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3 <title>The Glasgow Haskell Compilation System License</title>
7 <h1>The Glasgow Haskell Compilation System License</h1>
9 The Glasgow Haskell Compilation System (GHC) is a bundle of software
10 components covered by three different licenses as detailed below.
13 <li><a href="#compiler">Compiler, runtime system, supporting infrastructure,
14 and almost all libraries</a> (BSD3)</li>
15 <li><a href="#gmp">GNU MP Bignum Library, aka GMP</a> (LGPL)</li>
16 <li><a href="#readline">GNU Readline Library and System.Console.Readline</a>
20 Note that by default the GMP will be statically linked into any binary
21 produced by GHC. Software with a non-GPL compatible license will have to
22 ensure that the conditions of the LGPL are met; for example, by forcing GMP to
23 link dynamically instead.
29 <h2>Compiler, runtime system, supporting infrastructure, and almost all
33 Copyright [2002..2008], The University Court of the University of Glasgow and
34 others. All rights reserved.
37 Redistribution and use in source and binary forms, with or without
38 modification, are permitted provided that the following conditions are met:
41 <li>Redistributions of source code must retain the above copyright notice,
42 this list of conditions and the following disclaimer.</li>
43 <li>Redistributions in binary form must reproduce the above copyright
44 notice, this list of conditions and the following disclaimer in the
45 documentation and/or other materials provided with the distribution.</li>
46 <li>Neither name of the University nor the names of its contributors may be
47 used to endorse or promote products derived from this software without
48 specific prior written permission.</li>
51 THIS SOFTWARE IS PROVIDED BY THE UNIVERSITY COURT OF THE UNIVERSITY OF
52 GLASGOW AND THE CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
53 INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
54 FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
55 UNIVERSITY COURT OF THE UNIVERSITY OF GLASGOW OR THE CONTRIBUTORS BE LIABLE
56 FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
57 DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
58 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
59 CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
60 LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
61 OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
68 <h2>GNU MP Bignum Library</h2>
71 <h3>GNU LESSER GENERAL PUBLIC LICENSE</h3>
72 <p>Version 3, 29 June 2007</p>
74 <p>Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/></p><p>
75 Everyone is permitted to copy and distribute verbatim copies
76 of this license document, but changing it is not allowed.</p>
78 <p>This version of the GNU Lesser General Public License incorporates
79 the terms and conditions of version 3 of the GNU General Public
80 License, supplemented by the additional permissions listed below.</p>
82 <h4><a name="section0"></a>0. Additional Definitions.</h4>
84 <p>As used herein, “this License” refers to version 3 of the GNU Lesser
85 General Public License, and the “GNU GPL” refers to version 3 of the GNU
86 General Public License.</p>
88 <p>“The Library” refers to a covered work governed by this License,
89 other than an Application or a Combined Work as defined below.</p>
91 <p>An “Application” is any work that makes use of an interface provided
92 by the Library, but which is not otherwise based on the Library.
