// Check validates if the given executable is present in the path.
func (ipc InPathCheck) Check() (warnings, errs []error) {
	klog.V(1).Infof("validating the presence of executable %s", ipc.executable)
	_, err := ipc.exec.LookPath(ipc.executable)
	if err != nil {
		if ipc.mandatory {
			// Return as an error:
			return nil, []error{errors.Errorf("%s not found in system path", ipc.executable)}
		}
		// Return as a warning:

		t.Skip("gccgo test skipped on PPC64 until issue #60798 is resolved")
	}

	gccgoName := os.Getenv("GCCGO")
	if gccgoName == "" {
		gccgoName = "gccgo"
	}
	gccgoPath, err := exec.LookPath(gccgoName)
	if err != nil {
		t.Skip("gccgo not found")
	}
	cmd := exec.Command(gccgoPath, "-dumpversion")
	output, err := cmd.CombinedOutput()
	if err != nil {

	if len(args) >= 2 && args[0] == "-go-internal-cd" {
		if filepath.IsAbs(args[1]) {
			dir = args[1]
		} else {
			dir = filepath.Join(dir, args[1])
		}
		args = args[2:]
	}

	_, err := cfg.LookPath(v.Cmd)
	if err != nil {
		fmt.Fprintf(os.Stderr,
			"go: missing %s command. See https://golang.org/s/gogetcmd\n",
			v.Name)
		return nil, err
	}

	cmd := exec.Command(v.Cmd, args...)
	cmd.Dir = dir