My main system is a Windows system, I do most work from there, including remote access. These are the steps I perform for a new system. The trick in building Lazarus is making sure the Freepascal compiler is targeted for the same architecture, so we have to build a Freepascal compiler for the same architecture.įirst a fresh system, get the latest jessie and/or wheezy from. This is available as binary for ARM, a generic version. Recipe for ARM V6 RPi versions 1 and 2 Model A, A+, B, B+, 2Bīuilding the latest version of Feepascal requires a seed compiler, version 2.6.4. So I set out to build images of Raspbian with more current versions of Freepascal and Lazarus on both latest Raspbian jessie and wheezy The RPi 2 has four ARM V7 cores, Freepascal and Lazarus will benefit in speed from this architecture if compiled for ARMV7. Run on older wheezy and modern jessie Raspbian. Run on all Raspberry Pi models, so limited to ARMV6. But the resulting programs are running fast enough, we have a real compiler here! What I want is:Ĭompile and test on the Raspberry Pi 2 MB and enjoy the speed. All systems run Lazarus on the desktop, but the older version 1 systems are running Lazarus quite slow due to the ARM V6 CPU and lack of memory. I have both Raspberry Pi’s Version 1 and the newer Version 2 systems. And the programs compiled on the Raspberry Pi 2 B crashed on the older Raspberry Pi for me. Freepascal is missing the character based fp IDE alas. Much better! Note that for me Lazarus did not show up in the Programming menu on the desktop on jessie, but easy to add yourself with the menu editor (lazarus is located somewhere in /usr/local/). Perfect for a first session! On Raspbian jessie you get more recent versions: Freepascal 2.6.4 and Lazarus 1.2.4. On Raspbian wheezy you get Freepascal 2.6.0 and Lazarus 0.9.30.4. Now getting freepascal and Lazarus on the Pi is easy but you get quite old versions: Coming from the Portable P2 and P4 compilers on Digital computers, made by the team of Niklaus Wirth, HP1000 Pascal, VAX/VMS Pascal via Turbo Pascal on MS-DOS and Delphi on Windows to Freepascal and Lazarus on the Raspberry. Pascal has been a comfortable programming language since I started programming in the 70ties. Rewriting generate.py in Pascal would be a fool's errand.A page describing how to get the latest Freepascal and Lazarus development systems on all versions of the Raspberry Pi and Raspbian wheezy and jessie in optimal format, targeted at ARMV6 and ARMV7. When you choose File | New | qooxdoo Javascript App, the Pascal package runs the qooxdoo generate.py script to create the app skeleton. That's easy to do and is already done in at least one package for Lazarus: Note that if the Python code does just one or two big things, you can just shell to the Python interpreter from Pascal rather than embed the interpreter. For example, QGIS includes Python in its Windows installer since Python is required for its many plugins (and Python is not installed on Windows by default the way it is on Mac and Linux).ĭo you have Python skills such that you prefer to write most of the code in Python? If so, I wouldn't bother with Pascal.Īgain, what is _essential_ about what you've proposed (Pascal GUI calling Python code) that forces you down this route? What problem are you trying to solve? I don't have a clue as to what you're thinking of doing.ĭo you have a large existing Python codebase and you need to embed the Python interpreter into a GUI (Pascal) desktop app? See references above. If you are feeling brave enough you can try implementing the graphics part in fpgui, which doesn't have all the baggage of the LCL but has fewer controls implemented.

You will also need some more info into the Lazarus RTTI and developments in the RTTI branch will help. Given that the developer of VCLua managed to wrap it all into a DLL and make the whole thing accessible directly from the command line without any hint of Lazarus involved, I think that is your best bet, or at least your guide to insight into the process. On the Python level there is which has had some FPC related updates at and You can do it, but it requires good knowledge of the language as well as Lazarus/FreePascal.Ī good example of what you are thinking of is VCL Lua.Īnother one is pLua - which has gone into developing which is a Delphi project.įor simpler starting libraries that give more insight into the process there is stuff like, which give some insight into how Lua links with Lazarus.

Lazarus with pascal