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Kelvin Zhang 25d69c8bf5 Temporary hack for making T->S downgrade work 
Downgrade OTA was broken because generic_ramdisk was removed from boot
partition in android T. Neither does O6 have init_boot. O6 also doesn't
include generic ramdisk in vendor boot, so no way for otatools to locate
contents of generic ramdisk. As a hack, omit boot partition timestamp if
we can't find ramdisk.

Test: generate T->S downgrade OTA for O6
Bug: 231656318
Merged-In: I9f5359462332aadadc324348873a3a4b2b126068
Change-Id: I9f5359462332aadadc324348873a3a4b2b126068
2022-05-10 05:06:47 +00:00
common Fix BOARD_SYSTEMSDK_VERSIONS checks 2021-11-10 00:34:17 +00:00
core Merge "RESTRICT AUTOMERGE platform/build/make - Tiramisu is now REL" into tm-dev 2022-05-07 15:11:19 +00:00
orchestrator Implement multitree lunch 2022-04-08 13:42:55 -07:00
packaging Fix creating _dist_<goal> targets under !dist 2018-10-21 08:56:27 -07:00
target platform/build/make - T is now 33 #2 2022-04-28 15:18:03 -07:00
tests Merge "Correct abspath implementation" 2022-04-20 01:32:16 +00:00
tools Temporary hack for making T->S downgrade work 2022-05-10 05:06:47 +00:00
.gitignore Add build subprojects to .gitignore 2015-07-23 13:18:47 -07:00
banchanHelp.sh Allow selecting a different product in banchan. 2021-04-19 18:32:00 +01:00
buildspec.mk.default Add TARGET_PLATFORM_VERSION to lunch 2017-03-23 09:44:08 -07:00
Changes.md Fix Markdown formatting. 2022-03-09 14:51:51 +00:00
CleanSpec.mk Make SOONG_HOST_OUT an alias for HOST_OUT 2021-11-18 16:26:58 -08:00
Deprecation.md Obsolete unused module types 2020-04-18 21:00:18 -07:00
envsetup.sh Merge "revert addition of --skip-soong-test flag" am: 9bc50689c9 am: 3cbef527f0 am: def5eefbb7 2022-04-11 17:22:14 +00:00
finalize_branch_for_release.sh Start script to finalize branch release. 2022-04-19 23:47:08 +00:00
help.sh core & tools: system_dlkm: add dynamic partition 2022-01-30 08:43:08 +00:00
METADATA Move comment to license_note 2022-03-03 14:57:46 -08:00
navbar.md Mark envsetup.sh vars as deprecated in makefiles 2017-11-28 14:19:50 -08:00
OWNERS Refactor OWNERS files in platform/build/make. 2020-10-08 16:14:44 -07:00
PREUPLOAD.cfg Disallow use of error-prone merge-strategies 2021-02-23 15:07:02 +00:00
rbesetup.sh Add the ability to source RBE related scripts from envsetup.sh 2021-07-14 11:31:54 -04:00
README.md Mark envsetup.sh vars as deprecated in makefiles 2017-11-28 14:19:50 -08:00
tapasHelp.sh Add a keys argument to tapas 2022-02-07 18:50:22 +00:00
Usage.txt Remove the PRODUCT-* goal 2019-07-29 14:27:04 -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.