overdue
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bel
297
.rclone_repo/bin/cross-compile.go
Executable file
297
.rclone_repo/bin/cross-compile.go
Executable file
@@ -0,0 +1,297 @@
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// +build ignore
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// Cross compile rclone - in go because I hate bash ;-)
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package main
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import (
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"flag"
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"fmt"
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"io/ioutil"
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"log"
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"os"
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"os/exec"
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"path"
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"path/filepath"
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"regexp"
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"runtime"
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"sort"
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"strings"
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"sync"
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"text/template"
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"time"
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)
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var (
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// Flags
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debug = flag.Bool("d", false, "Print commands instead of running them.")
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parallel = flag.Int("parallel", runtime.NumCPU(), "Number of commands to run in parallel.")
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copyAs = flag.String("release", "", "Make copies of the releases with this name")
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gitLog = flag.String("git-log", "", "git log to include as well")
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include = flag.String("include", "^.*$", "os/arch regexp to include")
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exclude = flag.String("exclude", "^$", "os/arch regexp to exclude")
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cgo = flag.Bool("cgo", false, "Use cgo for the build")
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noClean = flag.Bool("no-clean", false, "Don't clean the build directory before running.")
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tags = flag.String("tags", "", "Space separated list of build tags")
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compileOnly = flag.Bool("compile-only", false, "Just build the binary, not the zip.")
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)
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// GOOS/GOARCH pairs we build for
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var osarches = []string{
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"windows/386",
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"windows/amd64",
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"darwin/386",
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"darwin/amd64",
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"linux/386",
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"linux/amd64",
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"linux/arm",
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"linux/arm64",
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"linux/mips",
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"linux/mipsle",
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"freebsd/386",
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"freebsd/amd64",
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"freebsd/arm",
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"netbsd/386",
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"netbsd/amd64",
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"netbsd/arm",
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"openbsd/386",
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"openbsd/amd64",
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"plan9/386",
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"plan9/amd64",
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"solaris/amd64",
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}
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// Special environment flags for a given arch
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var archFlags = map[string][]string{
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"386": {"GO386=387"},
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}
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// runEnv - run a shell command with env
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func runEnv(args, env []string) error {
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if *debug {
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args = append([]string{"echo"}, args...)
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}
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cmd := exec.Command(args[0], args[1:]...)
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if env != nil {
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cmd.Env = append(os.Environ(), env...)
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}
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if *debug {
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log.Printf("args = %v, env = %v\n", args, cmd.Env)
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}
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out, err := cmd.CombinedOutput()
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if err != nil {
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log.Print("----------------------------")
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log.Printf("Failed to run %v: %v", args, err)
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log.Printf("Command output was:\n%s", out)
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log.Print("----------------------------")
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}
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return err
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}
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// run a shell command
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func run(args ...string) {
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err := runEnv(args, nil)
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if err != nil {
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log.Fatalf("Exiting after error: %v", err)
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}
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}
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// chdir or die
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func chdir(dir string) {
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err := os.Chdir(dir)
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if err != nil {
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log.Fatalf("Couldn't cd into %q: %v", dir, err)
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}
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}
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// substitute data from go template file in to file out
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func substitute(inFile, outFile string, data interface{}) {
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t, err := template.ParseFiles(inFile)
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if err != nil {
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log.Fatalf("Failed to read template file %q: %v %v", inFile, err)
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}
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out, err := os.Create(outFile)
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if err != nil {
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log.Fatalf("Failed to create output file %q: %v %v", outFile, err)
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}
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defer func() {
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err := out.Close()
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if err != nil {
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log.Fatalf("Failed to close output file %q: %v %v", outFile, err)
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}
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}()
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err = t.Execute(out, data)
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if err != nil {
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log.Fatalf("Failed to substitute template file %q: %v %v", inFile, err)
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}
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}
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// build the zip package return its name
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func buildZip(dir string) string {
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// Now build the zip
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run("cp", "-a", "../MANUAL.txt", filepath.Join(dir, "README.txt"))
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run("cp", "-a", "../MANUAL.html", filepath.Join(dir, "README.html"))
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run("cp", "-a", "../rclone.1", dir)
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if *gitLog != "" {
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run("cp", "-a", *gitLog, dir)
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}
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zip := dir + ".zip"
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run("zip", "-r9", zip, dir)
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return zip
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}
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// Build .deb and .rpm packages
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//
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// It returns a list of artifacts it has made
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func buildDebAndRpm(dir, version, goarch string) []string {
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// Make internal version number acceptable to .deb and .rpm
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pkgVersion := version[1:]
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pkgVersion = strings.Replace(pkgVersion, "β", "-beta", -1)
