[Buildroot] [PATCH] package/Makefile.in: Tweak TARGET_ABI for MPC8548

Andrey Smirnov andrew.smirnov at gmail.com
Fri Jul 14 21:18:25 UTC 2017


On Fri, Jul 14, 2017 at 3:59 PM, Thomas Petazzoni
<thomas.petazzoni at free-electrons.com> wrote:
> Hello,
>
> On Fri, 14 Jul 2017 14:47:15 -0500, Andrey Smirnov wrote:
>
>> It's been a while, since I investigated this patch, but I believe we
>> were seeing performance improvements on heavily numerical application
>> on our system with "-mhard-float" while using custom built
>> crosstools-ng e500 toolchain. But given how I didn't notice two
>> significant problems with this patch and it is clearly not ready for
>> prime time, let me go back and do more research/double check that I
>> wasn't doing something dumb and missing the obvious.
>>
>> I'll follow up with a separate patch if it's truly useful.
>
> I think it definitely makes sense to continue work on this patch.
> PowerPC is not the most well maintained architecture in Buildroot, so
> it's very good to get contributions from our PowerPC users to improve
> the support for this architecture.
>
> If indeed PowerPC needs an explicit -mhard-float to use the FPU, we'll
> have to fix Buildroot. Could you investigate this a little bit more?
>

Absolutely. Sorry for not being very clear, what I was trying to say
is: I just lost a bit of confidence that this patch is truly
needed(I've been confuse by simpler things before), so I'll go back
and investigate more to either build a better case for it or discover
what I missed.

Thanks,
Andrey Smirnov


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