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| author | Masahiro Yamada <masahiroy@kernel.org> | 2021-03-15 17:12:57 +0100 |
|---|---|---|
| committer | Masahiro Yamada <masahiroy@kernel.org> | 2021-04-24 22:15:10 +0200 |
| commit | 2e98815794fb51250da4528f67fc2f699d5e3c37 (patch) | |
| tree | feed6f5cd81832e2f3297d1be5317b5a68f126a9 /lib | |
| parent | kbuild: check the minimum assembler version in Kconfig (diff) | |
| download | linux-2e98815794fb51250da4528f67fc2f699d5e3c37.tar.xz linux-2e98815794fb51250da4528f67fc2f699d5e3c37.zip | |
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.debug | 3 |
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 |