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build: make go buildid static (#30342)

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The previous clearing of buildid did fully work, turns out we need to
set it in `ldflags`

The go buildid is the only remaining hurdle for reproducible builds, see
https://github.com/ethereum/go-ethereum/issues/28987#issuecomment-2306412590

This PR changes the go build id application note to say literally `none`

https://github.com/golang/go/issues/33772#issuecomment-528176001:

> This difference is due to the .note.go.buildid section added by the
linker. It can be set to something static e.g. -ldflags=-buildid= (empty
string) to gain reproducibility.
This commit is contained in:
Martin HS 2024-08-23 09:48:24 +02:00 committed by GitHub
parent 941ae33d7e
commit ada20c09dc
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4
build/ci.go
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@ -237,6 +237,10 @@ func doInstall(cmdline []string) {
// buildFlags returns the go tool flags for building.
func buildFlags(env build.Environment, staticLinking bool, buildTags []string) (flags []string) {
var ld []string
// See https://github.com/golang/go/issues/33772#issuecomment-528176001
// We need to set --buildid to the linker here, and also pass --build-id to the
// cgo-linker further down.
ld = append(ld, "--buildid=none")
if env.Commit != "" {
ld = append(ld, "-X", "github.com/ethereum/go-ethereum/internal/version.gitCommit="+env.Commit)
ld = append(ld, "-X", "github.com/ethereum/go-ethereum/internal/version.gitDate="+env.Date)