DOES LAPACK INCLUDE THE BLAS .
On Cygwin, yes and no.
If you want the short answer: yes.
A line like:
g77 myprogram.f -llapack
So on some sense you have BLAS and LAPACK at once.
But hopefully no... The two libraries are still distinct. The idea is that you want to plug any BLAS behind LAPACK. So a LAPACK library should not include a BLAS library inside it. I do not know all the details on how the cygwin guys have done it but I think this is ok.