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Cole Faust c874c70f45 Add extra variables to soong.variables 
Also always use BUILD_NUMBER_FROM_FILE in the BUILD_FINGERPRINT.
The build number file now always exists, even if HAS_BUILD_NUMBER is
false.

Bug: 297269187
Test: m bazel_sandwich
Change-Id: Idf745b600b167e5cec161e07139be09a037bdc13
2023-09-27 13:44:56 -07:00
common Fix BOARD_SYSTEMSDK_VERSIONS checks 2021-11-10 00:34:17 +00:00
core Add extra variables to soong.variables 2023-09-27 13:44:56 -07:00
packaging Trace time spent in cp rules for dist targets. 2023-06-26 23:31:30 +00:00
target Merge "emulator_arm64: Revert TARGET_NO_KERNEL to emulator default" into main 2023-09-22 23:07:26 +00:00
tests Add test for b failing 2023-07-05 12:26:55 -07:00
tools Merge "printflags: introduce device tool to print feature flags" into main 2023-09-25 06:51:18 +00:00
.gitignore ignore .iml files (IntelliJ) 2022-06-17 12:17:53 -04:00
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 Mention LOCAL_POST_INSTALL_CMD when talking about BUILD_BROKEN_INCORRECT_PARTITION_IMAGES 2023-09-12 16:54:19 -07:00
CleanSpec.mk Cleanspec to remove tools/metalava subdir 2023-09-15 14:09:09 -04:00
cogsetup.sh Add cog setup scripts 2023-09-14 17:11:45 +00:00
Deprecation.md Obsolete unused module types 2020-04-18 21:00:18 -07:00
envsetup.sh Add cog setup scripts 2023-09-14 17:11:45 +00:00
help.sh Add sync to m help 2022-09-22 02:26:10 +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 Remove OWNERS access for non-build team people to core build system 2023-02-28 10:52:10 -08:00
PREUPLOAD.cfg Disallow use of error-prone merge-strategies 2021-02-23 15:07:02 +00:00
rbesetup.sh Update rbesetup.sh script to no longer set certain env variables 2022-05-27 11:31:45 -04:00
README.md Mark envsetup.sh vars as deprecated in makefiles 2017-11-28 14:19:50 -08:00
shell_utils.sh Pull common methods into shell_utils.sh, which can be included by scripts. 2023-01-03 14:12:43 -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.