Ubuntu 16.04编译安装最新的OpenCV3.2

获取源代码

Shell

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

1	$ git clone https://github.com/opencv/opencv.git

安装依赖库

Shell

#借助系统自带的opencv简化依赖安装步骤
$ sudo apt-get install libopencv-dev

1 2	#借助系统自带的opencv简化依赖安装步骤 $ sudo apt-get install libopencv-dev

编译源代码

Shell

$ cd opencv

$ mkdir build

$ cd build

$ cmake ..

$ make -j 10

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$ cd opencv   $ mkdir build   $ cd build   $ cmake ..   $ make -j 10

替换已经安装的版本

Shell

$ sudo make install

1	$ sudo make install

编译出错的处理
如果执行cmake时候出现如下错误信息

Shell

CMake Error at CMakeLists.txt:11 (message):

FATAL: In-source builds are not allowed.

You should create separate directory for build files.

-- Configuring incomplete, errors occurred!

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CMake Error at CMakeLists.txt:11 (message):        FATAL: In-source builds are not allowed.            You should create separate directory for build files.       -- Configuring incomplete, errors occurred!

则应该是在代码根目录下直接执行过cmake，导致根目录下生成了CMakeCache.txt，需要删除CMakeCache.txt再次执行编译即可。