Android源码编译选项eng、user、userdebug的区别

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Android源码编译选项eng、user、userdebug的区别

1、各选项简要说明

eng：debug版本

user:release版本

userDebug版本：部分debug版本

2、详细介绍

Android源码编译选项eng、user、userdebug是由Android.mk文件中的LOCAL_MODULE_TAGS配置项来决定的。其一般形式如下：

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各项具体说明如下：

1、user：只有在user版本时该模块才被编译进去；

2、eng：只有在eng版本时该模块才被编译进去；

3、test：只有在tests版本时该模块才被编译进去；

4、optional：在所有版本中都编译该模块进去。
其中的值可设置为1个或多个，分别对应编译选项的同一个或多个。

eng、user、userdebug的区别如下：

1、当make eng时，也即相当于make。此时BuildType为eng，那么其编译进去的内容包括：

·Intended for platform-level debugging

·Installs modules tagged with: eng, debug, user, and/or development

·Installs non-APK modules that have no tags specified

·Installs APKs according to the product definition files, in addition to taggedAPKs

·Sets ro.secure=1

·Sets ro.debuggable=0

·Sets ro.kernel.android.checkjni=1

·adbd is enabled by default

2、当make user时，此时BuildType为user,那么其编译进去的内容包括：

·Intended to be the final release

·Installs modules tagged as user

·Installs non-APK modules that have no tags specified

·Installs APKs according to the product definition files (tags are ignored forAPK modules)

·Sets ro.secure=1

·Sets ro.debuggable=0

·adbd is disabled by default

3、当make userdebug时，此时BuildType为userdebug,那么其编译进去的内容包括：

thesame as user, except:

·Intended for limited debugging

·Installs modules tagged with debug

·Sets ro.debuggable=1

·adbd is enabled by default

3、表格：

eng	This is the default flavor. A plain " make  " is the same as " make eng  ". droid  is an alias for eng  . · Installs modules tagged with:  eng  ,  debug  ,  user  , and/or  development . · Installs non-APK modules that have no tags specified. · Installs APKs according to the product definition files, in addition to tagged APKs. ·  ro.secure=0 ·  ro.debuggable=1 ·  ro.kernel.android.checkjni=1 ·  adb  is enabled by default.
user	" make user  " This is the flavor intended to be the final release bits. · Installs modules tagged with  user  . · Installs non-APK modules that have no tags specified. · Installs APKs according to the product definition files; tags are ignored for APK modules. ·  ro.secure=1 ·  ro.debuggable=0 ·  adb  is disabled by default.
userdebug	" make userdebug  " The same as  user  , except: · Also installs modules tagged with  debug  . ·  ro.debuggable=1 ·  adb  is enabled by default.