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Date: Wed, 16 Mar 2011 15:09:25 -0700
From: Darren Hart <dvhart@linux.intel.com>
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Subject: Re: [PATCH A] n450: add optimization flags to gtk+ for n450 to avoid gcc core2 bug
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On 03/16/2011 02:49 PM, Darren Hart wrote:
>
> Fixes [YOCTO #853]
>
> Without these added optimization flags, the matchbox-panel (and possibly other)
> applications would segfault. This patch applies the change only to the gtk+
> recipe for the n450 bsp.
>
> Signed-off-by: Darren Hart<dvhart@linux.intel.com>
> CC: Ke Yu<ke.yu@intel.com>
> ---
>   meta-n450/recipes-gnome/gtk+/gtk+_2.22.1.bbappend |    2 ++
>   1 files changed, 2 insertions(+), 0 deletions(-)
>   create mode 100644 meta-n450/recipes-gnome/gtk+/gtk+_2.22.1.bbappend
>
> diff --git a/meta-n450/recipes-gnome/gtk+/gtk+_2.22.1.bbappend b/meta-n450/recipes-gnome/gtk+/gtk+_2.22.1.bbappend
> new file mode 100644
> index 0000000..3af4187
> --- /dev/null
> +++ b/meta-n450/recipes-gnome/gtk+/gtk+_2.22.1.bbappend
> @@ -0,0 +1,2 @@
> +#-fomit-frame-pointer in default FULL_OPTIMIZATION will cause matchbox-panel segfault on n450
> +FULL_OPTIMIZATION_n450 = "-fexpensive-optimizations -frename-registers -O2 -ggdb -feliminate-unused-debug-types"


Note that this patch only addresses the problem for the n450, and it 
would remain on the atom-pc. If we don't want to take Patch B, then we 
would need another solution for atom-pc. The only thing that comes to 
mind would be to add the above to the core gtk+ recipe in the form:

#-fomit-frame-pointer in default FULL_OPTIMIZATION will cause 
matchbox-panel segfault on atom-pc
FULL_OPTIMIZATION_atom-pc = "-fexpensive-optimizations 
-frename-registers -O2 -ggdb -feliminate-unused-debug-types"


Thoughts?

-- 
Darren Hart
Intel Open Source Technology Center
Yocto Project - Linux Kernel