1. Ubuntu 下编译 opencv 源代码（For linux & Android）

1.1 下载 opencv 源码

$ sudo apt-get install cmake
$ sudo apt-get install cmake-qt-gui

1.3 安装 ubuntu 下必要的库文件：

sudo apt-get install pkg-config libgtk2.0-dev libjpeg libtiff libjasper libpng zlib
openexr libjpeg-dev ffmpeg libgstreamer libv4l libv4l-0 libv4l-dev libxine unicap
libavformat-dev libswscale-dev swig libjpeg-progs build-essential python-numpy

可能会出现依赖包libjasper-dev无法安装的情况，出现错误提示：
E: Unable to locate package libjasper-dev
　
此时，可以分为两步完成：
(1) 首先安装除了libjasper-dev之外的所有包：
sudo apt-get install python-dev python-numpy libtbb2 libtbb-dev libjpeg-dev libpng-dev libtiff-dev libdc1394-22-dev
　
(2) 然后单独安装libjasper-dev包：
sudo add-apt-repository "deb http://security.ubuntu.com/ubuntu xenial-security main"
sudo apt update
sudo apt install libjasper1 libjasper-dev

1.4 使用 Cmake 进行配置：

$ cmake-gui

（2）进行配置：

1.5 编译 opencv 生成 linux 下的 opencv 库文件

$ cd ~/2.2opencv/opencv-build/
~/2.2opencv/opencv-build$ make

~/2.2opencv/opencv-build$ make install

编译中如果总是出错，有可能是选择的 Opencv 版本与 Ubuntu 中相关环境的版本不匹配，

所以最好选择 poencv2.2 或者是 opencv2.0

1.6 测试 linux Opencv 例程

$ cd /home/sunny/2.2opencv/OpenCV-2.2.0/samples/c
/2.2opencv/OpenCV-2.2.0/samples/c$ bash ./build_all.sh
/2.2opencv/OpenCV-2.2.0/samples/c$ ./facedetect

1.7 Opencv For Android 的编译

1.7.1 安装 ndk：

1.7.2 安装 Android SDK

1.7.3 编译 opencv 中关于 android 相关的源码

1.7.3.1 静态库的编译

~$ cd 2.2opencv/OpenCV-2.2.0/android/
~/2.2opencv/OpenCV-2.2.0/android$ mkdir build
~/2.2opencv/OpenCV-2.2.0/android$ cd build/
~/2.2opencv/OpenCV-2.2.0/android/build$
~/2.2opencv/OpenCV-2.2.0/android/build$ cmake .. 
~/2.2opencv/OpenCV-2.2.0/android/build$ make

1.7.3.2 共享库的编译

~$ cd 2.2opencv/OpenCV-2.2.0/android/android-jni
~/2.2opencv/OpenCV-2.2.0/android/android-jni$ make

#location of android-opencv.mk file that was generated by the cmake build
#of opencv for android
OPENCV_CONFIG=../build/android-opencv.mk

#the root directory of the crystax r4 ndk - ndk-build should be in this dir
#you can download the ndk from http://www.crystax.net/android/ndk-r4.php
ANDROID_NDK_ROOT=$(HOME)/android-ndk-r4-crystax

#define only armeabi-v7a to make the final apk smaller or armeabi
ARM_TARGETS="armeabi armeabi-v7a"

~$ sudo apt-get install ant1.8

~/2.2opencv/OpenCV-2.2.0/android/android-jni$ sh ./project_create.sh
~/2.2opencv/OpenCV-2.2.0/android/android-jni$ ant compile

Opencv-2.2.0 _
    |_android_
        |_android-jni
        |_apps
        |_build

~$ cd 2.2opencv/OpenCV-2.2.0/android/apps/CVCamera/
~/2.2opencv/OpenCV-2.2.0/android/apps/CVCamera$ sh build.sh
~/2.2opencv/OpenCV-2.2.0/android/apps/CVCamera$ make

~/2.2opencv/OpenCV-2.2.0/android/apps/CVCamera$sh project_create.sh
~/2.2opencv/OpenCV-2.2.0/android/apps/CVCamera$ ant debug

~/2.2opencv/OpenCV-2.2.0/android/apps/CVCamera$ ant install

#include<highgui.h>
int main()
{
    int c;
    IplImage *img;
    CvCapture* capture = cvCaptureFromCAM(-1);
    cvNamedWindow("mainWin", CV_WINDOW_AUTOSIZE);
    cvMoveWindow("mainWin", 50, 50);
    while(1)
    {
        img=cvQueryFrame(capture);
        cvShowImage("mainWin", img );
        c=cvWaitKey(10);
        
        //按 ESC 键离开
        if(c == 27)
            break;
    }
    cvReleaseImage(&img);
    cvDestroyWindow("mainWin");
    return 0;
}

2.3 配置工程的头文件和链接库

然后配置路径：

#include <highgui.h>
int main()
{
    int c;
    IplImage *img;
    CvCapture* capture = cvCaptureFromCAM(-1);//此处-1 代表自动检测
    cvNamedWindow("mainWin", CV_WINDOW_AUTOSIZE);
    cvMoveWindow("mainWin", 50, 50);
    while(1)
    {
        img=cvQueryFrame(capture);
        cvShowImage("mainWin", img );
        c=cvWaitKey(10);
        if(c == 27)
            break;
    }
    cvReleaseImage(&img);
    cvDestroyWindow("mainWin");
    return 0;
}

但是此时编译还不能成功，因为 codeblocks 的编译器还不知道 opencv 的头文件和相应的库文件的位置，在编译的时候就无法进行 include 的链接库文件。