Messages in this thread Patch in this message | | | From | Andi Kleen <> | Subject | [PATCH] [1/98] kbuild: Disable -Wunused-but-set-variable for gcc 4.6.0 | Date | Tue, 26 Jul 2011 17:34:53 -0700 (PDT) |
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2.6.35-longterm review patch. If anyone has any objections, please let me know.
------------------ From: Dave Jones <davej@redhat.com>
[ upstream commit af0e5d565d2fffcd97d1e2d89669d627cc04e8b8 ]
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
[AK: dropped W=1 support in backport] Signed-off-by: Dave Jones <davej@redhat.com> Acked-by: Sam Ravnborg <sam@ravnborg.org> Tested-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Michal Marek <mmarek@suse.cz> Signed-off-by: Andi Kleen <ak@linux.intel.com>
Index: linux-2.6.35.y/Makefile =================================================================== --- linux-2.6.35.y.orig/Makefile +++ linux-2.6.35.y/Makefile @@ -546,6 +546,9 @@ ifndef CONFIG_CC_STACKPROTECTOR KBUILD_CFLAGS += $(call cc-option, -fno-stack-protector) endif +# This warning generated too much noise in a regular build. +KBUILD_CFLAGS += $(call cc-option, -Wno-unused-but-set-variable) + ifdef CONFIG_FRAME_POINTER KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls else
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