mesa-libs problem with llvm50

[Stari Karp]

On Wed, 2018-01-03 at 21:34 -0800, John Kennedy wrote:
> Ever since llvm50 started getting included (vs llvm40), I've had this
> problem
> building mesa-libs.  Initially I was running 11.1-p6, but there was a
> lot of
> llvm40 output initially (from base OS, presumably), so today I tried
> against
> stable/11 since it has llvm 5.0 in base.
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I didn't have problem to built but my Blender stopped woto wok after
llvm50 was installed.
After Mr. Jan Beich suggestion I put MESA_LLVM_VER=40 in
/etc/make.conf, rebuilt mesa-dri and BBlender works again. I DEINSTALL
llvm50.