setup R build tools

notes.md

To compile R Source on windows

• BINPREF must be set to C:/Rtools/mingw_$(WIN)/bin/ (/ are important)
• Rtools must be on the path: C:\\Rtools\\bin\\; (/ less important)

This will make installation ok no matter the 📦 (like remotes)

What to know about RStudio

install.packages in rstudio is not directly utils::install.packages(). There is some things set after some verification. Like setting BINPREF. So installation will work without anything set in RStudio, but it won't work with remotes::install_cran for example.