| 
							
								 | 
							
									  GNU LESSER GENERAL PUBLIC LICENSE
 | 
						
						
						
						
							 | 
							
								 | 
							
									       Version 2.1, February 1999
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							 Copyright (C) 1991, 1999 Free Software Foundation, Inc.
 | 
						
						
						
						
							 | 
							
								 | 
							
							 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 | 
						
						
						
						
							 | 
							
								 | 
							
							 Everyone is permitted to copy and distribute verbatim copies
 | 
						
						
						
						
							 | 
							
								 | 
							
							 of this license document, but changing it is not allowed.
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							[This is the first released version of the Lesser GPL.  It also counts
 | 
						
						
						
						
							 | 
							
								 | 
							
							 as the successor of the GNU Library Public License, version 2, hence
 | 
						
						
						
						
							 | 
							
								 | 
							
							 the version number 2.1.]
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
										    Preamble
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							  The licenses for most software are designed to take away your
 | 
						
						
						
						
							 | 
							
								 | 
							
							freedom to share and change it.  By contrast, the GNU General Public
 | 
						
						
						
						
							 | 
							
								 | 
							
							Licenses are intended to guarantee your freedom to share and change
 | 
						
						
						
						
							 | 
							
								 | 
							
							free software--to make sure the software is free for all its users.
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							  This license, the Lesser General Public License, applies to some
 | 
						
						
						
						
							 | 
							
								 | 
							
							specially designated software packages--typically libraries--of the
 | 
						
						
						
						
							 | 
							
								 | 
							
							Free Software Foundation and other authors who decide to use it.  You
 | 
						
						
						
						
							 | 
							
								 | 
							
							can use it too, but we suggest you first think carefully about whether
 | 
						
						
						
						
							 | 
							
								 | 
							
							this license or the ordinary General Public License is the better
 | 
						
						
						
						
							 | 
							
								 | 
							
							strategy to use in any particular case, based on the explanations below.
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							  When we speak of free software, we are referring to freedom of use,
 | 
						
						
						
						
							 | 
							
								 | 
							
							not price.  Our General Public Licenses are designed to make sure that
 | 
						
						
						
						
							 | 
							
								 | 
							
							you have the freedom to distribute copies of free software (and charge
 | 
						
						
						
						
							 | 
							
								 | 
							
							for this service if you wish); that you receive source code or can get
 | 
						
						
						
						
							 | 
							
								 | 
							
							it if you want it; that you can change the software and use pieces of
 | 
						
						
						
						
							 | 
							
								 | 
							
							it in new free programs; and that you are informed that you can do
 | 
						
						
						
						
							 | 
							
								 | 
							
							these things.
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							  To protect your rights, we need to make restrictions that forbid
 | 
						
						
						
						
							 | 
							
								 | 
							
							distributors to deny you these rights or to ask you to surrender these
 | 
						
						
						
						
							 | 
							
								 | 
							
							rights.  These restrictions translate to certain responsibilities for
 | 
						
						
						
						
							 | 
							
								 | 
							
							you if you distribute copies of the library or if you modify it.
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							  For example, if you distribute copies of the library, whether gratis
 | 
						
						
						
						
							 | 
							
								 | 
							
							or for a fee, you must give the recipients all the rights that we gave
 | 
						
						
						
						
							 | 
							
								 | 
							
							you.  You must make sure that they, too, receive or can get the source
 | 
						
						
						
						
							 | 
							
								 | 
							
							code.  If you link other code with the library, you must provide
 | 
						
						
						
						
							 | 
							
								 | 
							
							complete object files to the recipients, so that they can relink them
 | 
						
						
						
						
							 | 
							
								 | 
							
							with the library after making changes to the library and recompiling
 | 
						
						
						
						
							 | 
							
								 | 
							
							it.  And you must show them these terms so they know their rights.
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							  We protect your rights with a two-step method: (1) we copyright the
 | 
						
						
						
						
							 | 
							
								 | 
							
							library, and (2) we offer you this license, which gives you legal
 | 
						
						
						
						
							 | 
							
								 | 
							
							permission to copy, distribute and/or modify the library.
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							  To protect each distributor, we want to make it very clear that
 | 
						
						
						
						
							 | 
							
								 | 
							
							there is no warranty for the free library.  Also, if the library is
 | 
						
						
						
						
							 | 
							
								 | 
							
							modified by someone else and passed on, the recipients should know
 | 
						
						
						
						
							 | 
							
								 | 
							
							that what they have is not the original version, so that the original
 | 
						
						
						
						
							 | 
							
								 | 
							
							author's reputation will not be affected by problems that might be
 | 
						
						
						
						
							 | 
							
								 | 
							
							introduced by others.
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							  Finally, software patents pose a constant threat to the existence of
 | 
						
