[Mesa-stable] [PATCH] scons: update for LLVM 4.0

[Jose Fonseca]

Oh I see.  Yeah, that's fine then.

Jose

On 06/05/17 21:50, Chuck Atkins wrote:
> I think what Ben is pointing out is that this patch isn't changing the
> supported llvm version for Mesa, it's simply making sure that the
> versions supported by the scons build are correctly in sync with what
> the autoconf build already supports.
>
> On May 6, 2017 4:31 PM, "Jose Fonseca" <jfonseca at vmware.com
> <mailto:jfonseca at vmware.com>> wrote:
>
>     On 06/05/17 21:23, Ben Boeckel wrote:
>
>         On Sat, May 06, 2017 at 21:08:23 +0300, Andres Gomez wrote:
>
>             I'm not picking this for 17.0 since the changes that need
>             LLVM 4.0 are
>             only getting into 17.1 and beyond, and because, IMHO, it
>             doesn't make
>             sense to increase the version of a dependency in a stable
>             release.
>
>             I hope that's OK with you.
>
>
>         This isn't increasing the version of a dependency, it is just
>         supporting
>         a newer version of that dependency (which is already supported
>         in the
>         autoconf build).
>
>         --Ben
>
>
>     Unfortunately things often get broken with newer LLVM versions.
>     Especially because LLVM does not always keep backwards
>     compatibility. Fixing the build is just scratching the surface.
>
>     This is why we avoid backporting support for newer LLVM versions on
>     old stable branches.  Even if we crossported every little change
>     that's necessary, there's not enough testing going on those branches
>     to be sure things didn't go awfully wrong.
>
>     This policy shouldn't be a problem in practice: if people are
>     determined to use a newer LLVM, then using a newer Mesa shouldn't be
>     particularly onerous.
>
>     Jose
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