update build routines based on and inspired by ketall code

.gitignore

@@ -11,4 +11,6 @@
 # Output of the go coverage tool, specifically when used with LiteIDE
 *.out
 
+out/
 bin/
+pod-dive

Makefile

@@ -1,34 +1,138 @@
+# Copyright 2019 Cornelius Weig (from ketall)
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
 
-export GO111MODULE=on
-export GOROOT=$(PWD)
+export GO111MODULE ?= on
+export GOARCH      ?= amd64
+export CGO_ENABLED ?= 0
 
-.PHONY: bin
-bin: fmt vet
-	go build -o bin/pod-dive github.com/caiobegotti/pod-dive/cmd/plugin
+PROJECT   ?= pod-dive
+REPOPATH  ?= github.com/caiobegotti/$(PROJECT)
+COMMIT    := $(shell git rev-parse HEAD)
+VERSION   ?= $(shell git describe --always --tags --dirty="-WIP")
+GOOS      ?= $(shell go env GOOS)
+GOPATH    ?= $(shell go env GOPATH)
+
+BUILDDIR  := out
+PLATFORMS ?= darwin/amd64 windows/amd64 linux/amd64
+DISTFILE  := $(BUILDDIR)/$(VERSION).tar.gz
+ASSETS     := $(BUILDDIR)/pod-dive-$(GOARCH)-darwin.tar.gz $(BUILDDIR)/pod-dive-$(GOARCH)-linux.tar.gz $(BUILDDIR)/pod-dive-$(GOARCH)-windows.zip
+CHECKSUMS  := $(patsubst %,%.sha256,$(ASSETS))
+
+VERSION_PACKAGE := $(REPOPATH)/pkg/pod-dive/version
+
+DATE_FMT = %Y-%m-%dT%H:%M:%SZ
+ifdef SOURCE_DATE_EPOCH
+    # GNU and BSD date require different options for a fixed date
+    BUILD_DATE ?= $(shell date -u -d "@$(SOURCE_DATE_EPOCH)" "+$(DATE_FMT)" 2>/dev/null || date -u -r "$(SOURCE_DATE_EPOCH)" "+$(DATE_FMT)" 2>/dev/null)
+else
+    BUILD_DATE ?= $(shell date "+$(DATE_FMT)")
+endif
+GO_LDFLAGS :="-s -w
+GO_LDFLAGS += -X $(VERSION_PACKAGE).version=$(VERSION)
+GO_LDFLAGS += -X $(VERSION_PACKAGE).buildDate=$(BUILD_DATE)
+GO_LDFLAGS += -X $(VERSION_PACKAGE).gitCommit=$(COMMIT)
+GO_LDFLAGS +="
+
+ifdef ZOPFLI
+  COMPRESS:=zopfli -c
+else
+  COMPRESS:=gzip --best -k -c
+endif
+
+GO_FILES  := $(shell find . -type f -name '*.go')
+
+.PHONY: all
+all: clean lint test dev
 
 .PHONY: test
 test:
-	go test ./pkg/... ./cmd/... -coverprofile cover.out
+	go test ./...
 
-.PHONY: fmt
-fmt:
-	go fmt ./pkg/... ./cmd/...
+.PHONY: help
+help:
+	@echo 'Valid make targets:'
+	@echo '  - all:      build binaries for all supported platforms'
+	@echo '  - clean:    clean up build directory'
+	@echo '  - coverage: run unit tests with coverage'
+	@echo '  - deploy:   build artifacts for a new deployment'
+	@echo '  - dev:      build the binary for the current platform'
+	@echo '  - dist:     create a tar archive of the source code'
+	@echo '  - help:     print this help'
+	@echo '  - lint:     run fmt and vet'
+	@echo '  - test:     run unit tests'
+	@echo '  - build:    build binaries for all supported platforms'
+
+.PHONY: coverage
+coverage: $(BUILDDIR)
+	go test -coverprofile=$(BUILDDIR)/coverage.txt -covermode=atomic ./...
+
+.PHONY: dev
+dev: CGO_ENABLED := 1
+dev: GO_LDFLAGS := $(subst -s -w,,$(GO_LDFLAGS))
+
+# go get k8s.io/client-go@v11.0.0
+# go get k8s.io/api@kubernetes-1.14.0
+# go get k8s.io/apimachinery@kubernetes-1.14.0
+# go get k8s.io/cli-runtime@kubernetes-1.14.0
+dev:
+	go build -race -ldflags $(GO_LDFLAGS) -o pod-dive $(REPOPATH)/cmd/plugin
 
