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components fpdebug: Fixed compilation with verbose debugging Jun 26, 2018
converter IdeIntf: Split IDEOptionsIntf into a new IDEOptEditorIntf. Jun 9, 2018
debian IDE: Lithuanian translation update by Valdas Jankūnas, bug 32126 Jul 13, 2017
debugger LLDB Debugger: use custom stack trace format / support debug output win Jun 24, 2018
designer Designer: improved 'Ask Component Name' dialog i18n Jun 18, 2018
doceditor Translation: Simplified Chinese translation update by robsean, bug 33242 Feb 27, 2018
docs GDBMI Debugger Server: add optional support for -target-download if s… Jun 16, 2018
examples Examples: Added SynEdit search example. Issue 33554 Jun 17, 2018
ide IDE: Project Inspector: fixed 'New FPMake requirement' menu item capt… Jun 25, 2018
images Images for debugger, added more resolutions Jun 18, 2018
install Installation: Fix lazarus.desktop file (FreeDesktop). Issue #32485, p… Sep 29, 2017
languages IDE: regenerated translations and updated Russian translation Jun 25, 2018 IDE: darwin: fixed Ifo.plist short version Apr 9, 2017
lcl Fix for WinCE bug 33891. Patch by Alfred. Jun 26, 2018
packager ide: When the fppkg package is loaded, the IDE will use fppkg to inst… Jun 25, 2018 startlazarus bundle Mar 3, 2013
test tests: clena up May 28, 2018
tools Translations: Brazilian Portuguese translation update by Marcelo B Pa… Jun 13, 2018
COPYING.GPL.txt added .txt extension Jul 22, 2008
COPYING.LGPL.txt added .txt extension Jul 22, 2008
COPYING.modifiedLGPL.txt rename COPYING.modifiedLGPL to COPYING.modifiedLGPL.txt Jul 22, 2008
COPYING.txt lcl: added copy of Apache License, Version 2 for customdrawn/android May 20, 2014
Makefile make bigide: added cmdlinedebuggerbase and lazdebuggerlldb Jun 20, 2018
Makefile.fpc make help: fixed Oct 18, 2017
README.txt * Readme: gtk1 is obsolete; fpgui is unmaintained. Oct 14, 2014
appveyor.yml debug mode off May 6, 2018
fpmake.pp fpmake: Switched to fpmake.pp files that do not need setting the sour… Dec 29, 2014 fpmake: Switched to fpmake.pp files that do not need setting the sour… Dec 29, 2014 fpmake: fixes for ideintf being a package, and the debugger-packages Dec 27, 2014
localize.bat LazDataDesktop: don't regenerate translations from localize scripts a… Jun 21, 2016 LazDataDesktop: don't regenerate translations from localize scripts a… Jun 21, 2016


Welcome to Lazarus

Lazarus is a Rapid Application Development Tool for Free Pascal.
It comes with the LCL - Lazarus component library, which contains platform
independent visual components like buttons, windows, checkbox, treeview and
many, many more. The LCL is platform independent, so you can write an
application once and then compile for various platforms without changing code.

Free Pascal at is a fast Object Pascal compiler (and more),
that runs on more than 20 platforms (Linux, Windows, BSD, OS/2, DOS, PowerPC,
and many more).

The LCL currently supports Linux (gtk2 and qt4), all flavors of Windows
(even wince), Mac OS X (carbon, gtk2, qt4), FreeBSD (gtk2).
There is experimental support for:
* gtk3
* Solaris 
The LCL still contains code for gtk1 although that is obsolete.

You don't need ./configure, just do

  []$ make clean bigide

(BSD users: gmake clean bigide)

This will create the Lazarus executable with a lot of packages.
Start it and enjoy.

If the above gives an error, you can try to build a minimal IDE with
  []$ make clean all

(BSD users: gmake clean all)

Installation and Requirements:

See the file docs/INSTALL.


Start the IDE with:
  []$ cd your/lazarus/directory
  []$ ./lazarus


The official site is There you can find the FAQ -
the frequently asked questions.
Documents about specific topics can be found at
Examples on how to use the LCL can be found in the 'examples' directory.
Help, documents and files about Free Pascal are at

Mailing list:

There is a very active and helpful mailing list for Lazarus, where the
developers interact, share ideas, discuss problems, and of course answer
You can subscribe at

How to help Lazarus:

If you find bugs, don't hesitate to use the bug tracking tool at the website,
or send an email to the list.
Patches can be sent as .zip or .tgz attachments directly to the mailing list if
small, or (preferably) to the bug tracker at
or send the patch to