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 . */