静态链接库：编译时就完成链接过程,文件名扩展名为.a
[xxx@localhost staticLibrary]$ ls
main.c test.c test.h
[mapan@localhost staticLibrary]$ ls
main.c test.c test.h
[xxx@localhost staticLibrary]$ cat main.c
#include<stdio.h>
#include"test.h"
int main()
{
int num=test(2,3);
printf("num=%d\n",num);
return 0;
}
[xxx@localhost staticLibrary]$ cat test.c
#include"test.h"
int test(int a,int b)
{
return a*b;
}
[xxx@localhost staticLibrary]$ cat test.h
int test(int a,int b);
[xxx@localhost staticLibrary]$
再看：
[xxx@localhost staticLibrary]$ gcc -c test.c
[xxx@localhost staticLibrary]$ ls
main.c test.c test.h test.o
[xxx@localhost staticLibrary]$ ar cr libtest.a test.o
[xxx@localhost staticLibrary]$ ls
libtest.a main.c test.c test.h test.o
[xxx@localhost staticLibrary]$
调用静态库：
[xxx@localhost staticLibrary]$ gcc main.c -L. -ltest
[xxx@localhost staticLibrary]$ ls
a.out libtest.a main.c test.c test.h test.o
[xxx@localhost staticLibrary]$ ./a.out
num=6
[xxx@localhost staticLibrary]$
查看库信息：
[xxx@localhost staticLibrary]$ ar tv libtest.a
rw-rw-r-- 511/511 1240 Jul 26 19:52 2017 test.o
[xxx@localhost staticLibrary]$ 一个静态链接库可以由多个.o文件组成。
