[Bug-tar] FreeBSD 8: openat() yes, fdopendir() no

[Christian Weisgerber]

GNU tar 1.19 fails to build on FreeBSD 8-CURRENT (starting from
2008-03-31).  The problem is code in lib/getcwd.c and lib/savedir.c
that mistakenly assumes if openat() is available, so will be
fdopendir().  FreeBSD imported the Solaris-style *at() functions,
but it does not have fdopendir(), and I don't see how the existence
of the one should imply the existence of the other.

Apparently the problematic code is shared across GNU projects.  At
least fileutils is affected as well.

-- 
Christian "naddy" Weisgerber                          address@hidden