This is not documented or tested, and indeed hasn't been producing useful reports
for some time.
The script works by redirecting STAMPS_DIR into a separate location,
then running bitbake -S none, then comparing the two sets of stamp
filenames with regexes:
Match the stamp's filename
group(1): PE_PV (may no PE)
group(2): PR
group(3): TASK
group(4): HASH
stamp_re = re.compile("(?P<pv>.*)-(?P<pr>r\d+)\.(?P<task>do_\w+)\.(?P<hash>[^\.]*)")
Then there's some code that finds out what changed in the above between the two sets.
Messing about with STAMPS_DIR like that isn't supported, and will either do nothing,
or remove the original stamps. Also stamp filenames aren't really a 'public API'.
For finding out the changes between two builds, 'bitbake -s printdiff' is a supported
and tested option. It may be a bit too verbose, but that can be more easily fixed than
rewriting bitbake-whatchanged into a working state.
(From OE-Core rev: f8193978eb0944e693e6a5cfbf9035e104e489f0)
Signed-off-by: Alexander Kanavin <alex@linutronix.de>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
15b08b8234