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
