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build.go
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/
build.go
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// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
//go:generate go run gendex/gendex.go -o dex.go
package mobile
import (
"bufio"
"flag"
"fmt"
"io"
"os"
"regexp"
"runtime"
"strings"
"github.com/Anwert/fyne/v2/cmd/fyne/internal/util"
"golang.org/x/sys/execabs"
"golang.org/x/tools/go/packages"
)
var tmpdir string
var cmdBuild = &command{
run: runBuild,
Name: "build",
Usage: "[-os android|ios] [-o output] [-bundleid bundleID] [build flags] [package]",
Short: "compile android APK and iOS app",
Long: `
Build compiles and encodes the app named by the import path.
The named package must define a main function.
The -os Flag takes a target system name, either android (the
default) or ios.
For -os=android, if an AndroidManifest.xml is defined in the
package directory, it is added to the APK output. Otherwise, a default
manifest is generated. By default, this builds a fat APK for all supported
instruction sets (arm, 386, amd64, arm64). A subset of instruction sets can
be selected by specifying target type with the architecture name. E.g.
-os=android/arm,android/386.
For -os ios, gomobile must be run on an OS X machine with Xcode
installed.
If the package directory contains an assets subdirectory, its contents
are copied into the output.
Flag -iosversion sets the minimal version of the iOS SDK to compile against.
The default version is 7.0.
Flag -androidapi sets the Android API version to compile against.
The default and minimum is 15.
The -bundleid Flag is required for -os=ios and sets the bundle ID to use
with the app.
The -o Flag specifies the output file name. If not specified, the
output file name depends on the package built.
The -v Flag provides verbose output, including the list of packages built.
The build flags -a, -i, -n, -x, -gcflags, -ldflags, -tags, -trimpath, and -work are
shared with the build command. For documentation, see 'go help build'.
`,
}
const (
minAndroidAPI = 15
)
func runBuild(cmd *command) (err error) {
_, err = runBuildImpl(cmd)
return
}
// AppOutputName provides the name of a build resource for a given os - "ios" or "android".
func AppOutputName(os, name string, release bool) string {
switch os {
case "android/arm", "android/arm64", "android/amd64", "android/386", "android":
if release {
return androidPkgName(name) + ".aab"
} else {
return androidPkgName(name) + ".apk"
}
case "ios", "iossimulator":
return rfc1034Label(name) + ".app"
}
return ""
}
// runBuildImpl builds a package for mobiles based on the given commands.
// runBuildImpl returns a built package information and an error if exists.
func runBuildImpl(cmd *command) (*packages.Package, error) {
cleanup, err := buildEnvInit()
if err != nil {
return nil, err
}
defer cleanup()
args := cmd.Flag.Args()
targetOS, targetArchs, err := parseBuildTarget(buildTarget)
if err != nil {
return nil, fmt.Errorf(`invalid -os=%q: %v`, buildTarget, err)
}
var buildPath string
switch len(args) {
case 0:
buildPath = "."
case 1:
buildPath = args[0]
default:
cmd.usage()
os.Exit(1)
}
pkgs, err := packages.Load(packagesConfig(targetOS, targetArchs[0]), buildPath)
if err != nil {
return nil, err
}
// len(pkgs) can be more than 1 e.g., when the specified path includes `...`.
