[automerger skipped] Update Security String to 2021-05-01 am: 6f23fe1713 am: 74a0816d49 am: 7a1fd130d1 am: d932897da4 -s ours am: 3361774ae8 -s ours

am skip reason: skip tag Change-Id Ica626a3b19e5b642807234c288428cd7e0f40f98 with SHA-1 321db2f846 is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/build/+/13919906

Change-Id: I87e45936b2eee813be228275341ce4b06eb471f8
tree: 7ba8dff529b1952258547d315fe38b7f3463a753
  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For an outdated reference on Android.mk files, see build-system.html.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.