tools/android/run_module_app/build_apk.sh - 3p/openxla/iree - Git at Google

 #!/bin/bash
 # Copyright 2020 The IREE Authors
 #
 # Licensed under the Apache License v2.0 with LLVM Exceptions.
 # See https://llvm.org/LICENSE.txt for license information.
 # SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception

 set -e

 #########################
 # Script input parameters
 #########################

 echo "=== A script for building iree-run-module apk ==="
 echo "This script wraps iree-run-module together with a"
 echo "specific IREE VM module and invocation information."
 echo ""
 echo "At a minimum, it expects the following env vars:"
 echo "* ANDROID_SDK_ROOT"
 echo "* ANDROID_NDK_ROOT"
 echo "* ANDROID_SDK_BUILD_TOOLS_VERSION"
 echo "See the script for details and more controls."
 echo "===-------------------------------------------==="
 echo ""

 print_usage_and_exit() {
   echo "Usage: $0 <artifact-directory> "
   echo "       --driver <driver>"
   echo "       --module_file <input-module-file> "
   echo "       --entry_function <entry-function> "
   echo "       --function_inputs_file <input-buffer-file> "
   exit 1
 }

 while (( "$#" )); do
   case "$1" in
     --driver)
       if [[ -n "$2" ]] && [[ ${2:0:1} != "-" ]]; then
         IREE_DRIVER=$2
         shift 2
       else
         echo "Error: missing argument for $1" >&2
         print_usage_and_exit
       fi
       ;;
     --module_file)
       if [[ -n "$2" ]] && [[ ${2:0:1} != "-" ]]; then
         IREE_INPUT_MODULE_FILE=$(readlink -f $2)
         shift 2
       else
         echo "Error: missing argument for $1" >&2
         print_usage_and_exit
       fi
       ;;
     --entry_function)
       if [[ -n "$2" ]] && [[ ${2:0:1} != "-" ]]; then
         IREE_ENTRY_FUNCTION=$2
         shift 2
       else
         echo "Error: missing argument for $1" >&2
         print_usage_and_exit
       fi
       ;;
     --function_inputs_file)
       if [[ -n "$2" ]] && [[ ${2:0:1} != "-" ]]; then
         IREE_INPUT_BUFFER_FILE=$(readlink -f $2)
         shift 2
       else
         echo "Error: missing argument for $1" >&2
         print_usage_and_exit
       fi
       ;;
     -*|--*=) # Unsupported flags
       echo "Error: Unsupported flag $1" >&2
       exit 1
       ;;
     *) # Positional arguments
       if [[ -z "${IREE_ARTIFACT_ROOT+x}" ]]; then
         IREE_ARTIFACT_ROOT=$(readlink -f $1)
       else
         echo "Error: <artifact-directory> already set to ${IREE_ARTIFACT_ROOT}" >&2
         print_usage_and_exit
       fi
       shift
       ;;
   esac
 done

 if [[ -z "${IREE_ARTIFACT_ROOT}" ]] || [[ -z "${IREE_INPUT_MODULE_FILE}" ]] || \
    [[ -z "${IREE_ENTRY_FUNCTION}" ]] || [[ -z "${IREE_INPUT_BUFFER_FILE}" ]] || \
    [[ -z "${IREE_DRIVER}" ]]; then
   echo "Error: missing necessary parameters" >&2
   print_usage_and_exit
 fi

 #################################
 # IREE Android app configurations
 #################################

 # The final Android APK name; default to "iree-run-module.apk".
 IREE_APK_NAME="${IREE_APK_NAME:-iree-run-module}"
 # The CMAKE build type for compiling IREE. default to Release.
 IREE_BUILD_TYPE="${IREE_BUILD_TYPE:-Release}"
 # The target Android API level; default to Android 10 (API level 29).
 IREE_ANDROID_API_LEVEL="${IREE_ANDROID_API_LEVEL:-29}"
 # The target Android platform ABI; default to arm64-v8a.
 IREE_ANDROID_ABI="${IREE_ANDROID_ABI:-arm64-v8a}"

