linux-kernel - Re: [PATCH] kbuild, rust: use -fremap-path-prefix to make paths relative

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Message-ID: <CANiq72n9Wo6Mf7sVfm2akqiKknGNeTegiMesNtHzbHhWS4iQTQ@mail.gmail.com>
Date: Tue, 11 Mar 2025 12:25:10 +0100
From: Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
To: Masahiro Yamada <masahiroy@...nel.org>
Cc: Thomas Weißschuh <linux@...ssschuh.net>, 
	Ben Hutchings <ben@...adent.org.uk>, Nathan Chancellor <nathan@...nel.org>, 
	Nicolas Schier <nicolas@...sle.eu>, Miguel Ojeda <ojeda@...nel.org>, 
	Alex Gaynor <alex.gaynor@...il.com>, Boqun Feng <boqun.feng@...il.com>, 
	Gary Guo <gary@...yguo.net>, Björn Roy Baron <bjorn3_gh@...tonmail.com>, 
	Benno Lossin <benno.lossin@...ton.me>, Andreas Hindborg <a.hindborg@...nel.org>, 
	Alice Ryhl <aliceryhl@...gle.com>, Trevor Gross <tmgross@...ch.edu>, 
	Danilo Krummrich <dakr@...nel.org>, linux-kbuild@...r.kernel.org, 
	linux-kernel@...r.kernel.org, rust-for-linux@...r.kernel.org, 
	Urgau <urgau@...ericable.fr>
Subject: Re: [PATCH] kbuild, rust: use -fremap-path-prefix to make paths relative

On Tue, Mar 11, 2025 at 12:04 PM Masahiro Yamada <masahiroy@...nel.org> wrote:
>
> GCC manual mentions the below about the -fdebug-prefix-map=old=new
>
> "It can also be used to change an absolute path to
> a relative path by using . for new.
> This can give more reproducible builds, which are location
> independent, but may require an extra command to tell GDB
> where to find the source files."
>
> I guess "the extra command" might be a bit annoying.

Ah, so you mean that could be reason for not doing it for the debug
case -- I see, thanks!

Cheers,
Miguel