Upstream: Set build target and evnvironment for Android

build/android/envsetup.sh

+#!/bin/bash
+# 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.
+
+# Sets up environment for building Chromium on Android. Only Android NDK,
+# Revision 6b in Linux or Mac is offically supported.

[John Grabowski, 2011/09/23 19:40:31]

in Linux --> on Linux

[michaelbai, 2011/09/26 17:15:13]

Done.

+#
+# To run this script, the system environment ANDROID_NDK_ROOT must be set
+# to Android NDK's root path.

[John Grabowski, 2011/09/23 19:40:31]

Add TODO here to develop a standard for NDK/SDK integration.

[michaelbai, 2011/09/26 17:15:13]

Done.

+#
+# If current path isn't the Chrome's src directory, CHROME_SRC must be set

[John Grabowski, 2011/09/23 19:40:31]

Not sure I like this... is a bit non-standard for Chrome. 
mento, WDYT?

[Peter Beverloo, 2011/09/23 21:55:28]

Since this script will be stored in build/android/, how about determining the
dirname of the current script (dirname $0) and then walking two directories up?

[michaelbai, 2011/09/26 17:15:13]

I am not sure how it work, most of time, this script will  be run in 'src'
directory, the output will be 'build/android'

+# to the Chrome's src directory.
+
+if [ ! -d "$ANDROID_NDK_ROOT" ]; then
+  echo "ANDROID_NDK_ROOT must be set to the path of Android NDK, Revision 6b."

[John Grabowski, 2011/09/23 19:40:31]

Provide download link

[michaelbai, 2011/09/26 17:15:13]

Done.

+  return 1
+fi
+
+host_os=$(uname -s | sed -e 's/Linux/linux/;s/Darwin/mac/')
+
+case "$host_os" in

[John Grabowski, 2011/09/23 19:40:31]

Is there a standard or suggested way of doing this?  E.g. a script to run in the
NDK which provides this directory name?  Would prefer to use something like that
if it exists instead of doing it by hand.

[michaelbai, 2011/09/26 17:15:13]

I didn't find it.

On 2011/09/23 19:40:31, John Grabowski wrote:

+  "linux")
+    toolchain_dir="linux-x86"
+    ;;
+  "mac")
+    toolchain_dir="darwin-x86"
+    ;;
+  *)
+    echo "Host platform $host_os is not supported"
+    return 1
+esac
+
+export ANDROID_TOOLCHAIN="$ANDROID_NDK_ROOT/toolchains/arm-linux-androideabi-4.4.3/prebuilt/$toolchain_dir/bin/"
+
+if [ ! -d "$ANDROID_TOOLCHAIN" ]; then
+  echo "Can not find Android toolchain in $ANDROID_TOOLCHAIN."

[Peter Beverloo, 2011/09/23 21:55:28]

Maybe emphasize that the person running the script may have the wrong version of
the NDK installed?

[michaelbai, 2011/09/26 17:15:13]

Done.

+  return 1
+fi
+
+if [ -z "$CHROME_SRC" ]; then
+  # if $CHROME_SRC was not set, assume current directory is CHROME_SRC.
+  export CHROME_SRC=$(pwd)
+fi
+
+if [ ! -d "$CHROME_SRC" ]; then
+  echo "CHROME_SRC must be set to the path of Chrome source code."
+  return 1
+fi
+
+make() {
+  # TODO(michaelbai): how to use ccache in NDK.
+  if [ -n "$USE_CCACHE" ]

[John Grabowski, 2011/09/23 19:40:31]

if/then on same line (like above)
Several spots here

[michaelbai, 2011/09/26 17:15:13]

Done.

