xlibc
libc module for both Darwin and GNU based system. The main different between Darwin/Glibc to xlibc is that xlibc also included headers that Darwin/Glibc not included, for example ifaddrs.h. xlibc also included inotify and epoll for linux.
Contribution
If you found some headers missing in xlibc, Darwin/Glibc, please submmit a PR to _xlibc.