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 satisfi es 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 fi le 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 signifi cant
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
defi ned by law.
If such an object fi le 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 fi le 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 modifi cation of the work for the customer’s
own use and reverse engineering for debugging such
modifi cations.
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
modifi ed executable containing the modifi ed Library. (It
Summary of Contents for YP-U4JQB
Page 85: ...REV 0 0 ...
