其中 $(TARGET_OUT)表示预置到/system/目录
(1).预置apk的路径为/system/app/LOCAL_MODULE_PATH := $(TARGET_OUT_APPS)或LOCAL_MODULE_PATH := $(TARGET_OUT)/app或去掉LOCAL_PRIVILEGED_MODULE := true
(2).预置apk的路径为/system/priv-app/LOCAL_MODULE_PATH := $(TARGET_OUT)/priv-app或LOCAL_PRIVILEGED_MODULE := true
(3).预置apk的路径为/system/vendor/operator/appLOCAL_MODULE_PATH := $(TARGET_OUT)/vendor/operator/app
(4).预置apk的路径为/data/app/LOCAL_MODULE_PATH := $(TARGET_OUT_DATA_APPS)/

在可卸载清单列表添加对应的包名,白名单文件中加入需要卸载的apk的包名(5).out\target\product\版本号\system\app\vendor\mediatek\proprietary\frameworks\base\data\etc\pms_sysapp_removable_system_list.txt添加上应用包名
(6).out\target\product\版本号\vendor\appvendor\mediatek\proprietary\frameworks\base\data\etc\pms_sysapp_removable_vendor_list.txt添加上应用包名
有时候会因为内存分配的不够导致编译不过，可在device/mediateksample/对应版本/BoardConfig.mk设置扩大内存
白名单文件中加入需要卸载的apk的包名/vendor/mediatek/proprietary/frameworks/base/data/etc/pms_sysapp_removable_system_list.txt
8776    private PackageParser.Package addForInitLI(PackageParser.Package pkg,8777            @ParseFlags int parseFlags, @ScanFlags int scanFlags, long currentTime,8778            @Nullable UserHandle user)8779                    throws PackageManagerException {8780        final boolean scanSystemPartition = ((parseFlags & PackageParser.PARSE_IS_SYSTEM_DIR) != 0)8781                // M:operator app also is removable and not system flag8782                || sPmsExt.isRemovableSysApp(pkg.packageName) && pkg.codePath.contains("/system/") ;

LOCAL_CERTIFICATE := platform或LOCAL_CERTIFICATE := PRESIGNED
是否开启混淆LOCAL_PROGUARD_ENABLED := disabledLOCAL_MODULE_TAGS := optional
使用platform签名LOCAL_CERTIFICATE := platform
指定src目录LOCAL_SRC_FILES := $(call all-java-files-under, src)
指定res目录LOCAL_RESOURCE_DIR += $(LOCAL_PATH)/res
LOCAL_SRC_FILES变量必须包含将要打包的模块的C/C++/java源码LOCAL_SRC_FILES := $(call all-java-files-under, app/src/main/java)
编译AndriodManifest.xmlLOCAL_MANIFEST_FILE := app/src/main/AndroidManifest.xml
编译的系统资源文件LOCAL_RESOURCE_DIR := $(LOCAL_PATH)/app/src/main/res
编译asset资源文件，必须要单独写出来，不然在工程中无法访问到asset路径下的资源文件LOCAL_ASSET_DIR := $(LOCAL_PATH)/app/src/main/assets
#LOCAL_PRIVILEGED_MODULE := true对于Android系统应用LOCAL_PRIVILEGED_MODULE 决定了app在编译后，放在ROM分区中的app或者priv-app位置LOCAL_PRIVILEGED_MODULE := true#如果配置为false 则编译到设备中的路径为（system or product or vendor/app）#如果配置为true  则编译到设备中的路径为（system or product or vendor/priv-app)
#如果需要使用系统隐藏API编译,则需要定义:LOCAL_PRIVATE_PLATFORM_APIS := true
#如果不需要使用系统隐藏API编译，则需要定义：LOCAL_SDK_VERSION := current#注意，两个是 if --else 的定义原则，根据实际情况选择
编译apk文件，最后生成的文件路径一般放在/system/app目录下LOCAL_MODULE_CLASS := APPS
编译jar包   LOCAL_MODULE_CLASS := JAVA_LIBRAYIES
定义动态库文件,最后生成的文件路径放置在/sysem/lib目录下LOCAL_MODULE_CLASS := SHARED_LIBRAYIES
编译可执行文件,最后生成的文件路径放置放在system/bin下LOCAL_MODULE_CLASS := EXECUTABLES
编译配置文件,最后生成的文件路径放置在/system/etc/目录下LOCAL_MODULE_CLASS := ETC
#aapt是编译和打包资源的工具。而aapt2是在aapt上做了优化LOCAL_USE_AAPT2 := true
#指定依赖的共享java类库，这个是编译时依赖，最终不会打包到apk中LOCAL_JAVA_LIBRARIES := javax.obex telephony-common services.net    
混淆配置，默认为full obfuscation，全代码混淆，disabled不开启#不需要使用代码混淆的工具进行代码混淆LOCAL_PROGUARD_ENABLED := disabled 
#默认为使用将该工程代码全部混淆LOCAL_PROGUARD_ENABLE := full
指定编译目标为32位或64位LOCAL_MULTILIB := ###可选值/32/64/first/both
指定目标lib库的类型LOCAL_MODULE_TARGET_ARCH := ###可选值arm/arm x86/arm64
配置当前系统不支持的类型LOCAL_MODULE_UNSUPPORTED_TARGET_ARCH := ###可选值arm/arm x86/arm64

