Android Makefile 文件浅析(一)

最新推荐文章于 2021-06-25 16:41:45 发布

转载最新推荐文章于 2021-06-25 16:41:45 发布 · 449 阅读

android 专栏收录该内容

9 篇文章

订阅专栏

本文详细介绍了Android.mk文件的配置方法，包括指定LOCAL_PATH变量、定义编译模块、编译不同类型的库及应用程序，并展示了如何使用特定标记控制编译条件。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

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，宏函数“my-dir”由编译系统提供的，用于返回当前路径。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。

3、include $(CLEAR_VARS)
CLEAR_VARS由编译系统提供，指定让GNUMAKEFILE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

4、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

user: 指该模块只在user版本下才编译

eng: 指该模块只在eng版本下才编译

tests: 指该模块只在tests版本下才编译

optional:指该模块在所有版本下都编译

LOCAL_MODULE_TAGS:= optional

LOCAL_MODULE_TAGS ：=user eng tests optional

5、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
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、编译静态库

#清除java环境变量

include$(CLEAR_VARS)

LOCAL_MODULE_TAGS:= user

#添加aidl文件

LOCAL_SRC_FILES+= src/net/sunniwell/download/aidl/IDownload.aidl

# SDK 版本

LOCAL_SDK_VERSION:= current

#jar包的名字

LOCAL_MODULE:=DownLoadServerapi

#编译 DownLoadServerapi jar包

include $(BUILD_STATIC_JAVA_LIBRARY)

7、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 := DownLoadServerapi 第三方jar包

# 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)

8、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)

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)