Use a Makefile to build the project

Shameless copy of the amazing one found in https://github.com/jessfraz/amicontained
Binaries are uploaded by Travis CI when building tag.

.gitignore

@@ -60,3 +60,6 @@ crashlytics-build.properties
 fabric.properties
 
 .autoenv.zsh
+
+# Cross Platform builds
+cross/

.travis.yml

@@ -1,8 +1,33 @@
 language: go
+sudo: false
 go:
-  - tip
+  - 1.9.x
 before_install:
   - go get github.com/mattn/goveralls
+  - go get github.com/golang/lint/golint
 script:
   - $HOME/gopath/bin/goveralls -service=travis-ci
-
+  - make all release
+before_deploy:
+  - make prepare-bintray
+deploy:
+  - provider: releases
+    api_key:
+      secure: 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
+    go: 1.9.x
+    file_glob: true
+    file: cross/*
+    skip_cleanup: true
+    on:
+      repo: jcgay/protector
+      tags: true
+  - provider: bintray
+    user: jcgay
+    key:
+      secure: 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
+    go: 1.9.x
+    file: bintray/descriptor.json
+    skip_cleanup: true
+    on:
+      repo: jcgay/protector
+      tags: true

Makefile

@@ -1,29 +1,122 @@
-OS = darwin freebsd linux openbsd windows
-ARCHS = 386 arm amd64 arm64
-
-all: build release
-
-build: deps
-	go build
-
-release: clean deps
-	@for arch in $(ARCHS);\
-	do \
-		for os in $(OS);\
-		do \
-			echo "Building $$os-$$arch"; \
-			mkdir -p build/protector-$$os-$$arch/; \
-			GOOS=$$os GOARCH=$$arch go build -o build/protector-$$os-$$arch/protector; \
-			tar cz -C build -f build/protector-$$os-$$arch.tar.gz protector-$$os-$$arch; \
-		done \
-	done
-
-test: deps
-	go test ./...
-
-deps:
-	go get -d -v -t ./...
-
-clean:
-	rm -rf build
-	rm -f protector
+# Prepare a GNU sed for macOS users (brew install gnu-sed)
+sed = $(shell { command -v gsed || command -v sed; } 2>/dev/null)
+
+# Set an output prefix, which is the local directory if not specified
+PREFIX?=$(shell pwd)
+
+# Setup name variables for the package/tool
+NAME := protector
+PKG := github.com/jcgay/$(NAME)
+
+# Set any default go build tags
+BUILDTAGS :=
+
+# Set the build dir, where built cross-compiled binaries will be output
+BUILDDIR := ${PREFIX}/cross
+
+# Populate version variables
+# Add to compile time flags
+VERSION := $(shell cat version/VERSION)
+GITCOMMIT := $(shell git rev-parse --short HEAD)
+GITUNTRACKEDCHANGES := $(shell git status --porcelain --untracked-files=no)
+ifneq ($(GITUNTRACKEDCHANGES),)
+	GITCOMMIT := $(GITCOMMIT)-dirty
+endif
+CTIMEVAR=-X $(PKG)/version.GITCOMMIT=$(GITCOMMIT) -X $(PKG)/version.VERSION=$(VERSION)
+GO_LDFLAGS=-ldflags "-w $(CTIMEVAR)"
+GO_LDFLAGS_STATIC=-ldflags "-w $(CTIMEVAR) -extldflags -static"
+
+# List the GOOS and GOARCH to build
+GOOSARCHES = linux/amd64 linux/386 darwin/amd64 windows/amd64
+
+TODAY = $(shell date +"%Y-%m-%d")
+
+all: clean build fmt lint test vet install ## Runs a clean, build, fmt, lint, test, vet and install
+
+.PHONY: build
