Thanks for using Verilator! We welcome your contributions in whatever form.
This contributing document contains some suggestions that may make contributions flow more efficiently.
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Please Ensure the bug was not already reported by searching Verilator Issues.
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If you’re unable to find an open issue addressing the problem, open a new Verilator issue.
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Be sure to include a code sample or an executable test case demonstrating the bug and expected behavior that is not occurring.
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The ideal example works against other simulators, and is in the test_regress/t test format, as described in docs/internals.
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Please Open a new issue.
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You may attach a patch to the issue, or (preferred) may request a GitHub pull request.
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Verilator uses GitHub Actions to provide continuous integration. You may want to enable Actions on your GitHub branch to ensure your changes keep the tests passing. See docs/internals.
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Your source-code contributions must be certified as open source, under the Developer Certificate of Origin. On your first contribution, you must either:
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Have your patch include the addition of your name to docs/CONTRIBUTORS (preferred).
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Use "git -s" as part of your commit. This adds a "signed-of-by" attribute which will certify your contribution as described in the Signed-of-By convention.
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Email, or post in an issue a statement that you certify your contributions.
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In any of these cases your name will be added to docs/CONTRIBUTORS and you are agreeing all future contributions are also certified.
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We occasionally accept contributions where people do not want their name published. Please email us; you must still privately certify your contribution.
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Your test contributions are generally considered released into the Creative Commons Public Domain (CC0), unless you request otherwise or put a GNU/Artistic license on your file.
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Most important is we get your patch. If you’d like to clean up indentation and related issues ahead of our feedback, that is appreciated; please see the coding conventions in docs/internals.
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Please see FAQ section and rest of the Verilator manual, or Verilator manual (PDF).
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Ask any question in the Verilator forum.
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Our contributors and participants pledge to make participation in our project and our community a positive experience for everyone. We follow the Contributor Covenant version 1.4.
Thanks!