syncthing/build.go

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// Copyright (C) 2014 The Syncthing Authors.
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//
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// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this file,
// You can obtain one at https://mozilla.org/MPL/2.0/.
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// +build ignore
package main
import (
"archive/tar"
"archive/zip"
"bytes"
"compress/gzip"
"errors"
"flag"
"fmt"
"io"
"io/ioutil"
"log"
"os"
"os/exec"
"os/user"
"path/filepath"
"regexp"
"runtime"
"strconv"
"strings"
"text/template"
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"time"
)
var (
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versionRe = regexp.MustCompile(`-[0-9]{1,3}-g[0-9a-f]{5,10}`)
goarch string
goos string
noupgrade bool
version string
goVersion float64
race bool
debug = os.Getenv("BUILDDEBUG") != ""
)
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type target struct {
name string
buildPkg string
binaryName string
archiveFiles []archiveFile
installationFiles []archiveFile
tags []string
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}
type archiveFile struct {
src string
dst string
perm os.FileMode
}
var targets = map[string]target{
"all": {
// Only valid for the "build" and "install" commands as it lacks all
// the archive creation stuff.
buildPkg: "./cmd/...",
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tags: []string{"purego"},
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},
"syncthing": {
// The default target for "build", "install", "tar", "zip", "deb", etc.
name: "syncthing",
buildPkg: "./cmd/syncthing",
binaryName: "syncthing", // .exe will be added automatically for Windows builds
archiveFiles: []archiveFile{
{src: "{{binary}}", dst: "{{binary}}", perm: 0755},
{src: "README.md", dst: "README.txt", perm: 0644},
{src: "LICENSE", dst: "LICENSE.txt", perm: 0644},
{src: "AUTHORS", dst: "AUTHORS.txt", perm: 0644},
// All files from etc/ and extra/ added automatically in init().
},
installationFiles: []archiveFile{
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{src: "{{binary}}", dst: "deb/usr/bin/{{binary}}", perm: 0755},
{src: "README.md", dst: "deb/usr/share/doc/syncthing/README.txt", perm: 0644},
{src: "LICENSE", dst: "deb/usr/share/doc/syncthing/LICENSE.txt", perm: 0644},
{src: "AUTHORS", dst: "deb/usr/share/doc/syncthing/AUTHORS.txt", perm: 0644},
{src: "man/syncthing.1", dst: "deb/usr/share/man/man1/syncthing.1", perm: 0644},
{src: "man/syncthing-config.5", dst: "deb/usr/share/man/man5/syncthing-config.5", perm: 0644},
{src: "man/syncthing-stignore.5", dst: "deb/usr/share/man/man5/syncthing-stignore.5", perm: 0644},
{src: "man/syncthing-device-ids.7", dst: "deb/usr/share/man/man7/syncthing-device-ids.7", perm: 0644},
{src: "man/syncthing-event-api.7", dst: "deb/usr/share/man/man7/syncthing-event-api.7", perm: 0644},
{src: "man/syncthing-faq.7", dst: "deb/usr/share/man/man7/syncthing-faq.7", perm: 0644},
{src: "man/syncthing-networking.7", dst: "deb/usr/share/man/man7/syncthing-networking.7", perm: 0644},
{src: "man/syncthing-rest-api.7", dst: "deb/usr/share/man/man7/syncthing-rest-api.7", perm: 0644},
{src: "man/syncthing-security.7", dst: "deb/usr/share/man/man7/syncthing-security.7", perm: 0644},
{src: "man/syncthing-versioning.7", dst: "deb/usr/share/man/man7/syncthing-versioning.7", perm: 0644},
{src: "etc/linux-systemd/system/syncthing@.service", dst: "deb/lib/systemd/system/syncthing@.service", perm: 0644},
{src: "etc/linux-systemd/system/syncthing-resume.service", dst: "deb/lib/systemd/system/syncthing-resume.service", perm: 0644},
