Add integration test for testing the arch variant passed to cc modules included in APEXES.

Resend aosp/2350557, with minor change on line 65 of apex_cc_module_arch_variant_tests.sh.
The pattern was:
  '.*android_target.*: ([0-9]+)$'
and is changed to:
  '.*opt-ST.*: ([0-9]+)$'
since the Bazel output directory name has been changed.

Bug: 258422889
Test: build/soong/tests/run_integration_tests.sh
Change-Id: Ib114bc0084d8ea2cd232d6478cc81a039b138bc4

tests/apex_cc_module_arch_variant_tests.sh

@@ -0,0 +1,94 @@
+#!/bin/bash
+
+# Copyright (C) 2022 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 -uo pipefail
+
+# Integration test for verifying arch variant cflags set on cc modules included
+# in Bazel-built apexes in the real source tree.
+
+if [ ! -e "build/make/core/Makefile" ]; then
+  echo "$0 must be run from the top of the Android source tree."
+  exit 1
+fi
+
+############
+# Test Setup
+############
+
+OUTPUT_DIR="$(mktemp -d tmp.XXXXXX)"
+BAZEL_OUTPUT_DIR="$OUTPUT_DIR/bazel"
+
+export TARGET_PRODUCT="aosp_arm64"
+[ "$#" -ge 1 ] && export TARGET_PRODUCT="$1"
+ARCH_VARIANT_CFLAG="armv8-a"
+[ "$#" -ge 2 ] && ARCH_VARIANT_CFLAG="$2"
+CPU_VARIANT_CFLAG=""
+[ "$#" -ge 3 ] && CPU_VARIANT_CFLAG="$3"
+
+function call_bazel() {
+  build/bazel/bin/bazel --output_base="$BAZEL_OUTPUT_DIR" $@
+}
+
+function cleanup {
+  # call bazel clean because some bazel outputs don't have w bits.
+  call_bazel clean
+  rm -rf "${OUTPUT_DIR}"
+}
+trap cleanup EXIT
+
+######################
+# Run bp2build / Bazel
+######################
+build/soong/soong_ui.bash --make-mode BP2BUILD_VERBOSE=1 --skip-soong-tests bp2build
+
+# Number of CppCompile actions with arch variant flag
+actions_with_arch_variant_num=$(call_bazel aquery --config=bp2build --config=ci --config=android \
+  'mnemonic("CppCompile", deps(//build/bazel/examples/apex/minimal:build.bazel.examples.apex.minimal.apex))' | grep -c "\-march=$ARCH_VARIANT_CFLAG")
+
+# Number of all CppCompile actions
+all_cppcompile_actions_num=0
+aquery_summary=$(call_bazel aquery --config=bp2build --config=ci --config=android --output=summary \
+  'mnemonic("CppCompile", deps(//build/bazel/examples/apex/minimal:build.bazel.examples.apex.minimal.apex))' \
+  | egrep -o '.*opt-ST.*: ([0-9]+)$' \
+  | cut -d: -f2 -)
+
+while read -r num;
+do
+  all_cppcompile_actions_num=$(($all_cppcompile_actions_num + $num))
+done <<< "$aquery_summary"
+
+if [ $actions_with_arch_variant_num -eq $all_cppcompile_actions_num ]
+then
+  echo "Pass: arch variant is set."
+else
+  echo "Error: number of CppCompile actions with arch variant set: actual=$actions_with_arch_variant_num, expected=$all_cppcompile_actions_num"
+  exit 1
+fi
+
+if [ $CPU_VARIANT_CFLAG ]
+then
+  # Number of CppCompiler actions with cpu variant flag
+  actions_with_cpu_variant_num=$(call_bazel aquery --config=bp2build --config=ci --config=android \
+    'mnemonic("CppCompile", deps(//build/bazel/examples/apex/minimal:build.bazel.examples.apex.minimal.apex))' | grep -c "\-mcpu=$CPU_VARIANT_CFLAG")
+
+  if [ $actions_with_cpu_variant_num -eq $all_cppcompile_actions_num ]
+  then
+    echo "Pass: cpu variant is set."
+  else
+    echo "Error: number of CppCompile actions with cpu variant set: actual=$actions_with_cpu_variant_num, expected=$all_cppcompile_actions_num"
+    exit 1
+  fi
+fi

tests/run_integration_tests.sh

@@ -14,3 +14,7 @@ TOP="$(readlink -f "$(dirname "$0")"/../../..)"
 # mock client.
 "$TOP/build/soong/tests/apex_comparison_tests.sh"
 "$TOP/build/soong/tests/apex_comparison_tests.sh" "module_arm64only"
+
+"$TOP/build/soong/tests/apex_cc_module_arch_variant_tests.sh"
+"$TOP/build/soong/tests/apex_cc_module_arch_variant_tests.sh" "aosp_arm" "armv7-a"
+"$TOP/build/soong/tests/apex_cc_module_arch_variant_tests.sh" "aosp_cf_arm64_phone" "armv8-a" "cortex-a53"