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bitbake: bitbake: ensure -f causes dependent tasks to be re-run

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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>
This commit is contained in:
Paul Eggleton
2012-10-11 11:43:51 -07:00
committed by Richard Purdie
parent 9945923c8b
commit 732007cbb6
4 changed files with 61 additions and 9 deletions
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6
bitbake/lib/bb/cooker.py
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@@ -1066,10 +1066,10 @@ class BBCooker:
self.status.rundeps[fn] = []
self.status.runrecs[fn] = []
# Remove stamp for target if force mode active
# Invalidate task for target if force mode active
if self.configuration.force:
logger.verbose("Remove stamp %s, %s", task, fn)
bb.build.del_stamp('do_%s' % task, self.status, fn)
logger.verbose("Invalidate task %s, %s", task, fn)
bb.parse.siggen.invalidate_task('do_%s' % task, self.status, fn)
# Setup taskdata structure
taskdata = bb.taskdata.TaskData(self.configuration.abort)