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 ac-
cess 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 cov-
ered 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 your 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 ma-
chine-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 con-
tradiction 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 automat-
ically 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
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
11. BECAUSE THE PROGRAM IS LICENSED FREE OF
CHARGE, THERE IS NO WARRANTY FOR THE PROGRAM,
TO THE EXTENT PERMITTED BY APPLICABLE LAW.
EXCEPT WHEN OTHERWISE STATED IN WRITING THE
COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE
THE PROGRAM “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 PROGRAM IS WITH YOU.
SHOULD THE PROGRAM PROVE DEFECTIVE, YOU
ASSUME THE COST OF ALL NECESSARY SERVICING,
REPAIR OR CORRECTION.
12. 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 PROGRAM AS PERMITTED
ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING
ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUEN-
TIAL DAMAGES ARISING OUT OF THE USE OR INABILITY
TO USE THE PROGRAM (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 PROGRAM TO OPERATE WITH ANY
OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER
PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
SUCH DAMAGES.
GNU LESSER GENERAL PUBLIC LICENSE
Version 2.1, February 1999
Copyright (C) 1991, 1999 Free Software Foundation, Inc.
59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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 con-
tents 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.
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 Gen-
eral 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