+  then
+    if [ -e "$PREBUILT_CCACHE_PATH" ]
+    then
+      use_ccache_var="$PREBUILT_CCACHE_PATH "
+    else
+      use_ccache_var=""
+    fi
+  fi
+  if [ -f "$PWD/build/android/envsetup.sh" ]
+  then
+    CC="$use_ccache_var$CROSS_CC" CXX="$use_ccache_var$CROSS_CXX"
+    LINK="$CROSS_LINK" AR="$CROSS_AR" RANLIB="$CROSS_RANLIB" \
+      command make $*
+  else
+    command make $*
+  fi
+}
+
+# Performs a gyp_chromium run to convert gyp->Makefile for android code.
+android_gyp() {
+  "$CHROME_SRC"/build/gyp_chromium --depth="$CHROME_SRC"
+}
+
+LS="/bin/ls"  # Use directly to avoid any 'ls' alias that might be defined.
+export CROSS_AR="$($LS ${ANDROID_TOOLCHAIN}/*-ar | head -n1)"
+export CROSS_CC="$($LS ${ANDROID_TOOLCHAIN}/*-gcc | head -n1)"
+export CROSS_CXX="$($LS ${ANDROID_TOOLCHAIN}/*-g++ | head -n1)"
+export CROSS_LINK="$($LS ${ANDROID_TOOLCHAIN}/*-gcc | head -n1)"
+export CROSS_RANLIB="$($LS ${ANDROID_TOOLCHAIN}/*-ranlib | head -n1)"
+export OBJCOPY="$($LS ${ANDROID_TOOLCHAIN}/*-objcopy | head -n1)"
+export STRIP="$($LS ${ANDROID_TOOLCHAIN}/*-strip | head -n1)"
+
+# The set of GYP_DEFINES to pass to gyp. Use 'readlink -e' on directories
+# to canonicalize them (remove double '/', remove trailing '/', etc).
+DEFINES="OS=android"
+DEFINES="${DEFINES} android_build_type=0"  # Currently, Only '0' is supportted.
+DEFINES="${DEFINES} host_os=${host_os}"
+DEFINES="${DEFINES} linux_fpic=1"
+DEFINES="${DEFINES} release_optimize=s"
+DEFINES="${DEFINES} linux_use_tcmalloc=0"
+DEFINES="${DEFINES} disable_nacl=1"
+DEFINES="${DEFINES} remoting=0"
+DEFINES="${DEFINES} p2p_apis=0"
+DEFINES="${DEFINES} enable_touch_events=1"
+# TODO(bulach): use "shared_libraries" once the transition from executable
+# is over.

[Peter Beverloo, 2011/09/23 21:55:28]

Please check up with bulach@ if this to-do should be upstreamed. I'll add him to
the cc list.

[michaelbai, 2011/09/26 17:15:13]

We will not wait if the shared_libraries version is not ready then.

+DEFINES="${DEFINES} gtest_target_type=executable"
+if [ -z "$ANDROID_OFFICIAL_BUILD" ]; then
+  DEFINES="${DEFINES} branding=Chromium"
+else
+  DEFINES="${DEFINES} branding=Chrome"
+  DEFINES="${DEFINES} buildtype=Official"
+fi
+
+# If the TARGET_PRODUCT wasn't set, use 'full' by default.
+if [ -z "$TARGET_PRODUCT" ]; then
+  TARGET_PRODUCT="full"
+fi
+
+# The following defines will affect ARM code generation of both C/C++ compiler
+# and V8 mksnapshot.
+case "${TARGET_PRODUCT}" in
+  "full")
+    DEFINES="${DEFINES} target_arch=arm"
+    DEFINES="${DEFINES} arm_neon=0 armv7=0 arm_thumb=1 arm_fpu=vfp"

[Peter Beverloo, 2011/09/23 21:55:28]

WebKit currently assumes arm_neon=1 and armv7=1, we should choose a default
configuration.

[michaelbai, 2011/09/26 17:15:13]

Let's discuss off line, once we make the decision, change should be easy. 

+    ;;
+   *x86*)
+    # TODO(tedbo): The ia32 build fails on ffmpeg, so we disable it here.

[Peter Beverloo, 2011/09/23 21:55:28]

We completely disable ffmpeg, only defining use_libffmpeg=0 in the non-default
case seems odd. Also, please don't add the TODO for tedbo.

[michaelbai, 2011/09/26 17:15:13]

Done.

+    DEFINES="${DEFINES} target_arch=ia32 use_libffmpeg=0"
+    ;;
+   *)
+     echo "TARGET_PRODUCT:${TARGET_PRODUCT} is not supported."
+     return 1
+esac
+
+export GYP_DEFINES="$DEFINES"
+
+# Use the "android" flavor of the Makefile generator for both Linux and OS X.
+export GYP_GENERATORS="make-android"
+
+# We want to use our version of "all" targets.
+export CHROMIUM_GYP_FILE="${CHROME_SRC}/build/all_android.gyp"
+
+