Hello,

When we distribute a project that use Qt under LGPL license, do we have to distribute the LGPL license file (http://doc.qt.nokia.com/4.6/lgpl.html)? I mean, do we have to display this license in the software directly (for example in an "about" form) or do we have to copy this license during installation (deployement) of the software.

The LGPL license says under point 6 (Note that I link dynamically to Qt):
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:
...
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, as long as the modified version is
interface-compatible with the version that the work was made with.
I do not find this point very clear.

Thanks in advance for your help
Best regards