From: Nicolas Schier <nsc@kernel.org>
To: Nathan Chancellor <nathan@kernel.org>, Jonathan Corbet <corbet@lwn.net>
Cc: Ard Biesheuvel <ardb@kernel.org>,
Ben Hutchings <ben@decadent.org.uk>,
Jonathan Corbet <corbet@lwn.net>,
Masahiro Yamada <masahiroy@kernel.org>,
Nathan Chancellor <nathan@kernel.org>,
Randy Dunlap <rdunlap@infradead.org>,
linux-doc@vger.kernel.org, linux-kbuild@vger.kernel.org,
linux-kernel@vger.kernel.org, Nicolas Schier <nsc@kernel.org>
Subject: [PATCH v2] Documentation: kbuild: note CONFIG_DEBUG_EFI in reproducible builds
Date: Wed, 24 Sep 2025 21:47:58 +0200 [thread overview]
Message-ID: <20250924-kbuild-doc-config-debug-efi-in-reproducible-builds-v2-1-d2d6b9dcdb7d@kernel.org> (raw)
From: Masahiro Yamada <masahiroy@kernel.org>
CONFIG_EFI_DEBUG embeds absolute file paths into object files, which
makes the resulting vmlinux specific to the build environment.
Add a note about this in reproducible-builds.rst
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Nicolas Schier <nsc@kernel.org>
---
Changes in v2:
* Fixed a grammar typo (Randy)
* v1: https://lore.kernel.org/linux-kbuild/20250625125809.2504963-1-masahiroy@kernel.org
---
Documentation/kbuild/reproducible-builds.rst | 3 +++
1 file changed, 3 insertions(+)
diff --git a/Documentation/kbuild/reproducible-builds.rst b/Documentation/kbuild/reproducible-builds.rst
index f2dcc39044e66ddd165646e0b51ccb0209aca7dd..96d208e578cd53d3f0c4a24ec983a9179260345d 100644
--- a/Documentation/kbuild/reproducible-builds.rst
+++ b/Documentation/kbuild/reproducible-builds.rst
@@ -61,6 +61,9 @@ supported.
The Reproducible Builds web site has more information about these
`prefix-map options`_.
+Some CONFIG options such as `CONFIG_DEBUG_EFI` embed absolute paths in
+object files. Such options should be disabled.
+
Generated files in source packages
----------------------------------
---
base-commit: cec1e6e5d1ab33403b809f79cd20d6aff124ccfe
change-id: 20250924-kbuild-doc-config-debug-efi-in-reproducible-builds-eb7489a8d185
Best regards,
--
Nicolas
next reply other threads:[~2025-09-24 19:48 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-24 19:47 Nicolas Schier [this message]
2025-09-24 23:15 ` [PATCH v2] Documentation: kbuild: note CONFIG_DEBUG_EFI in reproducible builds Randy Dunlap
2025-09-25 11:42 ` Nathan Chancellor
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