 ################################
 # Android SDK/NDK configurations
 ################################

 # Android SDK root; must be provided as environment variable.
 # By default Android Studio uses
 # * $HOME/Android/Sdk for Linux.
 # * $HOME/Library/Android/sdk for macOS.
 # * $%LOCALAPPDATA%\Android\sdk for Windows.
 ANDROID_SDK_ROOT="${ANDROID_SDK_ROOT:?environment variable not set}"
 # Android NDK root; must be provided as environment variable.
 ANDROID_NDK_ROOT="${ANDROID_NDK_ROOT:?environment variable not set}"
 # Android SDK build tools version; must be provided as environment variable.
 ANDROID_SDK_BUILD_TOOLS_VERSION="${ANDROID_SDK_BUILD_TOOLS_VERSION?environment variable not set}"
 # Key store for signing apk files; default to Android debug keystore created
 # by Android Studio.
 ANDROID_KEYSTORE="${ANDROID_KEYSTORE:-${HOME}/.android/debug.keystore}"

 ######################
 # IREE build toolchain
 ######################

 CMAKE_BIN="${CMAKE_BIN:-$(which cmake)}"
 NINJA_BIN="${NINJA_BIN:-$(which ninja)}"
 CC_BIN="${CC_BIN:-$(which clang)}"
 CXX_BIN="${CXX_BIN:-$(which clang++)}"
 JAVAC_BIN="${JAVAC_BIN:-$(which javac)}"

 ##################################
 # IREE source/artifact directories
 ##################################

 # IREE project source root.
 IREE_SOURCE_ROOT="$(git rev-parse --show-toplevel)"
 # iree-run-module Android app source root.
 IREE_NATIVE_APP_SOURCE_ROOT="${IREE_SOURCE_ROOT?}/tools/android/run_module_app"

 # Directory for IREE native code intermediate intermediate artifacts.
 IREE_NATIVE_LIB_BUILD_DIR="${IREE_ARTIFACT_ROOT?}/iree/${IREE_BUILD_TYPE?}"
 # Directory for holding APK parts.
 IREE_APK_PARTS_DIR="${IREE_ARTIFACT_ROOT?}/parts"
 # Directory for IREE native libraries.
 IREE_NATIVE_LIB_DIR="${IREE_APK_PARTS_DIR?}/libs/lib/${IREE_ANDROID_ABI?}"
 # Directory for Android app assets.
 IREE_ASSET_DIR="${IREE_APK_PARTS_DIR?}/assets"
 # Directory for Android app R.class.
 IREE_RESOURCE_GEN_DIR="${IREE_APK_PARTS_DIR?}/rclass"

 #########################
 # Android build toolchain
 #########################

 ANDROID_SDK_BUILD_TOOLS_DIR="${ANDROID_SDK_ROOT?}/build-tools/${ANDROID_SDK_BUILD_TOOLS_VERSION?}"
 ANDROID_SDK_PLATFORMS_DIR="${ANDROID_SDK_ROOT?}/platforms/android-${IREE_ANDROID_API_LEVEL?}"

 AAPT_BIN="${ANDROID_SDK_BUILD_TOOLS_DIR?}/aapt"
 DX_BIN="${ANDROID_SDK_BUILD_TOOLS_DIR?}/dx"
 ZIPALIGN_BIN="${ANDROID_SDK_BUILD_TOOLS_DIR?}/zipalign"
 APKSIGNER_BIN="${ANDROID_SDK_BUILD_TOOLS_DIR?}/apksigner"

 AAPT_ADD="${AAPT_BIN?} add"
 # Link in the Android framework classes and disable compression for IREE
 # bytecode modules. This allows us to mmap the file directly.
 AAPT_PACK="${AAPT_BIN?} package -f -I ${ANDROID_SDK_PLATFORMS_DIR?}/android.jar -0 vmfb"
 DX="${DX_BIN?} --dex"
 ZIPALIGN="${ZIPALIGN_BIN?} -f -p 4"
 APKSIGN="${APKSIGNER_BIN?} sign"
 JAVAC="${JAVAC_BIN?} -classpath ${ANDROID_SDK_PLATFORMS_DIR?}/android.jar -sourcepath ${IREE_RESOURCE_GEN_DIR?} -d ${IREE_APK_PARTS_DIR?}"