93 Defining a subclass of a class defined by the Library is deemed a mode
94 of using an interface provided by the Library.</p>
96 <p>A “Combined Work” is a work produced by combining or linking an
97 Application with the Library. The particular version of the Library
98 with which the Combined Work was made is also called the “Linked
101 <p>The “Minimal Corresponding Source” for a Combined Work means the
102 Corresponding Source for the Combined Work, excluding any source code
103 for portions of the Combined Work that, considered in isolation, are
104 based on the Application, and not on the Linked Version.</p>
106 <p>The “Corresponding Application Code” for a Combined Work means the
107 object code and/or source code for the Application, including any data
108 and utility programs needed for reproducing the Combined Work from the
109 Application, but excluding the System Libraries of the Combined Work.</p>
111 <h4><a name="section1"></a>1. Exception to Section 3 of the GNU GPL.</h4>
113 <p>You may convey a covered work under sections 3 and 4 of this License
114 without being bound by section 3 of the GNU GPL.</p>
116 <h4><a name="section2"></a>2. Conveying Modified Versions.</h4>
118 <p>If you modify a copy of the Library, and, in your modifications, a
119 facility refers to a function or data to be supplied by an Application
120 that uses the facility (other than as an argument passed when the
121 facility is invoked), then you may convey a copy of the modified
125 <li>a) under this License, provided that you make a good faith effort to
126 ensure that, in the event an Application does not supply the
127 function or data, the facility still operates, and performs
128 whatever part of its purpose remains meaningful, or</li>
130 <li>b) under the GNU GPL, with none of the additional permissions of
131 this License applicable to that copy.</li>
134 <h4><a name="section3"></a>3. Object Code Incorporating Material from Library Header Files.</h4>
136 <p>The object code form of an Application may incorporate material from
137 a header file that is part of the Library. You may convey such object
138 code under terms of your choice, provided that, if the incorporated
139 material is not limited to numerical parameters, data structure
140 layouts and accessors, or small macros, inline functions and templates
141 (ten or fewer lines in length), you do both of the following:</p>
144 <li>a) Give prominent notice with each copy of the object code that the
145 Library is used in it and that the Library and its use are
146 covered by this License.</li>
148 <li>b) Accompany the object code with a copy of the GNU GPL and this license
152 <h4><a name="section4"></a>4. Combined Works.</h4>
154 <p>You may convey a Combined Work under terms of your choice that,
155 taken together, effectively do not restrict modification of the
156 portions of the Library contained in the Combined Work and reverse
157 engineering for debugging such modifications, if you also do each of
161 <li>a) Give prominent notice with each copy of the Combined Work that
162 the Library is used in it and that the Library and its use are
163 covered by this License.</li>
165 <li>b) Accompany the Combined Work with a copy of the GNU GPL and this license
168 <li>c) For a Combined Work that displays copyright notices during
169 execution, include the copyright notice for the Library among
170 these notices, as well as a reference directing the user to the
171 copies of the GNU GPL and this license document.</li>
173 <li>d) Do one of the following:
176 <li>0) Convey the Minimal Corresponding Source under the terms of this
177 License, and the Corresponding Application Code in a form
178 suitable for, and under terms that permit, the user to
179 recombine or relink the Application with a modified version of
180 the Linked Version to produce a modified Combined Work, in the
181 manner specified by section 6 of the GNU GPL for conveying
182 Corresponding Source.</li>
184 <li>1) Use a suitable shared library mechanism for linking with the
185 Library. A suitable mechanism is one that (a) uses at run time
186 a copy of the Library already present on the user's computer
187 system, and (b) will operate properly with a modified version
188 of the Library that is interface-compatible with the Linked
192 <li>e) Provide Installation Information, but only if you would otherwise
193 be required to provide such information under section 6 of the
194 GNU GPL, and only to the extent that such information is
195 necessary to install and execute a modified version of the
196 Combined Work produced by recombining or relinking the
197 Application with a modified version of the Linked Version. (If
198 you use option 4d0, the Installation Information must accompany
199 the Minimal Corresponding Source and Corresponding Application
200 Code. If you use option 4d1, you must provide the Installation
201 Information in the manner specified by section 6 of the GNU GPL
202 for conveying Corresponding Source.)</li>