-.PHONY: vet
-vet:
+build: $(GO_FILES) $(BUILDDIR)
+	gox -osarch="$(PLATFORMS)" -ldflags $(GO_LDFLAGS) -output="out/pod-dive-{{.Arch}}-{{.OS}}" $(REPOPATH)/cmd/plugin
+
+.PHONY: lint
+lint:
+	go fmt ./pkg/... ./cmd/...
 	go vet ./pkg/... ./cmd/...
 
-.PHONY: kubernetes-deps
-kubernetes-deps:
-	go get k8s.io/client-go@v11.0.0
-	go get k8s.io/api@kubernetes-1.14.0
-	go get k8s.io/apimachinery@kubernetes-1.14.0
-	go get k8s.io/cli-runtime@kubernetes-1.14.0
+.PRECIOUS: %.zip
+%.zip: %.exe
+	cp LICENSE $(BUILDDIR) && \
+	cd $(BUILDDIR) && \
+	zip $(patsubst $(BUILDDIR)/%, %, $@) LICENSE $(patsubst $(BUILDDIR)/%, %, $<)
+
+.PRECIOUS: %.gz
+%.gz: %
+	$(COMPRESS) "$<" > "$@"
+
+%.tar: %
+	cp LICENSE $(BUILDDIR)
+	tar cf "$@" -C $(BUILDDIR) LICENSE $(patsubst $(BUILDDIR)/%,%,$^)
+
+$(BUILDDIR):
+	mkdir -p "$@"
+
+%.sha256: %
+	shasum -a 256 $< > $@
+
+.INTERMEDIATE: $(DISTFILE:.gz=)
+$(DISTFILE:.gz=): $(BUILDDIR)
+	git archive --prefix="pod-dive-$(VERSION)/" --format=tar HEAD > "$@"
+
+.PHONY: deploy
+deploy: $(CHECKSUMS)
+	$(RM) $(BUILDDIR)/LICENSE
+
+.PHONY: dist
+dist: $(DISTFILE)
 
-.PHONY: setup
-setup:
-	make -C setup
+.PHONY: clean
+clean:
+	$(RM) -r $(BUILDDIR) pod-dive
 
-# https://github.com/guessi/kubectl-grep/blo
+$(BUILDDIR)/pod-dive-amd64-linux: build
+$(BUILDDIR)/pod-dive-amd64-darwin: build
+$(BUILDDIR)/pod-dive-amd64-windows.exe: build
 
-# https://github.com/corneliusweig/ketall/blob/master/Makefile
+# https://github.com/guessi/kubectl-grep/blo

go.sum

@@ -466,6 +466,7 @@ github.com/imdario/mergo v0.3.6/go.mod h1:2EnlNZ0deacrJVfApfmtdGgDfMuh/nq6Ok1EcJ
 github.com/imdario/mergo v0.3.7 h1:Y+UAYTZ7gDEuOfhxKWy+dvb5dRQ6rJjFSdX2HZY1/gI=
 github.com/imdario/mergo v0.3.7/go.mod h1:2EnlNZ0deacrJVfApfmtdGgDfMuh/nq6Ok1EcJh5FfA=
 github.com/inconshreveable/go-update v0.0.0-20160112193335-8152e7eb6ccf/go.mod h1:hyb9oH7vZsitZCiBt0ZvifOrB+qc8PS5IiilCIb87rg=
+github.com/inconshreveable/mousetrap v1.0.0 h1:Z8tu5sraLXCXIcARxBp/8cbvlwVa7Z1NHg9XEKhtSvM=
 github.com/inconshreveable/mousetrap v1.0.0/go.mod h1:PxqpIevigyE2G7u3NXJIT2ANytuPF1OarO4DADm73n8=
 github.com/jcmturner/gofork v0.0.0-20180107083740-2aebee971930/go.mod h1:MK8+TM0La+2rjBD4jE12Kj1pCCxK7d2LK/UM3ncEo0o=
 github.com/jcmturner/gofork v0.0.0-20190328161633-dc7c13fece03/go.mod h1:MK8+TM0La+2rjBD4jE12Kj1pCCxK7d2LK/UM3ncEo0o=