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objtool: Add --Werror option

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Any objtool warning has the potential of reflecting (or triggering) a
major bug in the kernel or compiler which could result in crashing the
kernel or breaking the livepatch consistency model.

In preparation for failing the build on objtool errors/warnings, add a
new --Werror option.

[ jpoimboe: commit log, comments, error out on fatal errors too ]

Co-developed-by: Brendan Jackman <jackmanb@google.com>
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/e423ea4ec297f510a108aa6c78b52b9fe30fa8c1.1741975349.git.jpoimboe@kernel.org
This commit is contained in:
Josh Poimboeuf
2025-03-14 12:29:08 -07:00
committed by Peter Zijlstra
parent 5a406031d0
commit bb62243943
3 changed files with 14 additions and 3 deletions
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1
tools/objtool/include/objtool/builtin.h
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@@ -39,6 +39,7 @@ struct opts {
bool sec_address;
bool stats;
bool verbose;
bool werror;
};
extern struct opts opts;