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
194
GNU LESSER GENERAL PUBLIC LICENSE
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.