Re: acl: FTBFS on GNU/Hurd

[Neal H. Walfield]

__USE_LARGEFILE64 and __USE_XOPEN_EXTENDED are *not* user macros.  You
want to use _FILE_OFFSET_BITS and _XOPEN_EXTENDED respectively.
However, these must be defined before any includes are done and (at
least the former) should be done across all files.  I suggest that
they be added to the CFLAGS (e.g. in the automake files).