Steps to make the example work : 1. Install the native client SDK (https://developer.chrome.com/native-client/sdk/download). 2. Declare the environment variable NACL_SDK_ROOT as the root of the target platform within the SDK (ex: ~/nacl_sdk/pepper_34/) : $ export NACL_SDK_ROOT=/path/to/nacl_sdk/pepper_[your_version] 3. Compile the Nit code with: `nitc --semi-global converter.nit` or `make`. You must use the '--semi-global' (or `--global`) option. Some features in the standard library are not supported by the NaCL platform, the global compiler do not try to compile them. 4. Start a local server using: `make serve`. 5. Set up the Chrome browser : - PNaCl is enabled by default in Chrome version 31 and later. - For a better development experience, it’s also recommended to disable the Chrome cache : - Open Chrome’s developer tools by clicking the menu icon menu-icon and choosing Tools > Developer tools. - Click the gear icon gear-icon in the bottom right corner of the Chrome window. - Under the “General” settings, check the box next to “Disable cache (while DevTools is open)”. - Keep the Developer Tools pane open while developing Native Client applications. 6. You can now access the application in Chrome at the address `http://localhost:5103/`.