1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
|
// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package main
import (
"flag"
"fmt"
"os"
"runtime"
"strings"
)
func usage() {
xprintf(`usage: go tool dist [command]
Commands are:
banner print installation banner
bootstrap rebuild everything
clean deletes all built files
env [-p] print environment (-p: include $PATH)
install [dir] install individual directory
list [-json] list all supported platforms
test [-h] run Go test(s)
version print Go version
All commands take -v flags to emit extra information.
`)
xexit(2)
}
// commands records the available commands.
var commands = map[string]func(){
"banner": cmdbanner,
"bootstrap": cmdbootstrap,
"clean": cmdclean,
"env": cmdenv,
"install": cmdinstall,
"list": cmdlist,
"test": cmdtest,
"version": cmdversion,
}
// main takes care of OS-specific startup and dispatches to xmain.
func main() {
os.Setenv("TERM", "dumb") // disable escape codes in clang errors
// provide -check-armv6k first, before checking for $GOROOT so that
// it is possible to run this check without having $GOROOT available.
if len(os.Args) > 1 && os.Args[1] == "-check-armv6k" {
useARMv6K() // might fail with SIGILL
println("ARMv6K supported.")
os.Exit(0)
}
gohostos = runtime.GOOS
switch gohostos {
case "aix":
// uname -m doesn't work under AIX
gohostarch = "ppc64"
case "darwin":
// macOS 10.9 and later require clang
defaultclang = true
case "freebsd":
// Since FreeBSD 10 gcc is no longer part of the base system.
defaultclang = true
case "openbsd":
// OpenBSD ships with GCC 4.2, which is now quite old.
defaultclang = true
case "plan9":
gohostarch = os.Getenv("objtype")
if gohostarch == "" {
fatalf("$objtype is unset")
}
case "solaris", "illumos":
// Solaris and illumos systems have multi-arch userlands, and
// "uname -m" reports the machine hardware name; e.g.,
// "i86pc" on both 32- and 64-bit x86 systems. Check for the
// native (widest) instruction set on the running kernel:
out := run("", CheckExit, "isainfo", "-n")
if strings.Contains(out, "amd64") {
gohostarch = "amd64"
}
if strings.Contains(out, "i386") {
gohostarch = "386"
}
case "windows":
exe = ".exe"
}
sysinit()
if gohostarch == "" {
// Default Unix system.
out := run("", CheckExit, "uname", "-m")
switch {
case strings.Contains(out, "x86_64"), strings.Contains(out, "amd64"):
gohostarch = "amd64"
case strings.Contains(out, "86"):
gohostarch = "386"
if gohostos == "darwin" {
// Even on 64-bit platform, some versions of macOS uname -m prints i386.
// We don't support any of the OS X versions that run on 32-bit-only hardware anymore.
gohostarch = "amd64"
}
case strings.Contains(out, "aarch64"), strings.Contains(out, "arm64"):
gohostarch = "arm64"
case strings.Contains(out, "arm"):
gohostarch = "arm"
if gohostos == "netbsd" && strings.Contains(run("", CheckExit, "uname", "-p"), "aarch64") {
gohostarch = "arm64"
}
case strings.Contains(out, "ppc64le"):
gohostarch = "ppc64le"
case strings.Contains(out, "ppc64"):
gohostarch = "ppc64"
case strings.Contains(out, "mips64"):
gohostarch = "mips64"
if elfIsLittleEndian(os.Args[0]) {
gohostarch = "mips64le"
}
case strings.Contains(out, "mips"):
gohostarch = "mips"
if elfIsLittleEndian(os.Args[0]) {
gohostarch = "mipsle"
}
case strings.Contains(out, "riscv64"):
gohostarch = "riscv64"
case strings.Contains(out, "s390x"):
gohostarch = "s390x"
case gohostos == "darwin":
if strings.Contains(run("", CheckExit, "uname", "-v"), "RELEASE_ARM64_") {
gohostarch = "arm64"
}
default:
fatalf("unknown architecture: %s", out)
}
}
if gohostarch == "arm" || gohostarch == "mips64" || gohostarch == "mips64le" {
maxbg = min(maxbg, runtime.NumCPU())
}
bginit()
if len(os.Args) > 1 && os.Args[1] == "-check-goarm" {
useVFPv1() // might fail with SIGILL
println("VFPv1 OK.")
useVFPv3() // might fail with SIGILL
println("VFPv3 OK.")
os.Exit(0)
}
xinit()
xmain()
xexit(0)
}
// The OS-specific main calls into the portable code here.
func xmain() {
if len(os.Args) < 2 {
usage()
}
cmd := os.Args[1]
os.Args = os.Args[1:] // for flag parsing during cmd
flag.Usage = func() {
fmt.Fprintf(os.Stderr, "usage: go tool dist %s [options]\n", cmd)
flag.PrintDefaults()
os.Exit(2)
}
if f, ok := commands[cmd]; ok {
f()
} else {
xprintf("unknown command %s\n", cmd)
usage()
}
}
|
