The fpc dmg contains the Free Pascal Compiler.

The lazarus zip contains the Lazarus IDE and the fpc sources.
Don't forget to unmark the zip before unzipping:

  *xattr -cr lazarus-darwin-aarch64-4.2.zip*

Installation:

Before installing the compiler, the **XCode command line tools Version 15** must be installed from the **Mac App Store**.
See here for details:
<https://wiki.freepascal.org/Installing_Lazarus_on_macOS#Installation>

Checksums can be found at <http://www.lazarus-ide.org/index.php?page=checksums>

- For an overview what changed from earlier versions of fpc see:  
    -- <http://wiki.lazarus.freepascal.org/Lazarus_3.0_release_notes>  
    -- <http://wiki.freepascal.org/User_Changes_3.2.4>  
    -- <http://wiki.freepascal.org/FPC_New_Features_3.2>  

- For additional information visit our homepage, forum, wiki, and FAQ:  
    -- <http://www.lazarus-ide.org/>  
    -- <http://forum.lazarus.freepascal.org/>  
    -- <http://wiki.lazarus.freepascal.org/Lazarus_Faq>