parser.add_option("-n", "--dry-run", help = "Don't execute, just go through the motions.",
action = "store_true", dest = "dry_run", default = False)
- parser.add_option("-S", "--dump-signatures", help = "Dump out the signature construction information, with no task execution. Parameters are passed to the signature handling code, use 'none' if no specific handler is required.",
- action = "append", dest = "dump_signatures", default = [])
+ parser.add_option("-S", "--dump-signatures", help = "Dump out the signature construction information, with no task execution. The SIGNATURE_HANDLER parameter is passed to the handler. Two common values are none and printdiff but the handler may define more/less. none means only dump the signature, printdiff means compare the dumped signature with the cached one.",
+ action = "append", dest = "dump_signatures", default = [], type="choice", choices=("none", "printdiff"), metavar="SIGNATURE_HANDLER")
parser.add_option("-p", "--parse-only", help = "Quit after parsing the BB recipes.",
action = "store_true", dest = "parse_only", default = False)