Yocto：如何在不全部重建的情况下删除图层

Question

I'm playing with a Yocto project that has in its conf/bblayers.conf file the following line:

ADDONSLAYERS += "${@'${OEROOT}/layers/meta-qt5' if os.path.isfile('${OEROOT}/layers/meta-qt5/conf/layer.conf') else ''}"

I partially bitbaked the project but now I want to try to disable the whole meta-qt5 layer. After commenting out the line above, how to remove the already built files from the output folder and go on with the others?

I tried with bitbake -c cleansstate meta-qt5 but it doesn't work. I guess it works with recipes only, and not with whole layers.

Answer 1

Easiest way to clean a build is to remove TMPDIR temporary folder (default is <build>/tmp ).

That will remove previous compilation results, but those are also kept in SSTATE_DIR cache folder. Next build will not rebuild all, it will reuse cache results to speed it up.

Then, you can clean your cache folder for obsolete entries with sstate-cache-management.sh script:

# Example of usage (after sourcing oe-init-build-env)
sstate-cache-management.sh --cache-dir=../sstate-cache -d -y