[PATCH 87/91] kbuild: Disable -Wunused-but-set-variable for gcc 4.6.0

From: Willy Tarreau
Date: Sun Feb 05 2012 - 17:30:31 EST

2.6.27-longterm review patch. If anyone has any objections, please let us know.


commit af0e5d565d2fffcd97d1e2d89669d627cc04e8b8 upstream.

Disable the new -Wunused-but-set-variable that was added in gcc 4.6.0
It produces more false positives than useful warnings.

This can still be enabled using W=1
[gregkh - No it can not for 2.6.32, but we don't care]

Signed-off-by: Dave Jones <davej@xxxxxxxxxx>
Acked-by: Sam Ravnborg <sam@xxxxxxxxxxxx>
Tested-by: Sam Ravnborg <sam@xxxxxxxxxxxx>
Signed-off-by: Michal Marek <mmarek@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>
Makefile | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)

Index: longterm-2.6.27/Makefile
--- longterm-2.6.27.orig/Makefile 2012-02-05 22:34:32.306915729 +0100
+++ longterm-2.6.27/Makefile 2012-02-05 22:34:47.271916824 +0100
@@ -530,6 +530,9 @@
# Arch Makefiles may override this setting
KBUILD_CFLAGS += $(call cc-option, -fno-stack-protector)

+# This warning generated too much noise in a regular build.
+KBUILD_CFLAGS += $(call cc-option, -Wno-unused-but-set-variable)
KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls

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