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build.go
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build.go
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// Copyright (C) 2014 The Syncthing Authors.
//
// 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/.
// +build ignore
package main
import (
"archive/tar"
"archive/zip"
"bytes"
"compress/flate"
"compress/gzip"
"crypto/sha256"
"errors"
"flag"
"fmt"
"io"
"io/ioutil"
"log"
"os"
"os/exec"
"os/user"
"path"
"path/filepath"
"regexp"
"runtime"
"strconv"
"strings"
"text/template"
"time"
)
var (
versionRe = regexp.MustCompile(`-[0-9]{1,3}-g[0-9a-f]{5,10}`)
goarch string
goos string
noupgrade bool
version string
goCmd string
goVersion float64
race bool
debug = os.Getenv("BUILDDEBUG") != ""
extraTags string
installSuffix string
pkgdir string
cc string
debugBinary bool
coverage bool
timeout = "120s"
)
type target struct {
name string
debname string
debdeps []string
debpre string
debpost string
description string
buildPkgs []string
binaryName string
archiveFiles []archiveFile
systemdServices []string
installationFiles []archiveFile
tags []string
}
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. buildPkgs gets filled out in init()
tags: []string{"purego"},
},
"syncthing": {
// The default target for "build", "install", "tar", "zip", "deb", etc.
name: "syncthing",
debname: "syncthing",
debdeps: []string{"libc6", "procps"},
debpost: "script/post-upgrade",
description: "Open Source Continuous File Synchronization",
buildPkgs: []string{"github.com/syncthing/syncthing/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{
{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/[email protected]", dst: "deb/lib/systemd/system/[email protected]", 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},
{src: "etc/linux-desktop/syncthing-start.desktop", dst: "deb/usr/share/applications/syncthing-start.desktop", perm: 0644},
{src: "etc/linux-desktop/syncthing-ui.desktop", dst: "deb/usr/share/applications/syncthing-ui.desktop", perm: 0644},
{src: "assets/logo-32.png", dst: "deb/usr/share/icons/hicolor/32x32/apps/syncthing.png", perm: 0644},
{src: "assets/logo-64.png", dst: "deb/usr/share/icons/hicolor/64x64/apps/syncthing.png", perm: 0644},
{src: "assets/logo-128.png", dst: "deb/usr/share/icons/hicolor/128x128/apps/syncthing.png", perm: 0644},
{src: "assets/logo-256.png", dst: "deb/usr/share/icons/hicolor/256x256/apps/syncthing.png", perm: 0644},
{src: "assets/logo-512.png", dst: "deb/usr/share/icons/hicolor/512x512/apps/syncthing.png", perm: 0644},
{src: "assets/logo-only.svg", dst: "deb/usr/share/icons/hicolor/scalable/apps/syncthing.svg", perm: 0644},
},
},
"stdiscosrv": {
name: "stdiscosrv",
debname: "syncthing-discosrv",
debdeps: []string{"libc6"},
debpre: "cmd/stdiscosrv/scripts/preinst",
description: "Syncthing Discovery Server",
buildPkgs: []string{"github.com/syncthing/syncthing/cmd/stdiscosrv"},
binaryName: "stdiscosrv", // .exe will be added automatically for Windows builds
archiveFiles: []archiveFile{
{src: "{{binary}}", dst: "{{binary}}", perm: 0755},
{src: "cmd/stdiscosrv/README.md", dst: "README.txt", perm: 0644},
{src: "LICENSE", dst: "LICENSE.txt", perm: 0644},
{src: "AUTHORS", dst: "AUTHORS.txt", perm: 0644},
},
systemdServices: []string{
"cmd/stdiscosrv/etc/linux-systemd/stdiscosrv.service",
},
installationFiles: []archiveFile{
{src: "{{binary}}", dst: "deb/usr/bin/{{binary}}", perm: 0755},
{src: "cmd/stdiscosrv/README.md", dst: "deb/usr/share/doc/syncthing-discosrv/README.txt", perm: 0644},
{src: "LICENSE", dst: "deb/usr/share/doc/syncthing-discosrv/LICENSE.txt", perm: 0644},
{src: "AUTHORS", dst: "deb/usr/share/doc/syncthing-discosrv/AUTHORS.txt", perm: 0644},
