QT creator+OpenCV2.4.2+MinGW 在windows下开发环境配置

下载必备软件

·QT SDK for Open Source C++ development on Windows（在google上搜索一下官方网站即可找到）

·OpenCV 2.4.2：目前最新的OpenCV版本，安装之后的目录下面有源码和个版本的lib和dll，不过为避免出现问题，还是自己编译吧。

http://sourceforge.net/projects/opencvlibrary/files/opencv-win

·Cmake 2.8.9

Google一下即可查到下载链接。

安装软件

安装QT SDK：

安装的时候会弹出一个错误的提示窗口，一直没弄明白，直接忽略过去了，好像也没有什么影响。需要注意的是：QT新建工程的时候选择桌面开发选项，而不是塞班开发选项。建完工程后，在【项目】那编译器选择：MinGW4.4。另外，重新编译OpenCV要使用MinGW4.4编译。把 “<Qt_directory>\mingw\bin”添加到环境变量PATH中。

注意，<Qt_directory>为安装后的QT目录所在路径，环境变量名需设为path，如果变量值已有其他路径，可以在路径后面加上英文的分号（;）,然后可以添加新的路径，如E:\software\QT\mingw\bin。

如果没有正确地将“<Qt_directory>\mingw\bin”添加到环境变量PATH中，则在下面用Cmake编译OpenCV源码时会出错。

编译OpenCV

Steps to build OpenCV 2.3.1 with Qt and MinGW:

1. Install Qt SDK with the C++ compiler option (MinGW). You can download it here.

2. Add “D:\QtSDK\mingw\bin” to the system PATH.

3. Download and install CMake (2.8.5).

4. Download and install OpenCV2.3.1 (OpenCV-2.3.1-win-superpack.exe).

5. Run CMake GUI.

6. Set the source code: “D:\OpenCV2.3.1_src"

7. Set where to build binaries to: “D:\OpenCV2.3.1_out”.

8. Press Configure

9. Let CMake create the new folder.

10. Specify the generator: MinGW Makefiles.

11. Select “Specify Native Compilers” and click Next.

12. For C set: “D:\QtSDK\mingw\bin\gcc.exe”

13. For C++ set: “D:\QtSDK\mingw\bin\g++.exe”

14. Click Finish

15. In the configuration screen type in “DEBUG” (or “RELEASE” if you want to build a release version) for CMAKE_BUILD_TYPE. Check BUILD_EXAMPLES if you want. Check WITH_QT.

16. Click configure again.

17. The configure screen will make you specify the "CUDA_TOOLKIT_ROOT_DIR" path.

set CUDA_TOOLKIT_ROOT_DIR to : "D:/QtSDK/Desktop/Qt/4.7.3/mingw/bin"

18. Click configure again. Click generate. Close CMake.

19. Go to "D:\OpenCV2.3.1_out" DIR and type “mingw32-make” and hit enter (this might take some time).

运行图

20. Then type “mingw32-make install” and hit enter again.

21. Work done

 Add :

        INCLUDEPATH+=D:/OpenCV2.3.1/include

        LIBS+=D:/OpenCV2.3.1/bin/*.dll

    Or

        INCLUDEPATH+=E:\OpenCV-2.3.1\MinGW\install\include

        LIBS+=D:\OpenCV2.3.1\lib\libopencv_core231d.dll.a\

        D:\OpenCV2.3.1\lib\libopencv_highgui231d.dll.a\

        D:\OpenCV2.3.1\lib\libopencv_imgproc231d.dll.a\

        D:\OpenCV2.3.1\lib\libopencv_ml231.dll.a

to Qt's "pro" file, then you can work on.

等待编译，结束后需要的东西都在install文件夹里面了。把<build_directory>\install\bin添加到环境变量PATH里面，例如E:\software\OpenCV2.4.2\opencv\MinGW\install\bin;

Qt Creator配置OpenCV

只需要修改.pro文件，添加include和lib。例如：

QT creator+OpenCV2.4.2+MinGW 在windows下开发环境配置

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