{src: "etc/linux-systemd/user/syncthing.service", dst: "deb/usr/lib/systemd/user/syncthing.service", perm: 0644},
{src: "etc/firewall-ufw/syncthing", dst: "deb/etc/ufw/applications.d/syncthing", perm: 0644},
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},
},
"stdiscosrv": {
name: "stdiscosrv",
buildPkg: "./cmd/stdiscosrv",
binaryName: "stdiscosrv", // .exe will be added automatically for Windows builds
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archiveFiles: []archiveFile{
{src: "{{binary}}", dst: "{{binary}}", perm: 0755},
{src: "cmd/stdiscosrv/README.md", dst: "README.txt", perm: 0644},
{src: "cmd/stdiscosrv/LICENSE", dst: "LICENSE.txt", perm: 0644},
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{src: "AUTHORS", dst: "AUTHORS.txt", perm: 0644},
},
installationFiles: []archiveFile{
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{src: "{{binary}}", dst: "deb/usr/bin/{{binary}}", perm: 0755},
{src: "cmd/stdiscosrv/README.md", dst: "deb/usr/share/doc/stdiscosrv/README.txt", perm: 0644},
{src: "cmd/stdiscosrv/LICENSE", dst: "deb/usr/share/doc/stdiscosrv/LICENSE.txt", perm: 0644},
{src: "AUTHORS", dst: "deb/usr/share/doc/stdiscosrv/AUTHORS.txt", perm: 0644},
{src: "man/stdiscosrv.1", dst: "deb/usr/share/man/man1/stdiscosrv.1", perm: 0644},
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},
tags: []string{"purego"},
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},
"strelaysrv": {
name: "strelaysrv",
buildPkg: "./cmd/strelaysrv",
binaryName: "strelaysrv", // .exe will be added automatically for Windows builds
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archiveFiles: []archiveFile{
{src: "{{binary}}", dst: "{{binary}}", perm: 0755},
{src: "cmd/strelaysrv/README.md", dst: "README.txt", perm: 0644},
{src: "cmd/strelaysrv/LICENSE", dst: "LICENSE.txt", perm: 0644},
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{src: "AUTHORS", dst: "AUTHORS.txt", perm: 0644},
},
installationFiles: []archiveFile{
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{src: "{{binary}}", dst: "deb/usr/bin/{{binary}}", perm: 0755},
{src: "cmd/strelaysrv/README.md", dst: "deb/usr/share/doc/strelaysrv/README.txt", perm: 0644},
{src: "cmd/strelaysrv/LICENSE", dst: "deb/usr/share/doc/strelaysrv/LICENSE.txt", perm: 0644},
{src: "AUTHORS", dst: "deb/usr/share/doc/strelaysrv/AUTHORS.txt", perm: 0644},
{src: "man/strelaysrv.1", dst: "deb/usr/share/man/man1/strelaysrv.1", perm: 0644},
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},
},
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"strelaypoolsrv": {
name: "strelaypoolsrv",
buildPkg: "./cmd/strelaypoolsrv",
binaryName: "strelaypoolsrv", // .exe will be added automatically for Windows builds
archiveFiles: []archiveFile{
{src: "{{binary}}", dst: "{{binary}}", perm: 0755},
{src: "cmd/strelaypoolsrv/README.md", dst: "README.txt", perm: 0644},
{src: "cmd/strelaypoolsrv/LICENSE", dst: "LICENSE.txt", perm: 0644},
{src: "AUTHORS", dst: "AUTHORS.txt", perm: 0644},
},
installationFiles: []archiveFile{
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{src: "{{binary}}", dst: "deb/usr/bin/{{binary}}", perm: 0755},
{src: "cmd/strelaypoolsrv/README.md", dst: "deb/usr/share/doc/relaysrv/README.txt", perm: 0644},
{src: "cmd/strelaypoolsrv/LICENSE", dst: "deb/usr/share/doc/relaysrv/LICENSE.txt", perm: 0644},
{src: "AUTHORS", dst: "deb/usr/share/doc/relaysrv/AUTHORS.txt", perm: 0644},
},
},
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}
var (
// fast linters complete in a fraction of a second and might as well be
// run always as part of the build
fastLinters = []string{
"deadcode",
"golint",
"ineffassign",
"vet",
}
// slow linters take several seconds and are run only as part of the
// "metalint" command.
