Thomas A. Alspaugh
The GNU Lesser General Public License
Version 3, 29 June 2007
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¶0¶0ṣ1This license is a set of additional permissions added to version 3 of the GNU General Public License.

¶1¶1ṣ1Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>

¶2¶2ṣ1Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed.

¶3¶3ṣ1This version of the GNU Lesser General Public License incorporates the terms and conditions of version 3 of the GNU General Public License, supplemented by the additional permissions listed below.

0. §0Additional Definitions.

§0¶1§0¶1ṣ1As used herein, this License refers to version 3 of the GNU Lesser General Public License, and the GNU GPL refers to version 3 of the GNU General Public License.

§0¶2§0¶2ṣ1The Library refers to a covered work governed by this License, other than an Application or a Combined Work as defined below.

§0¶3§0¶3ṣ1An Application is any work that makes use of an interface provided by the Library, but which is not otherwise based on the Library. §0¶3ṣ2Defining a subclass of a class defined by the Library is deemed a mode of using an interface provided by the Library.

§0¶4§0¶4ṣ1A Combined Work is a work produced by combining or linking an Application with the Library. §0¶4ṣ2The particular version of the Library with which the Combined Work was made is also called the Linked Version.

§0¶5§0¶5ṣ1The Minimal Corresponding Source for a Combined Work means the Corresponding Source for the Combined Work, excluding any source code for portions of the Combined Work that, considered in isolation, are based on the Application, and not on the Linked Version.

§0¶6§0¶6ṣ1The Corresponding Application Code for a Combined Work means the object code and/or source code for the Application, including any data and utility programs needed for reproducing the Combined Work from the Application, but excluding the System Libraries of the Combined Work.

1. §1Exception to Section 3 of the GNU GPL.

§1¶1§1¶1ṣ1You may convey a covered work under sections 3 and 4 of this License without being bound by section 3 of the GNU GPL.

2. §2Conveying Modified Versions.

§2¶1§2¶1ṣ1If you modify a copy of the Library, and, in your modifications, a facility refers to a function or data to be supplied by an Application that uses the facility (other than as an argument passed when the facility is invoked), then you may convey a copy of the modified version:

  1. a) ṣ1.aunder this License, provided that you make a good faith effort to ensure that, in the event an Application does not supply the function or data, the facility still operates, and performs whatever part of its purpose remains meaningful, or
  2. b) ṣ1.bunder the GNU GPL, with none of the additional permissions of this License applicable to that copy.

3. §3Object Code Incorporating Material from Library Header Files.

§3¶1§3¶1ṣ1The object code form of an Application may incorporate material from a header file that is part of the Library. §3¶1ṣ2You may convey such object code under terms of your choice, provided that, if the incorporated material is not limited to numerical parameters, data structure layouts and accessors, or small macros, inline functions and templates (ten or fewer lines in length), you do both of the following:

  1. a) §3¶1.a§3¶1.aṣ1Give prominent notice with each copy of the object code that the Library is used in it and that the Library and its use are covered by this License.
  2. b) §3¶1.b§3¶1.bṣ1Accompany the object code with a copy of the GNU GPL and this license document.

4. §4Combined Works.

§4¶1§4¶1ṣ1You may convey a Combined Work under terms of your choice that, taken together, effectively do not restrict modification of the portions of the Library contained in the Combined Work and reverse engineering for debugging such modifications, if you also do each of the following:

  1. a) §4¶1.a§4¶1.aṣ1Give prominent notice with each copy of the Combined Work that the Library is used in it and that the Library and its use are covered by this License.
  2. b) §4¶1.b§4¶1.bṣ1Accompany the Combined Work with a copy of the GNU GPL and this license document.
  3. c) §4¶1.c§4¶1.cṣ1For a Combined Work that displays copyright notices during execution, include the copyright notice for the Library among these notices, as well as a reference directing the user to the copies of the GNU GPL and this license document.
  4. d) §4¶1.d§4¶1.dṣ1Do one of the following:
    1. 0) §4¶1.d.0§4¶1.d.0ṣ1Convey the Minimal Corresponding Source under the terms of this License, and the Corresponding Application Code in a form suitable for, and under terms that permit, the user to recombine or relink the Application with a modified version of the Linked Version to produce a modified Combined Work, in the manner specified by section 6 of the GNU GPL for conveying Corresponding Source.
    2. 1) §4¶1.d.1§4¶1.d.1ṣ1Use a suitable shared library mechanism for linking with the Library. §4¶1.d.1ṣ2A suitable mechanism is one that
      1. (a) ṣ2.auses at run time a copy of the Library already present on the user's computer system, and
      2. (b) ṣ2.bwill operate properly with a modified version of the Library that is interface-compatible with the Linked Version.
  5. e) §4¶1.e§4¶1.eṣ1Provide Installation Information, but only if you would otherwise be required to provide such information under section 6 of the GNU GPL, and only to the extent that such information is necessary to install and execute a modified version of the Combined Work produced by recombining or relinking the Application with a modified version of the Linked Version. §4¶1.eṣ2(If you use option 4d0, the Installation Information must accompany the Minimal Corresponding Source and Corresponding Application Code. §4¶1.eṣ3If you use option 4d1, you must provide the Installation Information in the manner specified by section 6 of the GNU GPL for conveying Corresponding Source.)

5. §5Combined Libraries.

§5¶1§5¶1ṣ1You may place library facilities that are a work based on the Library side by side in a single library together with other library facilities that are not Applications and are not covered by this License, and convey such a combined library under terms of your choice, if you do both of the following:

  1. a) §5¶1.a§5¶1.aṣ1Accompany the combined library with a copy of the same work based on the Library, uncombined with any other library facilities, conveyed under the terms of this License.
  2. b) §5¶1.b§5¶1.bṣ1Give prominent notice with the combined library that part of it is a work based on the Library, and explaining where to find the accompanying uncombined form of the same work.

6. §6Revised Versions of the GNU Lesser General Public License.

§6¶1§6¶1ṣ1The Free Software Foundation may publish revised and/or new versions of the GNU Lesser General Public License from time to time. §6¶1ṣ2Such new versions will be similar in spirit to the present version, but may differ in detail to address new problems or concerns.

§6¶2§6¶2ṣ1Each version is given a distinguishing version number. §6¶2ṣ2If the Library as you received it specifies that a certain numbered version of the GNU Lesser General Public License or any later version applies to it, you have the option of following the terms and conditions either of that published version or of any later version published by the Free Software Foundation. §6¶2ṣ3If the Library as you received it does not specify a version number of the GNU Lesser General Public License, you may choose any version of the GNU Lesser General Public License ever published by the Free Software Foundation.

§6¶3§6¶3ṣ1If the Library as you received it specifies that a proxy can decide whether future versions of the GNU Lesser General Public License shall apply, that proxy's public statement of acceptance of any version is permanent authorization for you to choose that version for the Library.

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