umegaya/ffiex — pull request #9 by umegaya (2014-06-04 06:36:35+00:00)
Title: fix problem that if no copt specified, csrc not works

this simple example produces error
``` lua
local ffi = require 'ffiex'
local lib,ext = ffi.csrc('test', [[
#include
extern void test(int id) { printf("%d", id); }
]])
lib.test(1000)
```