| commit | ce8c05196d6104e10f1b004caea0969a3089e138 | [log] [tgz] |
|---|---|---|
| author | Colin Cross <ccross@android.com> | Fri Feb 16 09:14:01 2018 -0800 |
| committer | Colin Cross <ccross@android.com> | Fri Feb 16 09:41:24 2018 -0800 |
| tree | 9be218025925075dfe94490b9e8e4b12dd57e23b | |
| parent | dc6e822374224020ddc7194ab4f36274f236d864 [diff] |
Partially revert BUILD_DATETIME change Change Ibe4ceb1b224c5e8f3e1a8a59cfee89217765a901 caused kati to regenerate on every build: $(shell cat out/build_date.txt) was changed, regenerating... Switch back to $(shell date +%s) which is special cased in kati to not cause a regeneration. Everything besides DATE will still use BUILD_DATETIME_FROM_FILE from soong_ui. Once BUILD_NUMBER is moved to soong_ui $(DATE) is no longer necessary and the whole thing can be removed. Bug: 70351683 Bug: 73352417 Test: m && m doesn't regenerate Test: m BUILD_DATETIME=1234 shows up in ro.build.version.incremental Change-Id: I8444beb2b47a49095ef760083fc85f220821bffe
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For an outdated reference on Android.mk files, see build-system.html.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.