[tip:perf/core] tools lib lk: Fix _FORTIFY_SOURCE builds

From: tip-bot for Borislav Petkov
Date: Thu Mar 21 2013 - 07:05:44 EST

Commit-ID: b28b130719af6e7f56e0bbdac38ba703a36ba5d5
Gitweb: http://git.kernel.org/tip/b28b130719af6e7f56e0bbdac38ba703a36ba5d5
Author: Borislav Petkov <bp@xxxxxxx>
AuthorDate: Sun, 3 Mar 2013 20:25:33 +0100
Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Fri, 15 Mar 2013 13:06:01 -0300

tools lib lk: Fix _FORTIFY_SOURCE builds

Jiri Olsa triggers the following build error:

SUBDIR ../lib/lk/
CC debugfs.o
In file included from /usr/include/errno.h:29:0,
from debugfs.c:1:
/usr/include/features.h:314:4: error: #warning _FORTIFY_SOURCE requires compiling with optimization (-O) [-Werror=cpp]

This is because enabling buffer overflow checks through _FORTIFY_SOURCE
require compiler optimizations to be enabled too. However, those are
not. Enable them by simply copying the perf optimization level. It can
be expanded later if we want to support debug builds, etc.

Signed-off-by: Borislav Petkov <bp@xxxxxxx>
Reported-by: Jiri Olsa <jolsa@xxxxxxxxxx>
Link: http://lkml.kernel.org/r/1362338733-8718-1-git-send-email-bp@xxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
tools/lib/lk/Makefile | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/lib/lk/Makefile b/tools/lib/lk/Makefile
index 8cf576f..926cbf3 100644
--- a/tools/lib/lk/Makefile
+++ b/tools/lib/lk/Makefile
@@ -10,7 +10,7 @@ LIB_OBJS += $(OUTPUT)debugfs.o

LIBFILE = liblk.a

-CFLAGS = -ggdb3 -Wall -Wextra -std=gnu99 -Werror $(CFLAGS_OPTIMIZE) -D_FORTIFY_SOURCE=2 $(EXTRA_WARNINGS) $(EXTRA_CFLAGS) -fPIC
+CFLAGS = -ggdb3 -Wall -Wextra -std=gnu99 -Werror -O6 -D_FORTIFY_SOURCE=2 $(EXTRA_WARNINGS) $(EXTRA_CFLAGS) -fPIC
EXTLIBS = -lpthread -lrt -lelf -lm
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