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@@ -3,3 +3,13 @@ large scale eigenvalue problems.
This is a fork of ARPACK that is actively maintained. As such, this
package will conflict with the ARPACK package. Do not install both.
+
+This requires a BLAS/LAPACK implementation. Choose one of these package sets:
+* OpenBLAS (includes a LAPACK implementation)
+* atlas, lapack-atlas
+* blas, lapack (the Netlib reference implementations)
+If more than one set is installed (assuming there are no packaging conflicts)
+then the auto-detection will use the first implementation from this list that
+it finds. If in doubt, choose the Netlib reference implementations; other
+packages that require a BLAS or LAPACK implementation may not build if they
+are not configured to detect/use alternate implementations.