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People seem to easily miss the "Setting up build tools" section, so I have moved that step above the filesystem information and linked directly to BuildInstructions.md to hopefully make it harder to skip. Also, added mention of `\\wsl$` since that regularly comes up in Discord.
53 lines
2.6 KiB
Markdown
53 lines
2.6 KiB
Markdown
# Setting up a development environment on Windows
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SerenityOS can be built and run under WSL Version 2.
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WSL Version 1 is not supported since Version 1 does not support ext2, which is needed for the setup.
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WSL Version 2 requires Windows 10 version 2004 or higher, with OS Build 19041 or greater. Here is a guide on how to
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[get WSL2](https://docs.microsoft.com/en-us/windows/wsl/install-win10).
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Once installed, you will need to make sure the distribution you want to use (and the new default) is using Version 2:
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- `wsl -l -v` lists distros and versions,<br/>
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- `wsl --set-version <distro> <version>` is used to convert a distro to another version, and<br/>
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- `wsl --set-default-version 2` will set the default version for all new distros (if desired.)<br/>
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Next, go to [BuildInstructions.md](https://github.com/SerenityOS/serenity/blob/master/Documentation/BuildInstructions.md#prerequisites)
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and follow the instructions for your chosen Linux environment, to get the needed build tools.
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## Note on filesystems
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WSL2 filesystem performance for IO heavy tasks (such as compiling a large C++ project) on the host Windows filesystem is
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pretty bad. See [this issue on the WSL GitHub project](https://github.com/microsoft/WSL/issues/4197#issuecomment-604592340)
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for details.
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The recommendation from the Microsoft team on that issue is:
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> If it's at all possible, store your projects in the Linux file system in WSL2.
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In practice, this means cloning and building the project to somewhere such as `/home/username/serenity`. You can then
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access the linux filesystem at `\\wsl$`, so for example, the project would be at `\\wsl$\home\username\serenity`.
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## Setting up QEMU
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Grab the latest QEMU binaries from [here](https://www.qemu.org/download/#windows) and install them. At a minimum you
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will need to install the tools as well as the system emulators for i386 and x86_64.
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Run `Meta/serenity.sh run` to build and run SerenityOS as usual.
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### Hardware acceleration
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The steps above will run QEMU in software virtualization mode, which is very slow.
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QEMU supports hardware acceleration on Windows via the [Windows Hypervisor Platform](https://docs.microsoft.com/en-us/virtualization/api/)
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(WHPX).
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Enable the Windows Hypervisor Platform feature, either using "Turn Windows features on or off", or by running the
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following command in an elevated PowerShell session: \
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`dism /Online /Enable-Feature /All /FeatureName:HypervisorPlatform`
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You may have to reboot after enabling the WHPX feature.
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Afterwards you can start the VM with `Meta/serenity.sh run` as usual.
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