new: makefile

Signed-off-by: Leonardo Di Donato <leodidonato@gmail.com>

makefile

@@ -0,0 +1,35 @@
+SHELL := /bin/bash
+
+# Make is verbose in Linux. Make it silent.
+MAKEFLAGS += --silent
+
+VERSION := $(shell git describe --tags 2> /dev/null || echo "0.0.0")
+BUILD := $(shell git rev-parse --short HEAD 2> /dev/null)
+COMMIT := $(if $(shell git status --porcelain --untracked-files=no),${BUILD}-dirty,${BUILD})
+PROJECTNAME := $(shell basename "$(PWD)")
+BASE := $(shell pwd)
+OUTPUT := $(BASE)/bin
+
+# Go variables
+GOFILES := $(wildcard *.go)
+LDFLAGS=-ldflags "-X=github.com/leodido/maintainers-generator/pkg/version.version=$(VERSION) -X=github.com/leodido/maintainers-generator/pkg/version.commit=$(COMMIT)"
+
+# Redirect error output to a file, so we can show it in development mode.
+STDERR := /tmp/.$(PROJECTNAME)-stderr.txt
+
+build: $(GOFILES)
+	@echo "  >  Building binary..."
+	@-touch $(STDERR)
+	@-rm $(STDERR)
+	@mkdir -p $(OUTPUT)
+	@go build $(LDFLAGS) -o $(OUTPUT)/$(PROJECTNAME) $(GOFILES) 2> $(STDERR)
+	@cat $(STDERR) | sed -e '1s/.*/\nError:\n/'  | sed 's/make\[.*/ /' | sed "/^/s/^/     /" 1>&2
+
+test:
+	@echo "  >  Executing tests..."
+	@env GOTRACEBACK=all go test ./...
+
+clean:
+	@echo "  >  Cleaning build cache"
+	@-rm $(OUTPUT)/$(PROJECTNAME) 2> /dev/null
+	@go clean