22 located in the
"cups" and
"filter" subdirectories of the CUPS
23 source distribution and in the
"cups" include directory and
24 library files in the binary distributions. The GNU GPL applies to
25 the remainder of the CUPS distribution, including the
"pdftops"
26 filter which is based upon Xpdf.
</P>
28 <P>For those not familiar with the GNU GPL, the license basically
33 <LI>Use the CUPS software at no charge.
</LI>
35 <LI>Distribute verbatim copies of the software in source
38 <LI>Sell verbatim copies of the software for a media
39 fee, or sell support for the software.
</LI>
43 <P>What this license
<EM>does not
</EM> allow you to do is make
44 changes or add features to CUPS and then sell a binary
45 distribution without source code. You must provide source for any
46 changes or additions to the software, and all code must be
47 provided under the GPL or LGPL as appropriate. The only
48 exceptions to this are the portions of the CUPS software covered
49 by the Apple operating system license exceptions outlined later
50 in this license agreement.
</P>
52 <P>The GNU LGPL relaxes the
"link-to" restriction, allowing you
53 to develop applications that use the CUPS and CUPS Imaging
54 libraries under other licenses and/or conditions as appropriate
55 for your application, driver, or filter.
</P>
58 <H2 CLASS=
"title"><A NAME=
"EXCEPTIONS">License Exceptions
</A></H2>
60 <P>In addition, as the copyright holder of CUPS, Apple Inc. grants
61 the following special exceptions:
</P>
65 <LI><B>Apple Operating System Development License
70 <LI>Software that is developed by any person or
71 entity for an Apple Operating System (
"Apple
72 OS-Developed Software"), including but not
73 limited to Apple and third party printer
74 drivers, filters, and backends for an Apple
75 Operating System, that is linked to the CUPS
76 imaging library or based on any sample filters
77 or backends provided with CUPS shall not be
78 considered to be a derivative work or collective
79 work based on the CUPS program and is exempt
80 from the mandatory source code release clauses
81 of the GNU GPL. You may therefore distribute
82 linked combinations of the CUPS imaging library
83 with Apple OS-Developed Software without
84 releasing the source code of the Apple
85 OS-Developed Software. You may also use sample
86 filters and backends provided with CUPS to
87 develop Apple OS-Developed Software without
88 releasing the source code of the Apple
89 OS-Developed Software.
</LI>
91 <LI>An Apple Operating System means any
92 operating system software developed and/or
93 marketed by Apple Computer, Inc., including but
94 not limited to all existing releases and
95 versions of Apple's Darwin, Mac OS X, and Mac OS
96 X Server products and all follow-on releases and
97 future versions thereof.
</LI>
99 <LI>This exception is only available for Apple
100 OS-Developed Software and does not apply to
101 software that is distributed for use on other
102 operating systems.
</LI>
104 <LI>All CUPS software that falls under this
105 license exception have the following text at the
106 top of each source file:
108 <BLOCKQUOTE>This file is subject to the Apple
109 OS-Developed Software
110 exception.
</BLOCKQUOTE></LI>
114 <LI><B>OpenSSL Toolkit License Exception
</B>;
118 <LI>Apple Inc. explicitly allows the
119 compilation and distribution of the CUPS
120 software with the OpenSSL Toolkit.
</LI>
126 <P>No developer is required to provide these exceptions in a
130 <H2 CLASS=
"title"><A NAME=
"KERBEROS">Kerberos Support Code
</A></H2>
132 <P>The Kerberos support code (
"KSC") is copyright
2006 by Jelmer
133 Vernooij and is provided 'as-is', without any express or implied
134 warranty. In no event will the author or Apple Inc. be held liable
135 for any damages arising from the use of the KSC.
</P>
137 <P>Sources files containing KSC have the following text at the top
138 of each source file:
</P>
140 <BLOCKQUOTE>This file contains Kerberos support code, copyright
141 2006 by Jelmer Vernooij.
</BLOCKQUOTE>
143 <P>The KSC copyright and license apply
<EM>only
</EM> to
144 Kerberos-related feature code in CUPS. Such code is typically
145 conditionally compiled based on the present of the
146 <TT>HAVE_GSSAPI
</TT> preprocessor definition.
