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+#!/bin/bash
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+
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+# Copyright (C) 2023 The Android Open Source Project
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+#
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+# Licensed under the Apache License, Version 2.0 (the "License");
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+# you may not use this file except in compliance with the License.
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+# You may obtain a copy of the License at
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+#
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+# http://www.apache.org/licenses/LICENSE-2.0
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+#
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+# Unless required by applicable law or agreed to in writing, software
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+# distributed under the License is distributed on an "AS IS" BASIS,
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+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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+# See the License for the specific language governing permissions and
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+# limitations under the License.
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+
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+set -euo pipefail
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+
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+# Soong/Bazel integration test to build the mainline modules in mixed build and
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+# compare the DCLA libs extracted from those modules to ensure they are identical.
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+
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+if [ ! -e "build/make/core/Makefile" ]; then
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+ echo "$0 must be run from the top of the Android source tree."
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+ exit 1
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+fi
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+
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+TARGET_PRODUCTS=(
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+ module_arm64
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+ module_x86_64
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+)
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+
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+MODULES=(
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+ # These modules depend on the DCLA libs
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+ com.android.adbd
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+ com.android.art
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+ com.android.art.debug
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+ com.android.art.testing
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+ com.android.btservices
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+ com.android.conscrypt
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+ com.android.i18n
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+ com.android.media
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+ com.android.media.swcodec
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+ com.android.resolv
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+ com.android.runtime
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+ com.android.tethering
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+)
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+
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+DCLA_LIBS=(
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+ libbase.so
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+ libc++.so
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+ libcrypto.so
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+ libcutils.so
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+)
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+
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+if [[ -z ${OUT_DIR+x} ]]; then
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+ OUT_DIR="out"
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+fi
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+
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+if [[ -z ${ANDROID_HOST_OUT+x} ]]; then
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+ export ANDROID_HOST_OUT="out/host/linux-x86"
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+fi
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+
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+######################
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+# Build deapexer and debugfs
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+######################
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+DEAPEXER="${ANDROID_HOST_OUT}/bin/deapexer"
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+DEBUGFS="${ANDROID_HOST_OUT}/bin/debugfs"
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+if [[ ! -f "${DEAPEXER}" ]] || [[ ! -f "${DEBUGFS}" ]]; then
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+ build/soong/soong_ui.bash --make-mode --skip-soong-tests deapexer debugfs
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+fi
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+
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+DEAPEXER="${DEAPEXER} --debugfs_path=${DEBUGFS}"
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+
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+############
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+# Test Setup
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+############
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+OUTPUT_DIR="$(mktemp -d tmp.XXXXXX)"
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+
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+function cleanup {
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+ rm -rf "${OUTPUT_DIR}"
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+}
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+trap cleanup EXIT
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+
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+#######
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+# Tests
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+#######
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+
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+function extract_dcla_libs() {
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+ local product=$1; shift
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+ for module in "${MODULES[@]}"; do
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+ local apex="${OUTPUT_DIR}/${product}/${module}.apex"
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+ local extract_dir="${OUTPUT_DIR}/${product}/${module}/extract"
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+
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+ $DEAPEXER extract "${apex}" "${extract_dir}"
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+ done
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+}
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+
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+function compare_dcla_libs() {
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+ local product=$1; shift
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+
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+ for lib in "${DCLA_LIBS[@]}"; do
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+ for arch in lib lib64; do
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+ local prev_sha=""
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+ for module in "${MODULES[@]}"; do
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+ local file="${OUTPUT_DIR}/${product}/${module}/extract/${arch}/${lib}"
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+ if [[ ! -f "${file}" ]]; then
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+ # not all libs are present in a module
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+ echo "file doesn't exist: ${file}"
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+ continue
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+ fi
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+ sha=$(sha1sum ${file})
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+ sha="${sha% *}"
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+ if [ "${prev_sha}" == "" ]; then
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+ prev_sha="${sha}"
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+ elif [ "${sha}" != "${prev_sha}" ]; then
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+ echo "Test failed, ${lib} has different hash value"
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+ exit 1
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+ fi
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+ done
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+ done
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+ done
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+}
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+
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+export UNBUNDLED_BUILD_SDKS_FROM_SOURCE=true # don't rely on prebuilts
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+export TARGET_BUILD_APPS="${MODULES[@]}"
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+for product in "${TARGET_PRODUCTS[@]}"; do
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+ ###########
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+ # Build the mainline modules
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+ ###########
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+ packages/modules/common/build/build_unbundled_mainline_module.sh \
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+ --product "${product}" \
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+ --dist_dir "${OUTPUT_DIR}/${product}"
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+
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+ extract_dcla_libs "${product}"
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+ compare_dcla_libs "${product}"
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+done
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+
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+echo "Test passed"
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