 #############################
 # Build IREE native libraries
 #############################

 mkdir -p "${IREE_NATIVE_LIB_BUILD_DIR?}"

 echo ">>> Building IREE native libraries <<<"

 IREE_NATIVE_LIB_NAME=iree_tools_android_run_module_app_iree_run_module_app

 pushd "${IREE_NATIVE_LIB_BUILD_DIR?}"
 "${CMAKE_BIN?}" "${IREE_SOURCE_ROOT?}" -G Ninja \
   -DCMAKE_BUILD_TYPE="${IREE_BUILD_TYPE?}" \
   -DCMAKE_TOOLCHAIN_FILE="${ANDROID_NDK_ROOT?}/build/cmake/android.toolchain.cmake" \
   -DANDROID_ABI="${IREE_ANDROID_ABI?}" \
   -DANDROID_PLATFORM="android-${IREE_ANDROID_API_LEVEL?}" \
   -DIREE_HOST_C_COMPILER="${CC_BIN?}" \
   -DIREE_HOST_CXX_COMPILER="${CXX_BIN?}" \
   -DIREE_BUILD_COMPILER=OFF \
   -DIREE_BUILD_TESTS=OFF \
   -DIREE_BUILD_SAMPLES=OFF
 "${NINJA_BIN?}" "${IREE_NATIVE_LIB_NAME?}"
 popd

 #####################
 # Package Android app
 #####################

 # Clean artifacts from previous runs.
 rm -rf "${IREE_ARTIFACT_ROOT?}/${IREE_APK_NAME?}.apk" "${IREE_APK_PARTS_DIR?}"

 echo ">>> Generating AndroidManifest.xml <<<"

 # Create an AndroidManifest.xml with proper target SDK version.
 mkdir -p "${IREE_APK_PARTS_DIR?}"
 IREE_ANDROID_API_LEVEL="${IREE_ANDROID_API_LEVEL?}" envsubst \
   < "${IREE_NATIVE_APP_SOURCE_ROOT?}/AndroidManifest.xml.template" \
   > "${IREE_APK_PARTS_DIR?}/AndroidManifest.xml"

 echo ">>> Preparing shared libraries and vm module information <<<"

 # Find the compiled iree_run_module_app shared library and symlink it to a
 # known location for packaging.
 mkdir -p "${IREE_NATIVE_LIB_DIR?}"
 IREE_NATIVE_LIB=$(find ${IREE_NATIVE_LIB_BUILD_DIR?} -name "lib${IREE_NATIVE_LIB_NAME?}.so")
 # Note: the target link name must match with
 # run_module_app/AndroidManifest.xml.template.
 ln -sf "${IREE_NATIVE_LIB?}" "${IREE_NATIVE_LIB_DIR?}/libiree_run_module_app.so"

 # Copy the VM FlatBuffer and iree-run-module invocation related information
 # over as assets.
 mkdir -p "${IREE_ASSET_DIR?}"
 # Note: the following files must match with run_module_app/src/main.cc.
 cp "${IREE_INPUT_MODULE_FILE?}" "${IREE_ASSET_DIR?}/module.vmfb"
 cp "${IREE_INPUT_BUFFER_FILE?}" "${IREE_ASSET_DIR?}/inputs.txt"
 echo -n "${IREE_ENTRY_FUNCTION?}" > "${IREE_ASSET_DIR?}/entry_function.txt"
 echo -n "${IREE_DRIVER?}" > "${IREE_ASSET_DIR?}/driver.txt"

 echo ">>> Compiling app resources <<<"

 # Generate the R.java for resources.
 mkdir -p "${IREE_RESOURCE_GEN_DIR?}"
 ${AAPT_PACK?} --non-constant-id -m \
   -M "${IREE_APK_PARTS_DIR?}/AndroidManifest.xml" \
   -S "${IREE_NATIVE_APP_SOURCE_ROOT?}/res" \
   -J "${IREE_RESOURCE_GEN_DIR?}" \
   --generate-dependencies

