From: Nathan Chancellor nathan@kernel.org
[ Upstream commit 42d9b379e3e1790eafb87c799c9edfd0b37a37c7 ]
Commit 98cd6f521f10 ("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=7d8e829f63...
Change-Id: I9cc90f12abcc8a809bb263e31ec16766d9384e40 Signed-off-by: Nathan Chancellor nathan@kernel.org Signed-off-by: Daniel Borkmann daniel@iogearbox.net Acked-by: Andrii Nakryiko andrii@kernel.org Link: https://lore.kernel.org/bpf/20220201205624.652313-6-nathan@kernel.org Signed-off-by: Matthias Maennich maennich@google.com --- lib/Kconfig.debug | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 944fd2ae756b..dbbd243c865f 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -302,7 +302,7 @@ config DEBUG_INFO_DWARF4 config DEBUG_INFO_DWARF5 bool "Generate DWARF Version 5 debuginfo" depends on !CC_IS_CLANG || AS_IS_LLVM || (AS_IS_GNU && AS_VERSION >= 23502 && AS_HAS_NON_CONST_LEB128) - 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