How to build OpenCV 3.0 + Qt (installed)?

Question

C++ / C#

The problem with building OpenCV 3.0 + Qt5.2.1 (installed), Windows 7 OS
I set
the paths to Qt, QtCreator, mingw in PATH
First, the process was stuck on the dll-ke (it was decided by removing the IPP flag )

And with this I can’t even imagine that make

Answer 1

There was a solution to the problem ( bugtracker )
In the source folder (source), you need to go to /cmake/ and correct the compilation settings (in the file OpenCVCompilerOptions.cmake):
comment out the line

add_extra_compiler_option(-Werror=non-virtual-dtor)

Answer 2

I can offer to see how this is done in MSYS2 . Look at the patches they apply before assembling. If the goal is just to get the compiled library, it's easier to take the installer and download all the libraries necessary for the work through it.