{src: "man/stdiscosrv.1", dst: "deb/usr/share/man/man1/stdiscosrv.1", perm: 0644},
{src: "cmd/stdiscosrv/etc/linux-systemd/default", dst: "deb/etc/default/syncthing-discosrv", perm: 0644},
{src: "cmd/stdiscosrv/etc/firewall-ufw/stdiscosrv", dst: "deb/etc/ufw/applications.d/stdiscosrv", perm: 0644},
},
tags: []string{"purego"},
},
"strelaysrv": {
name: "strelaysrv",
debname: "syncthing-relaysrv",
debdeps: []string{"libc6"},
debpre: "cmd/strelaysrv/scripts/preinst",
description: "Syncthing Relay Server",
buildPkgs: []string{"github.com/syncthing/syncthing/cmd/strelaysrv"},
binaryName: "strelaysrv", // .exe will be added automatically for Windows builds
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},
{src: "LICENSE", dst: "LICENSE.txt", perm: 0644},
{src: "AUTHORS", dst: "AUTHORS.txt", perm: 0644},
},
systemdServices: []string{
"cmd/strelaysrv/etc/linux-systemd/strelaysrv.service",
},
installationFiles: []archiveFile{
{src: "{{binary}}", dst: "deb/usr/bin/{{binary}}", perm: 0755},
{src: "cmd/strelaysrv/README.md", dst: "deb/usr/share/doc/syncthing-relaysrv/README.txt", perm: 0644},
{src: "cmd/strelaysrv/LICENSE", dst: "deb/usr/share/doc/syncthing-relaysrv/LICENSE.txt", perm: 0644},
{src: "LICENSE", dst: "deb/usr/share/doc/syncthing-relaysrv/LICENSE.txt", perm: 0644},
{src: "AUTHORS", dst: "deb/usr/share/doc/syncthing-relaysrv/AUTHORS.txt", perm: 0644},
{src: "man/strelaysrv.1", dst: "deb/usr/share/man/man1/strelaysrv.1", perm: 0644},
{src: "cmd/strelaysrv/etc/linux-systemd/default", dst: "deb/etc/default/syncthing-relaysrv", perm: 0644},
{src: "cmd/strelaysrv/etc/firewall-ufw/strelaysrv", dst: "deb/etc/ufw/applications.d/strelaysrv", perm: 0644},
},
},
"strelaypoolsrv": {
name: "strelaypoolsrv",
debname: "syncthing-relaypoolsrv",
debdeps: []string{"libc6"},
description: "Syncthing Relay Pool Server",
buildPkgs: []string{"github.com/syncthing/syncthing/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{
{src: "{{binary}}", dst: "deb/usr/bin/{{binary}}", perm: 0755},
{src: "cmd/strelaypoolsrv/README.md", dst: "deb/usr/share/doc/syncthing-relaypoolsrv/README.txt", perm: 0644},
{src: "cmd/strelaypoolsrv/LICENSE", dst: "deb/usr/share/doc/syncthing-relaypoolsrv/LICENSE.txt", perm: 0644},
{src: "AUTHORS", dst: "deb/usr/share/doc/syncthing-relaypoolsrv/AUTHORS.txt", perm: 0644},
},
},
}
// These are repos we need to clone to run "go generate"
type dependencyRepo struct {
path string
repo string
commit string
}
var dependencyRepos = []dependencyRepo{
{path: "xdr", repo: "https://github.com/calmh/xdr.git", commit: "08e072f9cb16"},
}
func init() {
all := targets["all"]
pkgs, _ := filepath.Glob("cmd/*")
for _, pkg := range pkgs {
pkg = filepath.Base(pkg)
if strings.HasPrefix(pkg, ".") {
// ignore dotfiles
continue
}
all.buildPkgs = append(all.buildPkgs, fmt.Sprintf("github.com/syncthing/syncthing/cmd/%s", pkg))
}
targets["all"] = all
// 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})
}
targets["syncthing"] = syncthingPkg
}
func main() {
log.SetFlags(0)
parseFlags()
if debug {
t0 := time.Now()
defer func() {
log.Println("... build completed in", time.Since(t0))
}()
}
// Invoking build.go with no parameters at all builds everything (incrementally),
// 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)
}
runCommand(flag.Arg(0), target)
}
}
func runCommand(cmd string, target target) {
switch cmd {
case "install":
var tags []string
if noupgrade {
tags = []string{"noupgrade"}
}
tags = append(tags, strings.Fields(extraTags)...)
install(target, tags)
metalintShort()
case "build":
var tags []string
if noupgrade {
tags = []string{"noupgrade"}
}
tags = append(tags, strings.Fields(extraTags)...)
build(target, tags)
case "test":
test("github.com/syncthing/syncthing/lib/...", "github.com/syncthing/syncthing/cmd/...")
