make: Add release targets for standalone binary builds

Many people might just want to download a single binary.

Makefile

@@ -31,7 +31,7 @@ SHELL = /usr/bin/env bash
 .PHONY: all art cleanart version program lang path deps run race generate build build-debug crossbuild clean test gofmt yamlfmt format docs
 .PHONY: rpmbuild mkdirs rpm srpm spec tar upload upload-sources upload-srpms upload-rpms upload-releases copr tag
 .PHONY: mkosi mkosi_fedora-30 mkosi_fedora-29 mkosi_centos-7 mkosi_debian-10 mkosi_ubuntu-bionic mkosi_archlinux
-.PHONY: release releases_path release_fedora-30 release_fedora-29 release_centos-7 release_debian-10 release_ubuntu-bionic release_archlinux
+.PHONY: release releases_path release_binary_amd64 release_binary_arm64 release_fedora-30 release_fedora-29 release_centos-7 release_debian-10 release_ubuntu-bionic release_archlinux
 .PHONY: funcgen
 .SILENT: clean
 
@@ -72,6 +72,8 @@ GOOSARCHES ?= linux/amd64 linux/ppc64 linux/ppc64le linux/arm64 darwin/amd64
 GOHOSTOS = $(shell go env GOHOSTOS)
 GOHOSTARCH = $(shell go env GOHOSTARCH)
 
+TOKEN_BINARY_AMD64 = binary-linux-amd64
+TOKEN_BINARY_ARM64 = binary-linux-arm64
 TOKEN_FEDORA-30 = fedora-30
 TOKEN_FEDORA-29 = fedora-29
 TOKEN_CENTOS-7 = centos-7
@@ -79,6 +81,8 @@ TOKEN_DEBIAN-10 = debian-10
 TOKEN_UBUNTU-BIONIC = ubuntu-bionic
 TOKEN_ARCHLINUX = archlinux
 
+FILE_BINARY_AMD64 = mgmt-linux-amd64-$(VERSION)
+FILE_BINARY_ARM64 = mgmt-linux-arm64-$(VERSION)
 FILE_FEDORA-30 = mgmt-$(TOKEN_FEDORA-30)-$(VERSION)-1.x86_64.rpm
 FILE_FEDORA-29 = mgmt-$(TOKEN_FEDORA-29)-$(VERSION)-1.x86_64.rpm
 FILE_CENTOS-7 = mgmt-$(TOKEN_CENTOS-7)-$(VERSION)-1.x86_64.rpm
@@ -86,6 +90,8 @@ FILE_DEBIAN-10 = mgmt_$(TOKEN_DEBIAN-10)_$(VERSION)_amd64.deb
 FILE_UBUNTU-BIONIC = mgmt_$(TOKEN_UBUNTU-BIONIC)_$(VERSION)_amd64.deb
 FILE_ARCHLINUX = mgmt-$(TOKEN_ARCHLINUX)-$(VERSION)-1-x86_64.pkg.tar.xz
 
+PKG_BINARY_AMD64 = releases/$(VERSION)/$(TOKEN_BINARY_AMD64)/$(FILE_BINARY_AMD64)
+PKG_BINARY_ARM64 = releases/$(VERSION)/$(TOKEN_BINARY_ARM64)/$(FILE_BINARY_ARM64)
 PKG_FEDORA-30 = releases/$(VERSION)/$(TOKEN_FEDORA-30)/$(FILE_FEDORA-30)
 PKG_FEDORA-29 = releases/$(VERSION)/$(TOKEN_FEDORA-29)/$(FILE_FEDORA-29)
 PKG_CENTOS-7 = releases/$(VERSION)/$(TOKEN_CENTOS-7)/$(FILE_CENTOS-7)
@@ -416,6 +422,8 @@ releases_path:
 	@#Don't put any other output or dependencies in here or they'll show!
 	@echo "releases/$(VERSION)/"
 
+release_binary_amd64: $(PKG_BINARY_AMD64)
+release_binary_arm64: $(PKG_BINARY_ARM64)
 release_fedora-30: $(PKG_FEDORA-30)
 release_fedora-29: $(PKG_FEDORA-29)
 release_centos-7: $(PKG_CENTOS-7)
@@ -423,12 +431,14 @@ release_debian-10: $(PKG_DEBIAN-10)
 release_ubuntu-bionic: $(PKG_UBUNTU-BIONIC)
 release_archlinux: $(PKG_ARCHLINUX)
 
