linux-kernel - Re: [PATCH] powerpc: remove meaningless KBUILD

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Message-ID: <20190715072959.GB20882@gate.crashing.org>
Date:   Mon, 15 Jul 2019 02:29:59 -0500
From:   Segher Boessenkool <segher@...nel.crashing.org>
To:     Michael Ellerman <mpe@...erman.id.au>
Cc:     Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Stephen Rothwell <sfr@...b.auug.org.au>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Nicholas Piggin <npiggin@...il.com>,
        Paul Mackerras <paulus@...ba.org>,
        linuxppc-dev <linuxppc-dev@...ts.ozlabs.org>
Subject: Re: [PATCH] powerpc: remove meaningless KBUILD_ARFLAGS addition

On Mon, Jul 15, 2019 at 05:05:34PM +1000, Michael Ellerman wrote:
> Segher Boessenkool <segher@...nel.crashing.org> writes:
> > Yes, that is why I used the environment variable, all binutils work
> > with that.  There was no --target option in GNU ar before 2.22.
> 
> Yeah, we're not very good at testing with really old binutils, so I
> guess we broke that.
> 
> I'm inclined to merge this, it doesn't seem to break anything, and it
> fixes using --target on old binutils that don't have it.

But we don't set the target any other way either.  I don't think this
will work with a 32-bit toolchain (default target 32 bit) and a 64-bit
kernel, or the other way around.

Then again, does that work at *all* nowadays?  Do we even consider that
important, *should* it work?


Segher