You will have to rebuild it from source with compilers that support
those items. I'm not sure why libxml is missing, but long.double is
missing because the Apple silicon doesn't natively support it, and the
compiler that R Core uses doesn't emulate it, or the emulation it offers
is not worth using.
Maybe someone more knowledgeable than me can tell you whether this is
feasible or not. I trust Simon's decisions, so I'm pretty sure it's not
desirable.
Duncan Murdoch
On 2025-10-23 5:35 p.m., Naresh Gurbuxani 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.
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