Freepascal and Lazarus IDE on Manjaro

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How to install Freepascal FPC 3.20

Install binutils

sudo pacman -Syu binutils

Download fpc from here https://www.freepascal.org/down/aarch64/linux-hungary.html

Unpack and install

tar -xf fpc-3.2.0.aarch64-linux.tar
cd fpc-3.2.0.aarch64-linux
sudo sh install.sh

Test it:-

Use a test editor to create helloworld.pas

Program helloworld;
begin
  writeln ('Hello world');
end.

Compile and run it

fpc helloworld.pas 
Free Pascal Compiler version 3.2.0 [2020/06/05] for aarch64
Copyright (c) 1993-2020 by Florian Klaempfl and others
Target OS: Linux for AArch64
Compiling helloworld.pas
Assembling helloworld
Linking helloworld
4 lines compiled, 0.5 sec
./helloworld 
Hello world

How to compile Lazarus

Install necessary Manjaro packages

sudo pacman -Syu make subversion qt5pas

Download Lazarus source

cd ~
mkdir fpc
cd fpc
svn co https://svn.freepascal.org/svn/lazarus/trunk lazarus
cd lazarus
make LCL_PLATFORM=qt5

Download fpc-3.2.0.source.tar.gz from https://www.freepascal.org/down/source/sources.html and unpack the fpc src in some convenient folder (I used ~/fpc/fpc-3.2.0)

Run it

cd ~/fpc/lazarus
./startlazarus

Add Lazarus to your KDE start menu

touch ~/.local/share/applications/lazarus.desktop

Edit the file

kate ~/.local/share/applications/lazarus.desktop

Paste in this code

[Desktop Entry]
Categories=Development;
Comment=IDE
Exec=~/fpc/lazarus/startlazarus %f
GenericName=IDE
Icon=text-editor
InitialPreference=9
MimeType=text/plain;
Name=Lazarus
Path=
StartupNotify=true
Terminal=false
TerminalOptions=
Type=Application
X-DBUS-ServiceName=
X-DBUS-StartupType=
X-KDE-HasTempFileOption=true
X-KDE-SubstituteUID=false
X-KDE-Username=

Save the file

Original source of information https://forum.manjaro.org/t/how-to-install-fpc-and-lazarus-on-pinebook-pro-arm-64-bit/152872