[automerger skipped] Update Security String to 2021-03-01 am: 0e3ba7d2f7 am: e1380bb1df am: f87e56ff8a am: 785b0ae02e -s ours

am skip reason: Change-Id I6d6542306c51ac1682f02cbce6701688d2bdbea2 with SHA-1 9c4665257c is in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/build/+/13318721

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I2fb64f180da87c5fb758b19deedd1fde68631dbd
tree: 13d6362961e7754231ec9ae0e11d5b3a3e468c91
  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. Deprecation.md
  12. envsetup.sh
  13. help.sh
  14. navbar.md
  15. OWNERS
  16. rbesetup.sh
  17. README.md
  18. tapasHelp.sh
  19. 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For an outdated reference on Android.mk files, see build-system.html.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.