@itemize
@item
This function is missing on some platforms:
-AIX 5.1, HP-UX 11, IRIX 6.5, Solaris 10.
+Minix 3.1.8, AIX 5.1, HP-UX 11, IRIX 6.5, Solaris 11 2011-11.
@item
This function requires linking with @code{-lutil} on some platforms:
glibc 2.3.6, FreeBSD 6.0, NetBSD 5.0, OpenBSD 3.8.
@itemize
@item
This function is missing on some platforms:
-mingw.
+mingw, MSVC 9.
@item
This function is declared in @code{<utmp.h>} on glibc, Cygwin,
in @code{<util.h>} on MacOS X 10.5, NetBSD 5.0, OpenBSD 3.8,