						
						
						
							 | 
							
								 | 
							
							any free program.  We wish to make sure that a company cannot
 | 
						
						
						
						
							 | 
							
								 | 
							
							effectively restrict the users of a free program by obtaining a
 | 
						
						
						
						
							 | 
							
								 | 
							
							restrictive license from a patent holder.  Therefore, we insist that
 | 
						
						
						
						
							 | 
							
								 | 
							
							any patent license obtained for a version of the library must be
 | 
						
						
						
						
							 | 
							
								 | 
							
							consistent with the full freedom of use specified in this license.
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							  Most GNU software, including some libraries, is covered by the
 | 
						
						
						
						
							 | 
							
								 | 
							
							ordinary GNU General Public License.  This license, the GNU Lesser
 | 
						
						
						
						
							 | 
							
								 | 
							
							General Public License, applies to certain designated libraries, and
 | 
						
						
						
						
							 | 
							
								 | 
							
							is quite different from the ordinary General Public License.  We use
 | 
						
						
						
						
							 | 
							
								 | 
							
							this license for certain libraries in order to permit linking those
 | 
						
						
						
						
							 | 
							
								 | 
							
							libraries into non-free programs.
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							  When a program is linked with a library, whether statically or using
 | 
						
						
						
						
							 | 
							
								 | 
							
							a shared library, the combination of the two is legally speaking a
 | 
						
						
						
						
							 | 
							
								 | 
							
							combined work, a derivative of the original library.  The ordinary
 | 
						
						
						
						
							 | 
							
								 | 
							
							General Public License therefore permits such linking only if the
 | 
						
						
						
						
							 | 
							
								 | 
							
							entire combination fits its criteria of freedom.  The Lesser General
 | 
						
						
						
						
							 | 
							
								 | 
							
							Public License permits more lax criteria for linking other code with
 | 
						
						
						
						
							 | 
							
								 | 
							
							the library.
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							  We call this license the "Lesser" General Public License because it
 | 
						
						
						
						
							 | 
							
								 | 
							
							does Less to protect the user's freedom than the ordinary General
 | 
						
						
						
						
							 | 
							
								 | 
							
							Public License.  It also provides other free software developers Less
 | 
						
						
						
						
							 | 
							
								 | 
							
							of an advantage over competing non-free programs.  These disadvantages
 | 
						
						
						
						
							 | 
							
								 | 
							
							are the reason we use the ordinary General Public License for many
 | 
						
						
						
						
							 | 
							
								 | 
							
							libraries.  However, the Lesser license provides advantages in certain
 | 
						
						
						
						
							 | 
							
								 | 
							
							special circumstances.
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							  For example, on rare occasions, there may be a special need to
 | 
						
						
						
						
							 | 
							
								 | 
							
							encourage the widest possible use of a certain library, so that it becomes
 | 
						
						
						
						
							 | 
							
								 | 
							
							a de-facto standard.  To achieve this, non-free programs must be
 | 
						
						
						
						
							 | 
							
								 | 
							
							allowed to use the library.  A more frequent case is that a free
 | 
						
						
						
						
							 | 
							
								 | 
							
							library does the same job as widely used non-free libraries.  In this
 | 
						
						
						
						
							 | 
							
								 | 
							
							case, there is little to gain by limiting the free library to free
 | 
						
						
						
						
							 | 
							
								 | 
							
							software only, so we use the Lesser General Public License.
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							  In other cases, permission to use a particular library in non-free
 | 
						
						
						
						
							 | 
							
								 | 
							
							programs enables a greater number of people to use a large body of
 | 
						
						
						
						
							 | 
							
								 | 
							
							free software.  For example, permission to use the GNU C Library in
 | 
						
						
						
						
							 | 
							
								 | 
							
							non-free programs enables many more people to use the whole GNU
 | 
						
						
						
						
							 | 
							
								 | 
							
							operating system, as well as its variant, the GNU/Linux operating
 | 
						
						
						
						
							 | 
							
								 | 
							
							system.
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							  Although the Lesser General Public License is Less protective of the
 | 
						
						
						
						
							 | 
							
								 | 
							
							users' freedom, it does ensure that the user of a program that is
 | 
						
						
						
						
							 | 
							
								 | 
							
							linked with the Library has the freedom and the wherewithal to run
 | 
						
						
						
						
							 | 
							
								 | 
							
							that program using a modified version of the Library.
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							  The precise terms and conditions for copying, distribution and
 | 
						
						
						
						
							 | 
							
								 | 
							
							modification follow.  Pay close attention to the difference between a
 | 
						
						
						
						
							 | 
							
								 | 
							
							"work based on the library" and a "work that uses the library".  The
 | 
						
						
						
						
							 | 
							
								 | 
							
							former contains code derived from the library, whereas the latter must
 | 
						
						
						
						
							 | 
							
								 | 
							
							be combined with the library in order to run.
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
									  GNU LESSER GENERAL PUBLIC LICENSE
 | 
						
						
						
						
							 | 
							
								 | 
							
							   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							  0. This License Agreement applies to any software library or other
 | 
						
