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marily used for software interchange.
If distribution of object code is made by offering access to copy from a designated place,
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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 acces-
sors, 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.
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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 ca-
tion of the work for the customer‘s own use and reverse engineering for debugging such
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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
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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 dis-
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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 is understood that the user
who changes the contents of defi nitions fi les in the Library will not necessarily be able to
recompile the application to use the modifi ed defi nitions.)
b) Use a suitable shared library mechanism for linking with the Library. A suitable mecha-
nism 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
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c) Accompany the work with a written offer, valid for at least three years, to give the same
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