Topic 4 Add-On Packages

4.1 Why can’t I compile packages from source?

If you are a Windows user, you are missing RTools. See this FAQ

If you are a Mac user, there might be something wrong with your installation.

October 24, 2019. -DB

4.2 When I try to compile, I get the following error message:

xcrun: error: invalid active developer path

Solution:

• Open up the Terminal App. (Application>Utilities or you can use the Terminal tab in RStudio, next to the console).
• At the command line in the Terminal type the following line.

xcode-select --install

October 24, 2019. -DB