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linux/scripts/kconfig/tests/err_repeated_inc
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Nicolas Schier 102d712ded
 kconfig: Error out on duplicated kconfig inclusion 
Let kconfig exit with error on duplicated Kconfig file inclusion.

Repeated inclusion of Kbuild files are considered bad-practise with
regard to maintenance; and Kconfig language is rich enough that there
should be no need for that.

If repeated inclusion of Kconfig files is detected, error out with
messages like:

    Kconfig.inc1:4: error: repeated inclusion of Kconfig.inc3
    Kconfig.inc2:3: note: location of first inclusion of Kconfig.inc3

While commit f094f8a1b2 ("kconfig: allow multiple inclusion of the
same file") introduced detection of recursive inclusions of Kconfig
files, it explicitly allowed repeated inclusions, unfortunately w/o
reasoning.

Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Closes: https://lore.kernel.org/all/CAHk-=wj03hLzK2D=+OYmjgcmGM+XYymp8GyaEs=C0=rXG2nb7w@mail.gmail.com/
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Tested-by: Nathan Chancellor <nathan@kernel.org>
Link: https://patch.msgid.link/20260220-kconfig-error-out-on-duplicated-inclusion-v1-1-be78aa241a53@kernel.org
Signed-off-by: Nicolas Schier <nsc@kernel.org>
History 2026-02-27 09:26:58 +01:00
..
__init__.py kconfig: Error out on duplicated kconfig inclusion 2026-02-27 09:26:58 +01:00
expected_stderr kconfig: Error out on duplicated kconfig inclusion 2026-02-27 09:26:58 +01:00
Kconfig kconfig: Error out on duplicated kconfig inclusion 2026-02-27 09:26:58 +01:00
Kconfig.inc1 kconfig: Error out on duplicated kconfig inclusion 2026-02-27 09:26:58 +01:00
Kconfig.inc2 kconfig: Error out on duplicated kconfig inclusion 2026-02-27 09:26:58 +01:00
Kconfig.inc3 kconfig: Error out on duplicated kconfig inclusion 2026-02-27 09:26:58 +01:00