Naras,
sorry, but since this involves some Rust code, I fear that you'll have to
discuss it with Brian directly. FWIW on the CRAN M1 build machine it seems to
use the correct flags:
$ grep fortran/lib
/Volumes/Builds/packages/big-sur-arm64/results/4.5/clarabel.Rcheck/00install.out
clang -arc
I got the note below from Prof. Ripley on my package 'clarabel' failing
M1mac checks.
This puzzles me because I am using FLIBS determined via`R CMD config
FLIBS` using the crate I wrote for this very purpose
(https://github.com/blas-lapack-rs/r-src/blob/966266425b1a21a1e979f767c6023e6bf00616fc/