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我的环境：

  • 视窗 7 64
  • CMake 2.8.10.2
  • Opencv 2.4.4
  • 视觉工作室速成版 2012

我的问题：

我有一个使用 Opencv 并在 vs11 下构建的 CMake 项目。一切都适用于预先构建的二进制文件（在我的例子中来自 c:/opencv/build）。我想更改一些 Opencv 设置，所以我必须从源代码（在 c:/opencv/build2 中）构建它。一切都在 c:/opencv/built2 中正确构建和安装，但我的 IDE 出现此错误：

错误 LNK1104：无法打开文件 'C:\opencv\build2\lib\Debug\Debug\opencv_objdetect244d.lib'

确实，没有这样的文件。似乎我的 CMakeLists.txt 脚本通过在每次调用中添加 Debug\（或 Release）子目录来破坏 OpenCV_LIBS 变量：

MESSAGE ( STATUS "OpenCV_LIBS = ${OpenCV_LIBS}" )
FIND_PACKAGE ( OpenCV COMPONENTS core highgui imgproc objdetect REQUIRED )
MESSAGE ( STATUS "OpenCV_LIBS = ${OpenCV_LIBS}" )
FIND_PACKAGE ( OpenCV COMPONENTS core highgui imgproc objdetect REQUIRED )
MESSAGE ( STATUS "OpenCV_LIBS = ${OpenCV_LIBS}" )
FIND_PACKAGE ( OpenCV COMPONENTS core highgui imgproc objdetect REQUIRED )
MESSAGE ( STATUS "OpenCV_LIBS = ${OpenCV_LIBS}" )

输出：

OpenCV_LIBS = 调试；C:/opencv/build2/lib/Debug/opencv_contrib244d.lib;(...)

OpenCV_LIBS = 调试；C:/opencv/build2/lib/Debug/Debug/opencv_objdetect244d.lib;(...)

OpenCV_LIBS = debug;C:/opencv/build2/lib/Debug/Debug/Debug/opencv_objdetect244d.lib;(...)

OpenCV_LIBS = debug;C:/opencv/build2/lib/Debug/Debug/Debug/Debug/opencv_objdetect244d.lib;(...)

OpenCV_LIBS = debug;C:/opencv/build2/lib/Debug/Debug/Debug/Debug/Debug/opencv_objdetect244d.lib;(...)

我的 CMake 脚本有问题吗？

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1 回答 1

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好的，似乎在连续调用中多次包含变量时OpenCVConfig.cmake会破坏变量。OpenCV_LIBSFIND_PACKAGE()

一个快速的解决方法是添加FORCE到第91-94行OpenCVConfig.cmake：

# Provide the libs directories to the caller
set(OpenCV_LIB_DIR_OPT "C:/opencv/build2/lib" CACHE PATH "Path where release OpenCV libraries are located" FORCE)
set(OpenCV_LIB_DIR_DBG "C:/opencv/build2/lib" CACHE PATH "Path where debug OpenCV libraries are located" FORCE)
set(OpenCV_3RDPARTY_LIB_DIR_OPT "C:/opencv/build2/3rdparty/lib" CACHE PATH "Path where release 3rdpaty OpenCV dependencies are located" FORCE)
set(OpenCV_3RDPARTY_LIB_DIR_DBG "C:/opencv/build2/3rdparty/lib" CACHE PATH "Path where debug 3rdpaty OpenCV dependencies are located" FORCE)

要修改的文件是C:\opencv\cmake\templates\OpenCVConfig.cmake.in.

然后重建/重新编译/重新安装 OpenCV，然后是你自己的项目。

于 2013-03-08T13:41:03.573 回答