</P>
148 <P>Permission is granted to anyone to use the KSC for any
149 purpose, including commercial applications, and to alter it and
150 redistribute it freely, subject to the following
155 <LI>The origin of the KSC must not be misrepresented; you
156 must not claim that you wrote the original software. If
157 you use the KSC in a product, an acknowledgment in the
158 product documentation would be appreciated but is not
161 <LI>Altered source versions must be plainly marked as
162 such, and must not be misrepresented as being the
163 original software.
</LI>
165 <LI>This notice may not be removed or altered from any
166 source distribution.
</LI>
171 <H2 CLASS=
"title"><A NAME=
"TRADEMARKS">Trademarks
</A></H2>
173 <P>CUPS and the CUPS logo (the
"CUPS Marks") are trademarks of Apple Inc. Apple
174 grants you a non-exclusive and non-transferable right to use the CUPS Marks in
175 any direct port or binary distribution incorporating CUPS software and in any
176 promotional material therefor. You agree that your products will meet the
177 highest levels of quality and integrity for similar goods, not be unlawful, and
178 be developed, manufactured, and distributed in compliance with this license.
179 You will not interfere with Apple's rights in the CUPS Marks, and all use of the
180 CUPS Marks shall inure to the benefit of Apple. This license does not apply to
181 use of the CUPS Marks in a derivative products, which requires prior written
182 permission from Apple Inc.
</P>
185 <H2 CLASS=
"title"><A NAME=
"GPL">GNU GENERAL PUBLIC LICENSE
</A></H2>
187 <P>Version
2, June
1991
190 Copyright
1989,
1991 Free Software Foundation, Inc.
191 59 Temple Place, Suite
330, Boston, MA
02111-
1307 USA
193 Everyone is permitted to copy and distribute verbatim
194 copies of this license document, but changing it is not allowed.
199 <P>The licenses for most software are designed to take away your
200 freedom to share and change it. By contrast, the GNU General Public
201 License is intended to guarantee your freedom to share and change free
202 software--to make sure the software is free for all its users. This
203 General Public License applies to most of the Free Software
204 Foundation's software and to any other program whose authors commit to
205 using it. (Some other Free Software Foundation software is covered by
206 the GNU Library General Public License instead.) You can apply it to
209 <P>When we speak of free software, we are referring to freedom, not
210 price. Our General Public Licenses are designed to make sure that you
211 have the freedom to distribute copies of free software (and charge for
212 this service if you wish), that you receive source code or can get it
213 if you want it, that you can change the software or use pieces of it
214 in new free programs; and that you know you can do these things.
216 <P>To protect your rights, we need to make restrictions that forbid
217 anyone to deny you these rights or to ask you to surrender the rights.
218 These restrictions translate to certain responsibilities for you if you
219 distribute copies of the software, or if you modify it.
221 <P>For example, if you distribute copies of such a program, whether
222 gratis or for a fee, you must give the recipients all the rights that
223 you have. You must make sure that they, too, receive or can get the
224 source code. And you must show them these terms so they know their
227 <P>We protect your rights with two steps: (
1) copyright the software, and
228 (
2) offer you this license which gives you legal permission to copy,
229 distribute and/or modify the software.
231 <P>Also, for each author's protection and ours, we want to make certain
232 that everyone understands that there is no warranty for this free
233 software. If the software is modified by someone else and passed on, we
234 want its recipients to know that what they have is not the original, so
235 that any problems introduced by others will not reflect on the original
236 authors' reputations.
238 <P>Finally, any free program is threatened constantly by software
239 patents. We wish to avoid the danger that redistributors of a free
240 program will individually obtain patent licenses, in effect making the
241 program proprietary. To prevent this, we have made it clear that any
242 patent must be licensed for everyone's free use or not licensed at all.
244 <P>The precise terms and conditions for copying, distribution and
247 <H3>GNU GENERAL PUBLIC LICENSE
<BR>
248 TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
</H3>
252 <LI>This License applies to any program or other work which contains
253 a notice placed by the copyright holder saying it may be distributed
254 under the terms of this General Public License. The
"Program", below,
255 refers to any such program or work, and a
"work based on the Program"
256 means either the Program or any derivative work under copyright law:
257 that is to say, a work containing the Program or a portion of it,
258 either verbatim or with modifications and/or translated into another
259 language. (Hereinafter, translation is included without limitation in
260 the term
"modification".) Each licensee is addressed as
"you".
