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Linux系统编程25:基础IO之亲自实现一个动静态库
阅读量:193 次
发布时间:2019-02-28

本文共 1459 字,大约阅读时间需要 4 分钟。

??

???????????????.a?.so???????.a?.so???????.o????????????????.o?????????????????

?????????????mylib.h????mylib.c?????????????????????

// mylib.h#include 
void Myprintf();
// mylib.c#include "mylib.h"void Myprintf() {    printf("Hello World\n");}

????gcc -c??.o???????????test??mylib.o?mylib.h?????????????????????test.c????????????mylib.h?????Myprintf??????????????mylib.o???

?????

??????????????????????????????????????add.c add.h sub.c sub.h?????

?????????

// add.h#include 
int add(int x, int y);
// add.c#include "add.h"int add(int x, int y) {    return x + y;}
// sub.h#include 
int sub(int x, int y);
// sub.c#include "sub.h"int sub(int x, int y) {    return x - y;}

??????.c????????.o???????ar -rc????????

ar -rc libMYLIB.a add.o sub.o

????????????.a????????????????????my_method?????include?lib??????.h?????include?????.a?????lib????

?????

????????????????Makefile????????????-fPIC????????????????-shared??????????

Makefile?????

libMYLIB.so: add.o sub.o    gcc -shared -o $@ $^add.o: add.c    gcc -fPIC -c add.csub.o: sub.c    gcc -fPIC -c sub.cclean:    rm -rf *.o libMYLIB.so my_methodpackage:    mkdir -p my_method/include    mkdir -p my_method/lib    cp *.h my_method/include    cp *.so my_method/lib

?????????????????????????-static???

gcc -o test.exe test.c -I./my_method/include -L./my_method/lib -lMYLIB

????????????????????????????LD_LIBRARY_PATH????????

export LD_LIBRARY_PATH=./my_method/lib

????????????????????

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