Lazarus is a free cross-platform visual integrated development environment (IDE) for rapid application development (RAD) using the Free Pascal compiler.

Software developers use Lazarus to create native-code console and graphical user interface (GUI) applications for the desktop, and also for mobile devices, web applications, web services, visual components and function libraries for a number of different platforms, including Mac, Linux and Windows.

An application created using Lazarus on one platform can generally compile and execute on any platform for which a Free Pascal compiler exists. For desktop applications a single source can target Mac, Linux, and Windows, with little or no modification

Free Pascal Compiler (FPC) is a compiler for the closely related programming language dialects, Pascal and Object Pascal. It is free software released under the GNU General Public License.

It supports its own Object Pascal dialect as well as the dialects of several other Pascal family compilers to a certain extent, including those of Turbo Pascal, Delphi, and some historical Macintosh compilers. The dialect is selected on a per-unit (module) basis, and more than one dialect can be used per program.

It follows a write once, compile anywhere philosophy, and is available for many CPU architectures and operating systems (see Targets). It supports integrated assembly language and an internal assembler in several dialects.

Separate projects exist to facilitate developing cross-platform graphical user interface (GUI) applications, the most prominent one being the Lazarus integrated development environment (IDE).

FPC version 3.0.4 has been released!

This version is a point update to 3.0 and contains bugfixes and updates packages, some of which are high priority.

There is a list of changes that may break backward compatibility http://wiki.freepascal.org/User_Changes_3.0.4. You can also have a look at the FPC 3.0.4 documentation http://www.freepascal.org/docs.var .

Downloads are available at the download section http://www.freepascal.org/download.var .

The Lazarus team is glad to announce the release of Lazarus 1.8.

The release was built with FPC 3.0.4.
The previous release Lazarus 1.6.4 was built with FPC 3.0.2.

Here is the list of changes for Lazarus and Free Pascal:
http://wiki.lazarus.freepascal.org/Lazarus_1.8.0_release_notes
http://wiki.lazarus.freepascal.org/User_Changes_3.0.4

Here is the list of fixes for Lazarus 1.8.x:
http://wiki.freepascal.org/Lazarus_1.8_fixes_branch

The release is available for download on SourceForge:
http://sourceforge.net/projects/lazarus/files/

Choose your CPU, OS, distro and then the "Lazarus 1.8.0" directory.

Checksums for the SourceForge files:
http://www.lazarus-ide.org/index.php?page=checksums#1_8_0

Minimum requirements:

Windows:
2k, XP, Vista, 7, 8, 8.1 and 10, 32 or 64bit.
optional qt 4.5 or 5.6 for qt apps

FreeBSD/Linux:
gtk 2.8 for gtk2, qt4.5 for qt, qt5.6 for qt5, 32 or 64bit.

Mac OS X:
10.5 to 10.12; Carbon (32bit), Cocoa (64bit, not stable), qt and qt5 (32 or 64bit).

The svn tag is
http://svn.freepascal.org/svn/lazarus/tags/lazarus_1_8_0

For people who are blocked by SF, the Lazarus releases from SourceForge are mirrored at:
ftp://ftp.freepascal.org/pub/lazarus/releases/
and later at (after some time for synchronization)
http://mirrors.iwi.me/lazarus/

Freepascal user's guide #downloads #documentation #freepascal

The Lazarus team is glad to announce the release of Lazarus 1.8.2. This is a bugfix release.

The release was built with FPC 3.0.4.

Here is the list of changes for Lazarus and Free Pascal:
http://wiki.lazarus.freepascal.org/Lazarus_1.8.0_release_notes
http://wiki.lazarus.freepascal.org/User_Changes_3.0.4

Here is the list of fixes for Lazarus 1.8.x:
http://wiki.freepascal.org/Lazarus_1.8_fixes_branch

The release is available for download on SourceForge:
http://sourceforge.net/projects/lazarus/files/

Choose your CPU, OS, distro and then the "Lazarus 1.8.2" directory.

Checksums for the SourceForge files:
http://www.lazarus-ide.org/index.php?page=checksums#1_8_2

Minimum requirements:

Windows:
2k, XP, Vista, 7, 8, 8.1 and 10, 32 or 64bit.
optional qt 4.5 or 5.6 for qt apps

FreeBSD/Linux:
gtk 2.8 for gtk2, qt4.5 for qt, qt5.6 for qt5, 32 or 64bit.

