Yes, you can.
Forgot to mention that the application and the layer library are commercial closed-source software. And I was wondering where and do I need to post a link to trolltech.com
It doesn't seem that a link is needed, but it can be nice to include one. Maybe your application will appear on Qt website.
Don't forget that you can include upto 5% of the total size of the Library into your object code as long as such code is limited to code from header files such as numerical parameters, data structure layouts, accessors, macros, inline functions and templates.
Commercial closed source doesn't really matter any more so long as you abide by the LGPL with the above additional rights.
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