Chapter 9 Appendix
GPL/LGPL Software License
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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.
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 ofperforming 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,