LOCAL_CERTIFICATE : #使用平台文件签名(1).platform签名： AndroidManifest.xml的manifest节点中添加　android:sharedUserId=”android.uid.system”， Android.mk中增加LOCAL_CERTIFICATE := platform 
(2).shared签名： AndroidManifest.xml的manifest节点中增加android:sharedUserId=”android.uid.shared”， Android.mk中增加LOCAL_CERTIFICATE := shared 
(3).media签名： AndroidManifest.xml的manifest节点中增加 android:sharedUserId=”android.media”， Android.mk中增加LOCAL_CERTIFICATE := media 

 一般有system  system_ext  product  vendor  odm  分区
#模块编译输出分区#system :主要包含Android框架，google官方实现    #Android.mk 默认就是输出到system分区，不用指定    #Android.bp 默认就是输出到system分区，不用指定
#system_ext: android11 新划分区
#vendor :SoC芯片商分区(系统级核心厂商，如高通), 为他们提供一些核心功能和服务，由soc实现    #Android.mk LOCAL_VENDOR_MODULE := true    #Android.bp vendor: true
#odm :设备制造商分区(如华为、小米)，为他们的传感器或外围设备提供一些核心功能和服务    #Android.mk LOCAL_ODM_MODULE := true    #Android.bp device_specific: true
#product :产品机型分区    #Android.mk LOCAL_PRODUCT_MODULE := true    #Android.bp product_specific
#安装到product分区    #Android.mk LOCAL_PRODUCT_MODULE := true

(1).–auto-add-overlay #当不同文件夹有相同的资源id时，只将第一个资源合并打包进来，(1).–extra-packages android.support.v7.appcompat #将extra-package包后边的文件包引入到当前代码框架中，就像给当前代码导入一个jar包，但是这里不限jar、library等等，这样引入编译之后就能合并在一起使用
LOCAL_AAPT_FLAGS := \--auto-add-overlay \--extra-packages com.airbnb.lottie  //lottie第三方aar的包名

