if gohostarch == "" {
			fatalf("$objtype is unset")
		}
	case "solaris", "illumos":
		// Solaris and illumos systems have multi-arch userlands, and
		// "uname -m" reports the machine hardware name; e.g.,
		// "i86pc" on both 32- and 64-bit x86 systems.  Check for the
		// native (widest) instruction set on the running kernel:
		out := run("", CheckExit, "isainfo", "-n")
		if strings.Contains(out, "amd64") {
			gohostarch = "amd64"
		}