: If you intend to contribute to the Lazarus project itself, you need the source code from the main branch.
: If this sounds too complex, it is much easier to download the pre-compiled installer from the Official Lazarus SourceForge .
: Running from a zip allows you to have multiple versions of Lazarus on the same machine without them interfering with each other.
: Do not extract it to C:\Program Files on Windows, as restricted permissions can break the build process. Use a path like C:\Lazarus\ or your home directory instead. Install Free Pascal Compiler (FPC) :
Ensure FPC is installed and added to your system's PATH variable so Lazarus can find it. :
Lazarus-main.zip May 2026
: If you intend to contribute to the Lazarus project itself, you need the source code from the main branch.
: If this sounds too complex, it is much easier to download the pre-compiled installer from the Official Lazarus SourceForge . Lazarus-main.zip
: Running from a zip allows you to have multiple versions of Lazarus on the same machine without them interfering with each other. : If you intend to contribute to the
: Do not extract it to C:\Program Files on Windows, as restricted permissions can break the build process. Use a path like C:\Lazarus\ or your home directory instead. Install Free Pascal Compiler (FPC) : Lazarus-main.zip
Ensure FPC is installed and added to your system's PATH variable so Lazarus can find it. :