// in cmd/go, and are documented in 'go help buildmode'.
type BuildMode uint8

const (
	BuildModeUnset BuildMode = iota
	BuildModeExe
	BuildModePIE
	BuildModeCArchive
	BuildModeCShared
	BuildModeShared
	BuildModePlugin
)

// Set implements flag.Value to set the build mode based on the argument
// to the -buildmode flag.
func (mode *BuildMode) Set(s string) error {
	switch s {
	default:

	IsELF         bool
}

//
// Target type functions
//

func (t *Target) IsExe() bool {
	return t.BuildMode == BuildModeExe
}

func (t *Target) IsShared() bool {
	return t.BuildMode == BuildModeShared
}

func (t *Target) IsPlugin() bool {
	return t.BuildMode == BuildModePlugin
}

func (t *Target) IsInternal() bool {
	return t.LinkMode == LinkInternal
}

func (t *Target) IsExternal() bool {

	}

	if !buildcfg.Experiment.RegabiWrappers {
		abiInternalVer = 0
	}

	startProfile()
	if ctxt.BuildMode == BuildModeUnset {
		ctxt.BuildMode.Set("exe")
	}

	if ctxt.BuildMode != BuildModeShared && flag.NArg() != 1 {
		usage()
	}

	if *flagOutfile == "" {
		*flagOutfile = "a.out"
		if ctxt.HeadType == objabi.Hwindows {
			*flagOutfile += ".exe"
		}
	}

		// Make symbol local so multiple plugins don't clobber each other's inittask list.
		ctxt.loader.SetAttrLocal(ctxt.mainInittasks, true)
	case BuildModeShared:
		// For a shared library, all packages are roots.
		var roots []string
		for _, lib := range ctxt.Library {
			roots = append(roots, fmt.Sprintf("%s..inittask", objabi.PathToPrefix(lib.Pkg)))
		}

			Target:  hdrTarget,
		}
		a.Deps = append(a.Deps, ah)
	}
}

// buildmodeShared takes the "go build" action a1 into the building of a shared library of a1.Deps.
// That is, the input a1 represents "go build pkgs" and the result represents "go build -buildmode=shared pkgs".
func (b *Builder) buildmodeShared(mode, depMode BuildMode, args []string, pkgs []*load.Package, a1 *Action) *Action {
	name, err := libname(args, pkgs)

// in separate shared libraries linked together at runtime.
func (ctxt *Link) DynlinkingGo() bool {
	if !ctxt.Loaded {
		panic("DynlinkingGo called before all symbols loaded")
	}
	return ctxt.BuildMode == BuildModeShared || ctxt.linkShared || ctxt.BuildMode == BuildModePlugin || ctxt.canUsePlugins
}

// CanUsePlugins reports whether a plugins can be used
func (ctxt *Link) CanUsePlugins() bool {
	if !ctxt.Loaded {

		b.Do(ctx, a)
		return
	}

	a := &Action{Mode: "go build"}
	for _, p := range pkgs {
		a.Deps = append(a.Deps, b.AutoAction(ModeBuild, depMode, p))
	}
	if cfg.BuildBuildmode == "shared" {
		a = b.buildmodeShared(ModeBuild, depMode, args, pkgs, a)
	}
	b.Do(ctx, a)
}

var CmdInstall = &base.Command{
	UsageLine: "go install [build flags] [packages]",
	Short:     "compile and install packages and dependencies",

	d.genericIfaceMethod = make(map[string]bool)
	if buildcfg.Experiment.FieldTrack {
		d.ldr.Reachparent = make([]loader.Sym, d.ldr.NSym())
	}
	d.dynlink = d.ctxt.DynlinkingGo()

	if d.ctxt.BuildMode == BuildModeShared {
		// Mark all symbols defined in this library as reachable when
		// building a shared library.
		n := d.ldr.NDef()
		for i := 1; i < n; i++ {
			s := loader.Sym(i)

			shstrtabAddstring(".note.go.deps")
		}
	}

	hasinitarr := ctxt.linkShared

	/* shared library initializer */
	switch ctxt.BuildMode {
	case BuildModeCArchive, BuildModeCShared, BuildModeShared, BuildModePlugin:
		hasinitarr = true
	}

	if hasinitarr {
		shstrtabAddstring(".init_array")
		shstrtabAddstring(elfRelType + ".init_array")
	}

	if !*FlagS {

				}
			} else {
				symGroupType[s] = sym.STYPE
				if symtyperel != 0 {
					ldr.SetCarrierSym(s, symtype)
				}
			}
		}
	}

	if ctxt.BuildMode == BuildModeShared {
		abihashgostr := ldr.CreateSymForUpdate("go:link.abihash."+filepath.Base(*flagOutfile), 0)
		abihashgostr.SetType(sym.SRODATA)
		hashsym := ldr.LookupOrCreateSym("go:link.abihashbytes", 0)