if len(pkgs) != 1 {
cmd.usage()
os.Exit(1)
}
pkg := pkgs[0]
if pkg.Name != "main" && buildO != "" {
return nil, fmt.Errorf("cannot set -o when building non-main package")
}
if buildBundleID == "" {
return nil, fmt.Errorf("value for -appID is required for a mobile package")
}
var nmpkgs map[string]bool
switch targetOS {
case "android":
if pkg.Name != "main" {
for _, arch := range targetArchs {
if err := goBuild(pkg.PkgPath, androidEnv[arch]); err != nil {
return nil, err
}
}
return pkg, nil
}
target := 33
if !buildRelease {
target = 29 // TODO once we have gomobile debug signing working for v2 android signs
}
nmpkgs, err = goAndroidBuild(pkg, buildBundleID, targetArchs, cmd.IconPath, cmd.AppName, cmd.Version, cmd.Build, target, buildRelease)
if err != nil {
return nil, err
}
case "darwin":
if !xcodeAvailable() {
return nil, fmt.Errorf("-os=ios requires XCode")
}
if buildRelease {
if len(allArchs["ios"]) > 2 {
targetArchs = []string{"arm", "arm64"}
} else {
targetArchs = []string{"arm64"}
}
}
if pkg.Name != "main" {
for _, arch := range targetArchs {
if err := goBuild(pkg.PkgPath, darwinEnv[arch]); err != nil {
return nil, err
}
}
return pkg, nil
}
nmpkgs, err = goIOSBuild(pkg, buildBundleID, targetArchs, cmd.AppName, cmd.Version, cmd.Build, buildRelease, cmd.Cert, cmd.Profile)
if err != nil {
return nil, err
}
}
if !nmpkgs["github.com/Anwert/fyne/v2/internal/driver/mobile/app"] {
return nil, fmt.Errorf(`%s does not import "github.com/Anwert/fyne/v2/internal/driver/mobile/app"`, pkg.PkgPath)
}
return pkg, nil
}
var nmRE = regexp.MustCompile(`[0-9a-f]{8} t _?(?:.*/vendor/)?(fyne.io/fyne/v2/internal/driver/mobile.*/[^.]*)`)
func extractPkgs(nm string, path string) (map[string]bool, error) {
if buildN {
return map[string]bool{"github.com/Anwert/fyne/v2/internal/driver/mobile/app": true}, nil
}
r, w := io.Pipe()
cmd := execabs.Command(nm, path)
cmd.Stdout = w
cmd.Stderr = os.Stderr
nmpkgs := make(map[string]bool)
errc := make(chan error, 1)
go func() {
s := bufio.NewScanner(r)
for s.Scan() {
if res := nmRE.FindStringSubmatch(s.Text()); res != nil {
nmpkgs[res[1]] = true
}
}
errc <- s.Err()
}()
err := cmd.Run()
if err != nil {
return nil, fmt.Errorf("%s %s: %v", nm, path, err)
}
err = w.Close()
if err != nil {
return nil, fmt.Errorf("%s %s: %v", nm, path, err)
}
if err := <-errc; err != nil {
return nil, fmt.Errorf("%s %s: %v", nm, path, err)
}
return nmpkgs, nil
}
var xout io.Writer = os.Stderr
func printcmd(format string, args ...interface{}) {
cmd := fmt.Sprintf(format+"\n", args...)
if tmpdir != "" {
cmd = strings.Replace(cmd, tmpdir, "$WORK", -1)
}
if androidHome := os.Getenv("ANDROID_HOME"); androidHome != "" {
cmd = strings.Replace(cmd, androidHome, "$ANDROID_HOME", -1)
}
if gomobilepath != "" {
cmd = strings.Replace(cmd, gomobilepath, "$GOMOBILE", -1)
}
if gopath := goEnv("GOPATH"); gopath != "" {
cmd = strings.Replace(cmd, gopath, "$GOPATH", -1)
}
if env := os.Getenv("HOMEPATH"); env != "" {
cmd = strings.Replace(cmd, env, "$HOMEPATH", -1)
}
fmt.Fprint(xout, cmd)
}
// "Build flags", used by multiple commands.
var (
buildA bool // -a
buildI bool // -i
buildN bool // -n
buildV bool // -v
buildX bool // -x
buildO string // -o
buildGcflags string // -gcflags
buildLdflags string // -ldflags
buildRelease bool // -release
buildTarget string // -os
buildTrimpath bool // -trimpath
buildWork bool // -work
buildBundleID string // -bundleid
buildIOSVersion string // -iosversion
buildAndroidAPI int // -androidapi
buildTags stringsFlag // -tags
)
// RunNewBuild executes a new mobile build for the specified configuration
func RunNewBuild(target, appID, icon, name, version string, build int, release, distribution bool, cert, profile string, tags []string) error {
buildTarget = target
buildBundleID = appID
buildRelease = distribution
buildTags = tags
if release {
buildLdflags = "-w"
buildTrimpath = true
}
cmd := cmdBuild
cmd.Flag = flag.FlagSet{}
cmd.IconPath = icon
cmd.AppName = name
cmd.Version = version
cmd.Build = build
cmd.Cert = cert
cmd.Profile = profile
return runBuild(cmd)
}
func addBuildFlags(cmd *command) {
cmd.Flag.StringVar(&buildO, "o", "", "")
cmd.Flag.StringVar(&buildGcflags, "gcflags", "", "")
cmd.Flag.StringVar(&buildLdflags, "ldflags", "", "")
cmd.Flag.StringVar(&buildTarget, "os", "android", "")
cmd.Flag.StringVar(&buildBundleID, "bundleid", "", "")
cmd.Flag.StringVar(&buildIOSVersion, "iosversion", "7.0", "")
cmd.Flag.IntVar(&buildAndroidAPI, "androidapi", minAndroidAPI, "")
cmd.Flag.BoolVar(&buildA, "a", false, "")
cmd.Flag.BoolVar(&buildI, "i", false, "")
cmd.Flag.BoolVar(&buildTrimpath, "trimpath", false, "")
cmd.Flag.Var(&buildTags, "tags", "")
}
func addBuildFlagsNVXWork(cmd *command) {
cmd.Flag.BoolVar(&buildN, "n", false, "")
cmd.Flag.BoolVar(&buildV, "v", false, "")
cmd.Flag.BoolVar(&buildX, "x", false, "")
cmd.Flag.BoolVar(&buildWork, "work", false, "")
}
func init() {
addBuildFlags(cmdBuild)
addBuildFlagsNVXWork(cmdBuild)
addBuildFlagsNVXWork(cmdClean)
}
func goBuild(src string, env []string, args ...string) error {
return goCmd("build", []string{src}, env, args...)
