Technical data
Chapter 14 207
Copyright Information
Copyright Information
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 accessories, 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. 
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 modified executable containing 
the modified Library. (It is understood that the user who changes the 
contents of definitions files in the Library will not necessarily be able to 
recompile the application to use the modified definitions.) 
b) Use a suitable shared library mechanism for linking with the 
Library. A suitable mechanism 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 operate 
properly with a modified version of the library, if the user installs one, 










