[Bug 263880] make clean, cleandir doesn't clean /usr/obj

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=263880

--- Comment #2 from Jonathan Vasquez <jon@xyinn.org> ---
Hey Ed,

That seems to be case. I went ahead and made a backup of my /usr/src and
/usr/obj so that I can clean them and show you the following. The below is
after today's build of 13.1-STABLE. I ran a 'make clean' for the purpose of
this example:

Before
=====
root@leslie:/usr # du -sh obj
6.6G    obj
root@leslie:/usr # du -sh src
2.2G    src

After
=====
root@leslie:/usr # du -sh obj
3.4G    obj
root@leslie:/usr # du -sh src
2.2G    src

Is 'make clean' suppose to still leave stuff behind given the man page
description? I'm not sure if that's intended. I do know that when building the
Linux kernel, if you do a 'make clean', it does clean up a bunch of stuff but
only leaves a minimum amount of left over files in order to allow people to
still be able to build kernel modules that are outside the tree (You can
actually reduce it even further if you know what files to keep, but that's
neither here nor there). A 'make distclean' would pretty much wipe everything
it built, and would nuke your kernel config as well, essentially bringing you
back to a pristine source tree as if you just had extracted it from kernel.org.

So with that context, is 'make clean' on FreeBSD suppose to leave that much
stuff behind? If so, what's the purpose for it (kernel module building (i.e
drm-kmod?). Is there an equivalent on FreeBSD to pretty much completely clean
out the tree and any build output etc? At the moment I would think doing the
following would get me back to a vanilla state:

# cd /usr/src
# make clean cleanworld
# git reset --hard HEAD
# git clean -dfx
# rm -rf /usr/obj/*

Thank you,
Jonathan

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