Add gsi_common.mk

gsi_common.mk is a new makefile file for GSI build targets.
It inherited the content from Mainline by mainline_system.mk.
Also it include other default GSI settings and try to covered
all contents from aosp_base_telephony.mk

It will be used to replace the treble_common*.mk. All
aosp_$arch*.mk will become to inherit from gsi_common.mk.

This patch also contains a new build target gsi_arm64,
which is used to test the gsi_common.mk purely.

Bug: 119747870
Test: compare the out system folder between gsi_arm64 and aosp_arm64
Test: also the gsi_arm64-userdebuge can boot on a Pixel device
Change-Id: I9a013f9407e0fe06b45011e36d5169b94f67148d
4 files changed
tree: 7016a8139749b16825aa26554caa1e13319c1694
  1. common/
  2. core/
  3. packaging/
  4. target/
  5. tests/
  6. tools/
  7. .gitignore
  8. buildspec.mk.default
  9. Changes.md
  10. CleanSpec.mk
  11. envsetup.sh
  12. help.sh
  13. navbar.md
  14. OWNERS
  15. README.md
  16. tapasHelp.sh
  17. Usage.txt
README.md

Android Make Build System

This is the Makefile-based portion of the Android Build System.

For documentation on how to run a build, see Usage.txt

For a list of behavioral changes useful for Android.mk writers see Changes.md

For an outdated reference on Android.mk files, see build-system.html. Our Android.mk files look similar, but are entirely different from the Android.mk files used by the NDK build system. When searching for documentation elsewhere, ensure that it is for the platform build system -- most are not.

This Makefile-based system is in the process of being replaced with Soong, a new build system written in Go. During the transition, all of these makefiles are read by Kati, and generate a ninja file instead of being executed directly. That's combined with a ninja file read by Soong so that the build graph of the two systems can be combined and run as one.