# Copyright 2014 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.

# This file contains common system config stuff for the Android build.

if (is_android) {
  if (!defined(default_android_sdk_root)) {
    default_android_sdk_root = "//third_party/android_tools/sdk"
    default_android_sdk_version = "22"
    default_android_sdk_build_tools_version = "22.0.1"
  }

  declare_args() {
    android_sdk_root = default_android_sdk_root
    android_sdk_version = default_android_sdk_version
    android_sdk_build_tools_version = default_android_sdk_build_tools_version
  }

  # Host stuff -----------------------------------------------------------------

  # Defines the name the Android build gives to the current host CPU
  # architecture, which is different than the names GN uses.
  if (host_cpu == "x64" || host_cpu == "x86") {
    android_host_arch = "x86_64"
  } else {
    assert(false, "Need Android toolchain support for your build CPU arch.")
  }

  # Defines the name the Android build gives to the current host CPU
  # architecture, which is different than the names GN uses.
  if (host_os == "linux") {
    android_host_os = "linux"
  } else if (host_os == "mac") {
    android_host_os = "darwin"
  } else {
    assert(false, "Need Android toolchain support for your build OS.")
  }

  # Directories and files ------------------------------------------------------
  #
  # We define may of the dirs strings here for each output architecture (rather
  # than just the current one) since these are needed by the Android toolchain
  # file to define toolchains for all possible targets in one pass.

  android_sdk = "${android_sdk_root}/platforms/android-${android_sdk_version}"

  # Path to the Android NDK and SDK.
  android_ndk_root = "//third_party/android_tools/ndk"
  android_ndk_include_dir = "$android_ndk_root/usr/include"

  android_sdk = "${android_sdk_root}/platforms/android-${android_sdk_version}"

  android_sdk_tools = "${android_sdk_root}/tools"
  android_sdk_build_tools =
      "${android_sdk_root}/build-tools/$android_sdk_build_tools_version"

  # Path to the SDK's android.jar
  android_sdk_jar = "$android_sdk/android.jar"

  zipalign_path = "$android_sdk_build_tools/zipalign"

  # Subdirectories inside android_ndk_root that contain the sysroot for the
  # associated platform.
  _android_api_level = 16
  x86_android_sysroot_subdir =
      "platforms/android-${_android_api_level}/arch-x86"
  arm_android_sysroot_subdir =
      "platforms/android-${_android_api_level}/arch-arm"
  mips_android_sysroot_subdir =
      "platforms/android-${_android_api_level}/arch-mips"
  _android64_api_level = 21
  x86_64_android_sysroot_subdir =
      "platforms/android-${_android64_api_level}/arch-x86_64"
  arm64_android_sysroot_subdir =
      "platforms/android-${_android64_api_level}/arch-arm64"
  mips64_android_sysroot_subdir =
      "platforms/android-${_android64_api_level}/arch-mips64"

  # Toolchain root directory for each build. The actual binaries are inside
  # a "bin" directory inside of these.
  _android_toolchain_version = "4.9"
  x86_android_toolchain_root = "$android_ndk_root/toolchains/x86-${_android_toolchain_version}/prebuilt/${android_host_os}-${android_host_arch}"
  arm_android_toolchain_root = "$android_ndk_root/toolchains/arm-linux-androideabi-${_android_toolchain_version}/prebuilt/${android_host_os}-${android_host_arch}"
  mips_android_toolchain_root = "$android_ndk_root/toolchains/mipsel-linux-android-${_android_toolchain_version}/prebuilt/${android_host_os}-${android_host_arch}"
  x86_64_android_toolchain_root = "$android_ndk_root/toolchains/x86_64-${_android_toolchain_version}/prebuilt/${android_host_os}-${android_host_arch}"
  arm64_android_toolchain_root = "$android_ndk_root/toolchains/aarch64-linux-android-${_android_toolchain_version}/prebuilt/${android_host_os}-${android_host_arch}"
  mips64_android_toolchain_root = "$android_ndk_root/toolchains/mips64el-${_android_toolchain_version}/prebuilt/${android_host_os}-${android_host_arch}"