205 <h4><a name="section5"></a>5. Combined Libraries.</h4>
207 <p>You may place library facilities that are a work based on the
208 Library side by side in a single library together with other library
209 facilities that are not Applications and are not covered by this
210 License, and convey such a combined library under terms of your
211 choice, if you do both of the following:</p>
214 <li>a) Accompany the combined library with a copy of the same work based
215 on the Library, uncombined with any other library facilities,
216 conveyed under the terms of this License.</li>
218 <li>b) Give prominent notice with the combined library that part of it
219 is a work based on the Library, and explaining where to find the
220 accompanying uncombined form of the same work.</li>
223 <h4><a name="section6"></a>6. Revised Versions of the GNU Lesser General Public License.</h4>
225 <p>The Free Software Foundation may publish revised and/or new versions
226 of the GNU Lesser General Public License from time to time. Such new
227 versions will be similar in spirit to the present version, but may
228 differ in detail to address new problems or concerns.</p>
230 <p>Each version is given a distinguishing version number. If the
231 Library as you received it specifies that a certain numbered version
232 of the GNU Lesser General Public License “or any later version”
233 applies to it, you have the option of following the terms and
234 conditions either of that published version or of any later version
235 published by the Free Software Foundation. If the Library as you
236 received it does not specify a version number of the GNU Lesser
237 General Public License, you may choose any version of the GNU Lesser
238 General Public License ever published by the Free Software Foundation.</p>
240 <p>If the Library as you received it specifies that a proxy can decide
241 whether future versions of the GNU Lesser General Public License shall
242 apply, that proxy's public statement of acceptance of any version is
243 permanent authorization for you to choose that version for the
249 <h2>GNU Readline Library and System.Console.Readline</h2>
252 <h3>GNU GENERAL PUBLIC LICENSE</h3>
253 <p>Version 3, 29 June 2007</p>
255 <p>Copyright © 2007 Free Software Foundation, Inc. <http://fsf.org/></p><p>
256 Everyone is permitted to copy and distribute verbatim copies
257 of this license document, but changing it is not allowed.</p>
259 <h3><a name="preamble"></a>Preamble</h3>
261 <p>The GNU General Public License is a free, copyleft license for
262 software and other kinds of works.</p>
264 <p>The licenses for most software and other practical works are designed
265 to take away your freedom to share and change the works. By contrast,
266 the GNU General Public License is intended to guarantee your freedom to
267 share and change all versions of a program--to make sure it remains free
268 software for all its users. We, the Free Software Foundation, use the
269 GNU General Public License for most of our software; it applies also to
270 any other work released this way by its authors. You can apply it to
271 your programs, too.</p>
273 <p>When we speak of free software, we are referring to freedom, not
274 price. Our General Public Licenses are designed to make sure that you
275 have the freedom to distribute copies of free software (and charge for
276 them if you wish), that you receive source code or can get it if you
277 want it, that you can change the software or use pieces of it in new
278 free programs, and that you know you can do these things.</p>
280 <p>To protect your rights, we need to prevent others from denying you
281 these rights or asking you to surrender the rights. Therefore, you have
282 certain responsibilities if you distribute copies of the software, or if
283 you modify it: responsibilities to respect the freedom of others.</p>
285 <p>For example, if you distribute copies of such a program, whether
286 gratis or for a fee, you must pass on to the recipients the same
287 freedoms that you received. You must make sure that they, too, receive
288 or can get the source code. And you must show them these terms so they
289 know their rights.</p>
291 <p>Developers that use the GNU GPL protect your rights with two steps:
292 (1) assert copyright on the software, and (2) offer you this License
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295 <p>For the developers' and authors' protection, the GPL clearly explains
296 that there is no warranty for this free software. For both users' and
297 authors' sake, the GPL requires that modified versions be marked as
298 changed, so that their problems will not be attributed erroneously to
299 authors of previous versions.</p>
301 <p>Some devices are designed to deny users access to install or run
302 modified versions of the software inside them, although the manufacturer
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312 <p>Finally, every program is threatened constantly by software patents.
