[Buildroot] [PATCH] toolchain-wrapper: do not use deprecated -mfused-madd
Arnout Vandecappelle
arnout at mind.be
Fri Aug 11 20:54:28 UTC 2017
On 11-08-17 20:11, Waldemar Brodkorb wrote:
> Hi Arnout,
> Arnout Vandecappelle wrote,
>
>>
>>
>> On 11-08-17 08:08, Thomas Petazzoni wrote:
>>> Hello,
>>>
>>> On Fri, 11 Aug 2017 07:28:48 +0200, Waldemar Brodkorb wrote:
>>>> GCC deprecated -mfused-madd, -ffp-contract=off should
>>>> be used for Xburst workaround.
>>>> uClibc compilations will fail, because a gcc warning
>>>> is emitted while checking for TLS support in the compiler.
>>>
>>> In which gcc version was -ffp-contract=off added ? Can we use that
>>> unconditionally, or is it only available in recent gcc versions ?
>>
>> And remember that we support GCC down to 4.3 in external toolchains...
>
> The usage for -ffp-contract=off is limited for MIPS32 xburst and
> I see only two external toolchains from 2016 for MIPS in
> make menuconfig...
There's also something called "Custom external toolchain", which could be
anything...
Regards,
Arnout
--
Arnout Vandecappelle arnout at mind be
Senior Embedded Software Architect +32-16-286500
Essensium/Mind http://www.mind.be
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