第一步:先声明多个 jar 包的位置include $(CLEAR_VARS)LOCAL_PREBUILT_STATIC_JAVA_LIBRARIES := \  CloudHelper:/libs/CommonUtil.jar \  BaiduLBS:/libs/BaiduLBS_Android.jar \  logger:/libs/logger.jarinclude $(BUILD_MULTI_PREBUILT)
第二步:引用我们声明的多个jar包的变量LOCAL_STATIC_JAVA_LIBRARIES := \  CommonUtil \  BaiduLBS \  logger

include $(CLEAR_VARS)LOCAL_SRC_FILES_arm :=libs/armeabi-v7a/libBaiduMapSDK_base_v4_2_1.soLOCAL_SRC_FILES_arm64 :=libs/arm64-v8a/libBaiduMapSDK_base_v4_2_1.soLOCAL_MODULE_TARGET_ARCHS:= arm arm64include $(BUILD_PREBUILT)
include $(CLEAR_VARS)LOCAL_REQUIRED_MODULES := libBaiduMapSDK_base_v4_2_1LOCAL_JNI_SHARED_LIBRARIES := libBaiduMapSDK_base_v4_2_1include $(BUILD_PACKAGE)

include $(CLEAR_VARS)my_archs := arm arm64my_src_arch := $(call get-prebuilt-src-arch, $(my_archs))
LOCAL_PREBUILT_JNI_LIBS := \  lib/$(my_src_arch)/libXXX.so \  lib/$(my_src_arch)/libXXX.so
LOCAL_MODULE_TARGET_ARCH := $(my_src_arch)include $(BUILD_PACKAGE)

#lib/baidumap.mkinclude $(CLEAR_VARS)LOCAL_MODULE_TAGS := optionalLOCAL_MODULE_SUFFIX := .soLOCAL_MODULE := libBaiduMapSDK_map_v4_2_1LOCAL_MODULE_CLASS := SHARED_LIBRARIESLOCAL_SRC_FILES_arm :=libs/armeabi-v7a/libBaiduMapSDK_map_v4_2_1.soLOCAL_SRC_FILES_arm64 :=libs/arm64-v8a/libBaiduMapSDK_map_v4_2_1.soLOCAL_MODULE_TARGET_ARCHS:= arm arm64LOCAL_MULTILIB := bothinclude $(BUILD_PREBUILT)#Android.mk中添加include $(LOCAL_PATH)/lib/baidumap.mk

LOCAL_PREBUILT_JNI_LIBS = \  @lib/armeabi-v7a/libcryptox.so \  @lib/armeabi-v7a/libfb.so

LOCAL_PREBUILT_JNI_LIBS = \  lib/armeabi-v7a/libcryptox.so \  lib/armeabi-v7a/libfb.so

###清空临时变量JNI_LIBS JNI_LIBS :=###当前目录递归搜索$(foreach FILE,$(shell find $(LOCAL_PATH)/lib/ -name *.so), $(eval JNI_LIBS += $(FILE)))###获取搜索文件目录集（相对目录）LOCAL_PREBUILT_JNI_LIBS := $(subst $(LOCAL_PATH),,$(JNI_LIBS))

$(call all-java-files-under, $(LOCAL_PATH)) #获取指定目录下的所有 Java 文件。$(call all-c-files-under, $(LOCAL_PATH)) #获取指定目录下的所有 C 语言文件。$(call all-Iaidl-files-under, $(LOCAL_PATH)) #获取指定目录下的所有 AIDL 文件。$(call all-makefiles-under, $(LOCAL_PATH)) #获取指定目录下的所有 Make 文件

创建文件夹$(shell mkdir -p out/target/product/customer/system/***)
拷贝文件$(shell cp vendor/customer/thirdapp/your_assets/my.so out/target/product/customer/system/***)
拷贝文件夹$(shell cp vendor/customer/thirdapp/your_assets/* -r  out/target/product/customer/system/***)

$(shell mkdir $(TARGET_OUT)/vendor/operator/app/Facebook)$(shell cp $(LOCAL_PATH)/Facebook.apk $(TARGET_OUT)/vendor/operator/app/Facebook)