slowLinters = []string{
"gosimple",
"staticcheck",
"structcheck",
"unused",
"varcheck",
}
// Which parts of the tree to lint
lintDirs = []string{".", "./lib/...", "./cmd/..."}
// Messages to ignore
lintExcludes = []string{
".pb.go",
"should have comment",
"protocol.Vector composite literal uses unkeyed fields",
"cli.Requires composite literal uses unkeyed fields",
"Use DialContext instead", // Go 1.7
"os.SEEK_SET is deprecated", // Go 1.7
}
)
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func init() {
// The "syncthing" target includes a few more files found in the "etc"
// and "extra" dirs.
syncthingPkg := targets["syncthing"]
for _, file := range listFiles("etc") {
syncthingPkg.archiveFiles = append(syncthingPkg.archiveFiles, archiveFile{src: file, dst: file, perm: 0644})
}
for _, file := range listFiles("extra") {
syncthingPkg.archiveFiles = append(syncthingPkg.archiveFiles, archiveFile{src: file, dst: file, perm: 0644})
}
for _, file := range listFiles("extra") {
syncthingPkg.installationFiles = append(syncthingPkg.installationFiles, archiveFile{src: file, dst: "deb/usr/share/doc/syncthing/" + filepath.Base(file), perm: 0644})
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}
targets["syncthing"] = syncthingPkg
}
const minGoVersion = 1.5
func main() {
log.SetOutput(os.Stdout)
log.SetFlags(0)
if debug {
t0 := time.Now()
defer func() {
log.Println("... build completed in", time.Since(t0))
}()
}
if os.Getenv("GOPATH") == "" {
setGoPath()
}
// We use Go 1.5+ vendoring.
os.Setenv("GO15VENDOREXPERIMENT", "1")
// Set path to $GOPATH/bin:$PATH so that we can for sure find tools we
// might have installed during "build.go setup".
os.Setenv("PATH", fmt.Sprintf("%s%cbin%c%s", os.Getenv("GOPATH"), os.PathSeparator, os.PathListSeparator, os.Getenv("PATH")))
parseFlags()
checkArchitecture()
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goVersion, _ = checkRequiredGoVersion()
// Invoking build.go with no parameters at all builds everything (incrementally),
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// which is what you want for maximum error checking during development.
if flag.NArg() == 0 {
runCommand("install", targets["all"])
} else {
// with any command given but not a target, the target is
// "syncthing". So "go run build.go install" is "go run build.go install
// syncthing" etc.
targetName := "syncthing"
if flag.NArg() > 1 {
targetName = flag.Arg(1)
}
target, ok := targets[targetName]
if !ok {
log.Fatalln("Unknown target", target)
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}
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runCommand(flag.Arg(0), target)
}
}
func checkArchitecture() {
switch goarch {
case "386", "amd64", "arm", "arm64", "ppc64", "ppc64le":
break
default:
log.Printf("Unknown goarch %q; proceed with caution!", goarch)
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}
}
func runCommand(cmd string, target target) {
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switch cmd {
case "setup":
setup()
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case "install":
var tags []string
if noupgrade {
tags = []string{"noupgrade"}
}
install(target, tags)
metalint(fastLinters, lintDirs)
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case "build":
var tags []string
if noupgrade {
tags = []string{"noupgrade"}
}
build(target, tags)
metalint(fastLinters, lintDirs)
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case "test":
test("./lib/...", "./cmd/...")
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case "bench":
bench("./lib/...", "./cmd/...")
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case "assets":
rebuildAssets()
case "proto":
proto()
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case "translate":
translate()
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case "transifex":
transifex()
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case "tar":
buildTar(target)
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case "zip":
buildZip(target)
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case "deb":
buildDeb(target)
case "snap":
buildSnap(target)
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case "clean":
clean()
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case "vet":
metalint(fastLinters, lintDirs)
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case "lint":
metalint(fastLinters, lintDirs)
case "metalint":
metalint(fastLinters, lintDirs)
metalint(slowLinters, lintDirs)
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case "version":
fmt.Println(getVersion())
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default:
log.Fatalf("Unknown command %q", cmd)
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}
}
// setGoPath sets GOPATH correctly with the assumption that we are
// in $GOPATH/src/github.com/syncthing/syncthing.
