centos 7.2 install opencv-3.4.4
cd ~
yum -y install epel-release
yum -y localinstall --nogpgcheck https://download1.rpmfusion.org/free/el/rpmfusion-free-release-7.noarch.rpm
yum -y localinstall --nogpgcheck https://download1.rpmfusion.org/nonfree/el/rpmfusion-nonfree-release-7.noarch.rpm
rpm --import http://li.nux.ro/download/nux/RPM-GPG-KEY-nux.ro
rpm -Uvh http://li.nux.ro/download/nux/dextop/el7/x86_64/nux-dextop-release-0-1.el7.nux.noarch.rpm
yum -y install cmake
yum -y install gcc gcc-c++ kernel-devel
yum -y install gcc-gfortran
yum -y install git
yum -y install libgnomeui-devel
yum -y install gtk2 gtk2-devel gtk2-devel-docs
yum -y install gnome-devel gnome-devel-docs
yum -y install ffmpeg ffmpeg-devel
yum -y install python-devel numpy
yum -y install libdc1394-devel
yum -y install libv4l-devel
yum -y install gstreamer-plugins-base-devel
yum -y install unzip zip
unzip opencv-3.4.4.zip
vim opencv-3.4.4/3rdparty/ippicv/ippicv.cmake
:48
file:///root/ippicv_2019_lnx_intel64_general_20180723.tgz
#"https://raw.githubusercontent.com/opencv/opencv_3rdparty/${IPPICV_COMMIT}/ippicv/"
:wq
cd opencv-3.4.4
mkdir build
cd build
cmake -D WITH_TBB=ON -D WITH_EIGEN=ON ..
make
make install
echo "/usr/local/lib64" > /etc/ld.so.conf.d/opencv.conf
vi /etc/profile
:$
export PKG_CONFIG_PATH=/usr/local/lib64/pkgconfig:$PKG_CONFIG_PATH
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/lib64
:wq
source /etc/profile
ldconfig
pkg-config --cflags opencv
pkg-config --modversion opencv
