Naresh, Both of those can only be FALSE by definition:
1) arm64 hardware (Apple Silicon, i.e M1,2,3,4) has no support for long doubles, so you cannot enable that one. 2) libxml is always FALSE since 4.2.0 - see ?capabilities: libxml: is there support for integrating ‘libxml’ with the R event loop? ‘TRUE’ as from R 3.3.0, ‘FALSE’ as from R 4.2.0. Cheers, Simon PS: what you described in "My installation was in two steps” has no effect on R or its capabilities. Those steps are only required if you want to compile R yourself (or re-compile some packages). > On 24/10/2025, at 10:35 AM, Naresh Gurbuxani <[email protected]> > wrote: > > On my new macbook pro, I installed R using package installer R-4.5.1-arm64.pkg > My installation lacks long.double and libxml capabilities. How can these be > enabled? > > My installation was in two steps: > 1. Install Xcode developer tools (sudo xcode-select install), GNU fortran > compiler (gfortran-14.2-universal.pkg at cran), gnu readline, liblzma, and > pcre2 (using macports), texlive, and Xquartz. Install R using above package > installer. > 2. Source install.R from https://mac.r-project.org/bin/. In sudo R session, > run install.libs("r-base-dev"). Reinstall R using above package installer. > >> capabilities() > jpeg png tiff tcltk X11 aqua > TRUE TRUE TRUE TRUE TRUE TRUE > http/ftp sockets libxml fifo cledit iconv > TRUE TRUE FALSE TRUE TRUE TRUE > NLS Rprof profmem cairo ICU long.double > TRUE TRUE TRUE TRUE TRUE FALSE > libcurl > TRUE >> sessionInfo() > R version 4.5.1 (2025-06-13) > Platform: aarch64-apple-darwin20 > Running under: macOS Sequoia 15.4.1 > > Matrix products: default > BLAS: > /Library/Frameworks/R.framework/Versions/4.5-arm64/Resources/lib/libRblas.0.dylib > LAPACK: > /Library/Frameworks/R.framework/Versions/4.5-arm64/Resources/lib/libRlapack.dylib; > LAPACK version 3.12.1 > > locale: > [1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8 > > time zone: America/New_York > tzcode source: internal > > attached base packages: > [1] stats graphics utils datasets grDevices methods base > > other attached packages: > [1] latticeExtra_0.6-31 lattice_0.22-7 colorspace_2.1-2 > > loaded via a namespace (and not attached): > [1] compiler_4.5.1 deldir_2.0-4 RColorBrewer_1.1-3 Rcpp_1.1.0 > [5] interp_1.1-6 jpeg_0.1-11 grid_4.5.1 png_0.1-8 >> > > nareshgurbuxani$ gfortran --version > GNU Fortran (GCC) 14.2.0 > Copyright (C) 2024 Free Software Foundation, Inc. > This is free software; see the source for copying conditions. There is NO > warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. > > [[alternative HTML version deleted]] > > _______________________________________________ > R-SIG-Mac mailing list > [email protected] > https://stat.ethz.ch/mailman/listinfo/r-sig-mac > _______________________________________________ R-SIG-Mac mailing list [email protected] https://stat.ethz.ch/mailman/listinfo/r-sig-mac