						
						
						
							 | 
							
								 | 
							
							program which contains a notice placed by the copyright holder or
 | 
						
						
						
						
							 | 
							
								 | 
							
							other authorized party saying it may be distributed under the terms of
 | 
						
						
						
						
							 | 
							
								 | 
							
							this Lesser General Public License (also called "this License").
 | 
						
						
						
						
							 | 
							
								 | 
							
							Each licensee is addressed as "you".
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							  A "library" means a collection of software functions and/or data
 | 
						
						
						
						
							 | 
							
								 | 
							
							prepared so as to be conveniently linked with application programs
 | 
						
						
						
						
							 | 
							
								 | 
							
							(which use some of those functions and data) to form executables.
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							  The "Library", below, refers to any such software library or work
 | 
						
						
						
						
							 | 
							
								 | 
							
							which has been distributed under these terms.  A "work based on the
 | 
						
						
						
						
							 | 
							
								 | 
							
							Library" means either the Library or any derivative work under
 | 
						
						
						
						
							 | 
							
								 | 
							
							copyright law: that is to say, a work containing the Library or a
 | 
						
						
						
						
							 | 
							
								 | 
							
							portion of it, either verbatim or with modifications and/or translated
 | 
						
						
						
						
							 | 
							
								 | 
							
							straightforwardly into another language.  (Hereinafter, translation is
 | 
						
						
						
						
							 | 
							
								 | 
							
							included without limitation in the term "modification".)
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							  "Source code" for a work means the preferred form of the work for
 | 
						
						
						
						
							 | 
							
								 | 
							
							making modifications to it.  For a library, complete source code means
 | 
						
						
						
						
							 | 
							
								 | 
							
							all the source code for all modules it contains, plus any associated
 | 
						
						
						
						
							 | 
							
								 | 
							
							interface definition files, plus the scripts used to control compilation
 | 
						
						
						
						
							 | 
							
								 | 
							
							and installation of the library.
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							  Activities other than copying, distribution and modification are not
 | 
						
						
						
						
							 | 
							
								 | 
							
							covered by this License; they are outside its scope.  The act of
 | 
						
						
						
						
							 | 
							
								 | 
							
							running a program using the Library is not restricted, and output from
 | 
						
						
						
						
							 | 
							
								 | 
							
							such a program is covered only if its contents constitute a work based
 | 
						
						
						
						
							 | 
							
								 | 
							
							on the Library (independent of the use of the Library in a tool for
 | 
						
						
						
						
							 | 
							
								 | 
							
							writing it).  Whether that is true depends on what the Library does
 | 
						
						
						
						
							 | 
							
								 | 
							
							and what the program that uses the Library does.
 | 
						
						
						
						
							 | 
							
								 | 
							
							  
 | 
						
						
						
						
							 | 
							
								 | 
							
							  1. You may copy and distribute verbatim copies of the Library's
 | 
						
						
						
						
							 | 
							
								 | 
							
							complete source code as you receive it, in any medium, provided that
 | 
						
						
						
						
							 | 
							
								 | 
							
							you conspicuously and appropriately publish on each copy an
 | 
						
						
						
						
							 | 
							
								 | 
							
							appropriate copyright notice and disclaimer of warranty; keep intact
 | 
						
						
						
						
							 | 
							
								 | 
							
							all the notices that refer to this License and to the absence of any
 | 
						
						
						
						
							 | 
							
								 | 
							
							warranty; and distribute a copy of this License along with the
 | 
						
						
						
						
							 | 
							
								 | 
							
							Library.
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							  You may charge a fee for the physical act of transferring a copy,
 | 
						
						
						
						
							 | 
							
								 | 
							
							and you may at your option offer warranty protection in exchange for a
 | 
						
						
						
						
							 | 
							
								 | 
							
							fee.
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							  2. You may modify your copy or copies of the Library or any portion
 | 
						
						
						
						
							 | 
							
								 | 
							
							of it, thus forming a work based on the Library, and copy and
 | 
						
						
						
						
							 | 
							
								 | 
							
							distribute such modifications or work under the terms of Section 1
 | 
						
						
						
						
							 | 
							
								 | 
							
							above, provided that you also meet all of these conditions:
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							    a) The modified work must itself be a software library.
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							    b) You must cause the files modified to carry prominent notices
 | 
						
						
						
						
							 | 
							
								 | 
							
							    stating that you changed the files and the date of any change.
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							    c) You must cause the whole of the work to be licensed at no
 | 
						
						
						
						
							 | 
							
								 | 
							
							    charge to all third parties under the terms of this License.
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							    d) If a facility in the modified Library refers to a function or a
 | 
						
