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119 lines
4.6 KiB
Markdown
119 lines
4.6 KiB
Markdown
# SerenityOS build instructions
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## Prerequisites
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Make sure you have all the dependencies installed:
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### Debian / Ubuntu
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```console
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sudo apt install build-essential cmake curl libmpfr-dev libmpc-dev libgmp-dev e2fsprogs ninja-build qemu-system-gui qemu-system-x86 qemu-utils ccache rsync unzip texinfo libssl-dev
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```
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Optional: `fuse2fs` for [building images without root](https://github.com/SerenityOS/serenity/pull/11224).
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#### GCC 12 or Clang 13
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A host compiler that supports C++20 features is required for building host tools, the newer the better. Tested versions include gcc-12 and clang-13.
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On Ubuntu gcc-12 is available in the repositories of 22.04 (Jammy) and later.
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If you are running an older version, you will either need to upgrade, or find an alternative installation source.
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Next, update your local package information from this repository:
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```console
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sudo apt update
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```
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Now on Ubuntu or Debian you can install gcc-12 with apt like this:
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```console
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sudo apt install gcc-12 g++-12
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```
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#### QEMU 6.2 or later
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Version 6.2 of QEMU is available in Ubuntu 22.04. On earlier versions of Ubuntu,
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you can build the recommended version of QEMU as provided by the toolchain by running
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`Toolchain/BuildQemu.sh`.
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Note that you might need additional dev packages in order to build QEMU on your machine:
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```console
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sudo apt install libgtk-3-dev libpixman-1-dev libsdl2-dev libspice-server-dev
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```
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#### CMake version 3.25.0 or later
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Serenity-specific patches were upstreamed to CMake in major version 3.25. To avoid carrying
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patches to CMake, the minimum required CMake to build Serenity is set to that version.
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If more patches are upstreamed to CMake, the minimum will be bumped again once that version releases.
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To accommodate distributions that do not ship bleeding-edge CMake versions, the build scripts will
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attempt to build CMake from source if the version on your path is older than 3.25.x.
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If you have previously compiled SerenityOS with an older or distribution-provided version of CMake,
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you will need to manually remove the CMakeCache.txt files, as these files reference the older CMake version and path.
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```console
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rm Build/*/CMakeCache.txt
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```
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### Windows
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If you're on Windows you can use WSL2 to build SerenityOS. Please have a look at the [Windows guide](BuildInstructionsWindows.md)
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for details.
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### Arch Linux / Manjaro
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```console
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sudo pacman -S --needed base-devel cmake curl mpfr libmpc gmp e2fsprogs ninja qemu-desktop qemu-system-x86 qemu-system-aarch64 ccache rsync unzip
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```
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Optional: `fuse2fs` for [building images without root](https://github.com/SerenityOS/serenity/pull/11224).
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### Other systems
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There is also documentation for installing the build prerequisites for some less commonly used systems:
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* [Other Linux distributions and \*NIX systems](BuildInstructionsOther.md)
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* [macOS](BuildInstructionsMacOS.md)
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## Build
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In order to build SerenityOS you will first need to build the toolchain by running the following command:
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```console
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Meta/serenity.sh rebuild-toolchain
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```
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Later on, when you use `git pull` to get the latest changes, there's (usually) no need to rebuild the toolchain.
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Run the following command to build and run SerenityOS:
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```console
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Meta/serenity.sh run
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```
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This will compile all of SerenityOS and install the built files into the `Build/x86_64/Root` directory inside your Git
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repository. It will also build a disk image and start SerenityOS using QEMU.
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If, during build, an error like `fusermount: failed to open /etc/mtab: No such file or directory` appears, you have installed `fuse2fs` but your system does not provide the mtab symlink for various reasons. Simply create this symlink with `ln -sv /proc/self/mounts /etc/mtab`.
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Note that the `anon` user is able to become `root` without a password by default, as a development convenience.
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To prevent this, remove `anon` from the `wheel` group and he will no longer be able to run `/bin/su`.
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By default the `anon` user account's password is: `foo`
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If you want to test whether your code changes compile without running the VM you can use
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`Meta/serenity.sh build`. The `serenity.sh` script also provides a number of other commands. Run the script without
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arguments for a list.
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## Ports
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To add a package from the ports collection to Serenity, for example curl, change into the `Ports/curl` directory and
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run `./package.sh`. The source code for the package will be downloaded and the package will be built. The next time you
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start Serenity, `curl` will be available.
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## More information
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At this point you should have a fully functioning VM for SerenityOS. The [advanced build instructions guide](AdvancedBuildInstructions.md)
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has more information for some less commonly used features of the build system.
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