linux-kernel - Re: [PATCH] kbuild: fix compilation of dtb specified on command-line without make rule

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Message-ID: <aSWKdgypKqt1Mq_J@L-PF2SHBMP>
Date: Tue, 25 Nov 2025 11:52:38 +0100
From: Thomas De Schampheleire <thomas.de_schampheleire@...ia.com>
To: Rob Herring <robh@...nel.org>
Cc: linux-kbuild@...r.kernel.org, Masahiro Yamada <masahiroy@...nel.org>,
	Nathan Chancellor <nathan@...nel.org>,
	Nicolas Schier <nsc@...nel.org>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] kbuild: fix compilation of dtb specified on command-line
 without make rule

On Mon, Nov 24, 2025 at 07:07:47AM -0600, Rob Herring wrote:
> On Thu, Nov 20, 2025 at 03:06:43PM +0100, Thomas De Schampheleire wrote:
[...]
> > In this scenario, both 'dtb-y' and 'dtb-' are empty, and the inclusion of
> > scripts/Makefile.dtbs relies on 'targets' to contain the MAKECMDGOALS. The
> > value of 'targets', however, is only final later in the code.
> >
> > Move the conditional include of scripts/Makefile.dtbs down to where the
> > value of 'targets' is final.
> 
> This breaks 'make dtbs' (and just 'make' for arm64).

I see the 'make dtbs' failure, I will investigate.

I don't yet see a problem with 'make ARCH=arm64 CROSS_COMPILE=[...]' after a
standard 'defconfig'. Can you please clarify how it fails for you?

Thanks,
Thomas