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Justin Yun 571737e8fc Set BOARD_VNDK_VERSION=current as a default value 
For Android P or later launching devices, set BOARD_VNDK_VERSION to
"current" as a default value if the value is not defined yet.
"PRODUCT_USE_VNDK_OVERRIDE=false" can disable this feature.

Bug: 70480159
Bug: 62019611
Test: Unset BOARD_VNDK_VERSION
      Set PRODUCT_SHIPPING_API_LEVEL "28"
      - Check if BOARD_VNDK_VERSION is set to "current"
      Set PRODUCT_USE_VNDK_OVERRIDE to "false"
      - Check if BOARD_VNDK_VERSION is not defined

Change-Id: I8d37579e8c4ca1788705cbc8a42e8812e2b93a22
 		2017-12-21 08:15:19 +09:00
core Set BOARD_VNDK_VERSION=current as a default value 2017-12-21 08:15:19 +09:00
target Merge "emulator: disable location service" 2017-12-15 19:14:20 +00:00
tests Only set TARGET_PLATFORM version in lunch when explicitly requested 2017-05-03 02:47:59 +00:00
tools Merge "build_image: Factor out CheckHeadroom() and add tests." 2017-12-19 00:00:41 +00:00
.gitignore Add build subprojects to .gitignore 2015-07-23 13:18:47 -07:00
Android.mk Fix the build when using findleaves.py 2017-08-08 09:45:12 -07:00
Changes.md PRODUCT_COMPATIBILITY_MATRIX_LEVEL_OVERRIDE is deprecated. 2017-12-14 15:35:15 -08:00
CleanSpec.mk Define PLATFORM_VNDK_VERSION 2017-12-13 10:48:34 +09:00
OWNERS Add OWNERS in build/make 2017-06-21 16:09:56 -07:00
README.md Mark envsetup.sh vars as deprecated in makefiles 2017-11-28 14:19:50 -08:00
Usage.txt Mark envsetup.sh vars as deprecated in makefiles 2017-11-28 14:19:50 -08:00
buildspec.mk.default Add TARGET_PLATFORM_VERSION to lunch 2017-03-23 09:44:08 -07:00
envsetup.sh Get off my lawn forever! 2017-12-07 13:51:23 -08:00
help.sh Mark envsetup.sh vars as deprecated in makefiles 2017-11-28 14:19:50 -08:00
navbar.md Mark envsetup.sh vars as deprecated in makefiles 2017-11-28 14:19:50 -08:00
tapasHelp.sh Support 'tapas help' for more-detailed tapas help 2017-09-11 15:03:50 -07:00

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For an outdated reference on Android.mk files, see build-system.html.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.