On Friday 18 March 2016 14:16:23 Vineet Gupta wrote:
> diff --git a/arch/arc/Makefile b/arch/arc/Makefile
> index fed12f39d8ce..aeb101e8e674 100644
> --- a/arch/arc/Makefile
> +++ b/arch/arc/Makefile
> @@ -48,9 +48,14 @@ endif
> upto_gcc44 := $(call cc-ifversion, -le, 0404, y)
> atleast_gcc44 := $(call cc-ifversion, -ge, 0404, y)
> atleast_gcc48 := $(call cc-ifversion, -ge, 0408, y)
> +is_gcc48 := $(call cc-ifversion, -eq, 0408, y)
>
> cflags-$(atleast_gcc44) += -fsection-anchors
>
> +# gcc 4.8 spits out false positives for default -O3
> +# disable these for 4.8 and revisit when we upgrade to newer ver
> +cflags-$(is_gcc48) += $(call
> cc-disable-warning,maybe-uninitialized,)
> +
> cflags-$(CONFIG_ARC_HAS_LLSC) += -mlock
> cflags-$(CONFIG_ARC_HAS_SWAPE) += -mswape
Is this any better with gcc-4.9 or gcc-5? Maybe it's better to add the flag to
the line that adds -O3 for consistency. We do the same thing for -Os in the
global Makefile, as that triggers a similar load of warnings.
Arnd
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