| 
								
							 | 
							
								 
							 | 
						
						
						
							| 
								
							 | 
							
										  GNU LIBRARY GENERAL PUBLIC LICENSE
							 | 
						
						
						
							| 
								
							 | 
							
										       Version 2, June 1991
							 | 
						
						
						
							| 
								
							 | 
							
								
							 | 
						
						
						
							| 
								
							 | 
							
								
							 | 
						
						
						
							| 
								
							 | 
							
								 Copyright (C) 1991 Free Software Foundation, Inc.
							 | 
						
						
						
							| 
								
							 | 
							
								                    675 Mass Ave, Cambridge, MA 02139, 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 library GPL.  It is
							 | 
						
						
						
							| 
								
							 | 
							
								 numbered 2 because it goes with version 2 of the ordinary GPL.]
							 | 
						
						
						
							| 
								
							 | 
							
								
							 | 
						
						
						
							| 
								
							 | 
							
											    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 Library General Public License, applies to some
							 | 
						
						
						
							| 
								
							 | 
							
								specially designated Free Software Foundation software, and to any
							 | 
						
						
						
							| 
								
							 | 
							
								other libraries whose authors decide to use it.  You can use it for
							 | 
						
						
						
							| 
								
							 | 
							
								your libraries, too.
							 | 
						
						
						
							| 
								
							 | 
							
								
							 | 
						
						
						
							| 
								
							 | 
							
								  When we speak of free software, we are referring to freedom, 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 or use pieces of it
							 | 
						
						
						
							| 
								
							 | 
							
								in new free programs; and that you know you can do these things.
							 | 
						
						
						
							| 
								
							 | 
							
								
							 | 
						
						
						
							| 
								
							 | 
							
								  To protect your rights, we need to make restrictions that forbid
							 | 
						
						
						
							| 
								
							 | 
							
								anyone to deny you these rights or to ask you to surrender the 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 a program 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.
							 | 
						
						
						
							| 
								
							 | 
							
								
							 | 
						
						
						
							| 
								
							 | 
							
								  Our method of protecting your rights has two steps: (1) copyright
							 | 
						
						
						
							| 
								
							 | 
							
								the library, and (2) offer you this license which gives you legal
							 | 
						
						
						
							| 
								
							 | 
							
								permission to copy, distribute and/or modify the library.
							 | 
						
						
						
							| 
								
							 | 
							
								
							 | 
						
						
						
							| 
								
							 | 
							
								  Also, for each distributor's protection, we want to make certain
							 | 
						
						
						
							| 
								
							 | 
							
								that everyone understands that there is no warranty for this free
							 | 
						
						
						
							| 
								
							 | 
							
								library.  If the library is modified by someone else and passed on, we
							 | 
						
						
						
							| 
								
							 | 
							
								want its recipients to know that what they have is not the original
							 | 
						
						
						
							| 
								
							 | 
							
								version, so that any problems introduced by others will not reflect on
							 | 
						
						
						
							| 
								
							 | 
							
								the original authors' reputations.
							 | 
						
						
						
							| 
								
							 | 
							
								
							 | 
						
						
						
							| 
								
							 | 
							
								  Finally, any free program is threatened constantly by software
							 | 
						
						
						
							| 
								
							 | 
							
								patents.  We wish to avoid the danger that companies distributing free
							 | 
						
						
						
							| 
								
							 | 
							
								software will individually obtain patent licenses, thus in effect
							 | 
						
						
						
							| 
								
							 | 
							
								transforming the program into proprietary software.  To prevent this,
							 | 
						
						
						
							| 
								
							 | 
							
								we have made it clear that any patent must be licensed for everyone's
							 | 
						
						
						
							| 
								
							 | 
							
								free use or not licensed at all.
							 | 
						
						
						
							| 
								
							 | 
							
								
							 | 
						
						
						
							| 
								
							 | 
							
								  Most GNU software, including some libraries, is covered by the ordinary
							 | 
						
						
						
							| 
								
							 | 
							
								GNU General Public License, which was designed for utility programs.  This
							 | 
						
						
						
							| 
								
							 | 
							
								license, the GNU Library General Public License, applies to certain
							 | 
						
						
						
							| 
								
							 | 
							
								designated libraries.  This license is quite different from the ordinary
							 | 
						
						
						
							| 
								
							 | 
							
								one; be sure to read it in full, and don't assume that anything in it is
							 | 
						