 # Compile the R.java and create classes.dex out of it for Android.
 echo "Using javac: '${JAVAC_BIN?}'"
 ${JAVAC?} "${IREE_RESOURCE_GEN_DIR?}"/com/google/iree/run_module/*.java
 ${DX?} --output="${IREE_APK_PARTS_DIR?}/classes.dex" "${IREE_APK_PARTS_DIR?}"

 echo ">>> Packaging apk file <<<"

 # Package assets and shared libraries into an apk file.
 ${AAPT_PACK?} -m \
   -M "${IREE_APK_PARTS_DIR?}/AndroidManifest.xml" \
   -S "${IREE_NATIVE_APP_SOURCE_ROOT?}/res" \
   -A "${IREE_APK_PARTS_DIR?}/assets" \
   -F "${IREE_APK_PARTS_DIR?}/${IREE_APK_NAME?}.unaligned.apk" \
   --shared-lib "${IREE_APK_PARTS_DIR?}/libs"

 pushd "${IREE_APK_PARTS_DIR?}"
 # Also package the resources into the apk file.
 ${AAPT_ADD?} "${IREE_APK_NAME?}.unaligned.apk" classes.dex
 echo ">>> Aligning apk file <<<"
 ${ZIPALIGN?} "${IREE_APK_NAME?}.unaligned.apk" "${IREE_APK_NAME?}.apk"
 echo ">>> Signing apk file <<<"
 echo "NOTE: if you are using the Android Studio's debug keystore, the password is 'android'."
 ${APKSIGN?} --ks "${ANDROID_KEYSTORE?}" --min-sdk-version 28 "${IREE_APK_NAME?}.apk"
 mv "${IREE_APK_NAME?}.apk" "${IREE_ARTIFACT_ROOT?}"
 popd

 echo ">>> Done: '${IREE_ARTIFACT_ROOT?}/${IREE_APK_NAME?}.apk' <<<"
	#!/bin/bash
	# Copyright 2020 The IREE Authors
	#
	# Licensed under the Apache License v2.0 with LLVM Exceptions.
	# See https://llvm.org/LICENSE.txt for license information.
	# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception

	set -e

	#########################
	# Script input parameters
	#########################

	echo "=== A script for building iree-run-module apk ==="
	echo "This script wraps iree-run-module together with a"
	echo "specific IREE VM module and invocation information."
	echo ""
	echo "At a minimum, it expects the following env vars:"
	echo "* ANDROID_SDK_ROOT"
	echo "* ANDROID_NDK_ROOT"
	echo "* ANDROID_SDK_BUILD_TOOLS_VERSION"
	echo "See the script for details and more controls."
	echo "===-------------------------------------------==="
	echo ""

	print_usage_and_exit() {
	echo "Usage: $0 <artifact-directory> "
	echo " --driver <driver>"
	echo " --module_file <input-module-file> "
	echo " --entry_function <entry-function> "
	echo " --function_inputs_file <input-buffer-file> "
	exit 1
	}

	while (( "$#" )); do
	case "$1" in
	--driver)
	if [[ -n "$2" ]] && [[ ${2:0:1} != "-" ]]; then
	IREE_DRIVER=$2
	shift 2
	else
	echo "Error: missing argument for $1" >&2
	print_usage_and_exit
	fi
	;;
	--module_file)
	if [[ -n "$2" ]] && [[ ${2:0:1} != "-" ]]; then
	IREE_INPUT_MODULE_FILE=$(readlink -f $2)
	shift 2
	else
	echo "Error: missing argument for $1" >&2
	print_usage_and_exit
	fi
	;;
	--entry_function)
	if [[ -n "$2" ]] && [[ ${2:0:1} != "-" ]]; then
	IREE_ENTRY_FUNCTION=$2
	shift 2
	else
	echo "Error: missing argument for $1" >&2
	print_usage_and_exit
	fi
	;;
	--function_inputs_file)
	if [[ -n "$2" ]] && [[ ${2:0:1} != "-" ]]; then
	IREE_INPUT_BUFFER_FILE=$(readlink -f $2)
	shift 2
	else
	echo "Error: missing argument for $1" >&2
	print_usage_and_exit
	fi
	;;
	-\|--=) # Unsupported flags
	echo "Error: Unsupported flag $1" >&2
	exit 1
	;;
	*) # Positional arguments
	if [[ -z "${IREE_ARTIFACT_ROOT+x}" ]]; then
	IREE_ARTIFACT_ROOT=$(readlink -f $1)
	else
	echo "Error: <artifact-directory> already set to ${IREE_ARTIFACT_ROOT}" >&2
	print_usage_and_exit
	fi
	shift
	;;
	esac
	done