-releases/$(VERSION)/mgmt-release.url: $(PKG_FEDORA-30) $(PKG_FEDORA-29) $(PKG_CENTOS-7) $(PKG_DEBIAN-10) $(PKG_UBUNTU-BIONIC) $(PKG_ARCHLINUX) $(SHA256SUMS_ASC)
+releases/$(VERSION)/mgmt-release.url: $(PKG_BINARY_AMD64) $(PKG_BINARY_ARM64) $(PKG_FEDORA-30) $(PKG_FEDORA-29) $(PKG_CENTOS-7) $(PKG_DEBIAN-10) $(PKG_UBUNTU-BIONIC) $(PKG_ARCHLINUX) $(SHA256SUMS_ASC)
 	@echo "Pushing git tag $(VERSION) to origin..."
 	git push origin $(VERSION)
 	@echo "Creating github release..."
 	hub release create \
 		-F <( echo -e "$(VERSION)\n";echo "Verify the signatures of all packages before you use them. The signing key can be downloaded from https://purpleidea.com/contact/#pgp-key to verify the release." ) \
+		-a $(PKG_BINARY_AMD64) \
+		-a $(PKG_BINARY_ARM64) \
 		-a $(PKG_FEDORA-30) \
 		-a $(PKG_FEDORA-29) \
 		-a $(PKG_CENTOS-7) \
@@ -442,7 +452,15 @@ releases/$(VERSION)/mgmt-release.url: $(PKG_FEDORA-30) $(PKG_FEDORA-29) $(PKG_CE
 		|| rm -f releases/$(VERSION)/mgmt-release.url
 
 releases/$(VERSION)/.mkdir:
-	mkdir -p releases/$(VERSION)/{$(TOKEN_FEDORA-30),$(TOKEN_FEDORA-29),$(TOKEN_CENTOS-7),$(TOKEN_DEBIAN-10),$(TOKEN_UBUNTU-BIONIC),$(TOKEN_ARCHLINUX)}/ && touch releases/$(VERSION)/.mkdir
+	mkdir -p releases/$(VERSION)/{$(TOKEN_BINARY_AMD64),$(TOKEN_BINARY_ARM64),$(TOKEN_FEDORA-30),$(TOKEN_FEDORA-29),$(TOKEN_CENTOS-7),$(TOKEN_DEBIAN-10),$(TOKEN_UBUNTU-BIONIC),$(TOKEN_ARCHLINUX)}/ && touch releases/$(VERSION)/.mkdir
+
+$(PKG_BINARY_AMD64): build/mgmt-linux-amd64 releases/$(VERSION)/.mkdir
+	@title='$(@D)' ; distro=$${title#'releases/$(VERSION)/'} ; echo "Building: $${distro} package..."
+	@title='$(@D)' ; distro=$${title#'releases/$(VERSION)/'} ; cp -a build/mgmt-linux-amd64 $(PKG_BINARY_AMD64)
+
+$(PKG_BINARY_ARM64): build/mgmt-linux-arm64 releases/$(VERSION)/.mkdir
+	@title='$(@D)' ; distro=$${title#'releases/$(VERSION)/'} ; echo "Building: $${distro} package..."
+	@title='$(@D)' ; distro=$${title#'releases/$(VERSION)/'} ; cp -a build/mgmt-linux-arm64 $(PKG_BINARY_ARM64)
 
 releases/$(VERSION)/$(TOKEN_FEDORA-30)/changelog: $(PROGRAM) releases/$(VERSION)/.mkdir
 	@title='$(@D)' ; distro=$${title#'releases/$(VERSION)/'} ; echo "Generating: $${distro} changelog..."
@@ -488,10 +506,10 @@ $(PKG_ARCHLINUX): $(PROGRAM) releases/$(VERSION)/.mkdir
 	@title='$(@D)' ; distro=$${title#'releases/$(VERSION)/'} ; echo "Building: $${distro} package..."
 	@title='$(@D)' ; distro=$${title#'releases/$(VERSION)/'} ; ./misc/fpm-pack.sh $${distro} $(VERSION) "$(FILE_ARCHLINUX)" libvirt augeas
 
-$(SHA256SUMS): $(PKG_FEDORA-30) $(PKG_FEDORA-29) $(PKG_CENTOS-7) $(PKG_DEBIAN-10) $(PKG_UBUNTU-BIONIC) $(PKG_ARCHLINUX)
+$(SHA256SUMS): $(PKG_BINARY_AMD64) $(PKG_BINARY_ARM64) $(PKG_FEDORA-30) $(PKG_FEDORA-29) $(PKG_CENTOS-7) $(PKG_DEBIAN-10) $(PKG_UBUNTU-BIONIC) $(PKG_ARCHLINUX)
 	@# remove the directory separator in the SHA256SUMS file
 	@echo "Generating: sha256 sum..."
-	sha256sum $(PKG_FEDORA-30) $(PKG_FEDORA-29) $(PKG_CENTOS-7) $(PKG_DEBIAN-10) $(PKG_UBUNTU-BIONIC) $(PKG_ARCHLINUX) | awk -F '/| ' '{print $$1"  "$$6}' > $(SHA256SUMS)
+	sha256sum $(PKG_BINARY_AMD64) $(PKG_BINARY_ARM64) $(PKG_FEDORA-30) $(PKG_FEDORA-29) $(PKG_CENTOS-7) $(PKG_DEBIAN-10) $(PKG_UBUNTU-BIONIC) $(PKG_ARCHLINUX) | awk -F '/| ' '{print $$1"  "$$6}' > $(SHA256SUMS)
 
 $(SHA256SUMS_ASC): $(SHA256SUMS)
 	@echo "Signing sha256 sum..."