mirror of
https://github.com/golang/go
synced 2024-11-20 08:54:40 -07:00
cmd/dist: move functions for the better
This belongs to a series of clean-up changes (see below) for cmd/dist. This is change (6). These changes include: (1) apply minor fixes (2) restore behavior of branchtag (3) unleash bootstrap optimization for windows (4) use standard generated code header (5) remove trivial variables + functions (6) move functions for the better (7) simplify code segments (8) use bytes.Buffer for code generation (9) rename variables + functions (10) remove doc.go Change-Id: I1c49e3427079194210a6416057100a7e94a37619 Reviewed-on: https://go-review.googlesource.com/61012 Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
This commit is contained in:
Marvin Stenger
Ian Lance Taylor
parent
6ea4cfb347
commit
401609c3ff
18
src/cmd/dist/build.go
vendored
18
src/cmd/dist/build.go
vendored
@ -942,24 +942,6 @@ func clean() {
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* command implementations
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*/
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func usage() {
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xprintf("usage: go tool dist [command]\n" +
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"Commands are:\n" +
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"\n" +
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"banner print installation banner\n" +
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"bootstrap rebuild everything\n" +
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"clean deletes all built files\n" +
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"env [-p] print environment (-p: include $PATH)\n" +
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"install [dir] install individual directory\n" +
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"list [-json] list all supported platforms\n" +
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"test [-h] run Go test(s)\n" +
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"version print Go version\n" +
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"\n" +
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"All commands take -v flags to emit extra information.\n",
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)
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xexit(2)
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}
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// The env command prints the default environment.
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func cmdenv() {
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path := flag.Bool("p", false, "emit updated PATH")
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177
src/cmd/dist/main.go
vendored
177
src/cmd/dist/main.go
vendored
@ -8,9 +8,29 @@ import (
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"flag"
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"fmt"
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"os"
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"runtime"
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"strconv"
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"strings"
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)
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func usage() {
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xprintf("usage: go tool dist [command]\n" +
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"Commands are:\n" +
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"\n" +
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"banner print installation banner\n" +
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"bootstrap rebuild everything\n" +
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"clean deletes all built files\n" +
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"env [-p] print environment (-p: include $PATH)\n" +
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"install [dir] install individual directory\n" +
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"list [-json] list all supported platforms\n" +
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"test [-h] run Go test(s)\n" +
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"version print Go version\n" +
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"\n" +
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"All commands take -v flags to emit extra information.\n",
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)
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xexit(2)
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}
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// cmdtab records the available commands.
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var cmdtab = []struct {
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name string
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@ -26,6 +46,125 @@ var cmdtab = []struct {
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{"version", cmdversion},
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}
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// main takes care of OS-specific startup and dispatches to xmain.
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func main() {
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os.Setenv("TERM", "dumb") // disable escape codes in clang errors
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// provide -check-armv6k first, before checking for $GOROOT so that
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// it is possible to run this check without having $GOROOT available.
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if len(os.Args) > 1 && os.Args[1] == "-check-armv6k" {
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useARMv6K() // might fail with SIGILL
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println("ARMv6K supported.")
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os.Exit(0)
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}
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gohostos = runtime.GOOS
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switch gohostos {
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case "darwin":
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// Even on 64-bit platform, darwin uname -m prints i386.
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// We don't support any of the OS X versions that run on 32-bit-only hardware anymore.
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gohostarch = "amd64"
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case "freebsd":
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// Since FreeBSD 10 gcc is no longer part of the base system.
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defaultclang = true
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case "solaris":
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// Even on 64-bit platform, solaris uname -m prints i86pc.
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out := run("", CheckExit, "isainfo", "-n")
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if strings.Contains(out, "amd64") {
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gohostarch = "amd64"
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}
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if strings.Contains(out, "i386") {
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gohostarch = "386"
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}
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case "plan9":
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gohostarch = os.Getenv("objtype")
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if gohostarch == "" {
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fatal("$objtype is unset")
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}
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case "windows":
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exe = ".exe"
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}
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sysinit()
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if gohostarch == "" {
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// Default Unix system.