	if [[ -z "${IREE_ARTIFACT_ROOT}" ]] \|\| [[ -z "${IREE_INPUT_MODULE_FILE}" ]] \|\| \
	[[ -z "${IREE_ENTRY_FUNCTION}" ]] \|\| [[ -z "${IREE_INPUT_BUFFER_FILE}" ]] \|\| \
	[[ -z "${IREE_DRIVER}" ]]; then
	echo "Error: missing necessary parameters" >&2
	print_usage_and_exit
	fi

	#################################
	# IREE Android app configurations
	#################################

	# The final Android APK name; default to "iree-run-module.apk".
	IREE_APK_NAME="${IREE_APK_NAME:-iree-run-module}"
	# The CMAKE build type for compiling IREE. default to Release.
	IREE_BUILD_TYPE="${IREE_BUILD_TYPE:-Release}"
	# The target Android API level; default to Android 10 (API level 29).
	IREE_ANDROID_API_LEVEL="${IREE_ANDROID_API_LEVEL:-29}"
	# The target Android platform ABI; default to arm64-v8a.
	IREE_ANDROID_ABI="${IREE_ANDROID_ABI:-arm64-v8a}"

	################################
	# Android SDK/NDK configurations
	################################

	# Android SDK root; must be provided as environment variable.
	# By default Android Studio uses
	# * $HOME/Android/Sdk for Linux.
	# * $HOME/Library/Android/sdk for macOS.
	# * $%LOCALAPPDATA%\Android\sdk for Windows.
	ANDROID_SDK_ROOT="${ANDROID_SDK_ROOT:?environment variable not set}"
	# Android NDK root; must be provided as environment variable.
	ANDROID_NDK_ROOT="${ANDROID_NDK_ROOT:?environment variable not set}"
	# Android SDK build tools version; must be provided as environment variable.
	ANDROID_SDK_BUILD_TOOLS_VERSION="${ANDROID_SDK_BUILD_TOOLS_VERSION?environment variable not set}"
	# Key store for signing apk files; default to Android debug keystore created
	# by Android Studio.
	ANDROID_KEYSTORE="${ANDROID_KEYSTORE:-${HOME}/.android/debug.keystore}"

	######################
	# IREE build toolchain
	######################

	CMAKE_BIN="${CMAKE_BIN:-$(which cmake)}"
	NINJA_BIN="${NINJA_BIN:-$(which ninja)}"
	CC_BIN="${CC_BIN:-$(which clang)}"
	CXX_BIN="${CXX_BIN:-$(which clang++)}"
	JAVAC_BIN="${JAVAC_BIN:-$(which javac)}"

	##################################
	# IREE source/artifact directories
	##################################

	# IREE project source root.
	IREE_SOURCE_ROOT="$(git rev-parse --show-toplevel)"
	# iree-run-module Android app source root.
	IREE_NATIVE_APP_SOURCE_ROOT="${IREE_SOURCE_ROOT?}/tools/android/run_module_app"

