> Kbuild does not cater to the mixture of clean targets and build targets,
> but I do not know why.
The details has long escaped me but in general we do not want to
have a job deleting all .o files running in parallel with a job that
creates .o files.
So we wanted the following to work:
$make mrproper defconfig
make would in the standard configuration execute "mrproper" and "defconfig"
in parallel which would result in a broken build.
This is the background for some of the ugly hacks in the