error in installation of openCV -3.3.0 on mint 18.2.

edit

after i download open CV and try to build it using the cmake command the entire process frezzes midway. here is the last few lines after which the process stops. Please Help

-- Looking for linux/videodev2.h

-- Looking for linux/videodev2.h - found

-- Looking for sys/videoio.h

-- Looking for sys/videoio.h - not found

-- Checking for modules 'libavcodec;libavformat;libavutil;libswscale'

-- Found libavcodec, version 56.60.100

-- Found libavformat, version 56.40.101

-- Found libavutil, version 54.31.100

-- Found libswscale, version 3.1.101

-- Checking for module 'libavresample'

-- No package 'libavresample' found

-- Checking for module 'libgphoto2'

-- No package 'libgphoto2' found

-- IPPICV: Download: ippicv_2017u2_lnx_intel64_20170418.tgz

/* after this line nothing happens . */