default=None, help='Number of builder threads to use')
parser.add_option('-u', '--show_unknown', action='store_true',
default=False, help='Show boards with unknown build result')
+ parser.add_option('-U', '--show-environment', action='store_true',
+ default=False, help='Show environment changes in summary')
parser.add_option('-v', '--verbose', action='store_true',
default=False, help='Show build results while the build progresses')
parser.add_option('-V', '--verbose-build', action='store_true',