Fixup arm and arm64 builds; Refactor Makefile;

Makefile

@@ -8,6 +8,12 @@ TEST_FLAGS?=
 include docker/kubectl.version
 include docker/helm.version
 
+# NB default target architecture is amd64. If you would like to try the
+# other one -- pass an ARCH variable, e.g.,
+#  `make ARCH=arm64`
+ifeq ($(ARCH),)
+	ARCH=amd64
+endif
 CURRENT_OS_ARCH=$(shell echo `go env GOOS`-`go env GOARCH`)
 
 # NB because this outputs absolute file names, you have to be careful
@@ -27,11 +33,21 @@ BUILD_DATE:=$(shell date -u +'%Y-%m-%dT%H:%M:%SZ')
 all: $(GOPATH)/bin/fluxctl $(GOPATH)/bin/fluxd $(GOPATH)/bin/helm-operator build/.flux.done build/.helm-operator.done
 
 release-bins:
+	function do_build() { \
+		os=$$1 \
+		arch=$$2 \
+		CGO_ENABLED=0 GOOS=$$os GOARCH=$$arch go build -o "build/fluxctl_"$$os"_$$arch" $(LDFLAGS) -ldflags "-X main.version=$(shell ./docker/image-tag)" ./cmd/fluxctl/; \
+	};\
 	for arch in amd64; do \
 		for os in linux darwin windows; do \
-			CGO_ENABLED=0 GOOS=$$os GOARCH=$$arch go build -o "build/fluxctl_"$$os"_$$arch" $(LDFLAGS) -ldflags "-X main.version=$(shell ./docker/image-tag)" ./cmd/fluxctl/; \
+			do_build "$$os" "$$arch"; \
 		done; \
-	done
+	done; \
+	for arch in arm arm64; do \
+		for os in linux; do \
+			do_build "$$os" "$$arch"; \
+		done; \
+	done;
 
 clean:
 	go clean
@@ -58,33 +74,33 @@ build/.helm-operator.done: build/helm-operator build/kubectl build/helm docker/s
 
 build/fluxd: $(FLUXD_DEPS)
 build/fluxd: cmd/fluxd/*.go
-	CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -o $@ $(LDFLAGS) -ldflags "-X main.version=$(shell ./docker/image-tag)" ./cmd/fluxd
+	CGO_ENABLED=0 GOOS=linux GOARCH=${ARCH} go build -o $@ $(LDFLAGS) -ldflags "-X main.version=$(shell ./docker/image-tag)" ./cmd/fluxd
 
 build/helm-operator: $(HELM_OPERATOR_DEPS)
 build/helm-operator: cmd/helm-operator/*.go
-	CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -o $@ $(LDFLAGS) -ldflags "-X main.version=$(shell ./docker/image-tag)" ./cmd/helm-operator
+	CGO_ENABLED=0 GOOS=linux GOARCH=${ARCH} go build -o $@ $(LDFLAGS) -ldflags "-X main.version=$(shell ./docker/image-tag)" ./cmd/helm-operator
 
-build/kubectl: cache/linux-amd64/kubectl-$(KUBECTL_VERSION)
+build/kubectl: cache/linux-$(ARCH)/kubectl-$(KUBECTL_VERSION)
 test/bin/kubectl: cache/$(CURRENT_OS_ARCH)/kubectl-$(KUBECTL_VERSION)
-build/helm: cache/linux-amd64/helm-$(HELM_VERSION)
+build/helm: cache/linux-$(ARCH)/helm-$(HELM_VERSION)
 test/bin/helm: cache/$(CURRENT_OS_ARCH)/helm-$(HELM_VERSION)
 build/kubectl test/bin/kubectl build/helm test/bin/helm:
 	mkdir -p build
 	cp $< $@
-	if [ `basename $@` = "build" -a $(CURRENT_OS_ARCH) = "linux-amd64" ]; then strip $@; fi
+	if [ `basename $@` = "build" -a $(CURRENT_OS_ARCH) = "linux-$(ARCH)" ]; then strip $@; fi
 	chmod a+x $@
 
 cache/%/kubectl-$(KUBECTL_VERSION): docker/kubectl.version
 	mkdir -p cache/$*
 	curl -L -o cache/$*/kubectl-$(KUBECTL_VERSION).tar.gz "https://dl.k8s.io/$(KUBECTL_VERSION)/kubernetes-client-$*.tar.gz"
-	[ $* != "linux-amd64" ] || echo "$(KUBECTL_CHECKSUM)  cache/$*/kubectl-$(KUBECTL_VERSION).tar.gz" | shasum -a 256 -c
+	[ $* != "linux-$(ARCH)" ] || echo "$(KUBECTL_CHECKSUM_$(ARCH))  cache/$*/kubectl-$(KUBECTL_VERSION).tar.gz" | shasum -a 256 -c
 	tar -m --strip-components 3 -C ./cache/$* -xzf cache/$*/kubectl-$(KUBECTL_VERSION).tar.gz kubernetes/client/bin/kubectl
 	mv ./cache/$*/kubectl $@
 
