ENGLISH
84
OPEN SOURCE LICENSE
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
