Reland: Add NEED_AIDL_NDK_PLATFORM_BACKEND

The config variable is used to force the generation of the AIDL
ndk_platform backend which will eventually be removed in favor of the
ndk backend. The switch is needed as an escape hatch for some devices
whose BSP (outsourced and thus hardly modifiable) depends on the
ndk_backend libraries.

Bug: 161456198
Test: m

Merged-In: Iba8633263ae649af783e94b01f5c1b5c6e042948
Change-Id: I8b73a6a1e5169c35daf333316857b3c3b110a0f7
3 files changed
tree: d0dedfd50df27f3111b1bb8f1392c181e4d4620f
  1. common/
  2. core/
  3. packaging/
  4. target/
  5. tests/
  6. tools/
  7. .gitignore
  8. Android.bp
  9. banchanHelp.sh
  10. buildspec.mk.default
  11. Changes.md
  12. CleanSpec.mk
  13. Deprecation.md
  14. envsetup.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For an outdated reference on Android.mk files, see build-system.html.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.