ubuntu16.04 Cmake学习二

本节主要总结编译程序的时候使用了第三方库的情况,以调用开源opencv-2.4.9为例子,具体安装详见http://www.cnblogs.com/xsfmg/p/5900420.html

工程文件目录创建

/home/bmi-zc/project:
|—CMakeLists.txt 顶层CMakeLists
|
|—bin
|
|—include
|    test.h
|    ceshi.h     
|
|—lib
|
|—src
  |  CMakeLists.txt
  |  
  |—main
  |  CMakeLists.txt
  |  main.cpp
  |
  |—test
    CMakeLists.txt
    test1.cpp
    test2.cpp  
    ceshi.cpp

程序清单

test.h

    #ifndef INCLUDE_TEST_H
    #define INCLUDE_TEST_H
    #include <stdio.h>
    void t1();
    void t2();
    #endif /*INCLUDE_TEST_H*/

ceshi.h

   #ifndef INCLUDE_CESHI_H
   #define INCLUDE_CESHI_H
   #include <cv.h>
   #include <highgui.h>
   int t3();
   #endif /*INCLUDE_CESHI_H*/

test1.cpp

    #include "/home/bmi-zc/project/include/test.h"
    void t1()
    {
    printf("this is t1()\n");	
    }

test2.cpp

    #include "/home/bmi-zc/project/include/test.h"
    void t2()
    {
    printf("this is t2()\n");
    }

ceshi.cpp

    #include "/home/bmi-zc/project/include/ceshi.h"
    using namespace cv;
    int t3()
    {
    Mat image;
    image = imread("/home/bmi-zc/project/test1.jpg", 1);
    if (!image.data)
    {
    printf("No image data\n");
    return -1;
    }
    namedWindow("Display Image", CV_WINDOW_AUTOSIZE);
    imshow("Display Image", image);
    waitKey(0);
    return 0;
    }

main.cpp

    #include "/home/bmi-zc/project/include/test.h"  
    int main()  
    {  
    t1();  
    t2();
    t3();  
    return 0;  
    }
  • 这一节里,因为opencv主要采用C++编写,所以我们的编译器变成了g++,在建立算法程序后缀需要用.cpp。
  • 这一节将头文件都统一整理在了test.h和ceshi.h,其中test.h里是c语言库标准头文件,ceshi.h里是我们要用到的opencv的头文件。

CMakeLIsts.txt清单

/home/bmi-zc/project/CMakeLists.txt

    cmake_minimum_required(VERSION 3.5)
    PROJECT(TEST)
    ADD_SUBDIRECTORY(src)

/home/bmi-zc/project/src/CMakeLists.txt

    ADD_SUBDIRECTORY(main)
    ADD_SUBDIRECTORY(test)

/home/bmi-zc/project/src/test/CMakeLists.txt

    SET(CMAKE_CXX_COMPTLER g++)  //编译器采用g++
	SET(SRC_LIST test1.cpp test2.cpp ceshi.cpp)
	INCLUDE_DIRECTORIES(/home/bmi-zc/opencv-2.4.9/include/opencv)   //opencv头文件目录
	INCLUDE_DIRECTORIES(${PROJECT_SOURCE_DIR}/include)
	SET(LIBRARY_OUTPUT_PATH ${PROJECT_SOURCE_DIR}/lib)
	ADD_LIBRARY(libtest STATIC ${SRC_LIST})

/home/bmi-zc/project/src/main/CMakeLists.txt

    SET(SRC_LIST main.cpp)
    INCLUDE_DIRECTORIES(${PROJECT_SOURCE_DIR}/include)
	FIND_PACKAGE(OpenCV REQUIRED)
	SET(EXECUTABLE_OUTPUT_PATH ${PROJECT_SOURCE_DIR}/bin)
	ADD_EXECUTABLE(main ${SRC_LIST})
	link_directories(${PROJECT_SOURCE_DIR}/lib)
	TARGET_LINK_LIBRARIES(main ${OpenCV_LIBS})
	TARGET_LINK_LIBRARIES(main libtest)
  • 重点介绍find_package命令

    find_package可以被用来在系统中自动查找配置构建工程所需的程序库。CMake自带的模块文件里有大半是对各种常见开源库的find_package支持。

编译&运行

  • 回到工程根目录,/home/bmi-zc/project
    cmake .
    make

  • 进入bin文件夹,执行main可执行文件
    cd bin
    ./main

分享推送

比较优秀的博文:

  1. CMake使用进阶,作者linghutf,写于2016年6月。
    http://linghutf.github.io/2016/06/16/cmake/
posted @ 2016-09-26 09:58  星释贩卖馆  阅读(1055)  评论(0编辑  收藏  举报