How to config languages when build BSP

All supported languages can be found and verified under <AndroidSourceRoot>/framework/base/core/res/res,   for example:

     values-ar, values-ar-rEG, values-ar-rIL....,    ar, ar-rEG, ar-rIL is the location code.

 

create your own language setting's mk file or modify one example mk file under  <AndroidSourceRoot>/build/target/products, for example:

    languages_full.mk

 

config product mk file to use the language setting mk file, for example

    PRODUCT_LOCALES += en_US
    $(call inherit-product, build/target/product/languages_mysetting.mk)