opt.add_option('--force-cpp11', action='store_true', default=False, help='force use of C++11')
opt.add_option('--variant', help='build variant (swaroop-studio, swaroop-theater)', choices=['swaroop-studio', 'swaroop-theater'])
opt.add_option('--use-lld', action='store_true', default=False, help='use lld linker')
opt.add_option('--force-cpp11', action='store_true', default=False, help='force use of C++11')
opt.add_option('--variant', help='build variant (swaroop-studio, swaroop-theater)', choices=['swaroop-studio', 'swaroop-theater'])
opt.add_option('--use-lld', action='store_true', default=False, help='use lld linker')