These are imported forks of external library projects. Their source redistribution licenses are for the most part as permissive or more permissive than MoarVM's itself. We have imported them here because we needed to make extensive modifications to their capabilities or exposed API, and so couldn't use system packages, or available system packages are too far out of date.

Note: you may find that libatomic_ops has some GPL-licensed files in the repo. These are NOT included in any built binaries; they are merely tools for configuring, building, and testing, and should be disregarded when considering the redistributability of MoarVM in source form or binary form.