Opencv light version?

I am using a python GUI framework called Kivy that also support app packaging for android. The problem is that opencv is a HUGE import on mobile, takes tons of space and the biggest chunk of app loading time (0.2s on my device) is just import cv2. I am using only imread, decode flip and some basic functions and constants, is it somehow possible to recompile the library with basic functionality? Or somehow strip it?