Re: svn commit: r1136114 - /subversion/trunk/configure.ac

On Wed, Jun 15, 2011 at 06:28:28PM +0100, Philip Martin wrote:
> Stefan Sperling <stsp_at_elego.de> writes:
> >> Is cmp as portable as diff? Is it always available with the same
> >> behaviour? autoconf generates calls to diff, so we know that using diff
> >> will work anywhere that autoconf works. As far as I can tell autoconf
> >> doesn't use cmp.
> >
> >>From the cmp man page:
> >
> > HISTORY
> > "A cmp command appeared in Version 1 AT&T UNIX."
> >
> > I would say that's ancient enough to be supported anywhere :)
>
> Do they all support -s?

Very likely. The -s option was present in Unix 7th Edition:
http://minnie.tuhs.org/cgi-bin/utree.pl?file=V7/usr/src/cmd/cmp.c
It was likely also in 4.4BSD or earlier. NetBSD had the option in 1995.
Received on 2011-06-15 19:55:20 CEST