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author | Paul Eggleton <paul.eggleton@linux.intel.com> | 2012-10-11 11:43:51 -0700 |
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committer | Richard Purdie <richard.purdie@linuxfoundation.org> | 2012-10-12 08:58:34 +0100 |
commit | 732007cbb627f648ce536554c28471f9acd58e9e (patch) | |
tree | 1442a4dfc16f3ba9ba4d5acef199ba24853ee277 /bitbake/lib/bb/build.py | |
parent | 9945923c8bc2479a72a913ee718ca823c69360b3 (diff) | |
download | poky-732007cbb627f648ce536554c28471f9acd58e9e.tar.gz |
bitbake: bitbake: ensure -f causes dependent tasks to be re-run
If -f is specified, force dependent tasks to be re-run next time. This
works by changing the force behaviour so that instead of deleting the
task's stamp, we write a "taint" file into the stamps directory, which
will alter the taskhash randomly and thus trigger the task to re-run
next time we evaluate whether or not that should be done as well as
influencing the taskhashes of any dependent tasks so that they are
similarly re-triggered. As a bonus because we write this file as
<stamp file name>.taskname.taint, the existing code which deletes the
stamp files in OE's do_clean will already handle removing it.
This means you can now do the following:
bitbake somepackage
[ change the source code in the package's WORKDIR ]
bitbake -c compile -f somepackage
bitbake somepackage
and the result will be that all of the tasks that depend on do_compile
(do_install, do_package, etc.) will be re-run in the last step.
Note that to operate in the manner described above you need full hashing
enabled (i.e. BB_SIGNATURE_HANDLER must be set to a signature handler
that inherits from BasicHash). If this is not the case, -f will just
delete the stamp for the specified task as it did before.
This fix is required for [YOCTO #2615] and [YOCTO #2256].
(Bitbake rev: f7b55a94226f9acd985f87946e26d01bd86a35bb)
Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Diffstat (limited to 'bitbake/lib/bb/build.py')
-rw-r--r-- | bitbake/lib/bb/build.py | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/bitbake/lib/bb/build.py b/bitbake/lib/bb/build.py index 95f1dcfcb7..f912a6bfe1 100644 --- a/bitbake/lib/bb/build.py +++ b/bitbake/lib/bb/build.py | |||
@@ -458,6 +458,24 @@ def del_stamp(task, d, file_name = None): | |||
458 | stamp = stamp_internal(task, d, file_name) | 458 | stamp = stamp_internal(task, d, file_name) |
459 | bb.utils.remove(stamp) | 459 | bb.utils.remove(stamp) |
460 | 460 | ||
461 | def write_taint(task, d, file_name = None): | ||
462 | """ | ||
463 | Creates a "taint" file which will force the specified task and its | ||
464 | dependents to be re-run the next time by influencing the value of its | ||
465 | taskhash. | ||
466 | (d can be a data dict or dataCache) | ||
467 | """ | ||
468 | import uuid | ||
469 | if file_name: | ||
470 | taintfn = d.stamp[file_name] + '.' + task + '.taint' | ||
471 | else: | ||
472 | taintfn = d.getVar('STAMP', True) + '.' + task + '.taint' | ||
473 | bb.utils.mkdirhier(os.path.dirname(taintfn)) | ||
474 | # The specific content of the taint file is not really important, | ||
475 | # we just need it to be random, so a random UUID is used | ||
476 | with open(taintfn, 'w') as taintf: | ||
477 | taintf.write(str(uuid.uuid4())) | ||
478 | |||
461 | def stampfile(taskname, d, file_name = None): | 479 | def stampfile(taskname, d, file_name = None): |
462 | """ | 480 | """ |
463 | Return the stamp for a given task | 481 | Return the stamp for a given task |