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authorMasahiro Yamada <masahiroy@kernel.org>2021-03-16 01:12:57 +0900
committerMasahiro Yamada <masahiroy@kernel.org>2021-04-25 05:15:10 +0900
commit2e98815794fb51250da4528f67fc2f699d5e3c37 (patch)
treefeed6f5cd81832e2f3297d1be5317b5a68f126a9 /lib
parentba64beb17493a4bfec563100c86a462a15926f24 (diff)
downloadlinux-2e98815794fb51250da4528f67fc2f699d5e3c37.tar.gz
kbuild: dwarf: use AS_VERSION instead of test_dwarf5_support.sh
The test code in scripts/test_dwarf5_support.sh is somewhat difficult to understand, but after all, we want to check binutils >= 2.35.2 From the former discussion, the requirement for generating DWARF v5 from C code is as follows: - gcc + gnu as -> requires gcc 5.0+ (but 7.0+ for full support) - clang + gnu as -> requires binutils 2.35.2+ - clang + integrated as -> OK Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Nathan Chancellor <nathan@kernel.org> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Diffstat (limited to 'lib')
-rw-r--r--lib/Kconfig.debug3
1 files changed, 1 insertions, 2 deletions
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index b479ae609a31..c85d5f7a1aeb 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -284,8 +284,7 @@ config DEBUG_INFO_DWARF4
config DEBUG_INFO_DWARF5
bool "Generate DWARF Version 5 debuginfo"
- depends on GCC_VERSION >= 50000 || CC_IS_CLANG
- depends on CC_IS_GCC || $(success,$(srctree)/scripts/test_dwarf5_support.sh $(CC) $(CLANG_FLAGS))
+ depends on GCC_VERSION >= 50000 || (CC_IS_CLANG && (AS_IS_LLVM || (AS_IS_GNU && AS_VERSION >= 23502)))
depends on !DEBUG_INFO_BTF
help
Generate DWARF v5 debug info. Requires binutils 2.35.2, gcc 5.0+ (gcc