Linux下的自动化构建工具之make/makefile的用法详解

1

2

3

4

5

mycode:mycode.c

    gcc mycode.c -o mycode

.PHONY:clean                                                                                              

clean:

    rm -f mycode

1

2

3

4

5

6

7

8

9

[root@VM-4-11-centos ~]# stat 106/text.c

  File: ‘106/text.c'

  Size: 0             Blocks: 0          IO Block: 4096   regular empty file

Device: fd01h/64769d    Inode: 658416      Links: 1

Access: (0644/-rw-r--r--)  Uid: (    0/    root)   Gid: (    0/    root)

Access: 2022-09-17 21:13:21.098656019 +0800//最近访问

Modify: 2022-09-17 21:13:21.098656019 +0800//最近修改

Change: 2022-09-17 21:13:21.098656019 +0800//最近改动

 Birth: -

1

2

3

4

5

6

7

8

9

#include    

#include    

int main()   

{   

    printf("hello world\n");//如果这里没有\n，程序将会在3秒后执行打印

    //fflush(stdout);//fflush会立即刷新缓冲区

    sleep(3);   

    return 0;   

}  

1

2

3

4

5

6

7

8

9

10

11

12

13

14

#include    

#include    

int main()   

{   

    int cnt=10;   

    while(cnt)   

    {   

        printf("%2d\r",cnt);//2d控制刷新两位，\r表示回车                                                                                  

        fflush(stdout);//手动刷新缓冲区  

        sleep(1);   

        --cnt;   

    }   

    return 0;   

} 

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

//.h文件   

#pragma once                                                                                              

#include                                                          

#include                                          

#include                                                                                                                       

#define NUM 101                                                                     

#define STYLE '*'                                                                              

extern void processOn();

//.c文件

#include "process.h"                                                                                          

void processOn()   

{   

    int cnt=0;   

    char bar[NUM];   

    memset(bar,'\0',NUM);   

    char type[4]={'|','/','-','\\'};   

    while(cnt<=100)   

    {   

        //-100表示占据屏幕100个空间并左对齐，%%转义为%

        printf("[%-100s][%d%%][%c]\r",bar,cnt,type[cnt%4]);  

        bar[cnt++]=STYLE;   

        fflush(stdout);   

        usleep(50000);   

    }   

    printf("\n");   

}