Install issue - splitting "Application Support" path to RcppParallel

Summary:

clang error when installing rstanarm. Path to RcppParallel is not being shell escaped and is being split at space in "Application Support".

Description:

I'm trying to install rstanarm on an arm64 Mac and am getting the error,

clang: error: no such file or directory: 'Support/renv/cache/v5/R-4.2/aarch64-apple-darwin21.6.0/RcppParallel/5.1.5/f3e94e34ff656a7c8336ce01207bc2b8/RcppParallel/include''
make: *** [stan_files/bernoulli.o] Error 1
rm stan_files/bernoulli.cc
ERROR: compilation failed for package ‘rstanarm’

The path should be ~/Library/Application Support/renv/cache/v5/R-4.2/aarch64-apple-darwin21.6.0/RcppParallel/5.1.5/f3e94e34ff656a7c8336ce01207bc2b8/RcppParallel/include/RcppParallel.h

So something is not escaping the space, which is causing the path to get split. I'm not sure where to start troubleshooting so any pointers would be greatly appreciated. My ~/.R/Makevars was initially

FC      = /opt/homebrew/Cellar/gcc/12.2.0/bin/gfortran
F77     = /opt/homebrew/Cellar/gcc/12.2.0/bin/gfortran
FLIBS   = -L/opt/homebrew/Cellar/gcc/12.2.0/lib

and I've tried adding various things, e.g.

CXX=clang++
CXX_STD = CXX11
PKG_LIBS += $(shell ${R_HOME}/bin/Rscript -e "RcppParallel::RcppParallelLibs()")

but nothing seems to change the error. I use homebrew for gcc and clang.

Thanks a ton.

Reproducible Steps:

install.packages("rstanarm")

RStanARM Version:

latest, both from CRAN and from install.packages("rstanarm", type = "source")

R Version:

4.2.2

Operating System:

OS X 12.6.1

Start by reproducing the failure with install.packages("rstanarm") on the reported macOS and inspect the compiler arguments involving RcppParallel::RcppParallelLibs(). Done means the Application Support path remains intact during compilation and the rstanarm source installation succeeds.