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authorMasahiro Yamada2019-02-22 08:56:09 +0100
committerMasahiro Yamada2019-02-28 14:50:55 +0100
commit9d9374440072eb0acf2070b45229ef64c3e04d27 (patch)
tree4f4bd3701746d62ba9795c3e6e3ba40bb3a306f7
parentkbuild: [bin]deb-pkg: add DPKG_FLAGS variable (diff)
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kbuild: move -gsplit-dwarf, -gdwarf-4 option tests to Kconfig
CONFIG_DEBUG_INFO_SPLIT and CONFIG_DEBUG_INFO_DWARF4 enable extra dwarf options if supported. You never know if they are really enabled since Makefile may silently turn them off. The actual behavior will match to the kernel configuration by testing those compiler flags in the Kconfig stage. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
-rw-r--r--Makefile4
-rw-r--r--lib/Kconfig.debug2
2 files changed, 4 insertions, 2 deletions
diff --git a/Makefile b/Makefile
index 0e1f6c3f00a2..38c0101d730c 100644
--- a/Makefile
+++ b/Makefile
@@ -742,14 +742,14 @@ DEBUG_CFLAGS := $(call cc-option, -fno-var-tracking-assignments)
ifdef CONFIG_DEBUG_INFO
ifdef CONFIG_DEBUG_INFO_SPLIT
-DEBUG_CFLAGS += $(call cc-option, -gsplit-dwarf, -g)
+DEBUG_CFLAGS += -gsplit-dwarf
else
DEBUG_CFLAGS += -g
endif
KBUILD_AFLAGS += -Wa,-gdwarf-2
endif
ifdef CONFIG_DEBUG_INFO_DWARF4
-DEBUG_CFLAGS += $(call cc-option, -gdwarf-4,)
+DEBUG_CFLAGS += -gdwarf-4
endif
ifdef CONFIG_DEBUG_INFO_REDUCED
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index d4df5b24d75e..dfc9949b6abe 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -179,6 +179,7 @@ config DEBUG_INFO_REDUCED
config DEBUG_INFO_SPLIT
bool "Produce split debuginfo in .dwo files"
depends on DEBUG_INFO
+ depends on $(cc-option,-gsplit-dwarf)
help
Generate debug info into separate .dwo files. This significantly
reduces the build directory size for builds with DEBUG_INFO,
@@ -194,6 +195,7 @@ config DEBUG_INFO_SPLIT
config DEBUG_INFO_DWARF4
bool "Generate dwarf4 debuginfo"
depends on DEBUG_INFO
+ depends on $(cc-option,-gdwarf-4)
help
Generate dwarf4 debug info. This requires recent versions
of gcc and gdb. It makes the debug information larger.