						
						
						
							 | 
							
								 | 
							
							    table of data to be supplied by an application program that uses
 | 
						
						
						
						
							 | 
							
								 | 
							
							    the facility, other than as an argument passed when the facility
 | 
						
						
						
						
							 | 
							
								 | 
							
							    is invoked, then you must make a good faith effort to ensure that,
 | 
						
						
						
						
							 | 
							
								 | 
							
							    in the event an application does not supply such function or
 | 
						
						
						
						
							 | 
							
								 | 
							
							    table, the facility still operates, and performs whatever part of
 | 
						
						
						
						
							 | 
							
								 | 
							
							    its purpose remains meaningful.
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							    (For example, a function in a library to compute square roots has
 | 
						
						
						
						
							 | 
							
								 | 
							
							    a purpose that is entirely well-defined independent of the
 | 
						
						
						
						
							 | 
							
								 | 
							
							    application.  Therefore, Subsection 2d requires that any
 | 
						
						
						
						
							 | 
							
								 | 
							
							    application-supplied function or table used by this function must
 | 
						
						
						
						
							 | 
							
								 | 
							
							    be optional: if the application does not supply it, the square
 | 
						
						
						
						
							 | 
							
								 | 
							
							    root function must still compute square roots.)
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							These requirements apply to the modified work as a whole.  If
 | 
						
						
						
						
							 | 
							
								 | 
							
							identifiable sections of that work are not derived from the Library,
 | 
						
						
						
						
							 | 
							
								 | 
							
							and can be reasonably considered independent and separate works in
 | 
						
						
						
						
							 | 
							
								 | 
							
							themselves, then this License, and its terms, do not apply to those
 | 
						
						
						
						
							 | 
							
								 | 
							
							sections when you distribute them as separate works.  But when you
 | 
						
						
						
						
							 | 
							
								 | 
							
							distribute the same sections as part of a whole which is a work based
 | 
						
						
						
						
							 | 
							
								 | 
							
							on the Library, the distribution of the whole must be on the terms of
 | 
						
						
						
						
							 | 
							
								 | 
							
							this License, whose permissions for other licensees extend to the
 | 
						
						
						
						
							 | 
							
								 | 
							
							entire whole, and thus to each and every part regardless of who wrote
 | 
						
						
						
						
							 | 
							
								 | 
							
							it.
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							Thus, it is not the intent of this section to claim rights or contest
 | 
						
						
						
						
							 | 
							
								 | 
							
							your rights to work written entirely by you; rather, the intent is to
 | 
						
						
						
						
							 | 
							
								 | 
							
							exercise the right to control the distribution of derivative or
 | 
						
						
						
						
							 | 
							
								 | 
							
							collective works based on the Library.
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							In addition, mere aggregation of another work not based on the Library
 | 
						
						
						
						
							 | 
							
								 | 
							
							with the Library (or with a work based on the Library) on a volume of
 | 
						
						
						
						
							 | 
							
								 | 
							
							a storage or distribution medium does not bring the other work under
 | 
						
						
						
						
							 | 
							
								 | 
							
							the scope of this License.
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							  3. You may opt to apply the terms of the ordinary GNU General Public
 | 
						
						
						
						
							 | 
							
								 | 
							
							License instead of this License to a given copy of the Library.  To do
 | 
						
						
						
						
							 | 
							
								 | 
							
							this, you must alter all the notices that refer to this License, so
 | 
						
						
						
						
							 | 
							
								 | 
							
							that they refer to the ordinary GNU General Public License, version 2,
 | 
						
						
						
						
							 | 
							
								 | 
							
							instead of to this License.  (If a newer version than version 2 of the
 | 
						
						
						
						
							 | 
							
								 | 
							
							ordinary GNU General Public License has appeared, then you can specify
 | 
						
						
						
						
							 | 
							
								 | 
							
							that version instead if you wish.)  Do not make any other change in
 | 
						
						
						
						
							 | 
							
								 | 
							
							these notices.
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							  Once this change is made in a given copy, it is irreversible for
 | 
						
						
						
						
							 | 
							
								 | 
							
							that copy, so the ordinary GNU General Public License applies to all
 | 
						
						
						
						
							 | 
							
								 | 
							
							subsequent copies and derivative works made from that copy.
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							  This option is useful when you wish to copy part of the code of
 | 
						
						
						
						
							 | 
							
								 | 
							
							the Library into a program that is not a library.
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							  4. You may copy and distribute the Library (or a portion or
 | 
						
						
						
						
							 | 
							
								 | 
							
							derivative of it, under Section 2) in object code or executable form
 | 
						
						
						
						
							 | 
							
								 | 
							
							under the terms of Sections 1 and 2 above provided that you accompany
 | 
						
						
						
						
							 | 
							
								 | 
							
							it with the complete corresponding machine-readable source code, which
 | 
						
						
						
						
							 | 
							
								 | 
							
							must be distributed under the terms of Sections 1 and 2 above on a
 | 
						
						
						
						
							 | 
							
								 | 
							
							medium customarily used for software interchange.
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							  If distribution of object code is made by offering access to copy
 | 
						