262 <P>Activities other than copying, distribution and modification are not
263 covered by this License; they are outside its scope. The act of
264 running the Program is not restricted, and the output from the Program
265 is covered only if its contents constitute a work based on the
266 Program (independent of having been made by running the Program).
267 Whether that is true depends on what the Program does.
269 <LI>You may copy and distribute verbatim copies of the Program's
270 source code as you receive it, in any medium, provided that you
271 conspicuously and appropriately publish on each copy an appropriate
272 copyright notice and disclaimer of warranty; keep intact all the
273 notices that refer to this License and to the absence of any warranty;
274 and give any other recipients of the Program a copy of this License
275 along with the Program.
277 <P>You may charge a fee for the physical act of transferring a copy, and
278 you may at your option offer warranty protection in exchange for a fee.
280 <LI>You may modify your copy or copies of the Program or any portion
281 of it, thus forming a work based on the Program, and copy and
282 distribute such modifications or work under the terms of Section
1
283 above, provided that you also meet all of these conditions:
287 <LI>You must cause the modified files to carry prominent notices
288 stating that you changed the files and the date of any change.
290 <LI>You must cause any work that you distribute or publish, that in
291 whole or in part contains or is derived from the Program or any
292 part thereof, to be licensed as a whole at no charge to all third
293 parties under the terms of this License.
295 <LI>if the modified program normally reads commands interactively
296 when run, you must cause it, when started running for such
297 interactive use in the most ordinary way, to print or display an
298 announcement including an appropriate copyright notice and a
299 notice that there is no warranty (or else, saying that you provide
300 a warranty) and that users may redistribute the program under
301 these conditions, and telling the user how to view a copy of this
302 License. (Exception: if the Program itself is interactive but
303 does not normally print such an announcement, your work based on
304 the Program is not required to print an announcement.)
308 <P>These requirements apply to the modified work as a whole. If
309 identifiable sections of that work are not derived from the Program,
310 and can be reasonably considered independent and separate works in
311 themselves, then this License, and its terms, do not apply to those
312 sections when you distribute them as separate works. But when you
313 distribute the same sections as part of a whole which is a work based
314 on the Program, the distribution of the whole must be on the terms of
315 this License, whose permissions for other licensees extend to the
316 entire whole, and thus to each and every part regardless of who wrote it.
318 <P>Thus, it is not the intent of this section to claim rights or contest
319 your rights to work written entirely by you; rather, the intent is to
320 exercise the right to control the distribution of derivative or
321 collective works based on the Program.
323 <P>In addition, mere aggregation of another work not based on the Program
324 with the Program (or with a work based on the Program) on a volume of
325 a storage or distribution medium does not bring the other work under
326 the scope of this License.
328 <LI>You may copy and distribute the Program (or a work based on it,
329 under Section
2) in object code or executable form under the terms of
330 Sections
1 and
2 above provided that you also do one of the following:
334 <LI>Accompany it with the complete corresponding machine-readable
335 source code, which must be distributed under the terms of Sections
336 1 and
2 above on a medium customarily used for software interchange; or,
338 <LI>Accompany it with a written offer, valid for at least three
339 years, to give any third party, for a charge no more than your
340 cost of physically performing source distribution, a complete
341 machine-readable copy of the corresponding source code, to be
342 distributed under the terms of Sections
1 and
2 above on a medium
343 customarily used for software interchange; or,
345 <LI>Accompany it with the information you received as to the offer
346 to distribute corresponding source code. (This alternative is
347 allowed only for noncommercial distribution and only if you
348 received the program in object code or executable form with such
349 an offer, in accord with Subsection b above.)
353 <P>The source code for a work means the preferred form of the work for
354 making modifications to it. For an executable work, complete source
355 code means all the source code for all modules it contains, plus any
356 associated interface definition files, plus the scripts used to
357 control compilation and installation of the executable. However, as a
358 special exception, the source code distributed need not include
359 anything that is normally distributed (in either source or binary
360 form) with the major components (compiler, kernel, and so on) of the
361 operating system on which the executable runs, unless that component
362 itself accompanies the executable.
