In Ubuntu 16.04, install the dependencies first and then build the OpenCV 3.3 from source. sudo apt-get install --assume-yes build-essential cmake git sudo apt-get install --assume-yes pkg-config ...

invalid question (invalid tracker)ask questions and other "no action" items here: https://forum.opencv.orgask questions and other "no action" items here: https://forum.opencv.org Ubuntu* 16.04 ...