Integrate Starlark-based configuration runner

If RBC_PRODUCT_CONFIG variable is set, obtain product configuration
variables by converting product configuration makefiles to Starlark
files and then executing them.
Also, introduce RBC_NO_PRODUCT_GRAPH variable to suppress product graph
generation. We cannot generate product graph with Starlark, so this
option allows to verify that the rest of the contents of the generated
Ninja files remains the same when Starlark-based converter is used.
This allows to perform the regression testing, i.e. running
`RBC_NO_PRODUCT_GRAPH=t DISABLE_ARTIFACT_PATH_REQUIREMENTS=t m nothing`
and
`RBC_PRODUCT_CONFIG=t m nothing`
should generate identical *.ninja files.

Bug: 181797530
Test: Manual
Change-Id: Ic6173a9640f32766b71c02a2b1833ce7a278e4cc
3 files changed
tree: 4893398de70fae20b51efe47228543946cfafacb
  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For an outdated reference on Android.mk files, see build-system.html.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.