[PATCH] Makefile: add allow-list for failures

[Andreas K. Huettel]

Am Freitag, 12. Dezember 2025, 11:22:48 Mitteleuropäische Normalzeit schrieb Martin Coufal:
> Enable adding known failures to allowed-failures.txt and ignore failures
> in case they are in the list.  In case the allowed-failures.txt does not
> exist, all failures lead to a failed status as before.
> 
> When the file is present, failures of listed tests are ignored and reported
> on stdout. If tests not in the allowed list fail, summarize-tests exits with
> status 1 and reports the failing tests.

We already have the option to pass test-xfail-${testname}=yes to make, see
e.g.
https://gitweb.gentoo.org/repo/gentoo.git/tree/sys-libs/glibc/glibc-9999.ebuild#n1294

Nevertheless this could be nice since it's easier to drop a text file into 
the source dir. It makes no sense to keep such an allowed-failures.txt file
in the git repo though as the failures strongly depend on the precise 
settings and environment.

-- 
Andreas K. Hüttel
dilfridge@gentoo.org
Gentoo Linux developer
(council, toolchain, base-system, perl, libreoffice)
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