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bitbake: bitbake: improve descriptions of '-S printdiff'

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(Bitbake rev: becf88c2250a47102c8d36ad8b40839e0bfa9137)

Signed-off-by: Alexander Kanavin <alex@linutronix.de>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Alexander Kanavin 2024-03-18 15:52:18 +01:00 committed by Richard Purdie
parent 1b15f9e78a
commit 98d09d41fa
2 changed files with 7 additions and 4 deletions
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7
bitbake/doc/bitbake-user-manual/bitbake-user-manual-execution.rst
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@ -586,10 +586,11 @@ or possibly those defined in the metadata/signature handler itself. The
simplest parameter to pass is "none", which causes a set of signature
information to be written out into ``STAMPS_DIR`` corresponding to the
targets specified. The other currently available parameter is
"printdiff", which causes BitBake to try to establish the closest
"printdiff", which causes BitBake to try to establish the most recent
signature match it can (e.g. in the sstate cache) and then run
``bitbake-diffsigs`` over the matches to determine the stamps and delta
where these two stamp trees diverge.
compare the matched signatures to determine the stamps and delta
where these two stamp trees diverge. This can be used to determine why
tasks need to be re-run in situations where that is not expected.
.. note::

4
bitbake/lib/bb/main.py
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@ -217,7 +217,9 @@ def create_bitbake_parser():
"execution. The SIGNATURE_HANDLER parameter is passed to the "
"handler. Two common values are none and printdiff but the handler "
"may define more/less. none means only dump the signature, printdiff"
" means compare the dumped signature with the cached one.")
" means recursively compare the dumped signature with the most recent"
" one in a local build or sstate cache (can be used to find out why tasks re-run"
" when that is not expected)")
exec_group.add_argument("--revisions-changed", action="store_true",
help="Set the exit code depending on whether upstream floating "