How to Install openCV on olimex A20 micro 4gb

[Gokul Dhanwate]

Hello

I am using olimex a20 with official debian image (earlier release).I have crossed compiled Qt5 for olimex.
I want to use Qmultimedia and Qwebkit modules of Qt.
And I am using LinuxFB and EGLFS platform.These platform plugins does not support wigdet mixing such as Cameraview finder on Qwigdet.
Can I use openCV for that purpose?
How to install openCV on olimex a20?

(I know latest release of linux image for olimex have opencv but I want to install in this image)

thanks..