36 lines
1.2 KiB
Diff
36 lines
1.2 KiB
Diff
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diff --git a/src/go/build/build.go b/src/go/build/build.go
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index d8163d0172..dd80a70473 100644
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--- a/src/go/build/build.go
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+++ b/src/go/build/build.go
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@@ -1592,7 +1592,7 @@ func init() {
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}
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// ToolDir is the directory containing build tools.
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-var ToolDir = filepath.Join(runtime.GOROOT(), "pkg/tool/"+runtime.GOOS+"_"+runtime.GOARCH)
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+var ToolDir = runtime.GOTOOLDIR()
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// IsLocalImport reports whether the import path is
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// a local import path, like ".", "..", "./foo", or "../foo".
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diff --git a/src/runtime/extern.go b/src/runtime/extern.go
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index 6e6c674d96..e9f62f96dc 100644
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--- a/src/runtime/extern.go
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+++ b/src/runtime/extern.go
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@@ -223,6 +223,17 @@ func GOROOT() string {
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return sys.DefaultGoroot
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}
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+// GOTOOLDIR returns the root of the Go tree.
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+// It uses the GOTOOLDIR environment variable, if set,
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+// or else the root used during the Go build.
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+func GOTOOLDIR() string {
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+ s := gogetenv("GOTOOLDIR")
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+ if s != "" {
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+ return s
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+ }
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+ return GOROOT() + "/pkg/tool/" + GOOS + "_" + GOARCH
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+}
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+
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// Version returns the Go tree's version string.
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// It is either the commit hash and date at the time of the build or,
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// when possible, a release tag like "go1.3".
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