Hi,
There was a discussion few months ago where the problem
of single precision f2cblas routines returning double precision
values was fixed by creating a new f2cblaslapack package.
However, the maint branch still uses f2cblaslapack-3.1.1.q.tar.gz
where the signature is wrong: doublereal sdot_ and all that.
The fix is in master, which uses f2cblaslapack-3.4.1.q.tar.gz.
Perhaps maint should be updated?
Chetan