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lib/Kconfig.debug: Allow BTF + DWARF5 with pahole 1.21+

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Commit 98cd6f521f ("Kconfig: allow explicit opt in to DWARF v5")
prevented CONFIG_DEBUG_INFO_DWARF5 from being selected when
CONFIG_DEBUG_INFO_BTF is enabled because pahole had issues with clang's
DWARF5 info. This was resolved by [1], which is in pahole v1.21.

Allow DEBUG_INFO_DWARF5 to be selected with DEBUG_INFO_BTF when using
pahole v1.21 or newer.

[1]: https://git.kernel.org/pub/scm/devel/pahole/pahole.git/commit/?id=7d8e829f636f47aba2e1b6eda57e74d8e31f733c

Signed-off-by: Nathan Chancellor <[email protected]>
Signed-off-by: Daniel Borkmann <[email protected]>
Acked-by: Andrii Nakryiko <[email protected]>
Link: https://lore.kernel.org/bpf/[email protected]
This commit is contained in:
Nathan Chancellor authored and Daniel Borkmann committed 2022-02-02 11:19:34 +01:00
1 parent 6323c81350
commit 42d9b379e3
1 file changed
+1 -1
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lib/Kconfig.debug
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@@ -296,7 +296,7 @@ config DEBUG_INFO_DWARF4
config DEBUG_INFO_DWARF5
bool "Generate DWARF Version 5 debuginfo"
depends on !CC_IS_CLANG || (CC_IS_CLANG && (AS_IS_LLVM || (AS_IS_GNU && AS_VERSION >= 23502)))
depends on !DEBUG_INFO_BTF
depends on !DEBUG_INFO_BTF || PAHOLE_VERSION >= 121
help
Generate DWARF v5 debug info. Requires binutils 2.35.2, gcc 5.0+ (gcc
5.0+ accepts the -gdwarf-5 flag but only had partial support for some