[oe] [RFT] GCC 6 Recipes

[Khem Raj]

On Thu, Apr 28, 2016 at 4:24 AM, Carlos Rafael Giani
<dv at pseudoterminal.org> wrote:
> Something that concerns me is a note from
> https://gcc.gnu.org/gcc-6/changes.html :
>
> "Value range propagation now assumes that the this pointer of C++ member
> functions is non-null. This eliminates common null pointer checks but also
> breaks some non-conforming code-bases (such as Qt-5, Chromium, KDevelop). As
> a temporary work-around -fno-delete-null-pointer-checks can be used. Wrong
> code can be identified by using -fsanitize=undefined."
>
> Sounds like this has potential to break a significant number of packages.

Thanks for bringing it up.
it could but then these need/will be fixed in due course. I would not
recommend changing  OE wide
compiler defaults for few apps. The relevant fix can be applied per
recipe if needed

>
>
> On 04/18/2016 07:15 AM, Khem Raj wrote:
>>
>> Hello all,
>>
>> I have put together a potential gcc6 upgrade recipe set, and pushed the
>> branch to tree here
>>
>>
>> http://git.openembedded.org/openembedded-core-contrib/log/?h=kraj/gcc-6
>>
>> and also at github fork of mine.
>>
>> https://github.com/kraj/openembedded-core/tree/kraj/master
>>
>> You need to set
>>
>> GCCVERSION = “6.%”
>>
>> in local.conf to enable it.
>>
>>
>> There are few recipes in OE-Core which still don’t compile e.g.
>>
>> see
>>
>> http://errors.yoctoproject.org/Errors/Build/14782/
>>
>> any help in fixing them or otherwise fixing other layers is appreciated.
>>
>> gcc6 is a major release for some info see
>>
>> https://gcc.gnu.org/gcc-6/changes.html
>>
>> and porting guide
>>
>> https://gcc.gnu.org/gcc-6/porting_to.html
>>
>>
>> Thanks
>>
>> -Khem
>>
>>
>
> --
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