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pkgVersion = strings.Replace(pkgVersion, "-", ".", -1)
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// Make nfpm.yaml from the template
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substitute("../bin/nfpm.yaml", path.Join(dir, "nfpm.yaml"), map[string]string{
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"Version": pkgVersion,
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"Arch": goarch,
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})
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// build them
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var artifacts []string
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for _, pkg := range []string{".deb", ".rpm"} {
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artifact := dir + pkg
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run("bash", "-c", "cd "+dir+" && nfpm -f nfpm.yaml pkg -t ../"+artifact)
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artifacts = append(artifacts, artifact)
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}
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return artifacts
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}
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// build the binary in dir returning success or failure
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func compileArch(version, goos, goarch, dir string) bool {
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log.Printf("Compiling %s/%s", goos, goarch)
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output := filepath.Join(dir, "rclone")
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if goos == "windows" {
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output += ".exe"
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}
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err := os.MkdirAll(dir, 0777)
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if err != nil {
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log.Fatalf("Failed to mkdir: %v", err)
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}
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args := []string{
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"go", "build",
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"--ldflags", "-s -X github.com/ncw/rclone/fs.Version=" + version,
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"-i",
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"-o", output,
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"-tags", *tags,
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"..",
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}
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env := []string{
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"GOOS=" + goos,
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"GOARCH=" + goarch,
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}
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if !*cgo {
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env = append(env, "CGO_ENABLED=0")
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} else {
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env = append(env, "CGO_ENABLED=1")
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}
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if flags, ok := archFlags[goarch]; ok {
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env = append(env, flags...)
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}
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err = runEnv(args, env)
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if err != nil {
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log.Printf("Error compiling %s/%s: %v", goos, goarch, err)
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return false
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}
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if !*compileOnly {
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artifacts := []string{buildZip(dir)}
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// build a .deb and .rpm if appropriate
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if goos == "linux" {
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artifacts = append(artifacts, buildDebAndRpm(dir, version, goarch)...)
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}
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if *copyAs != "" {
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for _, artifact := range artifacts {
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run("ln", artifact, strings.Replace(artifact, "-"+version, "-"+*copyAs, 1))
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}
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}
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// tidy up
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run("rm", "-rf", dir)
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}
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log.Printf("Done compiling %s/%s", goos, goarch)
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return true
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}
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func compile(version string) {
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start := time.Now()
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wg := new(sync.WaitGroup)
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run := make(chan func(), *parallel)
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for i := 0; i < *parallel; i++ {
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wg.Add(1)
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go func() {
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defer wg.Done()
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for f := range run {
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f()
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}
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}()
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}
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includeRe, err := regexp.Compile(*include)
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if err != nil {
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log.Fatalf("Bad -include regexp: %v", err)
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}
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excludeRe, err := regexp.Compile(*exclude)
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if err != nil {
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log.Fatalf("Bad -exclude regexp: %v", err)
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}
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compiled := 0
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var failuresMu sync.Mutex
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var failures []string
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for _, osarch := range osarches {
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if excludeRe.MatchString(osarch) || !includeRe.MatchString(osarch) {
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continue
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}
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parts := strings.Split(osarch, "/")
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if len(parts) != 2 {
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log.Fatalf("Bad osarch %q", osarch)
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}
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goos, goarch := parts[0], parts[1]
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userGoos := goos
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if goos == "darwin" {
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userGoos = "osx"
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}
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dir := filepath.Join("rclone-" + version + "-" + userGoos + "-" + goarch)
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run <- func() {
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if !compileArch(version, goos, goarch, dir) {
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failuresMu.Lock()
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failures = append(failures, goos+"/"+goarch)
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failuresMu.Unlock()
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}
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}
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compiled++
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}
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close(run)
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wg.Wait()
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log.Printf("Compiled %d arches in %v", compiled, time.Since(start))
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if len(failures) > 0 {
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sort.Strings(failures)
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log.Printf("%d compile failures:\n %s\n", len(failures), strings.Join(failures, "\n "))
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os.Exit(1)
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}
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}
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func main() {
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flag.Parse()
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args := flag.Args()
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if len(args) != 1 {
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log.Fatalf("Syntax: %s <version>", os.Args[0])
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}
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version := args[0]
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if !*noClean {
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run("rm", "-rf", "build")
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run("mkdir", "build")
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}
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chdir("build")
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err := ioutil.WriteFile("version.txt", []byte(fmt.Sprintf("rclone %s\n", version)), 0666)
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if err != nil {
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log.Fatalf("Couldn't write version.txt: %v", err)
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}
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compile(version)
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}
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