Commit 9d937444 authored by Masahiro Yamada's avatar Masahiro Yamada
Browse files

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: default avatarMasahiro Yamada <yamada.masahiro@socionext.com>
parent 117948ac

Makefile

+2 −2
Original line number Diff line number Diff line
@@ -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

lib/Kconfig.debug

+2 −0
Original line number Diff line number Diff line
@@ -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.

CRA Git | Maintained and supported by SUSTech CRA and CCSE