// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// Package flags implements top-level flags and the usage message for the assembler.
package flags

import (
	"cmd/internal/obj"
	"cmd/internal/objabi"
	"flag"
	"fmt"
	"os"
	"path/filepath"
	"strings"
)

var (

(see https://golang.org/pkg/go/build/#hdr-Build_Constraints for details about the constraint syntax).
For example:

	// #cgo CFLAGS: -DPNG_DEBUG=1
	// #cgo amd64 386 CFLAGS: -DX86=1
	// #cgo LDFLAGS: -lpng
	// #include <png.h>
	import "C"

Alternatively, CPPFLAGS and LDFLAGS may be obtained via the pkg-config tool
using a '#cgo pkg-config:' directive followed by the package names.
For example:

	@echo "Building minio binary to './minio'"
	@CGO_ENABLED=0 go build -tags kqueue -trimpath --ldflags "$(LDFLAGS)" -o $(PWD)/minio 1>/dev/null

hotfix-vars:
	$(eval LDFLAGS := $(shell MINIO_RELEASE="RELEASE" MINIO_HOTFIX="hotfix.$(shell git rev-parse --short HEAD)" go run buildscripts/gen-ldflags.go $(shell git describe --tags --abbrev=0 | \

			return
		}
		x.Type = VersionType(zb0002)
	}
	{
		var zb0003 uint8
		zb0003, bts, err = msgp.ReadUint8Bytes(bts)
		if err != nil {
			err = msgp.WrapError(err, "Flags")
			return
		}
		x.Flags = xlFlags(zb0003)
	}
	o = bts
	return
}

// unmarshalV unmarshals with a specific metadata version.
func (j *xlMetaV2Version) unmarshalV(v uint8, bts []byte) (o []byte, err error) {

	architecture := arch.Set(GOARCH, *flags.Shared || *flags.Dynlink)
	if architecture == nil {
		log.Fatalf("unrecognized architecture %s", GOARCH)
	}
	ctxt := obj.Linknew(architecture.LinkArch)
	ctxt.Debugasm = flags.PrintOut
	ctxt.Debugvlog = flags.DebugV
	ctxt.Flag_dynlink = *flags.Dynlink
	ctxt.Flag_linkshared = *flags.Linkshared
	ctxt.Flag_shared = *flags.Shared || *flags.Dynlink
	ctxt.Flag_maymorestack = flags.DebugFlags.MayMoreStack

pkg syscall (darwin-arm64), type Kevent_t struct
pkg syscall (darwin-arm64), type Kevent_t struct, Data int64
pkg syscall (darwin-arm64), type Kevent_t struct, Fflags uint32
pkg syscall (darwin-arm64), type Kevent_t struct, Filter int16
pkg syscall (darwin-arm64), type Kevent_t struct, Flags uint16
pkg syscall (darwin-arm64), type Kevent_t struct, Ident uint64
pkg syscall (darwin-arm64), type Kevent_t struct, Udata *uint8

pkg syscall (freebsd-arm64), type Kevent_t struct
pkg syscall (freebsd-arm64), type Kevent_t struct, Data int64
pkg syscall (freebsd-arm64), type Kevent_t struct, Fflags uint32
pkg syscall (freebsd-arm64), type Kevent_t struct, Filter int16
pkg syscall (freebsd-arm64), type Kevent_t struct, Flags uint16
pkg syscall (freebsd-arm64), type Kevent_t struct, Ident uint64
pkg syscall (freebsd-arm64), type Kevent_t struct, Udata *uint8

${TARGET_OUT}/release/istioctl-linux-amd64:
	GOOS=linux GOARCH=amd64 LDFLAGS=$(RELEASE_LDFLAGS) common/scripts/gobuild.sh $@ ./istioctl/cmd/istioctl
${TARGET_OUT}/release/istioctl-linux-armv7:
	GOOS=linux GOARCH=arm GOARM=7 LDFLAGS=$(RELEASE_LDFLAGS) common/scripts/gobuild.sh $@ ./istioctl/cmd/istioctl
${TARGET_OUT}/release/istioctl-linux-arm64:
	GOOS=linux GOARCH=arm64 LDFLAGS=$(RELEASE_LDFLAGS) common/scripts/gobuild.sh $@ ./istioctl/cmd/istioctl

// this behavior.
func adminMiddleware(f http.HandlerFunc, flags ...hFlag) http.HandlerFunc {
	// Collect all flags with bitwise-OR and assign operator
	var handlerFlags hFlag
	for _, flag := range flags {
		handlerFlags |= flag
	}

	// Get name of the handler using reflection.
	handlerName := getHandlerName(f, "adminAPIHandlers")

	WrittenByVersion uint64                `msg:"v"` // Tracks written by MinIO version
}

// xlFlags contains flags on the object.
// This can be extended up to 64 bits without breaking compatibility.
type xlFlags uint8

const (
	xlFlagFreeVersion xlFlags = 1 << iota
	xlFlagUsesDataDir
	xlFlagInlineData
)

func (x xlFlags) String() string {
	var s strings.Builder
	if x&xlFlagFreeVersion != 0 {