Getting Started/Sources/Amarok Git Tutorial

    From KDE TechBase
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    Amarok is now developed in a Git repository instead of SVN. This was done to help get into place all the needed infrastructure to convert all of KDE, including documentation.

    Crucial Step 0

    For Windows you will need to follow some more steps. Found here.

    git config --global user.name "Your Legal First and Last Name Here"
    git config --global user.email [email protected]
    

    Run these commands before you even ponder ever in your life pushing to a Git repo.

    Getting started with git

    Depending on whether you simply want to test and follow Amarok development, write the occasional patch, or are an Amarok developer, the steps to use the repo are different.

    Follow and test the latest development code

    git clone git://git.kde.org/amarok/amarok
    

    This creates an 'amarok' directory. cd into that and use it like normal. And when you want to update:

    git pull
    

    will download the new changes.

    Patch Contributions

    This is still a work in progress, as we work on getting ReviewBoard set up. In the meantime, hold on to any patches, or email them to [email protected] -- just be sure to follow the thread to ensure that it doesn't get lost  :-)

    If you have a KDE development SSH account, you can create your own server-side clone of the Amarok repository and store your changes there. Others could then pull from your repository or add your repository as a remote.

    To do this, run the following command, substituting your KDE username and a reponame of your choice, *without* a trailing ".git":

    ssh [email protected] clone amarok/amarok amarok/users/[username]/[reponame]

    After that, you will have a fully functioning repository of your own at git://git.kde.org/amarok/users/[username]/[reponame] or [email protected]:amarok/users/[username]/[reponame] for read-only and push URLs, respectively.

    You can delete this repository at any time by running the "rmrepo" command:

    ssh [email protected] rmrepo amarok/users/[username]/[reponame]

    • Create a branch for each new feature of bug fix you want to work on:
    git branch my_feature_branch
    
    • Switch to the new branch:
    git checkout my_feature_branch
    
    • Work, fix that bug or add the feature...
    ...work on this checkout - follow the normal development workflow...
    
    • Commit it to your local checkout:
    git commit -a
    
    • Publish it on gitorious:
    git push origin my_feature_branch
    
    • You can follow the main development branch easily by adding it as remote branch:
    git remote add upstream git://git.kde.org.org/amarok/amarok
    
    • Update by pulling from the remote:
    git pull --rebase upstream master
    
    • Remember to use one branch per feature/bug fix!

    Amarok Developers

    account setup

    If you don't already have a SSH account to the KDE SVN, please file a sysadmin bug on http://bugs.kde.org and provide your logon and your SSH pub key.

    Setup Amarok Clone

    The easiest thing to do is just use that:

    git clone [email protected]:amarok/amarok.git
    

    This will create a directory 'amarok'. cd into that and start developing!

    If you already have an existing checkout form Gitorious times, simply edit the .git/config file and change "gitorious.org" to "git.kde.org" for the main repository (not any personal clones you may have in remotes).

    Basic Development

    90% of the time this is all that is needed:

    git pull --rebase
    #hack, compile, build. It works!
    git status #to check if you want to commit all the modified files
    git commit -a
    git log
    git push
    

    git pull --rebase downloads the latest changes. The --rebase option takes any unpushed local commits and applies them to the latest code, moving it to the top of the history. It is the equivalent of git pull; git rebase origin/master. See the "1. Rebase" section of Shipping Quality Code for a good explanation of what rebase does.

    If you have uncommited changes you can not rebase. Instead you can git stash, do the rebase, and then git stash apply.

    git status will tell you what files are modified. If you created a new file, use git add on it to "track" it. If there are some junk files, you can add a regexp to .gitignore in the root.

    git commit -a will commit all unmodified files. You can use git add and then simply git commit instead if you wish to commit only certain files.

    Use git log to review the local unpushed commits. Possibly also useful is git diff origin/master, which will give you a diff between the current checkout and what is in the central repo.

    git push pushes all the local commits to the central repo.

    Follow remote feature branch

    With git, feature branches are cheap and easy. Here's how to follow a feature branch someone else has already setup.

    Remember that you can't push to git:// URL's when picking what URL to use.

    git remote add jeff git://gitorious.org/~jefferai/amarok/jefferai-work.git
    git remote update
    git branch -a
    git branch jeff-pud pud-action/pudaction-removal
    git checkout jeff-pud
    #and later you want to switch back to the mainline
    git checkout master
    

    git remote add adds a new remote named 'jeff' with the given URL. Think of remotes like bookmarks: you could always just explicitly pull from a URL instead.

    git remote update downloads all the remotes you have without merging them, including the remote you just defined. This is a handy command if you're tracking multiple remotes.

    git branch -a this lists all the branches you have, including the remote branches. Find the new branch you want to look at.

    git branch this command creates a local branch called 'jeff-pud' that tracks the remote branch 'pud-action/pudaction-removal'. You figured out the name of the latter in the previous command.

    git checkout is how you switch between branches.

    Recommended reading

    Todo for this doc

    • creating feature branches
    • history manipulation. rebase -i, commit --append, and what to do when things go wrong. Probably its own page.
    • merging with Development/Tutorials/Git