364 <P>If distribution of executable or object code is made by offering
365 access to copy from a designated place, then offering equivalent
366 access to copy the source code from the same place counts as
367 distribution of the source code, even though third parties are not
368 compelled to copy the source along with the object code.
370 <LI>You may not copy, modify, sublicense, or distribute the Program
371 except as expressly provided under this License. Any attempt
372 otherwise to copy, modify, sublicense or distribute the Program is
373 void, and will automatically terminate your rights under this License.
374 However, parties who have received copies, or rights, from you under
375 this License will not have their licenses terminated so long as such
376 parties remain in full compliance.
378 <LI>You are not required to accept this License, since you have not
379 signed it. However, nothing else grants you permission to modify or
380 distribute the Program or its derivative works. These actions are
381 prohibited by law if you do not accept this License. Therefore, by
382 modifying or distributing the Program (or any work based on the
383 Program), you indicate your acceptance of this License to do so, and
384 all its terms and conditions for copying, distributing or modifying
385 the Program or works based on it.
387 <LI>Each time you redistribute the Program (or any work based on the
388 Program), the recipient automatically receives a license from the
389 original licensor to copy, distribute or modify the Program subject to
390 these terms and conditions. You may not impose any further
391 restrictions on the recipients' exercise of the rights granted herein.
392 You are not responsible for enforcing compliance by third parties to
395 <LI>If, as a consequence of a court judgment or allegation of patent
396 infringement or for any other reason (not limited to patent issues),
397 conditions are imposed on you (whether by court order, agreement or
398 otherwise) that contradict the conditions of this License, they do not
399 excuse you from the conditions of this License. If you cannot
400 distribute so as to satisfy simultaneously your obligations under this
401 License and any other pertinent obligations, then as a consequence you
402 may not distribute the Program at all. For example, if a patent
403 license would not permit royalty-free redistribution of the Program by
404 all those who receive copies directly or indirectly through you, then
405 the only way you could satisfy both it and this License would be to
406 refrain entirely from distribution of the Program.
408 <P>If any portion of this section is held invalid or unenforceable under
409 any particular circumstance, the balance of the section is intended to
410 apply and the section as a whole is intended to apply in other
413 <P>It is not the purpose of this section to induce you to infringe any
414 patents or other property right claims or to contest validity of any
415 such claims; this section has the sole purpose of protecting the
416 integrity of the free software distribution system, which is
417 implemented by public license practices. Many people have made
418 generous contributions to the wide range of software distributed
419 through that system in reliance on consistent application of that
420 system; it is up to the author/donor to decide if he or she is willing
421 to distribute software through any other system and a licensee cannot
424 <P>This section is intended to make thoroughly clear what is believed to
425 be a consequence of the rest of this License.
427 <LI>If the distribution and/or use of the Program is restricted in
428 certain countries either by patents or by copyrighted interfaces, the
429 original copyright holder who places the Program under this License
430 may add an explicit geographical distribution limitation excluding
431 those countries, so that distribution is permitted only in or among
432 countries not thus excluded. In such case, this License incorporates
433 the limitation as if written in the body of this License.
435 <LI>The Free Software Foundation may publish revised and/or new versions
436 of the General Public License from time to time. Such new versions will
437 be similar in spirit to the present version, but may differ in detail to
438 address new problems or concerns.
440 <P>Each version is given a distinguishing version number. If the Program
441 specifies a version number of this License which applies to it and
"any
442 later version", you have the option of following the terms and conditions
443 either of that version or of any later version published by the Free
444 Software Foundation. If the Program does not specify a version number of
445 this License, you may choose any version ever published by the Free Software
448 <LI>If you wish to incorporate parts of the Program into other free
449 programs whose distribution conditions are different, write to the author
450 to ask for permission. For software which is copyrighted by the Free
451 Software Foundation, write to the Free Software Foundation; we sometimes
452 make exceptions for this. Our decision will be guided by the two goals
453 of preserving the free status of all derivatives of our free software and
454 of promoting the sharing and reuse of software generally.
