Names are resolved with getaddrinfo(), thread-safe everywhere: what was
left of gethostbyname() (my_gethostbyname() over gethostbyname_r(), in
its glibc and Solaris forms, GETHOSTBYNAME_R, the mutex for the plain
one) served only the IPv4-only resolver already gone. Makefile.Solaris
(Sun's compiler, _SOLARIS) and Makefile.unix go: CMake builds for the
other systems; the documents say so, and their examples use
Makefile.FreeBSD.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>