switch flagW {
	case ternaryFlagFalse:
		*FlagW = false
	case ternaryFlagTrue:
		*FlagW = true
	case ternaryFlagUnset:
		*FlagW = *FlagS // -s implies -w if not explicitly set
		if ctxt.IsDarwin() && ctxt.BuildMode == BuildModeCShared {
			*FlagW = true // default to -w in c-shared mode on darwin, see #61229
		}
	}

	if !buildcfg.Experiment.RegabiWrappers {
		abiInternalVer = 0
	}