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| H A D | Makefile | 404927758daac5ec4594071e033c1fa6ee9ca9b6 Tue Mar 31 00:09:08 UTC 2026 Justin Stitt <justinstitt@google.com> kbuild: expand inlining hints with -fdiagnostics-show-inlining-chain
Clang recently added -fdiagnostics-show-inlining-chain [1] to improve
the visibility of inlining chains in diagnostics. This is particularly
useful for CONFIG_FORTIFY_SOURCE where detections can happen deep in
inlined functions.
Add this flag to KBUILD_CFLAGS under a cc-option so it is enabled if the
compiler supports it. Note that GCC does not have an equivalent flag as
it supports a similar diagnostic structure unconditionally.
Link: https://github.com/llvm/llvm-project/pull/174892 [1]
Link: https://github.com/ClangBuiltLinux/linux/issues/1571
Signed-off-by: Justin Stitt <justinstitt@google.com>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Kees Cook <kees@kernel.org>
Link: https://patch.msgid.link/20260330-kbuild-show-inlining-v2-1-c0c481a4ea7b@google.com
Signed-off-by: Nicolas Schier <nsc@kernel.org>
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