func setGoPath() {
cwd, err := os.Getwd()
if err != nil {
log.Fatal(err)
}
gopath := filepath.Clean(filepath.Join(cwd, "../../../../"))
log.Println("GOPATH is", gopath)
os.Setenv("GOPATH", gopath)
}
func parseFlags() {
flag.StringVar(&goarch, "goarch", runtime.GOARCH, "GOARCH")
flag.StringVar(&goos, "goos", runtime.GOOS, "GOOS")
flag.BoolVar(&noupgrade, "no-upgrade", noupgrade, "Disable upgrade functionality")
flag.StringVar(&version, "version", getVersion(), "Set compiled in version string")
flag.BoolVar(&race, "race", race, "Use race detector")
flag.Parse()
}
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func checkRequiredGoVersion() (float64, bool) {
re := regexp.MustCompile(`go(\d+\.\d+)`)
ver := runtime.Version()
if m := re.FindStringSubmatch(ver); len(m) == 2 {
vs := string(m[1])
// This is a standard go build. Verify that it's new enough.
f, err := strconv.ParseFloat(vs, 64)
if err != nil {
log.Printf("*** Couldn't parse Go version out of %q.\n*** This isn't known to work, proceed on your own risk.", vs)
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return 0, false
}
if f < 1.5 {
log.Printf("*** Go version %.01f doesn't support the vendoring mechanism.\n*** Ensure correct dependencies in your $GOPATH.", f)
} else if f < minGoVersion {
log.Fatalf("*** Go version %.01f is less than required %.01f.\n*** This is known not to work, not proceeding.", f, minGoVersion)
}
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return f, true
}
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log.Printf("*** Unknown Go version %q.\n*** This isn't known to work, proceed on your own risk.", ver)
return 0, false
}
func setup() {
packages := []string{
"github.com/alecthomas/gometalinter",
"github.com/AlekSi/gocov-xml",
"github.com/axw/gocov/gocov",
"github.com/FiloSottile/gvt",
"github.com/golang/lint/golint",
"github.com/gordonklaus/ineffassign",
"github.com/mdempsky/unconvert",
"github.com/mitchellh/go-wordwrap",
"github.com/opennota/check/cmd/...",
"github.com/tsenart/deadcode",
"golang.org/x/net/html",
"golang.org/x/tools/cmd/cover",
"honnef.co/go/simple/cmd/gosimple",
"honnef.co/go/staticcheck/cmd/staticcheck",
"honnef.co/go/unused/cmd/unused",
}
for _, pkg := range packages {
fmt.Println(pkg)
runPrint("go", "get", "-u", pkg)
}
runPrint("go", "install", "-v", "./vendor/github.com/gogo/protobuf/protoc-gen-gogofast")
}
func test(pkgs ...string) {
lazyRebuildAssets()
useRace := runtime.GOARCH == "amd64"
switch runtime.GOOS {
case "darwin", "linux", "freebsd", "windows":
default:
useRace = false
}
if useRace {
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runPrint("go", append([]string{"test", "-short", "-race", "-timeout", "60s", "-tags", "purego"}, pkgs...)...)
} else {
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runPrint("go", append([]string{"test", "-short", "-timeout", "60s", "-tags", "purego"}, pkgs...)...)
}
}
func bench(pkgs ...string) {
lazyRebuildAssets()
runPrint("go", append([]string{"test", "-run", "NONE", "-bench", "."}, pkgs...)...)
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}
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func install(target target, tags []string) {
lazyRebuildAssets()
tags = append(target.tags, tags...)
cwd, err := os.Getwd()
if err != nil {
log.Fatal(err)
}
os.Setenv("GOBIN", filepath.Join(cwd, "bin"))
args := []string{"install", "-v", "-ldflags", ldflags()}
if len(tags) > 0 {
args = append(args, "-tags", strings.Join(tags, " "))
}
if race {
args = append(args, "-race")
}
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args = append(args, target.buildPkg)
os.Setenv("GOOS", goos)
os.Setenv("GOARCH", goarch)
runPrint("go", args...)
}
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func build(target target, tags []string) {
lazyRebuildAssets()
tags = append(target.tags, tags...)
