We should notify the user to pass the GOROOT env when invoking the client-gen

[spacewander]

We have noticed the client-gen failed to run sometimes in GitHub Action. After the investigation in mosn/htnn#687, we found that the GOROOT mismatching causes it.

The client-gen imports gengo, and gengo imports go/build. The go/build module will invoke the go toolchain to generate the go code. If the GOROOT is not given as the env var, go/build will use the builtin default GOROOT to look up the go toolchain.

This brings a problem when the client-gen is built with a go compiler A and then executed on a machine that has a go compiler B, the builtin GOROOT is different from the real GOROOT, causes fork/exec xxx/go: no such file or directory error.

To avoid such an error, we should notify the user to pass the GOROOT env when invoking the client-gen, so the environment to build client-gen doesn't impact the environment to use client-gen. For example, GOROOT=$(go env GOROOT) client-gen ....

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/lifecycle stale

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/lifecycle rotten

[k8s-triage-robot]

The Kubernetes project currently lacks enough active contributors to adequately respond to all issues and PRs.

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• After 90d of inactivity, lifecycle/stale is applied
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/close not-planned

[k8s-ci-robot]

@k8s-triage-robot: Closing this issue, marking it as "Not Planned".

In response to this:

The Kubernetes project currently lacks enough active contributors to adequately respond to all issues and PRs.

This bot triages issues according to the following rules:

• After 90d of inactivity, lifecycle/stale is applied
• After 30d of inactivity since lifecycle/stale was applied, lifecycle/rotten is applied
• After 30d of inactivity since lifecycle/rotten was applied, the issue is closed

You can:

• Reopen this issue with /reopen
• Mark this issue as fresh with /remove-lifecycle rotten
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/close not-planned

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