ebiten/cmd/ebitenmobile/gomobile.go

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// Copyright 2019 The Ebiten Authors
//
// 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 main
import (
"fmt"
"io/ioutil"
"os"
"os/exec"
"path/filepath"
)
const gomobileHash = "2b26a4705d2481ef30846d291bd450445e2b5bdd"
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func runCommand(command string, args []string, env []string) error {
if buildX || buildN {
for _, e := range env {
fmt.Printf("%s ", e)
}
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fmt.Print(command)
for _, arg := range args {
fmt.Printf(" %s", arg)
}
fmt.Println()
}
if buildN {
return nil
}
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cmd := exec.Command(command, args...)
if len(env) > 0 {
cmd.Env = append(os.Environ(), env...)
}
if out, err := cmd.CombinedOutput(); err != nil {
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return fmt.Errorf("%s %v failed: %v\n%v", command, args, string(out), err)
}
return nil
}
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func runGo(args ...string) error {
env := []string{
"GO111MODULE=on",
}
return runCommand("go", args, env)
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}
func prepareGomobileCommands() error {
tmp, err := ioutil.TempDir("", "ebitenmobile-")
if err != nil {
return err
}
newpath := filepath.Join(tmp, "bin")
if path := os.Getenv("PATH"); path != "" {
newpath += string(filepath.ListSeparator) + path
}
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if buildX || buildN {
fmt.Printf("PATH=%s\n", newpath)
}
if !buildN {
os.Setenv("PATH", newpath)
}
pwd, err := os.Getwd()
if err != nil {
return err
}
// cd
if buildX {
fmt.Printf("cd %s\n", tmp)
}
if err := os.Chdir(tmp); err != nil {
return err
}
defer func() {
os.Chdir(pwd)
}()
if err := runGo("mod", "init", "ebitenmobiletemporary"); err != nil {
return err
}
if err := runGo("get", "golang.org/x/mobile@"+gomobileHash); err != nil {
return err
}
if err := runGo("build", "-o", filepath.Join("bin", "gomobile"), "golang.org/x/mobile/cmd/gomobile"); err != nil {
return err
}
if err := runGo("build", "-o", filepath.Join("bin", "gobind-original"), "golang.org/x/mobile/cmd/gobind"); err != nil {
return err
}
if err := os.Mkdir("src", 0755); err != nil {
return err
}
if err := ioutil.WriteFile(filepath.Join("src", "gobind.go"), gobindsrc, 0644); err != nil {
return err
}
if err := runGo("build", "-o", filepath.Join("bin", "gobind"), "-tags", "ebitenmobilegobind", filepath.Join("src", "gobind.go")); err != nil {
return err
}
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if err := runCommand("gomobile", []string{"init"}, nil); err != nil {
return err
}
return nil
}