cv2_venv_installer

#! /bin/bash

if [ -z "$1" ]
then
    echo "First argument is a path to the OpenCV source repo cloned from github";
fi

if [ -z "$2" ]
then
    echo "Second path is where you want the venv to end up";
fi

REQUIRED="libavdevice-dev"

apt-cache show $REQUIRED > /dev/null || { echo "Please sudo apt-get install $REQUIRED"; exit 1; }

OPENCV_SRC=`realpath $1`;
VENV_PATH=$2;
TEMPDIR=`mktemp -d`

if [ ! -d "$VENV_PATH" ]; then
    /usr/bin/pyvenv-3.5 $VENV_PATH;
fi

. $VENV_PATH/bin/activate || exit;
PREFIX=`python -c 'import sys; print(sys.prefix)'`;
echo "sys.prefix= $PREFIX";
echo "tempdir= $TEMPDIR";

pip install numpy;

cd $TEMPDIR;
echo "CONFIGURE";
cmake $OPENCV_SRC -DCMAKE_BUILD_TYPE=RELEASE -DCMAKE_INSTALL_PREFIX=$PREFIX &> install_log;
echo "MAKE"
make -j8 1> make_log 2> make_err;
echo "INSTALL"
make install 1> install_log 2> install_err;
echo "DONE";

python -c 'import cv2; print(cv2.__file__)';
#python -c 'import cv2; print(cv2.VideoCapture("/home/br/Downloads/test_0.mov").isOpened());'