INCLUDEPATH in qmake project file doesn't work

Question

I\'ve got a problem with include in a qmake project. In my .pro file I\'ve got:

INCLUDEPATH += \"C:\\OpenCV\\build\\include\"

and in my cpp

Answer 1

I ran into a similar issue and what I found is that the QtCreator IDE is not re-reading the results of qmake and updating the "Cannot open" message. You need to close the offending file and re-open it - then you'll see that it no longer displays the error.