						
						
							| 
								
							 | 
							
								the same as in the ordinary license.
							 | 
						
						
						
							| 
								
							 | 
							
								
							 | 
						
						
						
							| 
								
							 | 
							
								  The reason we have a separate public license for some libraries is that
							 | 
						
						
						
							| 
								
							 | 
							
								they blur the distinction we usually make between modifying or adding to a
							 | 
						
						
						
							| 
								
							 | 
							
								program and simply using it.  Linking a program with a library, without
							 | 
						
						
						
							| 
								
							 | 
							
								changing the library, is in some sense simply using the library, and is
							 | 
						
						
						
							| 
								
							 | 
							
								analogous to running a utility program or application program.  However, in
							 | 
						
						
						
							| 
								
							 | 
							
								a textual and legal sense, the linked executable is a combined work, a
							 | 
						
						
						
							| 
								
							 | 
							
								derivative of the original library, and the ordinary General Public License
							 | 
						
						
						
							| 
								
							 | 
							
								treats it as such.
							 | 
						
						
						
							| 
								
							 | 
							
								
							 | 
						
						
						
							| 
								
							 | 
							
								  Because of this blurred distinction, using the ordinary General
							 | 
						
						
						
							| 
								
							 | 
							
								Public License for libraries did not effectively promote software
							 | 
						
						
						
							| 
								
							 | 
							
								sharing, because most developers did not use the libraries.  We
							 | 
						
						
						
							| 
								
							 | 
							
								concluded that weaker conditions might promote sharing better.
							 | 
						
						
						
							| 
								
							 | 
							
								
							 | 
						
						
						
							| 
								
							 | 
							
								  However, unrestricted linking of non-free programs would deprive the
							 | 
						
						
						
							| 
								
							 | 
							
								users of those programs of all benefit from the free status of the
							 | 
						
						
						
							| 
								
							 | 
							
								libraries themselves.  This Library General Public License is intended to
							 | 
						
						
						
							| 
								
							 | 
							
								permit developers of non-free programs to use free libraries, while
							 | 
						
						
						
							| 
								
							 | 
							
								preserving your freedom as a user of such programs to change the free
							 | 
						
						
						
							| 
								
							 | 
							
								libraries that are incorporated in them.  (We have not seen how to achieve
							 | 
						
						
						
							| 
								
							 | 
							
								this as regards changes in header files, but we have achieved it as regards
							 | 
						
						
						
							| 
								
							 | 
							
								changes in the actual functions of the Library.)  The hope is that this
							 | 
						
						
						
							| 
								
							 | 
							
								will lead to faster development of free libraries.
							 | 
						
						
						
							| 
								
							 | 
							
								
							 | 
						
						
						
							| 
								
							 | 
							
								  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, while the latter only
							 | 
						
						
						
							| 
								
							 | 
							
								works together with the library.
							 | 
						
						
						
							| 
								
							 | 
							
								
							 | 
						
						
						
							| 
								
							 | 
							
								  Note that it is possible for a library to be covered by the ordinary
							 | 
						
						
						
							| 
								
							 | 
							
								General Public License rather than by this special one.
							 | 
						
						
						
							| 
								
							 | 
							
								
							 | 
						
						
						
							| 
								
							 | 
							
										  GNU LIBRARY GENERAL PUBLIC LICENSE
							 | 
						
						
						
							| 
								
							 | 
							
								   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
							 | 
						
						
						
							| 
								
							 | 
							
								
							 | 
						
						
						
							| 
								
							 | 
							
								  0. This License Agreement applies to any software library which
							 | 
						
						
						
							| 
								
							 | 
							
								contains a notice placed by the copyright holder or other authorized
							 | 
						
						
						
							| 
								
							 | 
							
								party saying it may be distributed under the terms of this Library
							 | 
						
						
						
							| 
								
							 | 
							
								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 compile 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) 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.
							 | 
						
						
						
							| 
								
							 | 
							
								
							 | 
						
						
						
							| 
								
							 | 
							
								    c) 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.
							 | 
						
						
						
							| 
								
							 | 
							
								
							 | 
						
						
						
							| 
								
							 | 
							
								    d) 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 source code 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 to
							 | 
						
						
						
							| 
								
							 | 
							
								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 Library 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
							 | 
						
