Android源碼編譯選項eng、user、userdebug的區別

Android源碼編譯選項eng、user、userdebug的區別

1、各選項簡要說明

eng：debug版本

user:release版本

userDebug版本：部分debug版本

2、詳細介紹

Android源碼編譯選項eng、user、userdebug是由Android.mk文件中的LOCAL_MODULE_TAGS配置項來決定的。其一般形式如下：

LOCAL_MODULE_TAGS := user eng optional test

各項具體說明如下：

1、user：只有在user版本時該模塊才被編譯進去；

2、eng：只有在eng版本時該模塊才被編譯進去；

3、test：只有在tests版本時該模塊才被編譯進去；

4、optional：在所有版本中都編譯該模塊進去。

其中的值可設置為1個或多個，分別對應編譯選項的同一個或多個。

eng、user、userdebug的區別如下：

1、當make eng時，也即相當於make。此時BuildType為eng，那麼其編譯進去的內容包括：

·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、當make user時，此時BuildType為user,那麼其編譯進去的內容包括：

·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、當make userdebug時，此時BuildType為userdebug,那麼其編譯進去的內容包括：

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.