Lua cannot find module in C++ api?

Question

I am call lua in C++ applications. I have several lua files to call, like RunAPI_1208.lua , JSON.lua, etc. All the lua file is called by main.lua. While in C++ , I run all the file and finally run main.lua. I met this problem. I am using Cocos2d-x 2.2.6. How can I solve it?

[string "Main.lua"]:9: module 'RunAPI_1208' not found:
    no field package.preload['RunAPI_1208']
    no file './RunAPI_1208.lua'
    no file '/usr/local/share/lua/5.1/RunAPI_1208.lua'
    no file '/usr/local/share/lua/5.1/RunAPI_1208/init.lua'
    no file '/usr/local/lib/lua/5.1/RunAPI_1208.lua'
    no file '/usr/local/lib/lua/5.1/RunAPI_1208/init.lua'
    no file './RunAPI_1208.so'
    no file '/usr/local/lib/lua/5.1/RunAPI_1208.so'
    no file '/usr/local/lib/lua/5.1/loadall.so'
Cocos2d: [string "Main.lua"]:9: module 'RunAPI_1208' not found:
    no field package.preload['RunAPI_1208']
    no file './RunAPI_1208.lua'
    no file '/usr/local/share/lua/5.1/RunAPI_1208.lua'
    no file '/usr/local/share/lua/5.1/RunAPI_1208/init.lua'
    no file '/usr/local/lib/lua/5.1/RunAPI_1208.lua'
    no file '/usr/local/lib/lua/5.1/RunAPI_1208/init.lua'
    no file './RunAPI_1208.so'
    no file '/usr/local/lib/lua/5.1/RunAPI_1208.so'
    no file '/usr/local/lib/lua/5.1/loadall.so'

And this is my main.lua:

local run = require("RunAPI_1208")