buf.WriteString(defaultCCFunc("defaultCC", defaultcc))
	buf.WriteString(defaultCCFunc("defaultCXX", defaultcxx))
	writefile(buf.String(), file, writeSkipSame)
}

func defaultCCFunc(name string, defaultcc map[string]string) string {
	var buf strings.Builder

	fmt.Fprintf(&buf, "func %s(goos, goarch string) string {\n", name)
	fmt.Fprintf(&buf, "\tswitch goos+`/`+goarch {\n")

	// by the CXX environment variable or defaultCXX if CXX is not set.
	// Else, use the CC environment variable and defaultCC as fallback.
	var compiler []string
	if cxx {
		compiler = envList("CXX", cfg.DefaultCXX(cfg.Goos, cfg.Goarch))
	} else {
		compiler = envList("CC", cfg.DefaultCC(cfg.Goos, cfg.Goarch))
	}
	ldflags = append(ldflags, "-buildmode="+ldBuildmode)

	}

	cc := cfg.Getenv("CC")
	ccChanged := true
	if cc == "" {
		ccChanged = false
		cc = cfg.DefaultCC(cfg.Goos, cfg.Goarch)
	}
	cxx := cfg.Getenv("CXX")
	cxxChanged := true
	if cxx == "" {
		cxxChanged = false
		cxx = cfg.DefaultCXX(cfg.Goos, cfg.Goarch)
	}
	ar, arChanged := cfg.EnvOrAndChanged("AR", "ar")
	env = append(env, cfg.EnvVar{Name: "AR", Value: ar, Changed: arChanged})

	goexperiment     string
	workdir          string
	tooldir          string
	oldgoos          string
	oldgoarch        string
	oldgocache       string
	exe              string
	defaultcc        map[string]string
	defaultcxx       map[string]string
	defaultpkgconfig string
	defaultldso      string

	rebuildall bool
	noOpt      bool
	isRelease  bool

	vflag int // verbosity
)

	}
	return err
}

// GccCmd returns a gcc command line prefix
// defaultCC is defined in zdefaultcc.go, written by cmd/dist.
func (b *Builder) GccCmd(incdir, workdir string) []string {
	return b.compilerCmd(b.ccExe(), incdir, workdir)
}

// GxxCmd returns a g++ command line prefix
// defaultCXX is defined in zdefaultcc.go, written by cmd/dist.
func (b *Builder) GxxCmd(incdir, workdir string) []string {

		capInstance.once = sync.Once{}
	}()
	defaultCap := Capabilities{
		AllowPrivileged: false,
		PrivilegedSources: PrivilegedSources{
			HostNetworkSources: []string{},
			HostPIDSources:     []string{},
			HostIPCSources:     []string{},
		},
	}

	res := Get()
	if !reflect.DeepEqual(defaultCap, res) {
		t.Fatalf("expected Capabilities: %#v, got a non-default: %#v", defaultCap, res)
	}

	cap := Capabilities{

    }

    private static int getMaxCommandLineLength() {
        int defaultMax = MAX_COMMAND_LINE_LENGTH_NIX;
        if (OperatingSystem.current().isMacOsX()) {
            defaultMax = MAX_COMMAND_LINE_LENGTH_OSX;
        } else if (OperatingSystem.current().isWindows()) {
            defaultMax = MAX_COMMAND_LINE_LENGTH_WINDOWS;
        }
        // in chars

    unaliased_request_["feed_x"] = CreateTensorProto(2);
    unaliased_request_["feed_y"] = CreateTensorProto("B");

    input_x_ = CreateTensorProto(2);
    input_y_ = CreateTensorProto("B");
    default_x_ = CreateTensorProto(1);
    default_y_ = CreateTensorProto("A");
  }

  template <class T>
  TensorProto CreateTensorProto(const T& val) {
    Tensor tensor(val);
    TensorProto tensor_proto;

	return conds
}

func defaultCCIsAbsolute(s *script.State) (bool, error) {
	GOOS, _ := s.LookupEnv("GOOS")
	GOARCH, _ := s.LookupEnv("GOARCH")
	defaultCC := cfg.DefaultCC(GOOS, GOARCH)
	if filepath.IsAbs(defaultCC) {
		if _, err := exec.LookPath(defaultCC); err == nil {
			return true, nil
		}
	}
	return false, nil
}

func ccIs(s *script.State, want string) (bool, error) {
	CC, _ := s.LookupEnv("CC")

env CGO_ENABLED=
go env CGO_ENABLED
stdout 1

# Clearing CC and removing everything but Go from the PATH should usually
# disable cgo: no C compiler anymore (unless the baked-in defaultCC is an
# absolute path and exists.
env CC=
env PATH=$GOROOT/bin
go env CGO_ENABLED
[!abscc] stdout 0
[abscc] stdout 1

# Setting CC should re-enable cgo.
env CC=cc
go env CGO_ENABLED
stdout 1