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Message-ID: <20241004-xanthic-shrew-of-trust-0f9e1d@lindesnes>
Date: Fri, 4 Oct 2024 20:51:38 +0200
From: Nicolas Schier <nicolas@...sle.eu>
To: Masahiro Yamada <masahiroy@...nel.org>
Cc: linux-kbuild@...r.kernel.org, Miguel Ojeda <ojeda@...nel.org>,
	rust-for-linux@...r.kernel.org, linux-kernel@...r.kernel.org,
	Nathan Chancellor <nathan@...nel.org>
Subject: Re: [PATCH 20/23] kbuild: support -fmacro-prefix-map for external
 modules

On Tue, Sep 17, 2024 at 11:16:48PM +0900, Masahiro Yamada wrote:
> This commit makes -fmacro-prefix-map work for external modules built in
> a separate output directory. It improves the reproducibility of external
> modules and provides the benefits described in commit a73619a845d5
> ("kbuild: use -fmacro-prefix-map to make __FILE__ a relative path").
> 
> When VPATH is not defined (e.g., when the kernel or external module is
> built in the source directory), this option is unnecessary.
> 
> Signed-off-by: Masahiro Yamada <masahiroy@...nel.org>
> ---
> 
>  Makefile | 6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)

Reviewed-by: Nicolas Schier <nicolas@...sle.eu>

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