Dear Ron Shepard,
To my understanding the code is written in Fortran. The installed library
has passed all the recommended tests, as set by LAPACK mainainers:
https://fossies.org/linux/misc/lapack-3.9.0.tar.gz
The installation instructions for OSX 10.9, up to macOS Mojave, are here:
I see the same results on Cygwin as well (with a newer gfortran-10).
To create the static libraries, one has to download the latest tarball:
pc-rules-2021-03-05.tar.bz2