构建opencv时出现cmake错误
我正在尝试使用 cmake 构建 opencv，但遇到了问题。
我已将Windows opencv 2.3.1下载到C:/Users/chris/opencv。我打开 CMake GUI（CMake 2.8.5 版本）并将源目录放置为 C:/Users/chris/opencv/modules 并将“在何处构建二进制文件”放置在 C:/temp/opencv_binaries
我点击 Configure 并选择 Visual Studio 2010。然后我再次点击 Configure 并得到以下错误输出：
CMake Error at calib3d/CMakeLists.txt:1 (define_opencv_module):
Unknown CMake command "define_opencv_module".
CMake Warning (dev) in CMakeLists.txt:
No cmake_minimum_required command is present. A line of code such as
cmake_minimum_required(VERSION 2.8)
should be added at the top of the file. The version specified may be lower
if you wish to support older CMake versions for this project. For more
information run "cmake --help-policy CMP0000".
This warning is for project developers. Use -Wno-dev to suppress it.
Configuring incomplete, errors occurred!
是什么原因？我应该怎么做才能解决这个问题？
I am trying to build opencv with cmake and am running into issues.
I have downloaded the Windows opencv 2.3.1 to C:/Users/chris/opencv. I open up the CMake GUI (2.8.5 version of CMake) and put the source directory as C:/Users/chris/opencv/modules and the "Where to build the binaries" at C:/temp/opencv_binaries
I hit Configure and chose Visual Studio 2010. I then hit Configure again and get the following error output:
CMake Error at calib3d/CMakeLists.txt:1 (define_opencv_module):
Unknown CMake command "define_opencv_module".
CMake Warning (dev) in CMakeLists.txt:
No cmake_minimum_required command is present. A line of code such as
cmake_minimum_required(VERSION 2.8)
should be added at the top of the file. The version specified may be lower
if you wish to support older CMake versions for this project. For more
information run "cmake --help-policy CMP0000".
This warning is for project developers. Use -Wno-dev to suppress it.
Configuring incomplete, errors occurred!
What gives? What should I do to fix this?
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除非最近发生更改，否则源目录应为 C:/Users/chris/opencv/ - 它将是包含 CMakeLists.txt 文件的最高级别目录。
Unless it has changed recently, the source directory should be
C:/Users/chris/opencv/- it will be the highest-level directory with a CMakeLists.txt file in it.要打开
-Wno-dev，您只需选择Options-> CMake GUI 菜单中的抑制开发警告 (-Wno-dev)。To turn
-Wno-devon you just need to selectOptions->Suppress dev Warnings (-Wno-dev)in the menu of CMake GUI.您的 CMakeLists.txt 文件的内容是什么？
为了避免出现警告，请将“cmake_minimum_required(VERSION 2.8)”插入 CMakeLists.txt 的第一行
what is the content of your CMakeLists.txt file?
for avoiding the warning, insert "cmake_minimum_required(VERSION 2.8)" into the first line of your CMakeLists.txt