462 <LI>BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
463 FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
464 OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
465 PROVIDE THE PROGRAM
"AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
466 OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
467 MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS
468 TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE
469 PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
470 REPAIR OR CORRECTION.
472 <LI>IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
473 WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
474 REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
475 INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
476 OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
477 TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
478 YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
479 PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
480 POSSIBILITY OF SUCH DAMAGES.
484 <H3>END OF TERMS AND CONDITIONS
</H3>
486 <H3>How to Apply These Terms to Your New Programs
</H3>
488 <P>If you develop a new program, and you want it to be of the greatest
489 possible use to the public, the best way to achieve this is to make it
490 free software which everyone can redistribute and change under these terms.
492 <P>To do so, attach the following notices to the program. It is safest
493 to attach them to the start of each source file to most effectively
494 convey the exclusion of warranty; and each file should have at least
495 the
"copyright" line and a pointer to where the full notice is found.
498 <VAR>one line to give the program's name and an idea of what it does.
</VAR>
499 Copyright (C)
<VAR>yyyy
</VAR> <VAR>name of author
</VAR>
501 This program is free software; you can redistribute it and/or
502 modify it under the terms of the GNU General Public License
503 as published by the Free Software Foundation; either version
2
504 of the License, or (at your option) any later version.
506 This program is distributed in the hope that it will be useful,
507 but WITHOUT ANY WARRANTY; without even the implied warranty of
508 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
509 GNU General Public License for more details.
511 You should have received a copy of the GNU General Public License
512 along with this program; if not, write to the Free Software
513 Foundation, Inc.,
59 Temple Place - Suite
330, Boston, MA
02111-
1307, USA.
516 <P>Also add information on how to contact you by electronic and paper mail.
518 <P>If the program is interactive, make it output a short notice like this
519 when it starts in an interactive mode:
522 Gnomovision version
69, Copyright (C)
<VAR>year
</VAR> <VAR>name of author
</VAR>
523 Gnomovision comes with ABSOLUTELY NO WARRANTY; for details
524 type `show w'. This is free software, and you are welcome
525 to redistribute it under certain conditions; type `show c'
529 <P>The hypothetical commands
<SAMP>`show w'
</SAMP> and
<SAMP>`show c'
</SAMP> should show
530 the appropriate parts of the General Public License. Of course, the
531 commands you use may be called something other than
<SAMP>`show w'
</SAMP> and
532 <SAMP>`show c'
</SAMP>; they could even be mouse-clicks or menu items--whatever
535 <P>You should also get your employer (if you work as a programmer) or your
536 school, if any, to sign a
"copyright disclaimer" for the program, if
537 necessary. Here is a sample; alter the names:
540 Yoyodyne, Inc., hereby disclaims all copyright
541 interest in the program `Gnomovision'
542 (which makes passes at compilers) written
545 <VAR>signature of Ty Coon
</VAR>,
1 April
1989
546 Ty Coon, President of Vice
549 <H2 CLASS=
"title"><A NAME=
"LGPL">GNU LIBRARY GENERAL PUBLIC LICENSE
</A></H2>
551 <P>Version
2, June
1991
554 Copyright (C)
1991 Free Software Foundation, Inc.
555 59 Temple Place - Suite
330, Boston, MA
02111-
1307, USA
556 Everyone is permitted to copy and distribute verbatim copies
557 of this license document, but changing it is not allowed.
559 [This is the first released version of the library GPL. It is
560 numbered
2 because it goes with version
2 of the ordinary GPL.]
565 <P>The licenses for most software are designed to take away your
566 freedom to share and change it. By contrast, the GNU General Public
567 Licenses are intended to guarantee your freedom to share and change
568 free software--to make sure the software is free for all its users.
570 <P>This license, the Library General Public License, applies to some
571 specially designated Free Software Foundation software, and to any
572 other libraries whose authors decide to use it. You can use it for
575 <P>When we speak of free software, we are referring to freedom, not
576 price. Our General Public Licenses are designed to make sure that you
577 have the freedom to distribute copies of free software (and charge for
578 this service if you wish), that you receive source code or can get it
579 if you want it, that you can change the software or use pieces of it
580 in new free programs; and that you know you can do these things.
