macrtools v0.0.7 Released - R 4.6 Support and OpenMP Runtime Update

macrtools v0.0.7 adds support for R 4.6.0 on macOS and updates the bundled LLVM OpenMP runtime to 19.1.5.
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Author

James Balamuta

Published

June 23, 2026

The macrtools (Website) package sets up the macOS R compiled code toolchain from within R. This release adds support for R 4.6.0 on macOS and refreshes the bundled LLVM OpenMP runtime. On Apple Silicon, R 4.6 now installs the recipes binaries from the new darwin23/arm64 repository automatically, installing to the same /opt/R/arm64 prefix as before, so no path changes are required.

For details on the changes, please see the news entry for the package update below.

macrtools news file entry for version v0.0.7

Features

  • Added support for R 4.6.0 on macOS.
    • gfortran continues to use the universal GNU Fortran 14.2 installer (unchanged from R 4.5).
    • On Apple Silicon, R 4.6 (macOS 14 Sonoma and higher) installs the recipes binaries from the new darwin23/arm64 repository. The repository is detected automatically and installs to the same /opt/R/arm64 prefix as before, so no path changes are required.
  • Updated the bundled LLVM OpenMP runtime from 19.1.0 to 19.1.5 to match the current release on https://mac.r-project.org/openmp/. The 19.1.x runtime covers Apple clang 1700.x and up (Xcode 16.3 through Xcode 26.x, the R 4.6 Apple Silicon toolchain), so existing systems remain correctly matched.

Internal

  • Centralized the supported R version window behind minimum_supported_r_version() / maximum_supported_r_version() and replaced the repeated is_r_version("4.x") || ... chains with range checks (is_r_version_at_least(), is_r_version_supported()). Supporting a future R release that keeps the existing toolchain is now a one-line change.
  • gfortran_update() now requires “R 4.2 or above” (matching its documentation) rather than an explicit, hard-coded list of versions.

GitHub Changelog