313 States should not allow patents to restrict development and use of
314 software on general-purpose computers, but in those that do, we wish to
315 avoid the special danger that patents applied to a free program could
316 make it effectively proprietary. To prevent this, the GPL assures that
317 patents cannot be used to render the program non-free.</p>
319 <p>The precise terms and conditions for copying, distribution and
320 modification follow.</p>
322 <h3><a name="terms"></a>TERMS AND CONDITIONS</h3>
324 <h4><a name="section0"></a>0. Definitions.</h4>
326 <p>“This License” refers to version 3 of the GNU General Public License.</p>
328 <p>“Copyright” also means copyright-like laws that apply to other kinds of
329 works, such as semiconductor masks.</p>
331 <p>“The Program” refers to any copyrightable work licensed under this
332 License. Each licensee is addressed as “you”. “Licensees” and
333 “recipients” may be individuals or organizations.</p>
335 <p>To “modify” a work means to copy from or adapt all or part of the work
336 in a fashion requiring copyright permission, other than the making of an
337 exact copy. The resulting work is called a “modified version” of the
338 earlier work or a work “based on” the earlier work.</p>
340 <p>A “covered work” means either the unmodified Program or a work based
343 <p>To “propagate” a work means to do anything with it that, without
344 permission, would make you directly or secondarily liable for
345 infringement under applicable copyright law, except executing it on a
346 computer or modifying a private copy. Propagation includes copying,
347 distribution (with or without modification), making available to the
348 public, and in some countries other activities as well.</p>
350 <p>To “convey” a work means any kind of propagation that enables other
351 parties to make or receive copies. Mere interaction with a user through
352 a computer network, with no transfer of a copy, is not conveying.</p>
354 <p>An interactive user interface displays “Appropriate Legal Notices”
355 to the extent that it includes a convenient and prominently visible
356 feature that (1) displays an appropriate copyright notice, and (2)
357 tells the user that there is no warranty for the work (except to the
358 extent that warranties are provided), that licensees may convey the
359 work under this License, and how to view a copy of this License. If
360 the interface presents a list of user commands or options, such as a
361 menu, a prominent item in the list meets this criterion.</p>
363 <h4><a name="section1"></a>1. Source Code.</h4>
365 <p>The “source code” for a work means the preferred form of the work
366 for making modifications to it. “Object code” means any non-source
369 <p>A “Standard Interface” means an interface that either is an official
370 standard defined by a recognized standards body, or, in the case of
371 interfaces specified for a particular programming language, one that
372 is widely used among developers working in that language.</p>
374 <p>The “System Libraries” of an executable work include anything, other
375 than the work as a whole, that (a) is included in the normal form of
376 packaging a Major Component, but which is not part of that Major
377 Component, and (b) serves only to enable use of the work with that
378 Major Component, or to implement a Standard Interface for which an
379 implementation is available to the public in source code form. A
380 “Major Component”, in this context, means a major essential component
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383 produce the work, or an object code interpreter used to run it.</p>
385 <p>The “Corresponding Source” for a work in object code form means all
386 the source code needed to generate, install, and (for an executable
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394 linked subprograms that the work is specifically designed to require,
395 such as by intimate data communication or control flow between those
396 subprograms and other parts of the work.</p>
398 <p>The Corresponding Source need not include anything that users
399 can regenerate automatically from other parts of the Corresponding
402 <p>The Corresponding Source for a work in source code form is that
405 <h4><a name="section2"></a>2. Basic Permissions.</h4>
407 <p>All rights granted under this License are granted for the term of
408 copyright on the Program, and are irrevocable provided the stated
409 conditions are met. This License explicitly affirms your unlimited
410 permission to run the unmodified Program. The output from running a
411 covered work is covered by this License only if the output, given its
412 content, constitutes a covered work. This License acknowledges your
413 rights of fair use or other equivalent, as provided by copyright law.</p>
415 <p>You may make, run and propagate covered works that you do not
416 convey, without conditions so long as your license otherwise remains
417 in force. You may convey covered works to others for the sole purpose
418 of having them make modifications exclusively for you, or provide you
419 with facilities for running those works, provided that you comply with
420 the terms of this License in conveying all material for which you do
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422 for you must do so exclusively on your behalf, under your direction
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424 your copyrighted material outside their relationship with you.</p>
426 <p>Conveying under any other circumstances is permitted solely under
427 the conditions stated below. Sublicensing is not allowed; section 10
428 makes it unnecessary.</p>
