[dredmorbius]

If you're the author of the pages, you can set the licensing terms as you wish.

Generally, an MIT/BSD style license tends to be compatible with most other licenses. If you're the sole author, licensing the manpages under the same terms as the specific upstream works would work.

You might specify your own terms (say: a CC license), with a proviso "or, as an alternative, under the licensing terms of the original project for which this manual page applies".

IANAL.