Linux C 动态库，静态库

add.h 文件

int add(int a, int b);

add.c文件

#include “add.h”

int add(int a, int b)

{

return a + b;

}

test.c文件

#include

#include “../include/add.h”

int main()

{

int a=1;

int b=2;

int c;

c=add(a,b);

printf(“1+2=%d\n”,c);

return 0;

}

编译源文件

CC=gcc

cflags = -I../include

sources = \

../src/add.c

debug: $(srouces)

$(CC) -c -fPIC -ggdb $(cflags) $(sources)

release: $(sources)

$(CC) -c -Os -fPIC $(cflags) $(sources)

生成静态库

ar -r libAdd.a *.o

生成动态库

gcc -shared -o libAdd.so *.o

调用静态库

CC=gcc

cflags = -I../include

sources = \

test.c

testStatic: $(sources)

$(CC) -o test $(sources) -lm -L ../lib -lAdd -static

调用动态库

CC=gcc

cflags = -I../include

sources = \

test.c

testDynamic: $(sources)

$(CC) -o test $(sources) -lm -L ../lib -lAdd

运行时可能找不到动态库

export LD_LIBRARY_PATH=