5bab0dd1c4
RemoveBackwardEdges() was used only in BBOTA v1 (which has been deprecated since O). v2+ calls ReverseBackwardEdges() and ImproveVertexSequence(). Also remove the imgdiff tag of 'trimmed' that would be set through this function() only. Test: python -m unittest test_blockimgdiff Test: Build an incremental non-A/B OTA. Test: Code search shows no active user. Change-Id: I3b58ae048a1fbc283269e70fdfa29eb8d184ede7
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For an outdated reference on Android.mk files, see build-system.html.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.