  # Location of libgcc. This is only needed for the current GN toolchain, so we
  # only need to define the current one, rather than one for every platform
  # like the toolchain roots.
  if (current_cpu == "x86") {
    android_prebuilt_arch = "android-x86"
    _binary_prefix = "i686-linux-android"
    android_toolchain_root = "$x86_android_toolchain_root"
    android_libgcc_file = "$android_toolchain_root/lib/gcc/i686-linux-android/${_android_toolchain_version}/libgcc.a"
  } else if (current_cpu == "arm") {
    android_prebuilt_arch = "android-arm"
    _binary_prefix = "arm-linux-androideabi"
    android_toolchain_root = "$arm_android_toolchain_root"
    android_libgcc_file = "$android_toolchain_root/lib/gcc/arm-linux-androideabi/${_android_toolchain_version}/libgcc.a"
  } else if (current_cpu == "mipsel") {
    android_prebuilt_arch = "android-mips"
    _binary_prefix = "mipsel-linux-android"
    android_toolchain_root = "$mips_android_toolchain_root"
    android_libgcc_file = "$android_toolchain_root/lib/gcc/mipsel-linux-android/${_android_toolchain_version}/libgcc.a"
  } else if (current_cpu == "x64") {
    android_prebuilt_arch = "android-x86_64"
    _binary_prefix = "x86_64-linux-android"
    android_toolchain_root = "$x86_64_android_toolchain_root"
    android_libgcc_file = "$android_toolchain_root/lib/gcc/x86_64-linux-android/${_android_toolchain_version}/libgcc.a"
  } else if (current_cpu == "arm64") {
    android_prebuilt_arch = "android-arm64"
    _binary_prefix = "aarch64-linux-android"
    android_toolchain_root = "$arm64_android_toolchain_root"
    android_libgcc_file = "$android_toolchain_root/lib/gcc/aarch64-linux-android/${_android_toolchain_version}/libgcc.a"
  } else if (current_cpu == "mips64el") {
    android_prebuilt_arch = "android-mips64"
    _binary_prefix = "mips64el-linux-android"
    android_toolchain_root = "$mips64_android_toolchain_root"
    android_libgcc_file = "$android_toolchain_root/lib/gcc/mips64el-linux-android/${_android_toolchain_version}/libgcc.a"
  } else {
    assert(false, "Need android libgcc support for your target arch.")
  }

  android_tool_prefix = "$android_toolchain_root/bin/$_binary_prefix-"
  android_readelf = "${android_tool_prefix}readelf"
  android_objcopy = "${android_tool_prefix}objcopy"
  android_gdbserver =
      "$android_ndk_root/prebuilt/$android_prebuilt_arch/gdbserver/gdbserver"

  # Toolchain stuff ------------------------------------------------------------

  android_libcpp_root = "$android_ndk_root/sources/cxx-stl/llvm-libc++"
  if (component_mode == "shared_library") {
    android_libcpp_library = "c++_shared"
  } else {
    android_libcpp_library = "c++_static"
  }

  if (component_mode == "shared_library") {
    # By appending .cr, we prevent name collisions with libraries already
    # loaded by the Android zygote.
    android_product_extension = ".cr.so"
  } else {
    android_product_extension = ".so"
  }

  # ABI ------------------------------------------------------------------------

  if (current_cpu == "x86") {
    android_app_abi = "x86"
  } else if (current_cpu == "arm") {
    import("//build/config/arm.gni")
    if (arm_version < 7) {
      android_app_abi = "armeabi"
    } else {
      android_app_abi = "armeabi-v7a"
    }
  } else if (current_cpu == "mipsel") {
    android_app_abi = "mips"
  } else if (current_cpu == "x64") {
    android_app_abi = "x86_64"
  } else if (current_cpu == "arm64") {
    android_app_abi = "arm64-v8a"
  } else if (current_cpu == "mips64el") {
    android_app_abi = "mips64"
  } else {
    assert(false, "Unknown Android ABI: " + current_cpu)
  }

  android_log_tag = "\"flutter\""
}