430 <h4><a name="section3"></a>3. Protecting Users' Legal Rights From Anti-Circumvention Law.</h4>
432 <p>No covered work shall be deemed part of an effective technological
433 measure under any applicable law fulfilling obligations under article
434 11 of the WIPO copyright treaty adopted on 20 December 1996, or
435 similar laws prohibiting or restricting circumvention of such
438 <p>When you convey a covered work, you waive any legal power to forbid
439 circumvention of technological measures to the extent such circumvention
440 is effected by exercising rights under this License with respect to
441 the covered work, and you disclaim any intention to limit operation or
442 modification of the work as a means of enforcing, against the work's
443 users, your or third parties' legal rights to forbid circumvention of
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446 <h4><a name="section4"></a>4. Conveying Verbatim Copies.</h4>
448 <p>You may convey verbatim copies of the Program's source code as you
449 receive it, in any medium, provided that you conspicuously and
450 appropriately publish on each copy an appropriate copyright notice;
451 keep intact all notices stating that this License and any
452 non-permissive terms added in accord with section 7 apply to the code;
453 keep intact all notices of the absence of any warranty; and give all
454 recipients a copy of this License along with the Program.</p>
456 <p>You may charge any price or no price for each copy that you convey,
457 and you may offer support or warranty protection for a fee.</p>
459 <h4><a name="section5"></a>5. Conveying Modified Source Versions.</h4>
461 <p>You may convey a work based on the Program, or the modifications to
462 produce it from the Program, in the form of source code under the
463 terms of section 4, provided that you also meet all of these conditions:</p>
466 <li>a) The work must carry prominent notices stating that you modified
467 it, and giving a relevant date.</li>
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470 released under this License and any conditions added under section
471 7. This requirement modifies the requirement in section 4 to
472 “keep intact all notices”.</li>
474 <li>c) You must license the entire work, as a whole, under this
475 License to anyone who comes into possession of a copy. This
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478 regardless of how they are packaged. This License gives no
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480 invalidate such permission if you have separately received it.</li>
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485 work need not make them do so.</li>
488 <p>A compilation of a covered work with other separate and independent
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491 in or on a volume of a storage or distribution medium, is called an
492 “aggregate” if the compilation and its resulting copyright are not
493 used to limit the access or legal rights of the compilation's users
494 beyond what the individual works permit. Inclusion of a covered work
495 in an aggregate does not cause this License to apply to the other
496 parts of the aggregate.</p>
498 <h4><a name="section6"></a>6. Conveying Non-Source Forms.</h4>
500 <p>You may convey a covered work in object code form under the terms
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503 in one of these ways:</p>
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535 may be on a different server (operated by you or a third party)
536 that supports equivalent copying facilities, provided you maintain
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540 available for as long as needed to satisfy these requirements.</li>
542 <li>e) Convey the object code using peer-to-peer transmission, provided
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548 <p>A separable portion of the object code, whose source code is excluded
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550 included in conveying the object code work.</p>
552 <p>A “User Product” is either (1) a “consumer product”, which means any
553 tangible personal property which is normally used for personal, family,
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563 the only significant mode of use of the product.</p>
565 <p>“Installation Information” for a User Product means any methods,
566 procedures, authorization keys, or other information required to install
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571 modification has been made.</p>
573 <p>If you convey an object code work under this section in, or with, or
574 specifically for use in, a User Product, and the conveying occurs as
575 part of a transaction in which the right of possession and use of the
576 User Product is transferred to the recipient in perpetuity or for a
577 fixed term (regardless of how the transaction is characterized), the
578 Corresponding Source conveyed under this section must be accompanied
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580 if neither you nor any third party retains the ability to install
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584 <p>The requirement to provide Installation Information does not include a
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587 the User Product in which it has been modified or installed. Access to a
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592 <p>Corresponding Source conveyed, and Installation Information provided,
593 in accord with this section must be in a format that is publicly
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595 source code form), and must require no special password or key for
