Searched hist:"0 b588deffe5f925dbef96945e6c3b5ab65be6a33" (Results 1 – 1 of 1) sorted by relevance
/openbmc/u-boot/ |
H A D | Makefile | 0b588deffe5f925dbef96945e6c3b5ab65be6a33 Thu Jan 10 08:11:39 CST 2019 Masahiro Yamada <yamada.masahiro@socionext.com> kbuild: fix parallel build race caused by u-boot.cfg regeneration
Multiple people have reported intermittent build failure in parallel building.
Kever Yang reported this issue some time ago [1], but I could not get enough clue at that time.
This time, Richard Purdie provided a full build log [2], which was very helpful for me to root-cause it.
The cause of the problem is commit 0d982c585330 ("Makefile: add dependencies to regenerate u-boot.cfg when lost").
That commit added the 'cfg' as the prerequisite of the 'all' target, so the parallel build tries to run it simultaneously, then regenerates a symlink while building objects.
When u-boot.cfg is accidentally lost, let's rebuild it before descending into any subdirectories.
Also, what is annoying is u-boot.cfg is currently regenerated every time since it depends on FORCE. We can get rid of all the prerequisites of u-boot.cfg because u-boot.cfg is rebuilt anyway as the byproduct of auto.conf when a user updates the .config file.
[1] https://lists.denx.de/pipermail/u-boot/2018-June/330341.html [2] https://autobuilder.yoctoproject.org/typhoon/#/builders/65/builds/160/steps/7/logs/step1b
Fixes: 0d982c585330 ("Makefile: add dependencies to regenerate u-boot.cfg when lost") Reported-by: Kever Yang <kever.yang@rock-chips.com> Reported-by: Richard Purdie <richard.purdie@linuxfoundation.org> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by: Simon Glass <sjg@chromium.org>
|