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authorNick Desaulniers <ndesaulniers@google.com>2022-09-19 20:30:30 +0300
committerMasahiro Yamada <masahiroy@kernel.org>2022-09-24 05:12:54 +0300
commit61f2b7c7497ba96cdde5bbaeb9e07f4c48f41f97 (patch)
tree23ca667066995126eef4ccc5288c58445acbb3fb /scripts/Makefile.debug
parent2154aca21408752eaa3eeaf2ba6e942724ff2a4d (diff)
downloadlinux-61f2b7c7497ba96cdde5bbaeb9e07f4c48f41f97.tar.xz
Makefile.debug: set -g unconditional on CONFIG_DEBUG_INFO_SPLIT
Dmitrii, Fangrui, and Mashahiro note: Before GCC 11 and Clang 12 -gsplit-dwarf implicitly uses -g2. Fix CONFIG_DEBUG_INFO_SPLIT for gcc-11+ & clang-12+ which now need -g specified in order for -gsplit-dwarf to work at all. -gsplit-dwarf has been mutually exclusive with -g since support for CONFIG_DEBUG_INFO_SPLIT was introduced in commit 866ced950bcd ("kbuild: Support split debug info v4") I don't think it ever needed to be. Link: https://lore.kernel.org/lkml/20220815013317.26121-1-dmitrii.bundin.a@gmail.com/ Link: https://lore.kernel.org/lkml/CAK7LNARPAmsJD5XKAw7m_X2g7Fi-CAAsWDQiP7+ANBjkg7R7ng@mail.gmail.com/ Link: https://reviews.llvm.org/D80391 Cc: Andi Kleen <ak@linux.intel.com> Reported-by: Dmitrii Bundin <dmitrii.bundin.a@gmail.com> Reported-by: Fangrui Song <maskray@google.com> Reported-by: Masahiro Yamada <masahiroy@kernel.org> Suggested-by: Dmitrii Bundin <dmitrii.bundin.a@gmail.com> Reviewed-by: Nathan Chancellor <nathan@kernel.org> Signed-off-by: Nick Desaulniers <ndesaulniers@google.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Diffstat (limited to 'scripts/Makefile.debug')
-rw-r--r--scripts/Makefile.debug4
1 files changed, 1 insertions, 3 deletions
diff --git a/scripts/Makefile.debug b/scripts/Makefile.debug
index 9f39b0130551..26d6a9d97a20 100644
--- a/scripts/Makefile.debug
+++ b/scripts/Makefile.debug
@@ -1,9 +1,7 @@
-DEBUG_CFLAGS :=
+DEBUG_CFLAGS := -g
ifdef CONFIG_DEBUG_INFO_SPLIT
DEBUG_CFLAGS += -gsplit-dwarf
-else
-DEBUG_CFLAGS += -g
endif
ifndef CONFIG_AS_IS_LLVM