Add HOST_PREFER_32_BIT to Soong Config and move art-tools to product configuration.

This change accomplishes two things:

Adds `HOST_PREFER_32_BIT` to Soong config variables:
The `HOST_PREFER_32_BIT` environment variable is frequently used in
Android.mk files within the art/ directory. By adding it to
soong_config_variable, we make it accessible to the Soong build system,
which will be essential when converting art modules to Android.bp.

Moves `art-tools` to product configuration:
Originally, `art-tools` was a phony target added to
PRODUCT_HOST_PACKAGES. This approach is incorrect because
PRODUCT_HOST_PACKAGES should only contain actual modules, not phony
targets. We are addressing this by converting the dependencies and
conditional statements (ifeq) within `art-tools` into
PRODUCT_HOST_PACKAGES entries in base_system.mk.

Bug: 346702835
Test: m -j; Then, check related dependencies build in the system.
Change-Id: Iab252dea71c9df9d75f2701b33d3cd4d391e7f5d
2 files changed
tree: db3a7fa150cd0fa41cf4fa036e5a699bb8184cf1
  1. ci/
  2. common/
  3. core/
  4. packaging/
  5. target/
  6. teams/
  7. tests/
  8. tools/
  9. .gitignore
  10. Android.bp
  11. banchanHelp.sh
  12. buildspec.mk.default
  13. Changes.md
  14. CleanSpec.mk
  15. cogsetup.sh
  16. Deprecation.md
  17. envsetup.sh
  18. help.sh
  19. navbar.md
  20. OWNERS
  21. PREUPLOAD.cfg
  22. rbesetup.sh
  23. README.md
  24. shell_utils.sh
  25. tapasHelp.sh
  26. 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For an outdated reference on Android.mk files, see build-system.html.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.