Build .deb package for OpenCV 4 with Python3 bindings. Optimized for Raspberry PI deep learning purposes (NEON, VFPV3, Eigen3, TBB turned on).

create_opencv_deb.sh

#!/usr/bin/env bash

MAINTAINER="Dario Limongi"
VERSION=4.1.0

# Adapted from https://www.pyimagesearch.com/2018/09/26/install-opencv-4-on-your-raspberry-pi/
sudo apt update && sudo apt upgrade -y
sudo apt-get install -y \
	build-essential ccache cmake unzip pkg-config curl \
	libjpeg-dev libpng-dev libtiff-dev \
	libavcodec-dev libavformat-dev libswscale-dev libv4l-dev \
	libxvidcore-dev libx264-dev libjasper1 libjasper-dev \
	libgtk-3-dev libcanberra-gtk* \
	libatlas-base-dev gfortran \
	libeigen3-dev libtbb-dev \
	python3-dev python3-numpy python-dev python-numpy

# Create temporary root directory, download and unzip OpenCV
rm -rf ~/opencv-build
mkdir ~/opencv-build
cd ~/opencv-build
curl -L https://github.com/opencv/opencv/archive/${VERSION}.tar.gz | tar xz
curl -L https://github.com/opencv/opencv_contrib/archive/${VERSION}.tar.gz | tar xz

# Create build folder
cd opencv-${VERSION}
mkdir build
cd build

# Configure OpenCV with NEON/VFPV3 arguments + redistributable package install
cmake .. \
	-DCPACK_BINARY_DEB=ON \
	-DCMAKE_BUILD_TYPE=Release \
	-DCMAKE_INSTALL_PREFIX=/usr/local \
	-DOPENCV_GENERATE_PKGCONFIG=ON \
	-DOPENCV_EXTRA_MODULES_PATH=~/opencv-build/opencv_contrib-${VERSION}/modules \
	-DOPENCV_VCSVERSION=${VERSION} \
	-DEXTRA_MODULES_VCSVERSION=${VERSION} \
	-DBUILD_opencv_python2=ON \
	-DBUILD_opencv_python3=ON \
	-DBUILD_PERF_TESTS=OFF \
	-DBUILD_EXAMPLES=OFF \
	-DBUILD_TESTS=OFF \
	-DBUILD_PACKAGE=ON \
	-DINSTALL_CREATE_DISTRIB=ON \
	-DENABLE_NEON=ON \
	-DENABLE_VFPV3=ON \
	-DOPENCV_ENABLE_NONFREE=ON \
	-DWITH_TBB=ON \
	-DWITH_EIGEN=ON

# Build
make -j$(cat /proc/cpuinfo | grep -c 'processor')

# Install is required, otherwise cpack will fail to find some libraries
sudo make install
cpack -G DEB
sudo make uninstall

echo "To install run: sudo dpkg -i OpenCV-*.deb"