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Colin Cross c27d795b63 Use unzip -DD 
We put reproducible timestamps in zip files so that the artifacts
are consistent, but that leads to old timestamps in the output
directory if they are unzipped as part of the build.  Use
unzip -DD when unzipping to update the timestamps.

Bug: 161015009
Test: touch -d 2020-01-01 ref; find $OUT/system -not -newer ref
Change-Id: I6f08ba8695d90a8225cfc04e679755e6296deed0
 		2020-07-12 05:38:03 +00:00
common strings.mk: Allow empty RHS values for inputs of collapse-pairs 2020-04-02 03:34:49 +09:00
core Use unzip -DD 2020-07-12 05:38:03 +00:00
packaging Fix creating _dist_<goal> targets under !dist 2018-10-21 08:56:27 -07:00
target Remove hidl VNDK libs 2020-07-07 16:20:41 +09:00
tests Only set TARGET_PLATFORM version in lunch when explicitly requested 2017-05-01 14:26:40 -07:00
tools Merge "Fix validate_target_files for target files modified by" 2020-07-09 00:32:52 +00:00
.gitignore Add build subprojects to .gitignore 2015-07-23 13:18:47 -07:00
Changes.md BUILD_BROKEN_DUP_SYSPROP as escape hatch for the new sysprop restriction 2020-06-30 18:44:40 +09:00
CleanSpec.mk Remove /system/etc/prop.default 2020-05-14 16:28:19 +09:00
Deprecation.md Obsolete unused module types 2020-04-18 21:00:18 -07:00
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 Do not print environment variables if ANDROID_QUIET_BUILD is set. 2020-06-04 10:48:15 -07:00
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
rbesetup.sh rbe: Remove stray / 2020-06-13 22:38:58 +02:00
tapasHelp.sh Remove unused mips workarounds. 2020-03-06 16:46:59 -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For an outdated reference on Android.mk files, see build-system.html.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.