The FSF does appear to prefer copyright assignment over DCOs[1], but as of last year GCC contributions only require a DCO[2]. [1] https://www.fsf.org/blogs/lic

The FSF does appear to prefer copyright assignment over DCOs[1], but as of last year GCC contributions only require a DCO[2]. [1] https://www.fsf.org/blogs/licensing/FSF-copyright-handling https://www.fsf.org/blogs/licensing/FSF-copyright-handling [2] https://lwn.net/Articles/857791/ https://lwn.net/Articles/857791/