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out := run("", CheckExit, "uname", "-m")
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switch {
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case strings.Contains(out, "x86_64"), strings.Contains(out, "amd64"):
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gohostarch = "amd64"
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case strings.Contains(out, "86"):
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gohostarch = "386"
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case strings.Contains(out, "arm"):
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gohostarch = "arm"
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case strings.Contains(out, "aarch64"):
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gohostarch = "arm64"
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case strings.Contains(out, "ppc64le"):
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gohostarch = "ppc64le"
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case strings.Contains(out, "ppc64"):
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gohostarch = "ppc64"
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case strings.Contains(out, "mips64"):
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gohostarch = "mips64"
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if elfIsLittleEndian(os.Args[0]) {
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gohostarch = "mips64le"
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}
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case strings.Contains(out, "mips"):
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gohostarch = "mips"
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if elfIsLittleEndian(os.Args[0]) {
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gohostarch = "mipsle"
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}
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case strings.Contains(out, "s390x"):
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gohostarch = "s390x"
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case gohostos == "darwin":
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if strings.Contains(run("", CheckExit, "uname", "-v"), "RELEASE_ARM_") {
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gohostarch = "arm"
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}
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default:
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fatal("unknown architecture: %s", out)
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}
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}
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if gohostarch == "arm" || gohostarch == "mips64" || gohostarch == "mips64le" {
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maxbg = min(maxbg, runtime.NumCPU())
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}
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bginit()
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// The OS X 10.6 linker does not support external linking mode.
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// See golang.org/issue/5130.
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//
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// OS X 10.6 does not work with clang either, but OS X 10.9 requires it.
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// It seems to work with OS X 10.8, so we default to clang for 10.8 and later.
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// See golang.org/issue/5822.
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//
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// Roughly, OS X 10.N shows up as uname release (N+4),
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// so OS X 10.6 is uname version 10 and OS X 10.8 is uname version 12.
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if gohostos == "darwin" {
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rel := run("", CheckExit, "uname", "-r")
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if i := strings.Index(rel, "."); i >= 0 {
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rel = rel[:i]
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}
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osx, _ := strconv.Atoi(rel)
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if osx <= 6+4 {
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goextlinkenabled = "0"
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}
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if osx >= 8+4 {
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defaultclang = true
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}
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}
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if len(os.Args) > 1 && os.Args[1] == "-check-goarm" {
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useVFPv1() // might fail with SIGILL
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println("VFPv1 OK.")
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useVFPv3() // might fail with SIGILL
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println("VFPv3 OK.")
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os.Exit(0)
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}
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xinit()
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xmain()
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xexit(0)
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}
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// The OS-specific main calls into the portable code here.
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func xmain() {
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if len(os.Args) < 2 {
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@ -44,44 +183,6 @@ func xmain() {
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return
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}
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}
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xprintf("unknown command %s\n", cmd)
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usage()
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}
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func xflagparse(maxargs int) {
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flag.Var((*count)(&vflag), "v", "verbosity")
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flag.Parse()
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if maxargs >= 0 && flag.NArg() > maxargs {
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flag.Usage()
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}
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}
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// count is a flag.Value that is like a flag.Bool and a flag.Int.
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// If used as -name, it increments the count, but -name=x sets the count.
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// Used for verbose flag -v.
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type count int
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func (c *count) String() string {
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return fmt.Sprint(int(*c))
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}
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func (c *count) Set(s string) error {
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switch s {
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case "true":
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*c++
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case "false":
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*c = 0
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default:
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n, err := strconv.Atoi(s)
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if err != nil {
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return fmt.Errorf("invalid count %q", s)
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}
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*c = count(n)
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}
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return nil
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}
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func (c *count) IsBoolFlag() bool {
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return true
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}
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158
src/cmd/dist/util.go
vendored
158
src/cmd/dist/util.go
vendored
@ -6,13 +6,13 @@ package main
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import (
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"bytes"
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"flag"
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"fmt"
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"io"
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"io/ioutil"
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"os"
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"os/exec"
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"path/filepath"
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"runtime"
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"sort"
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"strconv"
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"strings"
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@ -372,125 +372,6 @@ func errprintf(format string, args ...interface{}) {
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fmt.Fprintf(os.Stderr, format, args...)
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}
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// main takes care of OS-specific startup and dispatches to xmain.
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func main() {
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os.Setenv("TERM", "dumb") // disable escape codes in clang errors
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// provide -check-armv6k first, before checking for $GOROOT so that
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// it is possible to run this check without having $GOROOT available.
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if len(os.Args) > 1 && os.Args[1] == "-check-armv6k" {
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useARMv6K() // might fail with SIGILL
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println("ARMv6K supported.")
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os.Exit(0)
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}
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gohostos = runtime.GOOS
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switch gohostos {
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case "darwin":
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// Even on 64-bit platform, darwin uname -m prints i386.
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// We don't support any of the OS X versions that run on 32-bit-only hardware anymore.