Mac OS X:
10.5 to 10.12; Carbon (32bit), Cocoa (64bit, not stable), qt and qt5 (32 or 64bit).

The svn tag is
http://svn.freepascal.org/svn/lazarus/tags/lazarus_1_8_2

For people who are blocked by SF, the Lazarus releases from SourceForge are mirrored at:
ftp://ftp.freepascal.org/pub/lazarus/releases/
and later at (after some time for synchronization)
http://mirrors.iwi.me/lazarus/

#lazarus #DB

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Online Package Manager (OPM) is a tool that automates the process of installing, upgrading, configuring Lazarus packages. #Lazarus #LCL #components

The packages are stored in the main repository(see repository column) as zip files, along with a JSON file. #Lazarus #LCL #components

The JSON contains all necessary information about the packages. On request the packages are downloaded/extracted/compiled/installed into the IDE. If available, it's also possible to update a previously installed package from the maintainer webpage(see update column). There's also a web version of the Lazarus Packages Repository available here: http://packages.lazarus-ide.org/
Online package manager is part of Lazarus sources, in directory ($LazarusDir)/components/onlinepackagemanager #Lazarus #LCL #components

The Lazarus team is glad to announce the release of Lazarus 1.8.4. This is a bugfix release.
The release was built with FPC 3.0.4.
Here is the list of changes for Lazarus and Free Pascal:
http://wiki.lazarus.freepascal.org/Lazarus_1.8.0_release_notes
http://wiki.lazarus.freepascal.org/User_Changes_3.0.4
Here is the list of fixes for Lazarus 1.8.x:
http://wiki.freepascal.org/Lazarus_1.8_fixes_branch
The release is available for download on SourceForge:
http://sourceforge.net/projects/lazarus/files/
Choose your CPU, OS, distro and then the "Lazarus 1.8.4" directory.
Checksums for the SourceForge files:
http://www.lazarus-ide.org/index.php?page=checksums#1_8_4

Minimum requirements:
Windows:
2k, XP, Vista, 7, 8, 8.1 and 10, 32 or 64bit.
optional qt 4.5 or 5.6 for qt apps
FreeBSD/Linux:
gtk 2.8 for gtk2, qt4.5 for qt, qt5.6 for qt5, 32 or 64bit.
Mac OS X:
10.5 to 10.12; Carbon (32bit), Cocoa (64bit, not stable), qt and qt5 (32 or 64bit).

The svn tag is
http://svn.freepascal.org/svn/lazarus/tags/lazarus_1_8_4

For people who are blocked by SF, the Lazarus releases from SourceForge are mirrored at:
ftp://ftp.freepascal.org/pub/lazarus/releases/
and later at (after some time for synchronization)
http://mirrors.iwi.me/lazarus/

The Lazarus team is glad to announce the first release candidate of Lazarus 2.0.

This release was built with FPC 3.0.4.
The previous release Lazarus 1.8.4 was built with FPC 3.0.4 as well.

Here is the list of fixes for Lazarus 2.0.x:
* http://wiki.freepascal.org/Lazarus_2.0_fixes_branch

Here is the list of changes for Lazarus and Free Pascal:
* http://wiki.lazarus.freepascal.org/Lazarus_2.0.0_release_notes
* http://wiki.lazarus.freepascal.org/User_Changes_3.0.4

The release is available for download on SourceForge:
* http://sourceforge.net/projects/lazarus/files/

Choose your CPU, OS, distro and then the "Lazarus 2.0RC1" directory.

Checksums for the SourceForge files:
* http://www.lazarus-ide.org/index.php?page=checksums#2_0_0RC1

Minimum requirements:
* Windows: 2k, XP, Vista, 7, 8, 8.1 and 10, 32 or 64bit.
* FreeBSD/Linux: gtk 2.8 for gtk2, qt4.5 for qt, qt5.6 for qt5, 32 or 64bit.
* Mac OS X: 10.5 to 10.12; Carbon (32bit), Cocoa (64bit, beta), qt and qt5 (32 or 64bit).

