build: add static linking support

Dockerfile

@@ -14,7 +14,7 @@ COPY go.sum /go-ethereum/
 RUN cd /go-ethereum && go mod download
 
 ADD . /go-ethereum
-RUN cd /go-ethereum && go run build/ci.go install ./cmd/geth
+RUN cd /go-ethereum && go run build/ci.go install -static ./cmd/geth
 
 # Pull Geth into a second stage deploy alpine container
 FROM alpine:latest

Dockerfile.alltools

@@ -14,7 +14,7 @@ COPY go.sum /go-ethereum/
 RUN cd /go-ethereum && go mod download
 
 ADD . /go-ethereum
-RUN cd /go-ethereum && go run build/ci.go install
+RUN cd /go-ethereum && go run build/ci.go install -static
 
 # Pull all binaries into a second stage deploy alpine container
 FROM alpine:latest

build/ci.go

@@ -200,9 +200,10 @@ func main() {
 
 func doInstall(cmdline []string) {
 	var (
-		dlgo = flag.Bool("dlgo", false, "Download Go and build with it")
-		arch = flag.String("arch", "", "Architecture to cross build for")
-		cc   = flag.String("cc", "", "C compiler to cross build with")
+		dlgo       = flag.Bool("dlgo", false, "Download Go and build with it")
+		arch       = flag.String("arch", "", "Architecture to cross build for")
+		cc         = flag.String("cc", "", "C compiler to cross build with")
+		staticlink = flag.Bool("static", false, "Static link build with")
 	)
 	flag.CommandLine.Parse(cmdline)
 
@@ -215,6 +216,9 @@ func doInstall(cmdline []string) {
 
 	// Configure the build.
 	env := build.Env()
+	if *staticlink {
+		env.StaticLink = true
+	}
 	gobuild := tc.Go("build", buildFlags(env)...)
 
 	// arm64 CI builders are memory-constrained and can't handle concurrent builds,
@@ -265,7 +269,11 @@ func buildFlags(env build.Environment) (flags []string) {
 	// Enforce the stacksize to 8M, which is the case on most platforms apart from
 	// alpine Linux.
 	if runtime.GOOS == "linux" {
-		ld = append(ld, "-extldflags", "-Wl,-z,stack-size=0x800000")
+		staticlinkflag := ""
+		if env.StaticLink {
+			staticlinkflag = "-static"
+		}
+		ld = append(ld, "-extldflags", fmt.Sprintf("'-Wl,-z,stack-size=0x800000 %s'", staticlinkflag))
 	}
 	if len(ld) > 0 {
 		flags = append(flags, "-ldflags", strings.Join(ld, " "))

internal/build/env.go

@@ -34,6 +34,7 @@ var (
 	BuildnumFlag    = flag.String("buildnum", "", `Overrides CI build number`)
 	PullRequestFlag = flag.Bool("pull-request", false, `Overrides pull request status of the build`)
 	CronJobFlag     = flag.Bool("cron-job", false, `Overrides cron job status of the build`)
+	StaticLink      = flag.Bool("static-link", false, `Overrides static link status of the build`)
 )
 
 // Environment contains metadata provided by the build environment.
@@ -45,11 +46,12 @@ type Environment struct {
 	Buildnum                  string
 	IsPullRequest             bool
 	IsCronJob                 bool
+	StaticLink                bool
 }
 
 func (env Environment) String() string {
-	return fmt.Sprintf("%s env (commit:%s date:%s branch:%s tag:%s buildnum:%s pr:%t)",
-		env.Name, env.Commit, env.Date, env.Branch, env.Tag, env.Buildnum, env.IsPullRequest)
+	return fmt.Sprintf("%s env (commit:%s date:%s branch:%s tag:%s buildnum:%s pr:%t static:%t)",
+		env.Name, env.Commit, env.Date, env.Branch, env.Tag, env.Buildnum, env.IsPullRequest, env.StaticLink)
 }
 
 // Env returns metadata about the current CI environment, falling back to LocalEnv
@@ -168,5 +170,8 @@ func applyEnvFlags(env Environment) Environment {
 	if *CronJobFlag {
 		env.IsCronJob = true
 	}
+	if *StaticLink {
+		env.StaticLink = true
+	}
 	return env
 }