qt5.3.1+opencv2.4.9編譯環境的搭建

到官網下載qt-opensource-windows-x86-mingw482_opengl-5.3.1.exe文件，執行該文件，選擇默認安裝便可實現QT的安裝（安裝在C盤的根目錄下），該文件封裝好了Qt libraries、Qt Creator，其中Qt Creator爲3.1.2版本。

到官網http://opencv.org/downloads.html下載OpenCV for Windows2.4.9版本——opencv-2.4.9.exe。執行該文件，把它解壓到適當的目錄下便可，我是把它放到了c盤的根目錄下，即c:\opencv。

 

在http://www.cmake.org/cmake/resources/software.html下載cmake-3.0.1-win32-x86.exe文件。安裝cmake，安裝在C:\CMake目錄下。

 

設置系統的環境變量，即把C:\Qt\Qt5.3.1\Tools\MinGW\bin加入系統的Path環境變量中，由於在CMake編譯過程當中會用到該目錄下的庫。

 

在桌面上點擊CMake(cmake-gui)圖標，執行CMake，在Where is the source code欄和Where to build thebinaries欄中分別C:/opencv/soureces爲opencv和C:/opencv/MinGW。C:/opencv/MinGW爲編譯後庫文件所存放的目錄，須要本身建立該目錄。而後點擊configure按鈕，打開新的窗口，在Specify the generator for this project下選擇MinGW Makefiles，而後選擇Specify native compilers，點擊Next按鈕，打開新的窗口，在C一欄中填寫C:/Qt/Qt5.3.1/Tools/mingw482_32/bin/gcc.exe，在C++一欄中填寫C:/Qt/Qt5.3.1/Tools/mingw482_32/bin/g++.exe，Fortran不填寫。而後點擊Finish按鈕，開始配置，這時會出現以下的相似錯誤提示：

CMake Error: CMake was unable to find abuild program corresponding to "MinGW Makefiles".  CMAKE_MAKE_PROGRAM is not set.  You probably need to select a different buildtool.

CMake Error: CMake was unable to find abuild program corresponding to "MinGW Makefiles".  CMAKE_MAKE_PROGRAM is not set.  You probably need to select a different buildtool.

CMake Error: Error required internal CMakevariable not set, cmake may be not be built correctly.

Missing variable is:

CMAKE_CXX_COMPILER_ENV_VAR

CMake Error: Could not find cmake modulefile: C:/opencv/MinGW/CMakeFiles/3.0.1/CMakeCXXCompiler.cmake

CMake Error: Error required internal CMakevariable not set, cmake may be not be built correctly.

Missing variable is:

CMAKE_C_COMPILER_ENV_VAR

CMake Error: Could not find cmake modulefile: C:/opencv/MinGW/CMakeFiles/3.0.1/CMakeCCompiler.cmake

Configuring incomplete, errors occurred!

找到Name爲CMAKE_MAKE_PROGRAM的一項，把它的Value填寫爲C:/Qt/Qt5.3.1/Tools/mingw482_32/bin/mingw32-make.exe便可。再次點擊Configure，這時不會提示任何錯誤，代表配置成功。

咱們還須要把QT加上，找到WITH，把它下面的WITH_QT和WITH_OPENGL選上，再次Configure。這時會出現相似下面的錯誤提示：

CMake Error atC:/CMake/share/cmake-3.0/Modules/FindQt4.cmake:1316 (message):

 Found unsuitable Qt version "" from NOTFOUND, this coderequires Qt 4.x

Call Stack (most recent call first):

 cmake/OpenCVFindLibsGUI.cmake:34 (find_package)

 CMakeLists.txt:466 (include)

