Installing Lazarus on macOS
From Free Pascal wiki
How to update fpc and Lazarus to the newest version
For 10.2 to 10.4
Install SVN for Mac OS X: A good package is provided by Martin Ott.
10.5 users don't need that because it already installs subversion by default via the XCodeTools package.
- Then follow Installing_Lazarus#Downloading_Lazarus_SVN