var internal/syslist.KnownOS

3 uses

	internal/syslist (current package)
		syslist.go#L17: var KnownOS = map[string]bool{

	go/build
		build.go#L2016: 	if n >= 2 && syslist.KnownOS[l[n-2]] && syslist.KnownArch[l[n-1]] {
		build.go#L2023: 	if n >= 1 && (syslist.KnownOS[l[n-1]] || syslist.KnownArch[l[n-1]]) {