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rmr(target.binaryName)
args := []string{"build", "-i", "-v", "-ldflags", ldflags()}
if len(tags) > 0 {
args = append(args, "-tags", strings.Join(tags, " "))
}
if race {
args = append(args, "-race")
}
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args = append(args, target.buildPkg)
os.Setenv("GOOS", goos)
os.Setenv("GOARCH", goarch)
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runPrint("go", args...)
}
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func buildTar(target target) {
name := archiveName(target)
filename := name + ".tar.gz"
var tags []string
if noupgrade {
tags = []string{"noupgrade"}
name += "-noupgrade"
}
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build(target, tags)
if goos == "darwin" {
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macosCodesign(target.binaryName)
}
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for i := range target.archiveFiles {
target.archiveFiles[i].src = strings.Replace(target.archiveFiles[i].src, "{{binary}}", target.binaryName, 1)
target.archiveFiles[i].dst = strings.Replace(target.archiveFiles[i].dst, "{{binary}}", target.binaryName, 1)
target.archiveFiles[i].dst = name + "/" + target.archiveFiles[i].dst
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}
tarGz(filename, target.archiveFiles)
log.Println(filename)
}
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func buildZip(target target) {
target.binaryName += ".exe"
name := archiveName(target)
filename := name + ".zip"
var tags []string
if noupgrade {
tags = []string{"noupgrade"}
name += "-noupgrade"
}
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build(target, tags)
for i := range target.archiveFiles {
target.archiveFiles[i].src = strings.Replace(target.archiveFiles[i].src, "{{binary}}", target.binaryName, 1)
target.archiveFiles[i].dst = strings.Replace(target.archiveFiles[i].dst, "{{binary}}", target.binaryName, 1)
target.archiveFiles[i].dst = name + "/" + target.archiveFiles[i].dst
}
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zipFile(filename, target.archiveFiles)
log.Println(filename)
}
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func buildDeb(target target) {
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os.RemoveAll("deb")
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// "goarch" here is set to whatever the Debian packages expect. We correct
// it to what we actually know how to build and keep the Debian variant
// name in "debarch".
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debarch := goarch
switch goarch {
case "i386":
goarch = "386"
case "armel", "armhf":
goarch = "arm"
}
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build(target, []string{"noupgrade"})
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for i := range target.installationFiles {
target.installationFiles[i].src = strings.Replace(target.installationFiles[i].src, "{{binary}}", target.binaryName, 1)
target.installationFiles[i].dst = strings.Replace(target.installationFiles[i].dst, "{{binary}}", target.binaryName, 1)
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}
for _, af := range target.installationFiles {
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if err := copyFile(af.src, af.dst, af.perm); err != nil {
log.Fatal(err)
}
}
maintainer := "Syncthing Release Management <release@syncthing.net>"
debver := version
if strings.HasPrefix(debver, "v") {
debver = debver[1:]
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}
runPrint("fpm", "-t", "deb", "-s", "dir", "-C", "deb",
"-n", "syncthing", "-v", debver, "-a", debarch,
"--vendor", maintainer, "-m", maintainer,
"-d", "libc6",
"-d", "procps", // because postinst script
"--url", "https://syncthing.net/",
"--description", "Open Source Continuous File Synchronization",
"--after-upgrade", "script/post-upgrade",
"--license", "MPL-2")
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}
func buildSnap(target target) {
os.RemoveAll("snap")
tmpl, err := template.ParseFiles("snapcraft.yaml.template")
if err != nil {
log.Fatal(err)
}
f, err := os.Create("snapcraft.yaml")
defer f.Close()
if err != nil {
log.Fatal(err)
}
snaparch := goarch
