Implement vendor snapshot
Vendor snapshot can be captured with "m dist vendor-snapshot". With
vendor snapshot and vndk snapshot, older version of /vendor and newer
version of /system will be able to be built together by setting
BOARD_VNDK_VERSION to past vendor's version.
Only vendor modules under AOSP are to be captured. In detail, modules
under following directories are ignored:
- cts/
- device/
- external/clang/
- external/llvm/
- hardware/, except for:
- interfaces/, libhardware/, libhardware_legacy/, ril/
- vendor/
Bug: 65377115
Test: m dist vendor-snapshot
Change-Id: Ib5859e409f8ab281ca137cae21e9ea08abd8a0b1
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For a list of behavioral changes useful for Android.mk writers see Changes.md
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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.