[R-SIG-Mac] vecLib BLAS and LAPACK on Mac OS 11.01 and Xcode 12.2

Hi, I am having trouble using vecLib BLAS and LAPACK libraries in R 4.0.3 Patched (2020-11-20 r79454) on Mac OS 11.0.1 and Xcode 12.2. For several years, I have been compiling R from source on the same computer. Most recently, I compiled R from source on Mac OS 10.15.7 and Xcode 11.5. As give

Re: [R-SIG-Mac] Apple Silicon aka M1 Macs

Creating a native Aarch64 build of R on my M1 machine was surprisingly straightforward. Here is a step-by-step instruction of what I did in case someone wants to replicate it: 1. Install native homebrew as described in this blog post under “Multiple Homebrews” (https://soffes.blog/homebrew-on-a