+build: $(NAME) ## Builds a dynamic executable or package
+
+$(NAME): *.go version/VERSION
+	@echo "+ $@"
+	go build -tags "$(BUILDTAGS)" ${GO_LDFLAGS} -o $(NAME) .
+
+.PHONY: static
+static: ## Builds a static executable
+	@echo "+ $@"
+	CGO_ENABLED=0 go build \
+				-tags "$(BUILDTAGS) static_build" \
+				${GO_LDFLAGS_STATIC} -o $(NAME) .
+
+.PHONY: fmt
+fmt: ## Verifies all files have men `gofmt`ed
+	@echo "+ $@"
+	@gofmt -s -l . | grep -v vendor | tee /dev/stderr
+
+.PHONY: lint
+lint: ## Verifies `golint` passes
+	@echo "+ $@"
+	@golint ./... | grep -v vendor | tee /dev/stderr
+
+.PHONY: test
+test: ## Runs the go tests
+	@echo "+ $@"
+	@go test -v -tags "$(BUILDTAGS)" $(shell go list ./... | grep -v vendor)
+
+.PHONY: vet
+vet: ## Verifies `go vet` passes
+	@echo "+ $@"
+	@go vet $(shell go list ./... | grep -v vendor) | tee /dev/stderr
+
+.PHONY: install
+install: ## Installs the executable or package
+	@echo "+ $@"
+	@go install .
+
+define buildpretty
+mkdir -p $(BUILDDIR)/$(1)/$(2);
+GOOS=$(1) GOARCH=$(2) CGO_ENABLED=0 go build \
+	 -o $(BUILDDIR)/$(1)/$(2)/$(NAME) \
+	 -a -tags "$(BUILDTAGS) static_build netgo" \
+	 -installsuffix netgo ${GO_LDFLAGS_STATIC} .;
+md5sum $(BUILDDIR)/$(1)/$(2)/$(NAME) > $(BUILDDIR)/$(1)/$(2)/$(NAME).md5;
+sha256sum $(BUILDDIR)/$(1)/$(2)/$(NAME) > $(BUILDDIR)/$(1)/$(2)/$(NAME).sha256;
+endef
+
+.PHONY: cross
+cross: *.go version/VERSION ## Builds the cross-compiled binaries, creating a clean directory structure (eg. GOOS/GOARCH/binary)
+	@echo "+ $@"
+	$(foreach GOOSARCH,$(GOOSARCHES), $(call buildpretty,$(subst /,,$(dir $(GOOSARCH))),$(notdir $(GOOSARCH))))
+
+define buildrelease
+GOOS=$(1) GOARCH=$(2) CGO_ENABLED=0 go build \
+	 -o $(BUILDDIR)/$(NAME)-$(1)-$(2) \
+	 -a -tags "$(BUILDTAGS) static_build netgo" \
+	 -installsuffix netgo ${GO_LDFLAGS_STATIC} .;
+md5sum $(BUILDDIR)/$(NAME)-$(1)-$(2) > $(BUILDDIR)/$(NAME)-$(1)-$(2).md5;
+sha256sum $(BUILDDIR)/$(NAME)-$(1)-$(2) > $(BUILDDIR)/$(NAME)-$(1)-$(2).sha256;
+endef
+
+.PHONY: release
+release: *.go version/VERSION ## Builds the cross-compiled binaries, naming them in such a way for release (eg. binary-GOOS-GOARCH)
+	@echo "+ $@"
+	$(foreach GOOSARCH,$(GOOSARCHES), $(call buildrelease,$(subst /,,$(dir $(GOOSARCH))),$(notdir $(GOOSARCH))))
+
+.PHONY: tag
+tag: ## Create a new git tag to prepare to build a release
+	git tag -sa $(VERSION) -m "$(VERSION)"
+	@echo "Run git push origin $(VERSION) to push your new tag to GitHub and trigger a travis build."
+
+.PHONY: prepare-bintray
+prepare-bintray: ## Update bintray/descriptor.json with current version
+	$(sed) -i s/%VERSION%/$(VERSION)/g bintray/descriptor.json
+	$(sed) -i s/%DATE%/$(TODAY)/g bintray/descriptor.json
+
+.PHONY: clean
+clean: ## Cleanup any build binaries or packages
+	@echo "+ $@"
+	$(RM) $(NAME)
+	$(RM) -r $(BUILDDIR)
+
+.PHONY: help
+help:
+	@grep -E '^[a-zA-Z_-]+:.*?## .*$$' $(MAKEFILE_LIST) | sort | awk 'BEGIN {FS = ":.*?## "}; {printf "\033[36m%-30s\033[0m %s\n", $$1, $$2}'

