CMake 编译 opencv 库

用CMake编译opencv3.1.0 按照

Win10+QT5.7.1搭建opencv开发环境

http://www.cnblogs.com/TooyLee/p/6438070.html

CMake配置过程中出现如下错误：

CMake Error: CMake was unable to find a build program corresponding to "MinGW Makefiles". 

CMAKE_MAKE_PROGRAM is not set. You probably need to select a different build tool.

解决方案如下：

将CMAKE_MAKE_PROGRAM项后面的路径设置为：D:\qt\Qt5.6.2\Tools\mingw492_32\bin\mingw32-make.exe，

其他配置参照

Win7下qt5.3.1+opencv2.4.9编译环境的搭建

blog.csdn.net/zhaocj/article/details/38944037

摘录部分如下：

我们还需要把QT加上，找到WITH，把它下面的WITH_QT和WITH_OPENGL选上，再次Configure。这时会出现类似下面的错误提示：

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，它的值填写为：C:/Qt/Qt5.3.1/5.3/mingw482_32/bin/qmake.exe

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

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

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

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

再次点击Configure，这时会出现类似下面的错误提示：

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，它们的Value分别填写为：

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，这时配置完成，不会出现任何错误提示。虽然会有许多警告，如This warning is for project developers.  Use -Wno-dev to suppress it.，但不用去管，按Generate。Generate完成后，关闭CMake窗口。

最后成功如下图示：

注意：将mingw32-make.exe的路径配置到系统环境变量path中。

然后按照步骤编译，最后可生成opencv库。编译opencv库过程：