596 unpacking, reading or copying.</p>
598 <h4><a name="section7"></a>7. Additional Terms.</h4>
600 <p>“Additional permissions” are terms that supplement the terms of this
601 License by making exceptions from one or more of its conditions.
602 Additional permissions that are applicable to the entire Program shall
603 be treated as though they were included in this License, to the extent
604 that they are valid under applicable law. If additional permissions
605 apply only to part of the Program, that part may be used separately
606 under those permissions, but the entire Program remains governed by
607 this License without regard to the additional permissions.</p>
609 <p>When you convey a copy of a covered work, you may at your option
610 remove any additional permissions from that copy, or from any part of
611 it. (Additional permissions may be written to require their own
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613 additional permissions on material, added by you to a covered work,
614 for which you have or can give appropriate copyright permission.</p>
616 <p>Notwithstanding any other provision of this License, for material you
617 add to a covered work, you may (if authorized by the copyright holders of
618 that material) supplement the terms of this License with terms:</p>
621 <li>a) Disclaiming warranty or limiting liability differently from the
622 terms of sections 15 and 16 of this License; or</li>
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645 <p>All other non-permissive additional terms are considered “further
646 restrictions” within the meaning of section 10. If the Program as you
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661 form of a separately written license, or stated as exceptions;
662 the above requirements apply either way.</p>
664 <h4><a name="section8"></a>8. Termination.</h4>
666 <p>You may not propagate or modify a covered work except as expressly
667 provided under this License. Any attempt otherwise to propagate or
668 modify it is void, and will automatically terminate your rights under
669 this License (including any patent licenses granted under the third
670 paragraph of section 11).</p>
672 <p>However, if you cease all violation of this License, then your
673 license from a particular copyright holder is reinstated (a)
674 provisionally, unless and until the copyright holder explicitly and
675 finally terminates your license, and (b) permanently, if the copyright
676 holder fails to notify you of the violation by some reasonable means
677 prior to 60 days after the cessation.</p>
679 <p>Moreover, your license from a particular copyright holder is
680 reinstated permanently if the copyright holder notifies you of the
681 violation by some reasonable means, this is the first time you have
682 received notice of violation of this License (for any work) from that
683 copyright holder, and you cure the violation prior to 30 days after
684 your receipt of the notice.</p>
686 <p>Termination of your rights under this section does not terminate the
687 licenses of parties who have received copies or rights from you under
688 this License. If your rights have been terminated and not permanently
689 reinstated, you do not qualify to receive new licenses for the same
690 material under section 10.</p>
692 <h4><a name="section9"></a>9. Acceptance Not Required for Having Copies.</h4>
694 <p>You are not required to accept this License in order to receive or
695 run a copy of the Program. Ancillary propagation of a covered work
696 occurring solely as a consequence of using peer-to-peer transmission
697 to receive a copy likewise does not require acceptance. However,
698 nothing other than this License grants you permission to propagate or
699 modify any covered work. These actions infringe copyright if you do
700 not accept this License. Therefore, by modifying or propagating a
701 covered work, you indicate your acceptance of this License to do so.</p>
703 <h4><a name="section10"></a>10. Automatic Licensing of Downstream Recipients.</h4>
705 <p>Each time you convey a covered work, the recipient automatically
706 receives a license from the original licensors, to run, modify and
707 propagate that work, subject to this License. You are not responsible
708 for enforcing compliance by third parties with this License.</p>
710 <p>An “entity transaction” is a transaction transferring control of an
711 organization, or substantially all assets of one, or subdividing an
712 organization, or merging organizations. If propagation of a covered
713 work results from an entity transaction, each party to that
714 transaction who receives a copy of the work also receives whatever
715 licenses to the work the party's predecessor in interest had or could
716 give under the previous paragraph, plus a right to possession of the
717 Corresponding Source of the work from the predecessor in interest, if
718 the predecessor has it or can get it with reasonable efforts.</p>
720 <p>You may not impose any further restrictions on the exercise of the
721 rights granted or affirmed under this License. For example, you may
722 not impose a license fee, royalty, or other charge for exercise of
723 rights granted under this License, and you may not initiate litigation
724 (including a cross-claim or counterclaim in a lawsuit) alleging that
725 any patent claim is infringed by making, using, selling, offering for
726 sale, or importing the Program or any portion of it.</p>
728 <h4><a name="section11"></a>11. Patents.</h4>
730 <p>A “contributor” is a copyright holder who authorizes use under this