						
						
						
							 | 
							
								 | 
							
							from a designated place, then offering equivalent access to copy the
 | 
						
						
						
						
							 | 
							
								 | 
							
							source code from the same place satisfies the requirement to
 | 
						
						
						
						
							 | 
							
								 | 
							
							distribute the source code, even though third parties are not
 | 
						
						
						
						
							 | 
							
								 | 
							
							compelled to copy the source along with the object code.
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							  5. A program that contains no derivative of any portion of the
 | 
						
						
						
						
							 | 
							
								 | 
							
							Library, but is designed to work with the Library by being compiled or
 | 
						
						
						
						
							 | 
							
								 | 
							
							linked with it, is called a "work that uses the Library".  Such a
 | 
						
						
						
						
							 | 
							
								 | 
							
							work, in isolation, is not a derivative work of the Library, and
 | 
						
						
						
						
							 | 
							
								 | 
							
							therefore falls outside the scope of this License.
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							  However, linking a "work that uses the Library" with the Library
 | 
						
						
						
						
							 | 
							
								 | 
							
							creates an executable that is a derivative of the Library (because it
 | 
						
						
						
						
							 | 
							
								 | 
							
							contains portions of the Library), rather than a "work that uses the
 | 
						
						
						
						
							 | 
							
								 | 
							
							library".  The executable is therefore covered by this License.
 | 
						
						
						
						
							 | 
							
								 | 
							
							Section 6 states terms for distribution of such executables.
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							  When a "work that uses the Library" uses material from a header file
 | 
						
						
						
						
							 | 
							
								 | 
							
							that is part of the Library, the object code for the work may be a
 | 
						
						
						
						
							 | 
							
								 | 
							
							derivative work of the Library even though the source code is not.
 | 
						
						
						
						
							 | 
							
								 | 
							
							Whether this is true is especially significant if the work can be
 | 
						
						
						
						
							 | 
							
								 | 
							
							linked without the Library, or if the work is itself a library.  The
 | 
						
						
						
						
							 | 
							
								 | 
							
							threshold for this to be true is not precisely defined by law.
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							  If such an object file uses only numerical parameters, data
 | 
						
						
						
						
							 | 
							
								 | 
							
							structure layouts and accessors, and small macros and small inline
 | 
						
						
						
						
							 | 
							
								 | 
							
							functions (ten lines or less in length), then the use of the object
 | 
						
						
						
						
							 | 
							
								 | 
							
							file is unrestricted, regardless of whether it is legally a derivative
 | 
						
						
						
						
							 | 
							
								 | 
							
							work.  (Executables containing this object code plus portions of the
 | 
						
						
						
						
							 | 
							
								 | 
							
							Library will still fall under Section 6.)
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							  Otherwise, if the work is a derivative of the Library, you may
 | 
						
						
						
						
							 | 
							
								 | 
							
							distribute the object code for the work under the terms of Section 6.
 | 
						
						
						
						
							 | 
							
								 | 
							
							Any executables containing that work also fall under Section 6,
 | 
						
						
						
						
							 | 
							
								 | 
							
							whether or not they are linked directly with the Library itself.
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							  6. As an exception to the Sections above, you may also combine or
 | 
						
						
						
						
							 | 
							
								 | 
							
							link a "work that uses the Library" with the Library to produce a
 | 
						
						
						
						
							 | 
							
								 | 
							
							work containing portions of the Library, and distribute that work
 | 
						
						
						
						
							 | 
							
								 | 
							
							under terms of your choice, provided that the terms permit
 | 
						
						
						
						
							 | 
							
								 | 
							
							modification of the work for the customer's own use and reverse
 | 
						
						
						
						
							 | 
							
								 | 
							
							engineering for debugging such modifications.
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							  You must give prominent notice with each copy of the work that the
 | 
						
						
						
						
							 | 
							
								 | 
							
							Library is used in it and that the Library and its use are covered by
 | 
						
						
						
						
							 | 
							
								 | 
							
							this License.  You must supply a copy of this License.  If the work
 | 
						
						
						
						
							 | 
							
								 | 
							
							during execution displays copyright notices, you must include the
 | 
						
						
						
						
							 | 
							
								 | 
							
							copyright notice for the Library among them, as well as a reference
 | 
						
						
						
						
							 | 
							
								 | 
							
							directing the user to the copy of this License.  Also, you must do one
 | 
						
						
						
						
							 | 
							
								 | 
							
							of these things:
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							    a) Accompany the work with the complete corresponding
 | 
						
