! go build -o $devnull cmd/buildid
stderr 'android/amd64 requires external \(cgo\) linking, but cgo is not enabled'
! stderr 'cannot find runtime/cgo'

! go test -c -o $devnull os
stderr '# os\nandroid/amd64 requires external \(cgo\) linking, but cgo is not enabled'
! stderr 'cannot find runtime/cgo'

env GOOS=ios GOARCH=arm64 CGO_ENABLED=0

! go build -o $devnull cmd/buildid

	"   PPROF_BINARY_PATH  Search path for local binary files\n" +
	"                      default: $HOME/pprof/binaries\n" +
	"                      searches $buildid/$name, $buildid/*, $path/$buildid,\n" +
	"                      ${buildid:0:2}/${buildid:2}.debug, $name, $path,\n" +
	"                      ${name}.debug, $dir/.debug/${name}.debug,\n" +
	"                      usr/lib/debug/$dir/${name}.debug\n" +

	if jobType == "presubmit" {
		return join(artifactsBase, "pr-logs/pull", fmt.Sprintf("%s_%s", repoOwner, repoName), pullNumber, jobName, buildID, name)
	}
	return join(artifactsBase, "logs", jobName, buildID, name)
}

func join(base string, elem ...string) string {
	res, _ := url.JoinPath(base, elem...)
	return res

	checkLinkOutput("0x"+strings.Repeat("00", 32), "usage")
	checkLinkOutput("0x"+strings.Repeat("00", 33), "-B option too long (max 32 digits)")
}

func checkLinkOutput(buildid string, message string) {
	cmd := exec.Command("go", "tool", "link", "-B", buildid)
	out, err := cmd.CombinedOutput()
	if err == nil {
		log.Fatalf("expected cmd/link to fail")
	}

	firstLine := string(bytes.SplitN(out, []byte("\n"), 2)[0])

		}
		var mappings []*profile.Mapping
		id := uint64(1)
		parseProcSelfMaps(mmap, func(lo, hi, offset uint64, file, buildID string) {
			mappings = append(mappings, &profile.Mapping{
				ID:      id,
				Start:   lo,
				Limit:   hi,
				Offset:  offset,
				File:    file,
				BuildID: buildID,
			})
			id++
		})
		if len(mappings) < 2 {
			// It is possible for a binary to only have 1 executable

                    // report lastModified, but file size would change so we would detect it!
                    padding "-" * publishId

                    // add a random build id to make sure file changes
                    buildId "$buildId"
                }
            }
            component {
                if (printComponentGAV) {
                    group this.group
                    module this.module

// difficult/impossible to support reproducible builds. Since we try
// hard to maintain build reproducibility for Go, the APIs here
// compute a new UUID (based on the Go build ID) and write it to the
// final executable generated by the external linker.

import (
	"cmd/internal/notsha256"
	"debug/macho"
	"io"
	"os"
	"unsafe"
)

// uuidFromGoBuildId hashes the Go build ID and returns a slice of 16

			continue
		}
		if m.BuildID == "" {
			if u, err := url.Parse(m.File); err == nil && u.IsAbs() && strings.Contains(strings.ToLower(u.Scheme), "http") {
				// Skip mappings pointing to a source URL
				continue
			}
		}

		name := filepath.Base(m.File)
		if m.BuildID != "" {
			name += fmt.Sprintf(" (build ID %s)", m.BuildID)
		}

	return nil, nil
}

var elfGoNote = []byte("Go\x00\x00")
var elfGNUNote = []byte("GNU\x00")

// The Go build ID is stored in a note described by an ELF PT_NOTE prog
// header. The caller has already opened filename, to get f, and read
// at least 4 kB out, in data.
func readELF(name string, f *os.File, data []byte) (buildid string, err error) {
	// Assume the note content is in the data, already read.

		// enter the mappings into b.mem in the first place.

		buildID, _ := elfBuildID(file)
		addMapping(lo, hi, offset, file, buildID)
	}
}

func (b *profileBuilder) addMapping(lo, hi, offset uint64, file, buildID string) {
	b.addMappingEntry(lo, hi, offset, file, buildID, false)
}

func (b *profileBuilder) addMappingEntry(lo, hi, offset uint64, file, buildID string, fake bool) {
	b.mem = append(b.mem, memMap{