LOCAL_PATH:= $(call my-dir)include $(CLEAR_VARS)LOCAL_MODULE_TAGS := optionalLOCAL_SRC_FILES := $(call all-subdir-Java-files) \                src/com/gm/cn/XXX.aidlLOCAL_PACKAGE_NAME := Testinclude $(BUILD_PACKAGE) 

LOCAL_PATH := $(call my-dir)include $(CLEAR_VARS)
LOCAL_MODULE := TestLOCAL_SRC_FILES += libutils_test.cpp test_demo.cpp\                   libutilsbasic_test.cpp
LOCAL_SHARED_LIBRARIES += libutils libcutils libbase liblog LOCAL_SHARED_LIBRARIES += libhidlbaseLOCAL_SHARED_LIBRARIES += libbinder libion \                           libEGL libGLESv1_CM libGLESv2
LOCAL_C_INCLUDES += LOCAL_CFLAGS += -DLOG_TAG=\"test_demo\"LOCAL_VENDOR_MODULE := true 
include $(BUILD_EXECUTABLE)

LOCAL_PATH := $(call my-dir)include $(CLEAR_VARS)LOCAL_MODULE := TestLOCAL_MODULE_TAGS := optionalLOCAL_SRC_FILES := $(LOCAL_MODULE).apkLOCAL_MODULE_CLASS := APPSLOCAL_MODULE_SUFFIX := $(COMMON_ANDROID_PACKAGE_SUFFIX)LOCAL_CERTIFICATE := PRESIGNEDinclude $(BUILD_PREBUILT)

LOCAL_PATH := $(call my-dir)include $(CLEAR_VARS)LOCAL_MODULE := TestLOCAL_MODULE_TAGS := optionalLOCAL_SRC_FILES := $(LOCAL_MODULE).apkLOCAL_MODULE_CLASS := APPSLOCAL_MODULE_SUFFIX := $(COMMON_ANDROID_PACKAGE_SUFFIX)LOCAL_MODULE_PATH := $(TARGET_OUT)/appLOCAL_CERTIFICATE := PRESIGNEDinclude $(BUILD_PREBUILT)

LOCAL_PATH := $(call my-dir)include $(CLEAR_VARS)LOCAL_MODULE := TestLOCAL_MODULE_TAGS := optionalLOCAL_SRC_FILES := $(LOCAL_MODULE).apkLOCAL_MODULE_CLASS := APPSLOCAL_MODULE_SUFFIX := $(COMMON_ANDROID_PACKAGE_SUFFIX)LOCAL_MODULE_PATH := $(TARGET_OUT_APPS)LOCAL_CERTIFICATE := PRESIGNEDinclude $(BUILD_PREBUILT)

LOCAL_PATH := $(call my-dir)include $(CLEAR_VARS)LOCAL_MODULE := TestLOCAL_MODULE_TAGS := optionalLOCAL_SRC_FILES := $(LOCAL_MODULE).apkLOCAL_MODULE_CLASS := APPSLOCAL_MODULE_SUFFIX := $(COMMON_ANDROID_PACKAGE_SUFFIX)LOCAL_PRIVILEGED_MODULE := trueLOCAL_CERTIFICATE := PRESIGNEDinclude $(BUILD_PREBUILT)

LOCAL_PATH := $(call my-dir)include $(CLEAR_VARS)LOCAL_MODULE := TestLOCAL_MODULE_TAGS := optionalLOCAL_SRC_FILES := $(LOCAL_MODULE).apkLOCAL_MODULE_CLASS := APPSLOCAL_MODULE_SUFFIX := $(COMMON_ANDROID_PACKAGE_SUFFIX)LOCAL_MODULE_PATH := $(TARGET_OUT)/priv-appLOCAL_CERTIFICATE := PRESIGNEDinclude $(BUILD_PREBUILT)

