}

// machoUpdateSegment updates the load command for a moved segment.
// Only the linkedit segment should move, and it should have 0 sections.
func machoUpdateSegment(r loadCmdReader, linkseg *macho.Segment, linkoffset uint64) error {
	var seg macho.Segment64
	if err := r.ReadAt(0, &seg); err != nil {
		return err
	}

	// Only the linkedit segment moved, anything before that is fine.
	if seg.Offset < linkseg.Offset {
		return nil

		sb.SetType(sym.SMACHOGOT)
		sb.SetReachable(true)
		sb.SetAlign(4)

		s = ctxt.loader.LookupOrCreateSym(".linkedit.plt", 0) // indirect table for .plt
		sb = ctxt.loader.MakeSymbolUpdater(s)
		sb.SetType(sym.SMACHOINDIRECTPLT)
		sb.SetReachable(true)

		s = ctxt.loader.LookupOrCreateSym(".linkedit.got", 0) // indirect table for .got
		sb = ctxt.loader.MakeSymbolUpdater(s)
		sb.SetType(sym.SMACHOINDIRECTGOT)

A linker command line flag `-checklinkname=0` can be used to disable
this check, for debugging and experimenting purposes.

<!-- CL 473495 -->
When building a dynamically linked ELF binary (including PIE binary), the

// that newer versions of the Macos toolchain (the newer linker in
// particular) appear to compute the UUID based not just on the
// content of the object files being linked but also on things like
// the timestamps/paths of the objects; this makes it
// difficult/impossible to support reproducible builds. Since we try
// hard to maintain build reproducibility for Go, the APIs here

will be replaced by the absolute path to the directory containing the source
file. This allows pre-compiled static libraries to be included in the package
directory and linked properly.
For example if package foo is in the directory /go/src/foo:

	// #cgo LDFLAGS: -L${SRCDIR}/libs -lfoo

Will be expanded to:

	// #cgo LDFLAGS: -L/go/src/foo/libs -lfoo

flagged as a TODO by the automated tooling. That is true even for proposals that add API.

Use the following forms in your markdown:

	[http.Request]                     # symbol documentation; auto-linked as in Go doc strings
	[Request]                          # short form, for symbols in the package being documented
	[net/http]                         # package link
	[#12345](/issue/12345)             # GitHub issues

// (1) scheme is enough to express any kind of operand combination.
//
// Jump instructions use the To.Val field to point to the target *Prog,
// which must be in the same linked list as the jump instruction.
//
// The Progs for a given function are arranged in a list linked through the Link field.
//
// Each Prog is charged to a specific source line in the debug information,
// specified by Pos.Line().

		ctxt.mkArchSym(".rela", 0, &ctxt.Rela)
		ctxt.mkArchSym(".rel.plt", 0, &ctxt.RelPLT)
		ctxt.mkArchSym(".rela.plt", 0, &ctxt.RelaPLT)
	}
	if ctxt.IsDarwin() {
		ctxt.mkArchSym(".linkedit.got", 0, &ctxt.LinkEditGOT)
		ctxt.mkArchSym(".linkedit.plt", 0, &ctxt.LinkEditPLT)
	}
}

type Arch struct {
	Funcalign  int
	Maxalign   int
	Minalign   int
	Dwarfregsp int
	Dwarfreglr int

var (
	flagBuildid = flag.String("buildid", "", "record `id` as Go toolchain build id")
	flagBindNow = flag.Bool("bindnow", false, "mark a dynamically linked ELF object for immediate function binding")

	flagOutfile    = flag.String("o", "", "write output to `file`")
	flagPluginPath = flag.String("pluginpath", "", "full path name for plugin")

//  2. parse the nocallback and noescape directives.
func (f *File) ProcessCgoDirectives() {
	linesIn := strings.Split(f.Preamble, "\n")
	linesOut := make([]string, 0, len(linesIn))
	f.NoCallbacks = make(map[string]bool)
	f.NoEscapes = make(map[string]bool)
	for _, line := range linesIn {
		l := strings.TrimSpace(line)
		if len(l) < 5 || l[:4] != "#cgo" || !unicode.IsSpace(rune(l[4])) {