Comment 4 for bug 1323233

The typical json file would look like this:

{
  "qmlDebug": "port:1234,block",
  "env": {
    "key1": "value1",
    "key2": "value2"
  },
  "gdbPort": "1234"
}

It defines which debug modes are needed and
the ports to be used for that. Also it is possible
to set environment variables.
This file is created by the SDK launcher:
http://bazaar.launchpad.net/~zeller-benjamin/qtcreator-plugin-ubuntu/cmakeclick/view/head:/share/qtcreator/ubuntu/scripts/qtc_device_applaunch.py