Virtual Machines. In addition to the derived dual-stack virtual machine written in pascal and explained above, this project will produce two virtual machines capable of running inside a web browser: p5vm.cf - a direct port of the original P5 virtual machine, written in the coffeescript language for clarity. Sep 14, 2015 Download Pascal Translator for Virtual Machines for free. PTVM converts Object Pascal code into a given Virtual Machine language, and compiles it. Brings a common Virtual Machine Library for maximum support and compatibility.

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.

Pascal has been a comfortable programming language since I started programming in the 70ties. 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. Now getting freepascal and Lazarus on the Pi is easy but you get quite old versions:

On Raspbian wheezy you get Freepascal 2.6.0 and Lazarus 0.9.30.4. version dating from 2012. Working but not quite bleeding edge. Perfect for a first session! On Raspbian jessie you get more recent versions: Freepascal 2.6.4 and Lazarus 1.2.4. 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/). Freepascal is missing the character based fp IDE alas. And the programs compiled on the Raspberry Pi 2 B crashed on the older Raspberry Pi for me. So far so good for most of us. But not what I wanted. I have both Raspberry Pi’s Version 1 and the newer Version 2 systems. 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. But the resulting programs are running fast enough, we have a real compiler here! What I want is:

compile and test on the Raspberry Pi 2 MB and enjoy the speed.
Run on all Raspberry Pi models, so limited to ARMV6.
Run on older wheezy and modern jessie Raspbian.
The RPi 2 has four ARM V7 cores, Freepascal and Lazarus will benefit in speed from this architecture if compiled for ARMV7.
So I set out to build images of Raspbian with more current versions of Freepascal and Lazarus on both latest Raspbian jessie and wheezy

Recipe for ARM V6 RPi versions 1 and 2 Model A, A+, B, B+, 2B
Recipe ARM V7 version 2 Model B
Building the latest version of Feepascal requires a seed compiler, version 2.6.4. This is available as binary for ARM, a generic version. 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,.

Setup a fresh system

First a fresh system, get the latest jessie and/or wheezy from raspberrypi.org. These are the steps I perform for a new system. My main system is a Windows system, I do most work from there, including remote access.

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Image SD card (Win32DiskImager), 16GB minimal. 8 GB may work, but I often get problems with installing Lazarus due to out of disk space.

Boot and login (user pi, password raspberry) locally

With raspi-config at least change

Expand file system
Boot into commandline (desktop is in the way during the build!)
Change password – Overclock (medium for older, RPI2 voor RPi2 B)
Advanced options:
enable ssh
memory split to 16 MB, you can chage that back later for graphics work – change hostname and reboot
Get the IP address assigned to the Pi Type

and note the IP address assigned to the RPi. Now you can use PuTTY from Windows to access the command line of your Pi or continue on the RPi itself.

Get rights as root for the whole session

Increase swapfile to prevent ‘out of memory’ during compilation

change from 100 to 1000 and check its 1000M now. Remember to cut that back to the default after the builds!

Get a current system

Make some room,

Software I do not intend to use at all and take up a lot of disk space

Get subversion and unzip

Get seed compiler fpc 2.6.4 installed

answer location question from script with /usr/local, other questions with Y

to check it has 2.6.4

Cleanup

After installing FPC, type fp and use the IDE to enter and compile the first program:

Save,as helloworld, build and run it with

Hello world!

ARMv7

Raspberry Pi 2 Model B only! Resulting programs only run on RPi 2B!

Install fpc trunk (version 3.1.1 at the moment)

Mozilla offline installer 32 bit. shows 2.6.4 and 3.1.1 present.

Now make fpc 3.1.1 available

Install some packages

Get the source

This time I show to get not the bleeding edge trunk Lazarus 1.5, but the fix 1.4.5 version.

Now continue with the Post build steps!

ARMv6

Resulting programs run on all RPi’s! Install fpc trunk (version 3.1.1 at the moment)

shows 2.6.4 and 3.1.1 present Now make fpc 3.1.1 available

Install some packages

Get the source

Install Free Pascal In Virtual Machine Download

Post build steps

Install Free Pascal In Virtual Machine Windows 10

Cleanup the source code

Set swapfile to default

change from 1000 to 100 and check its 100M now.

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Fixing the GCC Library path

Change the line

Start Lazarus

You can start Lazarus from the desktop

With jessie the Lazarus entry did not appear in the menu programming. Add this yourself with the Menu editor, browse the computer to find the lazarus executable in /usr/local/share/lazarus, the desktop icon is there also. Lazarus asks the first time run where the fpc sources are

Now you are ready to run! Resources from which I learned how to write the steps above! Thank you!

How to install Lazarus Pascal on Raspberry Pi 2 (Raspbian), Tweaking4All
Compiling the Latest Lazarus/Free Pascal for Raspberry Pi, Big Dan the Blogging Man
Raspberry Pi 2, FreePascal, Lazarus and Delphi, Simon J Stuart
http://forum.lazarus.freepascal.org/index.php?topic=30647.0

Whether you test the software on the professional level or just like to have a look on the same app from the aspect on different operational systems, surely you know that it is much better to install the required OS version on the virtual machine than to set it up on the real-life operational environment, messing up with the settings and customizing each new OS from scratch. It will save you tons of nerve cells and a mass of time, as far as removing the new OS is as easy, as just clicking the several mouse buttons. And if you desi