						
						
						
							 | 
							
								 | 
							
							    machine-readable source code for the Library including whatever
 | 
						
						
						
						
							 | 
							
								 | 
							
							    changes were used in the work (which must be distributed under
 | 
						
						
						
						
							 | 
							
								 | 
							
							    Sections 1 and 2 above); and, if the work is an executable linked
 | 
						
						
						
						
							 | 
							
								 | 
							
							    with the Library, with the complete machine-readable "work that
 | 
						
						
						
						
							 | 
							
								 | 
							
							    uses the Library", as object code and/or source code, so that the
 | 
						
						
						
						
							 | 
							
								 | 
							
							    user can modify the Library and then relink to produce a modified
 | 
						
						
						
						
							 | 
							
								 | 
							
							    executable containing the modified Library.  (It is understood
 | 
						
						
						
						
							 | 
							
								 | 
							
							    that the user who changes the contents of definitions files in the
 | 
						
						
						
						
							 | 
							
								 | 
							
							    Library will not necessarily be able to recompile the application
 | 
						
						
						
						
							 | 
							
								 | 
							
							    to use the modified definitions.)
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							    b) Use a suitable shared library mechanism for linking with the
 | 
						
						
						
						
							 | 
							
								 | 
							
							    Library.  A suitable mechanism is one that (1) uses at run time a
 | 
						
						
						
						
							 | 
							
								 | 
							
							    copy of the library already present on the user's computer system,
 | 
						
						
						
						
							 | 
							
								 | 
							
							    rather than copying library functions into the executable, and (2)
 | 
						
						
						
						
							 | 
							
								 | 
							
							    will operate properly with a modified version of the library, if
 | 
						
						
						
						
							 | 
							
								 | 
							
							    the user installs one, as long as the modified version is
 | 
						
						
						
						
							 | 
							
								 | 
							
							    interface-compatible with the version that the work was made with.
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							    c) Accompany the work with a written offer, valid for at
 | 
						
						
						
						
							 | 
							
								 | 
							
							    least three years, to give the same user the materials
 | 
						
						
						
						
							 | 
							
								 | 
							
							    specified in Subsection 6a, above, for a charge no more
 | 
						
						
						
						
							 | 
							
								 | 
							
							    than the cost of performing this distribution.
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							    d) If distribution of the work is made by offering access to copy
 | 
						
						
						
						
							 | 
							
								 | 
							
							    from a designated place, offer equivalent access to copy the above
 | 
						
						
						
						
							 | 
							
								 | 
							
							    specified materials from the same place.
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							    e) Verify that the user has already received a copy of these
 | 
						
						
						
						
							 | 
							
								 | 
							
							    materials or that you have already sent this user a copy.
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							  For an executable, the required form of the "work that uses the
 | 
						
						
						
						
							 | 
							
								 | 
							
							Library" must include any data and utility programs needed for
 | 
						
						
						
						
							 | 
							
								 | 
							
							reproducing the executable from it.  However, as a special exception,
 | 
						
						
						
						
							 | 
							
								 | 
							
							the materials to be distributed need not include anything that is
 | 
						
						
						
						
							 | 
							
								 | 
							
							normally distributed (in either source or binary form) with the major
 | 
						
						
						
						
							 | 
							
								 | 
							
							components (compiler, kernel, and so on) of the operating system on
 | 
						
						
						
						
							 | 
							
								 | 
							
							which the executable runs, unless that component itself accompanies
 | 
						
						
						
						
							 | 
							
								 | 
							
							the executable.
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							  It may happen that this requirement contradicts the license
 | 
						
						
						
						
							 | 
							
								 | 
							
							restrictions of other proprietary libraries that do not normally
 | 
						
						
						
						
							 | 
							
								 | 
							
							accompany the operating system.  Such a contradiction means you cannot
 | 
						
						
						
						
							 | 
							
								 | 
							
							use both them and the Library together in an executable that you
 | 
						
						
						
						
							 | 
							
								 | 
							
							distribute.
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							  7. You may place library facilities that are a work based on the
 | 
						
						
						
						
							 | 
							
								 | 
							
							Library side-by-side in a single library together with other library
 | 
						
						
						
						
							 | 
							
								 | 
							
							facilities not covered by this License, and distribute such a combined
 | 
						
						
						
						
							 | 
							
								 | 
							
							library, provided that the separate distribution of the work based on
 | 
						
						
						
						
							 | 
							
								 | 
							
							the Library and of the other library facilities is otherwise
 | 
						
						
						
						
							 | 
							
								 | 
							
							permitted, and provided that you do these two things:
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							    a) Accompany the combined library with a copy of the same work
 | 
						
						
						
						
							 | 
							
								 | 
							
							    based on the Library, uncombined with any other library
 | 
						
						
						
						
							 | 
							
								 | 
							
							    facilities.  This must be distributed under the terms of the
 | 
						
						
						
						
							 | 
							
								 | 
							
							    Sections above.
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							    b) Give prominent notice with the combined library of the fact
 | 
						
						
						
						
							 | 
							
								 | 
							
							    that part of it is a work based on the Library, and explaining
 | 
						
						
						
						
							 | 
							
								 | 
							
							    where to find the accompanying uncombined form of the same work.
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							  8. You may not copy, modify, sublicense, link with, or distribute
 | 
						
