Upstream: The script to install Android SDK, NDK.

build/install-build-deps-android.sh

+#!/bin/bash
+
+set -e
+
+# Copyright (c) 2011 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+# The script is to install Android SDK, NDK for build chromium on Android, and
+# doesn't need to run as root.
+
+# Using Android 3.2, API Level: 13 (Honeycomb). The SDK package is about 30M.
+SDK_FILE_NAME="android-sdk_r13-linux_x86.tgz"
+SDK_DOWNLOAD_URL="http://dl.google.com/android/${SDK_FILE_NAME}"
+SDK_MD5SUM="d80d7530a46c665644ae76084a9a0dc4"
+
+# Using "ANDROID_SDK_ROOT/tools/android list targets" to get the matching target
+# id which will be loaded in simulator for testing.
+# For example: the output of the listed the target could be below, and the
+# 'android-13' is the SDK_TARGET_ID in this case.
+# id: 9 or "android-13"
+#     Name: Android 3.2
+#     Type: Platform
+#     API level: 13
+#     Revision: 1
+#     Skins: WXGA (default)
+SDK_TARGET_ID=android-13
+
+# Using NDK r6b; The package is about 44M.
+NDK_FILE_NAME="android-ndk-r6b-linux-x86.tar.bz2"
+NDK_DOWNLOAD_URL="http://dl.google.com/android/ndk/${NDK_FILE_NAME}"
+NDK_MD5SUM="309f35e49b64313cfb20ac428df4cec2"
+
+# The temporay directory used to store the downloaded file.

[Mark Mentovai, 2011/10/06 17:36:40]

Fix spelling: temporary

[michaelbai, 2011/10/06 18:04:49]

Done.

+TEMPDIR=$(mktemp -d)
+
+##########################################################
+# Download and install a tgz package by wget and tar -xvf.
+# Arguments:
+#   local_file_name, the name of downloaded file.
+#   download_url, the url to download the package.
+#   md5, the package's md5 which could be found in download page.
+#   install_path, where the package should be installed.
+# Returns:
+#   None
+##########################################################

[Mark Mentovai, 2011/10/06 17:36:40]

Say that a side effect of this is that it changes directory.

You accounted for this properly by invoking it in parentheses.

[michaelbai, 2011/10/06 18:04:49]

Done.

+install_dev_kit() {
+  local local_file_name="${1}"
+  local download_url="${2}"
+  local md5="${3}"
+  local install_path="${4}"
+
+  cd "${TEMPDIR}"
+  wget "${download_url}"
+
+  local computed_md5=$(md5sum "${local_file_name}" | cut -d' ' -f1)
+  if [[ "${computed_md5}" != "${md5}" ]]; then
+    echo "Downloaded ${local_file_name} has bad md5sum, which is expected" >& 2
+    echo "to be ${md5} but was ${computed_md5}" >& 2
+    exit 1
+  fi
+
+  echo "Install ${local_file_name}"
+  mv "${local_file_name}" "${install_path}"
+  cd "${install_path}"
+  tar -xvf "${local_file_name}"
+}
+
+trap " rm -rf ${TEMPDIR} " EXIT

[Mark Mentovai, 2011/10/06 17:36:40]

I’m glad you found this! I was secretly hoping.

What’s with the extra space inside the " quotes "?

One thing I like to do with this to alleviate problems with quoting ${TEMPDIR}
properly is to break it into a function. The function body handles a couple
other things:

TEMPDIR=$(mktemp -d)
cleanup() {
  local status=${?}
  trap - EXIT
  rm -rf "${TEMPDIR}"
  exit ${status}
}
trap cleanup EXIT

And I like to keep it all together so that it’s clear that it goes together.

The “exit ${status}” thing ensures that the script exits with the proper exit
status and not rm’s exit status.

[michaelbai, 2011/10/06 18:04:49]

Done. :)

+
+if [[ -z "${ANDROID_SDK_ROOT}" ]]; then
+  echo "Please set ANDROID_SDK_ROOT to where they should installed to." >& 2
+  echo "For example: /usr/local/android-sdk-linux_x86" >& 2
+  exit 1
+fi
+
+if [[ -z "${ANDROID_NDK_ROOT}" ]]; then
+  echo "Please set ANDROID_NDK_ROOT to where they should installed to." >& 2
+  echo "For example: /usr/local/android-ndk-r6b" >& 2
+  exit 1
+fi
+
+# Install Android SDK if it doesn't exist.
+if [[ ! -d "${ANDROID_SDK_ROOT}" ]]; then
+  echo 'Install ANDROID SDK ...'
+  (install_dev_kit "${SDK_FILE_NAME}" "${SDK_DOWNLOAD_URL}" "${SDK_MD5SUM}" \
+                  $(dirname "${ANDROID_SDK_ROOT}"))
+fi
+
+# Install the target if it doesn't exist. The package installed above contains
+# no platform, platform-tool or tool, all those should be installed by
+# ${ANDROID_SDK_ROOT}/tools/android.
+if [[ ! $("${ANDROID_SDK_ROOT}/tools/android" list targets \
+  | grep -q "${SDK_TARGET_ID}") ]]; then
+  # Updates the SDK by installing the necessary components.
+  # From current configuration, all android platforms will be installed.
+  # This will take a little bit long time.
+  echo "Install platform, platform-tool and tool ..."
+  "${ANDROID_SDK_ROOT}"/tools/android update sdk --no-ui \
+    --filter platform,platform-tool,tool
+fi
+
+# Create a Android Virtual Device named 'buildbot' with default hardware
+# configuration and override the existing one, since there is no easy way to
+# check whether current AVD has correct configuration and it takes almost no
+# time to create a new one.
+"${ANDROID_SDK_ROOT}/tools/android" --silent create avd --name buildbot \
+  --target ${SDK_TARGET_ID} --force <<< "no"
+
+# Install Android NDK if it doesn't exist.
+if [[ ! -d "${ANDROID_NDK_ROOT}" ]]; then
+  echo 'Install ANDROID NDK ...'
+  (install_dev_kit "${NDK_FILE_NAME}" "${NDK_DOWNLOAD_URL}" "${NDK_MD5SUM}" \
+                  $(dirname "${ANDROID_NDK_ROOT}"))
+fi