Linker error with Lua and vs2015 - c++

Question

I'm very new to using visual studio, and c++.
I was trying to build a game to test my OOP understandings using new language, then I realized I might need to start using scripting language with in my C++ game. I found LUA to be a good candidate for the scripting part of the game, so I decided to follow a tutorial I've found at :
http://www.gamedev.net/page/resources/_/technical/game-programming/the-lua-tutorial-r2999
#include "stdafx.h"
#include <lua.hpp>
#include<iostream>
int main()
{
char *Lua =
"x = 8 "
"return ( x > 7 ) ";
lua_State *luaState;
luaState = luaL_newstate();
int iStatus = luaL_loadstring(luaState, szLua);
if (iStatus)
{
std::cout << "Error: " << lua_tostring(luaState, -1);
return 1;
}
return 0;
}
However VS 2015 debugger is giving
unresolved external symbol _luaL_newstate
unresolved external symbol _luaL_loadstring
unresolved external symbol _lua_tolstring
I'm currently using Lua 5.1.5, and followed the tutorial setting tutorial section step by step, where it tells me to add lua folders to project settings.
Can someone tell me what i'm doing wrong?

Answer 1

The linker errors indicate that you are missing Lua functions from the executable you want to build. It's possible that you missed this step in the tutorial you've been following: add the Lua source files to your project's "Source Files". There is a list of the files in C:\dev\lua-5.1.5\etc\all.c; you want all of those files except for lua.c.
In general, you need to add the Lua library, lua DLL, or Lua files (in this case it's not enough to specify path to them), so that the references for the functions you are using in your code are properly resolved (statically or dynamically).