Requires at least macOS 10.12 or higher. For older Macs use the Mac OS i386 version. You need to download and install all three packages fpc, fpc-src and LazarusIDE. fpc - the Compiler, some command line tools, base units and non visual components like database access fpc-src - the sources of fpc and its packages, needed for code browsing LazarusIDE - the IDE, visual components and help files * For an overview what changed from previous 2.2 versions (includes incompatibilities with earlier versions) see: - https://wiki.freepascal.org/Lazarus_3.0_release_notes - https://wiki.lazarus.freepascal.org/User_Changes_3.2.2 - https://wiki.freepascal.org/FPC_New_Features_3.2 * Checksums can be found at https://www.lazarus-ide.org/index.php?page=checksums * For additional information visit our homepage, forum, wiki, and FAQ: -- https://www.lazarus-ide.org/ -- https://wiki.lazarus.freepascal.org/Installing_Lazarus_on_MacOS_X -- https://forum.lazarus.freepascal.org/ -- https://wiki.lazarus.freepascal.org/Lazarus_Faq "Unknown developer" error when installing (Mac OS X 10.7 Mountain Lion and later) If you get the message that the FPC installer was created by an unknown developer and cannot be opened, right-click on the installation package and choose "Open" in the contextual menu. If this does not work, you may first have to go to System Preferences -> Security & Privacy -> General, and "Allow apps downloaded from: Mac App Store and Identified developers". These workarounds are required because we do not pay Apple 79 euro per year, which would prove you can trust us. Xcode 5+ compatibility (OS X 10.9 Mavericks; for OS X 10.8 Mountain Lion, see below) FPC 3.2.0 is qualified for use with Mac OS X 10.4 till macOS 10.15. Xcode 5 and later however no longer install the command line tools by default, which are required by FPC. To install them manually, open "/Applications/Utilities/Terminal", execute "xcode-select --install" and choose "Install". Afterwards, FPC will function correctly.