Link the LAPACK and BLAS libraries of R — use_rzig

Adds Config/rzig/lapack: true to DESCRIPTION. The generated configure then links $(LAPACK_LIBS) $(BLAS_LIBS) $(FLIBS), the libraries that rzig.Blas and rzig.Lapack call, in the order Writing R Extensions asks for. $(FLIBS) is the Fortran runtime of R: on macOS, installing such a package from source needs the gfortran that CRAN's R builds use (https://mac.r-project.org/tools/), on Windows it comes with Rtools.

Usage

use_rzig_lapack(path)

Arguments

path: Path to a package previously initialized with use_rzig().

Value

The path of DESCRIPTION, invisibly.

Examples

package_path <- tempfile("rzig-lapack-", tmpdir = tempdir())
dir.create(package_path)
writeLines(c("Package: examplepkg", "Version: 0.0.1"),
  file.path(package_path, "DESCRIPTION"))
use_rzig(package_path)
#> Generated RZig bindings for examplepkg: 1 exported function
#> Created RZig scaffold for package examplepkg
use_rzig_lapack(package_path)
#> Package examplepkg links the LAPACK and BLAS of R
read.dcf(file.path(package_path, "DESCRIPTION"), fields = "Config/rzig/lapack")
#>      Config/rzig/lapack
#> [1,] "true"            
unlink(package_path, recursive = TRUE)