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dist: generate stub go.mod in workdir

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...and run commands from there.

This removes the requirement that bootstrap must not run inside a module
by ensuring that enclosing modules do not interfere with bootstrap.

Fixes #44209.

Change-Id: I700a81829226770b8160c8ff04127b855b6e26bf
Reviewed-on: https://go-review.googlesource.com/c/go/+/296610
Trust: Jay Conrod <jayconrod@google.com>
Trust: Bryan C. Mills <bcmills@google.com>
Run-TryBot: Jay Conrod <jayconrod@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Jay Conrod <jayconrod@google.com>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
This commit is contained in:
Tamir Duberstein 2021-02-25 16:44:46 -05:00 committed by Jay Conrod
parent 97b32a6724
commit c6374f5162
1 changed files with 6 additions and 20 deletions
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26
src/cmd/dist/build.go vendored
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@ -111,9 +111,6 @@ func xinit() {
fatalf("$GOROOT must be set")
}
goroot = filepath.Clean(b)
if modRoot := findModuleRoot(goroot); modRoot != "" {
fatalf("found go.mod file in %s: $GOROOT must not be inside a module", modRoot)
}
b = os.Getenv("GOROOT_FINAL")
if b == "" {
@ -241,6 +238,9 @@ func xinit() {
os.Setenv("LANGUAGE", "en_US.UTF8")
workdir = xworkdir()
if err := ioutil.WriteFile(pathf("%s/go.mod", workdir), []byte("module bootstrap"), 0666); err != nil {
fatalf("cannot write stub go.mod: %s", err)
}
xatexit(rmworkdir)
tooldir = pathf("%s/pkg/tool/%s_%s", goroot, gohostos, gohostarch)
@ -1505,11 +1505,11 @@ func goCmd(goBinary string, cmd string, args ...string) {
goCmd = append(goCmd, "-p=1")
}
run(goroot, ShowOutput|CheckExit, append(goCmd, args...)...)
run(workdir, ShowOutput|CheckExit, append(goCmd, args...)...)
}
func checkNotStale(goBinary string, targets ...string) {
out := run(goroot, CheckExit,
out := run(workdir, CheckExit,
append([]string{
goBinary,
"list", "-gcflags=all=" + gogcflags, "-ldflags=all=" + goldflags,
@ -1519,7 +1519,7 @@ func checkNotStale(goBinary string, targets ...string) {
os.Setenv("GODEBUG", "gocachehash=1")
for _, target := range []string{"runtime/internal/sys", "cmd/dist", "cmd/link"} {
if strings.Contains(out, "STALE "+target) {
run(goroot, ShowOutput|CheckExit, goBinary, "list", "-f={{.ImportPath}} {{.Stale}}", target)
run(workdir, ShowOutput|CheckExit, goBinary, "list", "-f={{.ImportPath}} {{.Stale}}", target)
break
}
}
@ -1615,20 +1615,6 @@ func checkCC() {
}
}
func findModuleRoot(dir string) (root string) {
for {
if fi, err := os.Stat(filepath.Join(dir, "go.mod")); err == nil && !fi.IsDir() {
return dir
}
d := filepath.Dir(dir)
if d == dir {
break
}
dir = d
}
return ""
}
func defaulttarg() string {
// xgetwd might return a path with symlinks fully resolved, and if
// there happens to be symlinks in goroot, then the hasprefix test