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authorAndi Kleen <ak@linux.intel.com>2014-07-30 20:50:19 +0200
committerMichal Marek <mmarek@suse.cz>2014-07-30 22:56:04 +0200
commitbfaf2dd3509bc73bf4a4cea0e72472755ed860e2 (patch)
treee7ceb98352696ee3aa373a7559227a361983f31c /Makefile
parent866ced950bcd54820c3e571229356adc2b2dd72e (diff)
downloadlinux-linaro-stable-bfaf2dd3509bc73bf4a4cea0e72472755ed860e2.tar.gz
Kbuild: Add a option to enable dwarf4 v2
I found that a lot of unresolvable variables when using gdb on the kernel become resolvable when dwarf4 is enabled. So add a Kconfig flag to enable it. It definitely increases the debug information size, but on the other hand this isn't so bad when debug fusion is used. v2: Use cc-option Signed-off-by: Andi Kleen <ak@linux.intel.com> Acked-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Michal Marek <mmarek@suse.cz>
Diffstat (limited to 'Makefile')
-rw-r--r--Makefile3
1 files changed, 3 insertions, 0 deletions
diff --git a/Makefile b/Makefile
index e5a269465f99..2fd21a58f5cf 100644
--- a/Makefile
+++ b/Makefile
@@ -691,6 +691,9 @@ KBUILD_CFLAGS += -g
endif
KBUILD_AFLAGS += -Wa,-gdwarf-2
endif
+ifdef CONFIG_DEBUG_INFO_DWARF4
+KBUILD_CFLAGS += $(call cc-option, -gdwarf-4,)
+endif
ifdef CONFIG_DEBUG_INFO_REDUCED
KBUILD_CFLAGS += $(call cc-option, -femit-struct-debug-baseonly) \