cmake_minimum_required(VERSION 2.8.3) project(lineit) set(CMAKE_CXX_STANDARD 11) # change the path below to your opencv directory set(OpenCV_DIR /home/sieroy/桌面/lib/opencv-4.x/build) find_package(OpenCV REQUIRED) include_directories(${OpenCV_INCLUDE_DIRS}) add_executable(${PROJECT_NAME} src/lineit.cpp) target_Link_libraries(${PROJECT_NAME} ${OpenCV_LIBS})