ERROR in installing package and RccpArmadillo dependency on Mac

I am having issues in installing a package from a .tar.gz repository.When I try to install it, I get the following error:

ERROR: dependency ‘RcppArmadillo’ is not available for package ‘xxx'

I looked online for solutions trying to install RccpArmadillo first but there's a lot of confusion and I am stuck in the process.

I first simply tried

install.packages("RccpArmadillo")

But I got this strange message

Warning in install.packages : package ‘RccpArmadillo’ is not available for this version of R

Online, I found suggestions to type in the Terminal (outside R) the following code

curl -O http://r.research.att.com/libs/gfortran-4.8.2-darwin13.tar.bz2 sudo tar fvxz gfortran-4.8.2-darwin13.tar.bz2 -C /

But still, not working. I get the following error from the Terminal

curl -O http://r.research.att.com/libs/gfortran-4.8.2-darwin13.tar.bz2 sudo tar fvxz gfortran-4.8.2-darwin13.tar.bz2 -C / % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 100 162 100 162 0 0 522 0 --:--:-- --:--:-- --:--:-- 532 Password: tar: Error opening archive: Unrecognized archive format

Does anyone have any idea of what is going on? How can this issue be solved?Here are some info about the environment via sessionInfo()

`R version 4.3.1 (2023-06-16)Platform: aarch64-apple-darwin20 (64-bit)Running under: macOS Ventura 13.5.2

Matrix products: defaultBLAS: /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libBLAS.dylibLAPACK: /Library/Frameworks/R.framework/Versions/4.3-arm64/Resources/lib/libRlapack.dylib; LAPACK version 3.11.0

attached base packages:[1] stats graphics grDevices utils datasets methods base

loaded via a namespace (and not attached):[1] compiler_4.3.1 tools_4.3.1 `

The version of R that I am using is the last released for M2 silicon Macs and should not be an obsolescence problem.