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| author | Masahiro Yamada <masahiroy@kernel.org> | 2024-09-13 20:37:53 +0300 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2024-09-14 06:03:29 +0300 |
| commit | 42450f7a9086cf38e97c3aeeaabd229af7abbbad (patch) | |
| tree | 9105296ff0cbc99f62a39d4a9646c3c5174cb07e /net | |
| parent | c980dc9c67a94ab716ffc06767cb435480bda09d (diff) | |
| download | linux-42450f7a9086cf38e97c3aeeaabd229af7abbbad.tar.xz | |
btf: move pahole check in scripts/link-vmlinux.sh to lib/Kconfig.debug
When DEBUG_INFO_DWARF5 is selected, pahole 1.21+ is required to enable
DEBUG_INFO_BTF.
When DEBUG_INFO_DWARF4 or DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT is selected,
DEBUG_INFO_BTF can be enabled without pahole installed, but a build error
will occur in scripts/link-vmlinux.sh:
LD .tmp_vmlinux1
BTF: .tmp_vmlinux1: pahole (pahole) is not available
Failed to generate BTF for vmlinux
Try to disable CONFIG_DEBUG_INFO_BTF
We did not guard DEBUG_INFO_BTF by PAHOLE_VERSION when previously
discussed [1].
However, commit 613fe1692377 ("kbuild: Add CONFIG_PAHOLE_VERSION")
added CONFIG_PAHOLE_VERSION after all. Now several CONFIG options, as
well as the combination of DEBUG_INFO_BTF and DEBUG_INFO_DWARF5, are
guarded by PAHOLE_VERSION.
The remaining compile-time check in scripts/link-vmlinux.sh now appears
to be an awkward inconsistency.
This commit adopts Nathan's original work.
[1]: https://lore.kernel.org/lkml/20210111180609.713998-1-natechancellor@gmail.com/
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Alan Maguire <alan.maguire@oracle.com>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Link: https://lore.kernel.org/r/20240913173759.1316390-2-masahiroy@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'net')
0 files changed, 0 insertions, 0 deletions