	# Directory for IREE native code intermediate intermediate artifacts.
	IREE_NATIVE_LIB_BUILD_DIR="${IREE_ARTIFACT_ROOT?}/iree/${IREE_BUILD_TYPE?}"
	# Directory for holding APK parts.
	IREE_APK_PARTS_DIR="${IREE_ARTIFACT_ROOT?}/parts"
	# Directory for IREE native libraries.
	IREE_NATIVE_LIB_DIR="${IREE_APK_PARTS_DIR?}/libs/lib/${IREE_ANDROID_ABI?}"
	# Directory for Android app assets.
	IREE_ASSET_DIR="${IREE_APK_PARTS_DIR?}/assets"
	# Directory for Android app R.class.
	IREE_RESOURCE_GEN_DIR="${IREE_APK_PARTS_DIR?}/rclass"

	#########################
	# Android build toolchain
	#########################

	ANDROID_SDK_BUILD_TOOLS_DIR="${ANDROID_SDK_ROOT?}/build-tools/${ANDROID_SDK_BUILD_TOOLS_VERSION?}"
	ANDROID_SDK_PLATFORMS_DIR="${ANDROID_SDK_ROOT?}/platforms/android-${IREE_ANDROID_API_LEVEL?}"

	AAPT_BIN="${ANDROID_SDK_BUILD_TOOLS_DIR?}/aapt"
	DX_BIN="${ANDROID_SDK_BUILD_TOOLS_DIR?}/dx"
	ZIPALIGN_BIN="${ANDROID_SDK_BUILD_TOOLS_DIR?}/zipalign"
	APKSIGNER_BIN="${ANDROID_SDK_BUILD_TOOLS_DIR?}/apksigner"

	AAPT_ADD="${AAPT_BIN?} add"
	# Link in the Android framework classes and disable compression for IREE
	# bytecode modules. This allows us to mmap the file directly.
	AAPT_PACK="${AAPT_BIN?} package -f -I ${ANDROID_SDK_PLATFORMS_DIR?}/android.jar -0 vmfb"
	DX="${DX_BIN?} --dex"
	ZIPALIGN="${ZIPALIGN_BIN?} -f -p 4"
	APKSIGN="${APKSIGNER_BIN?} sign"
	JAVAC="${JAVAC_BIN?} -classpath ${ANDROID_SDK_PLATFORMS_DIR?}/android.jar -sourcepath ${IREE_RESOURCE_GEN_DIR?} -d ${IREE_APK_PARTS_DIR?}"

	#############################
	# Build IREE native libraries
	#############################

	mkdir -p "${IREE_NATIVE_LIB_BUILD_DIR?}"

	echo ">>> Building IREE native libraries <<<"

	IREE_NATIVE_LIB_NAME=iree_tools_android_run_module_app_iree_run_module_app

	pushd "${IREE_NATIVE_LIB_BUILD_DIR?}"
	"${CMAKE_BIN?}" "${IREE_SOURCE_ROOT?}" -G Ninja \
	-DCMAKE_BUILD_TYPE="${IREE_BUILD_TYPE?}" \
	-DCMAKE_TOOLCHAIN_FILE="${ANDROID_NDK_ROOT?}/build/cmake/android.toolchain.cmake" \
	-DANDROID_ABI="${IREE_ANDROID_ABI?}" \
	-DANDROID_PLATFORM="android-${IREE_ANDROID_API_LEVEL?}" \
	-DIREE_HOST_C_COMPILER="${CC_BIN?}" \
	-DIREE_HOST_CXX_COMPILER="${CXX_BIN?}" \
	-DIREE_BUILD_COMPILER=OFF \
	-DIREE_BUILD_TESTS=OFF \
	-DIREE_BUILD_SAMPLES=OFF
	"${NINJA_BIN?}" "${IREE_NATIVE_LIB_NAME?}"
	popd

	#####################
	# Package Android app
	#####################

	# Clean artifacts from previous runs.
	rm -rf "${IREE_ARTIFACT_ROOT?}/${IREE_APK_NAME?}.apk" "${IREE_APK_PARTS_DIR?}"

	echo ">>> Generating AndroidManifest.xml <<<"