if snaparch == "armhf" {
goarch = "arm"
}
snapver := version
if strings.HasPrefix(snapver, "v") {
snapver = snapver[1:]
}
snapgrade := "devel"
if matched, _ := regexp.MatchString(`^\d+\.\d+\.\d+(-rc.\d+)?$`, snapver); matched {
snapgrade = "stable"
}
err = tmpl.Execute(f, map[string]string{
"Version": snapver,
"Architecture": snaparch,
"Grade": snapgrade,
})
if err != nil {
log.Fatal(err)
}
runPrint("snapcraft", "clean")
build(target, []string{"noupgrade"})
runPrint("snapcraft")
}
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func copyFile(src, dst string, perm os.FileMode) error {
dstDir := filepath.Dir(dst)
os.MkdirAll(dstDir, 0755) // ignore error
srcFd, err := os.Open(src)
if err != nil {
return err
}
defer srcFd.Close()
dstFd, err := os.OpenFile(dst, os.O_CREATE|os.O_TRUNC|os.O_WRONLY, perm)
if err != nil {
return err
}
defer dstFd.Close()
_, err = io.Copy(dstFd, srcFd)
return err
}
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func listFiles(dir string) []string {
var res []string
filepath.Walk(dir, func(path string, fi os.FileInfo, err error) error {
if err != nil {
return err
}
if fi.Mode().IsRegular() {
res = append(res, path)
}
return nil
})
return res
}
func rebuildAssets() {
runPipe("lib/auto/gui.files.go", "go", "run", "script/genassets.go", "gui")
runPipe("cmd/strelaypoolsrv/auto/gui.go", "go", "run", "script/genassets.go", "cmd/strelaypoolsrv/gui")
}
func lazyRebuildAssets() {
if shouldRebuildAssets("lib/auto/gui.files.go", "gui") || shouldRebuildAssets("cmd/strelaypoolsrv/auto/gui.go", "cmd/strelaypoolsrv/auto/gui") {
rebuildAssets()
}
}
func shouldRebuildAssets(target, srcdir string) bool {
info, err := os.Stat(target)
if err != nil {
// If the file doesn't exist, we must rebuild it
return true
}
// Check if any of the files in gui/ are newer than the asset file. If
// so we should rebuild it.
currentBuild := info.ModTime()
assetsAreNewer := false
stop := errors.New("no need to iterate further")
filepath.Walk(srcdir, func(path string, info os.FileInfo, err error) error {
if err != nil {
return err
}
if info.ModTime().After(currentBuild) {
assetsAreNewer = true
return stop
}
return nil
})
return assetsAreNewer
}
func proto() {
runPrint("go", "generate", "./lib/...")
}
func translate() {
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os.Chdir("gui/default/assets/lang")
runPipe("lang-en-new.json", "go", "run", "../../../../script/translate.go", "lang-en.json", "../../../")
os.Remove("lang-en.json")
err := os.Rename("lang-en-new.json", "lang-en.json")
if err != nil {
log.Fatal(err)
}
os.Chdir("../../../..")
}
func transifex() {
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os.Chdir("gui/default/assets/lang")
runPrint("go", "run", "../../../../script/transifexdl.go")
}
func clean() {
rmr("bin")
rmr(filepath.Join(os.Getenv("GOPATH"), fmt.Sprintf("pkg/%s_%s/github.com/syncthing", goos, goarch)))
}
func ldflags() string {
sep := '='
if goVersion > 0 && goVersion < 1.5 {
sep = ' '
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}
b := new(bytes.Buffer)
b.WriteString("-w")
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fmt.Fprintf(b, " -X main.Version%c%s", sep, version)
fmt.Fprintf(b, " -X main.BuildStamp%c%d", sep, buildStamp())
fmt.Fprintf(b, " -X main.BuildUser%c%s", sep, buildUser())
fmt.Fprintf(b, " -X main.BuildHost%c%s", sep, buildHost())
return b.String()
}
func rmr(paths ...string) {
for _, path := range paths {
if debug {
log.Println("rm -r", path)
}
os.RemoveAll(path)
}
}
func getReleaseVersion() (string, error) {
fd, err := os.Open("RELEASE")
if err != nil {
return "", err
}
defer fd.Close()
bs, err := ioutil.ReadAll(fd)
if err != nil {
return "", err
}
return string(bytes.TrimSpace(bs)), nil
}
func getGitVersion() (string, error) {
v, err := runError("git", "describe", "--always", "--dirty")
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if err != nil {
return "", err
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}
v = versionRe.ReplaceAllFunc(v, func(s []byte) []byte {
s[0] = '+'
return s
})
return string(v), nil
}
func getVersion() string {
// First try for a RELEASE file,
if ver, err := getReleaseVersion(); err == nil {
return ver
}
// ... then see if we have a Git tag.
