Installation by Using git-bash (version>=2.14.1) and cmake (version >=3.9.1){#tutorial_windows_gitbash_build}

-# You must download [cmake (version >=3.9.1)](https://cmake.org) and install it. You must add cmake to PATH variable during installation

-# You must install [git-bash (version>=2.14.1)](https://git-for-windows.github.io/). Don't add git to PATH variable during installation

-# Run git-bash. You observe a command line window.

Suppose you want to build opencv and opencv_contrib in c:/lib

-# In git command line enter following command (if folder does not exist) :

@code{.bash}

mkdir /c/lib

cd /c/lib

-# save this script with name installOCV.sh in c:/lib

@code{.bash}

#!/bin/bash -e

myRepo=$(pwd)

CMAKE_CONFIG_GENERATOR="Visual Studio 14 2015 Win64"

if [ ! -d "$myRepo/opencv" ]; then

echo "clonning opencv"

git clone https://github.com/opencv/opencv.git

mkdir Build

mkdir Build/opencv

mkdir Install/opencv

else

cd opencv

git pull --rebase

cd ..

fi

if [ ! -d "$myRepo/opencv_contrib" ]; then

echo "clonning opencv_contrib"

git clone https://github.com/opencv/opencv_contrib.git

mkdir Build

mkdir Build/opencv_contrib

else

cd opencv_contrib

git pull --rebase

cd ..

fi

RepoSource=opencv

cd Build/$RepoSource

CMAKE_OPTIONS='-DBUILD_PERF_TESTS:BOOL=OFF -DBUILD_TESTS:BOOL=OFF -DBUILD_DOCS:BOOL=OFF -DWITH_CUDA:BOOL=OFF -DBUILD_EXAMPLES:BOOL=OFF -DINSTALL_CREATE_DISTRIB=ON'

cmake -G"$CMAKE_CONFIG_GENERATOR" $CMAKE_OPTIONS -DOPENCV_EXTRA_MODULES_PATH="$myRepo"/opencv_contrib/modules -DCMAKE_INSTALL_PREFIX="$myRepo"/install/"$RepoSource" "$myRepo/$RepoSource"

echo "************************* $Source_DIR -->debug"

cmake --build . --config debug

echo "************************* $Source_DIR -->release"

cmake --build . --config release

cmake --build . --target install --config release

cmake --build . --target install --config debug

cd ..

In this script I suppose you use VS 2015 in 64 bits

@code{.bash}

CMAKE_CONFIG_GENERATOR="Visual Studio 14 2015 Win64"

and opencv will be installed in c:/lib/install

@code{.bash}

-DCMAKE_INSTALL_PREFIX="$myRepo"/install/"$RepoSource" "$myRepo/$RepoSource"

with no Perf tests, no tests, no doc, no CUDA and no example

@code{.bash}

CMAKE_OPTIONS='-DBUILD_PERF_TESTS:BOOL=OFF -DBUILD_TESTS:BOOL=OFF -DBUILD_DOCS:BOOL=OFF -DWITH_CUDA:BOOL=OFF -DBUILD_EXAMPLES:BOOL=OFF'

-# In git command line enter following command :

@code{.bash}

./installOCV.sh

-# Drink a coffee or two... opencv is ready : That's all!

-# Next time you run this script, opencv and opencv_contrib will be updated and rebuild