Mavericks 10.9 and later includes shims or wrapper executables. Xcode comes bundled with all the command line tools. If you install Xcode, then there is no need to install the command line tools.

Install Xcode (includes Command Line Tools) You can use either of the following methods to install the command line tools on your system: Installing Command Line Tools: Mavericks 10.9 and higher It consists of the macOS SDK and command-line tools which are installed in the /Library/Developer/CommandLineTools directory. The standalone Command Line Tools Package is a small self-contained package available for download separately from Xcode and that allows you to do command line development in macOS. Xcode is an integrated development environment for macOS containing a suite of software development tools developed by Apple for developing software for macOS, iOS, iPadOS, watchOS, and tvOS. You WILL need to install Xcode if: (1) you want access to the SDKs for iOS, iPadOS, watchOS and tvOS or (2) to validate and upload apps to the Mac App Store or (3) to notarize apps for distribution outside of the Mac App Store.

Note: You do NOT need to install the Xcode IDE in order to get all the build utilities on which the Free Pascal Compiler depends, but you DO need to install the Command Line Tools.

Install xcode command line tools