2d2ce7dd02
This CL handles a path that uses system-root-image on non-A/B device.
For this path, we can't generate recovery-from-boot patch with imgdiff,
because boot/recovery images contain different number of entries (only
recovery iamge has ramdisk image now).
Using BOARD_USES_FULL_RECOVERY_IMAGE can work around the issue, at the
cost of extra size. Compared to carrying full recovery image, this CL
saves the cost of the kernel size, by putting a patch that's roughly the
size of the recovery ramdisk.
The applypatch executable already detects and handles a bsdiff patch
automatically. No change required to that end.
Note that it won't further reduce the patch size by handling that
ramdisk entry specially, because (a) that's the only difference between
the two images; and (b) there's no corresponding data in boot image to
be diff'd against.
Bug: 72731506
Test: `m dist` with aosp_angler-userdebug. Check the device can install
recovery image successfully (after intentionally corrupting the
recovery image).
Test: Build aosp_angler-userdebug with BOARD_BUILD_SYSTEM_ROOT_IMAGE set.
Verify the generated patch files.
Test: Run validate_target_files.py with the target_files.zips.
Change-Id: I69c06f51ba8c39ae059c5e9a6872a9f10600cf17
Merged-In: I69c06f51ba8c39ae059c5e9a6872a9f10600cf17
(cherry picked from commit
|
||
|---|---|---|
| core | ||
| target | ||
| tests | ||
| tools | ||
| .gitignore | ||
| Android.mk | ||
| Changes.md | ||
| CleanSpec.mk | ||
| OWNERS | ||
| README.md | ||
| Usage.txt | ||
| buildspec.mk.default | ||
| envsetup.sh | ||
| help.sh | ||
| navbar.md | ||
| tapasHelp.sh | ||
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For an outdated reference on Android.mk files, see build-system.html.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.