linux环境下编译运行OpenCV程序的两种方法

一、命令行Command Line

g++ opencv_test.cpp -o opencv_test `pkg-config --cflags --libs opencv`
./opencv_test test.jpg

备注：pkg-config选项
--cflags 它是用来指定程序在编译时所需要头文件所在的目录
--libs 则是指定程序在链接时所需要的动态链接库的目录

二、CMake工具编译

在程序同目录下创建CMakeLists.txt

#文件地址(下载源码安装包中)：/opencv-3.4.1/samples/cpp/example_cmake/

# cmake needs this line
cmake_minimum_required(VERSION 2.8)

# Define project name
project(opencv_example_project)

# Find OpenCV, you may need to set OpenCV_DIR variable
# to the absolute path to the directory containing OpenCVConfig.cmake file
# via the command line or GUI
find_package(OpenCV REQUIRED)

# If the package has been found, several variables will
# be set, you can find the full list with descriptions
# in the OpenCVConfig.cmake file.
# Print some message showing some of them
message(STATUS "OpenCV library status:")
message(STATUS " version: ${OpenCV_VERSION}")
message(STATUS " libraries: ${OpenCV_LIBS}")
message(STATUS " include path: ${OpenCV_INCLUDE_DIRS}")

if(CMAKE_VERSION VERSION_LESS "2.8.11")
# Add OpenCV headers location to your include paths
include_directories(${OpenCV_INCLUDE_DIRS})
endif()

# Declare the executable target built from your sources
add_executable(opencv_example example.cpp)

# Link your application with OpenCV libraries
target_link_libraries(opencv_example ${OpenCV_LIBS})

然后执行：

cmake . 
make 
./opencv_example test.jpg

示例代码参见：https://www.cnblogs.com/Shuqing-cxw/p/9195303.html