Implement sysprop_library API stability check
sysprop_library now checks the API stability itself, cutting dependency
on java_sdk_library. Under the directory {module_dir}/api,
{module_name}-current.txt and {module_name}-latest.txt hold API
signatures.
When sysprop_library is built, or a user run "m {module_name}-check-api"
command, API check is performed. First, current.txt must have exactly
same signature with built sysprop_library module. Second, current.txt
must be compatible with latest.txt.
Build system emits a handy error message to generate/update those API
files, in case of missing or mismatching. Also, a script file for
freezing API files is introduced.
Bug: 131637873
Test: 1) m && boot blueline
Test: 2) m {sysprop_library} performs API check
Test: 3) manual test for check-api, freezing api
Change-Id: Ie4bd35eb87d384dd51e0a562c68dfa820d9bea7b
Merged-In: Ie4bd35eb87d384dd51e0a562c68dfa820d9bea7b
Merged-In: I48b4a8f0e2c3b2bd263250032349338cb21b17bb
(cherry picked from commit 442679b0a0c16fff64f4a927feffcf3d6cb6801d)
15 files changed