support julia 1.6 LTS

Author: bjarthur

Project.toml

@@ -7,4 +7,4 @@ version = "0.1.1"
 LinearAlgebra = "37e2e46d-f89d-539d-b4ee-838fcccc9c8e"
 
 [compat]
-julia = "1.7"
+julia = "1.6"

src/blas.jl

@@ -1,7 +1,15 @@
-import LinearAlgebra.BLAS: libblastrampoline, @blasfunc, BlasInt, BlasReal
+import LinearAlgebra.BLAS: @blasfunc, BlasInt, BlasReal
 
 export spr!
 
+@static if VERSION < v"1.7-"
+    import LinearAlgebra.BLAS: libblas
+    thislib = libblas
+else
+    import LinearAlgebra.BLAS: libblastrampoline
+    thislib = libblastrampoline
+end
+
 for (fname, elty) in ((:dspr_, :Float64),
                       (:sspr_, :Float32))
     @eval begin
@@ -12,7 +20,7 @@ for (fname, elty) in ((:dspr_, :Float64),
                       incx::Integer,
                       AP::Union{Ptr{$elty}, AbstractArray{$elty}})
 
-            ccall((@blasfunc($fname), libblastrampoline), Cvoid,
+            ccall((@blasfunc($fname), thislib), Cvoid,
                   (Ref{UInt8},     # uplo,
                    Ref{BlasInt},   # n,
                    Ref{$elty},     # α,