= Getting the code =
== Windows ==
=== Git ===
 * Download and install [https://tortoisegit.org/ TortoiseGit]. (Make sure you reboot when it asks you to.)
=== Subversion (SVN) ===
 * Download and install [https://tortoisesvn.net/ TortoiseSVN]. (Make sure you check the "command line client tools" option and reboot when it asks you to.)

== macOS ==
* Git is part of the `Xcode Command Line Tools` package, and can be installed via the GUI or the terminal.
{{{
#!sh
xcode-select --install
}}}

* SVN is no longer part of the `Xcode Command Line Tools` package, but can be installed, e.g. via [http://brew.sh Homebrew].
{{{
#!sh
brew install svn
}}}

== Linux ==
=== Git ===
`Git` is usually present on modern distributions of Linux however you might need to install it in some cases.  Depending on your Linux flavour your package manager might differ. For instance on **Ubuntu** it would be:

{{{
#!sh
sudo apt update
sudo apt install git
}}}
=== Subversion (SVN) ===
You might need to have to install subversion for it to work. Depending on your Linux flavour your package manager might differ. For instance on **Ubuntu** it would be:

{{{
#!sh
sudo apt update
sudo apt install subversion
}}}
== All platforms ==
You'll need approximatively **8GB** for a clean checkout, and a few more if you build and run the game. So try to have at least **20GB** free to be safe.

'''Note:''' 0 A.D. is primarily developed on `SVN`. However since we are using Arcanist and [wiki:Phabricator], unless you have commit access you should never need to use `SVN` if you don't want to. You can use `Git` instead using mirrors, those may be slightly less up-to-date but usually offers faster downloads. Those mirrors are updated daily.

'''Important:''' Make sure that the checkout directory doesn't contain special characters (spaces or non-ASCII characters)
=== Git ===
To use a `Git` mirror, use one of the following commands:

{{{
#!sh
git clone https://github.com/0ad/0ad.git
}}}
or

{{{
#!sh
git clone https://gitlab.com/0ad/0ad.git
}}}
As of February 2024, the Git repo consumes about 9 GB of disk space. Consider using `--depth=50` or something like that if you don't plan to compile previous versions.
=== Subversion (SVN) ===
To checkout the latest code from `SVN`, run this command:

{{{
#!sh
svn co https://svn.wildfiregames.com/public/ps/trunk/ 0ad
}}}
'''Note:''' This is the read-only public `SVN` URL. If you have commit access, you need to use this one instead:

{{{
#!sh
svn co https://svn.wildfiregames.com/svn/ps/trunk/ 0ad
}}}
'''Note:''' Sometimes `SVN` stops before it has downloaded all files. You should check that it outputs something like `at revision rXXXXX`. Otherwise run

{{{
#!sh
svn cleanup 0ad
svn up 0ad
}}}