[tip:core/objtool] objtool: Compile with debugging symbols

From: tip-bot for Josh Poimboeuf
Date: Wed Mar 09 2016 - 06:45:07 EST

Commit-ID: d435fb5ef74c31909ca58f93aa87ad09b17bbe9a
Gitweb: http://git.kernel.org/tip/d435fb5ef74c31909ca58f93aa87ad09b17bbe9a
Author: Josh Poimboeuf <jpoimboe@xxxxxxxxxx>
AuthorDate: Wed, 9 Mar 2016 00:06:53 -0600
Committer: Ingo Molnar <mingo@xxxxxxxxxx>
CommitDate: Wed, 9 Mar 2016 10:48:08 +0100

objtool: Compile with debugging symbols

Compile objtool with debugging symbols ('-g') to help tools like perf
and gdb understand what it's doing. Combined with '-O2', it's not
always helpful, but it's better than nothing.

Reported-by: Ingo Molnar <mingo@xxxxxxxxxx>
Signed-off-by: Josh Poimboeuf <jpoimboe@xxxxxxxxxx>
Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: Andy Lutomirski <luto@xxxxxxxxxx>
Cc: Arnaldo Carvalho de Melo <acme@xxxxxxxxxxxxx>
Cc: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
Cc: Bernd Petrovitsch <bernd@xxxxxxxxxxxxxxxxxxx>
Cc: Borislav Petkov <bp@xxxxxxxxx>
Cc: Chris J Arges <chris.j.arges@xxxxxxxxxxxxx>
Cc: Jiri Slaby <jslaby@xxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Michal Marek <mmarek@xxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxx>
Cc: Pedro Alves <palves@xxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: live-patching@xxxxxxxxxxxxxxx
Link: http://lkml.kernel.org/r/c295e9ee9ed360dc8b2e1d180c859f11cfc151ef.1457502970.git.jpoimboe@xxxxxxxxxx
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
tools/objtool/Makefile | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/objtool/Makefile b/tools/objtool/Makefile
index e4a6bd5..6765c7e 100644
--- a/tools/objtool/Makefile
+++ b/tools/objtool/Makefile
@@ -27,7 +27,7 @@ OBJTOOL_IN := $(OBJTOOL)-in.o
all: $(OBJTOOL)

INCLUDES := -I$(srctree)/tools/include
-CFLAGS += -Wall -Werror $(EXTRA_WARNINGS) -fomit-frame-pointer -O2 $(INCLUDES)
+CFLAGS += -Wall -Werror $(EXTRA_WARNINGS) -fomit-frame-pointer -O2 -g $(INCLUDES)

AWK = awk