Make it possible to avoid specifying boot partition sizes.

Virtual platforms may have no boot partition as such, so there
is no practical limit on the partition size. Therefore, make it
possible to omit the partition size (i.e. by omitting a definition of
BOARD_*BOOTIMAGE_PARTITION_SIZE), allowing unrestricted boot partition
sizes on those platforms.

The macro get-bootimage-partition-size needs to return an empty string
in the case where the variable is not defined in order for consumers
such as assert-max-image-size and get-hash-image-max-size that test
its result using $(if) to properly disable the size check in that
case. The indentation was causing the macro to return the string
"  " instead, which caused an unrequested size check to be inserted.
Fix it by removing the indentation.

A separate patch to avbtool makes it possible to omit the
--partition_size argument when passing --dynamic_partition_size.

Change-Id: Ie836feeb4c3e3b86d9c7950ff45933294cea9410
Bug: 142352330
1 file changed
tree: 1d5ec0c25c81be5034a2d37eb723f67050098765
  1. common/
  2. core/
  3. packaging/
  4. target/
  5. tests/
  6. tools/
  7. .gitignore
  8. banchanHelp.sh
  9. buildspec.mk.default
  10. Changes.md
  11. CleanSpec.mk
  12. Deprecation.md
  13. envsetup.sh
  14. help.sh
  15. METADATA
  16. navbar.md
  17. OWNERS
  18. PREUPLOAD.cfg
  19. rbesetup.sh
  20. README.md
  21. tapasHelp.sh
  22. Usage.txt
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For an outdated reference on Android.mk files, see build-system.html.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.