582 <P>To protect your rights, we need to make restrictions that forbid
583 anyone to deny you these rights or to ask you to surrender the rights.
584 These restrictions translate to certain responsibilities for you if
585 you distribute copies of the library, or if you modify it.
587 <P>For example, if you distribute copies of the library, whether gratis
588 or for a fee, you must give the recipients all the rights that we gave
589 you. You must make sure that they, too, receive or can get the source
590 code. If you link a program with the library, you must provide
591 complete object files to the recipients so that they can relink them
592 with the library, after making changes to the library and recompiling
593 it. And you must show them these terms so they know their rights.
595 <P>Our method of protecting your rights has two steps: (
1) copyright
596 the library, and (
2) offer you this license which gives you legal
597 permission to copy, distribute and/or modify the library.
599 <P>Also, for each distributor's protection, we want to make certain
600 that everyone understands that there is no warranty for this free
601 library. If the library is modified by someone else and passed on, we
602 want its recipients to know that what they have is not the original
603 version, so that any problems introduced by others will not reflect on
604 the original authors' reputations.
606 <P>Finally, any free program is threatened constantly by software
607 patents. We wish to avoid the danger that companies distributing free
608 software will individually obtain patent licenses, thus in effect
609 transforming the program into proprietary software. To prevent this,
610 we have made it clear that any patent must be licensed for everyone's
611 free use or not licensed at all.
613 <P>Most GNU software, including some libraries, is covered by the ordinary
614 GNU General Public License, which was designed for utility programs. This
615 license, the GNU Library General Public License, applies to certain
616 designated libraries. This license is quite different from the ordinary
617 one; be sure to read it in full, and don't assume that anything in it is
618 the same as in the ordinary license.
620 <P>The reason we have a separate public license for some libraries is that
621 they blur the distinction we usually make between modifying or adding to a
622 program and simply using it. Linking a program with a library, without
623 changing the library, is in some sense simply using the library, and is
624 analogous to running a utility program or application program. However, in
625 a textual and legal sense, the linked executable is a combined work, a
626 derivative of the original library, and the ordinary General Public License
629 <P>Because of this blurred distinction, using the ordinary General
630 Public License for libraries did not effectively promote software
631 sharing, because most developers did not use the libraries. We
632 concluded that weaker conditions might promote sharing better.
634 <P>However, unrestricted linking of non-free programs would deprive the
635 users of those programs of all benefit from the free status of the
636 libraries themselves. This Library General Public License is intended to
637 permit developers of non-free programs to use free libraries, while
638 preserving your freedom as a user of such programs to change the free
639 libraries that are incorporated in them. (We have not seen how to achieve
640 this as regards changes in header files, but we have achieved it as regards
641 changes in the actual functions of the Library.) The hope is that this
642 will lead to faster development of free libraries.
644 <P>The precise terms and conditions for copying, distribution and
645 modification follow. Pay close attention to the difference between a
646 "work based on the library" and a
"work that uses the library". The
647 former contains code derived from the library, while the latter only
648 works together with the library.
650 <P>Note that it is possible for a library to be covered by the ordinary
651 General Public License rather than by this special one.
653 <H3>TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
</H3>
655 <P><STRONG>0.
</STRONG>
656 This License Agreement applies to any software library which
657 contains a notice placed by the copyright holder or other authorized
658 party saying it may be distributed under the terms of this Library
659 General Public License (also called
"this License"). Each licensee is
662 <P>A
"library" means a collection of software functions and/or data
663 prepared so as to be conveniently linked with application programs
664 (which use some of those functions and data) to form executables.
666 <P>The
"Library", below, refers to any such software library or work
667 which has been distributed under these terms. A
"work based on the
668 Library" means either the Library or any derivative work under
669 copyright law: that is to say, a work containing the Library or a
670 portion of it, either verbatim or with modifications and/or translated
671 straightforwardly into another language. (Hereinafter, translation is
672 included without limitation in the term
"modification".)
674 <P>"Source code" for a work means the preferred form of the work for
675 making modifications to it. For a library, complete source code means
676 all the source code for all modules it contains, plus any associated
677 interface definition files, plus the scripts used to control compilation
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1072 <P>That's all there is to it!
projects / thirdparty / cups.git / blob