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crawshawcrawshaw
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androidtest.bash, misc/android: build scripts for android
LGTM=minux R=minux CC=golang-codereviews https://golang.org/cl/107640044
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‎misc/android/README‎

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Android
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=======
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For details on developing Go for Android, see the documentation in the
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go.mobile subrepository:
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https://code.google.com/p/go/source/browse/README?repo=mobile
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To run the standard library tests, see androidtest.bash. Run it as
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CC_FOR_TARGET=.../ndk-gcc GOARCH=arm GOARM=7 ./androidtest.bash

‎misc/android/go_android_exec.go‎

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// Copyright 2014 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// This program can be used as go_android_GOARCH_exec by the Go tool.
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// It executes binaries on an android device using adb.
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package main
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import (
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"bytes"
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"fmt"
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"io"
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"log"
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"os"
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"os/exec"
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"path/filepath"
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"runtime"
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"strconv"
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"strings"
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)
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func run(args ...string) string {
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buf := new(bytes.Buffer)
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cmd := exec.Command("adb", args...)
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cmd.Stdout = io.MultiWriter(os.Stdout, buf)
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cmd.Stderr = os.Stderr
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log.Printf("adb %s", strings.Join(args, " "))
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err := cmd.Run()
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if err != nil {
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log.Fatalf("adb %s: %v", strings.Join(args, " "), err)
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}
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return buf.String()
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}
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func main() {
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log.SetFlags(0)
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log.SetPrefix("go_android_exec: ")
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// Determine thepackage by examining the current working
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// directory, which will look something like
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// "$GOROOT/src/pkg/mime/multipart". We extract everything
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// after the $GOROOT to run on the same relative directory
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// on the target device.
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//
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// TODO(crawshaw): Pick useful subdir when we are not
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// inside a GOROOT, e.g. we are in a GOPATH.
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cwd, err := os.Getwd()
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if err != nil {
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log.Fatal(err)
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}
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subdir, err := filepath.Rel(runtime.GOROOT(), cwd)
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if err != nil {
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log.Fatal(err)
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}
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subdir = filepath.ToSlash(subdir)
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// Binary names can conflict.
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// E.g. template.test from the {html,text}/template packages.
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binName := filepath.Base(os.Args[1])
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deviceGoroot := "/data/local/tmp/goroot"
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deviceBin := fmt.Sprintf("%s/%s-%d", deviceGoroot, binName, os.Getpid())
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// The push of the binary happens in parallel with other tests.
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// Unfortunately, a simultaneous call to adb shell hold open
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// file descriptors, so it is necessary to push then move to
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// avoid a "text file busy" error on execution.
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// https://code.google.com/p/android/issues/detail?id=65857
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run("push", os.Args[1], deviceBin+"-tmp")
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run("shell", "cp '"+deviceBin+"-tmp' '"+deviceBin+"'")
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run("shell", "rm '"+deviceBin+"-tmp'")
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// The adb shell command will return an exit code of 0 regardless
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// of the command run. E.g.
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// $ adb shell false
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// $ echo $?
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// 0
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// https://code.google.com/p/android/issues/detail?id=3254
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// So we append the exitcode to the output and parse it from there.
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const exitstr = "exitcode="
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cmd := `export TMPDIR="/data/local/tmp"` +
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`; export GOROOT="` + deviceGoroot + `"` +
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`; cd "$GOROOT/` + subdir + `"` +
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"; '" + deviceBin + "' " + strings.Join(os.Args[2:], " ") +
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"; echo -n " + exitstr + "$?"
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output := run("shell", cmd)
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run("shell", "rm '"+deviceBin+"'") // cleanup
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output = output[strings.LastIndex(output, "\n")+1:]
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if !strings.HasPrefix(output, exitstr) {
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log.Fatalf("no exit code: %q", output)
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}
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code, err := strconv.Atoi(output[len(exitstr):])
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if err != nil {
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log.Fatalf("bad exit code: %v", err)
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}
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os.Exit(code)
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}

‎src/androidtest.bash‎

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#/usr/bin/env bash
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# Copyright 2014 The Go Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style
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# license that can be found in the LICENSE file.
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# For testing Android.
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# The compiler runs locally, then a copy of the GOROOT is pushed to a
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# target device using adb, and the tests are run there.
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set -e
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ulimit -c 0 # no core files
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if [ ! -f make.bash ]; then
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echo 'nacl.bash must be run from $GOROOT/src' 1>&2
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exit 1
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fi
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if [ -z $GOOS ]; then
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export GOOS=android
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fi
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if [ "$GOOS" != "android" ]; then
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echo "androidtest.bash requires GOOS=android, got GOOS=$GOOS" 1>&2
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exit 1
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fi
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export CGO_ENABLED=1
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# Run the build for the host bootstrap, so we can build go_android_exec.
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# Also lets us fail early before the (slow) adb push if the build is broken.
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./make.bash
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export GOROOT=$(dirname $(pwd))
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export PATH=$GOROOT/bin:$PATH
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GOOS=$GOHOSTOS GOARCH=$GOHOSTARCH go build \
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-o ../bin/go_android_${GOARCH}_exec \
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../misc/android/go_android_exec.go
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# Push GOROOT to target device.
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#
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# The adb sync command will sync either the /system or /data
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# directories of an android device from a similar directory
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# on the host. So we fake one with symlinks to push the GOROOT
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# into a subdirectory of /data.
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export ANDROID_PRODUCT_OUT=/tmp/androidtest-$$
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FAKE_GOROOT=$ANDROID_PRODUCT_OUT/data/local/tmp/goroot
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mkdir -p $FAKE_GOROOT/src
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ln -s $GOROOT/src/cmd $FAKE_GOROOT/src/cmd
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ln -s $GOROOT/src/pkg $FAKE_GOROOT/src/pkg
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ln -s $GOROOT/test $FAKE_GOROOT/test
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ln -s $GOROOT/lib $FAKE_GOROOT/lib
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adb sync data
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rm -rf "$ANDROID_PRODUCT_OUT"
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# Run standard build and tests.
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./all.bash --no-clean

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