From 2e98815794fb51250da4528f67fc2f699d5e3c37 Mon Sep 17 00:00:00 2001 From: Masahiro Yamada Date: Tue, 16 Mar 2021 01:12:57 +0900 Subject: 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 Reviewed-by: Nathan Chancellor Reviewed-by: Nick Desaulniers --- lib/Kconfig.debug | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'lib') 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 -- cgit v1.2.3