android编译系统的makefile文件Android.mk写法如下 - MrWu94/AndroidNote GitHub Wiki

(1)Android.mk文件首先需要指定LOCAL_PATH变量，用于查找源文件。由于一般情况下

Android.mk和需要编译的源文件在同一目录下，所以定义成如下形式：

LOCAL_PATH:=$(call my-dir)

上面的语句的意思是将LOCAL_PATH变量定义成本文件所在目录路径。

(2)Android.mk中可以定义多个编译模块，每个编译模块都是以include $(CLEAR_VARS)开始

以include $(BUILD_XXX)结束。

include $(CLEAR_VARS)

CLEAR_VARS由编译系统提供，指定让GNU MAKEFILE为你清除除LOCAL_PATH以外的所有LOCAL_XXX变量，

如LOCAL_MODULE，LOCAL_SRC_FILES，LOCAL_SHARED_LIBRARIES，LOCAL_STATIC_LIBRARIES等。

include $(BUILD_STATIC_LIBRARY)表示编译成静态库

include $(BUILD_SHARED_LIBRARY)表示编译成动态库。

include $(BUILD_EXECUTABLE)表示编译成可执行程序

(3) 举例

LOCAL_PATH:= $(call my-dir)
include $(CLEAR_VARS)
LOCAL_JAVA_LIBRARIES := telephony-common
LOCAL_MODULE_TAGS := optional

LOCAL_SRC_FILES := $(call all-java-files-under, src)

LOCAL_PACKAGE_NAME := GreeSecurity
LOCAL_CERTIFICATE := platform
LOCAL_PRIVILEGED_MODULE := true

LOCAL_STATIC_JAVA_LIBRARIES := tms 
#telephony-common
#telephony-common android-common
# ims-common telephony-common
#LOCAL_SDK_VERSION := current
LOCAL_PROGUARD_ENABLED := disabled
#LOCAL_PROGUARD_FLAG_FILES := proguard.flags
#LOCAL_PROGUARD_FLAGS := -include $(LOCAL_PATH)/proguard.flags

LOCAL_RESOURCE_DIR := \
    $(LOCAL_PATH)/res
    
include frameworks/base/packages/GuiCommon/common.mk

include frameworks/opt/greeCommonWidget/common.mk

include $(BUILD_PACKAGE)

include $(CLEAR_VARS) 

LOCAL_PREBUILT_STATIC_JAVA_LIBRARIES := tms:libs/tms.jar 
										
include $(BUILD_MULTI_PREBUILT) 


include $(call all-makefiles-under,$(LOCAL_PATH))

(4)编译一个应用程序(APK)

  LOCAL_PATH := $(call my-dir)
  include $(CLEAR_VARS)
   
  # Build all java files in the java subdirectory-->直译（建立在java子目录中的所有Java文件）
  LOCAL_SRC_FILES := $(call all-subdir-java-files)
   
  # Name of the APK to build-->直译（创建APK的名称）
  LOCAL_PACKAGE_NAME := LocalPackage
   
  # Tell it to build an APK-->直译（告诉它来建立一个APK）
  include $(BUILD_PACKAGE)

(5)编译一个依赖于静态Java库(static.jar)的应用程序

  LOCAL_PATH := $(call my-dir)
  include $(CLEAR_VARS)
   
  # List of static libraries to include in the package
  LOCAL_STATIC_JAVA_LIBRARIES := static-library
   
  # Build all java files in the java subdirectory
  LOCAL_SRC_FILES := $(call all-subdir-java-files)
   
  # Name of the APK to build
  LOCAL_PACKAGE_NAME := LocalPackage
   
  # Tell it to build an APK
  include $(BUILD_PACKAGE)

(6)编译一个需要用平台的key签名的应用程序

  LOCAL_PATH := $(call my-dir)
  include $(CLEAR_VARS)
   
  # Build all java files in the java subdirectory
  LOCAL_SRC_FILES := $(call all-subdir-java-files)
   
  # Name of the APK to build
  LOCAL_PACKAGE_NAME := LocalPackage
   
  LOCAL_CERTIFICATE := platform
   
  # Tell it to build an APK
  include $(BUILD_PACKAGE)

(7)编译一个需要用特定key前面的应用程序

  LOCAL_PATH := $(call my-dir)
  include $(CLEAR_VARS)
   
  # Build all java files in the java subdirectory
  LOCAL_SRC_FILES := $(call all-subdir-java-files)
   
  # Name of the APK to build
  LOCAL_PACKAGE_NAME := LocalPackage
   
  LOCAL_CERTIFICATE := vendor/example/certs/app
   
  # Tell it to build an APK
  include $(BUILD_PACKAGE)

(8)添加一个预编译应用程序

  LOCAL_PATH := $(call my-dir)
  include $(CLEAR_VARS)
   
  # Module name should match apk name to be installed.
  LOCAL_MODULE := LocalModuleName
  LOCAL_SRC_FILES := $(LOCAL_MODULE).apk
  LOCAL_MODULE_CLASS := APPS
  LOCAL_MODULE_SUFFIX := $(COMMON_ANDROID_PACKAGE_SUFFIX)
   
  include $(BUILD_PREBUILT)

(9)添加一个静态JAVA库

  LOCAL_PATH := $(call my-dir)
  include $(CLEAR_VARS)
   
  # Build all java files in the java subdirectory
  LOCAL_SRC_FILES := $(call all-subdir-java-files)
   
  # Any libraries that this library depends on
  LOCAL_JAVA_LIBRARIES := android.test.runner
   
  # The name of the jar file to create
  LOCAL_MODULE := sample
   
  # Build a static jar file.
  include $(BUILD_STATIC_JAVA_LIBRARY)

(10)添加jar

xsocket jackson-mapper logging jackson-core javatar log4j这几个只是名字，可以随便取。LOCAL_PREBUILT_STATIC_JAVA_LIBRARIES后面才是真正其作用的地方。如：

xsocket:lib/xSocket-2.8.14.jar 引用的是lib目录中的xSocket-2.8.14.jar。

还要注意的是 := 不要写成了+=了哦。

(11)资源文件是单独由AAPT编译的，而基本做法是把所有引用到的Jar包里的R.java合成一个R.java，再放入一些需要引用的路径下

LOCAL_RESOURCE_DIR := \
    $(LOCAL_PATH)/res
    

LOCAL_AAPT_FLAGS := --auto-add-overlay --extra-packages android.support.xxxx --extra-packages android.support.xxxx这一句的意思是说在out生成的包里面形成一个/src/android/support/xxxx的路径，把R.java放进去，这样代码里import android.support.xxxx.R就能找得到了。

(12)添加aidl

LOCAL_SRC_FILES :=$(call all-java-files-under, src) \
				src/com/xxx/xxx/xxx.aidl

(13)添加jni

LOCAL_JNI_SHARED_LIBRARIES := libupdate 
include $(call all-makefiles-under,$(LOCAL_PATH))  
LOCAL_JNI_SHARED_LIBRARIES := libupdate 就是把so文件放到apk文件里的libs/armeabi里

Project目录下创建jni文件夹,在jni文件里创建Android.mk,内容如下:

LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)
LOCAL_MODULE    := libupdate
LOCAL_MODULE_TAGS := optional
LOCAL_C_INCLUDES := $(LOCAL_PATH)
LOCAL_SRC_FILES := com_xxx_xxx_util_PatchUpdate.c
LOCAL_SHARED_LIBRARIES := libz
LOCAL_LDLIBS := -lz -llog
include $(BUILD_SHARED_LIBRARY)