View difference between Paste ID: tQwYGmfs and KLpEdQ4D

 #https://www.pyimagesearch.com/2016/04/18/install-guide-raspberry-pi-3-raspbian-jessie-opencv-3/
 # sudo raspi-config  #use all of the SD card.
 mydir="/home/pi/lfs"
 mycores="-j4"
-set -euf -o pipefail #sipb.mit.ede safe scripting tutorial
+set -euf -o pipefail      #sipb.mit.ede safe scripting tutorial
 
 function createLFS {
  ! [ -d "$mydir" ] &&  mkdir "$mydir"
 }
 
 # sudo apt update; sudo apt-get upgrade; sudo rpi-update
 sudo apt purge wolfram-engine; sudo apt purge libreoffice
 sudo apt install     -y build-essential git cmake pkg-config
 sudo apt-get         -y  install python2.7-dev python3-dev
 sudo apt install     -y  libjpeg-dev libtiff5-dev libjasper-dev libpng12-dev
 sudo apt-get install -y  libavcodec-dev libavformat-dev libswscale-dev libv4l-dev
 sudo apt install     -y  libavutil-dev  libavdevice-dev
 sudo apt-get install -y libxvidcore-dev libx264-dev
 sudo apt-get install -y libgtk2.0-dev
 sudo apt-get install -y libatlas-base-dev gfortran
 wget -nc https://bootstrap.pypa.io/get-pip.py; sudo python get-pip.py
 sudo pip2 install  numpy
 sudo pip3 install  numpy
 
 cd "$mydir"
-wget -O opencv_contrib.zip https://github.com/Itseez/opencv_contrib/archive/3.3.0.zip
+# files copied over already into lfs folder
-unzip opencv_contrib.zip
+#wget -O opencv_contrib.zip https://github.com/Itseez/opencv_contrib/archive/3.3.0.zip
 #unzip opencv_contrib.zip
 
 ################# SET SWAPFILE SIZE ##############
 # cd /etc/dphys-swapfile
 # https://www.bitpi.co/2015/02/11/how-to-change-raspberry-pis-swapfile-size-on-rasbian/
 # edit file
-# sudo /etc/init.d/dphys-swapfile swapoff
+
-# sudo /etc/init.d/dphys-swapfile swapon
+# sudo /etc/dphys-swapfile swapoff
 # sudo /etc/dphys-swapfile swapon
-git clone https://github.com/opencv/opencv.git
+
 #git clone https://github.com/opencv/opencv.git
-git checkout 3.3.0
+
 #git checkout 3.3.0
 git checkout master
 git pull
 # rm -rf build
 mkdir build && cd build
 cmake -D CMAKE_BUILD_TYPE=RELEASE \
       -D CMAKE_INSTALL_PREFIX=/usr/local \
       -D OPENCV_EXTRA_MODULES_PATH="$mydir/opencv_contrib-3.3.0/modules" \
       -D BUILD_TESTS=OFF  ..
 #      -D INSTALL_PYTHON_EXAMPLES=ON \
 #      -D BUILD_EXAMPLES=ON ..
 #      -D PYTHON_EXECUTABLE=/usr/bin/python3.5 \
 #      -D PYTHON_PACKAGES_PATHS=/usr/local/lib/python3.5/dist-packages \
 #      -D PYTHON_NUMPY_INCLUDE_DIRS=/usr/local/lib/python3.5/dist-packages/numpy/core/include ..  \
 #      -D ENABLE_NEON=ON \
 #      -D ENABLE_VFPV3=ON \
 
 make -j4; sudo make install; sudo ldconfig
 #go back to swap file reset to 100mb!
 
 function post_install_opencv {
 if [ ! -e "/etc/ld.so.conf.d/opencv.conf" ]; then
  sudo sh -c 'echo "/usr/local/lib" >> /etc/ld.so.conf.d/opencv.conf'
 fi
 sudo ldconfig
 echo "finding the cv2.so package at usr/local/lib"
 find /usr/local/lib/ -type f -name "cv2*.so"
 # outputs
 #/usr/local/lib/python2.7/dist-packages/cv2.so
 #/usr/local/lib/python3.5/dist-packages/cv2.cpython-35m-x86_64-linux-gnu.so
 #cd /usr/local/lib/python3.5/dist-packages
 echo "moving(renaming) the x86 cv2 file to cv2.so"
 cd /usr/local/lib/python3.5/dist-packages
 sudo mv cv2.cpython-35m-x86_64-linux-gnu.so cv2.so
 #ln -s /usr/local/lib/python3.5/dist-packages/cv2.cpython-36m-x86_64-linux-gnu.so cv2.so
 }
 
 
 #https://www.pyimagesearch.com/2016/04/18/install-guide-raspberry-pi-3-raspbian-jessie-opencv-3/
 # make certain that cv2.so in site packages are in both python2 and 3 . See web for details.