						
						
						
							 | 
							
								 | 
							
							the Library except as expressly provided under this License.  Any
 | 
						
						
						
						
							 | 
							
								 | 
							
							attempt otherwise to copy, modify, sublicense, link with, or
 | 
						
						
						
						
							 | 
							
								 | 
							
							distribute the Library is void, and will automatically terminate your
 | 
						
						
						
						
							 | 
							
								 | 
							
							rights under this License.  However, parties who have received copies,
 | 
						
						
						
						
							 | 
							
								 | 
							
							or rights, from you under this License will not have their licenses
 | 
						
						
						
						
							 | 
							
								 | 
							
							terminated so long as such parties remain in full compliance.
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							  9. You are not required to accept this License, since you have not
 | 
						
						
						
						
							 | 
							
								 | 
							
							signed it.  However, nothing else grants you permission to modify or
 | 
						
						
						
						
							 | 
							
								 | 
							
							distribute the Library or its derivative works.  These actions are
 | 
						
						
						
						
							 | 
							
								 | 
							
							prohibited by law if you do not accept this License.  Therefore, by
 | 
						
						
						
						
							 | 
							
								 | 
							
							modifying or distributing the Library (or any work based on the
 | 
						
						
						
						
							 | 
							
								 | 
							
							Library), you indicate your acceptance of this License to do so, and
 | 
						
						
						
						
							 | 
							
								 | 
							
							all its terms and conditions for copying, distributing or modifying
 | 
						
						
						
						
							 | 
							
								 | 
							
							the Library or works based on it.
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							  10. Each time you redistribute the Library (or any work based on the
 | 
						
						
						
						
							 | 
							
								 | 
							
							Library), the recipient automatically receives a license from the
 | 
						
						
						
						
							 | 
							
								 | 
							
							original licensor to copy, distribute, link with or modify the Library
 | 
						
						
						
						
							 | 
							
								 | 
							
							subject to these terms and conditions.  You may not impose any further
 | 
						
						
						
						
							 | 
							
								 | 
							
							restrictions on the recipients' exercise of the rights granted herein.
 | 
						
						
						
						
							 | 
							
								 | 
							
							You are not responsible for enforcing compliance by third parties with
 | 
						
						
						
						
							 | 
							
								 | 
							
							this License.
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							  11. If, as a consequence of a court judgment or allegation of patent
 | 
						
						
						
						
							 | 
							
								 | 
							
							infringement or for any other reason (not limited to patent issues),
 | 
						
						
						
						
							 | 
							
								 | 
							
							conditions are imposed on you (whether by court order, agreement or
 | 
						
						
						
						
							 | 
							
								 | 
							
							otherwise) that contradict the conditions of this License, they do not
 | 
						
						
						
						
							 | 
							
								 | 
							
							excuse you from the conditions of this License.  If you cannot
 | 
						
						
						
						
							 | 
							
								 | 
							
							distribute so as to satisfy simultaneously your obligations under this
 | 
						
						
						
						
							 | 
							
								 | 
							
							License and any other pertinent obligations, then as a consequence you
 | 
						
						
						
						
							 | 
							
								 | 
							
							may not distribute the Library at all.  For example, if a patent
 | 
						
						
						
						
							 | 
							
								 | 
							
							license would not permit royalty-free redistribution of the Library by
 | 
						
						
						
						
							 | 
							
								 | 
							
							all those who receive copies directly or indirectly through you, then
 | 
						
						
						
						
							 | 
							
								 | 
							
							the only way you could satisfy both it and this License would be to
 | 
						
						
						
						
							 | 
							
								 | 
							
							refrain entirely from distribution of the Library.
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							If any portion of this section is held invalid or unenforceable under any
 | 
						
						
						
						
							 | 
							
								 | 
							
							particular circumstance, the balance of the section is intended to apply,
 | 
						
						
						
						
							 | 
							
								 | 
							
							and the section as a whole is intended to apply in other circumstances.
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							It is not the purpose of this section to induce you to infringe any
 | 
						
						
						
						
							 | 
							
								 | 
							
							patents or other property right claims or to contest validity of any
 | 
						
						
						
						
							 | 
							
								 | 
							
							such claims; this section has the sole purpose of protecting the
 | 
						
						
						
						
							 | 
							
								 | 
							
							integrity of the free software distribution system which is
 | 
						
						
						
						
							 | 
							
								 | 
							
							implemented by public license practices.  Many people have made
 | 
						
						
						
						
							 | 
							
								 | 
							
							generous contributions to the wide range of software distributed
 | 
						
						
						
						
							 | 
							
								 | 
							
							through that system in reliance on consistent application of that
 | 
						
						
						
						
							 | 
							
								 | 
							
							system; it is up to the author/donor to decide if he or she is willing
 | 
						
						
						
						
							 | 
							
								 | 
							
							to distribute software through any other system and a licensee cannot
 | 
						
						
						
						
							 | 
							
								 | 
							
							impose that choice.
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							This section is intended to make thoroughly clear what is believed to
 | 
						
