https://bugs.winehq.org/show_bug.cgi?id=17195
--- Comment #176 from Luke Kenneth Casson Leighton lkcl@lkcl.net --- http://tech.slashdot.org/story/15/10/04/216221/openindiana-hipster-201510-ke...
so here is an example of a libre OS that is still available, and is still being maintained (despite the difficulty of doing so).
it is not "theoretical" that there are other OSes other than linux-based ones, it is *real* that there are other OSes other than linux-based ones.
i trust therefore that this patch - now staged - is portable across multiple POSIX compliant OSes.