LOCAL_MODULE_TAGS 选项说明

LOCAL_MODULE_TAGS ：=user eng tests optional

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

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.

Build flavors/types

When building for a particular product, it's often useful to have minor variations on what is ultimately the final release build. These are the currently-defined "flavors" or "types" (we need to settle on a real name for these).

eng	This is the default flavor. A plain "[code]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	"[code]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	"[code]make userdebug " The same as user , except: Also installs modules tagged with debug . ro.debuggable=1 adb is enabled by default.

If you build one flavor and then want to build another, you should run "

make installclean

" between the two makes to guarantee that you don't pick up files installed by the previous flavor. "

make clean

" will also suffice, but it
takes a lot longer.