generic-poky/bitbake
Paul Eggleton 5bd11a9bf3 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>
2012-06-21 13:10:32 +01:00
..
bin image-writer: tweak some strings 2012-06-14 14:07:17 +01:00
contrib vim/syntax: Recognize ?? operator 2011-12-20 13:15:54 +00:00
doc bitbake: support $BITBAKE_UI environment 2012-05-23 11:35:11 +01:00
lib bitbake: bitbake: ensure -f causes dependent tasks to be re-run 2012-06-21 13:10:32 +01:00
AUTHORS misc: Update the email address to a working one. 2011-01-04 14:36:54 +00:00
COPYING bitbake: Sync with upstream. 2007-01-08 23:53:01 +00:00
ChangeLog *: Fix typo in documentation 2010-08-04 16:12:39 +01:00
HEADER bitbake: Sync with upstream. 2007-01-08 23:53:01 +00:00