I have been trying to install the “kernlab” package as I am trying to learn machine learning and need it for Support Vector Machine models. I have GCC-13 downloaded through Homebrew, and it is stored in /opt/homebrew/opt (which I know is a non-typical location for it to download to). I have also made my own Makevars file aligning with Rodrigo Zepeda’s blog (https://rodzepeda.medium.com/fixing-macos-catalinas-mess-when-trying-to-compile-almost-any-r-package-d94a063d64eb). I do have MacOS Sonoma 14.4.1 (the newest version), RStudio/2024.04.0+735 and gcc-13. However, when I go to install the package, I get this error: