[Interest] Qt undefined reference to `LED::LED(QWidget*)' LED in a custom widget

[Robert Wood]

Hi folks,


I have downloaded this project:

http://www.ics.com/blog/integrating-custom-widget-qt-designer

And installed it by running qmake, make, make install (the latter as 
root) in the directory the source code was copied to.

This then put the custom widget in Qt Designer and allowed me to place 
the widget on a form. So far, so good. It complained about not having 
the right header file I so copied cutescreenwidget.h to /usr/local/include/

That took away one error. However, I then got:

~/Software/Qt5/WidgetTesting/build-led_inc_test-Desktop_9516b5-Debug/ui_mainwindow.h:42: 
error: undefined reference to `LED::LED(QWidget*)'

I tried copying libled-designer-plugin.so to /usr/lib64. It didn't help.

If I try copying the LED widget source code to my directory and place 
the LEDs in Qt Creator it works. So, there must be, I guess, something I 
haven't done properly when installing the custom widget?

Many thanks,

Rob