43 lines
2.2 KiB
Markdown
43 lines
2.2 KiB
Markdown
Contributing {#contributing}
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============
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Want to contribute? Great! First, read this page (including the small print at
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the end).
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# Before you contribute
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Before we can use your code, you must sign the
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[Google Individual Contributor License Agreement](https://developers.google.com/open-source/cla/individual?csw=1)
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(CLA), which you can do online. The CLA is necessary mainly because you own the
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copyright to your changes, even after your contribution becomes part of our
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codebase, so we need your permission to use and distribute your code. We also
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need to be sure of various other things—for instance that you'll tell us if you
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know that your code infringes on other people's patents. You don't have to sign
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the CLA until after you've submitted your code for review and a member has
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approved it, but you must do it before we can put your code into our codebase.
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Before you start working on a larger contribution, you should get in touch with
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us first through the issue tracker with your idea so that we can help out and
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possibly guide you. Coordinating up front makes it much easier to avoid
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frustration later on.
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# Code reviews
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All submissions, including submissions by project members, require review. We
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use Github pull requests for this purpose.
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Some tips for good pull requests:
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* Use our code
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[style guide](https://google.github.io/styleguide/cppguide.html).
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When in doubt, try to stay true to the existing code of the project.
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* Write a descriptive commit message. What problem are you solving and what
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are the consequences? Where and what did you test? Some good tips:
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[here](http://robots.thoughtbot.com/5-useful-tips-for-a-better-commit-message)
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and [here](https://www.kernel.org/doc/Documentation/SubmittingPatches).
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* If your PR consists of multiple commits which are successive improvements /
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fixes to your first commit, consider squashing them into a single commit
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(`git rebase -i`) such that your PR is a single commit on top of the current
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HEAD. This make reviewing the code so much easier, and our history more
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readable.
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# The small print
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Contributions made by corporations are covered by a different agreement than
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the one above, the Software Grant and Corporate Contributor License Agreement.
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