case "bench":
bench("github.com/syncthing/syncthing/lib/...", "github.com/syncthing/syncthing/cmd/...")
case "assets":
rebuildAssets()
case "proto":
proto()
case "translate":
translate()
case "transifex":
transifex()
case "tar":
buildTar(target)
case "zip":
buildZip(target)
case "deb":
buildDeb(target)
case "snap":
buildSnap(target)
case "vet":
metalintShort()
case "lint":
metalintShort()
case "metalint":
metalint()
case "version":
fmt.Println(getVersion())
default:
log.Fatalf("Unknown command %q", cmd)
}
}
func parseFlags() {
flag.StringVar(&goarch, "goarch", runtime.GOARCH, "GOARCH")
flag.StringVar(&goos, "goos", runtime.GOOS, "GOOS")
flag.StringVar(&goCmd, "gocmd", "go", "Specify `go` command")
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.StringVar(&extraTags, "tags", extraTags, "Extra tags, space separated")
flag.StringVar(&installSuffix, "installsuffix", installSuffix, "Install suffix, optional")
flag.StringVar(&pkgdir, "pkgdir", "", "Set -pkgdir parameter for `go build`")
flag.StringVar(&cc, "cc", os.Getenv("CC"), "Set CC environment variable for `go build`")
flag.BoolVar(&debugBinary, "debug-binary", debugBinary, "Create unoptimized binary to use with delve, set -gcflags='-N -l' and omit -ldflags")
flag.BoolVar(&coverage, "coverage", coverage, "Write coverage profile of tests to coverage.txt")
flag.Parse()
}
func test(pkgs ...string) {
lazyRebuildAssets()
args := []string{"test", "-short", "-timeout", timeout, "-tags", "purego"}
if runtime.GOARCH == "amd64" {
switch runtime.GOOS {
case "darwin", "linux", "freebsd": // , "windows": # See https://github.com/golang/go/issues/27089
args = append(args, "-race")
}
}
if coverage {
args = append(args, "-covermode", "atomic", "-coverprofile", "coverage.txt", "-coverpkg", strings.Join(pkgs, ","))
}
runPrint(goCmd, append(args, pkgs...)...)
}
func bench(pkgs ...string) {
lazyRebuildAssets()
runPrint(goCmd, append([]string{"test", "-run", "NONE", "-bench", "."}, pkgs...)...)
}
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"))
os.Setenv("GOOS", goos)
os.Setenv("GOARCH", goarch)
os.Setenv("CC", cc)
// On Windows generate a special file which the Go compiler will
// automatically use when generating Windows binaries to set things like
// the file icon, version, etc.
if goos == "windows" {
sysoPath, err := shouldBuildSyso(cwd)
if err != nil {
log.Printf("Warning: Windows binaries will not have file information encoded: %v", err)
}
defer shouldCleanupSyso(sysoPath)
}
for _, pkg := range target.buildPkgs {
args := []string{"install", "-v"}
args = appendParameters(args, tags, pkg)
runPrint(goCmd, args...)
}
}
func build(target target, tags []string) {
lazyRebuildAssets()
tags = append(target.tags, tags...)
rmr(target.BinaryName())
os.Setenv("GOOS", goos)
os.Setenv("GOARCH", goarch)
os.Setenv("CC", cc)
// On Windows generate a special file which the Go compiler will
// automatically use when generating Windows binaries to set things like
// the file icon, version, etc.
if goos == "windows" {
cwd, err := os.Getwd()
if err != nil {
log.Fatal(err)
}
sysoPath, err := shouldBuildSyso(cwd)
if err != nil {
log.Printf("Warning: Windows binaries will not have file information encoded: %v", err)
}
defer shouldCleanupSyso(sysoPath)
}
for _, pkg := range target.buildPkgs {
args := []string{"build", "-v"}
args = appendParameters(args, tags, pkg)
runPrint(goCmd, args...)
