Issue #18 #21 #32: Adding the initial Makefile, go module files

Makefile

@@ -0,0 +1,60 @@
+# Copyright (C) 2019 Red Hat, Inc.
+#
+# 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.
+
+CRC_VERSION = 0.0.1-alpha.1
+COMMIT_SHA=$(shell git rev-parse --short HEAD)
+
+# Go and compilation related variables
+BUILD_DIR ?= out
+
+GOOS ?= $(shell go env GOOS)
+GOARCH ?= $(shell go env GOARCH)
+ORG := github.com/code-ready
+REPOPATH ?= $(ORG)/crc
+ifeq ($(GOOS),windows)
+	IS_EXE := .exe
+endif
+
+
+# Linker flags
+VERSION_VARIABLES := -X $(REPOPATH)/pkg/crc.crcVersion=$(CRC_VERSION) \
+	-X $(REPOPATH)/pkg/crc.commitSha=$(COMMIT_SHA)
+
+LDFLAGS := $(VERSION_VARIABLES)
+
+# Start of the actual build targets
+
+.PHONY: $(CURDIR)/bin/crc$(IS_EXE)
+$(CURDIR)/bin/crc$(IS_EXE):
+	go install -ldflags="$(VERSION_VARIABLES)" ./cmd/crc
+
+$(BUILD_DIR)/$(GOOS)-$(GOARCH):
+	mkdir -p $(BUILD_DIR)/$(GOOS)-$(GOARCH)
+
+$(BUILD_DIR)/darwin-amd64/crc: $(BUILD_DIR)/$(GOOS)-$(GOARCH)
+	GOARCH=amd64 GOOS=darwin go build -ldflags="$(LDFLAGS)" -o $(BUILD_DIR)/darwin-amd64/crc ./cmd/crc
+
+$(BUILD_DIR)/linux-amd64/crc:  $(BUILD_DIR)/$(GOOS)-$(GOARCH)
+	GOOS=linux GOARCH=amd64 go build -ldflags="$(LDFLAGS)" -o $(BUILD_DIR)/linux-amd64/crc ./cmd/crc
+
+$(BUILD_DIR)/windows-amd64/crc.exe:  $(BUILD_DIR)/$(GOOS)-$(GOARCH)
+	GOARCH=amd64 GOOS=windows go build -ldflags="$(LDFLAGS)" -o $(BUILD_DIR)/windows-amd64/crc.exe ./cmd/crc
+
+.PHONY: cross ## Cross compiles all binaries
+cross: $(BUILD_DIR)/darwin-amd64/crc $(BUILD_DIR)/linux-amd64/crc $(BUILD_DIR)/windows-amd64/crc.exe
+
+.PHONY: clean ## Remove all build artifacts
+clean:
+	rm -rf $(BUILD_DIR)
+

cmd/crc/cmd/version.go

@@ -0,0 +1,25 @@
+package cmd
+
+import (
+	"fmt"
+
+	crcPkg "github.com/code-ready/crc/pkg/crc"
+	"github.com/spf13/cobra"
+)
+
+func init() {
+	rootCmd.AddCommand(versionCmd)
+}
+
+var versionCmd = &cobra.Command{
+	Use:   "version",
+	Short: "Get CodeReady Container version.",
+	Long:  "Get the CodeReady Container version currently installed.",
+	Run: func(cmd *cobra.Command, args []string) {
+		runPrintVersion(args)
+	},
+}
+
+func runPrintVersion(arguments []string) {
+	fmt.Printf("version: %s+%s\n", crcPkg.GetCRCVersion(), crcPkg.GetCommitSha())
+}

go.mod

@@ -0,0 +1,7 @@
+module github.com/code-ready/crc
+
+require (
+	github.com/inconshreveable/mousetrap v1.0.0 // indirect
+	github.com/spf13/cobra v0.0.3
+	github.com/spf13/pflag v1.0.3 // indirect
+)

go.sum

@@ -0,0 +1,6 @@
+github.com/inconshreveable/mousetrap v1.0.0 h1:Z8tu5sraLXCXIcARxBp/8cbvlwVa7Z1NHg9XEKhtSvM=
+github.com/inconshreveable/mousetrap v1.0.0/go.mod h1:PxqpIevigyE2G7u3NXJIT2ANytuPF1OarO4DADm73n8=
+github.com/spf13/cobra v0.0.3 h1:ZlrZ4XsMRm04Fr5pSFxBgfND2EBVa1nLpiy1stUsX/8=
+github.com/spf13/cobra v0.0.3/go.mod h1:1l0Ry5zgKvJasoi3XT1TypsSe7PqH0Sj9dhYf7v3XqQ=
+github.com/spf13/pflag v1.0.3 h1:zPAT6CGy6wXeQ7NtTnaTerfKOsV6V6F8agHXFiazDkg=
+github.com/spf13/pflag v1.0.3/go.mod h1:DYY7MBk1bdzusC3SYhjObp+wFpr4gzcvqqNjLnInEg4=

pkg/crc/version.go

@@ -0,0 +1,34 @@
+/*
+Copyright (C) 2019 Red Hat, Inc.
+
+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.
+*/
+
+package crc
+
+// The following variables are private fields and should be set when compiling with ldflags, for example --ldflags="-X github.com/code-ready/crc/pkg/version.crcVersion=vX.Y.Z
+var (
+	// The current version of minishift
+	crcVersion = "0.0.0-unset"
+
+	// The SHA-1 of the commit this binary is build off
+	commitSha = "sha-unset"
+)
+
+func GetCRCVersion() string {
+	return crcVersion
+}
+
+func GetCommitSha() string {
+	return commitSha
+}