if ver, err := getGitVersion(); err == nil {
if strings.Contains(ver, "-") {
// The version already contains a hash and stuff. See if we can
// find a current branch name to tack onto it as well.
return ver + getBranchSuffix()
}
return ver
}
// This seems to be a dev build.
return "unknown-dev"
}
func getBranchSuffix() string {
bs, err := runError("git", "branch", "-a", "--contains")
if err != nil {
return ""
}
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branches := strings.Split(string(bs), "\n")
if len(branches) == 0 {
return ""
}
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branch := ""
for i, candidate := range branches {
if strings.HasPrefix(candidate, "*") {
// This is the current branch. Select it!
branch = strings.TrimLeft(candidate, " \t*")
break
} else if i == 0 {
// Otherwise the first branch in the list will do.
branch = strings.TrimSpace(branch)
}
}
if branch == "" {
return ""
}
// The branch name may be on the form "remotes/origin/foo" from which we
// just want "foo".
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parts := strings.Split(branch, "/")
if len(parts) == 0 || len(parts[len(parts)-1]) == 0 {
return ""
}
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branch = parts[len(parts)-1]
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if branch == "master" {
// master builds are the default.
return ""
}
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validBranchRe := regexp.MustCompile(`^[a-zA-Z0-9_.-]+$`)
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if !validBranchRe.MatchString(branch) {
// There's some odd stuff in the branch name. Better skip it.
return ""
}
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return "-" + branch
}
func buildStamp() int64 {
// If SOURCE_DATE_EPOCH is set, use that.
if s, _ := strconv.ParseInt(os.Getenv("SOURCE_DATE_EPOCH"), 10, 64); s > 0 {
return s
}
// Try to get the timestamp of the latest commit.
bs, err := runError("git", "show", "-s", "--format=%ct")
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if err != nil {
// Fall back to "now".
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return time.Now().Unix()
}
s, _ := strconv.ParseInt(string(bs), 10, 64)
return s
}
func buildUser() string {
if v := os.Getenv("BUILD_USER"); v != "" {
return v
}
u, err := user.Current()
if err != nil {
return "unknown-user"
}
return strings.Replace(u.Username, " ", "-", -1)
}
func buildHost() string {
if v := os.Getenv("BUILD_HOST"); v != "" {
return v
}
h, err := os.Hostname()
if err != nil {
return "unknown-host"
}
return h
}
func buildArch() string {
os := goos
if os == "darwin" {
os = "macosx"
}
return fmt.Sprintf("%s-%s", os, goarch)
}
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func archiveName(target target) string {
return fmt.Sprintf("%s-%s-%s", target.name, buildArch(), version)
}
func runError(cmd string, args ...string) ([]byte, error) {
if debug {
t0 := time.Now()
log.Println("runError:", cmd, strings.Join(args, " "))
defer func() {
log.Println("... in", time.Since(t0))
}()
}
ecmd := exec.Command(cmd, args...)
bs, err := ecmd.CombinedOutput()
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return bytes.TrimSpace(bs), err
}
func runPrint(cmd string, args ...string) {
if debug {
t0 := time.Now()
log.Println("runPrint:", cmd, strings.Join(args, " "))
defer func() {
log.Println("... in", time.Since(t0))
}()
}
ecmd := exec.Command(cmd, args...)
ecmd.Stdout = os.Stdout
ecmd.Stderr = os.Stderr
err := ecmd.Run()
if err != nil {
log.Fatal(err)
}
}
func runPipe(file, cmd string, args ...string) {
if debug {
t0 := time.Now()
log.Println("runPipe:", cmd, strings.Join(args, " "))
defer func() {
log.Println("... in", time.Since(t0))
}()
}
fd, err := os.Create(file)
if err != nil {
log.Fatal(err)
}
ecmd := exec.Command(cmd, args...)
