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 #!/bin/bash

 # Copyright (c) 2012 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.  It can either be

 # compiled with the Android tree or using the Android SDK/NDK. To build with

 # NDK/SDK: ". build/android/envsetup.sh --sdk".  Environment variable

 # ANDROID_SDK_BUILD=1 will then be defined and used in the rest of the setup to

 # specifiy build type.

 # When building WebView as part of Android we can't use the SDK. Other builds

 # default to using the SDK.

 # NOTE(yfriedman): This looks unnecessary but downstream the default value

 # should be 0 until all builds switch to SDK/NDK.

 if [[ "${CHROME_ANDROID_BUILD_WEBVIEW}" -eq 1 ]]; then

   export ANDROID_SDK_BUILD=0

 else

   export ANDROID_SDK_BUILD=1

 fi

 # Loop over args in case we add more arguments in the future.

 while [ "$1" != "" ]; do

   case $1 in

     -s | --sdk  ) export ANDROID_SDK_BUILD=1 ; shift ;;

     *  )          shift ; break ;;

   esac

 done

 if [[ "${ANDROID_SDK_BUILD}" -eq 1 ]]; then

   echo "Using SDK build"

 fi

 host_os=$(uname -s | sed -e 's/Linux/linux/;s/Darwin/mac/')

 case "${host_os}" in

   "linux")

     toolchain_dir="linux-x86_64"

     ;;

   "mac")

     toolchain_dir="darwin-x86"

     ;;

   *)

     echo "Host platform ${host_os} is not supported" >& 2

     return 1

 esac

 CURRENT_DIR="$(readlink -f "$(dirname $BASH_SOURCE)/../../")"

 if [[ -z "${CHROME_SRC}" ]]; then

   # If $CHROME_SRC was not set, assume current directory is CHROME_SRC.

   export CHROME_SRC="${CURRENT_DIR}"

 fi

 if [[ "${CURRENT_DIR/"${CHROME_SRC}"/}" == "${CURRENT_DIR}" ]]; then

   # If current directory is not in $CHROME_SRC, it might be set for other

   # source tree. If $CHROME_SRC was set correctly and we are in the correct

   # directory, "${CURRENT_DIR/"${CHROME_SRC}"/}" will be "".

   # Otherwise, it will equal to "${CURRENT_DIR}"

   echo "Warning: Current directory is out of CHROME_SRC, it may not be \

 the one you want."

   echo "${CHROME_SRC}"

 fi

 # Android sdk platform version to use

 export ANDROID_SDK_VERSION=16

 # Source functions script.  The file is in the same directory as this script.

 . "$(dirname $BASH_SOURCE)"/envsetup_functions.sh

 if [[ "${ANDROID_SDK_BUILD}" -eq 1 ]]; then

   sdk_build_init

 # Sets up environment for building Chromium for Android with source. Expects

 # android environment setup and lunch.

 elif [[ -z "$ANDROID_BUILD_TOP" || \

         -z "$ANDROID_TOOLCHAIN" || \

         -z "$ANDROID_PRODUCT_OUT" ]]; then

   echo "Android build environment variables must be set."

   echo "Please cd to the root of your Android tree and do: "

   echo "  . build/envsetup.sh"

   echo "  lunch"

   echo "Then try this again."

   echo "Or did you mean NDK/SDK build. Run envsetup.sh with --sdk argument."

   return 1

 elif [[ -n "$CHROME_ANDROID_BUILD_WEBVIEW" ]]; then

   webview_build_init

 else

   non_sdk_build_init

 fi

 # Workaround for valgrind build

 if [[ -n "$CHROME_ANDROID_VALGRIND_BUILD" ]]; then

 # arm_thumb=0 is a workaround for https://bugs.kde.org/show_bug.cgi?id=270709

   DEFINES+=" arm_thumb=0 release_extra_cflags='-fno-inline\

  -fno-omit-frame-pointer -fno-builtin' release_valgrind_build=1\

  release_optimize=1"

 fi

 # Source a bunch of helper functions

 . ${CHROME_SRC}/build/android/adb_device_functions.sh

 ANDROID_GOMA_WRAPPER=""

 if [[ -d $GOMA_DIR ]]; then

   ANDROID_GOMA_WRAPPER="$GOMA_DIR/gomacc"

 fi

 export ANDROID_GOMA_WRAPPER

 # Declare Android are cross compile.

 export GYP_CROSSCOMPILE=1

 export CXX_target="${ANDROID_GOMA_WRAPPER} \

     $(echo -n ${ANDROID_TOOLCHAIN}/*-g++)"

 # Performs a gyp_chromium run to convert gyp->Makefile for android code.

 android_gyp() {

   echo "GYP_GENERATORS set to '$GYP_GENERATORS'"

   # http://crbug.com/143889.

   # In case we are doing a Clang build, we have to unset CC_target and

   # CXX_target. Otherwise GYP ends up generating a gcc build (although we set

   # 'clang' to 1). This behavior was introduced by

   # 54d2f6fe6d8a7b9d9786bd1f8540df6b4f46b83f in GYP.

   (

     # Fork to avoid side effects on the user's environment variables.

     if echo "$GYP_DEFINES" | grep -qE '(clang|asan)'; then

       if echo "$CXX_target" | grep -q g++; then

         unset CXX_target

       fi

     fi

     "${CHROME_SRC}/build/gyp_chromium" --depth="${CHROME_SRC}" --check "$@"

   )

 }

 # FLOCK needs to be null on system that has no flock

 which flock > /dev/null || export FLOCK=