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Tianjie Xu e86d1bccc0 Preserve the monotonic property when subtracting 0 block 
The monotonic property of the range is lost after the recent change to
subtract 0th block from the file range. As a result, we read the block
in the wrong order when pull files from the raw image. This yields a
incorrect hash during validation.

Bug: 150334561
Test: run validate_target_file. unittests
Change-Id: Id4fedaaf273c42c8d21a4549fda4c9a45e22066a
(cherry picked from commit f02ececc7f)
 		2020-02-27 13:24:11 -08:00
common Define PRODUCT_PRODUCT_VNDK_VERSION automatically 2020-01-11 12:44:08 +00:00
core Merge "do not clear output kernel module directory" am: 733ad20963 am: d8d9a50090 am: 19c6758950 2020-02-21 01:39:25 +00:00
packaging Fix creating _dist_<goal> targets under !dist 2018-10-21 08:56:27 -07:00
target Merge "Remove OsuLogin app from system image" 2020-02-21 19:11:08 +00:00
tests Only set TARGET_PLATFORM version in lunch when explicitly requested 2017-05-01 14:26:40 -07:00
tools Preserve the monotonic property when subtracting 0 block 2020-02-27 13:24:11 -08:00
.gitignore Add build subprojects to .gitignore 2015-07-23 13:18:47 -07:00
Changes.md Mark (BUILD_|LOCAL_)COPY_HEADERS as [more] deprecated 2020-01-27 19:45:04 -08:00
CleanSpec.mk Remove PermissionController from base_system after moving into APEX. 2020-01-09 12:39:30 -08:00
Deprecation.md Mark the current BUILD_* warnings as errors by default 2020-02-19 18:11:18 -08:00
OWNERS Merge "Update OWNERS for version_defaults.mk with pscovanner & lubomir Bug: 141272605" into qt-dev am: 5d0a024d7b am: 479c9c549b 2019-10-16 11:30:32 -07:00
README.md Mark envsetup.sh vars as deprecated in makefiles 2017-11-28 14:19:50 -08:00
Usage.txt Remove the PRODUCT-* goal 2019-07-29 14:27:04 -07:00
buildspec.mk.default Add TARGET_PLATFORM_VERSION to lunch 2017-03-23 09:44:08 -07:00
envsetup.sh Add ASAN_SYMBOLIZER_PATH for SANITIZE_HOST=address builds. 2020-02-04 09:16:28 -08:00
help.sh Rename product_services to system_ext 2019-07-09 08:57:19 +00:00
navbar.md Mark envsetup.sh vars as deprecated in makefiles 2017-11-28 14:19:50 -08:00
tapasHelp.sh Remove armv5te 2018-01-08 15:26:16 -08:00

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For an outdated reference on Android.mk files, see build-system.html.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