						
						
						
							 | 
							
								 | 
							
							be a consequence of the rest of this License.
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							  12. If the distribution and/or use of the Library is restricted in
 | 
						
						
						
						
							 | 
							
								 | 
							
							certain countries either by patents or by copyrighted interfaces, the
 | 
						
						
						
						
							 | 
							
								 | 
							
							original copyright holder who places the Library under this License may add
 | 
						
						
						
						
							 | 
							
								 | 
							
							an explicit geographical distribution limitation excluding those countries,
 | 
						
						
						
						
							 | 
							
								 | 
							
							so that distribution is permitted only in or among countries not thus
 | 
						
						
						
						
							 | 
							
								 | 
							
							excluded.  In such case, this License incorporates the limitation as if
 | 
						
						
						
						
							 | 
							
								 | 
							
							written in the body of this License.
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							  13. The Free Software Foundation may publish revised and/or new
 | 
						
						
						
						
							 | 
							
								 | 
							
							versions of the Lesser General Public License from time to time.
 | 
						
						
						
						
							 | 
							
								 | 
							
							Such new versions will be similar in spirit to the present version,
 | 
						
						
						
						
							 | 
							
								 | 
							
							but may differ in detail to address new problems or concerns.
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							Each version is given a distinguishing version number.  If the Library
 | 
						
						
						
						
							 | 
							
								 | 
							
							specifies a version number of this License which applies to it and
 | 
						
						
						
						
							 | 
							
								 | 
							
							"any later version", you have the option of following the terms and
 | 
						
						
						
						
							 | 
							
								 | 
							
							conditions either of that version or of any later version published by
 | 
						
						
						
						
							 | 
							
								 | 
							
							the Free Software Foundation.  If the Library does not specify a
 | 
						
						
						
						
							 | 
							
								 | 
							
							license version number, you may choose any version ever published by
 | 
						
						
						
						
							 | 
							
								 | 
							
							the Free Software Foundation.
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							  14. If you wish to incorporate parts of the Library into other free
 | 
						
						
						
						
							 | 
							
								 | 
							
							programs whose distribution conditions are incompatible with these,
 | 
						
						
						
						
							 | 
							
								 | 
							
							write to the author to ask for permission.  For software which is
 | 
						
						
						
						
							 | 
							
								 | 
							
							copyrighted by the Free Software Foundation, write to the Free
 | 
						
						
						
						
							 | 
							
								 | 
							
							Software Foundation; we sometimes make exceptions for this.  Our
 | 
						
						
						
						
							 | 
							
								 | 
							
							decision will be guided by the two goals of preserving the free status
 | 
						
						
						
						
							 | 
							
								 | 
							
							of all derivatives of our free software and of promoting the sharing
 | 
						
						
						
						
							 | 
							
								 | 
							
							and reuse of software generally.
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
										    NO WARRANTY
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							  15. BECAUSE THE LIBRARY IS LICENSED FREE OF CHARGE, THERE IS NO
 | 
						
						
						
						
							 | 
							
								 | 
							
							WARRANTY FOR THE LIBRARY, TO THE EXTENT PERMITTED BY APPLICABLE LAW.
 | 
						
						
						
						
							 | 
							
								 | 
							
							EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR
 | 
						
						
						
						
							 | 
							
								 | 
							
							OTHER PARTIES PROVIDE THE LIBRARY "AS IS" WITHOUT WARRANTY OF ANY
 | 
						
						
						
						
							 | 
							
								 | 
							
							KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE
 | 
						
						
						
						
							 | 
							
								 | 
							
							IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 | 
						
						
						
						
							 | 
							
								 | 
							
							PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE
 | 
						
						
						
						
							 | 
							
								 | 
							
							LIBRARY IS WITH YOU.  SHOULD THE LIBRARY PROVE DEFECTIVE, YOU ASSUME
 | 
						
						
						
						
							 | 
							
								 | 
							
							THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
							  16. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN
 | 
						
						
						
						
							 | 
							
								 | 
							
							WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY
 | 
						
						
						
						
							 | 
							
								 | 
							
							AND/OR REDISTRIBUTE THE LIBRARY AS PERMITTED ABOVE, BE LIABLE TO YOU
 | 
						
						
						
						
							 | 
							
								 | 
							
							FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR
 | 
						
						
						
						
							 | 
							
								 | 
							
							CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE
 | 
						
						
						
						
							 | 
							
								 | 
							
							LIBRARY (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING
 | 
						
						
						
						
							 | 
							
								 | 
							
							RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A
 | 
						
						
						
						
							 | 
							
								 | 
							
							FAILURE OF THE LIBRARY TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF
 | 
						
						
						
						
							 | 
							
								 | 
							
							SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
 | 
						
						
						
						
							 | 
							
								 | 
							
							DAMAGES.
 | 
						
						
						
						
							 | 
							
								 | 
							
							
 | 
						
						
						
						
							 | 
							
								 | 
							
									     END OF TERMS AND CONDITIONS |