Currently, if a build fails, the meta.json does not get generated and the entire build is marked as failed.

This prevents us from having a clearer understanding on what went wrong and what kind of failure this was. A failure can be categorized in different ways and can happen at different steps in the EDA flow:

• FPGA tool perf infrastructure (e.g. wrong environment settings, missing tools, etc.)
• Synthesis failure
• P&R failures (which could be more fine-grained to see which exact P&R step has failed).

All of these different error output statuses should end up in the meta.json, which will most probably include an additional field such as the following:

Success case:

{
  "status": {
    "success": 0
  }
}

Failure case:

{
  "status": {
    "failure": 4,
    "message": "<failure_message>"
  }
}

Where the number is relative to the error code. In case of failure, an output message could be useful as well.