Move construct_context.sh from Make to Soong. Update OWNERS list.

This script belongs with other manifest-related scripts, and the future
plan is to rewrite it in Python and share common functionality with
other scripts.

Test: lunch aosp_cf_x86_phone-userdebug && m
Bug: 132357300
Change-Id: I4b90129e5023ca1a2c818fc160c34b0b7da943ef

dexpreopt/config.go

@@ -383,7 +383,7 @@ func createGlobalSoongConfig(ctx android.ModuleContext) *GlobalSoongConfig {
 		SoongZip:         ctx.Config().HostToolPath(ctx, "soong_zip"),
 		Zip2zip:          ctx.Config().HostToolPath(ctx, "zip2zip"),
 		ManifestCheck:    ctx.Config().HostToolPath(ctx, "manifest_check"),
-		ConstructContext: android.PathForSource(ctx, "build/make/core/construct_context.sh"),
+		ConstructContext: android.PathForSource(ctx, "build/soong/scripts/construct_context.sh"),
 	}
 }
 

scripts/OWNERS

@@ -1,3 +1,4 @@
 per-file system-clang-format,system-clang-format-2 = enh@google.com,smoreland@google.com
 per-file build-mainline-modules.sh = ngeoffray@google.com,paulduffin@google.com,mast@google.com
 per-file build-aml-prebuilts.sh = ngeoffray@google.com,paulduffin@google.com,mast@google.com
+per-file construct_context.sh = ngeoffray@google.com,calin@google.com,mathieuc@google.com,skvadrik@google.com

scripts/construct_context.sh

@@ -0,0 +1,78 @@
+#!/bin/bash
+#
+# Copyright (C) 2018 The Android Open Source Project
+#
+# 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.
+
+set -e
+
+# target_sdk_version: parsed from manifest
+#
+# outputs
+# class_loader_context_arg: final class loader conext arg
+# stored_class_loader_context_arg: final stored class loader context arg
+
+if [ -z "${target_sdk_version}" ]; then
+    echo "ERROR: target_sdk_version not set"
+    exit 2
+fi
+
+# The hidl.manager shared library has a dependency on hidl.base. We'll manually
+# add that information to the class loader context if we see those libraries.
+hidl_manager="android.hidl.manager-V1.0-java"
+hidl_base="android.hidl.base-V1.0-java"
+
+function add_to_contexts {
+  for i in $1; do
+    if [[ -z "${class_loader_context}" ]]; then
+      export class_loader_context="PCL[$i]"
+    else
+      export class_loader_context+="#PCL[$i]"
+    fi
+    if [[ $i == *"$hidl_manager"* ]]; then
+      export class_loader_context+="{PCL[${i/$hidl_manager/$hidl_base}]}"
+    fi
+  done
+
+  for i in $2; do
+    if [[ -z "${stored_class_loader_context}" ]]; then
+      export stored_class_loader_context="PCL[$i]"
+    else
+      export stored_class_loader_context+="#PCL[$i]"
+    fi
+    if [[ $i == *"$hidl_manager"* ]]; then
+      export stored_class_loader_context+="{PCL[${i/$hidl_manager/$hidl_base}]}"
+    fi
+  done
+}
+
+# The order below must match what the package manager also computes for
+# class loader context.
+
+if [[ "${target_sdk_version}" -lt "28" ]]; then
+  add_to_contexts "${conditional_host_libs_28}" "${conditional_target_libs_28}"
+fi
+
+if [[ "${target_sdk_version}" -lt "29" ]]; then
+  add_to_contexts "${conditional_host_libs_29}" "${conditional_target_libs_29}"
+fi
+
+if [[ "${target_sdk_version}" -lt "30" ]]; then
+  add_to_contexts "${conditional_host_libs_30}" "${conditional_target_libs_30}"
+fi
+
+add_to_contexts "${dex_preopt_host_libraries}" "${dex_preopt_target_libraries}"
+
+# Generate the actual context string.
+export class_loader_context_arg="--class-loader-context=PCL[]{${class_loader_context}}"
+export stored_class_loader_context_arg="--stored-class-loader-context=PCL[]{${stored_class_loader_context}}"