Bug 11849

Summary: Using rm_work results in rebuilding of image phases rather than using sstate
Product: [Build System, Metadata & Runtime] Meta-yocto Reporter: Drew Moseley <drew>
Component: meta-yoctoAssignee: Richard Purdie <richard.purdie>
Status: RESOLVED FIXED QA Contact:
Severity: minor    
Priority: Undecided CC: poky.bs.watcher, poky.watcher
Version: 2.3.2   
Target Milestone: ---   
Hardware: x86   
OS: Multiple   
Whiteboard:
OS type for building Yocto: --- Type of Regression: ---
Verified: Documentation change: No (bug/feature does not impact docs)
Attachments:
Description Flags
Log of build steps showing the issue. none

Description Drew Moseley 2017-07-27 22:26:05 UTC 
With the current pyro (5686f4e1fe5229705b8c7d35895aa03827796d13) branch, if I do a build without 'INHERIT += "rm_work"' and then immediately do another build, then no tasks needed to be rerun as expected.

If I add 'INHERIT += "rm_work"' then the subsequent build reruns a number of the image related tasks.

I have seen this behavior in both the pyro and master branches as well as against several different MACHINE settings.

I'll attach a text file with some of my logs.
Comment 1 Drew Moseley 2017-07-27 22:27:08 UTC 
Created attachment 3893 [details]
Log of build steps showing the issue.
Comment 2 Richard Purdie 2017-07-30 22:25:35 UTC 
This turned out to be quite tricky but there are patches on the mailing list for testing for master. Not sure we'd want to backport things this invasive to pyro.
Comment 3 Drew Moseley 2017-07-31 02:59:29 UTC 
For what it's worth, I applied the 5 patches from this series:
    http://lists.openembedded.org/pipermail/openembedded-devel/2017-July/113929.html
to my local build tree in both the Pyro and Master branches and verified that indeed the extra rebuilds no longer occur.

I did have to modify the patch slightly to drop the bits related to systemtap but otherwise it seemed to work.
Comment 4 Richard Purdie 2017-07-31 14:52:07 UTC 
These were merged into master: http://git.yoctoproject.org/cgit.cgi/poky/commit/?id=a089f7b73581f975258dfddaef9f9063ff0f8818

(thanks for testing)