[oe] [meta-java] gcc6 support breaks build for gcc < 6

[Otavio Salvador]

On Mon, Jul 11, 2016 at 11:24 AM, Khem Raj <raj.khem at gmail.com> wrote:
> On Mon, Jul 11, 2016 at 6:19 AM, Otavio Salvador
> <otavio.salvador at ossystems.com.br> wrote:
>> Hello Dobbe,
>>
>> (Added Khem and Fabio on Cc)
>>
>> On Mon, Jul 11, 2016 at 8:37 AM, Winfried <winfried_mb2 at xmsnet.nl> wrote:
>>> Commit  33ddb28a6428b02ddcc82d1954ecf27cd426fbb5 (openjdk-8: make GCC6
>>> happy) adds gcc option -fno-lifetime-dse, which was added in gcc6. This
>>> breaks the compilation of openjdk-native on hosts where gcc4 or gcc5 is the
>>> default compiler.
>>>
>>> If this is intentional, I think the README file should mention that
>>> meta-java requires gcc6. Better would be to add the '-fno-lifetime-dse'
>>> option only if gcc >= 6 is used for native compilation (if that is
>>> possible).
>>
>> This is a non-desired side effect of the patch. Daniel, could you take
>> a look on this?
>
> If you are not using default compiler then you have to take some action
>
> add
>
> CFLAGS_remove = " -fno-tree-dse"
> CXXFLAGS_remove = " -fno-tree-dse"
>
> via a .bbappend in your layer.

Khem, this is for /native/ so it uses hosts GCC.

-- 
Otavio Salvador                             O.S. Systems
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