[PATCH] [CMake/PPC64]: Add -mminimal-toc to CFLAGS if compiler is gcc < 4.6 on powerpc64

[Kai Nacke]

Hi Richard!

I am using REHL6 (gcc 4.4.x) and Gentoo (gcc 4.5.x). In Gentoo, gcc >= 
4.6 is available but marked as unstable.

Regards
Kai

On 06.06.2013 10:19, Richard Sandiford wrote:
> Hi Kai,
>
> Kai Nacke <kai.nacke at redstar.de> writes:
>> On 01.06.2013 21:17, Kai Nacke wrote:
>>> Hi!
>>>
>>> To compile LLVM with gcc < 4.6 on a powerpc64 platform you have to add
>>> -mminimal-toc to CFLAGS / CXXFLAGS. Otherwise you get strange linker
>>> errors.
>
> Just wondering, are you using Darwin?  In theory, this ought to have been
> fixed for GNU/Linux in 4.2, but the fix was only ported to Darwin for 4.6.
>
> Either way, I imagine most GNU/Linux users compiling 3.4 LLVM would be
> using gcc >= 4.6 anyway, so the check looks reasonable to me.  I'm no
> powerpc or cmake expert though, so that can't really count as a review...
>
> Thanks,
> Richard
>
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