build system

Clone this repo:
  1. 7ffa8b8 Merge "Revert "Do not set ro.iorapd.enable=true"" by Yan Wang · 24 hours ago master
  2. af2e804 Revert "Do not set ro.iorapd.enable=true" by Yan Wang · 2 days ago
  3. caf8f60 Merge "current.txt: remove libadf since it is no longer supported" by Elliott Hughes · 27 hours ago
  4. 00c7fcc current.txt: remove libadf since it is no longer supported by Marissa Wall · 11 months ago
  5. 55abbc7 Merge "Add skeleton for product-config tool." by Joe Onorato · 33 hours ago

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For an outdated reference on Android.mk files, see build-system.html.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