写个简单的makefile

有如下三个文件,我们以此来写个基本的makefile

 

test.h

#ifndef TEST_H_H#define TEST_H_H#include<string>#include<vector>#include<iostream>class Test{public:void vector_insert(std::string&);void vector_print();private:std::vector<std::string> str;};#endif 

 

test.cpp

#include"test.h"//#include<string>//#include<vector>//#include<iostream>void Test::vector_insert(std::string &s){str.push_back(s);}void Test::vector_print(){std::vector<std::string>::iterator iter=str.begin();for(;iter!=str.end();iter++)std::cout<<*iter;std::cout<<std::endl;} 

testmain.cpp

#include"test.h"#include<iostream>#include<string>#include<vector>using namespace std;int main(){string s1("hello ");string s2("world");Test test;test.vector_insert(s1);test.vector_insert(s2);test.vector_print();return 0;} 

 

在ubuntu下我们可以如下来编写makefile:

打开终端，

emacs test.mk

输入如下内容：（注意每行命令以制表符开始）

mytest:testmain.o test.og++ testmain.o test.o -o mytesttestmain.o:testmain.cppg++ -c testmain.cpptest.o:test.cpp test.hg++ -c test.cpp 

CTRL－x CTRL-s            //保存test.mk

CTRL－x CTRL-c            //关闭emacs

cat -v -t -e test.mk      //查看是否正确tab以^I显示，每行末尾以$显示

输出如下内容：

mytest:testmain.o test.o$^Ig++ testmain.o test.o -o mytest$testmain.o:testmain.cpp$^Ig++ -c testmain.cpp$test.o:test.cpp test.h$^Ig++ -c test.cpp$ 

make -f test.mk        //运行make自动维护

 

没有错误然后可以运行程序了

./mytest

 

看到结果：

hello world