KBUILD_AFLAGS += -Wa,-gdwarf-2
endif
-ifdef CONFIG_DEBUG_INFO_DWARF4
-DEBUG_CFLAGS += -gdwarf-4
+ifndef CONFIG_DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT
+dwarf-version-$(CONFIG_DEBUG_INFO_DWARF4) := 4
+DEBUG_CFLAGS += -gdwarf-$(dwarf-version-y)
endif
ifdef CONFIG_DEBUG_INFO_REDUCED
to know about the .dwo files and include them.
Incompatible with older versions of ccache.
+choice
+ prompt "DWARF version"
+ help
+ Which version of DWARF debug info to emit.
+
+config DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT
+ bool "Rely on the toolchain's implicit default DWARF version"
+ help
+ The implicit default version of DWARF debug info produced by a
+ toolchain changes over time.
+
+ This can break consumers of the debug info that haven't upgraded to
+ support newer revisions, and prevent testing newer versions, but
+ those should be less common scenarios.
+
+ If unsure, say Y.
+
config DEBUG_INFO_DWARF4
- bool "Generate dwarf4 debuginfo"
+ bool "Generate DWARF Version 4 debuginfo"
help
- Generate dwarf4 debug info. This requires recent versions
- of gcc and gdb. It makes the debug information larger.
- But it significantly improves the success of resolving
- variables in gdb on optimized code.
+ Generate DWARF v4 debug info. This requires gcc 4.5+ and gdb 7.0+.
+
+ If you have consumers of DWARF debug info that are not ready for
+ newer revisions of DWARF, you may wish to choose this or have your
+ config select this.
+
+endchoice # "DWARF version"
config DEBUG_INFO_BTF
bool "Generate BTF typeinfo"