How to set the environment variable of zerobrane studio

Question

I install all torch package into my local file torch-distro(Followed by this tutorial). I want to use Zerobrane to debug my code. Zerobrane can't find my local path of torch. How Can I set my local path to the Zerobrane environment variable.
I tried to add path.lua = "${prefix}/torch-distro/install/bin/luajit" into the user.lua. But it can't work

Answer 1

Following method works on linux platform:

1. Configuring the luajit interpreter by adding following code into the user.lua

   path.lua = "your_path/luajit"

2. Configuring the envrioment variable by adding following code into the /opt/zbsstudio/lualibs/mobdebug/mobdebug.lua

   package.path = package.path .. ';my_path/?/init.lua' package.cpath = package.cpath .. ';my_path/?.so'

Answer 2

(These instructions are for the Windows version of Torch, but the steps should work for Linux/OSX versions assuming the paths are modified).

Let's say the Torch is installed in C:\Program Files\Torch, then to get it running as the external interpreter from ZeroBrane Studio (ZBS), you need to add path.lua=[[C:\Program Files\Torch\bin\torch-lua]] to <ZBS>\cfg\user.lua configuration file.

Now, when you execute a Lua script from ZBS (Project | Run or F6), it will run inside the Torch environment:

local torch = require 'torch'
local data = torch.Tensor{
   {68, 24, 20},
   {74, 26, 21},
   {80, 32, 24}
}
print(data)

However, there are few more steps required to get the debugging to work on Windows (these steps are likely not be needed on other systems, but I haven't tested debugging there). ZBS is using luasocket, which is compiled against lua51.dll, but Torch is using libtorch-lua.dll, so loading luasocket into your (Torch) process is likely to crash it. To make it work, you need to build a proxy DLL and put it into your Torch/bin folder.

To build the proxy DLL, you will need Visual Studio C++ or mingw/gcc compiled and can follow these steps:

1. Get mkforwardlib.lua (VS) or mkforwardlib-gcc.lua (mingw/gcc) script from Lua Proxy DLL3 page.
2. Run lua mkforwardlib.lua libtorch-lua lua51 X86; if everything goes well, this will produce lua51.dll file in the current folder.
3. Copy lua51.dll file to Torch\bin folder.

Now you should be able to debug Torch scripts by using Project | Start Debugging.