mesa-dri uses llvm60

[Robert Huff]

Andreas Nilsson writes:

>  On Sat, Jan 12, 2019 at 5:25 PM Daniel Eischen <deischen at freebsd.org> wrote:
  
>   >      Just thinking out loud, can the missing llvm bits be a port,
>   >      such that building the missing pieces use what's already
>   >      in base?
>  
>  It probably could, at least technically. But it would probably not
>  be a good idea, having some bits in / and some bits in
>  /usr/local. Also, if a newer mesa-dri would depend on a newer llvm
>  than whats in base, that would prohibit any update to mesa-dri.

	Could it be an _optional_ part of base, perhaps controlled by
"WITH_LLVM_EXTRAS=yes" in src.conf?


			Curiously,

				Robert Huff