lua调用.so测试

运行环境：CentOS6.5, gcc 4.4.7

1. # vim main.c

#include <stdio.h>     
#include <lua.h>
#include <lualib.h>
#include <lauxlib.h>
 

int luaopen_tt(lua_State * l); 


//要想注册进lua，函数的定义为 typedef int (*lua_CFunction)(lua_State* L)
static int printHello(lua_State * l)
{
    lua_pushstring(l,"hello lua");
    
    //返回值代表向栈内压入的元素个数
    return 1;
}
 
 
//把需要用到的函数都放到注册表中，统一进行注册
static const luaL_Reg lib[]=
{
    {"printHello",printHello},
    {0,0}
};
 
//把上边的函数封装到一个模块里边
int luaopen_tt(lua_State * l)
{
    luaL_register(l,"tt",lib);
    
    return 1;
}

2. # gcc main.c -fPIC -shared -o tt.so

3. # vim test.lua

print("hello")

require "tt"

print(tt.printHello())

4. # lua test.lua