New comment by oreo639 on void-packages repository

https://github.com/void-linux/void-packages/issues/48391#issuecomment-1912863333

Comment:
musl does define `RLIMIT_RTTIME` https://github.com/bminor/musl/commit/2507e7f5312e79620f6337935d0a6c9045ccba09 (we have that patch).

It is possible there is a missing include.
We have packages that work around not having `RLIMIT_RTTIME` by adding `-DRLIMIT_RTTIME=15` to the CFLAGS.