linux下C++链接opencv时g++与cmake两种方法的使用

g++链接opencv时报错：
undefined reference to symbol ’ zN2cv6imreadERKNSt7__cxx1112basic stringIcst11char traitsIcEsaICEEEi’
/usr/lib/aarch64-linux-gnu/libopencv imgcodecs.so.4.5: error addingsymbols: Dso missing from command linecollect2:error:ldreturned 1exit status

也可以改用cmakelists.txt进行编译
首先创建cmakelists.txt，内容如下

cmake_minimum_required(VERSION 3.0)
project(YourProjectName)

# 查找OpenCV库
find_package(OpenCV REQUIRED)

# 将源代码添加到此项目的可执行文件。
add_executable(YourExecutableName main.cpp)

# 链接OpenCV库
target_link_libraries(YourExecutableName ${OpenCV_LIBS})

然后

mkdir build
cd build
cmake ..
make