/*
** tools.h
*/
#include "stdio.h"
#include "stdlib.h"
void draw();
void write();
void sign();
void show();

/*
**tools.c
*/
#include "tools.h"
void draw()
{
printf("draw some graphics./n");
}
void write()
{
printf("write some characters./n");
}
void sign()
{
printf("sign your name./n");
}
void show()
{
printf("A picture by xufeng./n");
draw();
write();
printf("A picture is finished./n");
}

g++ -fPIC -shared -o libmytools.so tools.c

/*
** test.c
*/
#include "tools.h"
main()
{
show();
printf("success!/n");
}

g++ -o test test.c ./libmytools.so

g++ -o test test.c -L./ -lmytools

3Â¥: Originally posted by qzhost at 2012-04-05 08:06:57:
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