Disable dexpreopt on targets that do not include default ART config.

Dexpreopt build commands should only be generated on targets that
include build/make/target/product/runtime_libart.mk, which sets the
necessary variables such as PRODUCT_SYSTEM_DEFAULT_PROPERTIES that
contain default values passed to dex2oat. This file also sets a
variable PRODUCT_USES_DEFAULT_ART_CONFIG that is used in
build/make/core/dex_preopt.mk to decide if boot images should be
installed.

On some targets build/make/target/product/runtime_libart.mk is not
included. Prior to this patch, on such targets invalid dexpreopt
commands were generated, but not used, so they did not cause any
visible build failures. The invalid commands can be grepped as:

  lunch qemu_trusty_arm64-userdebug && m nothing \
    && fgrep -e '-Xms ' $ANDROID_BUILD_TOP/out/soong/build.ninja

In this case '-Xms ' is an ill-formed option passed to dex2oat (the
option expects one argument, but none is passed).

This patch makes the DisablePreopt variable passed from make to
soong more strict: it not only requires WITH_DEXPREOPT, but also
PRODUCT_USES_DEFAULT_ART_CONFIG. This means that dexpreopt commands
will not be generated on targets that do not include
build/make/target/product/runtime_libart.mk.

Test: lunch aosp_walleye-userdebug && m \
    && find $ANDROID_BUILD_TOP/out -name 'boot.art'
    # expect to find files in /out/target/product/walleye/system/framework/$ARCH/

Test: lunch qemu_trusty_arm64-userdebug && m \
    && fgrep -e '-Xms ' $ANDROID_BUILD_TOP/out/soong/build.ninja
    # expect empty output

Change-Id: I3d765ed0dd8b38236b8bdd5c6202bb1d3f45f904
1 file changed
tree: 0197a028c5894ba95ea7d80435b4dccfbc97954e
  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. README.md
  17. tapasHelp.sh
  18. 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For an outdated reference on Android.mk files, see build-system.html.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.