Compiling problems with Vc

[Boudewijn Rempt]

Right now, Krita only builds with Vc 0.7. There is a branch which
makes Krita build with 1.x, but that is not merged yet because
there were reports of performance regressions. The merge'll happen
after we release Krita 3.0.

On Sun, 15 May 2016, Sven Claussner wrote:

> Hi,
>
> having a look at Krita I'm quite impressed by its useful capabilities -
> thank you for your work!
>
> Now I'm digging a bit into the code.
> I'm currently building Krita on Debian Testing which has
> no packages for the Vc lib. Therefore I pulled my own copy from
> https://github.com/VcDevel/Vc and have built it successfully into
> Krita's prefix.
>
> Krita's cmake detects it, but the compiler fails at
> libs/pigment/compositeops/KoVcMultiArchBuildSupport.h .
> It tells me that VC_VERSION_NUMBER is not found (see line 93)
> and breaks.
> Looking into $krita_prefix/include/Vc/version.h I see the compiler
> variables names begin with Vc_ now, see also this commit in the Vc repo:
> https://github.com/VcDevel/Vc/commit/ed3869b789f4dc5dc3e995b2fde4ceef2054327a
> dating from 20.10.2015.
>
> I'm wondering what would be the right way to solve this.
> Compiler variables with lowercase letters look a bit odd to me,
> aren't they? On the other hand I wonder that this issue hasn't
> popped up earlier. Does building Krita require a particular Vc version?
>
> Thank you in advance,
>
>
> Sven
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-- 
Boudewijn Rempt | http://www.krita.org, http://www.valdyas.org