This document decribes the CRAN-specific settings used to build the libraries using recipes, distributed at https://mac.R-project.org and used to build R and packages binaries on CRAN.
This build uses default settings to install to /usr/local and sudo to adjust permissions. It is recommended to set compilers to clang (i.e., CC=clang, CXX=clang++ etc.), but most libraries don't care as Xcode has symlinks from gcc to clang.
Binaries are distributed in https://mac.R-project.org/libs-4/
This build uses non-standard location (/opt/R/arm64) to avoid clashes with the libraries in /usr/local which often come from legacy Intel builds. Therefore the following settings are used to guarantee single-arch arm64 builds of the libraries which can co-exist with x86_64 binaries:
NOSUDO=1 PREFIX=opt/R/arm64 \
/Library/Frameworks/R.framework/Resources/bin/Rscript scripts/mkmk.R
NOSUDO=1 PREFIX=opt/R/arm64 PATH=/opt/R/arm64/bin:$PATH \
PKG_CONFIG_PATH=/opt/R/arm64/lib/pkgconfig:/usr/lib/pkgconfig \
CC='clang -arch arm64' CXX='clang++ -arch arm64' \
OBJC='clang -arch arm64' OBJCXX='clang++ -arch arm64' \
CPPFLAGS=-I/opt/R/arm64/include \
LDFLAGS=-L/opt/R/arm64/lib \
make -C build all
Note that /opt/R/arm64 is expected to exist and be writable by the user as the above does not use sudo to adjust permissions.
Binaries in https://mac.R-project.org/libs-arm64/
It is possible to generate a Makefile which downloads and installs binaries from the above builds instead of re-building them. This can be done by setting BINARY=1 environment variable when calling mkmk.R. Then running, for example, make cairo will download and install all libraries necessary to use cairo. The build is detected by the architecture of the machine used.