README.md

@@ -32,4 +32,18 @@ protector - v0.1.0-SNAPSHOT
 
 [![Build Status](https://travis-ci.org/jcgay/protector.svg?branch=master)](https://travis-ci.org/jcgay/protector)
 [![Code Report](https://goreportcard.com/badge/github.com/jcgay/protector)](https://goreportcard.com/report/github.com/jcgay/protector)
-[![Coverage Status](https://coveralls.io/repos/github/jcgay/protector/badge.svg?branch=master)](https://coveralls.io/github/jcgay/protector?branch=master)
+[![Coverage Status](https://coveralls.io/repos/github/jcgay/protector/badge.svg?branch=master)](https://coveralls.io/github/jcgay/protector?branch=master)
+
+### Release
+
+    make release
+
+### List available tasks
+
+    make help
+
+### macOS
+
+To run `md5sum` and `sha256sum`, I use zsh aliases:
+
+    make <task> SHELL=/bin/zsh

bintray/descriptor.json

@@ -0,0 +1,31 @@
+{
+    "package": {
+        "name": "protector",
+        "repo": "tools",
+        "subject": "jcgay",
+        "desc": "Protect GitHub branches",
+        "website_url": "https://github.com/jcgay/protector",
+        "issue_tracker_url": "https://github.com/jcgay/protector/issues",
+        "vcs_url": "https://github.com/jcgay/protector.git",
+        "github_use_tag_release_notes": true,
+        "github_release_notes_file": "CHANGELOG.md",
+        "licenses": ["MIT"],
+        "labels": ["github", "protection", "go"],
+        "public_download_numbers": false,
+        "public_stats": false
+    },
+
+    "version": {
+        "name": "%VERSION%",
+        "desc": "%VERSION%",
+        "released": "%DATE%",
+        "vcs_tag": "%VERSION%",
+        "gpgSign": false
+    },
+
+    "files":
+        [
+        {"includePattern": "cross/(.*)", "uploadPattern": "%VERSION%/$1"}
+        ],
+    "publish": true
+}

protector.go

@@ -6,15 +6,14 @@ import (
 	"fmt"
 	"github.com/google/go-github/github"
 	"golang.org/x/oauth2"
+	currentVersion "github.com/jcgay/protector/version"
 	"os"
 	"regexp"
 	"sync"
 )
 
 const (
-	banner = "protector - v%s\n"
-	// VERSION injected at compile time by goxc (see https://github.com/laher/goxc/wiki/versioning#version-number-interpolation)
-	VERSION = "0.1.0-SNAPSHOT"
+	banner = "protector - %s (%s)\n"
 )
 
 var (
@@ -58,14 +57,14 @@ func main() {
 	flag.Var(&branches, "branches", "branches to include (as regexp)")
 
 	flag.Usage = func() {
-		fmt.Fprint(os.Stderr, fmt.Sprintf(banner, VERSION))
+		fmt.Fprint(os.Stderr, fmt.Sprintf(banner, currentVersion.VERSION, currentVersion.GITCOMMIT))
 		flag.PrintDefaults()
 	}
 
 	flag.Parse()
 
 	if version {
-		fmt.Printf("v%s", VERSION)
+		fmt.Printf("%s (%s)", currentVersion.VERSION, currentVersion.GITCOMMIT)
 		os.Exit(0)
 	}
 

version/VERSION

@@ -0,0 +1 @@
+v1.0.0

version/version.go

@@ -0,0 +1,7 @@
+package version
+
+// VERSION indicates which version of the binary is running.
+var VERSION = "unknown-snapshot"
+
+// GITCOMMIT indicates which git hash the binary was built off of
+var GITCOMMIT = "unknown-commit"