lua调用c动态库教程
作者:互联网
sudo apt-get install liblua5.2-dev
//lutil.c
#include <lua.h> #include <lauxlib.h> #include <string.h> #include <stdlib.h> //被lua调用的c接口的唯一函数原型: //typedef int (*lua_CFunction) (lua_State* L); static int lnum_add(lua_State* L) { double a = lua_tonumber(L, 1); //利用lua_tonumber获取参数 double b = lua_tonumber(L, 2); lua_pushnumber(L, a + b); //把返回值入栈 return 1; //表示返回的参数个数 } static int lnum_square(lua_State* L) { double n = lua_tonumber(L, 1); lua_pushnumber(L, n*n); return 1; } int luaopen_util(lua_State* L) { luaL_checkversion(L); luaL_Reg lst[] = { {"num_add", lnum_add}, {"num_square", lnum_square}, {NULL, NULL}, }; luaL_newlib(L, lst); return 1; }
//Makefile
util.so : lutil.c gcc -g -o $@ --shared $^ -I/usr/include/lua5.2 -L/usr/local/bin -llua5.2 -fPIC
//test.lua
local util = require "util" print( util.num_add(2, 3)) print( util.num_square(6))
//执行过程
1.make
2.lua test.lua
标签:教程,调用,lnum,util,lua,State,square,include 来源: https://www.cnblogs.com/still-smile/p/14517989.html