						
						
							| 
								
							 | 
							
								
							 | 
						
						
						
							| 
								
							 | 
							
								     Appendix: How to Apply These Terms to Your New Libraries
							 | 
						
						
						
							| 
								
							 | 
							
								
							 | 
						
						
						
							| 
								
							 | 
							
								  If you develop a new library, and you want it to be of the greatest
							 | 
						
						
						
							| 
								
							 | 
							
								possible use to the public, we recommend making it free software that
							 | 
						
						
						
							| 
								
							 | 
							
								everyone can redistribute and change.  You can do so by permitting
							 | 
						
						
						
							| 
								
							 | 
							
								redistribution under these terms (or, alternatively, under the terms of the
							 | 
						
						
						
							| 
								
							 | 
							
								ordinary General Public License).
							 | 
						
						
						
							| 
								
							 | 
							
								
							 | 
						
						
						
							| 
								
							 | 
							
								  To apply these terms, attach the following notices to the library.  It is
							 | 
						
						
						
							| 
								
							 | 
							
								safest to attach them to the start of each source file to most effectively
							 | 
						
						
						
							| 
								
							 | 
							
								convey the exclusion of warranty; and each file should have at least the
							 | 
						
						
						
							| 
								
							 | 
							
								"copyright" line and a pointer to where the full notice is found.
							 | 
						
						
						
							| 
								
							 | 
							
								
							 | 
						
						
						
							| 
								
							 | 
							
								    <one line to give the library's name and a brief idea of what it does.>
							 | 
						
						
						
							| 
								
							 | 
							
								    Copyright (C) <year>  <name of author>
							 | 
						
						
						
							| 
								
							 | 
							
								
							 | 
						
						
						
							| 
								
							 | 
							
								    This library is free software; you can redistribute it and/or
							 | 
						
						
						
							| 
								
							 | 
							
								    modify it under the terms of the GNU Library General Public
							 | 
						
						
						
							| 
								
							 | 
							
								    License as published by the Free Software Foundation; either
							 | 
						
						
						
							| 
								
							 | 
							
								    version 2 of the License, or (at your option) any later version.
							 | 
						
						
						
							| 
								
							 | 
							
								
							 | 
						
						
						
							| 
								
							 | 
							
								    This library is distributed in the hope that it will be useful,
							 | 
						
						
						
							| 
								
							 | 
							
								    but WITHOUT ANY WARRANTY; without even the implied warranty of
							 | 
						
						
						
							| 
								
							 | 
							
								    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
							 | 
						
						
						
							| 
								
							 | 
							
								    Library General Public License for more details.
							 | 
						
						
						
							| 
								
							 | 
							
								
							 | 
						
						
						
							| 
								
							 | 
							
								    You should have received a copy of the GNU Library General Public
							 | 
						
						
						
							| 
								
							 | 
							
								    License along with this library; if not, write to the Free
							 | 
						
						
						
							| 
								
							 | 
							
								    Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
							 | 
						
						
						
							| 
								
							 | 
							
								
							 | 
						
						
						
							| 
								
							 | 
							
								Also add information on how to contact you by electronic and paper mail.
							 | 
						
						
						
							| 
								
							 | 
							
								
							 | 
						
						
						
							| 
								
							 | 
							
								You should also get your employer (if you work as a programmer) or your
							 | 
						
						
						
							| 
								
							 | 
							
								school, if any, to sign a "copyright disclaimer" for the library, if
							 | 
						
						
						
							| 
								
							 | 
							
								necessary.  Here is a sample; alter the names:
							 | 
						
						
						
							| 
								
							 | 
							
								
							 | 
						
						
						
							| 
								
							 | 
							
								  Yoyodyne, Inc., hereby disclaims all copyright interest in the
							 | 
						
						
						
							| 
								
							 | 
							
								  library `Frob' (a library for tweaking knobs) written by James Random Hacker.
							 | 
						
						
						
							| 
								
							 | 
							
								
							 | 
						
						
						
							| 
								
							 | 
							
								  <signature of Ty Coon>, 1 April 1990
							 | 
						
						
						
							| 
								
							 | 
							
								  Ty Coon, President of Vice
							 | 
						
						
						
							| 
								
							 | 
							
								
							 | 
						
						
						
							| 
								
							 | 
							
								That's all there is to it!
							 | 
						
						
						
							| 
								
							 | 
							
								
							 |