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gohostarch = "amd64"
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case "freebsd":
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// Since FreeBSD 10 gcc is no longer part of the base system.
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defaultclang = true
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case "solaris":
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// Even on 64-bit platform, solaris uname -m prints i86pc.
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out := run("", CheckExit, "isainfo", "-n")
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if strings.Contains(out, "amd64") {
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gohostarch = "amd64"
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}
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if strings.Contains(out, "i386") {
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gohostarch = "386"
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}
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case "plan9":
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gohostarch = os.Getenv("objtype")
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if gohostarch == "" {
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fatal("$objtype is unset")
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}
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case "windows":
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exe = ".exe"
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}
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sysinit()
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if gohostarch == "" {
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// Default Unix system.
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out := run("", CheckExit, "uname", "-m")
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switch {
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case strings.Contains(out, "x86_64"), strings.Contains(out, "amd64"):
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gohostarch = "amd64"
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case strings.Contains(out, "86"):
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gohostarch = "386"
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case strings.Contains(out, "arm"):
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gohostarch = "arm"
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case strings.Contains(out, "aarch64"):
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gohostarch = "arm64"
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case strings.Contains(out, "ppc64le"):
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gohostarch = "ppc64le"
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case strings.Contains(out, "ppc64"):
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gohostarch = "ppc64"
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case strings.Contains(out, "mips64"):
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gohostarch = "mips64"
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if elfIsLittleEndian(os.Args[0]) {
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gohostarch = "mips64le"
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}
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case strings.Contains(out, "mips"):
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gohostarch = "mips"
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if elfIsLittleEndian(os.Args[0]) {
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gohostarch = "mipsle"
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}
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case strings.Contains(out, "s390x"):
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gohostarch = "s390x"
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case gohostos == "darwin":
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if strings.Contains(run("", CheckExit, "uname", "-v"), "RELEASE_ARM_") {
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gohostarch = "arm"
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}
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default:
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fatal("unknown architecture: %s", out)
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}
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}
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if gohostarch == "arm" || gohostarch == "mips64" || gohostarch == "mips64le" {
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maxbg = min(maxbg, runtime.NumCPU())
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}
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bginit()
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// The OS X 10.6 linker does not support external linking mode.
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// See golang.org/issue/5130.
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//
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// OS X 10.6 does not work with clang either, but OS X 10.9 requires it.
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// It seems to work with OS X 10.8, so we default to clang for 10.8 and later.
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// See golang.org/issue/5822.
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//
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// Roughly, OS X 10.N shows up as uname release (N+4),
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// so OS X 10.6 is uname version 10 and OS X 10.8 is uname version 12.
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if gohostos == "darwin" {
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rel := run("", CheckExit, "uname", "-r")
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if i := strings.Index(rel, "."); i >= 0 {
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rel = rel[:i]
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}
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osx, _ := strconv.Atoi(rel)
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if osx <= 6+4 {
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goextlinkenabled = "0"
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}
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if osx >= 8+4 {
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defaultclang = true
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}
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}
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if len(os.Args) > 1 && os.Args[1] == "-check-goarm" {
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useVFPv1() // might fail with SIGILL
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println("VFPv1 OK.")
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useVFPv3() // might fail with SIGILL
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println("VFPv3 OK.")
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os.Exit(0)
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}
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xinit()
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xmain()
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xexit(0)
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}
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// xsamefile reports whether f1 and f2 are the same file (or dir)
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func xsamefile(f1, f2 string) bool {
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fi1, err1 := os.Stat(f1)
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@ -569,3 +450,40 @@ func elfIsLittleEndian(fn string) bool {
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}
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panic("unreachable")
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}
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// count is a flag.Value that is like a flag.Bool and a flag.Int.
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// If used as -name, it increments the count, but -name=x sets the count.
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// Used for verbose flag -v.
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type count int
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func (c *count) String() string {
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return fmt.Sprint(int(*c))
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}
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func (c *count) Set(s string) error {
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switch s {
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case "true":
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*c++
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case "false":
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*c = 0
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default:
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n, err := strconv.Atoi(s)
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if err != nil {
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return fmt.Errorf("invalid count %q", s)
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}
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*c = count(n)
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}
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return nil
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}
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func (c *count) IsBoolFlag() bool {
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return true
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}
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func xflagparse(maxargs int) {
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flag.Var((*count)(&vflag), "v", "verbosity")
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flag.Parse()
|
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if maxargs >= 0 && flag.NArg() > maxargs {
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flag.Usage()
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}
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||||
}
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Block a user