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Masahiro Yamada 4780a614f0 kconfig: fix file name in warnings when loading KCONFIG_DEFCONFIG_LIST 
[ Upstream commit a314f52a02 ]

Most 'make *config' commands use .config as the base configuration file.

When .config does not exist, Kconfig tries to load a file listed in
KCONFIG_DEFCONFIG_LIST instead.

However, since commit b75b0a819a ("kconfig: change defconfig_list
option to environment variable"), warning messages have displayed an
incorrect file name in such cases.

Below is a demonstration using Debian Trixie. While loading
/boot/config-6.12.9-amd64, the warning messages incorrectly show .config
as the file name.

With this commit, the correct file name is displayed in warnings.

[Before]

  $ rm -f .config
  $ make config
  #
  # using defaults found in /boot/config-6.12.9-amd64
  #
  .config:6804:warning: symbol value 'm' invalid for FB_BACKLIGHT
  .config:9895:warning: symbol value 'm' invalid for ANDROID_BINDER_IPC

[After]

  $ rm -f .config
  $ make config
  #
  # using defaults found in /boot/config-6.12.9-amd64
  #
  /boot/config-6.12.9-amd64:6804:warning: symbol value 'm' invalid for FB_BACKLIGHT
  /boot/config-6.12.9-amd64:9895:warning: symbol value 'm' invalid for ANDROID_BINDER_IPC

Fixes: b75b0a819a ("kconfig: change defconfig_list option to environment variable")
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2025-03-13 12:50:13 +01:00
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README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.