Suppress R8 warnings for support library annotations

Most of these annotations are stripped at dex compile-time, and are not
necessarily present in the generated dex library's classpath. As the
classpath is used to inform R8 about `libraryjars`, this can cause
reference failures during R8 execution when warnings are enabled.

For now, suppress the reference warnings. Unrecognized runtime-visible
annotations will still be kept, and this should unblock efforts to
re-enable R8 warnings for many platform targets. A proper solution will
be to ensure the appropriate annotation libs are fed as `-libraryjars`
to R8.

Bug: 242088131
Test: m + `optimize { ignore_warnings: false }`
Change-Id: Ie92db2a9725ff520b311c6b66a50feae79463925
1 file changed
tree: c52abc479cc2d16b53493c7a3278c3af16a78b68
  1. common/
  2. core/
  3. packaging/
  4. target/
  5. tests/
  6. tools/
  7. .gitignore
  8. banchanHelp.sh
  9. buildspec.mk.default
  10. Changes.md
  11. CleanSpec.mk
  12. Deprecation.md
  13. envsetup.sh
  14. finalize_branch_for_release.sh
  15. help.sh
  16. METADATA
  17. navbar.md
  18. OWNERS
  19. PREUPLOAD.cfg
  20. rbesetup.sh
  21. README.md
  22. tapasHelp.sh
  23. 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For an outdated reference on Android.mk files, see build-system.html.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.