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

peters_at_apache.org writes:

> Author: peters
> Date: Wed Jun 15 16:43:24 2011
> New Revision: 1136114
>
> URL: http://svn.apache.org/viewvc?rev=1136114&view=rev
> Log:
> * configure.ac: Followup r1134219: Use 'cmp -s' instead of 'diff' to
> detect changes to svn_private_config.h. Take advantage of the fact
> that cmp -s produces no output even if a file does not exist.
> Use a temp variable to shorten the lines further.

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.

-- 
Philip