Merge "Update BRANCH_DEFAULT_MODULE_BUILD_FROM_SOURCE documentation" into main am: 5b99bc00a0 am: e0b7bb7ebb

Original change: https://android-review.googlesource.com/c/platform/build/+/3077369

Change-Id: I536799206b4c97c6676da450bec5ad8513629013
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
tree: 5022dedd40416fe103fc486683c9a74a33198b4d
  1. ci/
  2. common/
  3. core/
  4. packaging/
  5. target/
  6. teams/
  7. tests/
  8. tools/
  9. .gitignore
  10. Android.bp
  11. banchanHelp.sh
  12. buildspec.mk.default
  13. Changes.md
  14. CleanSpec.mk
  15. cogsetup.sh
  16. Deprecation.md
  17. envsetup.sh
  18. help.sh
  19. METADATA
  20. navbar.md
  21. OWNERS
  22. PREUPLOAD.cfg
  23. rbesetup.sh
  24. README.md
  25. shell_utils.sh
  26. tapasHelp.sh
  27. 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For an outdated reference on Android.mk files, see build-system.html.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.