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Commit af0e5d56 authored Apr 21, 2011 by Dave Jones Committed by Michal Marek Apr 29, 2011

kbuild: Disable -Wunused-but-set-variable for gcc 4.6.0



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

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>

parent f0772604

Makefile

+4 −0

Original line number	Diff line number	Diff line
		@@ -567,6 +567,10 @@ ifndef CONFIG_CC_STACKPROTECTOR
		KBUILD_CFLAGS += $(call cc-option, -fno-stack-protector)
		endif

		# This warning generated too much noise in a regular build.
		# Use make W=1 to enable this warning (see scripts/Makefile.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

scripts/Makefile.build

+1 −0

Original line number	Diff line number	Diff line
		@@ -66,6 +66,7 @@ warning-1 += -Wmissing-format-attribute
		warning-1 += -Wmissing-prototypes
		warning-1 += -Wold-style-definition
		warning-1 += $(call cc-option, -Wmissing-include-dirs)
		warning-1 += $(call cc-option, -Wunused-but-set-variable)

		warning-2 := -Waggregate-return
		warning-2 += -Wcast-align