Android.mk初识

 # # 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. # # 每个Android.mk文件必须以定义LOCAL_PATH为开始。它用于在开发tree中查找源文件。 # my-dir 则由Build System提供。返回包含Android.mk的目录路径。固定写法 LOCAL_PATH := $(call my-dir) # CLEAR_VARS 变量由Build System提供。并指向一个指定的GNU Makefile，负责清理多余的LOCAL_xxx. # 这个清理动作是必须的，因为所有的编译控制文件由同一个GNU Make解析和执行，其变量是全局的 # 所以清理后才能避免相互影响 比如LOCAL_MODULE, LOCAL_SRC_FILES, LOCAL_STATIC_LIBRARIES include $(CLEAR_VARS) # 定义引用的jar包：名字自定义，后面会针对名字进行路径说明 LOCAL_STATIC_JAVA_LIBRARIES := supportinternal supportannotions # 定义引用的aar包：名字自定义，后面会针对名字进行路径说明 # aar包内如果有jar包，需要导出引用比如V4包有jar包 LOCAL_STATIC_JAVA_AAR_LIBRARIES := support4 # 定义src文件路径 LOCAL_SRC_FILES := $(call all-subdir-Java-files) $(call all-java-files-under, src) $(call all-renderscript-files-under, src) # 定义res文件路径 LOCAL_RESOURCE_DIR := $(LOCAL_PATH)/res  # 定义打包后名称 LOCAL_PACKAGE_NAME := OpenthosLauncher # 定义生成的apk使用的key # platform 表示使用系统的key打包 LOCAL_CERTIFICATE := platform include $(BUILD_PACKAGE) include $(CLEAR_VARS) # 定义jar包 aar包的路径 :后面跟的是相对Android.mk文件的相对路径 LOCAL_PREBUILT_STATIC_JAVA_LIBRARIES := supportinternal:lib/support-annotations-22.2.1-sources.jar \                                         supportannmtions:lib/internal_impl-22.2.1.jar \                                         support4:lib/support-v4-22.2.1.aar \  include $(CLEAR_VARS)   # 因为aar包的存在，这个主要是用于合并AndroidManifest.xml 和res资源文件  LOCAL_AAPT_FLAG := \                     --auto-add-overlay \                     --extra-package android.support.v4 \                     --extra-package com.openthos.launcher.openthoslauncher  # 指明合并后的AndroidManifest.xml的路径 （一般不用指定）  LOCAL_MANIFEST_FILE := $(LOCAL_PATH)/AndroidManifest.xml  # 因引入jar包或aar包，须加上这句  include $(BUILD_MULTI_PREBUILT)  include $(call all-makefiles-under,$(LOCAL_PATH))