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#!/bin/bash
# Copyright 2023 Google Inc. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# Script to generate `gn desc` json outputs that are used as an input to the
# gn2bp conversion tool.
# Inputs:
# Arguments:
# -d dir: The directory that points to a local checkout of chromium/src.
# -r rev: The reference revision of upstream Chromium to use. Must match the
# last revision that has been imported using import_cronet.sh.
# Optional arguments:
# -f: Force reset the chromium/src directory.
set -e -x
OPTSTRING=d:fr:
usage() {
cat <<EOF
Usage: gen_gn_desc.sh -d dir -r rev [-f]
EOF
exit 1
}
# Run this script inside a full chromium checkout.
OUT_PATH="out/cronet"
#######################################
# Sets the chromium/src repository to a reference state.
# Arguments:
# rev, string
# chromium_dir, string
# force_reset, boolean
#######################################
function setup_chromium_src_repo() (
local -r rev="$1"
local -r chromium_dir="$2"
local -r force_reset="$3"
cd "${chromium_dir}"
git fetch --tags
if [ -n "${force_reset}" ]; then
git reset --hard
fi
git checkout "${rev}"
gclient sync \
--no-history \
--shallow \
--delete_unversioned_trees
)
#######################################
# Generate desc.json for a specified architecture.
# Globals:
# ANDROID_BUILD_TOP
# OUT_PATH
# Arguments:
# target_cpu, string
# chromium_dir, string
#######################################
function gn_desc() (
local -r target_cpu="$1"
local -r chromium_dir="$2"
local -a gn_args=(
"target_os = \"android\""
"enable_websockets = false"
"disable_file_support = true"
"is_component_build = false"
"use_partition_alloc = false"
"include_transport_security_state_preload_list = false"
"use_platform_icu_alternatives = true"
"default_min_sdk_version = 21"
"enable_reporting = true"
"use_hashed_jni_names = true"
"enable_base_tracing = false"
"is_cronet_build = true"
"is_debug = false"
"is_official_build = true"
"use_nss_certs = false"
"clang_use_default_sample_profile = false"
"media_use_ffmpeg=false"
"use_thin_lto=false"
"enable_resource_allowlist_generation=false"
"exclude_unwind_tables=true"
"symbol_level=1"
"enable_rust=false"
"is_cronet_for_aosp_build=true"
)
gn_args+=("target_cpu = \"${target_cpu}\"")
# Only set arm_use_neon on arm architectures to prevent warning from being
# written to json output.
if [[ "${target_cpu}" = "arm" ]]; then
gn_args+=("arm_use_neon = false")
fi
cd "${chromium_dir}"
# Configure gn args.
gn gen "${OUT_PATH}" --args="${gn_args[*]}"
# Generate desc.json.
local -r out_file="${ANDROID_BUILD_TOP}/external/cronet/android/tools/gn2bp/desc_${target_cpu}.json"
gn desc "${OUT_PATH}" --format=json --all-toolchains "//*" > "${out_file}"
)
while getopts "${OPTSTRING}" opt; do
case "${opt}" in
d) chromium_dir="${OPTARG}" ;;
f) force_reset=true ;;
r) rev="${OPTARG}" ;;
?) usage ;;
*) echo "'${opt}' '${OPTARG}'"
esac
done
if [ -z "${chromium_dir}" ]; then
echo "-d argument required"
usage
fi
if [ -z "${rev}" ]; then
echo "-r argument required"
usage
fi
if [ -z "${ANDROID_BUILD_TOP}" ]; then
echo "ANDROID_BUILD_TOP is not set. Please run source build/envsetup.sh && lunch"
exit 1
fi
setup_chromium_src_repo "${rev}" "${chromium_dir}" "${force_reset}"
gn_desc x86 "${chromium_dir}"
gn_desc x64 "${chromium_dir}"
gn_desc arm "${chromium_dir}"
gn_desc arm64 "${chromium_dir}"
gn_desc riscv64 "${chromium_dir}"
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