# Note: depends on cmake
wget -c https://github.com/opencv/opencv/archive/4.1.0/opencv-4.1.0.tar.gz
tar -xzf opencv-4.1.0.tar.gz
cd opencv-4.1.0
sed -i -e '/./d' cmake/*Download* # Running cmake should not result in any downloads
mkdir -p build
cd build
cmake -DCMAKE_INSTALL_PREFIX="/usr" -DWITH_IPP=OFF -DWITH_ADE=OFF ..
make # Doesn't mind -j#
make install