Sorry JeanPaul,
your code is correct more or less, but the library you want compile is just a wrapper to call from C the BasicLinearAlgebraSubprogram library that is write in FORTRAN :cry:
The symbols you miss are from the real BLAS Fortran library, that is in fortran #-o
You cannot compile this unless you also build the fortran library (means you need also a fortran77 compiler). Maybe you can find a precompiled version somewhere...
Good luck