LOCAL_PATH := $(call my-dir)include $(CLEAR_VARS)LOCAL_MODULE := TestLOCAL_MODULE_TAGS := optionalLOCAL_SRC_FILES := $(LOCAL_MODULE).apkLOCAL_MODULE_CLASS := APPSLOCAL_MODULE_SUFFIX := $(COMMON_ANDROID_PACKAGE_SUFFIX)LOCAL_CERTIFICATE := PRESIGNEDLOCAL_MODULE_PATH := $(TARGET_OUT)/vendor/operator/appLOCAL_PROPRIETARY_MODULE := trueLOCAL_MODULE_OWNER := mtkinclude $(BUILD_PREBUILT)

LOCAL_PATH := $(call my-dir)include $(CLEAR_VARS)LOCAL_MODULE := TestLOCAL_MODULE_TAGS := optionalLOCAL_SRC_FILES := $(LOCAL_MODULE).apkLOCAL_MODULE_CLASS := APPSLOCAL_MODULE_SUFFIX := $(COMMON_ANDROID_PACKAGE_SUFFIX)#LOCAL_PRIVILEGED_MODULE := trueLOCAL_MODULE_PATH := $(TARGET_OUT_DATA_APPS)LOCAL_CERTIFICATE := PRESIGNEDinclude $(BUILD_PREBUILT)

frameworks/base/services/core/java/com/android/server/pm/PackageManagerService.java
--- a/services/core/java/com/android/server/pm/PackageManagerService.java+++ b/services/core/java/com/android/server/pm/PackageManagerService.java@@ -11394,6 +11394,10 @@                                     + " but expected at " + known.codePathString                                     + "; ignoring.");                         }                    } /*else {+                        throw new PackageManagerException(INSTALL_FAILED_INVALID_INSTALL_LOCATION,+                                "Application package " + pkg.packageName+                                + " not found; ignoring.");                     }*/                 }             }

Android 11(R)预装APP到data/app目录https://blog.csdn.net/zmlovelx/article/details/125664260

LOCAL_PATH := $(call my-dir)include $(CLEAR_VARS)LOCAL_MODULE := TestLOCAL_MODULE_TAGS := optionalLOCAL_SRC_FILES := $(LOCAL_MODULE).apkLOCAL_MODULE_CLASS := APPSLOCAL_VENDOR_MODULE := trueLOCAL_MODULE_SUFFIX := $(COMMON_ANDROID_PACKAGE_SUFFIX)LOCAL_CERTIFICATE := platforminclude $(BUILD_PREBUILT)

LOCAL_PATH := $(call my-dir)my_archs := arm arm64my_src_arch := $(call get-prebuilt-src-arch, $(my_archs))
include $(CLEAR_VARS)LOCAL_MODULE := TestLOCAL_MODULE_CLASS := APPSLOCAL_MODULE_TAGS := optionalLOCAL_BUILT_MODULE_STEM := package.apkLOCAL_MODULE_SUFFIX := $(COMMON_ANDROID_PACKAGE_SUFFIX)#LOCAL_PRIVILEGED_MODULE :=LOCAL_CERTIFICATE := PRESIGNED#LOCAL_OVERRIDES_PACKAGES :=LOCAL_SRC_FILES := $(LOCAL_MODULE).apk
LOCAL_PREBUILT_JNI_LIBS := \  lib/$(my_src_arch)/libXXX.so \  lib/$(my_src_arch)/libXXX.so
LOCAL_MODULE_TARGET_ARCH := $(my_src_arch)include $(BUILD_PREBUILT)

https://blog.csdn.net/u012514113/article/details/124384430

sdk/out/target/common/obj/JAVA_LIBRARIES/framework-minus-apex_intermediates/classes.jar
classes.jar修改为framework.jar
libs/framework.jar

allprojects {    repositories {        google()        jcenter()    }
    //add start    gradle.projectsEvaluated {        tasks.withType(JavaCompile) {            options.compilerArgs.add('-Xbootclasspath/p:app/libs/framework.jar')        }    }    //add end}
dependencies {    compileOnly files('libs/framework.jar')}