解决办法：undefined reference to `cv::imread(std::__cxx11::basic_

 CMakeLists.txt文件

#最低版本要求
cmake_minimum_required(VERSION 3.10)

project(img_operation)

# 找包
find_package(OpenCV REQUIRED)

if(OpenCV_FOUND)
    message(STATUS "Found OpenCV")
    message(STATUS "Opencv Version:${OpenCV_VERSION}")
    message(STATUS "OpenCV Library: ${OpenCV_LIBS}")
    message(STATUS "Include path: ${OpenCV_INCLUDE_PATH}")
else()
    message(FATAL_ERROT "Could not find OpenCV library")
endif()

#添加可执行文件
add_executable(test_image src/img_operation.cpp)

#添加头文件
target_include_directories(test_image PRIVATE ${OpenCV_INCLUDE_DIRS})
#添加链接库
target_link_libraries(test_image ${OpenCV_LIBS})


   

遇到的这种问题，在保证opencv配置好的情况下，直接修改一下CMakeList.txt文件，调整一下顺序

多个cpp文件这么写

#添加头文件
include_directories(${OpenCV_INCLUDE_DIRS} PRIVATE ${OpenCV_INCLUDE_DIRS})
#添加链接库
link_libraries(${OpenCV_LIBS} ${OpenCV_LIBS})

#添加可执行文件
add_executable(test_color src/color_format.cpp)
add_executable(test_filtering src/filtering.cpp)