Copyright Assignment

VOLK is a sub-project of GNU Radio. Thus, in the past the copyright was owned by the Free Software Foundation. Since then, we switched to the Developer's Certificate of Origin (DCO) process. Thus, make sure you have read the DCO and sign every commit with git commit -s to acknowledge these terms.

Working on VOLK

Git workflow

The official git code is tracked on the repository main branch. Every once in a while we tag a release off of the main branch.

Checkout the branch appropriate for your change and start a new branch with a short name describing your feature. The branch name should be meaningful in the git log if it appears in a merge commit.

Make sure every commit is signed with -s. With this step you confirm the DCO.

The first line of every commit message should be less than 70 characters with the following format

component name: brief summary that is less than 70 characters

If more detail is needed, skip a line and add more detail. Keep lines to less than 80 characters.

Submitting Your Changes

The preferred method of submitting changes is through a Github Pull Request to For smaller changes you can upload a patchfile generated by git to the issue tracker.

If you have substantial changes and prefer to not use Github then send a note in chat or the mailing list describing your changes and a link to a publically available git repository.

All pull requests and patch series will be tested by running ctest on multiple platforms (Linux, MacOS, Windows) and architectures (x86_64 (64-bit), armv7, aarch64).