g++ 编译 OpenCV
g++ main.cpp -I D:/software/opencv/opencv/build/x64/mingw/install/include
-L D:/software/opencv/opencv/build/x64/mingw/install/x64/mingw/lib
-l libopencv_calib3d450 -l libopencv_core450 -l libopencv_dnn450 -l libopencv_features2d450
-l libopencv_flann450 -l libopencv_gapi450 -l libopencv_highgui450 -l libopencv_imgcodecs450
-l libopencv_imgproc450 -l libopencv_ml450 -l libopencv_objdetect450 -l libopencv_photo450
-l libopencv_stitching450 -l libopencv_video450 -l libopencv_videoio450 -l libopencv_world450
-o main.exe
Ubuntu可以用 pkg_config
查看OpenCV路径和库
$ pkg-config --cflags --libs opencv
-I/usr/local/include/opencv
-I/usr/local/include
-L/usr/local/lib
-lopencv_dnn -lopencv_ml -lopencv_objdetect
-lopencv_shape -lopencv_stitching -lopencv_superres
-lopencv_videostab -lopencv_calib3d -lopencv_features2d
-lopencv_highgui -lopencv_videoio -lopencv_imgcodecs
-lopencv_video -lopencv_photo -lopencv_imgproc
-lopencv_flann -lopencv_viz -lopencv_core
g++ main.cpp -o main `pkg-config --cflags --libs opencv`CMake 编译 OpenCV
find_package(OpenCV REQUIRED)
message("${OpenCV_INCLUDE_DIRS}")
# /usr/local/include
message("${OpenCV_LIBRARY_DIRS}")
# /usr/local/include/opencv
message("${OpenCV_LIBS}")
# opencv_calib3d;opencv_core;...
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
set(CMAKE_BUILD_TYPE Debug)
# 头文件目录
include_directories(${OpenCV_INCLUDE_DIRS})
# 库文件目录
link_directories(${OpenCV_LIBRARY_DIRS})
add_executable(main main.cpp)
#链接
target_link_libraries(main ${OpenCV_LIBS})
