Avoid deprecated BLAS.vendor() in MKL conflict check (#950)

Patch as suggested by Carsten Bauer in #922.

GitHub: Fixes #922.

Co-authored-by: Mosè Giordano <[email protected]>

Author: dnadlinger

src/numpy.jl

@@ -64,8 +64,12 @@ function npyinitialize()
     numpy = pyimport("numpy")
 
     # emit a warning if both Julia and NumPy are linked with MKL (#433)
-    if LinearAlgebra.BLAS.vendor() === :mkl &&
-       LinearAlgebra.BLAS.BlasInt === Int64 && hasproperty(numpy, "__config__")
+    julia_mkl = @static if VERSION < v"1.7"
+        LinearAlgebra.BLAS.vendor() === :mkl
+    else
+        any(contains("mkl"), getfield.(LinearAlgebra.BLAS.get_config().loaded_libs, :libname))
+    end
+    if julia_mkl && LinearAlgebra.BLAS.BlasInt === Int64 && hasproperty(numpy, "__config__")
         config = numpy."__config__"
         if hasproperty(config, "blas_opt_info")
             blaslibs = get(config."blas_opt_info", Vector{String}, "libraries", String[])