Locate Lua library This module defines

LUA51_FOUND, if false, do not try to link to Lua
LUA_INCLUDE_DIR, where to find lua.h
LUA_VERSION_STRING, the version of Lua found (since CMake 2.8.8)

Note that the expected include convention is

#include "lua.h"

and not

#include <lua/lua.h>

This is because, the lua location is not standardized and may exist in locations other than lua/