'nostamp' is normally used for some standalone tasks like clean, checkuri, etc.
It doesn't make sense to mark do_populate_lic as 'nostamp', which is depended
by do_package. No stamp file in the build dependency chain implicates that
do_package needs to be reinvoked and thus further do_package_write* stuff.
This together with another sstate bug fully confused recent master, that people
keep observing unnecessary do_package rebuilt with or without change. Below is
a short explanation for two behaviors we observed:
a) a fresh build, and then bitbake same target w/o any change. User will observe
one unnecessary rebuild and then later rebuild is fine:
[1st rebuild]
* do_populate_lic has no stamp, and thus do_package is thought not current
* do_package_setscene is then invoked with stamp file created
* then later do_package_write*** also are rebuilt
[2nd and later rebuild]
* do_populate_lic has no stamp, and thus do_package is thought not current
* do_package_setscene has stamp file and thus no need to re-execute setscene
* thus no further rebuild required
b) a fresh build, and then adjust order of PACKAGE_CLASSES. There's one bug
regarding to PACKAGE_CLASSES and do_package_setscene, that only switch the
order in PACKAGE_CLASSES generates different checksum. In this case user may
observe up to 3 rebuilds when switching package_rpm/package_ipk back and forth.
Signed-off-by: Lianhao Lu <lianhao.lu@intel.com> Signed-off-by: Kevin Tian <kevin.tian@intel.com>
