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docs/bpf: Document BPF_STRICT_BUILD=0 to tolerate test build failures

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When the kernel config does not fully match the BPF selftest config
fragment, some tests may fail to compile. BPF_STRICT_BUILD (defaulting to
1) makes any such failure fatal. Mention the option so that developers are
aware they can set it to 0 to skip broken tests and keep the build going,
which is particularly useful during bringup or when testing on constrained
(e.g. distribution) configurations.

Signed-off-by: Ricardo B. Marlière <rbm@suse.com>
Reviewed-by: Emil Tsalapatis <emil@etsalapatis.com>
Link: https://lore.kernel.org/bpf/20260706-b4-bpf_strict_build_docs-v1-1-5324d605c7b0@suse.com
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
This commit is contained in:
Ricardo B. Marlière
2026-07-06 12:28:43 -03:00
committed by Kumar Kartikeya Dwivedi
parent dfe39ce7b0
commit f66d25468b
1 changed files with 4 additions and 1 deletions
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5
Documentation/bpf/bpf_devel_QA.rst
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@@ -479,7 +479,10 @@ for details.
To maximize the number of tests passing, the .config of the kernel
under test should match the config file fragment in
tools/testing/selftests/bpf as closely as possible.
tools/testing/selftests/bpf as closely as possible. If not possible,
however, you can set ``BPF_STRICT_BUILD=0`` when invoking ``make``
to tolerate individual compilation failures and continue building
the remaining tests rather than treating each failure as fatal.
Finally to ensure support for latest BPF Type Format features -
discussed in Documentation/bpf/btf.rst - pahole version 1.16