Android.bp与Android.mk

从AndroidO开始，Android开始使用Android.bp来管理代码的编译，Android通过soong和blueprint将Android.bp转换为ninja文件(保存在out/soong/build.ninja)，通过ckati将Android.mk转换为ninja文件(保存在out/buil-$(target).ninja)。然后将这两个ninja文件include到一个文件，最后使用ninja来编译。

Android.bp与Android.mk_第1张图片

在Android.bp中定义的模块在Android.mk中可以依赖，但是Android.bp中的模块不能依赖Android.mk中的模块。如果需要在Android.bp中依赖Android.mk中模块需要将依赖的Android.mk转换为Android.mk。简单的转换可以直接使用工具:out/soong/host/linux-x86/bin/androidmk。

例如需要将如下的Android.mk换换为Android.bp。

## Copyright (C) 2008 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.#LOCAL_PATH:= $(call my-dir)include $(CLEAR_VARS)LOCAL_MODULE_TAGS := optional# This is the target being built.LOCAL_PACKAGE_NAME := UpgradeExample# Only compile source java files in this apk.LOCAL_SRC_FILES := $(call all-java-files-under, src)# Link against the current Android SDK.LOCAL_SDK_VERSION := currentLOCAL_PROGUARD_ENABLED := disabledinclude $(BUILD_PACKAGE)

通过使用命令转换：androidmk Android.mk > Android.bp

// Copyright (C) 2008 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.//android_app {    // This is the target being built.    name: "UpgradeExample",    // Only compile source java files in this apk.    srcs: ["src/**/*.java"],    // Link against the current Android SDK.    sdk_version: "current",    optimize: {        enabled: false,    },}

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