}
}
func appendParameters(args []string, tags []string, pkg string) []string {
if pkgdir != "" {
args = append(args, "-pkgdir", pkgdir)
}
if len(tags) > 0 {
args = append(args, "-tags", strings.Join(tags, " "))
}
if installSuffix != "" {
args = append(args, "-installsuffix", installSuffix)
}
if race {
args = append(args, "-race")
}
if !debugBinary {
// Regular binaries get version tagged and skip some debug symbols
args = append(args, "-ldflags", ldflags(path.Base(pkg)))
} else {
// -gcflags to disable optimizations and inlining. Skip -ldflags
// because `Could not launch program: decoding dwarf section info at
// offset 0x0: too short` on 'dlv exec ...' see
// https://github.com/derekparker/delve/issues/79
args = append(args, "-gcflags", "-N -l")
}
return append(args, pkg)
}
func buildTar(target target) {
name := archiveName(target)
filename := name + ".tar.gz"
var tags []string
if noupgrade {
tags = []string{"noupgrade"}
name += "-noupgrade"
}
build(target, tags)
codesign(target)
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
}
tarGz(filename, target.archiveFiles)
fmt.Println(filename)
}
func buildZip(target target) {
name := archiveName(target)
filename := name + ".zip"
var tags []string
if noupgrade {
tags = []string{"noupgrade"}
name += "-noupgrade"
}
build(target, tags)
codesign(target)
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
}
zipFile(filename, target.archiveFiles)
fmt.Println(filename)
}
func buildDeb(target target) {
os.RemoveAll("deb")
// "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".
debarch := goarch
switch goarch {
case "i386":
goarch = "386"
case "armel", "armhf":
goarch = "arm"
}
build(target, []string{"noupgrade"})
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)
}
for _, af := range target.installationFiles {
if err := copyFile(af.src, af.dst, af.perm); err != nil {
log.Fatal(err)
}
}
maintainer := "Syncthing Release Management <[email protected]>"
debver := version
if strings.HasPrefix(debver, "v") {
debver = debver[1:]
// Debian interprets dashes as separator between main version and
// Debian package version, and thus thinks 0.14.26-rc.1 is better
// than just 0.14.26. This rectifies that.
debver = strings.Replace(debver, "-", "~", -1)
}
args := []string{
"-t", "deb",
"-s", "dir",
"-C", "deb",
"-n", target.debname,
"-v", debver,
"-a", debarch,
"-m", maintainer,
"--vendor", maintainer,
"--description", target.description,
"--url", "https://syncthing.net/",
"--license", "MPL-2",
}
for _, dep := range target.debdeps {
args = append(args, "-d", dep)
}
for _, service := range target.systemdServices {
args = append(args, "--deb-systemd", service)
}
if target.debpost != "" {
args = append(args, "--after-upgrade", target.debpost)
}
if target.debpre != "" {
args = append(args, "--before-install", target.debpre)
}
runPrint("fpm", args...)
}
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"
} else if snaparch == "i386" {
goarch = "386"
}
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,
"HostArchitecture": runtime.GOARCH,
"TargetArchitecture": snaparch,
"Grade": snapgrade,
})
if err != nil {
log.Fatal(err)
}
runPrint("snapcraft", "clean")
build(target, []string{"noupgrade"})
runPrint("snapcraft")
}
func shouldBuildSyso(dir string) (string, error) {
jsonPath := filepath.Join(dir, "versioninfo.json")
file, err := os.Create(filepath.Join(dir, "versioninfo.json"))
if err != nil {
return "", errors.New("failed to create " + jsonPath + ": " + err.Error())
}
major, minor, patch, build := semanticVersion()
fmt.Fprintf(file, `{
"FixedFileInfo": {
"FileVersion": {
"Major": %s,
"Minor": %s,
"Patch": %s,
"Build": %s
}
},
"StringFileInfo": {
"FileDescription": "Open Source Continuous File Synchronization",
"LegalCopyright": "The Syncthing Authors",
"ProductVersion": "%s",
"ProductName": "Syncthing"
},
"IconPath": "assets/logo.ico"
}`, major, minor, patch, build, getVersion())
file.Close()
defer func() {
if err := os.Remove(jsonPath); err != nil {
log.Printf("Warning: unable to remove generated %s: %v. Please remove it manually.", jsonPath, err)
}
}()
sysoPath := filepath.Join(dir, "cmd", "syncthing", "resource.syso")
if _, err := runError("goversioninfo", "-o", sysoPath); err != nil {
return "", errors.New("failed to create " + sysoPath + ": " + err.Error())
}
return sysoPath, nil
}
func shouldCleanupSyso(sysoFilePath string) {
if sysoFilePath == "" {
return
}
if err := os.Remove(sysoFilePath); err != nil {
log.Printf("Warning: unable to remove generated %s: %v. Please remove it manually.", sysoFilePath, err)
}
}
// copyFile copies a file from src to dst, ensuring the containing directory
// exists. The permission bits are copied as well. If dst already exists and
// the contents are identical to src the modification time is not updated.