ecmd.Stdout = fd
ecmd.Stderr = os.Stderr
err = ecmd.Run()
if err != nil {
log.Fatal(err)
}
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fd.Close()
}
func tarGz(out string, files []archiveFile) {
fd, err := os.Create(out)
if err != nil {
log.Fatal(err)
}
gw := gzip.NewWriter(fd)
tw := tar.NewWriter(gw)
for _, f := range files {
sf, err := os.Open(f.src)
if err != nil {
log.Fatal(err)
}
info, err := sf.Stat()
if err != nil {
log.Fatal(err)
}
h := &tar.Header{
Name: f.dst,
Size: info.Size(),
Mode: int64(info.Mode()),
ModTime: info.ModTime(),
}
err = tw.WriteHeader(h)
if err != nil {
log.Fatal(err)
}
_, err = io.Copy(tw, sf)
if err != nil {
log.Fatal(err)
}
sf.Close()
}
err = tw.Close()
if err != nil {
log.Fatal(err)
}
err = gw.Close()
if err != nil {
log.Fatal(err)
}
err = fd.Close()
if err != nil {
log.Fatal(err)
}
}
func zipFile(out string, files []archiveFile) {
fd, err := os.Create(out)
if err != nil {
log.Fatal(err)
}
zw := zip.NewWriter(fd)
for _, f := range files {
sf, err := os.Open(f.src)
if err != nil {
log.Fatal(err)
}
info, err := sf.Stat()
if err != nil {
log.Fatal(err)
}
fh, err := zip.FileInfoHeader(info)
if err != nil {
log.Fatal(err)
}
fh.Name = filepath.ToSlash(f.dst)
fh.Method = zip.Deflate
if strings.HasSuffix(f.dst, ".txt") {
// Text file. Read it and convert line endings.
bs, err := ioutil.ReadAll(sf)
if err != nil {
log.Fatal(err)
}
bs = bytes.Replace(bs, []byte{'\n'}, []byte{'\n', '\r'}, -1)
fh.UncompressedSize = uint32(len(bs))
fh.UncompressedSize64 = uint64(len(bs))
of, err := zw.CreateHeader(fh)
if err != nil {
log.Fatal(err)
}
of.Write(bs)
} else {
// Binary file. Copy verbatim.
of, err := zw.CreateHeader(fh)
if err != nil {
log.Fatal(err)
}
_, err = io.Copy(of, sf)
if err != nil {
log.Fatal(err)
}
}
}
err = zw.Close()
if err != nil {
log.Fatal(err)
}
err = fd.Close()
if err != nil {
log.Fatal(err)
}
}
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func macosCodesign(file string) {
if pass := os.Getenv("CODESIGN_KEYCHAIN_PASS"); pass != "" {
bs, err := runError("security", "unlock-keychain", "-p", pass)
if err != nil {
log.Println("Codesign: unlocking keychain failed:", string(bs))
return
}
}
if id := os.Getenv("CODESIGN_IDENTITY"); id != "" {
bs, err := runError("codesign", "-s", id, file)
if err != nil {
log.Println("Codesign: signing failed:", string(bs))
return
}
log.Println("Codesign: successfully signed", file)
}
}
func metalint(linters []string, dirs []string) {
ok := true
if isGometalinterInstalled() {
if !gometalinter(linters, dirs, lintExcludes...) {
ok = false
}
}
if !ok {
log.Fatal("Build succeeded, but there were lint warnings")
}
}
func isGometalinterInstalled() bool {
if _, err := runError("gometalinter", "--disable-all"); err != nil {
log.Println("gometalinter is not installed")
return false
}
return true
}
func gometalinter(linters []string, dirs []string, excludes ...string) bool {
params := []string{"--disable-all", "--concurrency=2", "--deadline=300s"}
for _, linter := range linters {
params = append(params, "--enable="+linter)
}
for _, exclude := range excludes {
params = append(params, "--exclude="+exclude)
}
for _, dir := range dirs {
params = append(params, dir)
}
bs, _ := runError("gometalinter", params...)
nerr := 0
lines := make(map[string]struct{})
for _, line := range strings.Split(string(bs), "\n") {
if line == "" {
continue
}
if _, ok := lines[line]; ok {
continue
}
log.Println(line)
if strings.Contains(line, "executable file not found") {
log.Println(` - Try "go run build.go setup" to install missing tools`)
}
lines[line] = struct{}{}
nerr++
}
return nerr == 0
}