The svn tag is
* http://svn.freepascal.org/svn/lazarus/tags/lazarus_2_0_0_RC1

For people who are blocked by SF, the Lazarus releases from SourceForge are mirrored at: ftp://ftp.freepascal.org/pub/lazarus/releases/ and later at (after some time for synchronization) http://mirrors.iwi.me/lazarus/

== Why should everybody (including you) test the release candidate? ==

In the past weeks the Lazarus team has stabilized the 2.0 fixes branch.
The resulting 2.0RC1 is now stable enough to be used by any one for test purposes.

However many of the fixes and new features that where committed since the release of 1.8 required changes to the code of existing features too. While we have tested those ourself, there may still be problems that only occur with very specific configurations or one project in a million.

Yes, it may be that you are the only person with a project, that will not work in the new IDE. So if you do not test, we can not fix it.

Please do not wait for the final release, in order to test. It may be too late. Once the release is out we will have to be more selective
about which fixes can be merged for further 2.0.x releases. So it may be, that we can not merge the fix you require. And then you will miss out on all the new features.

== How to test ==

Download and install the 2.0 RC1.
- On Windows you can install as a 2ndary install, that will not affect your current install:
http://wiki.lazarus.freepascal.org/Multiple_Lazarus#Installation_of_multiple_Lazarus
- On other platforms, if you install to a new location you need to use --primary-config-path

In either case you should make backups. (including your primary config)

Open your project in the current Lazarus (1.8.x), and use "Publish Project" from the project menu. This creates a clean copy of your project.

You can then open that copy in the RC1. Please test:
- If you can edit forms in the designer
- rename components / change properties in Object inspector / Add new events
- Add components to form / Move components on form
- Frames, if you use them
- If you can navigate the source code (e.g. jump to implementation)
- Auto completion in source code
- Compile, debug and run
- Anything else you use in your daily work

With the Lazarus Release Candidate 1 for 2.0 a new debugger for Mac users has been shipped.
It is based on LLDB, which is provided by apple and is ready to use. So there should no longer be a need to build and codesign gdb.

As the LLDB integration is all new, it needs a lot of testing. So this is a ...

call to all Mac users:
Please test the new LLDB based Lazarus debugger.

To test the new debugger, please download the Lazarus 2.0RC1.

- Open the IDE and install the package "LazDebuggerFpLLdb".
It should be in the list of available packages, but if not it is in components/lazdebuggers/lazdebuggerfplldb
Make sure to use the one with "Fp" in the name. (There also is LazDebuggerLLdb, but it is not as good.)
Restart the IDE.

- Go to Tools > Options > Debugger
In the "debugger type" dropdown, you should find and select "LLDB debugger (with fpdebug)"
The edit below this (where you normally have the path to gdb), should be changed to the path of lldb.
(lldb comes with the tools from Apple; and as such it is already codesigned by Apple).


To report any problems:
Start Lazarus from a shell with the following command line (replace pathes according to your installation):

You may need to use startlazarus, or specify the re-build lazarus which may be in your home folder / pcp.

    /path/to/lazarus/lazarus.app/Contents/MacOS/lazarus --debug-log=/path/to/yourfiles/laz.log --debug-enable=DBG_CMD_ECHO,DBG_STATE,DBG_DATA_MONITORS,DBGMI_QUEUE_DEBUG,FPDBG_DWARF_ERRORS,FPDBG_DWARF_WARNINGS,FPDBG_DWARF_VERBOSE_LOAD,FPDBG_DWARF_DATA_WARNINGS,DBG_VERBOSE,DBG_WARNINGS,DBG_STATE,DBG_EVENTS,DBG_THREAD_AND_FRAME

Attach the log file after reproducing the error.

Fpcupdeluxe, a GUI installer for FPC and Lazarus. Based on fpcup

The main purpose of fpcdeluxe is to provide a means for installing and updating multiple versions of FPC and Lazarus in a self-contained manner. Self-contained meaning that an install by fpcupdeluxe will have no influence on (interference with) your system: Hence you can install multiple versions of FPC and Lazarus.

Fpcupdeluxe makes cross-compiling easy: just select a CPU and an OS, and press install crosscompiler. If libraries and/or binary tools are needed, fpcupdeluxe will try to get them online.