func copyFile(src, dst string, perm os.FileMode) error {
in, err := ioutil.ReadFile(src)
if err != nil {
return err
}
out, err := ioutil.ReadFile(dst)
if err != nil {
// The destination probably doesn't exist, we should create
// it.
goto copy
}
if bytes.Equal(in, out) {
// The permission bits may have changed without the contents
// changing so we always mirror them.
os.Chmod(dst, perm)
return nil
}
copy:
os.MkdirAll(filepath.Dir(dst), 0777)
if err := ioutil.WriteFile(dst, in, perm); err != nil {
return err
}
return nil
}
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() {
os.Setenv("SOURCE_DATE_EPOCH", fmt.Sprint(buildStamp()))
runPrint(goCmd, "generate", "github.com/syncthing/syncthing/lib/auto", "github.com/syncthing/syncthing/cmd/strelaypoolsrv/auto")
}
func lazyRebuildAssets() {
if shouldRebuildAssets("lib/auto/gui.files.go", "gui") || shouldRebuildAssets("cmd/strelaypoolsrv/auto/gui.files.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() {
pv := protobufVersion()
dependencyRepos = append(dependencyRepos,
dependencyRepo{path: "protobuf", repo: "https://github.com/gogo/protobuf.git", commit: pv},
)
runPrint(goCmd, "get", fmt.Sprintf("github.com/gogo/protobuf/protoc-gen-gogofast@%v", pv))
os.MkdirAll("repos", 0755)
for _, dep := range dependencyRepos {
path := filepath.Join("repos", dep.path)
if _, err := os.Stat(path); err != nil {
runPrintInDir("repos", "git", "clone", dep.repo, dep.path)
} else {
runPrintInDir(path, "git", "fetch")
}
runPrintInDir(path, "git", "checkout", dep.commit)
}
runPrint(goCmd, "generate", "github.com/syncthing/syncthing/lib/...", "github.com/syncthing/syncthing/cmd/stdiscosrv")
}
func translate() {
os.Chdir("gui/default/assets/lang")
runPipe("lang-en-new.json", goCmd, "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() {
os.Chdir("gui/default/assets/lang")
runPrint(goCmd, "run", "../../../../script/transifexdl.go")
}
func ldflags(program string) string {
sep := '='
if goVersion > 0 && goVersion < 1.5 {
sep = ' '
}
b := new(bytes.Buffer)
b.WriteString("-w")
fmt.Fprintf(b, " -X github.com/syncthing/syncthing/lib/build.Version%c%s", sep, version)
fmt.Fprintf(b, " -X github.com/syncthing/syncthing/lib/build.Stamp%c%d", sep, buildStamp())
fmt.Fprintf(b, " -X github.com/syncthing/syncthing/lib/build.User%c%s", sep, buildUser())
fmt.Fprintf(b, " -X github.com/syncthing/syncthing/lib/build.Host%c%s", sep, buildHost())
fmt.Fprintf(b, " -X github.com/syncthing/syncthing/lib/build.Program%c%s", sep, program)
if v := os.Getenv("EXTRA_LDFLAGS"); v != "" {
fmt.Fprintf(b, " %s", v)
}
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")
if err != nil {
return "", err
}
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 semanticVersion() (major, minor, patch, build string) {
r := regexp.MustCompile(`v(?P<Major>\d+)\.(?P<Minor>\d+).(?P<Patch>\d+).*\+(?P<CommitsAhead>\d+)`)
matches := r.FindStringSubmatch(getVersion())
if len(matches) != 5 {
return "0", "0", "0", "0"
}
return matches[1], matches[2], matches[3], matches[4]
}
func getBranchSuffix() string {
bs, err := runError("git", "branch", "-a", "--contains")
if err != nil {
return ""
}
branches := strings.Split(string(bs), "\n")
if len(branches) == 0 {
return ""
}
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".
parts := strings.Split(branch, "/")
if len(parts) == 0 || len(parts[len(parts)-1]) == 0 {
return ""
}
branch = parts[len(parts)-1]
switch branch {
case "master", "release":
// these are not special
return ""
}
validBranchRe := regexp.MustCompile(`^[a-zA-Z0-9_.-]+$`)
if !validBranchRe.MatchString(branch) {
// There's some odd stuff in the branch name. Better skip it.
return ""
}
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")
if err != nil {
// Fall back to "now".
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 = "macos"
}
return fmt.Sprintf("%s-%s", os, goarch)
}
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()
return bytes.TrimSpace(bs), err
}
func runPrint(cmd string, args ...string) {
runPrintInDir(".", cmd, args...)