 cache/%/helm-$(HELM_VERSION): docker/helm.version
 	mkdir -p cache/$*
 	curl -L -o cache/$*/helm-$(HELM_VERSION).tar.gz "https://storage.googleapis.com/kubernetes-helm/helm-v$(HELM_VERSION)-$*.tar.gz"
-	[ $* != "linux-amd64" ] || echo "$(HELM_CHECKSUM)  cache/$*/helm-$(HELM_VERSION).tar.gz" | shasum -a 256 -c
+	[ $* != "linux-$(ARCH)" ] || echo "$(HELM_CHECKSUM_$(ARCH))  cache/$*/helm-$(HELM_VERSION).tar.gz" | shasum -a 256 -c
 	tar -m -C ./cache -xzf cache/$*/helm-$(HELM_VERSION).tar.gz $*/helm
 	mv cache/$*/helm $@
 
@@ -106,3 +122,4 @@ integration-test: all
 check-generated:
 	./bin/helm/update_codegen.sh
 	git diff --exit-code -- integrations/apis intergrations/client
+

bin/upload-binaries

@@ -8,15 +8,26 @@ GITHUB_USER=${GITHUB_USER:-"${CIRCLE_PROJECT_USERNAME}"}
 GITHUB_REPO=${GITHUB_REPO:-"${CIRCLE_PROJECT_REPONAME}"}
 GITHUB_TAG=${GITHUB_TAG:-"${CIRCLE_TAG}"}
 
-for arch in amd64; do
-	for os in linux darwin windows; do
-		echo "= Uploading fluxctl_${os}_${arch} to GH release ${GITHUB_TAG}"
-		github-release upload \
-			--user ${GITHUB_USER} \
-			--repo ${GITHUB_REPO} \
-			--tag ${GITHUB_TAG} \
-			--name "fluxctl_${os}_${arch}" \
-			--file "build/fluxctl_${os}_${arch}"
-		echo "* Finished pushing fluxctl_${os}_${arch} for ${GITHUB_TAG}"
-	done
+function do_publish() {
+	os=$1
+	arch=$2
+	echo "= Uploading fluxctl_${os}_${arch} to GH release ${GITHUB_TAG}"
+	github-release upload \
+		--user ${GITHUB_USER} \
+		--repo ${GITHUB_REPO} \
+		--tag ${GITHUB_TAG} \
+		--name "fluxctl_${os}_${arch}" \
+		--file "build/fluxctl_${os}_${arch}"
+	echo "* Finished pushing fluxctl_${os}_${arch} for ${GITHUB_TAG}"
+}
+
+#amd64
+for os in linux darwin windows; do
+	do_publish $os amd64
+done
+
+#arm
+for arch in arm arm64; do
+	do_publish linux $arch
 done
+

checkpoint/checkpoint_linux_arm64.go

@@ -0,0 +1,22 @@
+package checkpoint
+
+import (
+	"syscall"
+)
+
+func getKernelVersion() string {
+	var uts syscall.Utsname
+	syscall.Uname(&uts)
+	return cstringToString(uts.Release[:])
+}
+
+func cstringToString(arr []int8) string {
+	b := make([]byte, 0, len(arr))
+	for _, v := range arr {
+		if v == 0x00 {
+			break
+		}
+		b = append(b, byte(v))
+	}
+	return string(b)
+}

docker/helm.version

@@ -3,4 +3,6 @@
 # that reliably supports authenticating against chart repos, so that
 # wins.
 HELM_VERSION=2.13.0
-HELM_CHECKSUM=15eca6ad225a8279de80c7ced42305e24bc5ac60bb7d96f2d2fa4af86e02c794
+HELM_CHECKSUM_amd64=15eca6ad225a8279de80c7ced42305e24bc5ac60bb7d96f2d2fa4af86e02c794
+HELM_CHECKSUM_arm=adf1242eca171ba21847e621ce9fbdbb3dd2aa35ac8532fb05519b1b49fd4456
+HELM_CHECKSUM_arm64=afb51c43ed83fe8bac62f7e47872019cf1c0d8a1927d69fb963959c6accc77b5

docker/kubectl.version

@@ -1,2 +1,5 @@
 KUBECTL_VERSION=v1.11.3
-KUBECTL_CHECKSUM=14a70ac05c00fcfd7d632fc9e7a5fbc6615ce1b370bb1a0e506a24972d461493
+KUBECTL_CHECKSUM_amd64=14a70ac05c00fcfd7d632fc9e7a5fbc6615ce1b370bb1a0e506a24972d461493
+KUBECTL_CHECKSUM_arm=c62835797d58b50f19706d897a9106b219f5868b0a6c7bb62c6284f809c01473
+KUBECTL_CHECKSUM_arm64=a43510f821d349519ecba27b24788a0e41eae31d79bc7af73b6132190b0dcce2
+

site/building.md

@@ -21,6 +21,13 @@ $ make
 
 This makes Docker images, and installs binaries to $GOPATH/bin.
 
+Note: The default target architecture is amd64. If you would like to try to build Docker images
+and binaries for a different architecture you will have to set ARCH variable,
+
+```sh
+$ make ARCH=<target_arch>
+```
+
 # Test
 
 ```sh