opencv - 重组代码后链接到OpenCV时出错

Question

我刚刚重新组织了我的代码(以前曾工作过)，现在在运行我的可执行文件时收到一条错误消息:The program can't start because opencv_core230d.dll is missing from your computer.该错误是准确的，我只有适用于OpenCV的.lib库文件，但以前却有效，但我没有认为这应该是一个问题，对吗？

cmake文件的摘录为:

FIND_PACKAGE( OpenCV REQUIRED )

# Define LIBRARY and SRC_FILES to create my library
add_library(${LIBRARY} ${SRC_FILES})
target_link_libraries(${LIBRARY} ${OpenCV_LIBS} )

# Define appName and appFile to create application,
# and link to my library and OpenCV
add_executable(${appName} ${appFile})
target_link_libraries(${appName} ${LIBRARY} ${OpenCV_LIBS})

我是否在做任何明显错误的事情，否则可能导致此错误？

编辑:我现在将此问题简化为一个最小的示例。在一个目录测试中，我有两个文件:testApp.cpp和CMakeLists.txt，如下所示:

testApp.cpp

#include <opencv2/opencv.hpp>

int main(int argc, char* argv[])
{
    cv::namedWindow("Test");
    cv::waitKey(0);
    cv::destroyAllWindows();

    return 0;
}

CMakeLists.txt

cmake_minimum_required(VERSION 2.6)
project(test)

FIND_PACKAGE( OpenCV REQUIRED )

add_executable(appName testApp.cpp)
target_link_libraries(appName ${OpenCV_LIBS})
message(STATUS "Linking testapp to: ${OpenCV_LIBS}")

与以前一样的错误:opencv_highgui230d.dll is missing.

Answer 1

问题在于环境变量 PATH 并不指向OpenCV DLL所在的位置。在OpenCV目录中搜索，如果找不到，则需要重新安装OpenCV。