Filter
Top Products
92
US
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 assessors, 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.