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This removes the '$' character so that it is easier to copy commands directly from the build instructions and then executing them without first having to remove the '$' character.
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SerenityOS build instructions
Prerequisites
Make sure you have all the dependencies installed:
Debian / Ubuntu
sudo apt install build-essential cmake curl libmpfr-dev libmpc-dev libgmp-dev e2fsprogs ninja-build qemu-system-i386 qemu-utils ccache rsync
GCC 10
On Ubuntu gcc-10 is available in the repositories of 20.04 (Focal) and later - add the ubuntu-toolchain-r/test PPA if you're running an older version:
sudo add-apt-repository ppa:ubuntu-toolchain-r/test
On Debian you can use the Debian testing branch:
sudo echo "deb http://http.us.debian.org/debian/ testing non-free contrib main" >> /etc/apt/sources.list
sudo apt update
Now on Ubuntu or Debian you can install gcc-10 with apt like this:
sudo apt install gcc-10 g++-10
sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-10 900 --slave /usr/bin/g++ g++ /usr/bin/g++-10
If you don't want to stay on the Debian testing branch you can switch back by running:
sudo sed -i '$d' /etc/apt/sources.list
sudo apt update
QEMU 5 or later
QEMU version 5 is available in Ubuntu 20.10. For earlier versions, you can build version 6 using the Toolchain/BuildQemu.sh script.
You may need the gtk+ 3.0 dev package:
sudo apt install libpixman-1-dev libgtk-3-dev
Windows
If you're on Windows you can use WSL2 to build SerenityOS. Please have a look at the Windows guide for details.
Arch Linux / Manjaro
sudo pacman -S --needed base-devel cmake curl mpfr libmpc gmp e2fsprogs ninja qemu qemu-arch-extra ccache rsync
Other systems
There is also documentation for installing the build prerequisites for some less commonly used systems:
Build
In order to build SerenityOS you will first need to build the toolchain by running the following command:
Meta/serenity.sh rebuild-toolchain
Later on, when you use git pull to get the latest changes, there's (usually) no need to rebuild the toolchain.
Run the following command to build and run SerenityOS:
Meta/serenity.sh run
This will compile all of SerenityOS and install the built files into the Build/i686/Root directory inside your Git
repository. It will also build a disk image and start SerenityOS using QEMU.
Note that the anon user is able to become root without a password by default, as a development convenience.
To prevent this, remove anon from the wheel group and he will no longer be able to run /bin/su.
If you want to test whether your code changes compile without running the VM you can use
Meta/serenity.sh build. The serenity.sh script also provides a number of other commands. Run the script without
arguments for a list.
Ports
To add a package from the ports collection to Serenity, for example curl, change into the Ports/curl directory and
run ./package.sh. The source code for the package will be downloaded and the package will be built. The next time you
start Serenity, curl will be available.
More information
At this point you should have a fully functioning VM for SerenityOS. The advanced build instructions guide has more information for some less commonly used features of the build system.