731 License of the Program or a work on which the Program is based. The
732 work thus licensed is called the contributor's “contributor version”.</p>
734 <p>A contributor's “essential patent claims” are all patent claims
735 owned or controlled by the contributor, whether already acquired or
736 hereafter acquired, that would be infringed by some manner, permitted
737 by this License, of making, using, or selling its contributor version,
738 but do not include claims that would be infringed only as a
739 consequence of further modification of the contributor version. For
740 purposes of this definition, “control” includes the right to grant
741 patent sublicenses in a manner consistent with the requirements of
744 <p>Each contributor grants you a non-exclusive, worldwide, royalty-free
745 patent license under the contributor's essential patent claims, to
746 make, use, sell, offer for sale, import and otherwise run, modify and
747 propagate the contents of its contributor version.</p>
749 <p>In the following three paragraphs, a “patent license” is any express
750 agreement or commitment, however denominated, not to enforce a patent
751 (such as an express permission to practice a patent or covenant not to
752 sue for patent infringement). To “grant” such a patent license to a
753 party means to make such an agreement or commitment not to enforce a
754 patent against the party.</p>
756 <p>If you convey a covered work, knowingly relying on a patent license,
757 and the Corresponding Source of the work is not available for anyone
758 to copy, free of charge and under the terms of this License, through a
759 publicly available network server or other readily accessible means,
760 then you must either (1) cause the Corresponding Source to be so
761 available, or (2) arrange to deprive yourself of the benefit of the
762 patent license for this particular work, or (3) arrange, in a manner
763 consistent with the requirements of this License, to extend the patent
764 license to downstream recipients. “Knowingly relying” means you have
765 actual knowledge that, but for the patent license, your conveying the
766 covered work in a country, or your recipient's use of the covered work
767 in a country, would infringe one or more identifiable patents in that
768 country that you have reason to believe are valid.</p>
770 <p>If, pursuant to or in connection with a single transaction or
771 arrangement, you convey, or propagate by procuring conveyance of, a
772 covered work, and grant a patent license to some of the parties
773 receiving the covered work authorizing them to use, propagate, modify
774 or convey a specific copy of the covered work, then the patent license
775 you grant is automatically extended to all recipients of the covered
776 work and works based on it.</p>
778 <p>A patent license is “discriminatory” if it does not include within
779 the scope of its coverage, prohibits the exercise of, or is
780 conditioned on the non-exercise of one or more of the rights that are
781 specifically granted under this License. You may not convey a covered
782 work if you are a party to an arrangement with a third party that is
783 in the business of distributing software, under which you make payment
784 to the third party based on the extent of your activity of conveying
785 the work, and under which the third party grants, to any of the
786 parties who would receive the covered work from you, a discriminatory
787 patent license (a) in connection with copies of the covered work
788 conveyed by you (or copies made from those copies), or (b) primarily
789 for and in connection with specific products or compilations that
790 contain the covered work, unless you entered into that arrangement,
791 or that patent license was granted, prior to 28 March 2007.</p>
793 <p>Nothing in this License shall be construed as excluding or limiting
794 any implied license or other defenses to infringement that may
795 otherwise be available to you under applicable patent law.</p>
797 <h4><a name="section12"></a>12. No Surrender of Others' Freedom.</h4>
799 <p>If conditions are imposed on you (whether by court order, agreement or
800 otherwise) that contradict the conditions of this License, they do not
801 excuse you from the conditions of this License. If you cannot convey a
802 covered work so as to satisfy simultaneously your obligations under this
803 License and any other pertinent obligations, then as a consequence you may
804 not convey it at all. For example, if you agree to terms that obligate you
805 to collect a royalty for further conveying from those to whom you convey
806 the Program, the only way you could satisfy both those terms and this
807 License would be to refrain entirely from conveying the Program.</p>
809 <h4><a name="section13"></a>13. Use with the GNU Affero General Public License.</h4>
811 <p>Notwithstanding any other provision of this License, you have
812 permission to link or combine any covered work with a work licensed
813 under version 3 of the GNU Affero General Public License into a single
814 combined work, and to convey the resulting work. The terms of this
815 License will continue to apply to the part which is the covered work,
816 but the special requirements of the GNU Affero General Public License,
817 section 13, concerning interaction through a network will apply to the
818 combination as such.</p>
820 <h4><a name="section14"></a>14. Revised Versions of this License.</h4>
822 <p>The Free Software Foundation may publish revised and/or new versions of
823 the GNU General Public License from time to time. Such new versions will
