A custom plugin gives me an error 'No such file or directory'

[tonnot]

I have a custom plugin. It is well built and works fine (if fact is a widget I copy from analogwidgets)
I choose it from the plugins and put it onto my form.
When build my project I have :
'No such file or directory' For #include "analogwidgets/wallclock.h"

And I dont understand this, plugins need the .h files ?
What have I forgotten ?

Thanks

[wysota]

You have forgotten that the plugin is only for making the widget available in Designer and you still need to link with the widget code in your application.