google-mobile-services/README.md

vendor_gms

Basic usage

• If you just wanna use this repository, then you just need to include products/gms.mk
• This is as simple as: $(call inherit-product-if-exists, vendor/gms/products/gms.mk)

Advanced usage

Initial setup

• Install xmlstarlet
  • sudo apt install xmlstarlet, sudo pacman -S xmlstarlet, etc. depending on your distribution.
• Install apktool, make sure its available in PATH
  • https://ibotpeaches.github.io/Apktool/install/
  • Run apktool if framework-res.apk to install framework for apktool this is necessary for proper extracting (generally found in /system/framework/)

Extracting / updating extracted overlays

Basically the same as regular extract-files

./extract-files.sh /path/to/a/dump

Removing certain overlays

• If certain overlays are not required, you can simply add them to exclude-tag.txt, those will be removed from the extracted overlays.

Miscellaneous information

• The main changes here are the addition of apktool and xmlstarlet, to allow us to extract the necessary overlays from some RROs.
• Since the process does take a while, to speed it up, all extraction is done in the background. This might not be suitable for weaker systems if there is a very high number of overlays to be extracted.