This set of scripts downloads OpenCV, required additional packages, imports python libs from the target board and transfers the cross-compiled library back to the board to be installed.
Launch the script with
chmod +x fullProcess.sh
./fullProcess.sh
and install the compiled library executing, in the target board,
sudo rsync -av installation/ /usr/local
For more information visit http://www.alvaroferran.com/blog/cross-compiling-opencv-for-arm-boards