Enable "WIP: Wrap BLIS" with reference LAPACK

[jd-foster]

Based on #431, this demonstrates how to get the BLIS extension working using libblastrampoline combined with LAPACK_jll (based on Reference LAPACK 3.11 https://github.com/Reference-LAPACK/lapack/releases/tag/v3.11)

Note that suffix_hint="64_", in BLAS.lbt_forward enables ILP versions.

[jd-foster]

The MWE as it stands needs to include LAPACK_jll now:

using LinearSolve, blis_jll, LAPACK_jll

A = rand(4, 4)
b = rand(4)
prob = LinearProblem(A, b)
sol = solve(prob,LinearSolve.BLISLUFactorization())
sol.u

[ChrisRackauckas]

If you use LBT though then you're changing global settings.

[jd-foster]

I see now, you're trying to avoid LBT by going directly like you do with MKL?

LinearSolve.jl/src/mkl.jl

Line 7 in f5282e5

to avoid allocations and does not require libblastrampoline.

[ChrisRackauckas]

Yes, we'd prefer not to trigger global changes and instead be as local as possible.

[jd-foster]

We'll see if we can get JuliaPackaging/Yggdrasil#7660 done then.