824 be similar in spirit to the present version, but may differ in detail to
825 address new problems or concerns.</p>
827 <p>Each version is given a distinguishing version number. If the
828 Program specifies that a certain numbered version of the GNU General
829 Public License “or any later version” applies to it, you have the
830 option of following the terms and conditions either of that numbered
831 version or of any later version published by the Free Software
832 Foundation. If the Program does not specify a version number of the
833 GNU General Public License, you may choose any version ever published
834 by the Free Software Foundation.</p>
836 <p>If the Program specifies that a proxy can decide which future
837 versions of the GNU General Public License can be used, that proxy's
838 public statement of acceptance of a version permanently authorizes you
839 to choose that version for the Program.</p>
841 <p>Later license versions may give you additional or different
842 permissions. However, no additional obligations are imposed on any
843 author or copyright holder as a result of your choosing to follow a
846 <h4><a name="section15"></a>15. Disclaimer of Warranty.</h4>
848 <p>THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
849 APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
850 HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM “AS IS” WITHOUT WARRANTY
851 OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
852 THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
853 PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
854 IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
855 ALL NECESSARY SERVICING, REPAIR OR CORRECTION.</p>
857 <h4><a name="section16"></a>16. Limitation of Liability.</h4>
859 <p>IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
860 WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
861 THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
862 GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
863 USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
864 DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
865 PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
866 EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
869 <h4><a name="section17"></a>17. Interpretation of Sections 15 and 16.</h4>
871 <p>If the disclaimer of warranty and limitation of liability provided
872 above cannot be given local legal effect according to their terms,
873 reviewing courts shall apply local law that most closely approximates
874 an absolute waiver of all civil liability in connection with the
875 Program, unless a warranty or assumption of liability accompanies a
876 copy of the Program in return for a fee.</p>
878 <p>END OF TERMS AND CONDITIONS</p>
880 <h3><a name="howto"></a>How to Apply These Terms to Your New Programs</h3>
882 <p>If you develop a new program, and you want it to be of the greatest
883 possible use to the public, the best way to achieve this is to make it
884 free software which everyone can redistribute and change under these terms.</p>
886 <p>To do so, attach the following notices to the program. It is safest
887 to attach them to the start of each source file to most effectively
888 state the exclusion of warranty; and each file should have at least
889 the “copyright” line and a pointer to where the full notice is found.</p>
891 <pre> <one line to give the program's name and a brief idea of what it does.>
892 Copyright (C) <year> <name of author>
894 This program is free software: you can redistribute it and/or modify
895 it under the terms of the GNU General Public License as published by
896 the Free Software Foundation, either version 3 of the License, or
897 (at your option) any later version.
899 This program is distributed in the hope that it will be useful,
900 but WITHOUT ANY WARRANTY; without even the implied warranty of
901 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
902 GNU General Public License for more details.
904 You should have received a copy of the GNU General Public License
905 along with this program. If not, see <http://www.gnu.org/licenses/>.
908 <p>Also add information on how to contact you by electronic and paper mail.</p>
910 <p>If the program does terminal interaction, make it output a short
911 notice like this when it starts in an interactive mode:</p>
913 <pre> <program> Copyright (C) <year> <name of author>
914 This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
915 This is free software, and you are welcome to redistribute it
916 under certain conditions; type `show c' for details.
919 <p>The hypothetical commands `show w' and `show c' should show the appropriate
920 parts of the General Public License. Of course, your program's commands
921 might be different; for a GUI interface, you would use an “about box”.</p>
923 <p>You should also get your employer (if you work as a programmer) or school,
924 if any, to sign a “copyright disclaimer” for the program, if necessary.
925 For more information on this, and how to apply and follow the GNU GPL, see
926 <http://www.gnu.org/licenses/>.</p>
928 <p>The GNU General Public License does not permit incorporating your program
929 into proprietary programs. If your program is a subroutine library, you
930 may consider it more useful to permit linking proprietary applications with
931 the library. If this is what you want to do, use the GNU Lesser General
932 Public License instead of this License. But first, please read
933 <http://www.gnu.org/philosophy/why-not-lgpl.html>.</p>
projects / ghc-hetmet.git / blob