找到QT_QMAKE_EXECUTABLE，它的值填寫爲：C:/Qt/Qt5.3.1/5.3/mingw482_32/bin/qmake.exe

找到QT_MKSPECS_DIR，它的值填寫爲：C:/Qt/Qt5.3.1/5.3/mingw482_32/mkspecs

找到QT_QTCORE_LIBRARY_DEBUG，它的值填寫爲：C:/Qt/Qt5.3.1/5.3/mingw482_32/bin/Qt5Cored.dll

找到QT_QTCORE_LIBRARY_RELEASE，它的值填寫爲C:/Qt/Qt5.3.1/5.3/mingw482_32/bin/Qt5Core.dll

找到QT_QTCORE_INCLUDE_DIR，它的值填寫爲C:/Qt/Qt5.3.1/5.3/mingw482_32/include/QtCore/5.3.1/QtCore

再次點擊Configure，這時會出現相似下面的錯誤提示：

CMake Error atC:/CMake/share/cmake-3.0/Modules/FindQt4.cmake:1316 (message):

 Found unsuitable Qt version "5.3.1" from

 C:/Qt/Qt5.3.1/5.3/mingw482_32/bin/qmake.exe, this code requires Qt 4.x

Call Stack (most recent call first):

 cmake/OpenCVFindLibsGUI.cmake:34 (find_package)

 CMakeLists.txt:466 (include)

在Ungrouped Entries下找到Qt5Concurrent_DIR，Qt5Core_DIR，Qt5Gui_DIR，Qt5Test_DIR，Qt5Widgets_DIR，Qt5OpenGL_DIR，它們的Value分別填寫爲：

C:/Qt/Qt5.3.1/5.3/mingw482_32/lib/cmake/Qt5Concurrent

C:/Qt/Qt5.3.1/5.3/mingw482_32/lib/cmake/Qt5Core

C:/Qt/Qt5.3.1/5.3/mingw482_32/lib/cmake/Qt5Gui

C:/Qt/Qt5.3.1/5.3/mingw482_32/lib/cmake/Qt5Test

C:/Qt/Qt5.3.1/5.3/mingw482_32/lib/cmake/Qt5Widgets

C:/Qt/Qt5.3.1/5.3/mingw482_32/lib/cmake/Qt5OpenGL

再次Configure，這時配置完成，不會出現任何錯誤提示。雖然會有許多警告，如This warning is for project developers.  Use -Wno-dev to suppress it.，但不用去管，按Generate。Generate完成後，關閉CMake窗口。

打開系統的命令終端，進入C:\opencv\MinGW目錄，執行mingw32-make命令，這須要一段時間，該命令執行完後，再執行mingw32-make install命令。這樣可用於Qt的opencv庫文件就生成了。

再次添加系統的Path環境變量，內容爲：c:\Qt\Qt5.3.1\5.3\mingw482_32\bin;c:\opencv\MinGW\bin。

之後咱們用Qt Creator編譯opencv的時候，在建立一個新工程後，還須要在該工程的工程文件.pro文件內添加下列語句：

INCLUDEPATH+=c:\opencv\build\include\opencv\

c:\opencv\build\include\opencv2\

       c:\opencv\build\include

 

LIBS+=c:\opencv\MinGW\lib\libopencv_calib3d249.dll.a\

  c:\opencv\MinGW\lib\libopencv_contrib249.dll.a\

  c:\opencv\MinGW\lib\libopencv_core249.dll.a\

  c:\opencv\MinGW\lib\libopencv_features2d249.dll.a\

  c:\opencv\MinGW\lib\libopencv_flann249.dll.a\

  c:\opencv\MinGW\lib\libopencv_gpu249.dll.a\

  c:\opencv\MinGW\lib\libopencv_highgui249.dll.a\

  c:\opencv\MinGW\lib\libopencv_imgproc249.dll.a\

  c:\opencv\MinGW\lib\libopencv_legacy249.dll.a\

  c:\opencv\MinGW\lib\libopencv_ml249.dll.a\

  c:\opencv\MinGW\lib\libopencv_objdetect249.dll.a\

  c:\opencv\MinGW\lib\libopencv_video249.dll.a

 

完成！