}
func goCmd(subcmd string, srcs []string, env []string, args ...string) error {
return goCmdAt("", subcmd, srcs, env, args...)
}
func goCmdAt(at string, subcmd string, srcs []string, env []string, args ...string) error {
cmd := execabs.Command("go", subcmd)
tags := buildTags
targetOS, _, err := parseBuildTarget(buildTarget)
if err != nil {
return err
}
if targetOS == "darwin" {
tags = append(tags, "ios")
}
if buildRelease {
tags = append(tags, "release")
}
if len(tags) > 0 {
cmd.Args = append(cmd.Args, "-tags", strings.Join(tags, " "))
}
if buildV {
cmd.Args = append(cmd.Args, "-v")
}
if subcmd != "install" && buildI {
cmd.Args = append(cmd.Args, "-i")
}
if buildX {
cmd.Args = append(cmd.Args, "-x")
}
if buildGcflags != "" {
cmd.Args = append(cmd.Args, "-gcflags", buildGcflags)
}
if buildLdflags != "" {
cmd.Args = append(cmd.Args, "-ldflags", buildLdflags)
}
if buildTrimpath {
cmd.Args = append(cmd.Args, "-trimpath")
}
if buildWork {
cmd.Args = append(cmd.Args, "-work")
}
cmd.Args = append(cmd.Args, args...)
cmd.Args = append(cmd.Args, srcs...)
cmd.Env = append([]string{}, env...)
cmd.Dir = at
return runCmd(cmd)
}
func parseBuildTarget(buildTarget string) (os string, archs []string, _ error) {
if buildTarget == "" {
return "", nil, fmt.Errorf(`invalid target ""`)
}
all := false
archNames := []string{}
for i, p := range strings.Split(buildTarget, ",") {
osarch := strings.SplitN(p, "/", 2) // len(osarch) > 0
if !util.IsAndroid(osarch[0]) && !util.IsIOS(osarch[0]) {
return "", nil, fmt.Errorf(`unsupported os`)
}
if osarch[0] == "iossimulator" {
osarch[0] = "ios"
}
if i == 0 {
os = osarch[0]
}
if os != osarch[0] {
return "", nil, fmt.Errorf(`cannot target different OSes`)
}
if len(osarch) == 1 {
all = true
} else {
archNames = append(archNames, osarch[1])
}
}
// verify all archs are supported one while deduping.
isSupported := func(os, arch string) bool {
for _, a := range allArchs[os] {
if a == arch {
return true
}
}
return false
}
seen := map[string]bool{}
for _, arch := range archNames {
if _, ok := seen[arch]; ok {
continue
}
if !isSupported(os, arch) {
return "", nil, fmt.Errorf(`unsupported arch: %q`, arch)
}
seen[arch] = true
archs = append(archs, arch)
}
targetOS := os
if os == "ios" {
targetOS = "darwin"
}
if buildTarget == "iossimulator" {
if before116 {
// If the build target is iossimulator, and the go distribution also before
// 1.16, then we can only build amd64 arch app for simulators. Because
// arm64 simulators is only supported after go 1.16.
allArchs[os] = []string{"amd64"}
} else {
// Otherwise, the iossimulator arch is depending on the host arch.
allArchs[os] = []string{runtime.GOARCH}
}
}
if all {
return targetOS, allArchs[os], nil
}
return targetOS, archs, nil
}