Make MKL check to be fully static

Fixes #787

Author: ChrisRackauckas

src/mkl.jl

@@ -9,13 +9,13 @@ to avoid allocations and does not require libblastrampoline.
 struct MKLLUFactorization <: AbstractFactorization end
 
 # Check if MKL is available
-@static if !@isdefined(MKL_jll)
+# MKL_jll < 2022.2 doesn't support the mixed LP64 and ILP64 interfaces that we make use of in LinearSolve
+# In particular, the `_64` APIs do not exist
+# https://www.intel.com/content/www/us/en/developer/articles/release-notes/onemkl-release-notes-2022.html
+@static if !@isdefined(MKL_jll) || !MKL_jll.is_available() || pkgversion(MKL_jll) >= v"2022.2"
     __mkl_isavailable() = false
 else
-    # MKL_jll < 2022.2 doesn't support the mixed LP64 and ILP64 interfaces that we make use of in LinearSolve
-    # In particular, the `_64` APIs do not exist
-    # https://www.intel.com/content/www/us/en/developer/articles/release-notes/onemkl-release-notes-2022.html
-    __mkl_isavailable() = MKL_jll.is_available() && pkgversion(MKL_jll) >= v"2022.2"
+    __mkl_isavailable() = true
 end
 
 function getrf!(A::AbstractMatrix{<:ComplexF64};