What exactly are these libraries? Is -lblas part of the standard OS development system, or is it something that you installed separately? If a separate install, is the code written in C or fortran?
Is -lrefblas compiled from the fortran code from netlib?
So far, it seems that all of the various libraries that have these single-precision errors are written in C, not fortran, and the return type errors trace back to the f2c compiler and to the K&R C convention of promoting float to double.