flagExtar      = flag.String("extar", "", "archive program for buildmode=c-archive")

	flagCaptureHostObjs = flag.String("capturehostobjs", "", "capture host object files loaded during internal linking to specified dir")

	flagA             = flag.Bool("a", false, "no-op (deprecated)")
	FlagC             = flag.Bool("c", false, "dump call graph")
	FlagD             = flag.Bool("d", false, "disable dynamic executable")

  jitrt_flag_list = new std::vector<Flag>({
      Flag("always_specialize", &jitrt_flags->always_specialize, ""),
      Flag("cost_driven_async_parallel_for",
           &jitrt_flags->cost_driven_async_parallel_for, ""),
      Flag("enable_crash_reproducer", &jitrt_flags->enable_crash_reproducer,
           ""),
      Flag("log_query_of_death", &jitrt_flags->log_query_of_death, ""),
      Flag("vectorize", &jitrt_flags->vectorize, ""),

package main

import (
	"flag"
	"fmt"
	"io"
	"log"
	"os"

	"internal/trace/raw"
	"internal/trace/version"
)

func init() {
	flag.Usage = func() {
		fmt.Fprintf(flag.CommandLine.Output(), "Usage: %s [mode]\n", os.Args[0])
		fmt.Fprintf(flag.CommandLine.Output(), "\n")
		fmt.Fprintf(flag.CommandLine.Output(), "Supported modes:")
		fmt.Fprintf(flag.CommandLine.Output(), "\n")

	fs.Usage = func() { helpCalled = true }
	var flag bool
	fs.BoolVar(&flag, "flag", false, "regular flag")
	// Regular flag invocation should work
	err := fs.Parse([]string{"-flag=true"})
	if err != nil {
		t.Fatal("expected no error; got ", err)
	}
	if !flag {
		t.Error("flag was not set by -flag")
	}
	if helpCalled {
		t.Error("help called for regular flag")
		helpCalled = false // reset for next test
	}

	flag.BindEnv(fs, constants.InboundTProxyRouteTable, "r", "", &cfg.InboundTProxyRouteTable)

	flag.BindEnv(fs, constants.DryRun, "n", "Do not call any external dependencies like iptables.",
		&cfg.DryRun)

	flag.BindEnv(fs, constants.TraceLogging, "", "Insert tracing logs for each iptables rules, using the LOG chain.", &cfg.TraceLogging)

	base.SetFromGOFLAGS(&CmdVet.Flag)
	addFromGOFLAGS := map[string]bool{}
	CmdVet.Flag.Visit(func(f *flag.Flag) {
		if isVetFlag[f.Name] {
			addFromGOFLAGS[f.Name] = true
		}
	})

	explicitFlags := make([]string, 0, len(args))
	for len(args) > 0 {
		f, remainingArgs, err := cmdflag.ParseOne(&CmdVet.Flag, args)

		if errors.Is(err, flag.ErrHelp) {
			exitWithUsage()
		}

	}

	testenv.MustHaveExec(t)

	for _, flag := range []string{"", "-test.v", "-test.v=test2json"} {
		flag := flag
		t.Run(flag, func(t *testing.T) {
			t.Parallel()
			exe, err := os.Executable()
			if err != nil {
				exe = os.Args[0]
			}
			cmd := exec.Command(exe, "-test.run=^TestFlag$", "-test_flag_arg="+flag)
			if flag != "" {
				cmd.Args = append(cmd.Args, flag)
			}

		fmt.Fprintf(flag.CommandLine.Output(), "Supported modes:")
		fmt.Fprintf(flag.CommandLine.Output(), "\n")
		fmt.Fprintf(flag.CommandLine.Output(), "* size  - dumps size stats\n")
		fmt.Fprintf(flag.CommandLine.Output(), "\n")
		flag.PrintDefaults()
	}
	log.SetFlags(0)
}

func main() {
	log.SetPrefix("")
	flag.Parse()

	if flag.NArg() != 1 {
		log.Print("missing mode argument")
		flag.Usage()
		os.Exit(1)
	}

type boolFlag interface {
	flag.Value
	IsBoolFlag() bool
}

// SetFromGOFLAGS sets the flags in the given flag set using settings in $GOFLAGS.
func SetFromGOFLAGS(flags *flag.FlagSet) {
	InitGOFLAGS()

	// This loop is similar to flag.Parse except that it ignores
	// unknown flags found in goflags, so that setting, say, GOFLAGS=-ldflags=-w

            }
        }
        return enabled.contains(flag);
    }

    @Override
    public void enable(FeatureFlag flag) {
        enabled.add(flag);
    }

    @Override
    public boolean isEnabledWithApi(FeatureFlag flag) {
        return enabled.contains(flag);
    }