145 lines
3.9 KiB
Go
145 lines
3.9 KiB
Go
// Licensed to Elasticsearch B.V. under one or more contributor
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// license agreements. See the NOTICE file distributed with
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// this work for additional information regarding copyright
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// ownership. Elasticsearch B.V. licenses this file to you under
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// the Apache License, Version 2.0 (the "License"); you may
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// not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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package mage
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import (
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"fmt"
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"go/build"
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"log"
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"os"
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"path/filepath"
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"strings"
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"github.com/magefile/mage/sh"
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"github.com/pkg/errors"
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)
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// BuildArgs are the arguments used for the "build" target and they define how
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// "go build" is invoked.
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type BuildArgs struct {
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Name string // Name of binary. (On Windows '.exe' is appended.)
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OutputDir string
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CGO bool
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Static bool
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Env map[string]string
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LDFlags []string
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Vars map[string]string // Vars that are passed as -X key=value with the ldflags.
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ExtraFlags []string
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}
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// DefaultBuildArgs returns the default BuildArgs for use in builds.
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func DefaultBuildArgs() BuildArgs {
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args := BuildArgs{
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Name: BeatName,
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CGO: build.Default.CgoEnabled,
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Vars: map[string]string{
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"github.com/elastic/beats/libbeat/version.buildTime": "{{ date }}",
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"github.com/elastic/beats/libbeat/version.commit": "{{ commit }}",
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},
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}
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repo, err := GetProjectRepoInfo()
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if err != nil {
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panic(errors.Wrap(err, "failed to determine project repo info"))
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}
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if !repo.IsElasticBeats() {
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// Assume libbeat is vendored and prefix the variables.
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prefix := repo.RootImportPath + "/vendor/"
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prefixedVars := map[string]string{}
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for k, v := range args.Vars {
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prefixedVars[prefix+k] = v
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}
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args.Vars = prefixedVars
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}
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return args
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}
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// DefaultGolangCrossBuildArgs returns the default BuildArgs for use in
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// cross-builds.
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func DefaultGolangCrossBuildArgs() BuildArgs {
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args := DefaultBuildArgs()
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args.Name += "-" + Platform.GOOS + "-" + Platform.Arch
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args.OutputDir = filepath.Join("build", "golang-crossbuild")
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if bp, found := BuildPlatforms.Get(Platform.Name); found {
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args.CGO = bp.Flags.SupportsCGO()
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}
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return args
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}
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// GolangCrossBuild invokes "go build" inside of the golang-crossbuild Docker
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// environment.
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func GolangCrossBuild(params BuildArgs) error {
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if os.Getenv("GOLANG_CROSSBUILD") != "1" {
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return errors.New("Use the crossBuild target. golangCrossBuild can " +
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"only be executed within the golang-crossbuild docker environment.")
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}
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defer DockerChown(filepath.Join(params.OutputDir, params.Name+binaryExtension(GOOS)))
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return Build(params)
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}
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// Build invokes "go build" to produce a binary.
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func Build(params BuildArgs) error {
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fmt.Println(">> build: Building", params.Name)
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binaryName := params.Name + binaryExtension(GOOS)
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if params.OutputDir != "" {
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if err := os.MkdirAll(params.OutputDir, 0755); err != nil {
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return err
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}
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}
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// Environment
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env := params.Env
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if env == nil {
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env = map[string]string{}
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}
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cgoEnabled := "0"
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if params.CGO {
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cgoEnabled = "1"
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}
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env["CGO_ENABLED"] = cgoEnabled
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// Spec
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args := []string{
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"build",
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"-o",
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filepath.Join(params.OutputDir, binaryName),
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}
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args = append(args, params.ExtraFlags...)
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// ldflags
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ldflags := params.LDFlags
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if params.Static {
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ldflags = append(ldflags, `-extldflags '-static'`)
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}
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for k, v := range params.Vars {
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ldflags = append(ldflags, fmt.Sprintf("-X %v=%v", k, v))
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}
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if len(ldflags) > 0 {
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args = append(args, "-ldflags")
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args = append(args, MustExpand(strings.Join(ldflags, " ")))
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}
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log.Println("Adding build environment vars:", env)
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return sh.RunWith(env, "go", args...)
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}
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