C++ OpenCV 3.x 只包含一个库 - opencv_world.lib？
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OpenCV 3.x only contains one lib - opencv_world.lib?
提问by marcman
I'm trying to update my OpenCV version from 2.4.9 to the newest version, 3.10. I downloaded the Windows binary from here, having navigated there from the official OpenCV site. I then ran the installer, but the opencv\build\x64\vc12\libdirectory only contained a couple files:
我正在尝试将我的 OpenCV 版本从 2.4.9 更新到最新版本 3.10。我从这里下载了 Windows 二进制文件，从官方 OpenCV 站点导航到那里。然后我运行了安装程序，但该opencv\build\x64\vc12\lib目录只包含几个文件：
- opencv_world310.lib
- opencv_world310d.lib
- OpenCVConfig.cmake
- OpenCVModules.cmake
- OpenCVModules-debug.cmake
- OpenCVModules-release.cmake
- opencv_world310.lib
- opencv_world310d.lib
- OpenCVConfig.cmake
- OpenCVModules.cmake
- OpenCVModules-debug.cmake
- OpenCVModules-release.cmake
In the past editions though, this directory used to contain the required libraries, like opencv_calib3d249d.lib, opencv_contrib249d.lib, opencv_core249d.lib, etc.
但是在过去的版本中，这个目录用于包含所需的库，如 opencv_calib3d249d.lib、opencv_contrib249d.lib、opencv_core249d.lib 等。
I imagine there's something I need to do with CMake, but I can't seem to figure it out--the old binaries used to compile everything for you. I also can't find anything in the documentation explaining this. Has anyone else come across this recently and have a solution?
我想我需要用 CMake 做一些事情，但我似乎无法弄清楚 - 用于为您编译所有内容的旧二进制文件。我也无法在解释此的文档中找到任何内容。最近有没有其他人遇到过这个问题并有解决方案？
回答by herohuyongtao
By default, the binary version of OpenCV-3.x doesn't contain the separate libs like opencv_core.lib. Instead, these modules are integrated in opencv_world.lib, so you only need to link to it.
默认情况下，OpenCV-3.x 的二进制版本不包含单独的库，如opencv_core.lib. 相反，这些模块集成在 中opencv_world.lib，因此您只需链接到它。
On the other hand, if you do want separate libs, i.e. uniform APIs with OpenCV-2.x, you can build it yourself using CMake by enable the libs that you want. Like
另一方面，如果您确实需要单独的库，即使用 OpenCV-2.x 的统一 API，您可以通过启用所需的库来使用 CMake 自己构建它。喜欢
This will generate opencv_core.lib.
这将生成opencv_core.lib.
回答by banderlog013
Or run cmake with -D BUILD_opencv_world=OFFkey
或使用-D BUILD_opencv_world=OFF密钥运行 cmake