	# Create an AndroidManifest.xml with proper target SDK version.
	mkdir -p "${IREE_APK_PARTS_DIR?}"
	IREE_ANDROID_API_LEVEL="${IREE_ANDROID_API_LEVEL?}" envsubst \
	< "${IREE_NATIVE_APP_SOURCE_ROOT?}/AndroidManifest.xml.template" \
	> "${IREE_APK_PARTS_DIR?}/AndroidManifest.xml"

	echo ">>> Preparing shared libraries and vm module information <<<"

	# Find the compiled iree_run_module_app shared library and symlink it to a
	# known location for packaging.
	mkdir -p "${IREE_NATIVE_LIB_DIR?}"
	IREE_NATIVE_LIB=$(find ${IREE_NATIVE_LIB_BUILD_DIR?} -name "lib${IREE_NATIVE_LIB_NAME?}.so")
	# Note: the target link name must match with
	# run_module_app/AndroidManifest.xml.template.
	ln -sf "${IREE_NATIVE_LIB?}" "${IREE_NATIVE_LIB_DIR?}/libiree_run_module_app.so"

	# Copy the VM FlatBuffer and iree-run-module invocation related information
	# over as assets.
	mkdir -p "${IREE_ASSET_DIR?}"
	# Note: the following files must match with run_module_app/src/main.cc.
	cp "${IREE_INPUT_MODULE_FILE?}" "${IREE_ASSET_DIR?}/module.vmfb"
	cp "${IREE_INPUT_BUFFER_FILE?}" "${IREE_ASSET_DIR?}/inputs.txt"
	echo -n "${IREE_ENTRY_FUNCTION?}" > "${IREE_ASSET_DIR?}/entry_function.txt"
	echo -n "${IREE_DRIVER?}" > "${IREE_ASSET_DIR?}/driver.txt"

	echo ">>> Compiling app resources <<<"

	# Generate the R.java for resources.
	mkdir -p "${IREE_RESOURCE_GEN_DIR?}"
	${AAPT_PACK?} --non-constant-id -m \
	-M "${IREE_APK_PARTS_DIR?}/AndroidManifest.xml" \
	-S "${IREE_NATIVE_APP_SOURCE_ROOT?}/res" \
	-J "${IREE_RESOURCE_GEN_DIR?}" \
	--generate-dependencies

	# Compile the R.java and create classes.dex out of it for Android.
	echo "Using javac: '${JAVAC_BIN?}'"
	${JAVAC?} "${IREE_RESOURCE_GEN_DIR?}"/com/google/iree/run_module/*.java
	${DX?} --output="${IREE_APK_PARTS_DIR?}/classes.dex" "${IREE_APK_PARTS_DIR?}"

	echo ">>> Packaging apk file <<<"

	# Package assets and shared libraries into an apk file.
	${AAPT_PACK?} -m \
	-M "${IREE_APK_PARTS_DIR?}/AndroidManifest.xml" \
	-S "${IREE_NATIVE_APP_SOURCE_ROOT?}/res" \
	-A "${IREE_APK_PARTS_DIR?}/assets" \
	-F "${IREE_APK_PARTS_DIR?}/${IREE_APK_NAME?}.unaligned.apk" \
	--shared-lib "${IREE_APK_PARTS_DIR?}/libs"

	pushd "${IREE_APK_PARTS_DIR?}"
	# Also package the resources into the apk file.
	${AAPT_ADD?} "${IREE_APK_NAME?}.unaligned.apk" classes.dex
	echo ">>> Aligning apk file <<<"
	${ZIPALIGN?} "${IREE_APK_NAME?}.unaligned.apk" "${IREE_APK_NAME?}.apk"
	echo ">>> Signing apk file <<<"
	echo "NOTE: if you are using the Android Studio's debug keystore, the password is 'android'."
	${APKSIGN?} --ks "${ANDROID_KEYSTORE?}" --min-sdk-version 28 "${IREE_APK_NAME?}.apk"
	mv "${IREE_APK_NAME?}.apk" "${IREE_ARTIFACT_ROOT?}"
	popd

	echo ">>> Done: '${IREE_ARTIFACT_ROOT?}/${IREE_APK_NAME?}.apk' <<<"