On Fri, Feb 12, 2021 at 12:30:45PM +0900, Masahiro Yamada wrote:

SNIP

I expected this kind of mess
when I saw 33a57ce0a54d498275f432db04850001175dfdfa


The tools/ directory is a completely different world
governed by a different build system
(no, not a build system, but a collection of adhoc makefile code)


All the other programs used during the kernel build
are located under scripts/, and can be built with
a simple syntax, and cleaned up correctly.
It is simple, clean and robust.

objtool is the first alien that opt out Kbuild,
and this is the second one.


It is scary to mix up two different things,
which run in different working directories.

would you see any way out? apart from changing resolve_btfids
to use Kbuild.. there are some dependencies we'd need to change
as well and they are used by other tools.. probably it'd end up
with all or nothing scenario

See, this is wired up in the top Makefile
in an ugly way, and you are struggling
in suppressing issues, where you can never
do it in the right way.

maybe we could move it out of top makefile into separate one,
that would handle all the related mess

jirka