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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1. LOCAL_MODULE_TAGS := user eng optional test  

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 foreng .

·         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.