[R-SIG-Mac] Compiling BLAS with Accelerate

[Prof Brian Ripley]

On 29/11/2024 13:10, Tomek Gieorgijewski wrote:
> Hi!
> 
> I can compile R on macOS with standard BLAS
> but how can I compile R myself to get this vecLib BLAS
> which is added in binary distribution for Mac on CRAN?

Seems you have not read the R-admin manual.

The terms 'vecLib' (originally for PPC Macs) and 'Accelerate' are 
confusing: recent SDKs contain two different BLAS/LAPACK implementations 
under the name 'Accelerate', but neither are recent LAPACK nor pass 
checks cleanly.

If I wanted an enhanced BLAS on macOS I would use OpenBLAS, which in my 
tests on an M1 Pro was faster than even 'new' Accelerate and 'make 
check-all' passed cleanly. (Follow OpenBLAS's instructions to 
build/install it, R-admin's instructions to build R against.)

-- 
Brian D. Ripley,                  ripley using stats.ox.ac.uk
Emeritus Professor of Applied Statistics, University of Oxford